├── .gitattributes ├── .gitignore ├── LICENSE ├── README.md ├── examples ├── libtrails-example-basic │ ├── pom.xml │ └── src │ │ └── main │ │ ├── java │ │ └── com │ │ │ └── devcexx │ │ │ └── libtrails │ │ │ └── examples │ │ │ └── basic │ │ │ └── BasicExample.java │ │ └── resources │ │ └── plugin.yml ├── libtrails-example-colorful │ ├── pom.xml │ └── src │ │ └── main │ │ ├── java │ │ └── com │ │ │ └── devcexx │ │ │ └── libtrails │ │ │ └── examples │ │ │ └── colorful │ │ │ └── ColorfulExample.java │ │ └── resources │ │ └── plugin.yml ├── libtrails-example-skin-gadget │ ├── pom.xml │ └── src │ │ └── main │ │ ├── java │ │ └── com │ │ │ └── devcexx │ │ │ └── libtrails │ │ │ └── examples │ │ │ └── skin │ │ │ ├── CachedSkin.java │ │ │ ├── DefaultSkinModel.java │ │ │ ├── PlayerState.java │ │ │ ├── Reflector.java │ │ │ ├── SkinDownloader.java │ │ │ ├── SkinExample.java │ │ │ └── SkinPixelProvider.java │ │ └── resources │ │ ├── alex.png │ │ ├── plugin.yml │ │ └── steve.png └── pom.xml ├── library ├── pom.xml └── src │ └── main │ └── java │ └── com │ └── devcexx │ └── libtrails │ ├── EntityTrail.java │ ├── LinearTransf.java │ ├── Particle.java │ ├── ParticleSupplier.java │ ├── SuppliedParticle.java │ ├── TrailUtil.java │ ├── Vector3.java │ └── suppliers │ ├── BitmapSupplier.java │ ├── CircumferenceSupplier.java │ ├── EpitrochoidSupplier.java │ ├── HelixSupplier.java │ ├── HypotrochoidSupplier.java │ ├── LinearSupplier.java │ ├── PolySupplier.java │ ├── ScatteringSupplier.java │ ├── SinusoidalSupplier.java │ ├── SpirographSupplier.java │ └── StarSupplier.java └── pom.xml /.gitattributes: -------------------------------------------------------------------------------- 1 | *.java text eol=lf encoding=utf-8 2 | *.xml text eol=lf encoding=utf-8 3 | *.yml text eol=lf encoding=utf-8 4 | LICENSE text eol=lf encoding=utf-8 5 | README.md text eol=lf encoding=utf-8 6 | *.png binary 7 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | .DS_Store 2 | .idea/ 3 | **/target/ 4 | server/ 5 | *.iml 6 | pom.xml.versionsBackup 7 | dependency-reduced-pom.xml -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. 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Limitation of Liability. 601 | 602 | IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING 603 | WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS 604 | THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY 605 | GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE 606 | USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF 607 | DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD 608 | PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), 609 | EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF 610 | SUCH DAMAGES. 611 | 612 | 17. Interpretation of Sections 15 and 16. 613 | 614 | If the disclaimer of warranty and limitation of liability provided 615 | above cannot be given local legal effect according to their terms, 616 | reviewing courts shall apply local law that most closely approximates 617 | an absolute waiver of all civil liability in connection with the 618 | Program, unless a warranty or assumption of liability accompanies a 619 | copy of the Program in return for a fee. 620 | 621 | END OF TERMS AND CONDITIONS 622 | 623 | How to Apply These Terms to Your New Programs 624 | 625 | If you develop a new program, and you want it to be of the greatest 626 | possible use to the public, the best way to achieve this is to make it 627 | free software which everyone can redistribute and change under these terms. 628 | 629 | To do so, attach the following notices to the program. It is safest 630 | to attach them to the start of each source file to most effectively 631 | state the exclusion of warranty; and each file should have at least 632 | the "copyright" line and a pointer to where the full notice is found. 633 | 634 | {one line to give the program's name and a brief idea of what it does.} 635 | Copyright (C) {year} {name of author} 636 | 637 | This program is free software: you can redistribute it and/or modify 638 | it under the terms of the GNU General Public License as published by 639 | the Free Software Foundation, either version 3 of the License, or 640 | (at your option) any later version. 641 | 642 | This program is distributed in the hope that it will be useful, 643 | but WITHOUT ANY WARRANTY; without even the implied warranty of 644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 645 | GNU General Public License for more details. 646 | 647 | You should have received a copy of the GNU General Public License 648 | along with this program. If not, see . 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | {project} Copyright (C) {year} {fullname} 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | . 675 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # Libtrails 2 | Little trails & particles library for Spigot. 3 | 4 | This library contains utilities oriented to simplify the creation of trails and effects with particles in Spigot. This includes mathematical functions to work with vectors in the three-dimensional space and some kawaii predefined trails such as helix generators, sinusoidal waves, some shapes generators and even a image renderer with particles. 5 | 6 | It's important to note that this library is optimized for using it with the Java 8 Functional API (lambda expressions, streams, you know), so Java 8 is required to use this library. 7 | 8 | ## Usage 9 | 10 | First things first, you have to be clear about that **THIS IS NOT A SPIGOT PLUGIN**. This is just a utility library and, therefore, if you want to use it, you should shade it into your plugin final jar. 11 | 12 | As I don't provide any Maven repository for this library, if you are using GIT as VCS, maybe could be a good idea to use this project as a submodule, to make easier the compilation process, and to be sure that you're code is always up-to-date with the project. 13 | 14 | This Maven project is divided in two main reactors: the library itself and an example reactor, that contains example plugins of the usage of this library. This examples are fully functional plugins that can be directly loaded by spigot to be tested, and can help you to understood (unless until I write a better README file). If you want to compile just the library, you have to activate the profile `build-library` of the Maven project as follows: 15 | 16 | ```mvn clean install -Pbuild-library``` 17 | 18 | In the other hand, if you want to compile only the examples, you have to active the profile `build-examples` of the project: 19 | 20 | ```mvn clean install -Pbuild-examples``` 21 | 22 | ## Compatibility 23 | 24 | This library is supposed to work in Spigot 1.8 - 1.11 inclusive, but it has been only tested in Spigot 1.8. Also, it uses some deprecated API in the Spigot 1.11 API Specification to allow the library to be compatible with previous versions of it. 25 | 26 | ## License 27 | 28 | This software is under the GNU GPL v3 license. This mean, in a nutshell, that you can freely use and distribute open source software that uses this library, but you cannot use it for privative projects. For more details about this license, please refer to the file LICENSE present in this repository. 29 | -------------------------------------------------------------------------------- /examples/libtrails-example-basic/pom.xml: -------------------------------------------------------------------------------- 1 | 2 | 5 | 6 | 4.0.0 7 | 8 | 9 | com.devcexx 10 | libtrails-examples 11 | 1.0 12 | ../pom.xml 13 | 14 | 15 | libtrails-example-basic 16 | 1.0 17 | 18 | 19 | 20 | com.devcexx 21 | libtrails 22 | 1.0.3 23 | 24 | 25 | 26 | 27 | 28 | 29 | src/main/resources 30 | true 31 | 32 | 33 | 34 | 35 | 36 | org.apache.maven.plugins 37 | maven-shade-plugin 38 | 2.4.3 39 | 40 | 41 | 42 | -------------------------------------------------------------------------------- /examples/libtrails-example-basic/src/main/java/com/devcexx/libtrails/examples/basic/BasicExample.java: -------------------------------------------------------------------------------- 1 | /* 2 | * This file is part of libtrails. 3 | * libtrails is free software: you can redistribute it and/or modify 4 | * it under the terms of the GNU General Public License as published by 5 | * the Free Software Foundation, either version 3 of the License, or 6 | * (at your option) any later version. 7 | * 8 | * libtrails is distributed in the hope that it will be useful, 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 | * GNU General Public License for more details. 12 | * 13 | * You should have received a copy of the GNU General Public License 14 | * along with libtrails. If not, see . 15 | */ 16 | 17 | package com.devcexx.libtrails.examples.basic; 18 | 19 | import com.devcexx.libtrails.EntityTrail; 20 | import com.devcexx.libtrails.Particle; 21 | import com.devcexx.libtrails.Vector3; 22 | import com.devcexx.libtrails.suppliers.ScatteringSupplier; 23 | import org.bukkit.Bukkit; 24 | import org.bukkit.Effect; 25 | import org.bukkit.entity.Arrow; 26 | import org.bukkit.entity.Entity; 27 | import org.bukkit.entity.Player; 28 | import org.bukkit.event.EventHandler; 29 | import org.bukkit.event.Listener; 30 | import org.bukkit.event.entity.EntityShootBowEvent; 31 | import org.bukkit.event.entity.ProjectileHitEvent; 32 | import org.bukkit.plugin.java.JavaPlugin; 33 | 34 | import java.util.HashMap; 35 | import java.util.Map; 36 | import java.util.Random; 37 | 38 | public class BasicExample extends JavaPlugin implements Listener { 39 | private final Map trails = new HashMap<>(); 40 | private final Particle[] particles = new Particle[] { 41 | Particle.builder() 42 | .effect(Effect.FIREWORKS_SPARK) 43 | .offsetX(0.0f) 44 | .offsetZ(0.0f) 45 | .count(3) 46 | .radius(120) 47 | .build(), 48 | 49 | Particle.builder() 50 | .effect(Effect.FLAME) 51 | .offsetX(0.0f) 52 | .offsetZ(0.0f) 53 | .count(3) 54 | .radius(120) 55 | .build(), 56 | 57 | Particle.builder() 58 | .effect(Effect.SMOKE) 59 | .offsetX(0.0f) 60 | .offsetZ(0.0f) 61 | .count(3) 62 | .radius(120) 63 | .build(), 64 | }; 65 | @Override 66 | public void onEnable() { 67 | getServer().getPluginManager().registerEvents(this, this); 68 | } 69 | 70 | @EventHandler 71 | public void onBowShot(EntityShootBowEvent e) { 72 | if (e.getEntity() instanceof Player && 73 | e.getProjectile() instanceof Arrow) { 74 | Bukkit.getScheduler().runTaskLater(this, () -> { 75 | if (!e.getProjectile().isDead()) { 76 | EntityTrail t = new EntityTrail(this, e.getProjectile(), 77 | new ScatteringSupplier(particles, 78 | new Vector3(2.0f, 1.0f, 2.0f), 79 | Vector3.ORIGIN, 5, 20, 1) 80 | , 1); 81 | 82 | trails.put(e.getProjectile(), t); 83 | t.begin(); 84 | } 85 | }, 5L); 86 | } 87 | } 88 | 89 | @EventHandler 90 | public void onProjectileHit(ProjectileHitEvent e) { 91 | if (e.getEntity() instanceof Arrow) { 92 | EntityTrail t = trails.remove(e.getEntity()); 93 | if (t != null) 94 | t.stop(); 95 | } 96 | } 97 | } 98 | -------------------------------------------------------------------------------- /examples/libtrails-example-basic/src/main/resources/plugin.yml: -------------------------------------------------------------------------------- 1 | name: ${project.artifactId} 2 | version: ${project.version} 3 | author: devcexx 4 | main: com.devcexx.libtrails.examples.basic.BasicExample -------------------------------------------------------------------------------- /examples/libtrails-example-colorful/pom.xml: -------------------------------------------------------------------------------- 1 | 2 | 5 | 6 | libtrails-examples 7 | com.devcexx 8 | 1.0 9 | 10 | 4.0.0 11 | 12 | libtrails-example-colorful 13 | 1.0 14 | 15 | 16 | 17 | com.devcexx 18 | libtrails 19 | 1.0.3 20 | 21 | 22 | 23 | 24 | 25 | 26 | src/main/resources 27 | true 28 | 29 | 30 | 31 | 32 | 33 | org.apache.maven.plugins 34 | maven-shade-plugin 35 | 2.4.3 36 | 37 | 38 | 39 | 40 | 41 | -------------------------------------------------------------------------------- /examples/libtrails-example-colorful/src/main/java/com/devcexx/libtrails/examples/colorful/ColorfulExample.java: -------------------------------------------------------------------------------- 1 | /* 2 | * This file is part of libtrails. 3 | * libtrails is free software: you can redistribute it and/or modify 4 | * it under the terms of the GNU General Public License as published by 5 | * the Free Software Foundation, either version 3 of the License, or 6 | * (at your option) any later version. 7 | * 8 | * libtrails is distributed in the hope that it will be useful, 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 | * GNU General Public License for more details. 12 | * 13 | * You should have received a copy of the GNU General Public License 14 | * along with libtrails. If not, see . 15 | */ 16 | 17 | package com.devcexx.libtrails.examples.colorful; 18 | 19 | import com.devcexx.libtrails.EntityTrail; 20 | import com.devcexx.libtrails.Particle; 21 | import com.devcexx.libtrails.suppliers.CircumferenceSupplier; 22 | import org.bukkit.Bukkit; 23 | import org.bukkit.Effect; 24 | import org.bukkit.entity.Arrow; 25 | import org.bukkit.entity.Entity; 26 | import org.bukkit.entity.Player; 27 | import org.bukkit.event.EventHandler; 28 | import org.bukkit.event.Listener; 29 | import org.bukkit.event.entity.EntityShootBowEvent; 30 | import org.bukkit.event.entity.ProjectileHitEvent; 31 | import org.bukkit.plugin.java.JavaPlugin; 32 | 33 | import java.util.HashMap; 34 | import java.util.Map; 35 | 36 | public class ColorfulExample extends JavaPlugin implements Listener { 37 | 38 | private final Map trails = new HashMap<>(); 39 | private final Particle particle = Particle.builder() 40 | .effect(Effect.COLOURED_DUST) 41 | .count(0) 42 | .speed(1.0f) 43 | .offsetX(this::tickToColor) 44 | 45 | /* Both Green and Blue components follows the same Piecewise as the 46 | * Red channel, with shifted to the right. 47 | */ 48 | .offsetY(t -> tickToColor(t + 256)) 49 | .offsetZ(t -> tickToColor(t + 512)) 50 | .radius(120) 51 | .build(); 52 | 53 | 54 | private float tickToColor(int tick) { 55 | tick = (tick * 20) % 1536; 56 | if (tick < 256) return 1.0f; 57 | if (tick < 512) return Math.max(0.001f, (255 - (tick % 256)) / 256.0f); 58 | if (tick < 1024) return 0.0f; 59 | if (tick < 1280) return Math.max(0.001f, (tick % 256) / 256.0f); 60 | return 1.0f; 61 | } 62 | 63 | @Override 64 | public void onEnable() { 65 | getServer().getPluginManager().registerEvents(this, this); 66 | } 67 | 68 | 69 | @EventHandler 70 | public void onBowShot(EntityShootBowEvent e) { 71 | if (e.getEntity() instanceof Player && 72 | e.getProjectile() instanceof Arrow) { 73 | Bukkit.getScheduler().runTaskLater(this, () -> { 74 | if (!e.getProjectile().isDead()) { 75 | EntityTrail t = new EntityTrail(this, e.getProjectile(), 76 | new CircumferenceSupplier(particle, 1.2f, 0.9f, 0.0f, 1) 77 | .rotateY(tick -> tick * (2.0f * (float) Math.PI / 20)) 78 | , 1); 79 | trails.put(e.getProjectile(), t); 80 | t.begin(); 81 | } 82 | }, 5L); 83 | } 84 | } 85 | 86 | @EventHandler 87 | public void onProjectileHit(ProjectileHitEvent e) { 88 | if (e.getEntity() instanceof Arrow) { 89 | EntityTrail t = trails.remove(e.getEntity()); 90 | if (t != null) 91 | t.stop(); 92 | } 93 | } 94 | 95 | } 96 | -------------------------------------------------------------------------------- /examples/libtrails-example-colorful/src/main/resources/plugin.yml: -------------------------------------------------------------------------------- 1 | name: ${project.artifactId} 2 | version: ${project.version} 3 | author: devcexx 4 | main: com.devcexx.libtrails.examples.colorful.ColorfulExample -------------------------------------------------------------------------------- /examples/libtrails-example-skin-gadget/pom.xml: -------------------------------------------------------------------------------- 1 | 2 | 5 | 6 | libtrails-examples 7 | com.devcexx 8 | 1.0 9 | 10 | 4.0.0 11 | 12 | libtrails-example-skin-gadget 13 | 1.0 14 | 15 | 16 | 17 | mojang-repo 18 | https://libraries.minecraft.net 19 | 20 | 21 | 22 | 23 | 24 | com.devcexx 25 | libtrails 26 | 1.0.3 27 | 28 | 29 | 30 | com.mojang 31 | authlib 32 | 1.5.21 33 | 34 | 35 | 36 | 37 | 38 | 39 | src/main/resources 40 | true 41 | 42 | 43 | 44 | 45 | 46 | org.apache.maven.plugins 47 | maven-shade-plugin 48 | 2.4.3 49 | 50 | 51 | 52 | 53 | 54 | -------------------------------------------------------------------------------- /examples/libtrails-example-skin-gadget/src/main/java/com/devcexx/libtrails/examples/skin/CachedSkin.java: -------------------------------------------------------------------------------- 1 | /* 2 | * This file is part of libtrails. 3 | * libtrails is free software: you can redistribute it and/or modify 4 | * it under the terms of the GNU General Public License as published by 5 | * the Free Software Foundation, either version 3 of the License, or 6 | * (at your option) any later version. 7 | * 8 | * libtrails is distributed in the hope that it will be useful, 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 | * GNU General Public License for more details. 12 | * 13 | * You should have received a copy of the GNU General Public License 14 | * along with libtrails. If not, see . 15 | */ 16 | 17 | package com.devcexx.libtrails.examples.skin; 18 | 19 | import com.devcexx.libtrails.suppliers.BitmapSupplier; 20 | 21 | import java.util.UUID; 22 | 23 | public class CachedSkin { 24 | public long timestamp; 25 | public final BitmapSupplier supplier; 26 | public final UUID owner; 27 | public final String skinUrl; 28 | 29 | 30 | public CachedSkin(String skinUrl, UUID owner, BitmapSupplier s) { 31 | this.owner = owner; 32 | this.supplier = s; 33 | this.skinUrl = skinUrl; 34 | this.timestamp = System.currentTimeMillis(); 35 | } 36 | } 37 | -------------------------------------------------------------------------------- /examples/libtrails-example-skin-gadget/src/main/java/com/devcexx/libtrails/examples/skin/DefaultSkinModel.java: -------------------------------------------------------------------------------- 1 | /* 2 | * This file is part of libtrails. 3 | * libtrails is free software: you can redistribute it and/or modify 4 | * it under the terms of the GNU General Public License as published by 5 | * the Free Software Foundation, either version 3 of the License, or 6 | * (at your option) any later version. 7 | * 8 | * libtrails is distributed in the hope that it will be useful, 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 | * GNU General Public License for more details. 12 | * 13 | * You should have received a copy of the GNU General Public License 14 | * along with libtrails. If not, see . 15 | */ 16 | 17 | package com.devcexx.libtrails.examples.skin; 18 | 19 | public enum DefaultSkinModel { 20 | STEVE, 21 | ALEX 22 | } 23 | -------------------------------------------------------------------------------- /examples/libtrails-example-skin-gadget/src/main/java/com/devcexx/libtrails/examples/skin/PlayerState.java: -------------------------------------------------------------------------------- 1 | /* 2 | * This file is part of libtrails. 3 | * libtrails is free software: you can redistribute it and/or modify 4 | * it under the terms of the GNU General Public License as published by 5 | * the Free Software Foundation, either version 3 of the License, or 6 | * (at your option) any later version. 7 | * 8 | * libtrails is distributed in the hope that it will be useful, 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 | * GNU General Public License for more details. 12 | * 13 | * You should have received a copy of the GNU General Public License 14 | * along with libtrails. If not, see . 15 | */ 16 | 17 | package com.devcexx.libtrails.examples.skin; 18 | 19 | import org.bukkit.entity.Player; 20 | 21 | import java.util.UUID; 22 | 23 | class PlayerState { 24 | public final Player player; 25 | public final UUID id; 26 | public final DefaultSkinModel defSkinModel; 27 | public CachedSkin currentSkin; 28 | public long lastMovementTime; 29 | 30 | 31 | PlayerState(Player p) { 32 | this.player = p; 33 | this.id = p.getUniqueId(); 34 | this.defSkinModel = (id.hashCode() & 1) == 1 ? 35 | DefaultSkinModel.ALEX : 36 | DefaultSkinModel.STEVE; 37 | } 38 | } 39 | -------------------------------------------------------------------------------- /examples/libtrails-example-skin-gadget/src/main/java/com/devcexx/libtrails/examples/skin/Reflector.java: -------------------------------------------------------------------------------- 1 | /* 2 | * This file is part of libtrails. 3 | * libtrails is free software: you can redistribute it and/or modify 4 | * it under the terms of the GNU General Public License as published by 5 | * the Free Software Foundation, either version 3 of the License, or 6 | * (at your option) any later version. 7 | * 8 | * libtrails is distributed in the hope that it will be useful, 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 | * GNU General Public License for more details. 12 | * 13 | * You should have received a copy of the GNU General Public License 14 | * along with libtrails. If not, see . 15 | */ 16 | 17 | package com.devcexx.libtrails.examples.skin; 18 | 19 | import java.lang.reflect.Method; 20 | 21 | public class Reflector { 22 | public static Object invoke(Class from, String method, Object instance, 23 | Class[] types, Object[] params){ 24 | try { 25 | Method mtd = from.getDeclaredMethod(method, types); 26 | mtd.setAccessible(true); 27 | return mtd.invoke(instance, params == null ? 28 | new Object[0] : params); 29 | } catch (Exception ex){ 30 | throw new RuntimeException("Reflection error!", ex); 31 | } 32 | } 33 | } 34 | -------------------------------------------------------------------------------- /examples/libtrails-example-skin-gadget/src/main/java/com/devcexx/libtrails/examples/skin/SkinDownloader.java: -------------------------------------------------------------------------------- 1 | /* 2 | * This file is part of libtrails. 3 | * libtrails is free software: you can redistribute it and/or modify 4 | * it under the terms of the GNU General Public License as published by 5 | * the Free Software Foundation, either version 3 of the License, or 6 | * (at your option) any later version. 7 | * 8 | * libtrails is distributed in the hope that it will be useful, 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 | * GNU General Public License for more details. 12 | * 13 | * You should have received a copy of the GNU General Public License 14 | * along with libtrails. If not, see . 15 | */ 16 | 17 | package com.devcexx.libtrails.examples.skin; 18 | 19 | import com.google.common.collect.Iterators; 20 | import com.mojang.authlib.GameProfile; 21 | import com.mojang.authlib.properties.Property; 22 | import org.bukkit.entity.Player; 23 | import org.bukkit.plugin.Plugin; 24 | import org.json.simple.JSONObject; 25 | import org.json.simple.parser.JSONParser; 26 | import org.json.simple.parser.ParseException; 27 | 28 | import javax.imageio.ImageIO; 29 | import java.awt.image.BufferedImage; 30 | import java.io.IOException; 31 | import java.net.URL; 32 | import java.util.Base64; 33 | import java.util.Collection; 34 | import java.util.concurrent.Executor; 35 | import java.util.concurrent.Executors; 36 | import java.util.logging.Logger; 37 | 38 | public class SkinDownloader { 39 | 40 | private final Logger logger; 41 | private final Executor pool = Executors 42 | .newCachedThreadPool(r -> new Thread(r, "Skin Downloader")); 43 | 44 | public SkinDownloader(Plugin pl) { 45 | this.logger = pl.getLogger(); 46 | } 47 | 48 | public void beginDownloadSkin(String url, Callback 49 | callback) { 50 | pool.execute(() -> { 51 | try { 52 | BufferedImage img = downloadSkin(url); 53 | if (callback != null) { 54 | callback.done(img); 55 | } 56 | } catch (Exception ex) { 57 | logger.severe("Failed to download skin from url " + url); 58 | ex.printStackTrace(); 59 | } 60 | }); 61 | } 62 | 63 | public BufferedImage downloadSkin(String url) 64 | throws IOException{ 65 | return ImageIO.read(new URL(url)); 66 | } 67 | 68 | public String getSkinUrl(Player p) throws ParseException { 69 | return getSkinUrl((GameProfile) Reflector 70 | .invoke(p.getClass(), "getProfile", p, null, null)); 71 | } 72 | 73 | public String getSkinUrl(GameProfile prof) throws ParseException { 74 | Collection ps = prof.getProperties().get("textures"); 75 | 76 | if (ps == null || ps.isEmpty()) { 77 | return null; 78 | } else { 79 | Property p = Iterators.getLast(ps.iterator()); 80 | 81 | JSONObject obj = (JSONObject) new JSONParser().parse( 82 | new String(Base64.getDecoder().decode(p.getValue()))); 83 | 84 | obj = ((JSONObject) obj.get("textures")); 85 | obj = ((JSONObject) obj.get("SKIN")); 86 | return (String) obj.get("url"); 87 | } 88 | } 89 | 90 | public interface Callback { 91 | void done(T o); 92 | } 93 | } 94 | -------------------------------------------------------------------------------- /examples/libtrails-example-skin-gadget/src/main/java/com/devcexx/libtrails/examples/skin/SkinExample.java: -------------------------------------------------------------------------------- 1 | /* 2 | * This file is part of libtrails. 3 | * libtrails is free software: you can redistribute it and/or modify 4 | * it under the terms of the GNU General Public License as published by 5 | * the Free Software Foundation, either version 3 of the License, or 6 | * (at your option) any later version. 7 | * 8 | * libtrails is distributed in the hope that it will be useful, 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 | * GNU General Public License for more details. 12 | * 13 | * You should have received a copy of the GNU General Public License 14 | * along with libtrails. If not, see . 15 | */ 16 | 17 | package com.devcexx.libtrails.examples.skin; 18 | 19 | import com.devcexx.libtrails.LinearTransf; 20 | import com.devcexx.libtrails.Vector3; 21 | import com.devcexx.libtrails.suppliers.BitmapSupplier; 22 | import com.google.common.collect.Collections2; 23 | import com.google.common.collect.Maps; 24 | import org.bukkit.Bukkit; 25 | import org.bukkit.Effect; 26 | import org.bukkit.Location; 27 | import org.bukkit.entity.Player; 28 | import org.bukkit.event.EventHandler; 29 | import org.bukkit.event.Listener; 30 | import org.bukkit.event.player.PlayerJoinEvent; 31 | import org.bukkit.event.player.PlayerMoveEvent; 32 | import org.bukkit.event.player.PlayerQuitEvent; 33 | import org.bukkit.plugin.java.JavaPlugin; 34 | import org.json.simple.parser.ParseException; 35 | 36 | import javax.imageio.ImageIO; 37 | import java.awt.image.BufferedImage; 38 | import java.io.InputStream; 39 | import java.util.Collection; 40 | import java.util.Iterator; 41 | import java.util.Map; 42 | import java.util.UUID; 43 | 44 | public class SkinExample extends JavaPlugin implements Listener { 45 | 46 | private CachedSkin steveSkin; 47 | private CachedSkin alexSkin; 48 | 49 | private final SkinDownloader downloader = new SkinDownloader(this); 50 | private final Collection onlineIds = Collections2.transform( 51 | Bukkit.getOnlinePlayers(), f -> f == null ? null : f.getUniqueId()); 52 | 53 | private final Map cachedSkins = Maps.newHashMap(); 54 | private final Map playerState = Maps.newHashMap(); 55 | 56 | 57 | @Override 58 | public void onEnable() { 59 | getServer().getPluginManager().registerEvents(this, this); 60 | 61 | try { 62 | try (InputStream in = getResource("alex.png")) { 63 | alexSkin = new CachedSkin(null, null, 64 | buildSupplier(ImageIO.read(in))); 65 | } 66 | 67 | try (InputStream in = getResource("steve.png")) { 68 | steveSkin = new CachedSkin(null, null, 69 | buildSupplier(ImageIO.read(in))); 70 | } 71 | 72 | getServer().getScheduler().runTaskTimer(this, new SkinCacheCleanupper(), 73 | 100L, 100L); 74 | getServer().getScheduler().runTaskTimer(this, new PlayerTicker(), 75 | 5L, 5L); 76 | 77 | for (Player p : Bukkit.getOnlinePlayers()){ 78 | performJoin(p); 79 | } 80 | } catch (Exception ex) { 81 | getLogger().severe("Failed to load plugin!"); 82 | ex.printStackTrace(); 83 | getServer().getPluginManager().disablePlugin(this); 84 | } 85 | } 86 | 87 | public void performJoin(Player player) { 88 | PlayerState st = new PlayerState(player); 89 | 90 | CachedSkin skin = cachedSkins.get(player.getUniqueId()); 91 | 92 | String url; 93 | try { 94 | url = downloader.getSkinUrl(player); 95 | } catch (ParseException e1) { 96 | url = null; 97 | getLogger().severe("Error parsing GameProfile data!"); 98 | e1.printStackTrace(); 99 | } 100 | 101 | if (skin == null || (url != null && !skin.skinUrl.equals(url))) { 102 | st.currentSkin = getDefaultSkin(st); 103 | String finalUrl = url; 104 | 105 | if (url != null) { 106 | downloader.beginDownloadSkin(url, img -> { 107 | if (img != null) { 108 | BitmapSupplier supplier = buildSupplier(img); 109 | Bukkit.getScheduler().runTask(this, () -> { 110 | CachedSkin sk = new CachedSkin(finalUrl, 111 | player.getUniqueId(), supplier); 112 | cachedSkins.put(sk.owner, sk); 113 | st.currentSkin = sk; 114 | }); 115 | } 116 | }); 117 | } 118 | } 119 | 120 | playerState.put(player.getUniqueId(), st); 121 | } 122 | 123 | @EventHandler 124 | public void onJoin(PlayerJoinEvent e) { 125 | performJoin(e.getPlayer()); 126 | } 127 | 128 | @EventHandler 129 | public void onMove(PlayerMoveEvent e) { 130 | if (e.getFrom().distanceSquared(e.getTo()) > 0.0) { 131 | playerState.get(e.getPlayer().getUniqueId()).lastMovementTime = 132 | System.currentTimeMillis(); 133 | } 134 | } 135 | 136 | @EventHandler 137 | public void onQuit(PlayerQuitEvent e) { 138 | playerState.remove(e.getPlayer().getUniqueId()); 139 | } 140 | 141 | public BitmapSupplier buildSupplier(BufferedImage img) { 142 | return new BitmapSupplier(Effect.COLOURED_DUST, 1, 60, 143 | new SkinPixelProvider(img), 8, 8, 2.0f, 2.0f, 8.0f, 8.0f); 144 | } 145 | 146 | public CachedSkin getDefaultSkin(PlayerState p) { 147 | return p.defSkinModel == DefaultSkinModel.STEVE ? steveSkin : alexSkin; 148 | } 149 | 150 | private class PlayerTicker implements Runnable { 151 | 152 | @Override 153 | public void run() { 154 | for (PlayerState st : playerState.values()) { 155 | if (System.currentTimeMillis() - st.lastMovementTime > 100) { 156 | 157 | Location ploc = st.player.getLocation().add(0, 3.0, 0); 158 | Vector3 direction = Vector3.from(ploc.getDirection()) 159 | .stripY(); 160 | Vector3 position = Vector3.from(ploc); 161 | st.currentSkin.supplier.transformVectors( 162 | LinearTransf.translate(0.1f, 0.0f, 0.0f).andThen( 163 | LinearTransf.rotateRenderPlane(direction) 164 | .andThen(LinearTransf 165 | .translate(position)))) 166 | .supply(1).forEach((p) -> 167 | p.particle.spawn(st.player.getWorld(), p.position)); 168 | } 169 | } 170 | } 171 | } 172 | 173 | private class SkinCacheCleanupper implements Runnable { 174 | 175 | @Override 176 | public void run() { 177 | Iterator iterator = cachedSkins.values().iterator(); 178 | while (iterator.hasNext()) { 179 | CachedSkin k = iterator.next(); 180 | boolean timedout = System.currentTimeMillis() - 181 | k.timestamp > 1800; 182 | if (onlineIds.contains(k.owner)) { 183 | k.timestamp = System.currentTimeMillis(); 184 | } else if (timedout || 185 | (cachedSkins.size() > 200 && 186 | onlineIds.size() < cachedSkins.size())) { 187 | iterator.remove(); 188 | } 189 | } 190 | } 191 | } 192 | } 193 | -------------------------------------------------------------------------------- /examples/libtrails-example-skin-gadget/src/main/java/com/devcexx/libtrails/examples/skin/SkinPixelProvider.java: -------------------------------------------------------------------------------- 1 | /* 2 | * This file is part of libtrails. 3 | * libtrails is free software: you can redistribute it and/or modify 4 | * it under the terms of the GNU General Public License as published by 5 | * the Free Software Foundation, either version 3 of the License, or 6 | * (at your option) any later version. 7 | * 8 | * libtrails is distributed in the hope that it will be useful, 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 | * GNU General Public License for more details. 12 | * 13 | * You should have received a copy of the GNU General Public License 14 | * along with libtrails. If not, see . 15 | */ 16 | 17 | package com.devcexx.libtrails.examples.skin; 18 | 19 | import java.awt.image.BufferedImage; 20 | import java.util.function.IntBinaryOperator; 21 | 22 | public class SkinPixelProvider implements IntBinaryOperator { 23 | private final BufferedImage skin; 24 | 25 | public SkinPixelProvider(BufferedImage skin) { 26 | this.skin = skin; 27 | } 28 | 29 | @Override 30 | public int applyAsInt(int x, int y) { 31 | 32 | //Test for helmet 33 | int color = skin.getRGB(40 + x, 8 + y); 34 | if (((color >> 24) & 0xFF) > 0) { //Check for total transparency 35 | return color; 36 | } else { 37 | //If there's not helmet at that position, return the 38 | //color of the normal head. 39 | return skin.getRGB(8 + x, 8 + y); 40 | } 41 | } 42 | } 43 | -------------------------------------------------------------------------------- /examples/libtrails-example-skin-gadget/src/main/resources/alex.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/devcexx/libtrails/053f8caebd819607becd0f903a22fdf60cb82217/examples/libtrails-example-skin-gadget/src/main/resources/alex.png -------------------------------------------------------------------------------- /examples/libtrails-example-skin-gadget/src/main/resources/plugin.yml: -------------------------------------------------------------------------------- 1 | name: ${project.artifactId} 2 | version: ${project.version} 3 | author: devcexx 4 | main: com.devcexx.libtrails.examples.skin.SkinExample -------------------------------------------------------------------------------- /examples/libtrails-example-skin-gadget/src/main/resources/steve.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/devcexx/libtrails/053f8caebd819607becd0f903a22fdf60cb82217/examples/libtrails-example-skin-gadget/src/main/resources/steve.png -------------------------------------------------------------------------------- /examples/pom.xml: -------------------------------------------------------------------------------- 1 | 2 | 5 | 6 | 4.0.0 7 | 8 | 9 | com.devcexx 10 | libtrails-parent 11 | 1.0-SNAPSHOT 12 | ../pom.xml 13 | 14 | 15 | libtrails-examples 16 | 1.0 17 | pom 18 | 19 | 20 | libtrails-example-basic 21 | libtrails-example-skin-gadget 22 | libtrails-example-colorful 23 | 24 | 25 | 26 | 27 | 28 | 29 | org.apache.maven.plugins 30 | maven-shade-plugin 31 | 2.4.3 32 | 33 | 34 | 35 | package 36 | 37 | shade 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | com.devcexx:libtrails 46 | 47 | 48 | 49 | 50 | 51 | org.apache.maven.plugins 52 | maven-compiler-plugin 53 | 3.5.1 54 | 55 | 56 | 1.8 57 | 1.8 58 | 59 | 60 | 61 | 62 | 63 | -------------------------------------------------------------------------------- /library/pom.xml: -------------------------------------------------------------------------------- 1 | 2 | 5 | 4.0.0 6 | 7 | 8 | com.devcexx 9 | libtrails-parent 10 | 1.0-SNAPSHOT 11 | 12 | 13 | libtrails 14 | 1.0.3 15 | 16 | 17 | 18 | spigot-repo 19 | https://hub.spigotmc.org/nexus/content/repositories/snapshots/ 20 | 21 | 22 | 23 | 24 | 25 | org.spigotmc 26 | spigot-api 27 | 1.11.2-R0.1-SNAPSHOT 28 | provided 29 | 30 | 31 | 32 | 33 | 34 | 35 | org.apache.maven.plugins 36 | maven-javadoc-plugin 37 | 2.7 38 | 39 | 40 | 41 | prepare-javadoc 42 | prepare-package 43 | 44 | javadoc 45 | 46 | 47 | 48 | attach-javadoc 49 | package 50 | 51 | jar 52 | 53 | 54 | 55 | 56 | 57 | 58 | -------------------------------------------------------------------------------- /library/src/main/java/com/devcexx/libtrails/EntityTrail.java: -------------------------------------------------------------------------------- 1 | /* 2 | * This file is part of libtrails. 3 | * libtrails is free software: you can redistribute it and/or modify 4 | * it under the terms of the GNU General Public License as published by 5 | * the Free Software Foundation, either version 3 of the License, or 6 | * (at your option) any later version. 7 | * 8 | * libtrails is distributed in the hope that it will be useful, 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 | * GNU General Public License for more details. 12 | * 13 | * You should have received a copy of the GNU General Public License 14 | * along with libtrails. If not, see . 15 | */ 16 | 17 | package com.devcexx.libtrails; 18 | 19 | import org.bukkit.Bukkit; 20 | import org.bukkit.Location; 21 | import org.bukkit.entity.Arrow; 22 | import org.bukkit.entity.Entity; 23 | import org.bukkit.plugin.Plugin; 24 | import org.bukkit.scheduler.BukkitTask; 25 | 26 | import java.util.function.Function; 27 | 28 | /** 29 | * Represents a trail of particles that can be synchronized with the movement 30 | * and the direction of an entity. 31 | */ 32 | public class EntityTrail { 33 | 34 | /** 35 | * The entity that owns this trail. 36 | */ 37 | public final Entity entity; 38 | 39 | /** 40 | * The plugin that will register all the tasks. 41 | */ 42 | public final Plugin plugin; 43 | 44 | /** 45 | * The interval of the scheduled task. 46 | */ 47 | public final int taskInterval; 48 | 49 | /** 50 | * The transformation applied to the direction of the entity that allows 51 | * to correctly apply a trail over it. 52 | */ 53 | public Function entityDirectionTransformer; 54 | 55 | /** 56 | * The transformation applied to the position of the entity that allows 57 | * to correctly apply a trail over it. 58 | */ 59 | public Function entityPositionTransformer; 60 | 61 | /** 62 | * The supplier of the trail that will be applied over the entity. 63 | */ 64 | public ParticleSupplier trail; 65 | 66 | /** 67 | * The number of ticks that of life that the trail has. 68 | */ 69 | public int ticksAlive; 70 | 71 | private boolean began; 72 | private BukkitTask task; 73 | 74 | /** 75 | * Determines whether the particle is being rendered or not. 76 | * @return true if does. false otherwhise. 77 | */ 78 | public boolean hasBegun() { 79 | return began; 80 | } 81 | 82 | private static Function getDefaultDirFunction(Entity e){ 83 | if (e instanceof Arrow) 84 | return v -> v.mul(-1.0f, -1.0f, 1.0f); 85 | return v -> v; 86 | 87 | } 88 | 89 | /** 90 | * Creates a new {@link EntityTrail} with the default transformations for 91 | * both position and entity location, optimized for each entity. 92 | * @param plugin The plugin that owns this trail. 93 | * @param entity The entity that owns this trail. 94 | * @param trail The trail that will be applied. 95 | * @param interval The interval, in Minecraft ticks, of the task that will 96 | * render the trail. 97 | */ 98 | public EntityTrail(Plugin plugin, Entity entity, ParticleSupplier trail, 99 | int interval) { 100 | this(plugin, entity, getDefaultDirFunction(entity), v -> v, trail, 101 | interval); 102 | } 103 | 104 | /** 105 | * Creates a new {@link EntityTrail}. 106 | * @param plugin The plugin that owns this trail. 107 | * @param entity The entity that owns this trail. 108 | * @param directionTransf The transformation applied to the direction of the 109 | * entity that allows to correctly apply a trail 110 | * over it. 111 | * @param positionTransf The transformation applied to the position of the 112 | * entity that allows to correctly apply a trail 113 | * over it. 114 | * @param trail The trail that will be applied. 115 | * @param interval The interval, in Minecraft ticks, of the task that will 116 | * render the trail. 117 | */ 118 | public EntityTrail(Plugin plugin, Entity entity, 119 | Function directionTransf, 120 | Function positionTransf, 121 | ParticleSupplier trail, int interval) { 122 | this.entityDirectionTransformer = directionTransf == null 123 | ? v -> v : directionTransf; 124 | this.entityPositionTransformer = positionTransf == null 125 | ? v -> v : positionTransf; 126 | this.entity = entity; 127 | this.trail = trail; 128 | this.taskInterval = interval; 129 | this.plugin = plugin; 130 | } 131 | 132 | /** 133 | * Begins the task to render the trail. If the task is already started, it 134 | * does nothing. 135 | */ 136 | public void begin() { 137 | if (!began) { 138 | began = true; 139 | task = Bukkit.getScheduler().runTaskTimer(plugin, new TrailTicker(), 140 | 0, taskInterval); 141 | } 142 | } 143 | 144 | /** 145 | * Stops the trail rendering. If the {@link #begin()} method is called again 146 | * after invoking this method, the trail will be start rendering with the 147 | * value of ticksAlive that has when it stopped, unless the method 148 | * {@link #reset()} is called before. 149 | */ 150 | public void stop() { 151 | if (began) { 152 | task.cancel(); 153 | task = null; 154 | began = false; 155 | } 156 | } 157 | 158 | /** 159 | * Resets the life of the trail to zero. 160 | */ 161 | public void reset() { 162 | ticksAlive = 0; 163 | } 164 | 165 | private class TrailTicker implements Runnable { 166 | 167 | @Override 168 | public void run() { 169 | if (entity.isDead() || !entity.isValid()) { 170 | stop(); 171 | } else { 172 | Location eLoc = entity.getLocation(); 173 | Vector3 position = entityPositionTransformer.apply(Vector3 174 | .from(eLoc)); 175 | Vector3 direction = entityDirectionTransformer.apply(Vector3 176 | .from(eLoc.getDirection())); 177 | 178 | ParticleSupplier finalSupplier = trail.transformVectors( 179 | LinearTransf.rotateRenderPlane(direction) 180 | .andThen(LinearTransf.translate(position))); 181 | 182 | finalSupplier.supply(ticksAlive).forEach((p) -> p.particle 183 | .spawn(eLoc.getWorld(), p.position, ticksAlive)); 184 | ticksAlive += taskInterval; 185 | } 186 | } 187 | } 188 | } 189 | -------------------------------------------------------------------------------- /library/src/main/java/com/devcexx/libtrails/LinearTransf.java: -------------------------------------------------------------------------------- 1 | /* 2 | * This file is part of libtrails. 3 | * libtrails is free software: you can redistribute it and/or modify 4 | * it under the terms of the GNU General Public License as published by 5 | * the Free Software Foundation, either version 3 of the License, or 6 | * (at your option) any later version. 7 | * 8 | * libtrails is distributed in the hope that it will be useful, 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 | * GNU General Public License for more details. 12 | * 13 | * You should have received a copy of the GNU General Public License 14 | * along with libtrails. If not, see . 15 | */ 16 | 17 | package com.devcexx.libtrails; 18 | 19 | import java.util.function.Function; 20 | 21 | public abstract class LinearTransf { 22 | public static Function translate(float xoffset, 23 | float yoffset, 24 | float zoffset) { 25 | return v -> v.add(xoffset, yoffset, zoffset); 26 | } 27 | 28 | public static Function translate(Vector3 vec) { 29 | return v -> v.add(vec); 30 | } 31 | 32 | public static Function scale(float scaleFactor) { 33 | return v -> v.scale(scaleFactor); 34 | } 35 | 36 | public static Function rotate(Vector3 axis, float angle) { 37 | return v -> v.rotate(axis, angle); 38 | } 39 | 40 | public static Function rotateRenderPlane(Vector3 normal) { 41 | //Gets the rotation axis of the transformation. 42 | Vector3 axis = Vector3.AXIS_Y.cross(normal).normalize(); 43 | if (axis.equals(Vector3.ORIGIN)) { 44 | if (Vector3.AXIS_Y.dot(normal) > 0) { 45 | //Axis Y has the same direction as normal. Nothing to do 46 | return v -> v; 47 | } else { 48 | //Axis Y is opposite to normal. 49 | axis = Vector3.AXIS_Z; 50 | } 51 | } 52 | 53 | //Get normal vector on the XZ plane. 54 | Vector3 xzvector = normal.stripY(); 55 | 56 | //Gets the rotation angle of the normal vector 57 | //around the y axis. 58 | float yAngle = (float) Vector3.AXIS_Z.fullAngle(xzvector, 59 | Vector3.AXIS_Y); 60 | 61 | //Gets the rotation axis of the transformation. 62 | float angle = (float) normal.angle(Vector3.AXIS_Y); 63 | 64 | //First rotation: rotates the point around the y axis 65 | //to place the drawing in front of the rotation axis, to avoid 66 | //unexpected rotations. 67 | 68 | //Second rotation: rotates the point around the axis of the 69 | //rotation between the Y axis and the new normal axis, to place 70 | //the drawing inside the plane. 71 | Vector3 faxis = axis; 72 | return v -> v.rotateY(yAngle + (float) Math.PI).rotate(faxis, angle); 73 | } 74 | } 75 | -------------------------------------------------------------------------------- /library/src/main/java/com/devcexx/libtrails/Particle.java: -------------------------------------------------------------------------------- 1 | /* 2 | * This file is part of libtrails. 3 | * libtrails is free software: you can redistribute it and/or modify 4 | * it under the terms of the GNU General Public License as published by 5 | * the Free Software Foundation, either version 3 of the License, or 6 | * (at your option) any later version. 7 | * 8 | * libtrails is distributed in the hope that it will be useful, 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 | * GNU General Public License for more details. 12 | * 13 | * You should have received a copy of the GNU General Public License 14 | * along with libtrails. If not, see . 15 | */ 16 | 17 | package com.devcexx.libtrails; 18 | 19 | import lombok.AllArgsConstructor; 20 | import lombok.Builder; 21 | import lombok.With; 22 | import lombok.experimental.Tolerate; 23 | import org.bukkit.Effect; 24 | import org.bukkit.Location; 25 | import org.bukkit.World; 26 | import org.bukkit.entity.Player; 27 | 28 | import java.util.function.Function; 29 | 30 | @With 31 | @Builder 32 | @AllArgsConstructor 33 | public class Particle { 34 | private final Effect effect; 35 | private final int id; 36 | private final int data; 37 | 38 | private final Function offsetX; 39 | private final Function offsetY; 40 | private final Function offsetZ; 41 | 42 | private final Function speed; 43 | private final Function count; 44 | private final int radius; 45 | 46 | public Particle withOffset(float offX, float offY, float offZ) { 47 | return new Particle(effect, id, data, (tick) -> offX, (tick) -> offY, (tick) -> offZ, 48 | speed, count, radius); 49 | } 50 | 51 | public Particle withOffset(Function fx, 52 | Function fy, 53 | Function fz) { 54 | return new Particle(effect, id, data, fx, fy, fz, 55 | speed, count, radius); 56 | } 57 | 58 | @Tolerate 59 | public Particle withOffsetX(float offX) { 60 | return withOffsetX((tick) -> offX); 61 | } 62 | 63 | @Tolerate 64 | public Particle withOffsetY(float offY) { 65 | return withOffsetY((tick) -> offY); 66 | } 67 | 68 | @Tolerate 69 | public Particle withOffsetZ(float offZ) { 70 | return withOffsetZ((tick) -> offZ); 71 | } 72 | 73 | @Tolerate 74 | public Particle withSpeed(float speed) { 75 | return withSpeed((tick) -> speed); 76 | } 77 | 78 | @Tolerate 79 | public Particle withCount(int count) { 80 | return withCount((tick) -> count); 81 | } 82 | 83 | public void spawn(Player p, Vector3 loc) { 84 | spawn(p, loc, 0); 85 | } 86 | 87 | public void spawn(Player p, float x, float y, float z) { 88 | spawn(p, x, y, z, 0); 89 | } 90 | 91 | public void spawn(World w, Vector3 loc) { 92 | spawn(w, loc, 0); 93 | } 94 | 95 | public void spawn(World w, float x, float y, float z) { 96 | spawn(w, x, y, z, 0); 97 | } 98 | 99 | public void spawn(Player p, Vector3 loc, int tick) { 100 | spawn0(p, loc.toLocation(p.getWorld()), tick); 101 | } 102 | 103 | public void spawn(Player p, float x, float y, float z, int tick) { 104 | spawn0(p, new Location(p.getWorld(), x, y, z), tick); 105 | } 106 | 107 | public void spawn(World w, Vector3 loc, int tick) { 108 | spawn0(w, loc.toLocation(w), tick); 109 | } 110 | 111 | public void spawn(World w, float x, float y, float z, int tick) { 112 | spawn0(w, new Location(w, x, y, z), tick); 113 | } 114 | 115 | private void spawn0(Object o, Location loc, int tick) { 116 | float offx = this.offsetX.apply(tick); 117 | float offy = this.offsetY.apply(tick); 118 | float offz = this.offsetZ.apply(tick); 119 | float speed = this.speed.apply(tick); 120 | int n = this.count.apply(tick); 121 | 122 | if (o instanceof Player) { 123 | ((Player)o).spigot().playEffect(loc, effect, id, data, 124 | offx, offy, offz, speed, n, radius); 125 | } else { 126 | ((World)o).spigot().playEffect(loc, effect, id, data, 127 | offx, offy, offz, speed, n, radius); 128 | } 129 | } 130 | 131 | public static class ParticleBuilder { 132 | public ParticleBuilder() { 133 | this.offsetX = (tick) -> 0.0f; 134 | this.offsetY = (tick) -> 0.0f; 135 | this.offsetZ = (tick) -> 0.0f; 136 | this.speed = (tick) -> 0.0f; 137 | this.count = (tick) -> 1; 138 | } 139 | 140 | @Tolerate 141 | public ParticleBuilder offsetX(float offsetX) { 142 | return offsetX((tick) -> offsetX); 143 | } 144 | 145 | @Tolerate 146 | public ParticleBuilder offsetY(float offsetY) { 147 | return offsetY((tick) -> offsetY); 148 | } 149 | 150 | @Tolerate 151 | public ParticleBuilder offsetZ(float offsetZ) { 152 | return offsetZ((tick) -> offsetZ); 153 | } 154 | 155 | @Tolerate 156 | public ParticleBuilder speed(float speed) { 157 | return speed((tick) -> speed); 158 | } 159 | 160 | @Tolerate 161 | public ParticleBuilder count(int count) { 162 | return count((tick) -> count); 163 | } 164 | } 165 | } 166 | -------------------------------------------------------------------------------- /library/src/main/java/com/devcexx/libtrails/ParticleSupplier.java: -------------------------------------------------------------------------------- 1 | /* 2 | * This file is part of libtrails. 3 | * libtrails is free software: you can redistribute it and/or modify 4 | * it under the terms of the GNU General Public License as published by 5 | * the Free Software Foundation, either version 3 of the License, or 6 | * (at your option) any later version. 7 | * 8 | * libtrails is distributed in the hope that it will be useful, 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 | * GNU General Public License for more details. 12 | * 13 | * You should have received a copy of the GNU General Public License 14 | * along with libtrails. If not, see . 15 | */ 16 | 17 | package com.devcexx.libtrails; 18 | 19 | import java.util.function.BiFunction; 20 | import java.util.function.Function; 21 | import java.util.stream.Stream; 22 | 23 | /** 24 | * An interface that identifies a class as a particle supplier for a determined 25 | * particle trails. 26 | */ 27 | public interface ParticleSupplier { 28 | 29 | /** 30 | * Returns a stream of particles that should be render at the specified 31 | * moment. 32 | * @param tick a number that the particle rendering should be dependent of. 33 | * The caller of this method should invoke it with consecutive 34 | * values of this number, with a fixed delay rate, to ensure 35 | * the particle system is rendered correctly. 36 | * @return an Stream that contains the particles that should be render 37 | * at this moment. 38 | */ 39 | Stream supply(int tick); 40 | 41 | /** 42 | * Creates a {@link ParticleSupplier} whose {@link #supply(int)} method 43 | * returns the current output stream transformed by the specified function. 44 | * @param f A {@link BiFunction} that requires a Stream, as the Stream 45 | * that should be transformed; and an Integer, as the tick 46 | * parameter of the {@link #supply(int)} call, and returns the 47 | * transformed Stream. 48 | * @return a new ParticleSupplier with its {@link #supply(int)} output value 49 | * transformed as requested. 50 | */ 51 | default ParticleSupplier transformStream( 52 | BiFunction, Integer, 53 | Stream> f) { 54 | return tick -> f.apply(ParticleSupplier.this.supply(tick), tick); 55 | } 56 | 57 | /** 58 | * Creates a {@link ParticleSupplier} whose {@link #supply(int)} returns 59 | * the current output stream where all of its entries are transformed by 60 | * the specified function. 61 | * @param f A {@link BiFunction} that requires a {@link SuppliedParticle}, 62 | * as the particle to transform, and an Integer, as the tick 63 | * parameter of the {@link #supply(int)} call, and returns the 64 | * transformed particle. 65 | * @return a new ParticleSupplier with its {@link #supply(int)} output value 66 | * transformed as requested. 67 | */ 68 | default ParticleSupplier transformParticles( 69 | BiFunction f) { 70 | return transformStream((s, t) -> s.map(p -> f.apply(p, t))); 71 | } 72 | 73 | /** 74 | * Creates a {@link ParticleSupplier} whose {@link #supply(int)} returns 75 | * the current output stream where all of its entries are transformed by 76 | * the specified function. 77 | * @param f A {@link BiFunction} that requires a {@link SuppliedParticle}, 78 | * as the particle to transform, and an Integer, as the tick 79 | * parameter of the {@link #supply(int)} call, and returns the 80 | * transformed particle. 81 | * @return a new ParticleSupplier with its {@link #supply(int)} output value 82 | * transformed as requested. 83 | */ 84 | default ParticleSupplier transformVectors(Function f) { 85 | return transformStream((s, t) -> s.map(p -> p.with(f.apply(p.position)))); 86 | } 87 | 88 | default ParticleSupplier combine(ParticleSupplier... others) { 89 | return transformStream((s, t) -> { 90 | Stream stream = s; 91 | for (ParticleSupplier p : others) { 92 | stream = Stream.concat(s, p.supply(t)); 93 | } 94 | return stream; 95 | }); 96 | } 97 | 98 | /** 99 | * Creates a {@link ParticleSupplier} whose {@link #supply(int)} returns 100 | * the current output stream where all of its entries are translated as 101 | * specified. 102 | * @param f a {@link Function} that takes an Integer, as the tick of the 103 | * current call, and returns the translation vector for that tick. 104 | * @return a new ParticleSupplier with its {@link #supply(int)} output value 105 | * transformed as requested. 106 | */ 107 | default ParticleSupplier translate(Function f) { 108 | return transformParticles((p, t) -> p.with(p.position.add(f.apply(t)))); 109 | } 110 | 111 | /** 112 | * Creates a {@link ParticleSupplier} whose {@link #supply(int)} returns 113 | * the current output stream where all of its entries are scaled as 114 | * specified. 115 | * @param f a {@link Function} that takes an Integer, as the tick of the 116 | * current call, and returns the scale factor for that tick. 117 | * @return a new ParticleSupplier with its {@link #supply(int)} output value 118 | * transformed as requested. 119 | */ 120 | default ParticleSupplier scale(Function f) { 121 | return transformParticles((p, t) -> p.with(p.position 122 | .scale(f.apply(t)))); 123 | } 124 | 125 | /** 126 | * Creates a {@link ParticleSupplier} whose {@link #supply(int)} returns 127 | * the current output stream where all of its entries are rotated as 128 | * specified. 129 | * @param f a {@link Function} that takes an Integer, as the tick of the 130 | * current call, and returns the rotation angle around the x axis 131 | * for that tick. 132 | * @return a new ParticleSupplier with its {@link #supply(int)} output value 133 | * transformed as requested. 134 | */ 135 | default ParticleSupplier rotateX(Function f) { 136 | return transformParticles((p, t) -> p.with(p.position 137 | .rotateX(f.apply(t)))); 138 | } 139 | 140 | /** 141 | * Creates a {@link ParticleSupplier} whose {@link #supply(int)} returns 142 | * the current output stream where all of its entries are rotated as 143 | * specified. 144 | * @param f a {@link Function} that takes an Integer, as the tick of the 145 | * current call, and returns the rotation angle around the y axis 146 | * for that tick. 147 | * @return a new ParticleSupplier with its {@link #supply(int)} output value 148 | * transformed as requested. 149 | */ 150 | default ParticleSupplier rotateY(Function f) { 151 | return transformParticles((p, t) -> p.with(p.position 152 | .rotateY(f.apply(t)))); 153 | } 154 | 155 | /** 156 | * Creates a {@link ParticleSupplier} whose {@link #supply(int)} returns 157 | * the current output stream where all of its entries are rotated as 158 | * specified. 159 | * @param f a {@link Function} that takes an Integer, as the tick of the 160 | * current call, and returns the rotation angle around the z axis 161 | * for that tick. 162 | * @return a new ParticleSupplier with its {@link #supply(int)} output value 163 | * transformed as requested. 164 | */ 165 | default ParticleSupplier rotateZ(Function f) { 166 | return transformParticles((p, t) -> p.with(p.position 167 | .rotateZ(f.apply(t)))); 168 | } 169 | 170 | } 171 | -------------------------------------------------------------------------------- /library/src/main/java/com/devcexx/libtrails/SuppliedParticle.java: -------------------------------------------------------------------------------- 1 | /* 2 | * This file is part of libtrails. 3 | * libtrails is free software: you can redistribute it and/or modify 4 | * it under the terms of the GNU General Public License as published by 5 | * the Free Software Foundation, either version 3 of the License, or 6 | * (at your option) any later version. 7 | * 8 | * libtrails is distributed in the hope that it will be useful, 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 | * GNU General Public License for more details. 12 | * 13 | * You should have received a copy of the GNU General Public License 14 | * along with libtrails. If not, see . 15 | */ 16 | 17 | package com.devcexx.libtrails; 18 | 19 | /** 20 | * Represents a particle provided by a {@link ParticleSupplier}, ready to be 21 | * spawned. 22 | */ 23 | public class SuppliedParticle { 24 | /** 25 | * The particle that should be rendered. 26 | */ 27 | public final Particle particle; 28 | 29 | /** 30 | * The position of the particle respect the origin. 31 | */ 32 | public final Vector3 position; 33 | 34 | /** 35 | * Creates a new supplied particle, from the specified particle and offset. 36 | * @param particle The particle that should be rendered. 37 | * @param position The position of the particle respect the origin. 38 | */ 39 | public SuppliedParticle(Particle particle, Vector3 position) { 40 | this.particle = particle; 41 | this.position = position; 42 | } 43 | 44 | /** 45 | * Returns a new {@link SuppliedParticle} with the specified particle. 46 | * @param p the new particle. 47 | * @return A new instance of the {@link SuppliedParticle} with the specified 48 | * particle, and the same offset. 49 | */ 50 | public SuppliedParticle with(Particle p) { 51 | return new SuppliedParticle(p, position); 52 | } 53 | 54 | /** 55 | * Returns a new {@link SuppliedParticle} wt 56 | * @param o the new offset. 57 | * @return A new instance of the {@link SuppliedParticle} with the same 58 | * particle and the specified new offset. 59 | */ 60 | public SuppliedParticle with(Vector3 o) { 61 | return new SuppliedParticle(particle, o); 62 | } 63 | } 64 | -------------------------------------------------------------------------------- /library/src/main/java/com/devcexx/libtrails/TrailUtil.java: -------------------------------------------------------------------------------- 1 | /* 2 | * This file is part of libtrails. 3 | * libtrails is free software: you can redistribute it and/or modify 4 | * it under the terms of the GNU General Public License as published by 5 | * the Free Software Foundation, either version 3 of the License, or 6 | * (at your option) any later version. 7 | * 8 | * libtrails is distributed in the hope that it will be useful, 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 | * GNU General Public License for more details. 12 | * 13 | * You should have received a copy of the GNU General Public License 14 | * along with libtrails. If not, see . 15 | */ 16 | 17 | package com.devcexx.libtrails; 18 | 19 | /** 20 | * Provides some methods to perform some common operations. 21 | */ 22 | public abstract class TrailUtil { 23 | 24 | /** 25 | * Returns an approximation of the inverse square root of the specified 26 | * number. 27 | * @param n A number greater or equal to zero, whose inverse square root 28 | * will be calculated. 29 | * @return the inverse square root of the specified number. 30 | */ 31 | public static double isqrt(double n) { 32 | double xhalf = 0.5 * n; 33 | long i = Double.doubleToRawLongBits(n); 34 | i = 0x5FE6EB50C7B537AAL - (i>>1); 35 | n = Double.longBitsToDouble(i); 36 | n = n * (1.5 - xhalf*n*n); 37 | return n; 38 | } 39 | 40 | /** 41 | * Returns an approximation of the square root of the specified number. 42 | * This method is equivalent to {@code 1.0 / isqrt(n)} 43 | * @param n A number greater or equal to zero, whose square root 44 | * will be calculated. 45 | * @return the square root of the specified number. 46 | */ 47 | public static double sqrt(double n) 48 | { 49 | return 1.0 / isqrt(n); 50 | } 51 | 52 | /** 53 | * Returns the Greatest Common Division using a recursive algorithm based 54 | * on the Euclides theorem. 55 | * @param a the first number, positive. 56 | * @param b the second number, positive. 57 | * @return The Greatest Common Division of the input numbers. 58 | */ 59 | public static int gcd(int a, int b) { 60 | int min = Math.min(a,b); 61 | int max = Math.max(a,b); 62 | 63 | int r = max % min; 64 | if (r == 0) { 65 | return min; 66 | } else { 67 | return gcd(min, r); 68 | } 69 | } 70 | 71 | /** 72 | * Draws a line into the specified array. 73 | * @param buffer The array where the line will be w 74 | * @param p The particles that will be used to draw the line. 75 | * @param index The first index where the line particles will be placed. 76 | * @param from The location of the first point of the line. 77 | * @param director The unit vector that defines the direction of the line. 78 | * @param step The distance between each point of the line. 79 | * @param n The number of the points of the line. 80 | */ 81 | public static void fillWithLine(SuppliedParticle[] buffer, Particle p, 82 | int index, Vector3 from, 83 | Vector3 director, float step, int n) { 84 | for (int i = 0; i < n; i++) { 85 | buffer[index + i] = new SuppliedParticle(p, 86 | from.add(director.mul(step * i))); 87 | } 88 | } 89 | } 90 | -------------------------------------------------------------------------------- /library/src/main/java/com/devcexx/libtrails/Vector3.java: -------------------------------------------------------------------------------- 1 | /* 2 | * This file is part of libtrails. 3 | * libtrails is free software: you can redistribute it and/or modify 4 | * it under the terms of the GNU General Public License as published by 5 | * the Free Software Foundation, either version 3 of the License, or 6 | * (at your option) any later version. 7 | * 8 | * libtrails is distributed in the hope that it will be useful, 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 | * GNU General Public License for more details. 12 | * 13 | * You should have received a copy of the GNU General Public License 14 | * along with libtrails. If not, see . 15 | */ 16 | 17 | package com.devcexx.libtrails; 18 | 19 | import lombok.Data; 20 | import org.bukkit.Location; 21 | import org.bukkit.World; 22 | import org.bukkit.block.Block; 23 | import org.bukkit.util.Vector; 24 | 25 | /** 26 | * Represents a vector member of the R^3 Euclidean vector space and provides 27 | * methods to transform it. This class is immutable. This means that the 28 | * components xyz of the vector cannot be modified after the constructor, and 29 | * all the methods that returns instances of Vector3 will return fresh instances 30 | * of this class. 31 | * 32 | * @author devcexx 33 | */ 34 | @Data 35 | public class Vector3 { 36 | /** 37 | * A final field that contains the null vector of the Euclidean space 38 | * (0,0,0) 39 | */ 40 | public static final Vector3 ORIGIN = new Vector3(0,0,0); 41 | 42 | /** 43 | * A final field that contains the director vector of the X-axis of the 44 | * canonical base. 45 | */ 46 | public static final Vector3 AXIS_X = new Vector3(1,0,0); 47 | 48 | /** 49 | * A final field that contains the director vector of the Y-axis of the 50 | * canonical base. 51 | */ 52 | public static final Vector3 AXIS_Y = new Vector3(0,1,0); 53 | 54 | /** 55 | * A final field that contains the director vector of the Z-axis of the 56 | * canonical base. 57 | */ 58 | public static final Vector3 AXIS_Z = new Vector3(0,0,1); 59 | 60 | /** 61 | * The X component of the vector. 62 | */ 63 | public final float x; 64 | 65 | /** 66 | * The Y component of the vector. 67 | */ 68 | public final float y; 69 | 70 | /** 71 | * The Z component of the vector. 72 | */ 73 | public final float z; 74 | 75 | /** 76 | * Creates a new instance of a Vector3 with the specified components. 77 | * @param x The x component of the new vector. 78 | * @param y The y component of the new vector. 79 | * @param z The z component of the new vector. 80 | */ 81 | public Vector3(float x, float y, float z) { 82 | this.x = x; 83 | this.y = y; 84 | this.z = z; 85 | } 86 | 87 | /** 88 | * Creates a new instance of a Vector3 with the specified components. 89 | * @param x The x component of the new vector. 90 | * @param y The y component of the new vector. 91 | * @param z The z component of the new vector. 92 | */ 93 | public Vector3(double x, double y, double z) { 94 | this.x = (float) x; 95 | this.y = (float) y; 96 | this.z = (float) z; 97 | } 98 | 99 | /** 100 | * Creates a new instance of a Vector3 with the specified array of 101 | * components. 102 | * @param comps an array of three elements that contains the components 103 | * of the new vector. The components must in the order of 104 | * x, y, z. 105 | */ 106 | public Vector3(float[] comps) { 107 | this.x = comps[0]; 108 | this.y = comps[1]; 109 | this.z = comps[2]; 110 | } 111 | 112 | /** 113 | * Builds a new instance of this class from the components of a vector 114 | * from the Bukkit API. 115 | * @param v the source vector. 116 | * @return A new instance of this class with the same values as the source 117 | * vector. 118 | * 119 | * @see Vector 120 | */ 121 | public static Vector3 from(Vector v){ 122 | return new Vector3(v.getX(), v.getY(), v.getZ()); 123 | } 124 | 125 | /** 126 | * Builds a new instance of this class from the components of a Location 127 | * object from the Bukkit API. 128 | * @param l the source Location object. 129 | * @return A new instance of this class with the same values as the source 130 | * Object. 131 | * 132 | * @see Vector 133 | */ 134 | public static Vector3 from(Location l){ 135 | return new Vector3(l.getX(), l.getY(), l.getZ()); 136 | } 137 | 138 | /** 139 | * Builds a new instance of this class from the components of a Block 140 | * object from the Bukkit API. 141 | * @param l the source Block object. 142 | * @return A new instance of this class with the same values as the source 143 | * Object. 144 | * 145 | * @see Vector 146 | */ 147 | public static Vector3 from(Block l){ 148 | return new Vector3(l.getX(), l.getY(), l.getZ()); 149 | } 150 | 151 | /** 152 | * Determines if the current object is inside the cuboid defined by the 153 | * input vectors. 154 | * @param min The lower point of the cuboid, inclusive. 155 | * @param max The upper point of the cuboid, inclusive. 156 | * @return {@code true} if the current vector is contained in the cuboid. 157 | * {@code false} otherwise. 158 | */ 159 | public boolean isBetween(Vector3 min, Vector3 max){ 160 | return min.x >= x && min.y >= y && min.z >= z && 161 | x <= max.x && y <= max.y && z <= max.z; 162 | } 163 | 164 | /** 165 | * Create a new vector from the current one, but setting a new value for the 166 | * x component. 167 | * @param x The x component of the returned vector. 168 | * @return A new vector created from the current one, but with the specified 169 | * x component. 170 | */ 171 | public Vector3 withX(float x){ 172 | return new Vector3(x, y, z); 173 | } 174 | 175 | /** 176 | * Create a new vector from the current one, but setting a new value for the 177 | * y component. 178 | * @param y The y component of the returned vector. 179 | * @return A new vector created from the current one, but with the specified 180 | * y component. 181 | */ 182 | public Vector3 withY(float y){ 183 | return new Vector3(x, y, z); 184 | } 185 | 186 | /** 187 | * Create a new vector from the current one, but setting a new value for the 188 | * z component. 189 | * @param z The z component of the returned vector. 190 | * @return A new vector created from the current one, but with the specified 191 | * z component. 192 | */ 193 | public Vector3 withZ(float z){ 194 | return new Vector3(x, y, z); 195 | } 196 | 197 | /** 198 | * Sum up the components of the current vector with the specified ones. 199 | * @param x the x component. 200 | * @param y the y component. 201 | * @param z the z component. 202 | * @return A new vector that is the sum of the components of the current one 203 | * with the specified components. 204 | */ 205 | public Vector3 add(float x, float y, float z){ 206 | return new Vector3(this.x + x, this.y + y, this.z + z); 207 | } 208 | 209 | /** 210 | * Sum up the current vector with another. 211 | * @param other The vector to sum with. 212 | * @return A new vector that is the sum of the current vector with the 213 | * input vector. 214 | */ 215 | public Vector3 add(Vector3 other){ 216 | return add(other.x, other.y, other.z); 217 | } 218 | 219 | /** 220 | * Subtract up the components of the current vector with the specified ones. 221 | * @param x the x component. 222 | * @param y the y component. 223 | * @param z the z component. 224 | * @return A new vector that is the subtraction of the components of the 225 | * current on with the specified components. 226 | */ 227 | public Vector3 sub(float x, float y, float z){ 228 | return new Vector3(this.x - x, this.y - y, this.z - z); 229 | } 230 | 231 | /** 232 | * Subtract up the current vector with another. 233 | * @param other The vector to sum with. 234 | * @return A new vector that is the result of the subtraction of the current 235 | * vector with the input vector. 236 | */ 237 | public Vector3 sub(Vector3 other){ 238 | return sub(other.x, other.y, other.z); 239 | } 240 | 241 | /** 242 | * Multiplies all the components of the current vector by a factor f. 243 | * @param f the multiplication factor. 244 | * @return A new vector that is the result of the multiplication of all 245 | * the components of the current vector by a factor f. 246 | */ 247 | public Vector3 mul(float f){ 248 | return new Vector3(this.x * f, this.y * f, this.z * f); 249 | } 250 | 251 | /** 252 | * Multiplies each component of the current vector by its corresponding 253 | * component of the input vector. 254 | * @param f the multiplication vector. 255 | * @return A new vector that is the result of the multiplication of each 256 | * component of the current vector by its corresponding component of the 257 | * input vector. 258 | */ 259 | public Vector3 mul(Vector3 f){ 260 | return new Vector3(this.x * f.x, this.y * f.y, this.z * f.z); 261 | } 262 | 263 | /** 264 | * Multiplies each component of the current vector by its corresponding 265 | * specified component. 266 | * @param fx The x component. 267 | * @param fy The y component. 268 | * @param fz The z component. 269 | * @return A new vector that is the result of the multiplication of each 270 | * component of the current vector by its corresponding specified component. 271 | */ 272 | public Vector3 mul(float fx, float fy, float fz){ 273 | return new Vector3(this.x * fx, this.y * fy, this.z * fz); 274 | } 275 | 276 | /** 277 | * Divides all the components of the current vector by a divisor f. 278 | * @param f the divisor. 279 | * @return A new vector that is the result of the divison of all 280 | * the components of the current vector by a divisor f. 281 | */ 282 | public Vector3 div(float f){ 283 | return new Vector3(this.x / f, this.y / f, this.z / f); 284 | } 285 | 286 | /** 287 | * Divides each component of the current vector by its corresponding 288 | * component of the input vector. 289 | * @param f the divisor vector. 290 | * @return A new vector that is the result of the divsion of each 291 | * component of the current vector by its corresponding component of the 292 | * input vector. 293 | */ 294 | public Vector3 div(Vector3 f){ 295 | return new Vector3(this.x / f.x, this.y / f.y, this.z / f.z); 296 | } 297 | 298 | /** 299 | * Divides each component of the current vector by its corresponding 300 | * specified component. 301 | * @param fx The x component. 302 | * @param fy The y component. 303 | * @param fz The z component. 304 | * @return A new vector that is the result of the division of each 305 | * component of the current vector by its corresponding specified component. 306 | */ 307 | public Vector3 div(float fx, float fy, float fz){ 308 | return new Vector3(this.x / fx, this.y / fy, this.z / fz); 309 | } 310 | 311 | /** 312 | * Returns the dot product between the current vector and other. 313 | * @param other the other vector. 314 | * @return The dot product between the current vector and other in a float 315 | * number. 316 | */ 317 | public float dot(Vector3 other){ 318 | return this.x * other.x + this.y * other.y + this.z * other.z; 319 | } 320 | 321 | /** 322 | * Returns the vector that represents the cross product between this vector 323 | * and another, where this vector is the first operand, and the specified 324 | * vector, the second one. 325 | * @param o the other vector. 326 | * @return the cross product between this vector 327 | * and another. 328 | */ 329 | public Vector3 cross(Vector3 o){ 330 | return new Vector3( 331 | this.y * o.z - o.y * this.z, 332 | this.z * o.x - o.z * this.x, 333 | this.x * o.y - o.x * this.y 334 | ); 335 | } 336 | 337 | /** 338 | * Returns the mixed product, or the triple scalar product between this 339 | * vector and two more vectors, where the current vector is the first 340 | * operand of the dot product of the operation. 341 | * @param cross1 the first operand of the cross product. 342 | * @param cross2 the second operand of the cross product. 343 | * @return the mixed product of the current vector and another two ones. 344 | */ 345 | public float mixed(Vector3 cross1, Vector3 cross2){ 346 | return cross1.cross(cross2).dot(this); 347 | } 348 | 349 | /** 350 | * Returns the squared norm, or squared length of the current vector. 351 | * @return The squared norm of the current product. 352 | */ 353 | public double normSquared(){ 354 | return x * x + y * y + z * z; 355 | } 356 | 357 | /** 358 | * Returns the norm, or length, of the current vector. 359 | * @return the norm of the current vector. 360 | */ 361 | public double norm(){ 362 | return (float) TrailUtil.sqrt(normSquared()); 363 | } 364 | 365 | /** 366 | * Returns the squared distance between the current vector and the 367 | * specified one. 368 | * @param o The other vector. 369 | * @return The squared distance between the current vector and the 370 | * specified one. 371 | */ 372 | public float distanceSquared(Vector3 o){ 373 | float x = this.x - o.x; 374 | float y = this.y - o.y; 375 | float z = this.z - o.z; 376 | return x * x + y * y + z * z; 377 | } 378 | 379 | /** 380 | * Returns the Euclidean distance between the current vector and the 381 | * specified one. 382 | * @param o the other vector. 383 | * @return the euclidean distance between the current vector and the 384 | * specified one. 385 | */ 386 | public double distance(Vector3 o){ 387 | return TrailUtil.sqrt(distanceSquared(o)); 388 | } 389 | 390 | /** 391 | * Returns the cosine of the angle between the current vector and another. 392 | * @param o the other vector. 393 | * @return the cosine of the angle between the current vector and another. 394 | */ 395 | public float cosine(Vector3 o){ 396 | return this.dot(o) / ((float) this.norm() * (float) o.norm()); 397 | } 398 | 399 | /** 400 | * Returns the angle between the current vector and another. 401 | * @param o the other vector. 402 | * @return the angle in radians between the current vector and another. The 403 | * angle will be between 0 and π, inclusive. 404 | */ 405 | public double angle(Vector3 o){ 406 | return Math.acos(cosine(o)); 407 | } 408 | 409 | 410 | /** 411 | * Returns the full angle between the current vector and another. 412 | * @param o the other vector. 413 | * @param normal the vector perpendicular to the plane respect the angle 414 | * will be metered. 415 | * @return The angle between 0 and 2π between this vector and the specified 416 | * vector, respect to the plane whose perpendicular vector is the specified 417 | * normal vector. 418 | */ 419 | public double fullAngle(Vector3 o, Vector3 normal){ 420 | float dot = this.dot(o); 421 | float det = normal.mixed(this, o); 422 | double angle = Math.atan2(det, dot); 423 | return angle > 0 ? angle : angle + 2 * Math.PI; 424 | } 425 | 426 | /** 427 | * Returns this vector normalized, this means, with norm 1 428 | * @return the current vector normalized. 429 | */ 430 | public Vector3 normalize(){ 431 | float mod = (float) this.norm(); 432 | if (mod == 0) return Vector3.ORIGIN; 433 | return new Vector3(x / mod, y / mod, z / mod); 434 | } 435 | 436 | /** 437 | * Scales the current vector to get one with the same direction as the 438 | * current one, but with the specified norm. 439 | * @param norm the new norm of the vector. 440 | * @return a vector with the same direction as the current one, but 441 | * with the specified norm. 442 | */ 443 | public Vector3 withNorm(float norm) { 444 | return normalize().mul(norm); 445 | } 446 | 447 | /** 448 | * Scales the current vector to get one with the same direction as the 449 | * current one, but with the specified size factor. 450 | * @param factor the size factor of the norm. 451 | * @return a vector with the same direction as the current one, but 452 | * with its norm multiplied by the specified factor. 453 | */ 454 | public Vector3 scale(float factor) { 455 | return withNorm((float) this.norm() * factor); 456 | } 457 | 458 | /** 459 | * Rotates the current vector around de X axis of the canonical base. 460 | * @param angle the rotation angle, in radians. 461 | * @return the current vector rotated around the X axis, {@code angle} 462 | * radians. 463 | */ 464 | public Vector3 rotateX(float angle){ 465 | return rotate(AXIS_X, angle); 466 | } 467 | 468 | /** 469 | * Rotates the current vector around de Y axis of the canonical base. 470 | * @param angle the rotation angle, in radians. 471 | * @return the current vector rotated around the Y axis, {@code angle} 472 | * radians. 473 | */ 474 | public Vector3 rotateY(float angle){ 475 | return rotate(AXIS_Y, angle); 476 | } 477 | 478 | /** 479 | * Rotates the current vector around de Z axis of the canonical base. 480 | * @param angle the rotation angle, in radians. 481 | * @return the current vector rotated around the Z axis, {@code angle} 482 | * radians. 483 | */ 484 | public Vector3 rotateZ(float angle){ 485 | return rotate(AXIS_Z, angle); 486 | } 487 | 488 | /** 489 | * Rotates the current vector around an arbitrary axis, defined by the 490 | * parameter k. 491 | * @param k the rotation axis. 492 | * @param angle the rotation angle, in radians. 493 | * @return the current vector rotated around the {@code k} axis, 494 | * {@code angle} radians. 495 | */ 496 | public Vector3 rotate(Vector3 k, float angle){ 497 | if (k.normSquared() != 1){ 498 | k = k.normalize(); 499 | } 500 | 501 | float cos = (float) Math.cos(angle); 502 | float sin = (float) Math.sin(angle); 503 | 504 | Vector3 cross = k.cross(this); 505 | float kfactor = k.dot(this) * (1 - cos); 506 | 507 | return new Vector3( 508 | this.x * cos + cross.x * sin + k.x * kfactor, 509 | this.y * cos + cross.y * sin + k.y * kfactor, 510 | this.z * cos + cross.z * sin + k.z * kfactor 511 | ); 512 | } 513 | 514 | /** 515 | * Projects the current vector onto the specified one. 516 | * @param onto The vector. 517 | * @return The current vector, projected onto the specified vector. 518 | */ 519 | public Vector3 project(Vector3 onto) { 520 | return onto.mul(this.dot(onto) / (float) onto.normSquared()); 521 | } 522 | 523 | /** 524 | * Projects the current vector onto the surface whose ortogonal base is 525 | * defined by the specified vectors. 526 | * @param d1 The first vector of the surface base, ortogonal to {@code d2} 527 | * @param d2 The second vector of the surface base, ortogonal to {@code d1} 528 | * @return The current vector projected onto the surface defined by the 529 | * specified base. 530 | */ 531 | public Vector3 projectOntoSurface(Vector3 d1, Vector3 d2) { 532 | return this.project(d1).add(this.project(d2)); 533 | } 534 | 535 | /** 536 | * Returns the current vector, with the x component set to 0 537 | * @return the current vector with the x component set to 0 538 | */ 539 | public Vector3 stripX(){ 540 | return withX(0); 541 | } 542 | 543 | /** 544 | * Returns the current vector, with the y component set to 0 545 | * @return the current vector with the y component set to 0 546 | */ 547 | public Vector3 stripY(){ 548 | return withY(0); 549 | } 550 | 551 | /** 552 | * Returns the current vector, with the z component set to 0 553 | * @return the current vector with the z component set to 0 554 | */ 555 | public Vector3 stripZ(){ 556 | return withZ(0); 557 | } 558 | 559 | /** 560 | * Returns the current vector as a vector of the Bukkit API. 561 | * @return the current vector as a vector of Bukkit API. 562 | */ 563 | public Vector toVector(){ 564 | return new Vector(x, y, z); 565 | } 566 | 567 | /** 568 | * Returns the current vector as an array of components. 569 | * @return a float array of 3 items that contains the value of each 570 | * component x, y, z, respectively. 571 | */ 572 | public float[] toFloats(){ 573 | return new float[]{x, y, z}; 574 | } 575 | 576 | /** 577 | * Returns the current vector as a Location object, with the world set to 578 | * {@code null}, and pitch and yaw set to 0. 579 | * @return a Location object with the data of the current vector. 580 | */ 581 | public Location toLocation(){ 582 | return toLocation(null); 583 | } 584 | 585 | /** 586 | * Returns the current vector as a Location object, with the world set to 587 | * the specified one, and pitch and yaw set to 0. 588 | * 589 | * @param w The target world. 590 | * @return a Location object with the data of the current vector. 591 | */ 592 | public Location toLocation(World w){ 593 | return toLocation(w, 0.0f, 0.0f); 594 | } 595 | 596 | /** 597 | * Returns the current vector as a Location object, with the world, pitch 598 | * and yaw specified. 599 | * 600 | * @param w The target world. 601 | * @param pitch The pitch. 602 | * @param yaw The yaw. 603 | * @return a Location object with the data of the current vector. 604 | */ 605 | public Location toLocation(World w, float pitch, float yaw){ 606 | return new Location(w, x, y, z, yaw, pitch); 607 | } 608 | } 609 | -------------------------------------------------------------------------------- /library/src/main/java/com/devcexx/libtrails/suppliers/BitmapSupplier.java: -------------------------------------------------------------------------------- 1 | /* 2 | * This file is part of libtrails. 3 | * libtrails is free software: you can redistribute it and/or modify 4 | * it under the terms of the GNU General Public License as published by 5 | * the Free Software Foundation, either version 3 of the License, or 6 | * (at your option) any later version. 7 | * 8 | * libtrails is distributed in the hope that it will be useful, 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 | * GNU General Public License for more details. 12 | * 13 | * You should have received a copy of the GNU General Public License 14 | * along with libtrails. If not, see . 15 | */ 16 | 17 | package com.devcexx.libtrails.suppliers; 18 | 19 | import com.devcexx.libtrails.Particle; 20 | import com.devcexx.libtrails.ParticleSupplier; 21 | import com.devcexx.libtrails.SuppliedParticle; 22 | import com.devcexx.libtrails.Vector3; 23 | import org.bukkit.Effect; 24 | 25 | import java.awt.image.BufferedImage; 26 | import java.util.Arrays; 27 | import java.util.function.IntBinaryOperator; 28 | import java.util.stream.Stream; 29 | 30 | /** 31 | * Class that allows to represent compose an image made of coloreables 32 | * particles in Minecraft, from a bitmap. 33 | */ 34 | public class BitmapSupplier implements ParticleSupplier { 35 | public final SuppliedParticle[] particles; 36 | public final int allocatedPixels; 37 | public final int appearingInterval; 38 | 39 | /** 40 | * Creates a new bitmap supplier. 41 | * @param particleType the type of the particle that will be spawned. MUST 42 | * BE a coloreable particle, (COLORED_DUST or SPELL). 43 | * @param appearingInterval the time, in Minecraft ticks, that must elapse 44 | * between each image. 45 | * @param visibilityRadius the visible radius of the particles. Anyone 46 | * in the same world as the particles, and nearer 47 | * than this value will be able to see them. 48 | * @param image an instance of {@link BufferedImage} that contains the 49 | * imagen that will be rendered. 50 | * @param w the width, in Minecraft Blocks of the rendered image. 51 | * @param h the height, in Minecraft Blocks of the rendered image. 52 | * @param horizontalResolution the number of horizontal particles per 53 | * block that will compose the rendered image. 54 | * @param verticalResolution the number of vertical particles per 55 | * block that will compose the rendered image. 56 | */ 57 | public BitmapSupplier(Effect particleType, int appearingInterval, 58 | int visibilityRadius, BufferedImage image, float w, 59 | float h, float horizontalResolution, 60 | float verticalResolution) { 61 | 62 | this(particleType, appearingInterval, visibilityRadius, image::getRGB, 63 | image.getWidth(), image.getHeight(), w, h, horizontalResolution, 64 | verticalResolution); 65 | } 66 | 67 | /** 68 | * Creates a new bitmap supplier. 69 | * @param particleType the type of the particle that will be spawned. MUST 70 | * BE a coloreable particle, (COLORED_DUST or SPELL). 71 | * @param appearingInterval the time, in Minecraft ticks, that must elapse 72 | * between each image. 73 | * @param visibilityRadius the visible radius of the particles. Anyone 74 | * in the same world as the particles, and nearer 75 | * than this value will be able to see them. 76 | * @param provider a {@link IntBinaryOperator} that is the origin of the 77 | * data of the bitmap. It must take two parameters: x and y, 78 | * respectively. The result of this function must the color 79 | * of the pixel located at (x, y), in ARGB format, with 80 | * 8 bits per channel.
81 | * [AAAAAAAA|RRRRRRRR|GGGGGGGG|BBBBBBBB] 82 | * @param originw the width of the source image. 83 | * @param originh the height of the source image. 84 | * @param w the width, in Minecraft Blocks of the rendered image. 85 | * @param h the height, in Minecraft Blocks of the rendered image. 86 | * @param horizontalResolution the number of horizontal particles per 87 | * block that will compose the rendered image. 88 | * @param verticalResolution the number of vertical particles per 89 | * block that will compose the rendered image. 90 | */ 91 | public BitmapSupplier(Effect particleType, int appearingInterval, 92 | int visibilityRadius, IntBinaryOperator provider, 93 | int originw, int originh, float w, float h, 94 | float horizontalResolution, 95 | float verticalResolution) { 96 | 97 | if (particleType != Effect.COLOURED_DUST 98 | && particleType != Effect.SPELL) 99 | throw new IllegalArgumentException("The specified effect " + 100 | "cannot have RGB colors"); 101 | 102 | this.appearingInterval = appearingInterval; 103 | 104 | int finalw = (int) (w * horizontalResolution); 105 | int finalh = (int) (h * verticalResolution); 106 | 107 | particles = new SuppliedParticle[finalh * finalw]; 108 | 109 | double xdist = 1.0 / horizontalResolution; 110 | double zdist = 1.0 / verticalResolution; 111 | 112 | float midw = w / 2; 113 | float midh = h / 2; 114 | 115 | double xScale = originw/(double)finalw; 116 | double yScale = originh/(double)finalh; 117 | int px, py; 118 | 119 | int index = 0; 120 | 121 | //Nearest neighbor image scaling 122 | for (int i = 0; i < finalh; i++) { 123 | for (int j = 0; j < finalw; j++) { 124 | 125 | px = (int) Math.floor(j*xScale); 126 | py = (int) Math.floor(i*yScale); 127 | int argb = provider.applyAsInt(px, py); 128 | 129 | if (((argb >> 24) & 0xFF) >= 127) { 130 | 131 | //Math.max(0.001f...): if speed is 0.0f, Minecraft draws it 132 | //with a red color. This code avoids it. 133 | float r = Math.max(0.001f, ((argb >> 16) & 0xFF) / 256.0f); 134 | float g = Math.max(0.001f, ((argb >> 8) & 0xFF) / 256.0f); 135 | float b = Math.max(0.001f, (argb & 0xFF) / 256.0f); 136 | 137 | particles[index++] = new SuppliedParticle( 138 | Particle.builder() 139 | .effect(particleType) 140 | .radius(visibilityRadius) 141 | .count(0) 142 | .offsetX(r) 143 | .offsetY(g) 144 | .offsetZ(b) 145 | .speed(1.0f).build(), 146 | new Vector3(j * xdist - midw, 0, midh - (i * zdist)) 147 | ); 148 | } 149 | } 150 | } 151 | this.allocatedPixels = index; 152 | } 153 | 154 | @Override 155 | public Stream supply(int tick) { 156 | if (tick % appearingInterval == 0) { 157 | return Arrays.stream(particles, 0, allocatedPixels); 158 | } else { 159 | return Stream.of(); 160 | } 161 | } 162 | 163 | } 164 | -------------------------------------------------------------------------------- /library/src/main/java/com/devcexx/libtrails/suppliers/CircumferenceSupplier.java: -------------------------------------------------------------------------------- 1 | /* 2 | * This file is part of libtrails. 3 | * libtrails is free software: you can redistribute it and/or modify 4 | * it under the terms of the GNU General Public License as published by 5 | * the Free Software Foundation, either version 3 of the License, or 6 | * (at your option) any later version. 7 | * 8 | * libtrails is distributed in the hope that it will be useful, 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 | * GNU General Public License for more details. 12 | * 13 | * You should have received a copy of the GNU General Public License 14 | * along with libtrails. If not, see . 15 | */ 16 | 17 | package com.devcexx.libtrails.suppliers; 18 | 19 | import com.devcexx.libtrails.Particle; 20 | import com.devcexx.libtrails.ParticleSupplier; 21 | import com.devcexx.libtrails.SuppliedParticle; 22 | import com.devcexx.libtrails.Vector3; 23 | 24 | import java.util.Arrays; 25 | import java.util.stream.Stream; 26 | 27 | /** 28 | * Class that provides a circumference trail. 29 | */ 30 | public class CircumferenceSupplier implements ParticleSupplier { 31 | public final SuppliedParticle[] particles; 32 | public final int appearingInterval; 33 | 34 | /** 35 | * Creates a new trail with the specified parameters. 36 | * @param particle the particle of the circumference. 37 | * @param radius the radius of the circumference. 38 | * @param delta the variation of the angle between each point, in radians. 39 | * @param offset the start angle. 40 | * @param appearingInterval the time, in Minecraft ticks, that must elapse 41 | * between each drawing. 42 | */ 43 | public CircumferenceSupplier(Particle particle, 44 | float radius, float delta, float offset, 45 | int appearingInterval) { 46 | this.appearingInterval = appearingInterval; 47 | 48 | int n = (int) Math.round(2 * Math.PI / delta); 49 | particles = new SuppliedParticle[n]; 50 | for (int i = 0; i < n; i++) { 51 | float angle = offset + delta * i; 52 | particles[i] = new SuppliedParticle(particle, new Vector3( 53 | Math.cos(angle), 54 | 0, 55 | Math.sin(angle) 56 | ).mul(radius)); 57 | } 58 | } 59 | 60 | @Override 61 | public Stream supply(int tick) { 62 | if (tick % appearingInterval == 0) { 63 | return Arrays.stream(particles); 64 | } else { 65 | return Stream.of(); 66 | } 67 | } 68 | } 69 | -------------------------------------------------------------------------------- /library/src/main/java/com/devcexx/libtrails/suppliers/EpitrochoidSupplier.java: -------------------------------------------------------------------------------- 1 | /* 2 | * This file is part of libtrails. 3 | * libtrails is free software: you can redistribute it and/or modify 4 | * it under the terms of the GNU General Public License as published by 5 | * the Free Software Foundation, either version 3 of the License, or 6 | * (at your option) any later version. 7 | * 8 | * libtrails is distributed in the hope that it will be useful, 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 | * GNU General Public License for more details. 12 | * 13 | * You should have received a copy of the GNU General Public License 14 | * along with libtrails. If not, see . 15 | */ 16 | 17 | package com.devcexx.libtrails.suppliers; 18 | 19 | import com.devcexx.libtrails.*; 20 | 21 | /** 22 | * Class that provides an Epitrochoid trail. 23 | */ 24 | public class EpitrochoidSupplier extends SpirographSupplier { 25 | 26 | /** 27 | * Builds a new epitrochoid trail. 28 | * @param particle The particle that will be spawned. 29 | * @param delta The variation of the angle per drawn point. 30 | * @param directorRadius The radius of the fixed circumference. 31 | * @param rollingRadius The radius of the rolling circumference. 32 | * @param hdist The distance between the center of the rolling center to 33 | * the point that will be used to draw the curve. 34 | * @param appearingInterval the time, in Minecraft ticks, that must elapse 35 | * between each drawing. 36 | */ 37 | public EpitrochoidSupplier(Particle particle, float delta, 38 | float directorRadius, float rollingRadius, 39 | float hdist, int appearingInterval) { 40 | super(particle, delta, directorRadius, rollingRadius, hdist, 41 | appearingInterval); 42 | } 43 | 44 | @Override 45 | protected Vector3 fetchVector(float R, float r, float h, float theta) { 46 | return new Vector3( 47 | (R + r) * Math.cos(theta) - h * Math.cos(theta * (R + r) / r), 48 | 0, 49 | (R + r) * Math.sin(theta) - h * Math.sin(theta * (R + r) / r) 50 | ); 51 | } 52 | } 53 | -------------------------------------------------------------------------------- /library/src/main/java/com/devcexx/libtrails/suppliers/HelixSupplier.java: -------------------------------------------------------------------------------- 1 | /* 2 | * This file is part of libtrails. 3 | * libtrails is free software: you can redistribute it and/or modify 4 | * it under the terms of the GNU General Public License as published by 5 | * the Free Software Foundation, either version 3 of the License, or 6 | * (at your option) any later version. 7 | * 8 | * libtrails is distributed in the hope that it will be useful, 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 | * GNU General Public License for more details. 12 | * 13 | * You should have received a copy of the GNU General Public License 14 | * along with libtrails. If not, see . 15 | */ 16 | 17 | package com.devcexx.libtrails.suppliers; 18 | 19 | import com.devcexx.libtrails.Particle; 20 | import com.devcexx.libtrails.SuppliedParticle; 21 | 22 | import java.util.stream.Stream; 23 | 24 | /** 25 | * Class that provides an helix trail. 26 | */ 27 | public class HelixSupplier extends CircumferenceSupplier { 28 | 29 | /** 30 | * Creates a new trail with the specified parameters. 31 | * @param particle the particle of the helix. 32 | * @param radius the radius of the circumference that defines the helix. 33 | * @param delta the variation of the angle between each point, in radians. 34 | * @param offset the start angle. 35 | */ 36 | public HelixSupplier(Particle particle, float radius, float delta, float offset) { 37 | super(particle, radius, delta, offset, 0); 38 | } 39 | 40 | @Override 41 | public Stream supply(int tick) { 42 | return Stream.of(particles[tick % particles.length]); 43 | } 44 | } 45 | -------------------------------------------------------------------------------- /library/src/main/java/com/devcexx/libtrails/suppliers/HypotrochoidSupplier.java: -------------------------------------------------------------------------------- 1 | /* 2 | * This file is part of libtrails. 3 | * libtrails is free software: you can redistribute it and/or modify 4 | * it under the terms of the GNU General Public License as published by 5 | * the Free Software Foundation, either version 3 of the License, or 6 | * (at your option) any later version. 7 | * 8 | * libtrails is distributed in the hope that it will be useful, 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 | * GNU General Public License for more details. 12 | * 13 | * You should have received a copy of the GNU General Public License 14 | * along with libtrails. If not, see . 15 | */ 16 | 17 | package com.devcexx.libtrails.suppliers; 18 | 19 | import com.devcexx.libtrails.Particle; 20 | import com.devcexx.libtrails.Vector3; 21 | 22 | /** 23 | * Class that provides an Hypotrochoid trail. 24 | */ 25 | public class HypotrochoidSupplier extends SpirographSupplier { 26 | 27 | /** 28 | * Builds a new epitrochoid trail. 29 | * @param particle The particle that will be spawned. 30 | * @param delta The variation of the angle per drawn point. 31 | * @param directorRadius The radius of the fixed circumference. 32 | * @param rollingRadius The radius of the rolling circumference. 33 | * @param hdist The distance between the center of the rolling center to 34 | * the point that will be used to draw the curve. 35 | * @param appearingInterval the time, in Minecraft ticks, that must elapse 36 | * between each drawing. 37 | */ 38 | public HypotrochoidSupplier(Particle particle, float delta, 39 | float directorRadius, float rollingRadius, 40 | float hdist, int appearingInterval) { 41 | super(particle, delta, directorRadius, rollingRadius, hdist, 42 | appearingInterval); 43 | } 44 | 45 | @Override 46 | protected Vector3 fetchVector(float R, float r, float h, float theta) { 47 | return new Vector3( 48 | (R - r) * Math.cos(theta) + h * Math.cos(theta * (R - r) / r), 49 | 0, 50 | (R - r) * Math.sin(theta) - h * Math.sin(theta * (R - r) / r) 51 | ); 52 | } 53 | } 54 | -------------------------------------------------------------------------------- /library/src/main/java/com/devcexx/libtrails/suppliers/LinearSupplier.java: -------------------------------------------------------------------------------- 1 | /* 2 | * This file is part of libtrails. 3 | * libtrails is free software: you can redistribute it and/or modify 4 | * it under the terms of the GNU General Public License as published by 5 | * the Free Software Foundation, either version 3 of the License, or 6 | * (at your option) any later version. 7 | * 8 | * libtrails is distributed in the hope that it will be useful, 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 | * GNU General Public License for more details. 12 | * 13 | * You should have received a copy of the GNU General Public License 14 | * along with libtrails. If not, see . 15 | */ 16 | 17 | package com.devcexx.libtrails.suppliers; 18 | 19 | import com.devcexx.libtrails.Particle; 20 | import com.devcexx.libtrails.ParticleSupplier; 21 | import com.devcexx.libtrails.SuppliedParticle; 22 | import com.devcexx.libtrails.Vector3; 23 | 24 | import java.util.stream.Stream; 25 | 26 | /** 27 | * Represents a basic linear trail. 28 | */ 29 | public class LinearSupplier implements ParticleSupplier { 30 | 31 | private SuppliedParticle particle; 32 | 33 | /** 34 | * Builds a new linear trail. 35 | * @param particle The particle of the trail. 36 | */ 37 | public LinearSupplier(Particle particle) { 38 | this(particle, Vector3.ORIGIN); 39 | } 40 | 41 | /** 42 | * Builds a new linear trail. 43 | * @param particle The particle of the trail. 44 | * @param offset The offset of the particle from the origin. 45 | */ 46 | public LinearSupplier(Particle particle, Vector3 offset) { 47 | this.particle = new SuppliedParticle(particle, offset); 48 | } 49 | 50 | @Override 51 | public Stream supply(int tick) { 52 | return Stream.of(this.particle); 53 | } 54 | } 55 | -------------------------------------------------------------------------------- /library/src/main/java/com/devcexx/libtrails/suppliers/PolySupplier.java: -------------------------------------------------------------------------------- 1 | /* 2 | * This file is part of libtrails. 3 | * libtrails is free software: you can redistribute it and/or modify 4 | * it under the terms of the GNU General Public License as published by 5 | * the Free Software Foundation, either version 3 of the License, or 6 | * (at your option) any later version. 7 | * 8 | * libtrails is distributed in the hope that it will be useful, 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 | * GNU General Public License for more details. 12 | * 13 | * You should have received a copy of the GNU General Public License 14 | * along with libtrails. If not, see . 15 | */ 16 | 17 | package com.devcexx.libtrails.suppliers; 18 | 19 | import com.devcexx.libtrails.Particle; 20 | import com.devcexx.libtrails.ParticleSupplier; 21 | import com.devcexx.libtrails.SuppliedParticle; 22 | import com.devcexx.libtrails.TrailUtil; 23 | import com.devcexx.libtrails.Vector3; 24 | 25 | import java.util.Arrays; 26 | import java.util.stream.Stream; 27 | 28 | /** 29 | * Class that allows to render a trail composed by shapes with equidistants 30 | * vertex placed in a circumference. This points are connected with lines, 31 | * and a specified jump between vertex. This allow to create regular common 32 | * 2D polygons (when jump = 0) or complex handy-like star drawings. 33 | */ 34 | public class PolySupplier implements ParticleSupplier { 35 | public final SuppliedParticle[] particles; 36 | public final int appearingInterval; 37 | 38 | /** 39 | * Creates a new instance of the supplier. 40 | * @param particle Creates a new trail with the specified parameters. 41 | * @param appearingInterval The time, in Minecraft ticks, that must elapse 42 | * between each drawing. 43 | * @param vertex The number of vertex of the shape. 44 | * @param jumps The number of vertex that will be skipped each time when 45 | * connecting them with lines. 46 | * @param radius The radius of the circumference that circumscribes the 47 | * shape. 48 | * @param step The distance, in Minecraft blocks, between each point 49 | * of the lines of the shape. 50 | * @param angleOffset The angle of the first vertex. 51 | */ 52 | public PolySupplier(Particle particle, int appearingInterval, int vertex, 53 | int jumps, float radius, float step, 54 | float angleOffset) { 55 | this.appearingInterval = appearingInterval; 56 | 57 | float fullAngle = (2 * (float) Math.PI / vertex) * (jumps + 1); 58 | double linesLength = new Vector3(radius, 0, 0) 59 | .sub( 60 | radius * (float) Math.cos(fullAngle), 61 | radius * (float) Math.sin(fullAngle), 0 62 | ).norm(); 63 | 64 | int n = (int) Math.round(linesLength / step); 65 | 66 | // k * (j + 1) ≡ 0 (mod n) <=> k ≡ 0 (mod n / mcd(n, j + 1)), where 67 | // k ≡ line count; n ≡ vertex count; j ≡ jumps between vertex. 68 | int lineCount = vertex / TrailUtil.gcd(vertex, jumps + 1); 69 | 70 | particles = new SuppliedParticle[lineCount * n]; 71 | 72 | for (int i = 0; i < lineCount; i++) { 73 | float originAngle = angleOffset + i * fullAngle; 74 | float targetAngle = originAngle + fullAngle; 75 | 76 | Vector3 ptFrom = new Vector3(radius * Math.cos(originAngle), 0, 77 | radius * Math.sin(originAngle)); 78 | Vector3 ptTo = new Vector3(radius * Math.cos(targetAngle), 0, 79 | radius * Math.sin(targetAngle)); 80 | 81 | TrailUtil.fillWithLine(particles, particle, i * n, 82 | ptFrom, ptTo.sub(ptFrom).normalize(), step, n); 83 | } 84 | } 85 | 86 | @Override 87 | public Stream supply(int tick) { 88 | if (tick % appearingInterval == 0) { 89 | return Arrays.stream(particles); 90 | } else { 91 | return Stream.of(); 92 | } 93 | } 94 | } 95 | -------------------------------------------------------------------------------- /library/src/main/java/com/devcexx/libtrails/suppliers/ScatteringSupplier.java: -------------------------------------------------------------------------------- 1 | /* 2 | * This file is part of libtrails. 3 | * libtrails is free software: you can redistribute it and/or modify 4 | * it under the terms of the GNU General Public License as published by 5 | * the Free Software Foundation, either version 3 of the License, or 6 | * (at your option) any later version. 7 | * 8 | * libtrails is distributed in the hope that it will be useful, 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 | * GNU General Public License for more details. 12 | * 13 | * You should have received a copy of the GNU General Public License 14 | * along with libtrails. If not, see . 15 | */ 16 | 17 | package com.devcexx.libtrails.suppliers; 18 | 19 | import com.devcexx.libtrails.Particle; 20 | import com.devcexx.libtrails.ParticleSupplier; 21 | import com.devcexx.libtrails.SuppliedParticle; 22 | import com.devcexx.libtrails.Vector3; 23 | 24 | import java.util.Arrays; 25 | import java.util.Random; 26 | import java.util.stream.Stream; 27 | 28 | /** 29 | * Class that provides a trail that spreads particles randomly into 30 | * a defined space. 31 | */ 32 | public class ScatteringSupplier implements ParticleSupplier{ 33 | 34 | private final Random random = new Random(); 35 | public final Particle[] particles; 36 | public final Vector3 spreadSpace; 37 | public final Vector3 spreadSpaceOffset; 38 | public final int minParticles; 39 | public final int maxParticles; 40 | public final int appearingInteval; 41 | 42 | /** 43 | * Creates a new trail with the specified parameters. 44 | * @param particles the possible kind of particles that could be spawned 45 | * in the trail. 46 | * @param spreadSpace the space where the particles can be spawned. 47 | * @param spreadSpaceOffset the offset of the spread space from the center. 48 | * @param minParticles the minimum count of particles that must be spawned 49 | * in each step. 50 | * @param maxParticles the maximum number of particles that could be spawned 51 | * in each step. 52 | * @param appearingInterval the time between each spawning, in Minecraft 53 | * ticks. 54 | */ 55 | public ScatteringSupplier(Particle[] particles, Vector3 spreadSpace, 56 | Vector3 spreadSpaceOffset, int minParticles, 57 | int maxParticles, int appearingInterval) { 58 | this.particles = particles; 59 | 60 | //Half the size of the space, to consider the positive and negative 61 | //coordinates. 62 | this.spreadSpace = spreadSpace.mul(0.5f); 63 | this.spreadSpaceOffset = spreadSpaceOffset; 64 | this.minParticles = minParticles; 65 | this.maxParticles = maxParticles; 66 | this.appearingInteval = appearingInterval; 67 | } 68 | 69 | 70 | @Override 71 | public Stream supply(int tick) { 72 | if (tick % appearingInteval == 0) { 73 | int n = random.nextInt(maxParticles - minParticles) + minParticles + 1; 74 | SuppliedParticle[] res = new SuppliedParticle[n]; 75 | 76 | for (int i = 0; i < n; i++) { 77 | res[i] = new SuppliedParticle( 78 | particles[random.nextInt(particles.length)], 79 | spreadSpaceOffset.add( 80 | spreadSpace.mul( 81 | (float) random.nextGaussian(), 82 | (float) random.nextGaussian(), 83 | (float) random.nextGaussian() 84 | ))); 85 | } 86 | return Arrays.stream(res); 87 | } else { 88 | return Stream.of(); 89 | } 90 | } 91 | } 92 | -------------------------------------------------------------------------------- /library/src/main/java/com/devcexx/libtrails/suppliers/SinusoidalSupplier.java: -------------------------------------------------------------------------------- 1 | /* 2 | * This file is part of libtrails. 3 | * libtrails is free software: you can redistribute it and/or modify 4 | * it under the terms of the GNU General Public License as published by 5 | * the Free Software Foundation, either version 3 of the License, or 6 | * (at your option) any later version. 7 | * 8 | * libtrails is distributed in the hope that it will be useful, 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 | * GNU General Public License for more details. 12 | * 13 | * You should have received a copy of the GNU General Public License 14 | * along with libtrails. If not, see . 15 | */ 16 | 17 | package com.devcexx.libtrails.suppliers; 18 | 19 | import com.devcexx.libtrails.Particle; 20 | import com.devcexx.libtrails.ParticleSupplier; 21 | import com.devcexx.libtrails.SuppliedParticle; 22 | import com.devcexx.libtrails.Vector3; 23 | 24 | import java.util.stream.Stream; 25 | 26 | /** 27 | * Class that provides a circumference trail. 28 | */ 29 | public class SinusoidalSupplier implements ParticleSupplier { 30 | private final SuppliedParticle[] particles; 31 | 32 | /** 33 | * Creates a new trail with the specified parameters. 34 | * @param particle the particle of the sinusoidal wave. 35 | * @param radius the radius of the sinusoidal wave (amplitude). 36 | * @param delta the angle between each point of the wave, in radians. 37 | * @param offset the start angle, in radians. 38 | * @param rotation the rotation angle of the wave around the Y axis, 39 | * in radians. 40 | */ 41 | public SinusoidalSupplier(Particle particle, float radius, float delta, 42 | float offset, float rotation) { 43 | int n = (int) (2 * Math.PI / delta); 44 | particles = new SuppliedParticle[n]; 45 | for (int i = 0; i < n; i++) { 46 | float angle = offset + delta * i; 47 | particles[i] = new SuppliedParticle(particle, new Vector3( 48 | 0, 49 | 0, 50 | Math.sin(angle) 51 | ).mul(radius).rotateY(rotation)); 52 | } 53 | } 54 | 55 | @Override 56 | public Stream supply(int tick) { 57 | return Stream.of(particles[tick % particles.length]); 58 | } 59 | } 60 | -------------------------------------------------------------------------------- /library/src/main/java/com/devcexx/libtrails/suppliers/SpirographSupplier.java: -------------------------------------------------------------------------------- 1 | /* 2 | * This file is part of libtrails. 3 | * libtrails is free software: you can redistribute it and/or modify 4 | * it under the terms of the GNU General Public License as published by 5 | * the Free Software Foundation, either version 3 of the License, or 6 | * (at your option) any later version. 7 | * 8 | * libtrails is distributed in the hope that it will be useful, 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 | * GNU General Public License for more details. 12 | * 13 | * You should have received a copy of the GNU General Public License 14 | * along with libtrails. If not, see . 15 | */ 16 | 17 | package com.devcexx.libtrails.suppliers; 18 | 19 | import com.devcexx.libtrails.*; 20 | 21 | import java.util.Arrays; 22 | import java.util.stream.Stream; 23 | 24 | /** 25 | * Represents a trail defined by a curve that can be generated by a 26 | * Spirograph. 27 | */ 28 | public abstract class SpirographSupplier implements ParticleSupplier { 29 | public final SuppliedParticle[] particles; 30 | public final int appearingInterval; 31 | 32 | /** 33 | * Builds a new epitrochoid trail. 34 | * @param particle The particle that will be spawned. 35 | * @param delta The variation of the angle per drawn point. 36 | * @param directorRadius The radius of the fixed circumference. 37 | * @param rollingRadius The radius of the rolling circumference. 38 | * @param hdist The distance between the center of the rolling center to 39 | * the point that will be used to draw the curve. 40 | * @param appearingInterval the time, in Minecraft ticks, that must elapse 41 | * between each drawing. 42 | */ 43 | public SpirographSupplier(Particle particle, float delta, 44 | float directorRadius, float rollingRadius, 45 | float hdist, int appearingInterval) { 46 | this.appearingInterval = appearingInterval; 47 | 48 | //two decimal precision 49 | directorRadius = (float) (Math.floor(directorRadius * 100.0f) / 100.0f); 50 | rollingRadius = (float) (Math.floor(rollingRadius * 100.0f) / 100.0f); 51 | 52 | int period = (int) Math.ceil(directorRadius / 53 | (TrailUtil.gcd((int) (directorRadius * 100), 54 | (int) (rollingRadius * 100)) / 100.0f)); 55 | 56 | double finalAngle = period * (rollingRadius / directorRadius) * 2 * Math.PI; 57 | int steps = (int) Math.round(finalAngle / delta); 58 | particles = new SuppliedParticle[steps]; 59 | 60 | for (int i = 0; i < steps; i++) { 61 | particles[i] = new SuppliedParticle(particle, 62 | fetchVector(directorRadius, rollingRadius, hdist, i * delta)); 63 | } 64 | } 65 | 66 | @Override 67 | public Stream supply(int tick) { 68 | if (tick % appearingInterval == 0) 69 | return Arrays.stream(particles); 70 | else 71 | return Stream.of(); 72 | } 73 | 74 | protected abstract Vector3 fetchVector(float R, float r, float h, float theta); 75 | } 76 | -------------------------------------------------------------------------------- /library/src/main/java/com/devcexx/libtrails/suppliers/StarSupplier.java: -------------------------------------------------------------------------------- 1 | /* 2 | * This file is part of libtrails. 3 | * libtrails is free software: you can redistribute it and/or modify 4 | * it under the terms of the GNU General Public License as published by 5 | * the Free Software Foundation, either version 3 of the License, or 6 | * (at your option) any later version. 7 | * 8 | * libtrails is distributed in the hope that it will be useful, 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 | * GNU General Public License for more details. 12 | * 13 | * You should have received a copy of the GNU General Public License 14 | * along with libtrails. If not, see . 15 | */ 16 | 17 | package com.devcexx.libtrails.suppliers; 18 | 19 | import com.devcexx.libtrails.Particle; 20 | import com.devcexx.libtrails.ParticleSupplier; 21 | import com.devcexx.libtrails.SuppliedParticle; 22 | import com.devcexx.libtrails.TrailUtil; 23 | import com.devcexx.libtrails.Vector3; 24 | 25 | import java.util.Arrays; 26 | import java.util.stream.Stream; 27 | 28 | /** 29 | * Class that provides a star trail. 30 | */ 31 | public class StarSupplier implements ParticleSupplier { 32 | public final SuppliedParticle[] particles; 33 | public final int appearingInterval; 34 | 35 | /** 36 | * Creates a new instance of this class. 37 | * @param particle The particle used to render the star. 38 | * @param appearingInterval the time, in Minecraft ticks, that must elapse 39 | * between each star. 40 | * @param vertex The number of vertex of the star. 41 | * @param step The distance, in Minecraft blocks, between each point 42 | * of the lines of the star. 43 | * @param highRadius The radius of the outer circumference that delimites 44 | * the star. 45 | * @param lowRadius The radius of the inner circumference that delimites 46 | * the minimum size of the star. 47 | * @param angleStartOffset The offset of the initial angle. 48 | */ 49 | public StarSupplier(Particle particle, int appearingInterval, 50 | int vertex, float step, float highRadius, 51 | float lowRadius, float angleStartOffset) { 52 | this.appearingInterval = appearingInterval; 53 | 54 | float fullAngle = (float) (2 * Math.PI / vertex); 55 | float midAngle = fullAngle / 2.0f; 56 | double linesLength = new Vector3(highRadius, 0, 0) 57 | .sub( 58 | lowRadius * (float) Math.cos(midAngle), 59 | lowRadius * (float) Math.sin(midAngle), 0 60 | ).norm(); 61 | 62 | int pointsPerLine = (int) Math.round(linesLength / step); 63 | particles = new SuppliedParticle[2 * pointsPerLine * vertex]; 64 | int index = 0; 65 | 66 | for (int i = 0; i < vertex; i++) { 67 | double highAngle = angleStartOffset + fullAngle * i; 68 | double lowAngle = highAngle + midAngle; 69 | double nextHighAngle = highAngle + fullAngle; 70 | 71 | Vector3 ptFrom = new Vector3(highRadius * Math.cos(highAngle), 0, 72 | highRadius * Math.sin(highAngle)); 73 | Vector3 ptTo = new Vector3(lowRadius * Math.cos(lowAngle), 0, 74 | lowRadius * Math.sin(lowAngle)); 75 | 76 | TrailUtil.fillWithLine(particles, particle, index, 77 | ptFrom, ptTo.sub(ptFrom).normalize(), step, pointsPerLine); 78 | index += pointsPerLine; 79 | 80 | ptFrom = ptTo; 81 | ptTo = new Vector3(highRadius * Math.cos(nextHighAngle), 0, 82 | highRadius * Math.sin(nextHighAngle)); 83 | 84 | TrailUtil.fillWithLine(particles, particle, index, 85 | ptFrom, ptTo.sub(ptFrom).normalize(), step, pointsPerLine); 86 | index += pointsPerLine; 87 | } 88 | } 89 | 90 | @Override 91 | public Stream supply(int tick) { 92 | if (tick % appearingInterval == 0) { 93 | return Arrays.stream(particles); 94 | } else { 95 | return Stream.of(); 96 | } 97 | } 98 | } 99 | -------------------------------------------------------------------------------- /pom.xml: -------------------------------------------------------------------------------- 1 | 2 | 5 | 4.0.0 6 | 7 | com.devcexx 8 | libtrails-parent 9 | 1.0-SNAPSHOT 10 | pom 11 | 12 | 13 | 14 | build-library 15 | 16 | library 17 | 18 | 19 | 20 | 21 | build-examples 22 | 23 | examples 24 | 25 | 26 | 27 | 28 | 29 | 30 | spigot-repo 31 | https://hub.spigotmc.org/nexus/content/repositories/snapshots/ 32 | 33 | 34 | 35 | 36 | 37 | org.spigotmc 38 | spigot-api 39 | 1.11.2-R0.1-SNAPSHOT 40 | provided 41 | 42 | 43 | org.projectlombok 44 | lombok 45 | 1.18.20 46 | provided 47 | 48 | 49 | 50 | 51 | 52 | 53 | 54 | org.apache.maven.plugins 55 | maven-compiler-plugin 56 | 3.5.1 57 | 58 | 59 | 1.8 60 | 1.8 61 | 62 | 63 | 64 | 65 | 66 | --------------------------------------------------------------------------------