45 lines
1.7 KiB
TypeScript
45 lines
1.7 KiB
TypeScript
// file: Web/game-snake-poc/frontend/ts/main.ts
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// version: 1
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import { startGame } from "./game";
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import { bindInputs } from "./input";
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function requireElement<T extends Element>(selector: string): T {
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const element = document.querySelector<T>(selector);
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if (element === null) {
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throw new Error(`Élément frontend requis absent : ${selector}`);
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}
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return element;
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}
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async function main(): Promise<void> {
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const canvas = requireElement<HTMLCanvasElement>("#game");
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const score = requireElement<HTMLOutputElement>("#score");
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const length = requireElement<HTMLOutputElement>("#length");
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const status = requireElement<HTMLSpanElement>("#runtime-status");
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const error = requireElement<HTMLParagraphElement>("#startup-error");
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const buttons = Array.from(document.querySelectorAll<HTMLButtonElement>("[data-direction]"));
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status.textContent = "Chargement WASM…";
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const session = await startGame(canvas, score, length);
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bindInputs(session, buttons);
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status.className = "badge text-bg-success";
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status.textContent = "Prêt";
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error.hidden = true;
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canvas.focus();
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}
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void main().catch(caughtError => {
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const status = document.querySelector<HTMLSpanElement>("#runtime-status");
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const error = document.querySelector<HTMLParagraphElement>("#startup-error");
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const message = caughtError instanceof Error ? caughtError.message : String(caughtError);
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if (status !== null) {
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status.className = "badge text-bg-danger";
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status.textContent = "Erreur";
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}
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if (error !== null) {
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error.textContent = `Impossible de démarrer Snake : ${message}`;
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error.hidden = false;
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}
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});
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