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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477
src/main.zig
477
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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@ -42,7 +47,7 @@ const stdin = std.io.getStdIn().reader();
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///////////////////////////////////
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//// consts, vars, settings
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var rand:std.rand.Random = undefined;
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var rand: std.rand.Random = undefined;
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//// functions
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@ -59,14 +64,16 @@ 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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const sz = stdout.write(s) catch unreachable;
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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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// format a string then print
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pub fn emit_fmt(comptime s: []const u8, args: anytype) void {
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const t=std.fmt.allocPrint(allocator,s,args) catch unreachable;
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const t = std.fmt.allocPrint(allocator, s, args) catch unreachable;
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defer allocator.free(t);
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emit(t);
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}
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@ -77,63 +84,63 @@ 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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var term_sz:TermSz = .{ .height=0, .width=0 }; // set via initTermSz
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var term_sz: TermSz = .{ .height = 0, .width = 0 }; // set via initTermSz
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//ansi escape codes
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const esc = "\x1B";
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const csi = esc++"[";
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const csi = esc ++ "[";
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const cursor_save=esc++"7";
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const cursor_load=esc++"8";
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const cursor_save = esc ++ "7";
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const cursor_load = esc ++ "8";
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const cursor_show=csi++"?25h"; //h=high
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const cursor_hide=csi++"?25l"; //l=low
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const cursor_home=csi++"1;1H"; //1,1
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const cursor_show = csi ++ "?25h"; //h=high
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const cursor_hide = csi ++ "?25l"; //l=low
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const cursor_home = csi ++ "1;1H"; //1,1
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const screen_clear=csi++"2J";
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const screen_buf_on=csi++"?1049h"; //h=high
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const screen_buf_off=csi++"?1049l"; //l=low
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const screen_clear = csi ++ "2J";
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const screen_buf_on = csi ++ "?1049h"; //h=high
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const screen_buf_off = csi ++ "?1049l"; //l=low
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const line_clear_to_eol=csi++"0K";
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const line_clear_to_eol = csi ++ "0K";
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const color_reset=csi++"0m";
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const color_fg="38;5;";
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const color_bg="48;5;";
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const color_reset = csi ++ "0m";
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const color_fg = "38;5;";
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const color_bg = "48;5;";
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const color_fg_def=csi++color_fg++"15m"; // white
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const color_bg_def=csi++color_bg++"0m"; // black
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const color_def=color_bg_def++color_fg_def;
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const color_italic=csi++"3m";
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const color_not_italic=csi++"23m";
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const color_fg_def = csi ++ color_fg ++ "15m"; // white
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const color_bg_def = csi ++ color_bg ++ "0m"; // black
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const color_def = color_bg_def ++ color_fg_def;
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const color_italic = csi ++ "3m";
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const color_not_italic = csi ++ "23m";
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const term_on=screen_buf_on++cursor_hide++cursor_home++screen_clear++color_def;
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const term_off=screen_buf_off++cursor_show++nl;
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const term_on = screen_buf_on ++ cursor_hide ++ cursor_home ++ screen_clear ++ color_def;
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const term_off = screen_buf_off ++ cursor_show ++ nl;
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//handy characters
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const nl="\n";
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const sep='▏';
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const nl = "\n";
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const sep = '▏';
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//colors
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const MAX_COLOR=256;
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const LAST_COLOR=MAX_COLOR-1;
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const MAX_COLOR = 256;
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const LAST_COLOR = MAX_COLOR - 1;
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var fg:[MAX_COLOR][]u8 = undefined;
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var bg:[MAX_COLOR][]u8 = undefined;
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var fg: [MAX_COLOR][]u8 = undefined;
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var bg: [MAX_COLOR][]u8 = undefined;
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//// functions
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// cache fg/bg ansi codes
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pub fn initColor() void {
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var color_idx:u16=0;
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while (color_idx<MAX_COLOR) {
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fg[color_idx]=std.fmt.allocPrint(allocator,"{s}38;5;{d}m",.{csi,color_idx}) catch unreachable;
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bg[color_idx]=std.fmt.allocPrint(allocator,"{s}48;5;{d}m",.{csi,color_idx}) catch unreachable;
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color_idx+=1;
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var color_idx: u16 = 0;
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while (color_idx < MAX_COLOR) {
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fg[color_idx] = std.fmt.allocPrint(allocator, "{s}38;5;{d}m", .{ csi, color_idx }) catch unreachable;
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bg[color_idx] = std.fmt.allocPrint(allocator, "{s}48;5;{d}m", .{ csi, color_idx }) catch unreachable;
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color_idx += 1;
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}
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}
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@ -142,18 +149,20 @@ 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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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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// 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) {
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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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term_sz=try getTermSz(stdout.context.handle);
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term_sz = try getTermSz(stdout.context.handle);
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}
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pub fn initTerm() !void {
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@ -179,7 +188,7 @@ pub fn pause() void {
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emit(color_reset);
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emit("Press return to continue...");
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var b:u8 = undefined;
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var b: u8 = undefined;
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b = stdin.readByte() catch undefined;
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if (b == 'q') {
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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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@ -198,28 +206,38 @@ pub fn pause() void {
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// do nothing if term sz is big enough
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pub fn checkTermSz() void {
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const min_w=120;
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const min_h=22;
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var w_ok=true;
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var h_ok=true;
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const min_w = 120;
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const min_h = 22;
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var w_ok = true;
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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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@ -244,14 +262,13 @@ 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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emit_fmt("Screen size: {d}w x {d}h\n\n", .{ term_sz.width, term_sz.height });
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}
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pub fn showLabel(label:[]const u8) void {
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emit_fmt("{s}{s}:\n",.{color_def,label});
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pub fn showLabel(label: []const u8) void {
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emit_fmt("{s}{s}:\n", .{ color_def, label });
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}
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pub fn showStdColors() void {
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@ -259,23 +276,26 @@ pub fn showStdColors() void {
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//first 8 colors (standard)
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emit(fg[15]);
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var color_idx:u8=0;
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while (color_idx<8) {
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defer color_idx+=1;
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var color_idx: u8 = 0;
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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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emit_fmt("{u} {d:2} ", .{sep,color_idx});
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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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//next 8 colors ("hilight")
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emit(fg[15]);
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while (color_idx<16) {
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defer color_idx+=1;
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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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emit_fmt("{u} {d:2} ", .{sep,color_idx});
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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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@ -285,37 +305,36 @@ pub fn showStdColors() void {
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pub fn show216Colors() void {
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showLabel("216 colors");
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var color_addendum:u8=0;
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var bg_idx:u8=0;
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var fg_idx:u8=0;
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var color_addendum: u8 = 0;
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var bg_idx: u8 = 0;
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var fg_idx: u8 = 0;
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//show remaining of colors in 6 blocks of 6x6
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// 6 rows of color
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var color_shift:u8=0;
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while (color_shift<6) {
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defer color_shift+=1;
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var color_shift: u8 = 0;
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while (color_shift < 6) {
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defer color_shift += 1;
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color_addendum=color_shift*36+16;
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color_addendum = color_shift * 36 + 16;
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// colors are pre-organized into blocks
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var color_idx:u8=0;
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while(color_idx<36) {
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defer color_idx+=1;
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bg_idx=color_idx+color_addendum;
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var color_idx: u8 = 0;
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while (color_idx < 36) {
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defer color_idx += 1;
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bg_idx = color_idx + color_addendum;
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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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fg_idx=15;
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if (color_idx > 17) {
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fg_idx = 0;
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} else {
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fg_idx = 15;
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}
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// display color
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emit(bg[bg_idx]);
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emit(fg[fg_idx]);
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emit_fmt("{d:3}",.{bg_idx});
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emit_fmt("{d:3}", .{bg_idx});
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}
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emit(nl);
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}
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@ -325,20 +344,20 @@ pub fn show216Colors() void {
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pub fn showGrayscale() void {
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showLabel("Grayscale");
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var fg_idx:u8=15;
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var fg_idx: u8 = 15;
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emit(fg[fg_idx]);
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var bg_idx:u16=232;
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while (bg_idx<256) {
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defer bg_idx+=1;
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var bg_idx: u16 = 232;
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while (bg_idx < 256) {
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defer bg_idx += 1;
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if (bg_idx>243) {
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fg_idx=0;
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if (bg_idx > 243) {
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fg_idx = 0;
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emit(fg[fg_idx]);
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}
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emit(bg[bg_idx]);
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emit_fmt("{u}{d} ",.{sep,bg_idx});
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emit_fmt("{u}{d} ", .{ sep, bg_idx });
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}
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emit(nl);
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@ -349,9 +368,9 @@ pub fn showGrayscale() void {
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pub fn scrollMarquee() void {
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//marquee - 4 lines of yellowish background
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const bg_idx:u8=222;
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const marquee_row=line_clear_to_eol++nl;
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const marquee_bg=marquee_row++marquee_row++marquee_row++marquee_row;
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const bg_idx: u8 = 222;
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const marquee_row = line_clear_to_eol ++ nl;
|
||||
const marquee_bg = marquee_row ++ marquee_row ++ marquee_row ++ marquee_row;
|
||||
|
||||
//init marquee background
|
||||
emit(cursor_save);
|
||||
|
|
@ -359,31 +378,23 @@ pub fn scrollMarquee() void {
|
|||
emit(marquee_bg);
|
||||
|
||||
//quotes - will confirm animations are working on current terminal
|
||||
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};
|
||||
const txt_len:u8 = txt.len/2; // print two rows at a time
|
||||
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 };
|
||||
const txt_len: u8 = txt.len / 2; // print two rows at a time
|
||||
|
||||
//fade txt in and out
|
||||
const fade_seq=[_]u8{222,221,220,215,214,184,178,130,235,58,16};
|
||||
const fade_len:u8=fade_seq.len;
|
||||
const fade_seq = [_]u8{ 222, 221, 220, 215, 214, 184, 178, 130, 235, 58, 16 };
|
||||
const fade_len: u8 = fade_seq.len;
|
||||
|
||||
var fade_idx:u8=0;
|
||||
var txt_idx:u8=0;
|
||||
var fade_idx: u8 = 0;
|
||||
var txt_idx: u8 = 0;
|
||||
|
||||
while (txt_idx<txt_len) {
|
||||
defer txt_idx+=1;
|
||||
while (txt_idx < txt_len) {
|
||||
defer txt_idx += 1;
|
||||
|
||||
//fade in
|
||||
fade_idx=0;
|
||||
while (fade_idx<fade_len) {
|
||||
defer fade_idx+=1;
|
||||
fade_idx = 0;
|
||||
while (fade_idx < fade_len) {
|
||||
defer fade_idx += 1;
|
||||
|
||||
//reset to 1,1 of marquee
|
||||
emit(cursor_load);
|
||||
|
|
@ -392,10 +403,10 @@ pub fn scrollMarquee() void {
|
|||
|
||||
//print marquee txt
|
||||
emit(fg[fade_seq[fade_idx]]);
|
||||
emit(txt[txt_idx*2]);
|
||||
emit(txt[txt_idx * 2]);
|
||||
emit(line_clear_to_eol);
|
||||
emit(nl);
|
||||
emit(txt[txt_idx*2+1]);
|
||||
emit(txt[txt_idx * 2 + 1]);
|
||||
emit(line_clear_to_eol);
|
||||
emit(nl);
|
||||
|
||||
|
|
@ -405,11 +416,10 @@ pub fn scrollMarquee() void {
|
|||
//let quote chill for a second
|
||||
std.time.sleep(1000 * std.time.ns_per_ms);
|
||||
|
||||
|
||||
//fade out
|
||||
fade_idx=fade_len-1;
|
||||
while (fade_idx>0) {
|
||||
defer fade_idx-=1;
|
||||
fade_idx = fade_len - 1;
|
||||
while (fade_idx > 0) {
|
||||
defer fade_idx -= 1;
|
||||
|
||||
//reset to 1,1 of marquee
|
||||
emit(cursor_load);
|
||||
|
|
@ -418,10 +428,10 @@ pub fn scrollMarquee() void {
|
|||
|
||||
//print marquee txt
|
||||
emit(fg[fade_seq[fade_idx]]);
|
||||
emit(txt[txt_idx*2]);
|
||||
emit(txt[txt_idx * 2]);
|
||||
emit(line_clear_to_eol);
|
||||
emit(nl);
|
||||
emit(txt[txt_idx*2+1]);
|
||||
emit(txt[txt_idx * 2 + 1]);
|
||||
emit(line_clear_to_eol);
|
||||
emit(nl);
|
||||
std.time.sleep(10 * std.time.ns_per_ms);
|
||||
|
|
@ -446,109 +456,112 @@ pub fn showTermCap() void {
|
|||
/// Below - moderately faster
|
||||
|
||||
//pixel character
|
||||
const px="▀";
|
||||
const px = "▀";
|
||||
|
||||
//bs = buffer string
|
||||
var bs:[]u8=undefined;
|
||||
var bs_idx:u32=0;
|
||||
var bs_len:u32=0;
|
||||
var bs_sz_min:u32=0;
|
||||
var bs_sz_max:u32=0;
|
||||
var bs_sz_avg:u32=0;
|
||||
var bs_frame_tic:u32=0;
|
||||
var t_start:i64=0;
|
||||
var t_now:i64=0;
|
||||
var t_dur:f64=0.0;
|
||||
var fps:f64=0.0;
|
||||
|
||||
var bs: []u8 = undefined;
|
||||
var bs_idx: u32 = 0;
|
||||
var bs_len: u32 = 0;
|
||||
var bs_sz_min: u32 = 0;
|
||||
var bs_sz_max: u32 = 0;
|
||||
var bs_sz_avg: u32 = 0;
|
||||
var bs_frame_tic: u32 = 0;
|
||||
var t_start: i64 = 0;
|
||||
var t_now: i64 = 0;
|
||||
var t_dur: f64 = 0.0;
|
||||
var fps: f64 = 0.0;
|
||||
|
||||
pub fn initBuf() void {
|
||||
//some lazy guesswork to make sure we have enough of a buffer to render DOOM fire.
|
||||
const px_char_sz=px.len;
|
||||
const px_color_sz=bg[LAST_COLOR].len+fg[LAST_COLOR].len;
|
||||
const px_sz=px_color_sz+px_char_sz;
|
||||
const screen_sz:u64=@as(u64,px_sz*term_sz.width*term_sz.width);
|
||||
const overflow_sz:u64=px_char_sz*100;
|
||||
const bs_sz:u64=screen_sz+overflow_sz;
|
||||
const px_char_sz = px.len;
|
||||
const px_color_sz = bg[LAST_COLOR].len + fg[LAST_COLOR].len;
|
||||
const px_sz = px_color_sz + px_char_sz;
|
||||
const screen_sz: u64 = @as(u64, px_sz * term_sz.width * term_sz.width);
|
||||
const overflow_sz: u64 = px_char_sz * 100;
|
||||
const bs_sz: u64 = screen_sz + overflow_sz;
|
||||
|
||||
bs=allocator.alloc(u8,bs_sz*2) catch unreachable;
|
||||
t_start=std.time.milliTimestamp();
|
||||
bs = allocator.alloc(u8, bs_sz * 2) catch unreachable;
|
||||
t_start = std.time.milliTimestamp();
|
||||
resetBuf();
|
||||
}
|
||||
|
||||
//reset buffer indexes to start of buffer
|
||||
pub fn resetBuf() void {
|
||||
bs_idx=0;
|
||||
bs_len=0;
|
||||
bs_idx = 0;
|
||||
bs_len = 0;
|
||||
}
|
||||
|
||||
//copy input string to buffer string
|
||||
pub fn drawBuf(s:[]const u8) void {
|
||||
pub fn drawBuf(s: []const u8) void {
|
||||
for (s) |b| {
|
||||
bs[bs_idx] = b;
|
||||
bs_idx+=1;
|
||||
bs_len+=1;
|
||||
}
|
||||
bs_idx += 1;
|
||||
bs_len += 1;
|
||||
}
|
||||
}
|
||||
|
||||
//print buffer to string...can be a decent amount of text!
|
||||
pub fn paintBuf() void {
|
||||
emit(bs[0..bs_len-1]);
|
||||
t_now=std.time.milliTimestamp();
|
||||
bs_frame_tic+=1;
|
||||
if (bs_sz_min==0) {
|
||||
emit(bs[0 .. bs_len - 1]);
|
||||
t_now = std.time.milliTimestamp();
|
||||
bs_frame_tic += 1;
|
||||
if (bs_sz_min == 0) {
|
||||
//first frame
|
||||
bs_sz_min=bs_len;
|
||||
bs_sz_max=bs_len;
|
||||
bs_sz_avg=bs_len;
|
||||
bs_sz_min = bs_len;
|
||||
bs_sz_max = bs_len;
|
||||
bs_sz_avg = bs_len;
|
||||
} else {
|
||||
if (bs_len < bs_sz_min) {
|
||||
bs_sz_min = bs_len;
|
||||
}
|
||||
else {
|
||||
if( bs_len < bs_sz_min) { bs_sz_min=bs_len; }
|
||||
if( bs_len > bs_sz_max) { bs_sz_max=bs_len; }
|
||||
bs_sz_avg=bs_sz_avg*(bs_frame_tic-1)/bs_frame_tic+bs_len/bs_frame_tic;
|
||||
if (bs_len > bs_sz_max) {
|
||||
bs_sz_max = bs_len;
|
||||
}
|
||||
bs_sz_avg = bs_sz_avg * (bs_frame_tic - 1) / bs_frame_tic + bs_len / bs_frame_tic;
|
||||
}
|
||||
|
||||
t_dur=@intToFloat(f64,t_now-t_start)/1000.0;
|
||||
fps=@intToFloat(f64,bs_frame_tic)/t_dur;
|
||||
t_dur = @intToFloat(f64, t_now - t_start) / 1000.0;
|
||||
fps = @intToFloat(f64, bs_frame_tic) / t_dur;
|
||||
|
||||
emit(fg[0]);
|
||||
emit_fmt("mem: {s:.2} min / {s:.2} avg / {s:.2} max [ {d:.2} fps ]",.{std.fmt.fmtIntSizeBin(bs_sz_min), std.fmt.fmtIntSizeBin(bs_sz_avg), std.fmt.fmtIntSizeBin(bs_sz_max), fps});
|
||||
emit_fmt("mem: {s:.2} min / {s:.2} avg / {s:.2} max [ {d:.2} fps ]", .{ std.fmt.fmtIntSizeBin(bs_sz_min), std.fmt.fmtIntSizeBin(bs_sz_avg), std.fmt.fmtIntSizeBin(bs_sz_max), fps });
|
||||
}
|
||||
|
||||
// initBuf(); defer freeBuf();
|
||||
pub fn freeBuf() void { allocator.free(bs); }
|
||||
|
||||
pub fn freeBuf() void {
|
||||
allocator.free(bs);
|
||||
}
|
||||
|
||||
pub fn showDoomFire() void {
|
||||
//term size => fire size
|
||||
const FIRE_H:u16=@intCast(u16,term_sz.height)*2;
|
||||
const FIRE_W:u16=@intCast(u16,term_sz.width);
|
||||
const FIRE_SZ:u16=FIRE_H*FIRE_W;
|
||||
const FIRE_LAST_ROW:u16=(FIRE_H-1)*FIRE_W;
|
||||
const FIRE_H: u16 = @intCast(u16, term_sz.height) * 2;
|
||||
const FIRE_W: u16 = @intCast(u16, term_sz.width);
|
||||
const FIRE_SZ: u16 = FIRE_H * FIRE_W;
|
||||
const FIRE_LAST_ROW: u16 = (FIRE_H - 1) * FIRE_W;
|
||||
|
||||
//colors - tinker w/palette as needed!
|
||||
const fire_palette=[_]u8{0,233,234,52,53,88,89,94,95,96,130,131,132,133,172,214,215,220,220,221,3,226,227,230,195,230};
|
||||
const fire_black:u8=0;
|
||||
const fire_white:u8=fire_palette.len-1;
|
||||
const fire_palette = [_]u8{ 0, 233, 234, 52, 53, 88, 89, 94, 95, 96, 130, 131, 132, 133, 172, 214, 215, 220, 220, 221, 3, 226, 227, 230, 195, 230 };
|
||||
const fire_black: u8 = 0;
|
||||
const fire_white: u8 = fire_palette.len - 1;
|
||||
|
||||
//screen buf default color is black
|
||||
var screen_buf:[]u8=undefined; //{fire_black}**FIRE_SZ;
|
||||
screen_buf=allocator.alloc(u8,FIRE_SZ) catch unreachable;
|
||||
var screen_buf: []u8 = undefined; //{fire_black}**FIRE_SZ;
|
||||
screen_buf = allocator.alloc(u8, FIRE_SZ) catch unreachable;
|
||||
defer allocator.free(screen_buf);
|
||||
|
||||
//init buffer
|
||||
var buf_idx:u16=0;
|
||||
while(buf_idx<FIRE_SZ) {
|
||||
defer buf_idx+=1;
|
||||
var buf_idx: u16 = 0;
|
||||
while (buf_idx < FIRE_SZ) {
|
||||
defer buf_idx += 1;
|
||||
|
||||
screen_buf[buf_idx]=fire_black;
|
||||
screen_buf[buf_idx] = fire_black;
|
||||
}
|
||||
|
||||
//last row is white...white is "fire source"
|
||||
buf_idx=0;
|
||||
while (buf_idx<FIRE_W) {
|
||||
defer buf_idx+=1;
|
||||
screen_buf[FIRE_LAST_ROW+buf_idx]=fire_white;
|
||||
buf_idx = 0;
|
||||
while (buf_idx < FIRE_W) {
|
||||
defer buf_idx += 1;
|
||||
screen_buf[FIRE_LAST_ROW + buf_idx] = fire_white;
|
||||
}
|
||||
|
||||
//reset terminal
|
||||
|
|
@ -559,60 +572,59 @@ pub fn showDoomFire() void {
|
|||
|
||||
//scope cache ////////////////////
|
||||
//scope cache - update fire buf
|
||||
var doFire_x:u16=0;
|
||||
var doFire_y:u16=0;
|
||||
var doFire_idx:u16=0;
|
||||
var doFire_x: u16 = 0;
|
||||
var doFire_y: u16 = 0;
|
||||
var doFire_idx: u16 = 0;
|
||||
|
||||
//scope cache - spread fire
|
||||
var spread_px:u8=0;
|
||||
var spread_rnd_idx:u8=0;
|
||||
var spread_dst:u16=0;
|
||||
var spread_px: u8 = 0;
|
||||
var spread_rnd_idx: u8 = 0;
|
||||
var spread_dst: u16 = 0;
|
||||
|
||||
//scope cache - frame reset
|
||||
const init_frame=std.fmt.allocPrint(allocator,"{s}{s}{s}",.{cursor_home,bg[0],fg[0]}) catch unreachable;
|
||||
const init_frame = std.fmt.allocPrint(allocator, "{s}{s}{s}", .{ cursor_home, bg[0], fg[0] }) catch unreachable;
|
||||
defer allocator.free(init_frame);
|
||||
|
||||
//scope cache - fire 2 screen buffer
|
||||
var frame_x:u16=0;
|
||||
var frame_y:u16=0;
|
||||
var px_hi:u8=fire_black;
|
||||
var px_lo:u8=fire_black;
|
||||
var px_prev_hi=px_hi;
|
||||
var px_prev_lo=px_lo;
|
||||
var frame_x: u16 = 0;
|
||||
var frame_y: u16 = 0;
|
||||
var px_hi: u8 = fire_black;
|
||||
var px_lo: u8 = fire_black;
|
||||
var px_prev_hi = px_hi;
|
||||
var px_prev_lo = px_lo;
|
||||
|
||||
//get to work!
|
||||
initBuf();
|
||||
defer freeBuf();
|
||||
|
||||
//when there is an ez way to poll for key stroke...do that. for now, ctrl+c!
|
||||
var ok=true;
|
||||
while(ok){
|
||||
var ok = true;
|
||||
while (ok) {
|
||||
|
||||
//update fire buf
|
||||
doFire_x=0;
|
||||
while(doFire_x<FIRE_W) {
|
||||
defer doFire_x+=1;
|
||||
doFire_x = 0;
|
||||
while (doFire_x < FIRE_W) {
|
||||
defer doFire_x += 1;
|
||||
|
||||
doFire_y=0;
|
||||
while(doFire_y<FIRE_H) {
|
||||
defer doFire_y+=1;
|
||||
doFire_y = 0;
|
||||
while (doFire_y < FIRE_H) {
|
||||
defer doFire_y += 1;
|
||||
|
||||
doFire_idx=doFire_y*FIRE_W+doFire_x;
|
||||
doFire_idx = doFire_y * FIRE_W + doFire_x;
|
||||
|
||||
//spread fire
|
||||
spread_px = screen_buf[doFire_idx];
|
||||
|
||||
//bounds checking
|
||||
if ( (spread_px==0) and (doFire_idx>=FIRE_W) ) {
|
||||
screen_buf[doFire_idx-FIRE_W]=0;
|
||||
}
|
||||
else {
|
||||
if ((spread_px == 0) and (doFire_idx >= FIRE_W)) {
|
||||
screen_buf[doFire_idx - FIRE_W] = 0;
|
||||
} else {
|
||||
spread_rnd_idx = rand.intRangeAtMost(u8, 0, 3);
|
||||
if (doFire_idx>=(spread_rnd_idx+1)) {
|
||||
spread_dst=doFire_idx-spread_rnd_idx+1;
|
||||
if (doFire_idx >= (spread_rnd_idx + 1)) {
|
||||
spread_dst = doFire_idx - spread_rnd_idx + 1;
|
||||
}
|
||||
if (( spread_dst>=FIRE_W ) and (spread_px > (spread_rnd_idx & 1))) {
|
||||
screen_buf[spread_dst-FIRE_W]=spread_px - (spread_rnd_idx & 1);
|
||||
if ((spread_dst >= FIRE_W) and (spread_px > (spread_rnd_idx & 1))) {
|
||||
screen_buf[spread_dst - FIRE_W] = spread_px - (spread_rnd_idx & 1);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -623,33 +635,33 @@ pub fn showDoomFire() void {
|
|||
drawBuf(init_frame);
|
||||
|
||||
// for each row
|
||||
frame_y=0;
|
||||
while (frame_y<FIRE_H) {
|
||||
defer frame_y+=2; // 'paint' two rows at a time because of half height char
|
||||
frame_y = 0;
|
||||
while (frame_y < FIRE_H) {
|
||||
defer frame_y += 2; // 'paint' two rows at a time because of half height char
|
||||
|
||||
// for each col
|
||||
frame_x=0;
|
||||
while (frame_x<FIRE_W) {
|
||||
defer frame_x+=1;
|
||||
frame_x = 0;
|
||||
while (frame_x < FIRE_W) {
|
||||
defer frame_x += 1;
|
||||
|
||||
//each character rendered is actually to rows of 'pixels'
|
||||
// - "hi" (current px row => fg char)
|
||||
// - "low" (next row => bg color)
|
||||
px_hi=screen_buf[frame_y*FIRE_W+frame_x];
|
||||
px_lo=screen_buf[(frame_y+1)*FIRE_W+frame_x];
|
||||
px_hi = screen_buf[frame_y * FIRE_W + frame_x];
|
||||
px_lo = screen_buf[(frame_y + 1) * FIRE_W + frame_x];
|
||||
|
||||
// only *update* color if prior color is actually diff
|
||||
if (px_lo!=px_prev_lo) {
|
||||
if (px_lo != px_prev_lo) {
|
||||
drawBuf(bg[fire_palette[px_lo]]);
|
||||
}
|
||||
if (px_hi!=px_prev_hi) {
|
||||
if (px_hi != px_prev_hi) {
|
||||
drawBuf(fg[fire_palette[px_hi]]);
|
||||
}
|
||||
drawBuf(px);
|
||||
|
||||
//cache current colors
|
||||
px_prev_hi=px_hi;
|
||||
px_prev_lo=px_lo;
|
||||
px_prev_hi = px_hi;
|
||||
px_prev_lo = px_lo;
|
||||
}
|
||||
drawBuf(nl); //is this needed?
|
||||
}
|
||||
|
|
@ -669,5 +681,4 @@ pub fn main() anyerror!void {
|
|||
checkTermSz();
|
||||
showTermCap();
|
||||
showDoomFire();
|
||||
|
||||
}
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue