new structure, spawner, rebind

assets/Scripts/Game/Enemy/Enemy.ts

@@ -0,0 +1,45 @@
+import { BoxCollider2D, Component, _decorator } from "cc";
+import { ISignal } from "../../Services/EventSystem/ISignal";
+import { Signal } from "../../Services/EventSystem/Signal";
+import { UnitHealth } from "../Player/UnitHealth";
+const { ccclass, property } = _decorator;
+
+@ccclass("Enemy")
+export class Enemy extends Component implements IDamageDealing {
+    @property(BoxCollider2D) public collider: BoxCollider2D;
+
+    private health: UnitHealth = new UnitHealth(1);
+    private deathEvent: Signal<Enemy> = new Signal<Enemy>();
+
+    public setup(): void {
+        this.node.active = true;
+        this.health = new UnitHealth(1);
+    }
+
+    public get Collider(): BoxCollider2D {
+        return this.collider;
+    }
+
+    public get Damage(): number {
+        return 3;
+    }
+
+    public get Health(): UnitHealth {
+        return this.health;
+    }
+
+    public get DeathEvent(): ISignal<Enemy> {
+        return this.deathEvent;
+    }
+
+    public dealDamage(points: number): void {
+        this.health.damage(points);
+        if (!this.health.IsAlive) {
+            this.deathEvent.trigger(this);
+        }
+    }
+}
+
+export interface IDamageDealing {
+    Damage: number;
+}

assets/Scripts/Game/Enemy/Enemy.ts.meta

@@ -0,0 +1,9 @@
+{
+  "ver": "4.0.23",
+  "importer": "typescript",
+  "imported": true,
+  "uuid": "e6f969c0-2783-4eb3-b467-356c68db4512",
+  "files": [],
+  "subMetas": {},
+  "userData": {}
+}

assets/Scripts/Game/Enemy/EnemySpawner.ts

@@ -0,0 +1,41 @@
+import { Component, Prefab, randomRange, Vec3, _decorator } from "cc";
+import { GameTimer } from "../../Services/GameTimer";
+import { ObjectPool } from "../../Services/ObjectPool";
+import { Enemy } from "./Enemy";
+const { ccclass, property } = _decorator;
+
+@ccclass("EnemySpawner")
+export class EnemySpawner extends Component {
+    @property(Prefab) private enemies: Prefab[] = [];
+
+    private enemyPool: ObjectPool<Enemy>;
+    private spawnTimer: GameTimer;
+
+    public init(): void {
+        this.enemyPool = new ObjectPool(this.enemies[0], this.node, 5, Enemy);
+        this.spawnTimer = new GameTimer(5);
+    }
+
+    public gameTick(deltaTime: number): void {
+        this.spawnTimer.gameTick(deltaTime);
+        if (this.spawnTimer.tryFinishPeriod()) {
+            this.spawnNewEnemy();
+        }
+    }
+
+    private spawnNewEnemy(): void {
+        const enemy = this.enemyPool.borrow();
+        enemy.node.active = true;
+        enemy.node.setPosition(new Vec3(randomRange(-300, 300), randomRange(-300, 300)));
+
+        enemy.setup();
+
+        enemy.DeathEvent.on(this.returnEnemyToPool, this);
+    }
+
+    private returnEnemyToPool(enemy: Enemy): void {
+        console.log("Return to enemy pool");
+        enemy.DeathEvent.off(this.returnEnemyToPool);
+        this.enemyPool.return(enemy);
+    }
+}

assets/Scripts/Game/Enemy/EnemySpawner.ts.meta

@@ -0,0 +1,9 @@
+{
+  "ver": "4.0.23",
+  "importer": "typescript",
+  "imported": true,
+  "uuid": "8aa2a393-cd51-4bb4-a979-095e6fce95a9",
+  "files": [],
+  "subMetas": {},
+  "userData": {}
+}