collapse Effect into Ability

src/projectile.js

@@ -32,8 +32,8 @@ export default class Projectile {
     this.#homingTarget = value
   }
 
-  constructor(...options) {
-    Object.entries(options).forEach((value, key) => this[key] = value)
+  constructor(options = {}) {
+    Object.entries(options).forEach(([key, value]) => this[key] = value)
   }
 
   get game() { return this.#game }
@@ -44,10 +44,11 @@ export default class Projectile {
   set x(value) { this.position.x = value }
   set y(value) { this.position.y = value }
   set destination(value) { this.#dest = value }
+  set position(value) { this.#position = value }
 
   checkCollisions() {
     (this.game?.entities ?? []).filter((e) => e.id != this.id).forEach((e) => {
-      if (e.id == this.owner) { return }
+      if (e.id == this.owner?.id) { return }
 
       if (SATX.collideObject(this.collider, e.collider)) {
         this.onCollide(this, e)