New setBody component for setting and change body shape

v3/src/physics/matter-js/MatterImage.js

@@ -18,6 +18,7 @@ var MatterImage = new Class({
         Components.Gravity,
         Components.Mass,
         Components.Sensor,
+        Components.SetBody,
         Components.Sleep,
         Components.Static,
         Components.Transform,
@@ -35,28 +36,26 @@ var MatterImage = new Class({
         this.setSizeToFrame();
         this.setOrigin();
 
-        this._tempVec2 = new Vector2();
+        this.world = world;
 
-        var isCircle = GetFastValue(options, 'isCircle', false);
+        this._tempVec2 = new Vector2(x, y);
 
-        if (isCircle)
+        var shape = GetFastValue(options, 'shape', null);
+
+        if (!shape)
         {
-            var radius = GetFastValue(options, 'radius', Math.max(this.width, this.height) / 2);
+            this.body = Bodies.rectangle(x, y, this.width, this.height, options);
 
-            this.body = Bodies.circle(x, y, radius, options);
+            this.body.gameObject = this;
+
+            if (GetFastValue(options, 'addToWorld', true))
+            {
+                world.add(this.body);
+            }
         }
         else
         {
-            this.body = Bodies.rectangle(x, y, this.width, this.height, options);
+            this.setBody(shape, options);
-        }
-
-        this.body.gameObject = this;
-
-        this.world = world;
-
-        if (GetFastValue(options, 'addToWorld', true))
-        {
-            world.add(this.body);
         }
 
         this.setPosition(x, y);

v3/src/physics/matter-js/MatterSprite.js

@@ -19,6 +19,7 @@ var MatterSprite = new Class({
         Components.Gravity,
         Components.Mass,
         Components.Sensor,
+        Components.SetBody,
         Components.Sleep,
         Components.Static,
         Components.Transform,
@@ -38,28 +39,26 @@ var MatterSprite = new Class({
         this.setSizeToFrame();
         this.setOrigin();
 
-        this._tempVec2 = new Vector2();
+        this.world = world;
 
-        var isCircle = GetFastValue(options, 'isCircle', false);
+        this._tempVec2 = new Vector2(x, y);
 
-        if (isCircle)
+        var shape = GetFastValue(options, 'shape', null);
+
+        if (!shape)
         {
-            var radius = GetFastValue(options, 'radius', Math.max(this.width, this.height) / 2);
+            this.body = Bodies.rectangle(x, y, this.width, this.height, options);
 
-            this.body = Bodies.circle(x, y, radius, options);
+            this.body.gameObject = this;
+
+            if (GetFastValue(options, 'addToWorld', true))
+            {
+                world.add(this.body);
+            }
         }
         else
         {
-            this.body = Bodies.rectangle(x, y, this.width, this.height, options);
+            this.setBody(shape, options);
-        }
-
-        this.body.gameObject = this;
-
-        this.world = world;
-
-        if (GetFastValue(options, 'addToWorld', true))
-        {
-            world.add(this.body);
         }
 
         this.setPosition(x, y);

v3/src/physics/matter-js/components/SetBody.js

@@ -0,0 +1,81 @@
+var Bodies = require('../lib/factory/Bodies');
+var Body = require('../lib/body/Body');
+var GetFastValue = require('../../../utils/object/GetFastValue');
+
+var SetBody = {
+
+    setBody: function (config, options)
+    {
+        //  Existing body? Remove it.
+        if (this.body)
+        {
+            this.world.remove(this.body);
+        }
+
+        if (!config)
+        {
+            return this;
+        }
+        else
+        {
+            var shapeType = GetFastValue(config, 'type', 'rectangle');
+            var bodyX = GetFastValue(config, 'x', this._tempVec2.x);
+            var bodyY = GetFastValue(config, 'y', this._tempVec2.y);
+            var bodyWidth = GetFastValue(config, 'width', this.width);
+            var bodyHeight = GetFastValue(config, 'height', this.height);
+
+            switch (shapeType)
+            {
+                case 'rectangle':
+                    this.body = Bodies.rectangle(bodyX, bodyY, bodyWidth, bodyHeight, options);
+                    break;
+
+                case 'circle':
+                    var radius = GetFastValue(config, 'radius', Math.max(bodyWidth, bodyHeight) / 2);
+                    var maxSides = GetFastValue(config, 'maxSides', 25);
+                    this.body = Bodies.circle(bodyX, bodyY, radius, options, maxSides);
+                    break;
+
+                case 'trapezoid':
+                    var slope = GetFastValue(config, 'slope', 0.5);
+                    this.body = Bodies.trapezoid(bodyX, bodyY, bodyWidth, bodyHeight, slope, options);
+                    break;
+
+                case 'polygon':
+                    var sides = GetFastValue(config, 'sides', 5);
+                    var radius = GetFastValue(config, 'radius', Math.max(bodyWidth, bodyHeight) / 2);
+                    this.body = Bodies.polygon(bodyX, bodyY, sides, radius, options);
+                    break;
+
+                case 'fromVertices':
+                case 'fromVerts':
+                    var verts = GetFastValue(config, 'verts', []);
+
+                    if (this.body)
+                    {
+                        Body.setVertices(this.body, verts);
+                    }
+                    else
+                    {
+                        var flagInternal = GetFastValue(config, 'flagInternal', false);
+                        var removeCollinear = GetFastValue(config, 'removeCollinear', 0.01);
+                        var minimumArea = GetFastValue(config, 'minimumArea', 10);
+                        this.body = Bodies.fromVertices(bodyX, bodyY, verts, options, flagInternal, removeCollinear, minimumArea);
+                    }
+                    break;
+            }
+        }
+
+        this.body.gameObject = this;
+        
+        if (GetFastValue(config, 'addToWorld', true))
+        {
+            this.world.add(this.body);
+        }
+
+        return this;
+    }
+
+};
+
+module.exports = SetBody;

v3/src/physics/matter-js/components/index.js

@@ -10,6 +10,7 @@ module.exports = {
     Mass: require('./Mass'),
     Static: require('./Static'),
     Sensor: require('./Sensor'),
+    SetBody: require('./SetBody'),
     Sleep: require('./Sleep'),
     Transform: require('./Transform'),
     Velocity: require('./Velocity')