Update particle scripts

examples/entityScripts/sprayPaintCan.js

@@ -83,19 +83,18 @@
             lastFrame: 10000,
             running: true
         });
+        var PI = 3.141593;
+        var DEG_TO_RAD = PI / 180.0;
 
         this.paintStream = Entities.addEntity({
             type: "ParticleEffect",
             animationSettings: animationSettings,
             position: this.properties.position,
             textures: "https://raw.githubusercontent.com/ericrius1/SantasLair/santa/assets/smokeparticle.png",
-            emitVelocity: ZERO_VEC,
+            emitSpeed: 0,
+            speedSpread: 0.02,
+            polarFinish: 2 * DEG_TO_RAD,
             emitAcceleration: ZERO_VEC,
-            velocitySpread: {
-                x: .02,
-                y: .02,
-                z: 0.02
-            },
             emitRate: 100,
             particleRadius: 0.01,
             color: {
@@ -132,7 +131,8 @@
         position = Vec3.sum(position, Vec3.multiply(upVec, TIP_OFFSET_Y))
         Entities.editEntity(self.paintStream, {
             position: position,
-            emitVelocity: Vec3.multiply(forwardVec, 4)
+            emitOrientation: forwardVec,
+            emitSpeed: 4
         });
 
         //Now check for an intersection with an entity

examples/fireworks.js

@@ -101,7 +101,6 @@ Rocket = function(point, colorPalette) {
   this.burst = false;
 
   this.emitRate = randInt(80, 120);
-  this.emitStrength = randInt(5.0, 7.0);
 
   this.rocket = Entities.addEntity({
     type: "Sphere",
@@ -163,6 +162,9 @@ Rocket.prototype.explode = function(position) {
   });
 
   var colorIndex = 0;
+  var PI = 3.141593;
+  var DEG_TO_RAD = PI / 180.0;
+
   for (var i = 0; i < NUM_BURSTS; ++i) {
     var color = this.colors[colorIndex];
     print(JSON.stringify(color));
@@ -172,12 +174,7 @@ Rocket.prototype.explode = function(position) {
       position: position,
       textures: 'https://raw.githubusercontent.com/ericrius1/SantasLair/santa/assets/smokeparticle.png',
       emitRate: this.emitRate,
-      emitStrength: this.emitStrength,
-      emitDirection: {
-        x: Math.pow(-1, i) * randFloat(0.0, 1.4),
-        y: 1.0,
-        z: 0.0
-      },
+      polarFinish: 25 * DEG_TO_RAD,
       color: color,
       lifespan: 1.0,
       visible: true,

examples/particleDance.js

@@ -6,6 +6,9 @@
     var AUDIO_RANGE = 0.5 * RANGE;
     var DIST_BETWEEN_BURSTS = 1.0;
 
+    var PI = 3.141593;
+    var DEG_TO_RAD = PI / 180.0;
+
     var LOUDNESS_RADIUS_RATIO = 10;
 
     var TEXTURE_PATH = 'https://raw.githubusercontent.com/ericrius1/SantasLair/santa/assets/smokeparticle.png';
@@ -86,12 +89,7 @@
             position: this.point,
             textures: TEXTURE_PATH,
             emitRate: this.emitRate,
-            emitStrength: this.emitStrength,
-            emitDirection: {
-              x: Math.pow(-1, i) * randFloat(0.0, 0.4),
-              y: 1.0,
-              z: 0.0
-            },
+            polarFinish: 25 * DEG_TO_RAD,
             color: color,
             lifespan: 1.0,
             visible: true,

examples/particles.js

@@ -35,13 +35,16 @@
                                                  firstFrame: 0,
                                                  lastFrame: 30,
                                                  loop: true });
+        var PI = 3.141593;
+        var DEG_TO_RAD = PI / 180.0;
 
         this.entity = Entities.addEntity({ type: "ParticleEffect",
                                            animationSettings: animationSettings,
                                            position: spawnPoint,
                                            dimensions: {x: 2, y: 2, z: 2},
-                                           emitVelocity: {x: 0, y: 5, z: 0},
-                                           velocitySpread: {x: 2, y: 0, z: 2},
+                                           emitSpeed: 5,
+                                           speedSpread: 2,
+                                           polarFinish: 30 * DEG_TO_RAD,
                                            emitAcceleration: {x: 0, y: -9.8, z: 0},
                                            textures: "https://hifi-public.s3.amazonaws.com/alan/Particles/Particle-Sprite-Smoke-1.png",
                                            color: color,

examples/toys/grenade.js

@@ -45,6 +45,8 @@ var explodeAnimationSettings = JSON.stringify({
 var GRAVITY = -9.8;
 var TIME_TO_EXPLODE = 2500; 
 var DISTANCE_IN_FRONT_OF_ME = 1.0;
+var PI = 3.141593;
+var DEG_TO_RAD = PI / 180.0;
 
 function makeGrenade() { 
     var position = Vec3.sum(MyAvatar.position,
@@ -87,8 +89,7 @@ function update() {
                             position: newProperties.position,
                             textures: 'https://raw.githubusercontent.com/ericrius1/SantasLair/santa/assets/smokeparticle.png',
                             emitRate: 100,
-                            emitStrength: 2.0,
-                            emitDirection: { x: 0.0, y: 1.0, z: 0.0 },
+                            polarFinish: 25 * DEG_TO_RAD,
                             color: { red: 200, green: 0, blue: 0 },
                             lifespan: 10.0,
                             visible: true,
@@ -145,8 +146,7 @@ function boom() {
                         position: properties.position,
                         textures: 'https://raw.githubusercontent.com/ericrius1/SantasLair/santa/assets/smokeparticle.png',
                         emitRate: 200,
-                        emitStrength: 3.0,
-                        emitDirection: { x: 0.0, y: 1.0, z: 0.0 },
+                        polarFinish: 25 * DEG_TO_RAD,
                         color: { red: 255, green: 255, blue: 0 },
                         lifespan: 2.0,
                         visible: true,