Folder structure

assets/Scripts/Game/Unit/UnitHealth.ts

@@ -0,0 +1,42 @@
+import { ISignal } from "../../Services/EventSystem/ISignal";
+import { Signal } from "../../Services/EventSystem/Signal";
+
+export class UnitHealth {
+    private healthPoints: number;
+    private maxHealthPoints: number;
+    private healthPointsChangeEvent: Signal<number> = new Signal<number>();
+
+    public constructor(maxHealth: number) {
+        this.maxHealthPoints = maxHealth;
+        this.healthPoints = maxHealth;
+    }
+
+    public get IsAlive(): boolean {
+        return 0 < this.healthPoints;
+    }
+
+    public get HealthPoints(): number {
+        return this.healthPoints;
+    }
+    public get MaxHealthPoints(): number {
+        return this.maxHealthPoints;
+    }
+
+    public get HealthPointsChangeEvent(): ISignal<number> {
+        return this.healthPointsChangeEvent;
+    }
+
+    public heal(points: number): void {
+        this.healthPoints = Math.min(this.maxHealthPoints, this.healthPoints + points);
+        this.healthPointsChangeEvent.trigger(this.healthPoints);
+    }
+
+    public damage(points: number): void {
+        this.healthPoints -= points;
+        this.healthPointsChangeEvent.trigger(this.healthPoints);
+    }
+
+    public setMaxHealth(maxHealth: number): void {
+        this.maxHealthPoints = maxHealth;
+    }
+}