man, I have tried so far to no avail 
var PointAndClick = pc.createScript('pointAndClick');
PointAndClick.attributes.add('cameraEntity', {type: 'entity', title: 'Camera Entity'});
PointAndClick.attributes.add('cameraEntityTarget', {type: 'entity', title: 'Camera Entity Target'});
PointAndClick.attributes.add('playerEntity', {type: 'entity', title: 'Player Entity'});
PointAndClick.attributes.add('playerSpeed', {type: 'number', default: 0, title: 'Player Speed'});
PointAndClick.attributes.add('status', {type: 'boolean', title: 'Status'});
// initialize code called once per entity
PointAndClick.prototype.initialize = function() {
this.groundShape = new pc.BoundingBox(new pc.Vec3(0, 0, 0), new pc.Vec3(4, 0.001, 4));
this.direction = new pc.Vec3();
this.distanceToTravel = 0;
this.targetPosition = new pc.Vec3();
// Register the mouse down and touch start event so we know when the user has clicked
this.app.mouse.on(pc.EVENT_MOUSEDOWN, this.onMouseDown, this);
if (this.app.touch) {
this.app.touch.on(pc.EVENT_TOUCHSTART, this.onTouchStart, this);
}
this.animation = pc.app.root.findByName('player_allan_mash').script.personAnimate;
this.player_mash = pc.app.root.findByName('player_allan');
this.walk = false;
this.targetPosition = new pc.Vec3 (0, 0, 0);
this.lerpedPosition = new pc.Vec3 ();
this.speed = 3;
this.lookFrom = new pc.Vec3();
this.lookTo = new pc.Vec3();
this.playerEntity.lookAt(this.lookFrom);
this.movePlayerTo(this.lookFrom);
this.rotation = new pc.Vec3();
};
PointAndClick.newPosition = new pc.Vec3();
// update code called every frame
PointAndClick.prototype.update = function(dt) {
if (this.direction.lengthSq() > 0) {
if(this.walk===false){
this.animation.setState('walk');
this.walk = true;
}
// Move in the direction at a set speed
var d = this.playerSpeed * dt;
var newPosition = PointAndClick.newPosition;
newPosition.copy(this.direction).scale(d);
newPosition.add(this.playerEntity.getPosition());
this.playerEntity.rigidbody.teleport(newPosition);
this.distanceToTravel -= d;
// If we have reached our destination, clamp the position
// and reset the direction
if (this.distanceToTravel <= 0) {
this.direction.set(0, 0, 0);
this.animation.setState('idle');
this.walk = false;
this.tween.stop();
this.tween = undefined;
}
}
this.lerpedPosition.lerp (this.cameraEntityTarget.getPosition(), PointAndClick.newPosition, this.speed * dt);
this.cameraEntityTarget.setPosition(this.lerpedPosition);
};
PointAndClick.prototype.movePlayerTo = function (worldPosition) {
this.targetPosition.copy(worldPosition);
// Assuming we are travelling on a flat, horizontal surface, we make the Y the same
// as the player
this.targetPosition.y = this.playerEntity.getPosition().y;
this.distanceTravelled = 0;
// Work out the direction that the player needs to travel in
this.direction.sub2(this.targetPosition, this.playerEntity.getPosition());
// Get the distance the player needs to travel for
this.distanceToTravel = this.direction.length();
if (this.distanceToTravel > 0) {
// Ensure the direction is a unit vector
this.direction.normalize();
if( this.tween ){
this.tween.stop();
this.tween = undefined;
}
this.lookTo = this.targetPosition;
//this.lookTo.x = this.playerEntity.getPosition().x;
//this.lookTo.z = this.playerEntity.getPosition().z;
this.tween = this.app
.tween(this.lookFrom)
.to(this.lookTo, 0.32, pc.Linear)
.on('update', function () {
//this.playerEntity.setRotation(0,this.playerEntity.getRotation(),0);
this.playerEntity.lookAt(this.lookFrom);
}.bind(this))
.start();
//this.lookFrom = this.playerEntity.getPosition();
//this.playerEntity.lookAt(this.targetPosition);
//
} else {
this.direction.set(0, 0, 0);
}
};
PointAndClick.prototype.onMouseDown = function(event) {
if (event.button == pc.MOUSEBUTTON_LEFT && this.status===true) {
this.doRayCast(event);
}
};
PointAndClick.prototype.onTouchStart = function (event) {
// On perform the raycast logic if the user has one finger on the screen
if (event.touches.length == 1 && this.status===true) {
this.doRayCast(event.touches[0]);
event.event.preventDefault();
}
};
PointAndClick.ray = new pc.Ray();
PointAndClick.hitPosition = new pc.Vec3();
PointAndClick.prototype.doRayCast = function (screenPosition) {
var ray = PointAndClick.ray;
var hitPosition = PointAndClick.hitPosition;
this.groundShape = new pc.BoundingBox(new pc.Vec3(0, 0, 0), new pc.Vec3(1000, 0, 1000));
this.cameraEntity.camera.screenToWorld(screenPosition.x, screenPosition.y, this.cameraEntity.camera.farClip, ray.direction);
ray.origin.copy(this.cameraEntity.getPosition());
ray.direction.sub(ray.origin).normalize();
// Test the ray against the ground
var result = this.groundShape.intersectsRay(ray, hitPosition);
if (result) {
this.movePlayerTo(hitPosition);
}
};
