While this class is neither feature-rich nor the most performant one, it's sufficient enough 666 | * for its use-case. 667 | */ 668 | public static class JsonObjectBuilder { 669 | 670 | private StringBuilder builder = new StringBuilder(); 671 | 672 | private boolean hasAtLeastOneField = false; 673 | 674 | public JsonObjectBuilder() { 675 | builder.append("{"); 676 | } 677 | 678 | /** 679 | * Appends a null field to the JSON. 680 | * 681 | * @param key The key of the field. 682 | * @return A reference to this object. 683 | */ 684 | public JsonObjectBuilder appendNull(String key) { 685 | appendFieldUnescaped(key, "null"); 686 | return this; 687 | } 688 | 689 | /** 690 | * Appends a string field to the JSON. 691 | * 692 | * @param key The key of the field. 693 | * @param value The value of the field. 694 | * @return A reference to this object. 695 | */ 696 | public JsonObjectBuilder appendField(String key, String value) { 697 | if (value == null) { 698 | throw new IllegalArgumentException("JSON value must not be null"); 699 | } 700 | appendFieldUnescaped(key, "\"" + escape(value) + "\""); 701 | return this; 702 | } 703 | 704 | /** 705 | * Appends an integer field to the JSON. 706 | * 707 | * @param key The key of the field. 708 | * @param value The value of the field. 709 | * @return A reference to this object. 710 | */ 711 | public JsonObjectBuilder appendField(String key, int value) { 712 | appendFieldUnescaped(key, String.valueOf(value)); 713 | return this; 714 | } 715 | 716 | /** 717 | * Appends an object to the JSON. 718 | * 719 | * @param key The key of the field. 720 | * @param object The object. 721 | * @return A reference to this object. 722 | */ 723 | public JsonObjectBuilder appendField(String key, JsonObject object) { 724 | if (object == null) { 725 | throw new IllegalArgumentException("JSON object must not be null"); 726 | } 727 | appendFieldUnescaped(key, object.toString()); 728 | return this; 729 | } 730 | 731 | /** 732 | * Appends a string array to the JSON. 733 | * 734 | * @param key The key of the field. 735 | * @param values The string array. 736 | * @return A reference to this object. 737 | */ 738 | public JsonObjectBuilder appendField(String key, String[] values) { 739 | if (values == null) { 740 | throw new IllegalArgumentException("JSON values must not be null"); 741 | } 742 | String escapedValues = 743 | Arrays.stream(values) 744 | .map(value -> "\"" + escape(value) + "\"") 745 | .collect(Collectors.joining(",")); 746 | appendFieldUnescaped(key, "[" + escapedValues + "]"); 747 | return this; 748 | } 749 | 750 | /** 751 | * Appends an integer array to the JSON. 752 | * 753 | * @param key The key of the field. 754 | * @param values The integer array. 755 | * @return A reference to this object. 756 | */ 757 | public JsonObjectBuilder appendField(String key, int[] values) { 758 | if (values == null) { 759 | throw new IllegalArgumentException("JSON values must not be null"); 760 | } 761 | String escapedValues = 762 | Arrays.stream(values).mapToObj(String::valueOf).collect(Collectors.joining(",")); 763 | appendFieldUnescaped(key, "[" + escapedValues + "]"); 764 | return this; 765 | } 766 | 767 | /** 768 | * Appends an object array to the JSON. 769 | * 770 | * @param key The key of the field. 771 | * @param values The integer array. 772 | * @return A reference to this object. 773 | */ 774 | public JsonObjectBuilder appendField(String key, JsonObject[] values) { 775 | if (values == null) { 776 | throw new IllegalArgumentException("JSON values must not be null"); 777 | } 778 | String escapedValues = 779 | Arrays.stream(values).map(JsonObject::toString).collect(Collectors.joining(",")); 780 | appendFieldUnescaped(key, "[" + escapedValues + "]"); 781 | return this; 782 | } 783 | 784 | /** 785 | * Appends a field to the object. 786 | * 787 | * @param key The key of the field. 788 | * @param escapedValue The escaped value of the field. 789 | */ 790 | private void appendFieldUnescaped(String key, String escapedValue) { 791 | if (builder == null) { 792 | throw new IllegalStateException("JSON has already been built"); 793 | } 794 | if (key == null) { 795 | throw new IllegalArgumentException("JSON key must not be null"); 796 | } 797 | if (hasAtLeastOneField) { 798 | builder.append(","); 799 | } 800 | builder.append("\"").append(escape(key)).append("\":").append(escapedValue); 801 | hasAtLeastOneField = true; 802 | } 803 | 804 | /** 805 | * Builds the JSON string and invalidates this builder. 806 | * 807 | * @return The built JSON string. 808 | */ 809 | public JsonObject build() { 810 | if (builder == null) { 811 | throw new IllegalStateException("JSON has already been built"); 812 | } 813 | JsonObject object = new JsonObject(builder.append("}").toString()); 814 | builder = null; 815 | return object; 816 | } 817 | 818 | /** 819 | * Escapes the given string like stated in https://www.ietf.org/rfc/rfc4627.txt. 820 | * 821 | *
This method escapes only the necessary characters '"', '\'. and '\u0000' - '\u001F'. 822 | * Compact escapes are not used (e.g., '\n' is escaped as "\u000a" and not as "\n"). 823 | * 824 | * @param value The value to escape. 825 | * @return The escaped value. 826 | */ 827 | private static String escape(String value) { 828 | final StringBuilder builder = new StringBuilder(); 829 | for (int i = 0; i < value.length(); i++) { 830 | char c = value.charAt(i); 831 | if (c == '"') { 832 | builder.append("\\\""); 833 | } else if (c == '\\') { 834 | builder.append("\\\\"); 835 | } else if (c <= '\u000F') { 836 | builder.append("\\u000").append(Integer.toHexString(c)); 837 | } else if (c <= '\u001F') { 838 | builder.append("\\u00").append(Integer.toHexString(c)); 839 | } else { 840 | builder.append(c); 841 | } 842 | } 843 | return builder.toString(); 844 | } 845 | 846 | /** 847 | * A super simple representation of a JSON object. 848 | * 849 | *
This class only exists to make methods of the {@link JsonObjectBuilder} type-safe and not
850 | * allow a raw string inputs for methods like {@link JsonObjectBuilder#appendField(String,
851 | * JsonObject)}.
852 | */
853 | public static class JsonObject {
854 |
855 | private final String value;
856 |
857 | private JsonObject(String value) {
858 | this.value = value;
859 | }
860 |
861 | @Override
862 | public String toString() {
863 | return value;
864 | }
865 | }
866 | }
867 | }
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/src/main/java/dev/unnm3d/loadingscreenremover/PlayerListener.java:
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1 | package dev.unnm3d.loadingscreenremover;
2 |
3 | import com.github.retrooper.packetevents.event.SimplePacketListenerAbstract;
4 | import com.github.retrooper.packetevents.event.simple.PacketPlaySendEvent;
5 | import com.github.retrooper.packetevents.protocol.packettype.PacketType;
6 | import lombok.AllArgsConstructor;
7 | import org.bukkit.entity.Player;
8 | import org.bukkit.event.EventHandler;
9 | import org.bukkit.event.Listener;
10 | import org.bukkit.event.player.PlayerTeleportEvent;
11 |
12 | @AllArgsConstructor
13 | public class PlayerListener extends SimplePacketListenerAbstract implements Listener {
14 | private final LoadingScreenRemover plugin;
15 |
16 | @EventHandler
17 | public void onPlayerTeleportWorld(PlayerTeleportEvent event) {
18 | if (event.getFrom().getWorld() == null || event.getTo().getWorld() == null) return;
19 |
20 | // If the player is changing worlds, and the environments are the same
21 | if (event.getFrom().getWorld() != event.getTo().getWorld() &&
22 | event.getFrom().getWorld().getEnvironment() == event.getTo().getWorld().getEnvironment()) {
23 | plugin.getPlayerManager().addChangingWorldPlayer(event.getPlayer());
24 | }else return;
25 | plugin.getTaskScheduler().runTaskLater(() -> plugin.getPlayerManager().removeChangingWorldPlayer(event.getPlayer()), 2);
26 | }
27 |
28 | @Override
29 | public void onPacketPlaySend(PacketPlaySendEvent event) {
30 | if (event.getPacketType() != PacketType.Play.Server.RESPAWN) {
31 | return;
32 | }
33 |
34 | if (plugin.getPlayerManager().isPlayerChangingWorlds(event.getPlayer())) {
35 | event.setCancelled(true);
36 | }
37 | }
38 | }
39 |
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/src/main/java/dev/unnm3d/loadingscreenremover/PlayerManager.java:
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1 | package dev.unnm3d.loadingscreenremover;
2 |
3 | import org.bukkit.entity.Player;
4 | import org.jetbrains.annotations.NotNull;
5 |
6 | import java.util.Set;
7 | import java.util.concurrent.ConcurrentHashMap;
8 |
9 | public class PlayerManager {
10 | private final Set