survivors: adding simple drops

moving size to world object
adding dying for enemies and projectiles and theoretically for players
adding pull range for player
adding money stat display
made pistol homing

absurd-survivors/src/base.ts

@@ -16,6 +16,10 @@ export class Vector {
         return Math.sqrt(this.x * this.x + this.y * this.y);
     }
 
+    clone() {
+        return new Vector(this.x, this.y)
+    }
+
     distanceTo(point: Vector): number {
         return Math.sqrt(Math.pow(this.x - point.x, 2) + Math.pow(this.y - point.y, 2));
     }
@@ -56,4 +60,31 @@ export class Vector {
     set y(value: number) {
         this._y = value;
     }
+}
+
+export class Cooldown {
+    private _currentValue;
+    private _totalValue;
+
+
+    constructor(totalValue) {
+        this._totalValue = totalValue;
+        this._currentValue = 0
+    }
+
+    cooledDown(): boolean {
+        return this.currentValue <= 0;
+    }
+
+    get currentValue(): number {
+        return this._currentValue;
+    }
+
+    decreaseCooldown() {
+        this._currentValue -= 1;
+    }
+
+    resetCooldown() {
+        this._currentValue = this._totalValue;
+    }
 }