0.1.0-1-alpha.2

Tauri/game-reflex-poc/frontend/main.js

@@ -0,0 +1,76 @@
+// file: Tauri/game-reflex-poc/frontend/main.js
+// version: 1
+
+import init, { ReflexWasmGame } from "./game_reflex_poc_tauri.js";
+
+const FRAME_MS = 16;
+
+function color(red, green, blue) {
+  return `rgb(${red} ${green} ${blue})`;
+}
+
+function resizeCanvas(canvas) {
+  const ratio = window.devicePixelRatio || 1;
+  const width = Math.max(1, Math.floor(canvas.clientWidth * ratio));
+  const height = Math.max(1, Math.floor(canvas.clientHeight * ratio));
+  if (canvas.width !== width || canvas.height !== height) {
+    canvas.width = width;
+    canvas.height = height;
+  }
+}
+
+function render(game, canvas, context, score) {
+  resizeCanvas(canvas);
+  context.fillStyle = color(game.background_red(), game.background_green(), game.background_blue());
+  context.fillRect(0, 0, canvas.width, canvas.height);
+
+  const count = game.rectangle_count();
+  for (let index = 0; index < count; index += 1) {
+    context.fillStyle = color(game.rectangle_red(index), game.rectangle_green(index), game.rectangle_blue(index));
+    context.fillRect(
+      game.rectangle_x(index) * canvas.width,
+      game.rectangle_y(index) * canvas.height,
+      game.rectangle_width(index) * canvas.width,
+      game.rectangle_height(index) * canvas.height,
+    );
+  }
+
+  score.value = `Score : ${game.score()}`;
+}
+
+async function start() {
+  await init();
+
+  const canvas = document.querySelector("#game");
+  const score = document.querySelector("#score");
+  const context = canvas.getContext("2d");
+  if (!(canvas instanceof HTMLCanvasElement) || !(score instanceof HTMLOutputElement) || context === null) {
+    throw new Error("Reflex Tauri frontend DOM is incomplete");
+  }
+
+  const game = new ReflexWasmGame();
+  canvas.addEventListener("pointerdown", (event) => {
+    const bounds = canvas.getBoundingClientRect();
+    const x = (event.clientX - bounds.left) / bounds.width;
+    const y = (event.clientY - bounds.top) / bounds.height;
+    game.pointer_down(x, y);
+    render(game, canvas, context, score);
+  });
+
+  let previous = performance.now();
+  function frame(now) {
+    while (now - previous >= FRAME_MS) {
+      game.tick();
+      previous += FRAME_MS;
+    }
+    render(game, canvas, context, score);
+    window.requestAnimationFrame(frame);
+  }
+
+  render(game, canvas, context, score);
+  window.requestAnimationFrame(frame);
+}
+
+start().catch((error) => {
+  console.error("Reflex Tauri WASM startup failed", error);
+});