make collision callbacks work

examples/collidingEntities.js

@@ -22,11 +22,6 @@ var velocity = {
   y: 0,
   z: 1 };
 
-var gravity = {  
-  x: 0, 
-  y: 0,
-  z: 0 };
-
 var damping = 0.1;
 
 var color = {  
@@ -45,25 +40,20 @@ function draw(deltaTime) {
             y: 1,
             z: 2 };
         var largeRadius = 0.5;
-        var verySlow = {  
-            x: 0.01, 
-            y: 0,
-            z: 0.01 };
 
         var properties = {
             type: "Sphere",
+            script: "file:///Users/zappoman/Development/HiFi/hifi/examples/entityScripts/changeColorOnCollision.js",
             collisionsWillMove: true,
             position: startPosition, 
             dimensions: {x: largeRadius, y: largeRadius, z: largeRadius},
             registrationPoint: { x: 0.5, y: 0.5, z: 0.5 },
             color: colorGreen, 
-            //velocity: verySlow, 
-            //gravity: gravity, 
             damping: damping, 
             lifetime: 20
         };
         
-        Entities.addEntity(properties);
+        //Entities.addEntity(properties);
         numberEntitiesAdded++;
     }
     
@@ -95,13 +85,13 @@ function draw(deltaTime) {
         if (numberEntitiesAdded <= MAX_ENTITIES) {
             var properties = {
                 type: "Sphere",
+                script: "file:///Users/zappoman/Development/HiFi/hifi/examples/entityScripts/changeColorOnCollision.js",
                 collisionsWillMove: true,
                 position: center, 
                 dimensions: {x: entitySize, y: entitySize, z: entitySize},
                 registrationPoint: { x: 0.5, y: 0.5, z: 0.5 },
                 color: color, 
                 velocity: velocity, 
-                //gravity: gravity, 
                 damping: damping, 
                 lifetime: 20
             };

examples/entityScripts/changeColorOnCollision.js

@@ -0,0 +1,27 @@
+//
+//  changeColorOnCollision.js
+//  examples/entityScripts
+//
+//  Created by Brad Hefta-Gaub on 12/8/14.
+//  Copyright 2014 High Fidelity, Inc.
+//
+//  Distributed under the Apache License, Version 2.0.
+//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
+//
+
+print("changeColorOnCollision.js");
+
+(function(){ 
+    function getRandomInt(min, max) {
+        return Math.floor(Math.random() * (max - min + 1)) + min;
+    }
+
+    this.preload = function(myID) { 
+        print("changeColorOnCollision.js--- preload!!!");
+    };
+
+    this.collisionWithEntity = function(myID, otherID, collisionInfo) { 
+        print("collisionWithEntity");
+        Entities.editEntity(myID, { color: { red: getRandomInt(128,255), green: getRandomInt(128,255), blue: getRandomInt(128,255)} });
+    }; 
+})

interface/src/entities/EntityTreeRenderer.cpp

@@ -886,13 +886,33 @@ void EntityTreeRenderer::changingEntityID(const EntityItemID& oldEntityID, const
 
 void EntityTreeRenderer::entityCollisionWithVoxel(const EntityItemID& entityID, const VoxelDetail& voxel, 
                                                     const Collision& collision) {
-    qDebug() << "EntityTreeRenderer::entityCollisionWithVoxel()... ";
+    QScriptValue entityScript = getPreviouslyLoadedEntityScript(entityID);
+    if (entityScript.property("collisionWithVoxel").isValid()) {
+        QScriptValueList args;
+        args << entityID.toScriptValue(_entitiesScriptEngine);
+        args << collisionToScriptValue(_entitiesScriptEngine, collision);
+        entityScript.property("collisionWithVoxel").call(entityScript, args);
+    }
 }
 
 void EntityTreeRenderer::entityCollisionWithEntity(const EntityItemID& idA, const EntityItemID& idB, 
                                                     const Collision& collision) {
-    qDebug() << "EntityTreeRenderer::entityCollisionWithEntity()... ";
-    qDebug() << "    idA:" << idA;
-    qDebug() << "    idB:" << idB;
+    QScriptValue entityScriptA = loadEntityScript(idA);
+    if (entityScriptA.property("collisionWithEntity").isValid()) {
+        QScriptValueList args;
+        args << idA.toScriptValue(_entitiesScriptEngine);
+        args << idB.toScriptValue(_entitiesScriptEngine);
+        args << collisionToScriptValue(_entitiesScriptEngine, collision);
+        entityScriptA.property("collisionWithEntity").call(entityScriptA, args);
+    }
+
+    QScriptValue entityScriptB = loadEntityScript(idB);
+    if (entityScriptB.property("collisionWithEntity").isValid()) {
+        QScriptValueList args;
+        args << idB.toScriptValue(_entitiesScriptEngine);
+        args << idA.toScriptValue(_entitiesScriptEngine);
+        args << collisionToScriptValue(_entitiesScriptEngine, collision);
+        entityScriptB.property("collisionWithEntity").call(entityScriptA, args);
+    }
 }
 

libraries/entities/src/EntityCollisionSystem.cpp

@@ -54,7 +54,7 @@ void EntityCollisionSystem::updateCollisions() {
     PerformanceTimer perfTimer("collisions");
     assert(_entityTree);
     // update all Entities
-    if (_entityTree->tryLockForRead()) {
+    if (_entityTree->tryLockForWrite()) {
         foreach (EntityItem* entity, _movingEntities) {
             checkEntity(entity);
         }

libraries/octree/src/Octree.cpp

@@ -46,7 +46,7 @@ Octree::Octree(bool shouldReaverage) :
     _isDirty(true),
     _shouldReaverage(shouldReaverage),
     _stopImport(false),
-    _lock(),
+    _lock(QReadWriteLock::Recursive),
     _isViewing(false),
     _isServer(false)
 {