├── compile.sh ├── logo.txt ├── PKGBUILD ├── Makefile ├── README.md ├── dvd_ascii.c └── LICENSE /compile.sh: -------------------------------------------------------------------------------- 1 | #!/bin/sh 2 | 3 | # Convert logo.txt to inc for compilation 4 | xxd -i -n dvd_logo logo.txt > logo.inc 5 | 6 | # Compile 7 | export LANG=en_US.UTF-8 8 | gcc -O2 -Wall -Wextra -std=c11 dvd_ascii.c -lncursesw -lm -o dvd 9 | -------------------------------------------------------------------------------- /logo.txt: -------------------------------------------------------------------------------- 1 | ⠀⠀⣸⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⠀⠀⠀⢀⣾⣿⣿⣿⣿⣿⣿⣿⣿⣶⣦⡀ 2 | ⠀⢠⣿⣿⡿⠀⠀⠈⢹⣿⣿⡿⣿⣿⣇⠀⣠⣿⣿⠟⣽⣿⣿⠇⠀⠀⢹⣿⣿⣿ 3 | ⠀⢸⣿⣿⡇⠀⢀⣠⣾⣿⡿⠃⢹⣿⣿⣶⣿⡿⠋⢰⣿⣿⡿⠀⠀⣠⣼⣿⣿⠏ 4 | ⠀⣿⣿⣿⣿⣿⣿⠿⠟⠋⠁⠀⠀⢿⣿⣿⠏⠀⠀⢸⣿⣿⣿⣿⣿⡿⠟⠋⠁⠀ 5 | ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣀⣀⣀⣸⣟⣁⣀⣀⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ 6 | ⣠⣴⣶⣾⣿⣿⣻⡟⣻⣿⢻⣿⡟⣛⢻⣿⡟⣛⣿⡿⣛⣛⢻⣿⣿⣶⣦⣄⡀⠀ 7 | ⠉⠛⠻⠿⠿⠿⠷⣼⣿⣿⣼⣿⣧⣭⣼⣿⣧⣭⣿⣿⣬⡭⠾⠿⠿⠿⠛⠉⠀ 8 | -------------------------------------------------------------------------------- /PKGBUILD: -------------------------------------------------------------------------------- 1 | # cdvd PKGBUILD for Arch Linux 2 | # Maintainer: sernik 3 | pkgname=cdvd-git 4 | pkgver=0.r0.g0000000 5 | pkgrel=1 6 | pkgdesc="CLI bouncing DVD logo (cdvd) — fast, tiny, stupidly fun." 7 | arch=('x86_64' 'aarch64') 8 | url="https://github.com/Szmelc-INC/cdvd" 9 | license=('custom') 10 | depends=() 11 | makedepends=('git' 'make' 'gcc') 12 | provides=('cdvd') 13 | conflicts=('cdvd') 14 | source=("git+$url.git") 15 | sha256sums=('SKIP') 16 | 17 | pkgver() { 18 | cd "$srcdir/cdvd" 19 | # Prefer tag-based version; fallback to r.g 20 | if git describe --tags --long --always >/dev/null 2>&1; then 21 | git describe --tags --long --always \ 22 | | sed -E 's/^v//; s/-([0-9]+)-g/.r\1.g/; s/-/./' 23 | else 24 | printf "r%s.g%s" "$(git rev-list --count HEAD)" "$(git rev-parse --short HEAD)" 25 | fi 26 | } 27 | 28 | prepare() { 29 | cd "$srcdir/cdvd" 30 | # Nuke any attempt to install into /bin; force /usr/bin 31 | # Try common vars; if Makefile is hardcoded, sed it. 32 | sed -i 's|/bin/|/usr/bin/|g' Makefile || true 33 | sed -i 's|\|PREFIX=/usr|g' Makefile || true 35 | } 36 | 37 | build() { 38 | cd "$srcdir/cdvd" 39 | make PREFIX=/usr BINDIR=/usr/bin 40 | } 41 | 42 | package() { 43 | cd "$srcdir/cdvd" 44 | make DESTDIR="$pkgdir" PREFIX=/usr BINDIR=/usr/bin install 45 | 46 | # License (if present); Arch wants it in /usr/share/licenses/$pkgname/ 47 | if [[ -f LICENSE ]]; then 48 | install -Dm644 LICENSE "$pkgdir/usr/share/licenses/$pkgname/LICENSE" 49 | fi 50 | } 51 | -------------------------------------------------------------------------------- /Makefile: -------------------------------------------------------------------------------- 1 | # Simple Makefile for dvd_ascii 2 | # Usage: 3 | # make # build 4 | # make run # run with nice defaults 5 | # sudo make install # install to /bin/cdvd (override BINDIR/INSTALL_NAME) 6 | # sudo make uninstall # remove installed binary 7 | # make clean # clean artifacts 8 | 9 | # Feature-test macros: force 700 here, strip conflicts from env 10 | # try pkg-config 11 | # --- pkg-config (may inject nasty -D flags) --- 12 | CURSES_LIBS := $(shell pkg-config --libs ncursesw 2>/dev/null || echo -lncursesw) 13 | CURSES_CFLAGS := $(shell pkg-config --cflags ncursesw 2>/dev/null) 14 | 15 | CC ?= gcc 16 | CFLAGS ?= -O2 -Wall -Wextra -std=c11 17 | CPPFLAGS ?= 18 | 19 | # Build up CPPFLAGS, then nuke any conflicting crap (including pkg-config’s) 20 | CPPFLAGS += $(CURSES_CFLAGS) 21 | CPPFLAGS += -D_XOPEN_SOURCE=700 -D_XOPEN_SOURCE_EXTENDED=1 -DNCURSES_WIDECHAR=1 22 | CPPFLAGS := $(filter-out -D_XOPEN_SOURCE=% -D_DEFAULT_SOURCE,$(CPPFLAGS)) 23 | 24 | LDLIBS ?= $(CURSES_LIBS) -lm 25 | 26 | 27 | # Project stuff 28 | TARGET := dvd 29 | INSTALL_NAME ?= cdvd 30 | SRC := dvd_ascii.c 31 | LOGO_TXT ?= logo.txt 32 | LOGO_INC := logo.inc 33 | 34 | # Install paths 35 | BINDIR ?= /bin 36 | DESTDIR ?= 37 | INSTALL ?= install 38 | STRIP ?= strip 39 | 40 | .PHONY: all clean run install uninstall 41 | 42 | all: $(TARGET) 43 | 44 | $(LOGO_INC): $(LOGO_TXT) 45 | xxd -i -n dvd_logo $< > $@ 46 | 47 | $(TARGET): $(SRC) $(LOGO_INC) 48 | $(CC) $(CFLAGS) $(CPPFLAGS) -o $@ $(SRC) $(LDLIBS) 49 | 50 | run: $(TARGET) 51 | ./$(TARGET) --info -t 5 --mask-edges 52 | 53 | install: $(TARGET) 54 | $(INSTALL) -d "$(DESTDIR)$(BINDIR)" 55 | $(INSTALL) -m 0755 "$(TARGET)" "$(DESTDIR)$(BINDIR)/$(INSTALL_NAME)" 56 | @if [ -z "$$NO_STRIP" ]; then \ 57 | $(STRIP) --strip-unneeded "$(DESTDIR)$(BINDIR)/$(INSTALL_NAME)" || true; \ 58 | fi 59 | @echo "Installed $(INSTALL_NAME) -> $(DESTDIR)$(BINDIR)/$(INSTALL_NAME)" 60 | 61 | uninstall: 62 | $(RM) "$(DESTDIR)$(BINDIR)/$(INSTALL_NAME)" 63 | @echo "Removed $(DESTDIR)$(BINDIR)/$(INSTALL_NAME)" 64 | 65 | clean: 66 | $(RM) $(TARGET) $(LOGO_INC) 67 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 |
2 | 3 | 4 | 5 | 6 | cDvD 7 | 8 |

𝙘𝘿𝙫𝘿

9 | 10 |
𝙾𝚕𝚍-𝚜𝚌𝚑𝚘𝚘𝚕 𝚜𝚌𝚛𝚎𝚎𝚗𝚜𝚊𝚟𝚎𝚛 𝚒𝚗 𝚝𝚎𝚛𝚖𝚒𝚗𝚊𝚕
11 |

𝙰 𝚝𝚒𝚗𝚢 𝙲 / 𝚗𝚌𝚞𝚛𝚜𝚎𝚜 𝚎𝚢𝚎𝚌𝚊𝚗𝚍𝚢 for command line, 𝚍𝚛𝚊𝚠𝚜 𝚊 𝚋𝚘𝚞𝚗𝚌𝚒𝚗𝚐 𝙳𝚟𝙳 𝚕𝚘𝚐𝚘 𝚠𝚒𝚝𝚑 𝚊 𝚏𝚎𝚠 𝚎𝚡𝚝𝚛𝚊 𝚏𝚎𝚊𝚝𝚞𝚛𝚎𝚜. 12 | 13 |

14 | 20 |

21 | 22 |

51 | 52 | --- 53 | 54 | > [!TIP] 55 | >> # Demo 🎬 56 | >>
57 | >>

Gif / Asciimation

 58 | >> 59 | >> Recorded with [ASCIINEMA](https://asciinema.org/a/736340) 60 | >> 61 | >>

62 | >> 63 | >> short demo 64 | >> 65 | >> long 66 | >>

67 | 68 | 69 | > [!IMPORTANT] 70 | > # Quick Install 71 | > Clone 72 | > ```sh 73 | > git clone https://github.com/Szmelc-INC/cdvd.git && cd cdvd 74 | > ``` 75 | > Build, install into `/bin/cdvd` and clean build artifacts 76 | > ```sh 77 | > make && sudo make install && make clean 78 | > ``` 79 | 80 | --- 81 | 82 | > [!NOTE] 83 | > # ***Info*** 84 | > > 85 | > > ## Distribution 86 | > > #### I'm planning on releasing this package via as many sources as possible, official/non-official repos, package managers, and more. 87 | >>
88 | >>

📦 Packaging

 89 | >> 90 | >> ### Main Linux / UNIX distros 91 | >> | Status | System/Family | Target repo(s) | 92 | >> |---|---|---| 93 | >> | ❌ | Arch / Endeavour / Manjaro | **AUR** (PKGBUILD) | 94 | >> | ❌ | Debian (stable/testing/unstable) | **Debian archive** (mentors → NEW) | 95 | >> | ❌ | Ubuntu / Pop!_OS / Mint | **Ubuntu archive** | 96 | >> | ❌ | Ubuntu / Pop!_OS / Mint | **Launchpad PPA** | 97 | >> | ❌ | Fedora | **Fedora official** | 98 | >> | ❌ | Fedora / RHEL family | **COPR** (can target **EPEL**) | 99 | >> | ❌ | RHEL / Rocky / Alma | **EPEL** | 100 | >> | ❌ | openSUSE Tumbleweed/Leap | **OBS → openSUSE repos** | 101 | >> | ❌ | Gentoo | **::gentoo** (main tree) | 102 | >> | ❌ | Gentoo | **::guru** overlay | 103 | >> | ❌ | Alpine | **aports: community/testing** | 104 | >> | ❌ | Void Linux | **void-packages** | 105 | >> | ❌ | Slackware | **SlackBuilds.org (SBo)** | 106 | >> | ❌ | Solus | **Solus repo** | 107 | >> | ❌ | Mageia | **Core / Updates / Backports** | 108 | >> | ❌ | NixOS / any Linux w/ Nix | **nixpkgs** | 109 | >> | ❌ | Nix (community) | **NUR** | 110 | >> | ❌ | GNU Guix | **guix (main channel)** | 111 | >> | ❌ | FreeBSD | **Ports** → pkg | 112 | >> | ❌ | OpenBSD | **ports** → packages | 113 | >> | ❌ | NetBSD / cross-OS | **pkgsrc** | 114 | >> 115 | >> ### Extras & cross-platform 116 | >> 117 | >> | Status | Platform | Target repo(s) | 118 | >> |---|---|---| 119 | >> | ❌ | macOS + Linux | **Homebrew/homebrew-core** | 120 | >> | ❌ | macOS | **MacPorts** | 121 | >> | ❌ | Universal | **Snap Store** | 122 | >> | ❌ | Universal | **Flathub (Flatpak)** | 123 | >> | ❌ | Universal | **AppImage + AppImageHub** | 124 | >> | ❌ | Windows | **winget** | 125 | >> | ❌ | Windows | **Scoop** | 126 | >> | ❌ | Windows | **Chocolatey** | 127 | >> | ❌ | Python/conda users | **conda-forge** | 128 | >> | ❌ | HPC | **Spack** | 129 | >> | ❌ | Multi-distro builder | **OBS project** | 130 | >> | ❌ | RPM builder | **COPR** | 131 | >> | ❌ | Containers | **Docker/OCI on ghcr.io** | 132 | >> 133 | >>
134 | >>
135 | >>

🤝 Contribute

 136 | >> 137 | >> ## Looking for a project to contribute? 138 | >> I kinda need help with repackaging & maintaining it for different platforms, If you want to help, hit me up on Discord, Email or by any means. \ 139 | >> [![Email](https://img.shields.io/badge/Mail-EA4335?style=flat&logo=gmail&logoColor=white&labelColor=darkred&color=silver)](mailto:serainox@gmail.com) [![Discord](https://img.shields.io/badge/Sernik-002333?style=flat&logo=discord&logoColor=00FF84)](https://discord.com/users/818166724641030193) 140 | 141 | 142 | --- 143 | 144 | > [!TIP] 145 | > Details on usage and available options 146 | > # Usage 147 | > ```bash 148 | > cdvd [-f fps] [-s speed] [-t decay_sec] [-L logo.txt] [--info] [--mask-edges|--mask-blanks] 149 | > ``` 150 | >### Flags 151 | >| Flag | Description | 152 | >|------|-------------| 153 | >| `-f ` | Frames per second | 154 | >| `-s ` | Cells per second (movement speed) | 155 | >| `-t ` | Ghost‑trail decay time (0 = off) | 156 | >| `-L ` | Load a UTF‑8 logo file at runtime | 157 | >| `--info` | Show status HUD line | 158 | >| `--mask-edges` / `--mask-blanks` | Edge/blank masking modes | 159 | > 160 | >### Hotkeys (at runtime) 161 | >| Action | Key(s) | 162 | >|---|---| 163 | >| Toggle trail | `t` | 164 | >| Toggle info HUD | `i` | 165 | >| Speed ± | `←` / `→` | 166 | >| FPS ± | `↑` / `↓` | 167 | >| Decay ± | `y` / `u` | 168 | 169 | 170 | --- 171 | 172 | > [!IMPORTANT] 173 | > # Compiling 174 | > You can change logo to anything you preffer before compilation, to bake it into binary, or with a `-L` flag in runtime \ 175 | > Make sure you have `logo.txt` with ASCII art before compiling \ 176 | > ## Buld 177 | > With Makefile: 178 | >```c 179 | ># make # build 180 | ># make run # run with nice defaults 181 | ># sudo make install # install to /bin/cdvd (override BINDIR/INSTALL_NAME) 182 | ># sudo make uninstall # remove installed binary 183 | ># make clean # clean artifacts 184 | >``` 185 | > Alternatively run `bash compile.sh` \ 186 | > Or manually: 187 | > Convert logo.txt to inc before compilation 188 | >```c 189 | >xxd -i -n dvd_logo logo.txt > logo.inc 190 | >``` 191 | > Compile 192 | >```c 193 | >export LANG=en_US.UTF-8 194 | >gcc -O2 -Wall -Wextra -std=c11 dvd_ascii.c -lncursesw -lm -o dvd 195 | >``` 196 | 197 | --- 198 | 199 | > [!NOTE] 200 | > ## Custom logos 201 | >- Provide your own ASCII/UTF‑8 art via `-L path/to/logo.txt` at runtime. 202 | > ### Default logo.txt 203 | > > ```csv 204 | > > ⠀⠀⣸⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⠀⠀⠀⢀⣾⣿⣿⣿⣿⣿⣿⣿⣿⣶⣦⡀ 205 | >>⠀⢠⣿⣿⡿⠀⠀⠈⢹⣿⣿⡿⣿⣿⣇⠀⣠⣿⣿⠟⣽⣿⣿⠇⠀⠀⢹⣿⣿⣿ 206 | >>⠀⢸⣿⣿⡇⠀⢀⣠⣾⣿⡿⠃⢹⣿⣿⣶⣿⡿⠋⢰⣿⣿⡿⠀⠀⣠⣼⣿⣿⠏ 207 | >>⠀⣿⣿⣿⣿⣿⣿⠿⠟⠋⠁⠀⠀⢿⣿⣿⠏⠀⠀⢸⣿⣿⣿⣿⣿⡿⠟⠋⠁⠀ 208 | >>⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣀⣀⣀⣸⣟⣁⣀⣀⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ 209 | >>⣠⣴⣶⣾⣿⣿⣻⡟⣻⣿⢻⣿⡟⣛⢻⣿⡟⣛⣿⡿⣛⣛⢻⣿⣿⣶⣦⣄⡀⠀ 210 | >>⠉⠛⠻⠿⠿⠿⠷⣼⣿⣿⣼⣿⣧⣭⣼⣿⣧⣭⣿⣿⣬⡭⠾⠿⠿⠿⠛⠉⠀ 211 | >>``` 212 | > #### Or bake it in at compile time using the `xxd` step above. 213 | >- Make sure your terminal font supports the characters you use. 214 | > 215 | > --- 216 | 217 | > [!WARNING] 218 | >>## Logos / Banners 219 | >>

Images / Logos

 220 | >> Banners
221 | >> long 222 | >>

223 | >> long 224 | >>

225 | >> Logos
226 | >> long 227 | >>

228 | >> long 229 | >>
230 | >> --- 231 | 232 | > [!CAUTION] 233 | > DETAILS 234 | >## Requirements 235 | > 236 | >- A POSIX‑y environment (Linux, BSD, macOS). 237 | >- `ncursesw`, `gcc`/`clang`, and `make` (if using the Makefile). 238 | >- UTF‑8 locale (e.g., `LANG=en_US.UTF-8`). 239 | > 240 | > --- 241 | > 242 | >## 📝 Notes 243 | > 244 | >- Terminal size affects bounce boundaries (resizing is handled on the fly). 245 | >- For best visuals, use a font with good box‑drawing / block character coverage. 246 | >- Also, Important to note is, this project was mostly just ***Vibe Coded*** with much help from an A.I assistant, 247 | >- while I took it as a learning opportunity with a project that does not neceaseaarly have to be fully understood right away and memory safe! 248 | -------------------------------------------------------------------------------- /dvd_ascii.c: -------------------------------------------------------------------------------- 1 | // dvd_ascii.c — Bouncing ASCII/Unicode logo with optional decaying trail 2 | // Hotkeys: 3 | // ←/→ : speed -/+ 1 (clamp 1..200) 4 | // ↑/↓ : FPS -/+ 1 (clamp 5..240) 5 | // t : toggle trail (on sets 5s if 0; off clears ghosts) 6 | // y/u : trail decay -/+ 1s (clamp 0..60) 7 | // m : cycle mask mode: OFF → EDGES → ALL → OFF 8 | // i : toggle HUD on/off 9 | // Masking modes (CLI): 10 | // --mask-blanks : skip ALL whitespace/zero-width glyphs (logo + ghosts) 11 | // --mask-edges : skip only leading/trailing blanks per row 12 | // 13 | // Build: 14 | // xxd -i -n dvd_logo logo.txt > logo.inc 15 | // gcc -O2 -Wall -Wextra -std=c11 dvd_ascii.c -lncursesw -lm -o dvd 16 | // 17 | // Run: 18 | // ./dvd [-f fps] [-s speed] [-t decay_sec] [-L logo.txt] [--info] [--mask-edges|--mask-blanks] 19 | 20 | #define _XOPEN_SOURCE 700 21 | #define _XOPEN_SOURCE_EXTENDED 1 22 | #define NCURSES_WIDECHAR 1 23 | 24 | #include 25 | #include 26 | #include 27 | #include 28 | #include 29 | #include 30 | #include 31 | #include 32 | #include 33 | #include 34 | #include 35 | #include 36 | 37 | // ---------- embedded logo bytes generated by: xxd -i -n dvd_logo logo.txt ---------- 38 | #include "logo.inc" // unsigned char dvd_logo[]; unsigned int dvd_logo_len; 39 | // ----------------------------------------------------------------------------------- 40 | 41 | typedef struct { 42 | wchar_t **rows; // wide strings (null-terminated) 43 | int *wcell; // display width (cells) per row 44 | int *first; // first non-invisible glyph start col (cells) 45 | int *last; // last non-invisible glyph end col (cells) 46 | int h; // number of rows 47 | int w; // max display width (cells) 48 | } WLogo; 49 | 50 | typedef struct { 51 | int y, x; // integer position in cells 52 | float life; // seconds remaining 53 | float total; // original life 54 | unsigned char col; // color pair 1..7 55 | } Ghost; 56 | 57 | typedef struct { 58 | Ghost *v; 59 | int n, cap; 60 | } GhostList; 61 | 62 | typedef enum { MASK_NONE = 0, MASK_ALL = 1, MASK_EDGES = 2 } MaskMode; 63 | 64 | static void die_nc(const char *msg) { 65 | endwin(); 66 | fprintf(stderr, "Error: %s\n", msg); 67 | exit(1); 68 | } 69 | 70 | /* -------------------- logo loading (UTF-8 -> wide) -------------------- */ 71 | 72 | static wchar_t *mb_to_wide(const char *mb) { 73 | mbstate_t st = (mbstate_t){0}; 74 | const char *src = mb; 75 | size_t need = mbsrtowcs(NULL, &src, 0, &st); 76 | if (need == (size_t)-1) return NULL; 77 | wchar_t *w = calloc(need + 1, sizeof(wchar_t)); 78 | if (!w) return NULL; 79 | st = (mbstate_t){0}; src = mb; 80 | size_t got = mbsrtowcs(w, &src, need, &st); 81 | if (got == (size_t)-1) { free(w); return NULL; } 82 | w[got] = L'\0'; 83 | return w; 84 | } 85 | 86 | // strict “invisible glyph” test (beyond iswspace) 87 | static inline bool is_invisible_glyph(wchar_t wc) { 88 | if (wc == 0) return true; 89 | if (iswspace(wc)) return true; 90 | if (wc == 0x00A0) return true; // NBSP 91 | if (wc == 0x2800) return true; // Braille blank 92 | if (wc == 0xFEFF) return true; // BOM / ZWNBSP 93 | if (wc == 0x200B || wc == 0x200C || wc == 0x200D) return true; // ZWSP/ZWNJ/ZWJ 94 | if (wc == 0x2060) return true; // WORD JOINER 95 | if (wc == 0x3164 || wc == 0x115F || wc == 0xFFA0) return true; // Hangul fillers, halfwidth NBSP 96 | if ((wc >= 0x2000 && wc <= 0x200A) || wc == 0x202F || wc == 0x205F || wc == 0x3000) return true; 97 | return false; 98 | } 99 | 100 | static void push_row(WLogo *L, wchar_t *w, int width) { 101 | static int cap = 0; 102 | if (L->h >= cap) { 103 | cap = cap ? cap * 2 : 8; 104 | L->rows = realloc(L->rows, (size_t)cap * sizeof(*L->rows)); 105 | L->wcell = realloc(L->wcell, (size_t)cap * sizeof(*L->wcell)); 106 | L->first = realloc(L->first, (size_t)cap * sizeof(*L->first)); 107 | L->last = realloc(L->last, (size_t)cap * sizeof(*L->last)); 108 | if (!L->rows || !L->wcell || !L->first || !L->last) die_nc("OOM"); 109 | } 110 | // compute first/last visible extents in display cells for this row 111 | int col = 0; 112 | int first = -1, last = -1; 113 | for (const wchar_t *p = w; *p; ++p) { 114 | int cw = wcwidth(*p); 115 | if (cw < 0) cw = 1; 116 | if (cw == 0) continue; // combining mark shouldn't influence extents 117 | if (!is_invisible_glyph(*p)) { 118 | if (first < 0) first = col; 119 | last = col + cw - 1; 120 | } 121 | col += cw; 122 | } 123 | L->rows[L->h] = w; 124 | L->wcell[L->h] = width; 125 | L->first[L->h] = first; 126 | L->last[L->h] = last; 127 | 128 | if (width > L->w) L->w = width; 129 | L->h++; 130 | } 131 | 132 | static WLogo load_logo_from_bytes(const unsigned char *buf, size_t len) { 133 | WLogo L = (WLogo){0}; 134 | size_t i = 0, line_start = 0; 135 | 136 | while (i <= len) { 137 | if (i == len || buf[i] == '\n') { 138 | size_t line_len = i - line_start; 139 | if (line_len && buf[line_start + line_len - 1] == '\r') line_len--; 140 | 141 | char *mb = malloc(line_len + 1); 142 | if (!mb) die_nc("OOM"); 143 | memcpy(mb, buf + line_start, line_len); 144 | mb[line_len] = '\0'; 145 | 146 | wchar_t *w = mb_to_wide(mb); 147 | free(mb); 148 | if (!w) die_nc("embedded logo: invalid UTF-8 for this locale"); 149 | 150 | int width = wcswidth(w, wcslen(w)); 151 | if (width < 0) width = (int)wcslen(w); 152 | push_row(&L, w, width); 153 | 154 | line_start = i + 1; 155 | } 156 | i++; 157 | } 158 | if (L.h == 0) die_nc("embedded logo is empty"); 159 | return L; 160 | } 161 | 162 | static WLogo load_logo_from_file(const char *path) { 163 | FILE *f = fopen(path, "rb"); 164 | if (!f) { char b[512]; snprintf(b, sizeof(b), "cannot open '%s': %s", path, strerror(errno)); die_nc(b); } 165 | 166 | fseek(f, 0, SEEK_END); 167 | long sz = ftell(f); 168 | if (sz < 0) { fclose(f); die_nc("ftell failed"); } 169 | fseek(f, 0, SEEK_SET); 170 | 171 | unsigned char *buf = malloc((size_t)sz); 172 | if (!buf) { fclose(f); die_nc("OOM"); } 173 | size_t rd = fread(buf, 1, (size_t)sz, f); 174 | fclose(f); 175 | if (rd != (size_t)sz) { free(buf); die_nc("short read"); } 176 | 177 | WLogo r = load_logo_from_bytes(buf, rd); 178 | free(buf); 179 | return r; 180 | } 181 | 182 | static void free_logo(WLogo *L) { 183 | if (!L) return; 184 | for (int i = 0; i < L->h; i++) free(L->rows[i]); 185 | free(L->rows); 186 | free(L->wcell); 187 | free(L->first); 188 | free(L->last); 189 | *L = (WLogo){0}; 190 | } 191 | 192 | /* ------------------------ timing & colors ------------------------ */ 193 | 194 | static double now_sec(void) { 195 | struct timespec ts; clock_gettime(CLOCK_MONOTONIC, &ts); 196 | return (double)ts.tv_sec + (double)ts.tv_nsec * 1e-9; 197 | } 198 | 199 | static void init_colors(void) { 200 | if (!has_colors()) return; 201 | start_color(); 202 | use_default_colors(); 203 | init_pair(1, COLOR_RED, -1); 204 | init_pair(2, COLOR_GREEN, -1); 205 | init_pair(3, COLOR_YELLOW, -1); 206 | init_pair(4, COLOR_BLUE, -1); 207 | init_pair(5, COLOR_MAGENTA, -1); 208 | init_pair(6, COLOR_CYAN, -1); 209 | init_pair(7, COLOR_WHITE, -1); 210 | } 211 | 212 | /* --------------------------- ghosts --------------------------- */ 213 | 214 | static void ghosts_init(GhostList *G, int initial_cap) { 215 | G->n = 0; 216 | G->cap = initial_cap > 0 ? initial_cap : 256; 217 | G->v = malloc((size_t)G->cap * sizeof(Ghost)); 218 | if (!G->v) die_nc("OOM"); 219 | } 220 | 221 | static void ghosts_free(GhostList *G) { 222 | free(G->v); 223 | *G = (GhostList){0}; 224 | } 225 | 226 | static void ghosts_clear(GhostList *G) { 227 | G->n = 0; 228 | } 229 | 230 | static void ghosts_add(GhostList *G, int y, int x, float decay, unsigned char col) { 231 | if (decay <= 0.0f) return; 232 | if (G->n >= G->cap) { 233 | G->cap *= 2; 234 | G->v = realloc(G->v, (size_t)G->cap * sizeof(Ghost)); 235 | if (!G->v) die_nc("OOM"); 236 | } 237 | G->v[G->n++] = (Ghost){ .y = y, .x = x, .life = decay, .total = decay, .col = col }; 238 | } 239 | 240 | static void ghosts_age(GhostList *G, float dt) { 241 | for (int i = 0; i < G->n; i++) { 242 | if (G->v[i].life > 0.0f) { 243 | G->v[i].life -= dt; 244 | if (G->v[i].life < 0.0f) G->v[i].life = 0.0f; 245 | } 246 | } 247 | } 248 | 249 | static void ghosts_compact(GhostList *G) { 250 | int w = 0; 251 | for (int i = 0; i < G->n; i++) { 252 | if (G->v[i].life > 0.0f) G->v[w++] = G->v[i]; 253 | } 254 | G->n = w; 255 | } 256 | 257 | /* -------------------- ordered-dither fade helpers -------------------- */ 258 | 259 | static const unsigned char BAYER8[8][8] = { 260 | { 0,32, 8,40, 2,34,10,42 }, 261 | {48,16,56,24,50,18,58,26 }, 262 | {12,44, 4,36,14,46, 6,38 }, 263 | {60,28,52,20,62,30,54,22 }, 264 | { 3,35,11,43, 1,33, 9,41 }, 265 | {51,19,59,27,49,17,57,25 }, 266 | {15,47, 7,39,13,45, 5,37 }, 267 | {63,31,55,23,61,29,53,21 }, 268 | }; 269 | 270 | static inline int fade_keep_bayer(int x, int y, float r) { 271 | float q = powf(r, 1.5f); 272 | int thresh = (int)(q * 64.0f + 0.5f); 273 | int b = BAYER8[y & 7][x & 7]; 274 | return thresh > b; 275 | } 276 | 277 | /* ------------------------- draw routines ------------------------- */ 278 | 279 | static void ghosts_draw(const GhostList *G, const WLogo *LOGO, int max_rows, int cols, MaskMode mode) { 280 | for (int i = 0; i < G->n; i++) { 281 | const Ghost *g = &G->v[i]; 282 | if (g->life <= 0.0f) continue; 283 | 284 | float r = g->life / (g->total > 0.0f ? g->total : 1.0f); 285 | attr_t attr = (r > 0.66f) ? A_NORMAL : A_DIM; // hint; dither does the work 286 | 287 | if (has_colors() && g->col >= 1 && g->col <= 7) attron(COLOR_PAIR(g->col) | attr); 288 | else attron(attr); 289 | 290 | for (int row = 0; row < LOGO->h; row++) { 291 | int y = g->y + row; 292 | if (y < 0 || y >= max_rows) continue; 293 | 294 | int screen_x = g->x; 295 | int col = 0; // row-local display column 296 | const wchar_t *p = LOGO->rows[row]; 297 | 298 | while (*p) { 299 | int cw = wcwidth(*p); 300 | if (cw < 0) cw = 1; 301 | 302 | // combining mark (zero-width) 303 | if (cw == 0) { 304 | if (mode == MASK_NONE || 305 | (mode == MASK_ALL ? false 306 | : (LOGO->first[row] <= LOGO->last[row] && col >= LOGO->first[row] && col <= LOGO->last[row]))) { 307 | if (screen_x >= 0 && screen_x < cols) { 308 | if (fade_keep_bayer(screen_x, y, r)) mvaddnwstr(y, screen_x, p, 1); 309 | } 310 | } 311 | p++; // no col/screen_x advance 312 | continue; 313 | } 314 | 315 | bool draw_this = true; 316 | if (mode == MASK_ALL) { 317 | if (is_invisible_glyph(*p)) draw_this = false; 318 | } else if (mode == MASK_EDGES) { 319 | if (is_invisible_glyph(*p)) { 320 | int first = LOGO->first[row], last = LOGO->last[row]; 321 | if (!(first <= last)) draw_this = false; // whole row invisible → skip 322 | else if ((col + cw - 1) < first || col > last) draw_this = false; 323 | } 324 | } 325 | if (draw_this && !(screen_x + cw <= 0 || screen_x >= cols)) { 326 | if (fade_keep_bayer(screen_x, y, r)) mvaddnwstr(y, screen_x, p, 1); 327 | } 328 | 329 | screen_x += cw; 330 | col += cw; 331 | p++; 332 | } 333 | } 334 | 335 | if (has_colors() && g->col >= 1 && g->col <= 7) attroff(COLOR_PAIR(g->col) | attr); 336 | else attroff(attr); 337 | } 338 | } 339 | 340 | static void draw_logo_clip(const WLogo *L, int top, int left, int rows, int cols, MaskMode mode) { 341 | for (int i = 0; i < L->h; i++) { 342 | int y = top + i; 343 | if (y < 0 || y >= rows) continue; 344 | 345 | int screen_x = left; 346 | int col = 0; // row-local display column 347 | const wchar_t *p = L->rows[i]; 348 | 349 | while (*p) { 350 | int cw = wcwidth(*p); 351 | if (cw < 0) cw = 1; 352 | 353 | if (cw == 0) { // combining mark 354 | if (mode == MASK_NONE || 355 | (mode == MASK_ALL ? false 356 | : (L->first[i] <= L->last[i] && col >= L->first[i] && col <= L->last[i]))) { 357 | if (screen_x >= 0 && screen_x < cols) mvaddnwstr(y, screen_x, p, 1); 358 | } 359 | p++; 360 | continue; 361 | } 362 | 363 | bool draw_this = true; 364 | if (mode == MASK_ALL) { 365 | if (is_invisible_glyph(*p)) draw_this = false; 366 | } else if (mode == MASK_EDGES) { 367 | if (is_invisible_glyph(*p)) { 368 | int first = L->first[i], last = L->last[i]; 369 | if (!(first <= last)) draw_this = false; 370 | else if ((col + cw - 1) < first || col > last) draw_this = false; 371 | } 372 | } 373 | 374 | if (draw_this && !(screen_x + cw <= 0 || screen_x >= cols)) { 375 | mvaddnwstr(y, screen_x, p, 1); 376 | } 377 | screen_x += cw; 378 | col += cw; 379 | p++; 380 | } 381 | } 382 | } 383 | 384 | /* --------------------------------- main --------------------------------- */ 385 | 386 | int main(int argc, char **argv) { 387 | setlocale(LC_ALL, ""); 388 | 389 | double fps = 20.0; // Found out 20fps looks smoother than 60 390 | double speed = 28.0; // cells/sec seems about right 391 | double t_decay = 0.0; // seconds (0 = no trail) 392 | bool trail_enabled = false; 393 | int show_info = 0; 394 | MaskMode mask_mode = MASK_NONE; 395 | const char *logo_path = NULL; // NULL => use embedded logo.inc 396 | 397 | for (int i = 1; i < argc; i++) { 398 | if (!strcmp(argv[i], "-f") && i+1 < argc) fps = atof(argv[++i]); 399 | else if (!strcmp(argv[i], "-s") && i+1 < argc) speed = atof(argv[++i]); 400 | else if (!strcmp(argv[i], "-t") && i+1 < argc) { t_decay = atof(argv[++i]); trail_enabled = (t_decay > 0.0); } 401 | else if (!strcmp(argv[i], "-L") && i+1 < argc) logo_path = argv[++i]; 402 | else if (!strcmp(argv[i], "--info")) show_info = 1; 403 | else if (!strcmp(argv[i], "--mask-blanks")) mask_mode = MASK_ALL; 404 | else if (!strcmp(argv[i], "--mask-edges")) mask_mode = MASK_EDGES; // wins if both given 405 | else { 406 | fprintf(stderr, 407 | "Usage: %s [-f fps] [-s speed] [-t decay_sec] [-L logo.txt] [--info] [--mask-edges|--mask-blanks]\n", 408 | argv[0]); 409 | return 1; 410 | } 411 | } 412 | 413 | // If user gave -t 0, trail_enabled stays false; otherwise explicit -t>0 turns it on. 414 | if (!trail_enabled && t_decay > 0.0) trail_enabled = true; 415 | 416 | WLogo LOGO = logo_path 417 | ? load_logo_from_file(logo_path) 418 | : load_logo_from_bytes(dvd_logo, (size_t)dvd_logo_len); 419 | 420 | srand((unsigned)time(NULL)); 421 | 422 | initscr(); cbreak(); noecho(); 423 | keypad(stdscr, TRUE); 424 | nodelay(stdscr, TRUE); 425 | curs_set(0); 426 | init_colors(); 427 | 428 | int rows, cols; getmaxyx(stdscr, rows, cols); 429 | int hud_rows = show_info ? 1 : 0; 430 | int content_rows = rows - hud_rows; 431 | if (content_rows < 1) content_rows = rows; 432 | 433 | // Start centered in content area 434 | double x = (cols - LOGO.w) > 0 ? (cols - LOGO.w) / 2.0 : 0.0; 435 | double y = (content_rows - LOGO.h) > 0 ? (content_rows - LOGO.h) / 2.0 : 0.0; 436 | 437 | // Unit diagonal direction (constant speed) 438 | double dx = (rand() & 1) ? 1.0 : -1.0; 439 | double dy = (rand() & 1) ? 1.0 : -1.0; 440 | double invlen = 1.0 / sqrt(dx*dx + dy*dy); 441 | dx *= invlen; dy *= invlen; 442 | 443 | int color = 1 + rand() % 7; 444 | 445 | GhostList ghosts = {0}; 446 | ghosts_init(&ghosts, 256); 447 | 448 | // clamp helpers 449 | #define CLAMP(v,lo,hi) do{ if((v)<(lo)) (v)=(lo); else if((v)>(hi)) (v)=(hi); }while(0) 450 | 451 | CLAMP(fps, 5.0, 240.0); 452 | CLAMP(speed, 1.0, 200.0); 453 | CLAMP(t_decay, 0.0, 60.0); 454 | 455 | double frame_s = 1.0 / fps; 456 | double t_prev = now_sec(); 457 | 458 | int last_gx = (int)llround(x), last_gy = (int)llround(y); 459 | int last_color = -1; 460 | 461 | while (1) { 462 | int ch = getch(); 463 | if (ch == 'q' || ch == 27) break; 464 | 465 | // Hotkeys 466 | if (ch == KEY_LEFT) { speed -= 1.0; CLAMP(speed, 1.0, 200.0); } 467 | if (ch == KEY_RIGHT) { speed += 1.0; CLAMP(speed, 1.0, 200.0); } 468 | if (ch == KEY_UP) { fps += 1.0; CLAMP(fps, 5.0, 240.0); frame_s = 1.0 / fps; } 469 | if (ch == KEY_DOWN) { fps -= 1.0; CLAMP(fps, 5.0, 240.0); frame_s = 1.0 / fps; } 470 | if (ch == 'y' || ch == 'Y') { t_decay -= 1.0; CLAMP(t_decay, 0.0, 60.0); } 471 | if (ch == 'u' || ch == 'U') { t_decay += 1.0; CLAMP(t_decay, 0.0, 60.0); } 472 | if (ch == 't' || ch == 'T') { 473 | trail_enabled = !trail_enabled; 474 | if (!trail_enabled) { ghosts_clear(&ghosts); } 475 | else if (t_decay <= 0.0) { t_decay = 5.0; } // default when enabling 476 | } 477 | if (ch == 'm' || ch == 'M') { 478 | // cycle: OFF -> EDGES -> ALL -> OFF 479 | mask_mode = (mask_mode == MASK_NONE) ? MASK_EDGES 480 | : (mask_mode == MASK_EDGES) ? MASK_ALL 481 | : MASK_NONE; 482 | } 483 | if (ch == 'i' || ch == 'I') { 484 | show_info = !show_info; 485 | } 486 | 487 | // Handle resize 488 | if (ch == KEY_RESIZE) { 489 | getmaxyx(stdscr, rows, cols); 490 | } 491 | 492 | // Recompute HUD/content rows every frame (covers 'i' toggle too) 493 | hud_rows = show_info ? 1 : 0; 494 | content_rows = rows - hud_rows; 495 | if (content_rows < 1) content_rows = rows; 496 | 497 | // Clamp position within current bounds (also protects on HUD toggle) 498 | if (x < 0) x = 0; 499 | if (y < 0) y = 0; 500 | if (x + LOGO.w > cols) x = cols - LOGO.w; 501 | if (y + LOGO.h > content_rows) y = content_rows - LOGO.h; 502 | 503 | double t_now = now_sec(); 504 | double dt = t_now - t_prev; 505 | if (dt > 0.25) dt = 0.25; 506 | t_prev = t_now; 507 | 508 | // Age & prune ghosts 509 | ghosts_age(&ghosts, (float)dt); 510 | if (ghosts.n > 0 && ghosts.v[0].life <= 0.0f) ghosts_compact(&ghosts); 511 | 512 | // Move logo 513 | x += dx * speed * dt; 514 | y += dy * speed * dt; 515 | 516 | int hitX = 0, hitY = 0; 517 | if (x <= 0) { x = 0; dx = fabs(dx); hitX = 1; } 518 | if (x + LOGO.w >= cols) { x = cols - LOGO.w; dx = -fabs(dx); hitX = 1; } 519 | if (y <= 0) { y = 0; dy = fabs(dy); hitY = 1; } 520 | if (y + LOGO.h >= content_rows) { y = content_rows - LOGO.h;dy = -fabs(dy); hitY = 1; } 521 | 522 | if (hitX || hitY) { 523 | int newc; do { newc = 1 + rand() % 7; } while (newc == color); 524 | color = newc; 525 | if (hitX && hitY) beep(); 526 | } 527 | 528 | // Drop a ghost at integer-rounded position (only if moved a cell or color changed) 529 | int gx = (int)llround(x), gy = (int)llround(y); 530 | if (trail_enabled && t_decay > 0.0 && (gx != last_gx || gy != last_gy || color != last_color)) { 531 | ghosts_add(&ghosts, gy, gx, (float)t_decay, (unsigned char)color); 532 | last_gx = gx; last_gy = gy; last_color = color; 533 | } 534 | 535 | erase(); 536 | 537 | // 1) draw ghosts (faded) 538 | if (trail_enabled) { 539 | ghosts_draw(&ghosts, &LOGO, content_rows, cols, mask_mode); 540 | } 541 | 542 | // 2) draw live logo on top 543 | attr_t baseAttr = A_BOLD; 544 | if (has_colors()) attron(COLOR_PAIR(color) | baseAttr); else attron(baseAttr); 545 | draw_logo_clip(&LOGO, gy, gx, content_rows, cols, mask_mode); 546 | if (has_colors()) attroff(COLOR_PAIR(color) | baseAttr); else attroff(baseAttr); 547 | 548 | // 3) HUD at bottom if requested 549 | if (show_info) { 550 | const char *mm = 551 | (mask_mode == MASK_ALL) ? "mask:ALL" : 552 | (mask_mode == MASK_EDGES) ? "mask:EDGES" : "mask:OFF"; 553 | mvprintw(rows - 1, 0, 554 | "[q/ESC] FPS:%3d Speed:%3d Trail:%s%s Decay:%4.1fs Logo:%dx%d %s ", 555 | (int)(fps + 0.5), (int)(speed + 0.5), 556 | trail_enabled ? "ON" : "OFF", 557 | trail_enabled && t_decay <= 0.0 ? "(0s!)" : "", 558 | t_decay, LOGO.w, LOGO.h, mm); 559 | clrtoeol(); 560 | } 561 | 562 | refresh(); 563 | int ms = (int)(frame_s * 1000.0); if (ms < 1) ms = 1; 564 | napms(ms); 565 | } 566 | 567 | endwin(); 568 | ghosts_free(&ghosts); 569 | free_logo(&LOGO); 570 | return 0; 571 | } 572 | -------------------------------------------------------------------------------- /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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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 | 635 | Copyright (C) 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 | Copyright (C) 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 | --------------------------------------------------------------------------------