Folder structure

assets/Scripts/Game/Unit/Enemy/Enemy.ts

@@ -0,0 +1,57 @@
+import { BoxCollider2D, Component, randomRange, Vec3, _decorator } from "cc";
+import { ISignal } from "../../../Services/EventSystem/ISignal";
+import { Signal } from "../../../Services/EventSystem/Signal";
+import { UnitHealth } from "../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>();
+    private speed: number;
+
+    public setup(position: Vec3): void {
+        this.health = new UnitHealth(1);
+        this.speed = randomRange(0.5, 1);
+        this.node.setWorldPosition(position);
+        this.node.active = true;
+    }
+
+    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);
+        }
+    }
+
+    public moveBy(move: Vec3): void {
+        const newPosition: Vec3 = this.node.worldPosition;
+        newPosition.x += move.x * this.speed;
+        newPosition.y += move.y * this.speed;
+
+        this.node.setWorldPosition(newPosition);
+    }
+}
+
+export interface IDamageDealing {
+    Damage: number;
+}