Factor out displaySwapBackImageData()

tsoding · Jul 4, 2024 · 8be0a19 · 8be0a19
1 parent a444eed
commit 8be0a19
Show file tree

Hide file tree

Showing 2 changed files with 11 additions and 5 deletions.
diff --git a/game.js b/game.js
diff --git a/game.ts b/game.ts
@@ -534,6 +534,11 @@ interface Display {
     zBuffer: Array<number>;
 }
 
+function displaySwapBackImageData(display: Display) {
+    display.backCtx.putImageData(display.backImageData, 0, 0);
+    display.ctx.drawImage(display.backCtx.canvas, 0, 0, display.ctx.canvas.width, display.ctx.canvas.height);
+}
+
 export interface Sprite {
     imageData: ImageData;
     position: Vector2;
@@ -624,9 +629,7 @@ export function renderGame(display: Display, deltaTime: number, player: Player,
     renderCeiling(display.backImageData, player);
     renderWalls(display, player, scene);
     renderSprites(display, player, sprites);
-    display.backCtx.putImageData(display.backImageData, 0, 0);
-    display.ctx.drawImage(display.backCtx.canvas, 0, 0, display.ctx.canvas.width, display.ctx.canvas.height);
-
+    displaySwapBackImageData(display);
 
     renderMinimap(display.ctx, player, scene, sprites);
     renderFPS(display.ctx, deltaTime);