feat: array utils for vec2 (#292)

CHANGELOG.md

@@ -114,6 +114,8 @@ obj.sprite = "bag";
 - added `camFlash()` to flash the screen
 - added `SpriteComp.getCurAnim()` to get the current animation data
 - added `Color.toArray()` to convert a color to an array
+- added `Vec2.toArray()` to convert a vec2 to an array (eg: player.pos.toArray())
+- added `Vec2.fromArray()` to convert an array to a vec2 (eg: player.pos = Vec2.fromArray(newPosition))
 - added `outline()`, `shader()`, and `area()` properties to `debug.inspect` (f1)
 - added `kaboomOpt.debugKey` for customizing the key used to toggle debug mode
 - added `GameObjRaw.tags` to get a game object's tags

src/math/math.ts

@@ -100,6 +100,11 @@ export class Vec2 {
         return new Vec2(Math.cos(angle), Math.sin(angle));
     }
 
+    /** Create a new Vec2 from an array */
+    static fromArray(arr: Array<number>) {
+        return new Vec2(arr[0], arr[1]);
+    }
+
     static LEFT = new Vec2(-1, 0);
     static RIGHT = new Vec2(1, 0);
     static UP = new Vec2(0, -1);
@@ -287,6 +292,10 @@ export class Vec2 {
     toString(): string {
         return `vec2(${this.x.toFixed(2)}, ${this.y.toFixed(2)})`;
     }
+
+    toArray(): Array<number> {
+        return [this.x, this.y];
+    }
 }
 
 export function vec2(...args: Vec2Args): Vec2 {