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when grabbing an entity, zero out its gravity.

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This commit is contained in:
Seth Alves 2015-05-10 09:32:03 -07:00
parent 72e1ea688a
commit 8da3490a4c
1 changed files with 11 additions and 3 deletions
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14
examples/grab.js
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@ -27,6 +27,7 @@ var ANGULAR_DAMPING_RATE = 0.40;
var SCREEN_TO_METERS = 0.001;
var currentPosition, currentVelocity, cameraEntityDistance, currentRotation;
var velocityTowardTarget, desiredVelocity, addedVelocity, newVelocity, dPosition, camYaw, distanceToTarget, targetPosition;
var originalGravity;
var shouldRotate = false;
var dQ, theta, axisAngle, dT;
var angularVelocity = {
@ -65,6 +66,7 @@ function mousePressEvent(event) {
grabbedEntity = intersection.entityID;
var props = Entities.getEntityProperties(grabbedEntity)
isGrabbing = true;
originalGravity = props.gravity;
targetPosition = props.position;
currentPosition = props.position;
currentVelocity = props.velocity;
@ -96,6 +98,11 @@ function updateDropLine(position) {
function mouseReleaseEvent() {
if (isGrabbing) {
isGrabbing = false;
Entities.editEntity(grabbedEntity, {
gravity: originalGravity
});
Overlays.editOverlay(dropLine, {
visible: false
});
@ -194,7 +201,7 @@ function update(deltaTime) {
newVelocity = Vec3.subtract(newVelocity, Vec3.multiply(newVelocity, DAMPING_RATE));
// Update entity
} else {
newVelocity = entityProps.velocity;
newVelocity = {x: 0, y: 0, z: 0};
}
if (shouldRotate) {
angularVelocity = Vec3.subtract(angularVelocity, Vec3.multiply(angularVelocity, ANGULAR_DAMPING_RATE));
@ -204,7 +211,8 @@ function update(deltaTime) {
Entities.editEntity(grabbedEntity, {
velocity: newVelocity,
angularVelocity: angularVelocity
angularVelocity: angularVelocity,
gravity: {x: 0, y: 0, z: 0}
})
updateDropLine(targetPosition);
}
@ -215,4 +223,4 @@ Controller.mousePressEvent.connect(mousePressEvent);
Controller.mouseReleaseEvent.connect(mouseReleaseEvent);
Controller.keyPressEvent.connect(keyPressEvent);
Controller.keyReleaseEvent.connect(keyReleaseEvent);
Script.update.connect(update);
Script.update.connect(update);