Dynamic body without gravity

[vincentfretin]

I just did something quite complex to create a dynamic body without gravity, and then apply gravity when I grab it so it falls when I release it.

boxEl.setAttribute("physx-body", "type: dynamic");
boxEl.setAttribute("toggle-physics", "");
boxEl.addEventListener("componentinitialized", (evt) => {
  if (evt.detail.name !== "physx-body") {
    return;
  }
  boxEl.components["physx-body"].physxRegisteredPromise.then(() => {
    boxEl.components["physx-body"].toggleGravity();
  });
});
boxEl.addEventListener(
  "pickup",
  () => {
    boxEl.components["physx-body"].toggleGravity();
  },
  { once: true }
);

The pickup event is emitted by grab-magnet-target component (from handy-controls) that toggles the grabbed state if using toggle-physics component that set the kinematic flag

physx/src/physics.js

Lines 953 to 958 in a1271b4

	events: {
	stateadded: function(e) {
	if (e.detail === 'grabbed') {
	this.rigidBody.setRigidBodyFlag(PhysX.PxRigidBodyFlag.eKINEMATIC, true)
	}
	},

Instead of componentinitialized listener and using internal physxRegisteredPromise variable, we should probably add an applyGravity property to physx-body.