first commit

assets/scripts/Board.ts

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+import { _decorator, Node, Prefab, instantiate, SpriteFrame, tween, Vec3, Sprite } from "cc";
+import { Fruit } from "./Fruit";
+import { FruitNode } from "./FruitNode";
+const { ccclass, property } = _decorator;
+
+@ccclass("Board")
+export class Board extends Node {
+    @property(Prefab) fruitPrefab: Prefab = null!;
+    @property([SpriteFrame]) fruitSprites: SpriteFrame[] = [];
+
+    board: (Fruit | null)[][] = [];
+    rows = 4;
+    cols = 4;
+
+    node: Node = null!;
+
+    onLoad() {
+        this.initBoard();
+    }
+
+    initBoard() {
+        this.board = [];
+        for (let r = 0; r < this.rows; r++) {
+            this.board[r] = [];
+            for (let c = 0; c < this.cols; c++) {
+                this.board[r][c] = null;
+            }
+        }
+        this.spawnFruit();
+        this.spawnFruit();
+    }
+
+    spawnFruit() {
+        let emptyCells: { r: number; c: number }[] = [];
+        for (let r = 0; r < this.rows; r++) {
+            for (let c = 0; c < this.cols; c++) {
+                if (!this.board[r][c]) emptyCells.push({ r, c });
+            }
+        }
+        if (emptyCells.length === 0) return;
+
+        let index = Math.floor(Math.random() * emptyCells.length);
+        let cell = emptyCells[index];
+
+        let node = instantiate(this.fruitPrefab);
+        node.setParent(this.node);
+        node.setPosition(new Vec3(cell.c * 100, cell.r * -100, 0));
+
+        let fruit = new Fruit(node, cell.r, cell.c, 1);
+        node.getComponent(FruitNode)!.init(fruit, this);
+        node.getComponent(Sprite)!.spriteFrame = this.fruitSprites[0];
+
+        this.board[cell.r][cell.c] = fruit;
+    }
+
+    merge(f1: Fruit, f2: Fruit) {
+        if (f1.level !== f2.level) return;
+        f1.level += 1;
+
+        if (f1.level - 1 < this.fruitSprites.length)
+            f1.node.getComponent(Sprite)!.spriteFrame = this.fruitSprites[f1.level - 1];
+
+        this.playMergeAnimation(f1.node, f2.node);
+
+        this.board[f2.row][f2.col] = null;
+        f2.node.destroy();
+
+        this.spawnFruit();
+    }
+
+    playMergeAnimation(n1: Node, n2: Node) {
+        // tween(n1)
+        //     .to(0.2, { scale: 1.2 })
+        //     .to(0.1, { scale: 1 })
+        //     .start();
+    }
+}