add support for scripts to call methods on entity scripts

examples/controllers/handControllerGrab.js

@@ -69,6 +69,7 @@ var STATE_CLOSE_GRABBING = 2;
 var STATE_CONTINUE_CLOSE_GRABBING = 3;
 var STATE_RELEASE = 4;
 
+var GRAB_USER_DATA_KEY = "grabKey";
 
 function controller(hand, triggerAction) {
     this.hand = hand;
@@ -89,6 +90,7 @@ function controller(hand, triggerAction) {
     this.state = 0; // 0 = searching, 1 = distanceHolding, 2 = closeGrabbing
     this.pointer = null; // entity-id of line object
     this.triggerValue = 0; // rolling average of trigger value
+    this.alreadyDistanceHolding = false; // FIXME - I'll leave it to Seth to potentially make this another state
 
     this.update = function() {
         switch(this.state) {
@@ -210,13 +212,20 @@ function controller(hand, triggerAction) {
     this.distanceHolding = function() {
         if (!this.triggerSmoothedSqueezed()) {
             this.state = STATE_RELEASE;
+            this.alreadyDistanceHolding = false;
             return;
         }
 
+        if (!this.alreadyDistanceHolding) {
+            this.activateEntity(this.grabbedEntity);
+            this.alreadyDistanceHolding = true;
+        }
+
         var handPosition = this.getHandPosition();
         var handControllerPosition = Controller.getSpatialControlPosition(this.palm);
         var handRotation = Quat.multiply(MyAvatar.orientation, Controller.getSpatialControlRawRotation(this.palm));
-        var grabbedProperties = Entities.getEntityProperties(this.grabbedEntity);
+        var grabbedProperties = Entities.getEntityProperties(this.grabbedEntity, ["position","rotation"]);
+        Entities.callEntityMethod(this.grabbedEntity, "distanceHolding");
 
         this.lineOn(handPosition, Vec3.subtract(grabbedProperties.position, handPosition), INTERSECT_COLOR);
 
@@ -270,7 +279,9 @@ function controller(hand, triggerAction) {
 
         this.lineOff();
 
-        var grabbedProperties = Entities.getEntityProperties(this.grabbedEntity);
+        this.activateEntity(this.grabbedEntity);
+
+        var grabbedProperties = Entities.getEntityProperties(this.grabbedEntity, "position");
 
         var handRotation = this.getHandRotation();
         var handPosition = this.getHandPosition();
@@ -294,6 +305,7 @@ function controller(hand, triggerAction) {
         } else {
             this.state = STATE_CONTINUE_CLOSE_GRABBING;
         }
+        Entities.callEntityMethod(this.grabbedEntity, "closeGrabbing");
     }
 
 
@@ -324,6 +336,7 @@ function controller(hand, triggerAction) {
 
         this.currentObjectPosition = grabbedProperties.position;
         this.currentObjectTime = now;
+        Entities.callEntityMethod(this.grabbedEntity, "continueCloseGrabbing");
     }
 
 
@@ -336,7 +349,10 @@ function controller(hand, triggerAction) {
 
         // the action will tend to quickly bring an object's velocity to zero.  now that
         // the action is gone, set the objects velocity to something the holder might expect.
-        Entities.editEntity(this.grabbedEntity, {velocity: this.grabbedVelocity});
+        Entities.editEntity(this.grabbedEntity, { velocity: this.grabbedVelocity });
+
+        Entities.callEntityMethod(this.grabbedEntity, "release");
+        this.deactivateEntity(this.grabbedEntity);
 
         this.grabbedVelocity = ZERO_VEC;
         this.grabbedEntity = null;
@@ -348,6 +364,22 @@ function controller(hand, triggerAction) {
     this.cleanup = function() {
         release();
     }
+
+    this.activateEntity = function(entity) {
+        var data = {
+            activated: true,
+            avatarId: MyAvatar.sessionUUID
+        };
+        setEntityCustomData(GRAB_USER_DATA_KEY, this.grabbedEntity, data);
+    }
+ 
+    this.deactivateEntity = function(entity) {
+        var data = {
+            activated: false,
+            avatarId: null
+        };
+        setEntityCustomData(GRAB_USER_DATA_KEY, this.grabbedEntity, data);
+    }
 }
 
 

examples/entityScripts/detectGrabExample.js

@@ -12,7 +12,6 @@
 //
 
 (function() {
-    Script.include("../libraries/utils.js");
 
     var _this;
 
@@ -24,39 +23,18 @@
 
     DetectGrabbed.prototype = {
 
-        // update() will be called regulary, because we've hooked the update signal in our preload() function
+        distanceHolding: function () {
-        // we will check out userData for the grabData. In the case of the hydraGrab script, it will tell us
+            print("I am being distance held... entity:" + this.entityID);
-        // if we're currently being grabbed and if the person grabbing us is the current interfaces avatar.
+        },
-        // we will watch this for state changes and print out if we're being grabbed or released when it changes.
-        update: function() {
-            var GRAB_USER_DATA_KEY = "grabKey";
 
-            // because the update() signal doesn't have a valid this, we need to use our memorized _this to access our entityID
+        closeGrabbing: function () {
-            var entityID = _this.entityID;
+            print("I was just grabbed... entity:" + this.entityID);
-
+        },
-            // we want to assume that if there is no grab data, then we are not being grabbed
+        continueCloseGrabbing: function () {
-            var defaultGrabData = { activated: false, avatarId: null };
+            print("I am still being grabbed... entity:" + this.entityID);
-
+        },
-            // this handy function getEntityCustomData() is available in utils.js and it will return just the specific section
+        release: function () {
-            // of user data we asked for. If it's not available it returns our default data.
+            print("I was released... entity:" + this.entityID);
-            var grabData = getEntityCustomData(GRAB_USER_DATA_KEY, entityID, defaultGrabData);
-
-            // if the grabData says we're being grabbed, and the owner ID is our session, then we are being grabbed by this interface
-            if (grabData.activated && grabData.avatarId == MyAvatar.sessionUUID) {
-
-                // remember we're being grabbed so we can detect being released
-                _this.beingGrabbed = true;
-
-                // print out that we're being grabbed
-                print("I'm being grabbed...");
-
-            } else if (_this.beingGrabbed) {
-
-                // if we are not being grabbed, and we previously were, then we were just released, remember that
-                // and print out a message
-                _this.beingGrabbed = false;
-                print("I'm was released...");
-            }
         },
 
         // preload() will be called when the entity has become visible (or known) to the interface
@@ -65,14 +43,6 @@
         //   * connecting to the update signal so we can check our grabbed state
         preload: function(entityID) {
             this.entityID = entityID;
-            Script.update.connect(this.update);
-        },
-
-        // unload() will be called when our entity is no longer available. It may be because we were deleted,
-        // or because we've left the domain or quit the application. In all cases we want to unhook our connection
-        // to the update signal
-        unload: function(entityID) {
-            Script.update.disconnect(this.update);
         },
     };
 

libraries/entities-renderer/src/EntityTreeRenderer.cpp

@@ -112,6 +112,7 @@ void EntityTreeRenderer::init() {
                                         _scriptingServices->getControllerScriptingInterface());
         _scriptingServices->registerScriptEngineWithApplicationServices(_entitiesScriptEngine);
         _entitiesScriptEngine->runInThread();
+        DependencyManager::get<EntityScriptingInterface>()->setEntitiesScriptEngine(_entitiesScriptEngine);
     }
 
     // make sure our "last avatar position" is something other than our current position, so that on our

libraries/entities/src/EntitiesScriptEngineProvider.h

@@ -0,0 +1,25 @@
+//
+//  EntitiesScriptEngineProvider.h
+//  libraries/entities/src
+//
+//  Created by Brad Hefta-Gaub on Sept. 18, 2015
+//  Copyright 2015 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
+//
+// TODO: How will we handle collision callbacks with Entities
+//
+
+#ifndef hifi_EntitiesScriptEngineProvider_h
+#define hifi_EntitiesScriptEngineProvider_h
+
+#include <QtCore/QString>
+#include "EntityItemID.h"
+
+class EntitiesScriptEngineProvider {
+public:
+    virtual void callEntityScriptMethod(const EntityItemID& entityID, const QString& methodName) = 0;
+};
+
+#endif // hifi_EntitiesScriptEngineProvider_h

libraries/entities/src/EntityScriptingInterface.cpp

@@ -11,6 +11,7 @@
 
 #include "EntityScriptingInterface.h"
 
+#include "EntityItemID.h"
 #include <VariantMapToScriptValue.h>
 
 #include "EntitiesLogging.h"
@@ -211,6 +212,14 @@ void EntityScriptingInterface::deleteEntity(QUuid id) {
     }
 }
 
+void EntityScriptingInterface::callEntityMethod(QUuid id, const QString& method) {
+    if (_entitiesScriptEngine) {
+        EntityItemID entityID{ id };
+        _entitiesScriptEngine->callEntityScriptMethod(entityID, method);
+    }
+}
+
+
 QUuid EntityScriptingInterface::findClosestEntity(const glm::vec3& center, float radius) const {
     EntityItemID result;
     if (_entityTree) {

libraries/entities/src/EntityScriptingInterface.h

@@ -20,18 +20,19 @@
 #include <Octree.h>
 #include <OctreeScriptingInterface.h>
 #include <RegisteredMetaTypes.h>
+
 #include "PolyVoxEntityItem.h"
 #include "LineEntityItem.h"
 #include "PolyLineEntityItem.h"
 #include "EntityTree.h"
 
 #include "EntityEditPacketSender.h"
+#include "EntitiesScriptEngineProvider.h"
 
 
 class EntityTree;
 class MouseEvent;
 
-
 class RayToEntityIntersectionResult {
 public:
     RayToEntityIntersectionResult();
@@ -63,6 +64,7 @@ public:
 
     void setEntityTree(EntityTreePointer modelTree);
     EntityTreePointer getEntityTree() { return _entityTree; }
+    void setEntitiesScriptEngine(EntitiesScriptEngineProvider* engine) { _entitiesScriptEngine = engine; }
 
 public slots:
 
@@ -86,6 +88,11 @@ public slots:
     /// deletes a model
     Q_INVOKABLE void deleteEntity(QUuid entityID);
 
+    /// Allows a script to call a method on an entity's script. The method will execute in the entity script
+    /// engine. If the entity does not have an entity script or the method does not exist, this call will have
+    /// no effect.
+    Q_INVOKABLE void callEntityMethod(QUuid entityID, const QString& method);
+
     /// finds the closest model to the center point, within the radius
     /// will return a EntityItemID.isKnownID = false if no models are in the radius
     /// this function will not find any models in script engine contexts which don't have access to models
@@ -180,6 +187,7 @@ private:
                                                                         bool precisionPicking);
 
     EntityTreePointer _entityTree;
+    EntitiesScriptEngineProvider* _entitiesScriptEngine = nullptr;
 };
 
 #endif // hifi_EntityScriptingInterface_h

libraries/script-engine/src/ScriptEngine.h

@@ -25,6 +25,7 @@
 #include <AvatarHashMap.h>
 #include <LimitedNodeList.h>
 #include <EntityItemID.h>
+#include <EntitiesScriptEngineProvider.h>
 
 #include "AbstractControllerScriptingInterface.h"
 #include "ArrayBufferClass.h"
@@ -46,7 +47,7 @@ public:
     QScriptValue scriptObject;
 };
 
-class ScriptEngine : public QScriptEngine, public ScriptUser {
+class ScriptEngine : public QScriptEngine, public ScriptUser, public EntitiesScriptEngineProvider {
     Q_OBJECT
 public:
     ScriptEngine(const QString& scriptContents = NO_SCRIPT,