overte/examples/entityScripts/chessPiece.js
2014-11-12 14:14:37 -08:00

79 lines
No EOL
2.8 KiB
JavaScript

(function(){
this.GRID_POSITION = { x: 1, y: 1, z: 1 };
this.GRID_SIZE = 1.0;
this.sound = null;
this.entityID = null;
this.properties = null;
this.updateProperties = function(entityID) {
if (this.entityID === null) {
this.entityID = entityID;
print("entityID=" + JSON.stringify(this.entityID));
}
if (!entityID.isKnownID || this.entityID.id !== entityID.id) {
print("Something is very wrong: Bailing!");
return;
}
this.properties = Entities.getEntityProperties(this.entityID);
if (!this.properties.isKnownID) {
print("Unknown entityID " + this.entityID.id + " should be self.")
}
}
this.updatePosition = function(mouseEvent) {
var pickRay = Camera.computePickRay(mouseEvent.x, mouseEvent.y)
var upVector = { x: 0, y: 1, z: 0 };
var intersection = this.rayPlaneIntersection(pickRay.origin, pickRay.direction,
this.properties.position, upVector);
Entities.editEntity(this.entityID, { position: intersection });
}
this.snapToGrid = function() {
var position = this.GRID_POSITION;
var size = this.GRID_SIZE;
var tileSize = size / 8.0;
var height = tileSize * 0.2;
var relative = Vec3.subtract(this.properties.position, position);
var i = Math.floor(relative.x / tileSize);
var j = Math.floor(relative.z / tileSize);
i = Math.min(Math.max(0, i), 7);
j = Math.min(Math.max(-1, j), 8);
relative.x = (i + 0.5) * tileSize;
relative.z = (j + 0.5) * tileSize;
var finalPos = Vec3.sum(position, relative);
Entities.editEntity(this.entityID, { position: finalPos });
}
// Pr, Vr are respectively the Ray's Point of origin and Vector director
// Pp, Np are respectively the Plane's Point of origin and Normal vector
this.rayPlaneIntersection = function(Pr, Vr, Pp, Np) {
var d = -Vec3.dot(Pp, Np);
var t = -(Vec3.dot(Pr, Np) + d) / Vec3.dot(Vr, Np);
return Vec3.sum(Pr, Vec3.multiply(t, Vr));
}
this.maybeDownloadSound = function() {
if (this.sound === null) {
this.sound = new Sound("http://public.highfidelity.io/sounds/Footsteps/FootstepW3Left-12db.wav");
}
}
this.playSound = function() {
var options = new AudioInjectionOptions();
options.position = this.properties.position;
options.volume = 0.5;
Audio.playSound(this.sound, options);
}
this.clickDownOnEntity = function(entityID, mouseEvent){
this.maybeDownloadSound();
this.updateProperties(entityID);
this.updatePosition(mouseEvent);
};
this.holdingClickOnEntity = function(entityID, mouseEvent){
this.updateProperties(entityID);
this.updatePosition(mouseEvent);
};
this.clickReleaseOnEntity = function(entityID, mouseEvent){
this.updateProperties(entityID);
this.updatePosition(mouseEvent);
this.snapToGrid();
this.playSound();
};
})