fix: add return if static to physics apply force functions (#443)

src/components/physics/body.ts

@@ -28,7 +28,8 @@ export interface BodyComp extends Comp {
      */
     damping: number;
     /**
-     * If object is static, won't move, and all non static objects won't move past it.
+     * If object is static, it won't move, all non static objects won't move past it, and all
+     * calls to addForce(), applyImpulse(), or jump() on this body will do absolutely nothing.
      */
     isStatic: boolean;
     /**
@@ -160,7 +161,8 @@ export interface BodyCompOpt {
      */
     gravityScale?: number;
     /**
-     * If object is static, won't move, and all non static objects won't move past it.
+     * If object is static, it won't move, all non static objects won't move past it, and all
+     * calls to addForce(), applyImpulse(), or jump() on this body will do absolutely nothing.
      *
      * @since v3000.0
      */
@@ -472,15 +474,18 @@ export function body(opt: BodyCompOpt = {}): BodyComp {
         },
 
         applyImpulse(impulse: Vec2) {
+            if (this.isStatic) return;
             this.vel = this.vel.add(impulse);
         },
 
         addForce(force: Vec2) {
+            if (this.isStatic) return;
             acc.x += force.x / this.mass;
             acc.y += force.y / this.mass;
         },
 
         jump(force: number) {
+            if (this.isStatic) return;
             curPlatform = null;
             lastPlatformPos = null;
             this.vel = getGravityDirection().scale(