mirror of
https://github.com/RGBCube/DOOM-fire-zig
synced 2025-07-27 17:17:45 +00:00
Make doomfire cross-platform
This commit is contained in:
Jacob Hinchliffe
parent
add37add17
commit
100a2abef5
3 changed files with 291 additions and 273 deletions
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@ -1,5 +1,5 @@
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# DOOMFIRE
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Test your TTY might!
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## Test your TTY's might!
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@ -8,7 +8,10 @@ The doom-fire algo can push upwards of 180k a frame - results may vary! It is,
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As a comparable, this is the younger sibling of a node variant ( https://github.com/const-void/DOOM-fire-node ).
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# INSTALL
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Tested on OX Monterey / M1 w/zig 0.9...unsure if it will work on Win or Linux, sadly, due to TIOCGWINSZ flag. No third party dependencies!
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Tested on OX Monterey / M1 w/zig 0.9...
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EDIT: Now tested on Artix Linux - links against libc to get the size of the TTY.
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```
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$ git clone https://github.com/const-void/DOOM-fire-zig/
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@ -22,6 +25,7 @@ $ zig build run
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* kitty.app - great
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* Terminal.app - poor -- seems to drop framerates
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* VS Code - great
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* Alacritty (artix linux) - great
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# Inspiration / Credits
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* doom fire - https://github.com/filipedeschamps/doom-fire-algorithm, https://github.com/fabiensanglard/DoomFirePSX/blob/master/flames.html
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@ -12,6 +12,9 @@ pub fn build(b: *std.build.Builder) void {
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const mode = b.standardReleaseOptions();
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const exe = b.addExecutable("DOOM-fire", "src/main.zig");
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exe.addIncludeDir("src");
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exe.linkLibC();
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exe.setTarget(target);
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exe.setBuildMode(mode);
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exe.install();
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99
src/main.zig
99
src/main.zig
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@ -5,13 +5,18 @@
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//
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const std = @import("std");
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// Gets the correct TIOCGWINSZ value from libc.
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const c = @cImport({
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@cInclude("sys/ioctl.h");
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});
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const allocator = std.heap.page_allocator;
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const stdout = std.io.getStdOut().writer();
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const stdin = std.io.getStdIn().reader();
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///////////////////////////////////
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// Tested on M1 osx12.1
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// Tested on M1 osx12.1 + Linux
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// fast - vs code terminal
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// slow - Terminal.app
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///////////////////////////////////
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@ -60,7 +65,9 @@ pub fn initRNG() !void {
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// print
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pub fn emit(s: []const u8) void {
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const sz = stdout.write(s) catch unreachable;
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if (sz==0) {return;} // cauze I c
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if (sz == 0) {
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return;
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} // cauze I c
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return;
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}
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@ -77,8 +84,8 @@ pub fn emit_fmt(comptime s: []const u8, args: anytype) void {
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//// Settings
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//OSX specific ... maybe
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const TIOCGWINSZ=0x40087468; //ioctl flag
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// Get this from libc instead of some random value.
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const TIOCGWINSZ = c.TIOCGWINSZ;
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//term size
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const TermSz = struct { height: usize, width: usize };
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@ -142,14 +149,16 @@ pub fn initColor() void {
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//get terminal size given a tty
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pub fn getTermSz(tty: std.os.fd_t) !TermSz {
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var winsz = std.os.system.winsize {
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.ws_col=0, .ws_row=0,
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.ws_xpixel=0, .ws_ypixel=0
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};
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// Get this struct from libc instead of Zig's std. I shall add this struct regardless so you can call std.os.system.winsize.
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// This is hacky and bad.
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var winsz = c.winsize{ .ws_col = 0, .ws_row = 0, .ws_xpixel = 0, .ws_ypixel = 0 };
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const rv = std.os.system.ioctl(tty, TIOCGWINSZ, @ptrToInt(&winsz));
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const err = std.os.errno(rv);
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if (rv==0) { return TermSz{ .height = winsz.ws_row, .width = winsz.ws_col }; }
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else {return std.os.unexpectedErrno(err);}
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if (rv == 0) {
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return TermSz{ .height = winsz.ws_row, .width = winsz.ws_col };
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} else {
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return std.os.unexpectedErrno(err);
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}
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}
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pub fn initTermSize() !void {
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@ -189,7 +198,6 @@ pub fn pause() void {
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}
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}
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/// Part I - Terminal Size Check
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/// showTermCap() needs about 120x22; if screen is too small, give user a chance to abort and try again.
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///
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@ -204,22 +212,32 @@ pub fn checkTermSz() void {
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var h_ok = true;
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// chk cur < min
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if (term_sz.width<min_w) { w_ok=false; }
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if (term_sz.height<min_h) { h_ok=false; }
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if (term_sz.width < min_w) {
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w_ok = false;
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}
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if (term_sz.height < min_h) {
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h_ok = false;
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}
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if (w_ok and h_ok) { return; }
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else {
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if (w_ok and h_ok) {
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return;
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} else {
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//screen is too small
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//red text
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emit(fg[9]);
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//check conditions
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if (w_ok and !h_ok) { emit_fmt("Screen may be too short - height is {d} and need {d}.",.{term_sz.height, min_h}); }
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else if (!w_ok and h_ok) { emit_fmt("Screen may be too narrow - width is {d} and need {d}.",.{term_sz.width, min_w}); }
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else { emit_fmt("Screen is too small - have {d} x {d} and need {d} x {d}",.{term_sz.width, term_sz.height, min_w, min_h}); }
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if (w_ok and !h_ok) {
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emit_fmt("Screen may be too short - height is {d} and need {d}.", .{ term_sz.height, min_h });
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} else if (!w_ok and h_ok) {
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emit_fmt("Screen may be too narrow - width is {d} and need {d}.", .{ term_sz.width, min_w });
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} else {
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emit_fmt("Screen is too small - have {d} x {d} and need {d} x {d}", .{ term_sz.width, term_sz.height, min_w, min_h });
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}
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emit(nl);emit(nl);
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emit(nl);
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emit(nl);
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//warn user w/white on red
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emit(bg[1]);
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@ -244,7 +262,6 @@ pub fn checkTermSz() void {
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/// Since user terminals vary in capabilities, handy to have a screen that renders ACTUAL colors
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/// and exercises various terminal commands prior to DOOM fire.
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///
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pub fn showTermSz() void {
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//todo - show os, os ver, zig ver
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emit_fmt("Screen size: {d}w x {d}h\n\n", .{ term_sz.width, term_sz.height });
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@ -263,7 +280,9 @@ pub fn showStdColors() void {
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while (color_idx < 8) {
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defer color_idx += 1;
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emit(bg[color_idx]);
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if (color_idx==7) { emit(fg[0]); }
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if (color_idx == 7) {
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emit(fg[0]);
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}
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emit_fmt("{u} {d:2} ", .{ sep, color_idx });
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}
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emit(nl);
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@ -273,9 +292,10 @@ pub fn showStdColors() void {
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while (color_idx < 16) {
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defer color_idx += 1;
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emit(bg[color_idx]);
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if (color_idx==15) { emit(fg[0]); }
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if (color_idx == 15) {
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emit(fg[0]);
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}
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emit_fmt("{u} {d:2} ", .{ sep, color_idx });
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}
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emit(nl);
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@ -307,8 +327,7 @@ pub fn show216Colors() void {
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// invert color id for readability
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if (color_idx > 17) {
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fg_idx = 0;
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}
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else {
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} else {
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fg_idx = 15;
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}
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@ -359,15 +378,7 @@ pub fn scrollMarquee() void {
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emit(marquee_bg);
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//quotes - will confirm animations are working on current terminal
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const txt =[_][]const u8{
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" Things move along so rapidly nowadays that people saying "++color_italic++"It can't be done"++color_not_italic++" are always being interrupted",
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" by somebody doing it. "++color_italic++"-- Puck, 1902"++color_not_italic,
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" Test your might!",
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" "++color_italic++"-- Mortal Kombat"++color_not_italic,
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" How much is the fish?",
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" "++color_italic++"-- Scooter"++color_not_italic};
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const txt = [_][]const u8{ " Things move along so rapidly nowadays that people saying " ++ color_italic ++ "It can't be done" ++ color_not_italic ++ " are always being interrupted", " by somebody doing it. " ++ color_italic ++ "-- Puck, 1902" ++ color_not_italic, " Test your might!", " " ++ color_italic ++ "-- Mortal Kombat" ++ color_not_italic, " How much is the fish?", " " ++ color_italic ++ "-- Scooter" ++ color_not_italic };
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const txt_len: u8 = txt.len / 2; // print two rows at a time
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//fade txt in and out
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@ -405,7 +416,6 @@ pub fn scrollMarquee() void {
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//let quote chill for a second
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std.time.sleep(1000 * std.time.ns_per_ms);
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//fade out
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fade_idx = fade_len - 1;
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while (fade_idx > 0) {
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@ -461,7 +471,6 @@ var t_now:i64=0;
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var t_dur: f64 = 0.0;
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var fps: f64 = 0.0;
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pub fn initBuf() void {
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//some lazy guesswork to make sure we have enough of a buffer to render DOOM fire.
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const px_char_sz = px.len;
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@ -501,10 +510,13 @@ pub fn paintBuf() void {
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bs_sz_min = bs_len;
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bs_sz_max = bs_len;
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bs_sz_avg = bs_len;
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} else {
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if (bs_len < bs_sz_min) {
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bs_sz_min = bs_len;
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}
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if (bs_len > bs_sz_max) {
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bs_sz_max = bs_len;
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}
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else {
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if( bs_len < bs_sz_min) { bs_sz_min=bs_len; }
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if( bs_len > bs_sz_max) { bs_sz_max=bs_len; }
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bs_sz_avg = bs_sz_avg * (bs_frame_tic - 1) / bs_frame_tic + bs_len / bs_frame_tic;
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}
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@ -516,8 +528,9 @@ pub fn paintBuf() void {
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}
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// initBuf(); defer freeBuf();
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pub fn freeBuf() void { allocator.free(bs); }
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pub fn freeBuf() void {
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allocator.free(bs);
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}
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pub fn showDoomFire() void {
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//term size => fire size
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@ -605,8 +618,7 @@ pub fn showDoomFire() void {
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//bounds checking
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if ((spread_px == 0) and (doFire_idx >= FIRE_W)) {
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screen_buf[doFire_idx - FIRE_W] = 0;
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}
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else {
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} else {
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spread_rnd_idx = rand.intRangeAtMost(u8, 0, 3);
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if (doFire_idx >= (spread_rnd_idx + 1)) {
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spread_dst = doFire_idx - spread_rnd_idx + 1;
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@ -669,5 +681,4 @@ pub fn main() anyerror!void {
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checkTermSz();
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showTermCap();
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showDoomFire();
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}
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