File size: 3,645 Bytes
f500658 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 | /**
* DOOM Component for overlay mode
*
* Renders DOOM frames using half-block characters (▀) with 24-bit color.
* Height is calculated from width to maintain DOOM's aspect ratio.
*/
import type { Component } from "@earendil-works/pi-tui";
import { isKeyRelease, type TUI } from "@earendil-works/pi-tui";
import type { DoomEngine } from "./doom-engine.ts";
import { DoomKeys, mapKeyToDoom } from "./doom-keys.ts";
function renderHalfBlock(
rgba: Uint8Array,
width: number,
height: number,
targetCols: number,
targetRows: number,
): string[] {
const lines: string[] = [];
const scaleX = width / targetCols;
const scaleY = height / (targetRows * 2);
for (let row = 0; row < targetRows; row++) {
let line = "";
const srcY1 = Math.floor(row * 2 * scaleY);
const srcY2 = Math.floor((row * 2 + 1) * scaleY);
for (let col = 0; col < targetCols; col++) {
const srcX = Math.floor(col * scaleX);
const idx1 = (srcY1 * width + srcX) * 4;
const idx2 = (srcY2 * width + srcX) * 4;
const r1 = rgba[idx1] ?? 0,
g1 = rgba[idx1 + 1] ?? 0,
b1 = rgba[idx1 + 2] ?? 0;
const r2 = rgba[idx2] ?? 0,
g2 = rgba[idx2 + 1] ?? 0,
b2 = rgba[idx2 + 2] ?? 0;
line += `\x1b[38;2;${r1};${g1};${b1}m\x1b[48;2;${r2};${g2};${b2}m▀`;
}
line += "\x1b[0m";
lines.push(line);
}
return lines;
}
export class DoomOverlayComponent implements Component {
private engine: DoomEngine;
private tui: TUI;
private interval: ReturnType<typeof setInterval> | null = null;
private onExit: () => void;
// Opt-in to key release events for smooth movement
wantsKeyRelease = true;
constructor(tui: TUI, engine: DoomEngine, onExit: () => void, resume = false) {
this.tui = tui;
this.engine = engine;
this.onExit = onExit;
// Unpause if resuming
if (resume) {
this.engine.pushKey(true, DoomKeys.KEY_PAUSE);
this.engine.pushKey(false, DoomKeys.KEY_PAUSE);
}
this.startGameLoop();
}
private startGameLoop(): void {
this.interval = setInterval(() => {
try {
this.engine.tick();
this.tui.requestRender();
} catch {
// WASM error (e.g., exit via DOOM menu) - treat as quit
this.dispose();
this.onExit();
}
}, 1000 / 35);
}
handleInput(data: string): void {
// Q to pause and exit (but not on release)
if (!isKeyRelease(data) && (data === "q" || data === "Q")) {
// Send DOOM's pause key before exiting
this.engine.pushKey(true, DoomKeys.KEY_PAUSE);
this.engine.pushKey(false, DoomKeys.KEY_PAUSE);
this.dispose();
this.onExit();
return;
}
const doomKeys = mapKeyToDoom(data);
if (doomKeys.length === 0) return;
const released = isKeyRelease(data);
for (const key of doomKeys) {
this.engine.pushKey(!released, key);
}
}
render(width: number): string[] {
// DOOM renders at 640x400 (1.6:1 ratio)
// With half-block characters, each terminal row = 2 pixels
// So effective ratio is 640:200 = 3.2:1 (width:height in terminal cells)
// Add 1 row for footer
const ASPECT_RATIO = 3.2;
const MIN_HEIGHT = 10;
const height = Math.max(MIN_HEIGHT, Math.floor(width / ASPECT_RATIO));
const rgba = this.engine.getFrameRGBA();
const lines = renderHalfBlock(rgba, this.engine.width, this.engine.height, width, height);
// Footer
const footer = " DOOM | Q=Pause | WASD=Move | Shift+WASD=Run | Space=Use | F=Fire | 1-7=Weapons";
const truncatedFooter = footer.length > width ? footer.slice(0, width) : footer;
lines.push(`\x1b[2m${truncatedFooter}\x1b[0m`);
return lines;
}
invalidate(): void {}
dispose(): void {
if (this.interval) {
clearInterval(this.interval);
this.interval = null;
}
}
}
|