refactor: move home fire to seperate file
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2 changed files with 127 additions and 122 deletions
126
src/tui/Fire.zig
Normal file
126
src/tui/Fire.zig
Normal file
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@ -0,0 +1,126 @@
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const std = @import("std");
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const Plane = @import("renderer").Plane;
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const Widget = @import("Widget.zig");
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const px = "▀";
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const Fire = @This();
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allocator: std.mem.Allocator,
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plane: Plane,
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prng: std.Random.DefaultPrng,
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//scope cache - spread fire
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spread_px: u8 = 0,
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spread_rnd_idx: u8 = 0,
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spread_dst: usize = 0,
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FIRE_H: u16,
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FIRE_W: u16,
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FIRE_SZ: usize,
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FIRE_LAST_ROW: usize,
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screen_buf: []u8,
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const MAX_COLOR = 256;
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const LAST_COLOR = MAX_COLOR - 1;
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pub fn init(allocator: std.mem.Allocator, plane: Plane) !Fire {
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const pos = Widget.Box.from(plane);
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const FIRE_H = @as(u16, @intCast(pos.h)) * 2;
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const FIRE_W = @as(u16, @intCast(pos.w));
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var self: Fire = .{
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.allocator = allocator,
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.plane = plane,
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.prng = std.Random.DefaultPrng.init(blk: {
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var seed: u64 = undefined;
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try std.posix.getrandom(std.mem.asBytes(&seed));
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break :blk seed;
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}),
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.FIRE_H = FIRE_H,
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.FIRE_W = FIRE_W,
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.FIRE_SZ = @as(usize, @intCast(FIRE_H)) * FIRE_W,
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.FIRE_LAST_ROW = @as(usize, @intCast(FIRE_H - 1)) * FIRE_W,
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.screen_buf = try allocator.alloc(u8, @as(usize, @intCast(FIRE_H)) * FIRE_W),
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};
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var buf_idx: usize = 0;
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while (buf_idx < self.FIRE_SZ) : (buf_idx += 1) {
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self.screen_buf[buf_idx] = fire_black;
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}
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// last row is white...white is "fire source"
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buf_idx = 0;
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while (buf_idx < self.FIRE_W) : (buf_idx += 1) {
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self.screen_buf[self.FIRE_LAST_ROW + buf_idx] = fire_white;
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}
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return self;
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}
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pub fn deinit(self: *Fire) void {
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self.allocator.free(self.screen_buf);
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}
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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 };
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const fire_black: u8 = 0;
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const fire_white: u8 = fire_palette.len - 1;
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pub fn render(self: *Fire) void {
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self.plane.home();
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var rand = self.prng.random();
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//update fire buf
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var doFire_x: u16 = 0;
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while (doFire_x < self.FIRE_W) : (doFire_x += 1) {
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var doFire_y: u16 = 0;
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while (doFire_y < self.FIRE_H) : (doFire_y += 1) {
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const doFire_idx = @as(usize, @intCast(doFire_y)) * self.FIRE_W + doFire_x;
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//spread fire
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self.spread_px = self.screen_buf[doFire_idx];
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//bounds checking
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if ((self.spread_px == 0) and (doFire_idx >= self.FIRE_W)) {
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self.screen_buf[doFire_idx - self.FIRE_W] = 0;
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} else {
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self.spread_rnd_idx = rand.intRangeAtMost(u8, 0, 3);
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if (doFire_idx >= (self.spread_rnd_idx + 1)) {
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self.spread_dst = doFire_idx - self.spread_rnd_idx + 1;
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} else {
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self.spread_dst = doFire_idx;
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}
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if (self.spread_dst >= self.FIRE_W) {
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if (self.spread_px > (self.spread_rnd_idx & 1)) {
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self.screen_buf[self.spread_dst - self.FIRE_W] = self.spread_px - (self.spread_rnd_idx & 1);
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} else {
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self.screen_buf[self.spread_dst - self.FIRE_W] = 0;
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}
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}
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}
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}
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}
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//scope cache - fire 2 screen buffer
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var frame_x: u16 = 0;
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var frame_y: u16 = 0;
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// for each row
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frame_y = 0;
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while (frame_y < self.FIRE_H) : (frame_y += 2) { // 'paint' two rows at a time because of half height char
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// for each col
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frame_x = 0;
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while (frame_x < self.FIRE_W) : (frame_x += 1) {
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//each character rendered is actually to rows of 'pixels'
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// - "hi" (current px row => fg char)
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// - "low" (next row => bg color)
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const px_hi = self.screen_buf[@as(usize, @intCast(frame_y)) * self.FIRE_W + frame_x];
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const px_lo = self.screen_buf[@as(usize, @intCast(frame_y + 1)) * self.FIRE_W + frame_x];
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self.plane.set_fg_palindex(fire_palette[px_hi]) catch {};
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self.plane.set_bg_palindex(fire_palette[px_lo]) catch {};
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_ = self.plane.putstr(px) catch {};
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}
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self.plane.cursor_move_yx(-1, 0) catch {};
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self.plane.cursor_move_rel(1, 0) catch {};
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}
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}
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123
src/tui/home.zig
123
src/tui/home.zig
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@ -285,125 +285,4 @@ const cmds = struct {
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pub const home_sheeran_meta = .{};
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};
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const Fire = struct {
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const px = "▀";
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allocator: std.mem.Allocator,
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plane: Plane,
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prng: std.Random.DefaultPrng,
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//scope cache - spread fire
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spread_px: u8 = 0,
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spread_rnd_idx: u8 = 0,
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spread_dst: usize = 0,
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FIRE_H: u16,
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FIRE_W: u16,
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FIRE_SZ: usize,
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FIRE_LAST_ROW: usize,
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screen_buf: []u8,
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const MAX_COLOR = 256;
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const LAST_COLOR = MAX_COLOR - 1;
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fn init(allocator: std.mem.Allocator, plane: Plane) !Fire {
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const pos = Widget.Box.from(plane);
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const FIRE_H = @as(u16, @intCast(pos.h)) * 2;
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const FIRE_W = @as(u16, @intCast(pos.w));
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var self: Fire = .{
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.allocator = allocator,
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.plane = plane,
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.prng = std.Random.DefaultPrng.init(blk: {
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var seed: u64 = undefined;
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try std.posix.getrandom(std.mem.asBytes(&seed));
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break :blk seed;
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}),
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.FIRE_H = FIRE_H,
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.FIRE_W = FIRE_W,
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.FIRE_SZ = @as(usize, @intCast(FIRE_H)) * FIRE_W,
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.FIRE_LAST_ROW = @as(usize, @intCast(FIRE_H - 1)) * FIRE_W,
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.screen_buf = try allocator.alloc(u8, @as(usize, @intCast(FIRE_H)) * FIRE_W),
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};
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var buf_idx: usize = 0;
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while (buf_idx < self.FIRE_SZ) : (buf_idx += 1) {
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self.screen_buf[buf_idx] = fire_black;
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}
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// last row is white...white is "fire source"
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buf_idx = 0;
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while (buf_idx < self.FIRE_W) : (buf_idx += 1) {
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self.screen_buf[self.FIRE_LAST_ROW + buf_idx] = fire_white;
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}
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return self;
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}
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fn deinit(self: *Fire) void {
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self.allocator.free(self.screen_buf);
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}
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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 };
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const fire_black: u8 = 0;
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const fire_white: u8 = fire_palette.len - 1;
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fn render(self: *Fire) void {
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self.plane.home();
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var rand = self.prng.random();
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//update fire buf
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var doFire_x: u16 = 0;
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while (doFire_x < self.FIRE_W) : (doFire_x += 1) {
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var doFire_y: u16 = 0;
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while (doFire_y < self.FIRE_H) : (doFire_y += 1) {
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const doFire_idx = @as(usize, @intCast(doFire_y)) * self.FIRE_W + doFire_x;
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//spread fire
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self.spread_px = self.screen_buf[doFire_idx];
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//bounds checking
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if ((self.spread_px == 0) and (doFire_idx >= self.FIRE_W)) {
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self.screen_buf[doFire_idx - self.FIRE_W] = 0;
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} else {
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self.spread_rnd_idx = rand.intRangeAtMost(u8, 0, 3);
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if (doFire_idx >= (self.spread_rnd_idx + 1)) {
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self.spread_dst = doFire_idx - self.spread_rnd_idx + 1;
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} else {
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self.spread_dst = doFire_idx;
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}
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if (self.spread_dst >= self.FIRE_W) {
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if (self.spread_px > (self.spread_rnd_idx & 1)) {
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self.screen_buf[self.spread_dst - self.FIRE_W] = self.spread_px - (self.spread_rnd_idx & 1);
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} else {
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self.screen_buf[self.spread_dst - self.FIRE_W] = 0;
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}
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}
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}
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}
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}
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//scope cache - fire 2 screen buffer
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var frame_x: u16 = 0;
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var frame_y: u16 = 0;
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// for each row
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frame_y = 0;
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while (frame_y < self.FIRE_H) : (frame_y += 2) { // 'paint' two rows at a time because of half height char
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// for each col
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frame_x = 0;
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while (frame_x < self.FIRE_W) : (frame_x += 1) {
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//each character rendered is actually to rows of 'pixels'
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// - "hi" (current px row => fg char)
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// - "low" (next row => bg color)
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const px_hi = self.screen_buf[@as(usize, @intCast(frame_y)) * self.FIRE_W + frame_x];
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const px_lo = self.screen_buf[@as(usize, @intCast(frame_y + 1)) * self.FIRE_W + frame_x];
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self.plane.set_fg_palindex(fire_palette[px_hi]) catch {};
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self.plane.set_bg_palindex(fire_palette[px_lo]) catch {};
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_ = self.plane.putstr(px) catch {};
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}
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self.plane.cursor_move_yx(-1, 0) catch {};
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self.plane.cursor_move_rel(1, 0) catch {};
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}
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}
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};
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const Fire = @import("Fire.zig");
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