Port SceneLocal

src/igua/core/scene-local.ts

@@ -0,0 +1,16 @@
+import { scene } from "../globals";
+import { IguaScene } from "../igua-scene-stack";
+
+let idSource = 0;
+
+export class SceneLocal<T> {
+    constructor(private readonly _factory: (scene: IguaScene) => T, private readonly _sceneUniqueKey = `Anonymous@${idSource++}`) { }
+
+    get value(): T {
+        const value = scene.locals[this._sceneUniqueKey];
+        if (value)
+            return value;
+
+        return scene.locals[this._sceneUniqueKey] = this._factory(scene);
+    }
+}

src/igua/igua-scene-stack.ts

@@ -22,10 +22,11 @@ function createIguaScene(layers: IguaLayers, source: Function, meta: IguaSceneMe
     const backgroundGfx = new Graphics().tinted(0x000000).beginFill(0xffffff).drawRect(0, 0, 256, 256).show(background);
 
     return {
-        root,
         set backgroundTint(tint: number) {
             backgroundGfx.tint = tint;
         },
+        locals: {} as Record<string, any>,
+        root,
         source,
         stage,
         ticker,

src/igua/scenes/game.ts

@@ -19,11 +19,14 @@ import { IguanaLooks } from "../iguana/looks";
 import { lerp } from "../../lib/game-engine/promise/lerp";
 import { createDebugPanel } from "../../lib/game-engine/debug/debug-panel";
 import { approachLinear } from "../../lib/math/number";
+import { SceneLocal } from "../core/scene-local";
 
 const TailTextures = Tx.Iguana.Tail.split({ width: 28, trimFrame: true });
 
 const BigKeyTextures = Tx.BigKey1.split({ count: 3, trimFrame: true });
 
+const Score = new SceneLocal(() => ({ current: 0 }));
+
 export function SceneTest() {
     console.log('Scene', scene.source.name);
 
@@ -101,10 +104,14 @@ export function SceneTest() {
             for (const collided of guy.collidesAll(sprites)) {
                 collided.tint = tint;
             }
-            if (guy.collides(s))
+            if (guy.collides(s)) {
                 s.destroy();
-            if (guy.collides(smiley))
+                Score.value.current += 1;
+            }
+            if (guy.collides(smiley)) {
                 smiley.destroy();
+                Score.value.current += 1;
+            }
 
             guy.health += 1;
         })
@@ -308,5 +315,14 @@ export function SceneTest() {
 
     scene.backgroundTint = 0x181050;
 
+    objScore().at(4, 242).show();
+
     // document.body.appendChild(createDebugPanel(scene.stage));
 }
+
+function objScore() {
+    const score = objText.Large('Score: 0', { tint: 0x00ff00 })
+        .step(() => score.text = `Score: ${Score.value.current}`);
+
+    return score;
+}