*粒子系统

34 files changed, 760 insertions, 272 deletions

diff --git a/bin/Jin.exe b/bin/Jin.exe
index 7009d01..391db99 100644
--- a/bin/Jin.exe
+++ b/bin/Jin.exe
diff --git a/bin/game/main.lua b/bin/game/main.lua
index ca260d7..a7b9a86 100644
--- a/bin/game/main.lua
+++ b/bin/game/main.lua
@@ -38,10 +38,10 @@ local shader_program2 = nil
 local timer = nil
 local tb = {x = 1, y = 2}
 local t = 0
-local spr = nil
+local spr = nil 
 local bitmap = nil
 function jin.core.onLoad()
-	bitmap = jin.graphics.newBitmap(128, 128, function(w, h, x, y)
+	bitmap = jin.graphics.newBitmap(200, 200, function(w, h, x, y)
 		return {255*math.sin(x/w),255 - 255,255*math.cos(y/w),255}
 	end)
     shader_program = jin.graphics.newShader(shader)
@@ -51,9 +51,8 @@ function jin.core.onLoad()
 	local ssheet = jin.graphics.newSpriteSheet(tex)
     spr = ssheet:newSprite(50, 50, 50, 50)
 	spr:setPosition(0, 50)
-    spr:setShader(shader_program2)
     tex = nil
-    spr:setScale(2, 2)
+    --spr:setScale(1, 1)
 	spr:setColor(100, 0, 100, 255)
     spr:setOrigin(jin.graphics.SpriteOrigin.BOTTOMCENTER)
     -- music = jin.audio.newSource("forest.ogg")
@@ -95,6 +94,7 @@ function jin.core.onDraw()
     jin.graphics.setColor(255, 255, 255, 255)
     jin.graphics.unuseShader()
     spr:render()
+    --jin.graphics.draw(spr)
     --jin.graphics.useShader(shader_program2)
     --jin.graphics.draw(tex, 0, 0,0.2, 0.2)
     --jin.graphics.unuseShader()
diff --git a/build/vc++/examples/ParticleSystem/ParticleSystem.vcxproj.user b/build/vc++/examples/ParticleSystem/ParticleSystem.vcxproj.user
index be25078..56251fe 100644
--- a/build/vc++/examples/ParticleSystem/ParticleSystem.vcxproj.user
+++ b/build/vc++/examples/ParticleSystem/ParticleSystem.vcxproj.user
@@ -1,4 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <PropertyGroup />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <LocalDebuggerWorkingDirectory>$(SolutionDir)..\..\bin</LocalDebuggerWorkingDirectory>
+    <DebuggerFlavor>WindowsLocalDebugger</DebuggerFlavor>
+  </PropertyGroup>
 </Project>
\ No newline at end of file
diff --git a/build/vc++/libjin/libjin.vcxproj b/build/vc++/libjin/libjin.vcxproj
index a1bfa66..4012fc0 100644
--- a/build/vc++/libjin/libjin.vcxproj
+++ b/build/vc++/libjin/libjin.vcxproj
@@ -203,6 +203,7 @@
     <ClInclude Include="..\..\..\src\libjin\Math\je_matrix.h" />
     <ClInclude Include="..\..\..\src\libjin\Math\je_quad.h" />
     <ClInclude Include="..\..\..\src\libjin\math\je_random.h" />
+    <ClInclude Include="..\..\..\src\libjin\Math\je_transform.h" />
     <ClInclude Include="..\..\..\src\libjin\Math\je_vector2.hpp" />
     <ClInclude Include="..\..\..\src\libjin\Math\je_vector3.hpp" />
     <ClInclude Include="..\..\..\src\libjin\Math\je_vector4.hpp" />
@@ -266,6 +267,7 @@
     <ClCompile Include="..\..\..\src\libjin\math\je_ellipse.cpp" />
     <ClCompile Include="..\..\..\src\libjin\Math\je_matrix.cpp" />
     <ClCompile Include="..\..\..\src\libjin\math\je_random.cpp" />
+    <ClCompile Include="..\..\..\src\libjin\Math\je_transform.cpp" />
     <ClCompile Include="..\..\..\src\libjin\Net\je_net_manager.cpp" />
     <ClCompile Include="..\..\..\src\libjin\Net\je_socket.cpp" />
     <ClCompile Include="..\..\..\src\libjin\threads\je_thread.cpp" />
diff --git a/build/vc++/libjin/libjin.vcxproj.filters b/build/vc++/libjin/libjin.vcxproj.filters
index f68943f..80264af 100644
--- a/build/vc++/libjin/libjin.vcxproj.filters
+++ b/build/vc++/libjin/libjin.vcxproj.filters
@@ -312,6 +312,9 @@
     <ClInclude Include="..\..\..\src\libjin\math\je_ellipse.h">
       <Filter>source\math</Filter>
     </ClInclude>
+    <ClInclude Include="..\..\..\src\libjin\Math\je_transform.h">
+      <Filter>source\math</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <None Include="..\..\..\src\libjin\README.md">
@@ -478,5 +481,8 @@
     <ClCompile Include="..\..\..\src\libjin\math\je_ellipse.cpp">
       <Filter>source\math</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\..\src\libjin\Math\je_transform.cpp">
+      <Filter>source\math</Filter>
+    </ClCompile>
   </ItemGroup>
 </Project>
\ No newline at end of file
diff --git a/examples/particle_system/main.cpp b/examples/particle_system/main.cpp
index f37027b..0d2b0f4 100644
--- a/examples/particle_system/main.cpp
+++ b/examples/particle_system/main.cpp
@@ -5,52 +5,64 @@
 using namespace std;
 using namespace JinEngine::AI;
 using namespace JinEngine::Game;
+using namespace JinEngine::Math;
 using namespace JinEngine::Input;
 using namespace JinEngine::Graphics;
+using namespace JinEngine::Graphics::Shaders;
 using namespace JinEngine::Graphics::Particles;
 using namespace JinEngine::Filesystem;
 using namespace JinEngine::Time;
 
 ParticleSystem* p;
-StateMachine sm;
 Timer timer;
 Timer::Handler* hnd;
+Texture* tex;
+Shader* shader;
+const char* shader_code = R"(
+#VERTEX_SHADER 
+Vertex vert(Vertex v) 
+{
+    return v;
+}
+#END_VERTEX_SHADER
+#FRAGMENT_SHADER 
+Color frag(Color col, Texture tex, Vertex v)
+{
+    Color c = texel(tex, v.uv);
+	return c * col;
+}
+#END_FRAGMENT_SHADER
+)";
 void onLoad()
 {
-    sm.addState("Run");
-    sm.addState("Idle");
-    sm.addState("Sleep");
-    sm.addState("Jump");
-    sm.addParametert("run");
-    sm.addParameterb("idle");
-    /*sm.addTransitionb("Empty", "Idle", "run", StateMachine::BOOL_IS, true);
-    sm.addTransitionb("Idle", "Run", "run", StateMachine::BOOL_IS, false);
-    */
-    sm.addTransition("Run", "Idle", StateMachine::Conditions().andf());
-    sm.addTransitiont("Empty", "Idle", "run");
-    sm.addTransitiont("Idle", "Run", "run");
-    sm.setEnterListener([](const string& state, void* p) {
-        cout << "Enter: " << state << endl;
-    });
-    sm.addEnterListener("Run", [](void* p) {
-        cout << "A Run state enter callback" << endl;
-    });
-    sm.addTranslateListener("Idle", "Run", [](void* p) {
-        cout << "From Idle to Run" << endl;
-    });
-    Window::get()->show();
-    hnd = timer.every(500, [](void*) {
-        cout << sm.getCurrentState() << endl;
-    }, NULL);
-    timer.after(2500, [](void*) {
-        //sm.setParameterb("run", true);
-        sm.setParametert("run");
-        //timer.cancel(hnd);
-    }, NULL);
-    timer.after(5000, [](void*) {
-        sm.setParametert("run");
-        //sm.setParameterb("run", false);
-    }, NULL);
+    tex = Texture::createTexture("smoke.png");
+    shader = Shader::createShader(shader_code);
+    ParticleSystemDef def;
+    def.maxParticleCount = 30;
+
+    def.emitterDef.emitRateDef.rate.rate = 0.5f;
+    def.emitterDef.forceDef.force.force = 20.f;
+    def.emitterDef.positionDef.position.position = Vector2<float>(200, 200);
+
+    def.emitterDef.directionDef.enableRandom = true;
+    def.emitterDef.directionDef.direction.random.floor = 0;
+    def.emitterDef.directionDef.direction.random.ceil = 3.14 * 2;
+
+    def.particleDef.colorOverTimeDef.enable = true;
+    def.particleDef.colorOverTimeDef.colorStart = Color(255, 255, 255, 255);
+    def.particleDef.colorOverTimeDef.colorEnd = Color(255, 255, 255, 0);
+
+    def.particleDef.angularSpeedDef.enableRandom = true;
+    def.particleDef.angularSpeedDef.angularSpeed.random.floor = 0.05;
+    def.particleDef.angularSpeedDef.angularSpeed.random.ceil = 1;
+
+    def.particleDef.sizeOverTimeDef.enable = true;
+    def.particleDef.sizeOverTimeDef.start = 1;
+    def.particleDef.sizeOverTimeDef.end = 3;
+
+    def.particleDef.lifeTimeDef.life.life = 5;
+    p = new ParticleSystem(def);
+    p->setGraphic(tex);
 }
 
 void onEvent(Event* e)
@@ -62,12 +74,16 @@ void onEvent(Event* e)
 
 void onUpdate(int ms)
 {
+    p->update(ms / 1000.f);
     timer.update(ms);
-    sm.update();
 }
 
 void onDraw()
 {
+    shader->use();
+    p->render(50, 50);
+    //tex->render(10, 10);
+    shader->unuse();
 }
 
 int main(int argc, char* argv[])
@@ -93,6 +109,7 @@ int main(int argc, char* argv[])
     wndSetting.resizable = false;
     wndSetting.icon = ".";
     wnd->init(&wndSetting);
+    wnd->show();
 
     Application->run();
 
diff --git a/src/libjin/Audio/SDL/je_sdl_source.cpp b/src/libjin/Audio/SDL/je_sdl_source.cpp
index 207aa86..d417bf7 100644
--- a/src/libjin/Audio/SDL/je_sdl_source.cpp
+++ b/src/libjin/Audio/SDL/je_sdl_source.cpp
@@ -69,10 +69,10 @@ namespace JinEngine
 #define Action Command::Action
 #define Manager SDLSourceManager
 
-            ///*class member*/ std::queue<Command*> Manager::commands;
-            ///*class member*/ std::stack<Command*> Manager::commandsPool;
-            ///*class member*/ std::vector<SDLSource*> Manager::sources;
-            /*class member*/ Manager* Manager::manager = nullptr;
+            //std::queue<Command*> Manager::commands;
+            //std::stack<Command*> Manager::commandsPool;
+            //std::vector<SDLSource*> Manager::sources;
+            Manager* Manager::manager = nullptr;
 
             SDLSource* SDLSource::createSource(const char* file)
             {
diff --git a/src/libjin/Common/je_object.h b/src/libjin/Common/je_object.h
index 1afbf67..fb8221f 100644
--- a/src/libjin/Common/je_object.h
+++ b/src/libjin/Common/je_object.h
@@ -9,8 +9,6 @@ namespace JinEngine
     ///
     class Object
     {
-    public:
-
     };
 
 } // namespace JinEngine
diff --git a/src/libjin/Common/je_types.h b/src/libjin/Common/je_types.h
index 448d7ac..e31ce5e 100644
--- a/src/libjin/Common/je_types.h
+++ b/src/libjin/Common/je_types.h
@@ -1,6 +1,8 @@
 #ifndef __JE_TYPES_H__
 #define __JE_TYPES_H__
 #include <stdint.h>
+#include <stdlib.h>
+#include <cstring>
 
 namespace JinEngine
 {
@@ -18,6 +20,15 @@ namespace JinEngine
     typedef uint32_t uint;
     typedef int32_t  sint;
 
+#define Union(name, ...) \
+union _Ctor{                                    \
+    _Ctor() { memset(this, 0, sizeof(*this)); } \
+    __VA_ARGS__;                                \
+} name;
+
+#define Struct(name, ...) \
+struct {__VA_ARGS__;} name;
+
 }
 
 #endif
\ No newline at end of file
diff --git a/src/libjin/Game/je_application.cpp b/src/libjin/Game/je_application.cpp
index a5a8812..723a809 100644
--- a/src/libjin/Game/je_application.cpp
+++ b/src/libjin/Game/je_application.cpp
@@ -6,20 +6,21 @@
 #include "../time/je_timer.h"
 #include "../input/je_event.h"
 #include "../graphics/je_window.h"
+#include "../graphics/je_gl.h"
 #include "../math/je_math.h"
 
 #include "je_application.h"
 
+using namespace JinEngine::Graphics;
+using namespace JinEngine::Input;
+using namespace JinEngine::Time;
+using namespace JinEngine::Math;
+
 namespace JinEngine
 {
 	namespace Game
 	{
 
-		using namespace JinEngine::Graphics;
-		using namespace JinEngine::Input;
-		using namespace JinEngine::Time;
-		using namespace JinEngine::Math;
-
 		Application::Application() :_running(true) {};
 
 		/* default game loop */
@@ -49,6 +50,7 @@ namespace JinEngine
 				dt = current - previous;
 				if (_onUpdate != nullptr) 
 					_onUpdate(dt);
+                glClear(GL_COLOR_BUFFER_BIT);
 				if (_onDraw != nullptr) 
 					_onDraw();
 				wnd->swapBuffers();
diff --git a/src/libjin/Game/je_entity.h b/src/libjin/Game/je_entity.h
index 39822b6..80c6ff3 100644
--- a/src/libjin/Game/je_entity.h
+++ b/src/libjin/Game/je_entity.h
@@ -7,7 +7,7 @@ namespace JinEngine
 {
     namespace Game
     {
-
+/*
         ///
         /// 
         ///
@@ -20,7 +20,7 @@ namespace JinEngine
 
 
         };
-
+*/
     } // namespace Game
 } // namespace JinEngine 
 
diff --git a/src/libjin/Game/je_gameobject.h b/src/libjin/Game/je_gameobject.h
index fefc6df..7c6ec2b 100644
--- a/src/libjin/Game/je_gameobject.h
+++ b/src/libjin/Game/je_gameobject.h
@@ -16,7 +16,7 @@ namespace JinEngine
 {
     namespace Game
     {
-
+        /*
         ///
         /// Game object base class.
         ///
@@ -61,10 +61,7 @@ namespace JinEngine
             bool mIsVisible; // if the entity is visible or not 
             bool mIsActive;  // if the entity is joined into the logic
 
-            ///
-            /// Position of entity.
-            ///
-            Math::Vector2<float> mPosition;
+            Math::Transform mTransform;
 
         };
 
@@ -77,7 +74,7 @@ namespace JinEngine
         /// Entity set. For searching and keeps entities unique and sorted.
         ///
         typedef std::set<GameObject*> EntitySet;
-
+        */
     } // namespace Game
 } // namespace JinEngine
 
diff --git a/src/libjin/Graphics/fonts/je_texture_font.cpp b/src/libjin/Graphics/fonts/je_texture_font.cpp
index 868188e..3599c58 100644
--- a/src/libjin/Graphics/fonts/je_texture_font.cpp
+++ b/src/libjin/Graphics/fonts/je_texture_font.cpp
@@ -220,7 +220,7 @@ namespace JinEngine
                 Shader* shader = Shader::getCurrentShader();
                 const vector<GlyphArrayDrawInfo>& glyphinfolist = page->glyphinfolist;
                 const vector<GlyphVertex>& glyphvertices = page->glyphvertices;
-                Matrix modelMatrix = gl.getModelViewMatrix(x, y, 0, 1, 1, 0, 0);
+                Matrix modelMatrix = gl.getModelViewMatrix(x, y, 1, 1, 0, 0, 0);
                 shader->sendMatrix4(SHADER_MODELVIEW_MATRIX, &modelMatrix);
                 shader->sendMatrix4(SHADER_PROJECTION_MATRIX, &gl.getProjectionMatrix());
                 for (int i = 0; i < glyphinfolist.size(); ++i)
diff --git a/src/libjin/Graphics/fonts/je_ttf.cpp b/src/libjin/Graphics/fonts/je_ttf.cpp
index 3cbb28b..1f79558 100644
--- a/src/libjin/Graphics/fonts/je_ttf.cpp
+++ b/src/libjin/Graphics/fonts/je_ttf.cpp
@@ -308,7 +308,7 @@ namespace JinEngine
                 Shader* shader = Shader::getCurrentShader();
                 const vector<GlyphArrayDrawInfo>& glyphinfolist = page->glyphinfolist;
                 const vector<GlyphVertex>& glyphvertices = page->glyphvertices;
-                Matrix modelMatrix = gl.getModelViewMatrix(x, y, 0, 1, 1, 0, 0);
+                Matrix modelMatrix = gl.getModelViewMatrix(x, y, 1, 1, 0, 0, 0);
                 shader->sendMatrix4(SHADER_MODELVIEW_MATRIX, &modelMatrix);
                 shader->sendMatrix4(SHADER_PROJECTION_MATRIX, &gl.getProjectionMatrix());
                 for (int i = 0; i < glyphinfolist.size(); ++i)
diff --git a/src/libjin/Graphics/je_canvas.cpp b/src/libjin/Graphics/je_canvas.cpp
index 491bf6b..8f216e6 100644
--- a/src/libjin/Graphics/je_canvas.cpp
+++ b/src/libjin/Graphics/je_canvas.cpp
@@ -10,10 +10,10 @@ namespace JinEngine
 	namespace Graphics
 	{
 
-		/*class member*/ const Canvas* Canvas::current = nullptr;
-		/*class member*/ const Canvas* const Canvas::DEFAULT_CANVAS = new Canvas(0);
+		const Canvas* Canvas::current = nullptr;
+		const Canvas* const Canvas::DEFAULT_CANVAS = new Canvas(0);
 
-		/*class member*/ Canvas* Canvas::createCanvas(int w, int h)
+		Canvas* Canvas::createCanvas(int w, int h)
 		{
 			return new Canvas(w, h);
 		}
@@ -51,7 +51,7 @@ namespace JinEngine
 		{
 		}
 
-		/*class member*/ bool Canvas::isBinded(const Canvas* cvs)
+		bool Canvas::isBinded(const Canvas* cvs)
 		{
 			return current == cvs;
 		}
@@ -59,7 +59,7 @@ namespace JinEngine
 		/**
 		* bind to canvas 
 		*/
-		/*class member*/ void Canvas::bind(Canvas* canvas)
+		void Canvas::bind(Canvas* canvas)
 		{
 			if (isBinded(canvas)) return;
 			current = canvas;
@@ -77,7 +77,7 @@ namespace JinEngine
 		* https://blog.csdn.net/liji_digital/article/details/79370841
 		* https://blog.csdn.net/lyx2007825/article/details/8792475
 		*/
-		/*class member*/ void Canvas::unbind()
+		void Canvas::unbind()
 		{
 			if (isBinded(DEFAULT_CANVAS)) return;
 			current = DEFAULT_CANVAS;
diff --git a/src/libjin/Graphics/je_gl.cpp b/src/libjin/Graphics/je_gl.cpp
index f098f97..c58f0ac 100644
--- a/src/libjin/Graphics/je_gl.cpp
+++ b/src/libjin/Graphics/je_gl.cpp
@@ -15,7 +15,9 @@ namespace JinEngine
             : ogl2d::OpenGL()
         {
             mModelViewMatrices.push_back(Matrix());
-            solve();
+            mModelViewMatrix.setIdentity();
+            for (Matrix& m : mModelViewMatrices)
+                mModelViewMatrix *= m;
         }
 
         void OpenGL::setColor(Channel r, Channel g, Channel b, Channel a)
@@ -51,11 +53,6 @@ namespace JinEngine
             if (mModelViewMatrices.size() == 1)
                 return;
             mModelViewMatrices.pop_back();
-            solve();
-        }
-
-        void OpenGL::solve()
-        {
             mModelViewMatrix.setIdentity();
             for (Matrix& m : mModelViewMatrices)
                 mModelViewMatrix *= m;
@@ -91,10 +88,15 @@ namespace JinEngine
         Matrix OpenGL::getModelViewMatrix(float x, float y, float sx, float sy, float r, float ox, float oy)
         {
             Matrix m;
-            m.setTransformation(x, y, sx, sy, r, ox, oy);
+            m.setTransformation(x, y, r, sx, sy, ox, oy);
             return mModelViewMatrix*m;
         }
 
+        Math::Matrix OpenGL::getModelViewMatrix(const Math::Transform& tansform)
+        {
+            return mModelViewMatrix * tansform.getMatrix();
+        }
+
         Matrix OpenGL::getModelViewMatrix()
         {
             return mModelViewMatrix;
diff --git a/src/libjin/Graphics/je_gl.h b/src/libjin/Graphics/je_gl.h
index fba62a1..134cfee 100644
--- a/src/libjin/Graphics/je_gl.h
+++ b/src/libjin/Graphics/je_gl.h
@@ -4,16 +4,22 @@
 #include <vector>
 
 #include "../math/je_matrix.h"
+#include "../math/je_transform.h"
 
-#include "je_color.h"
 #include "GLee/GLee.h"
 #include "ogl/OpenGL.h"
 
+#include "je_color.h"
+
 namespace JinEngine
 {
 	namespace Graphics
 	{
 
+        /*class Canvas;
+        class Shader;
+        class Font;
+*/
 		class OpenGL 
             : public ogl2d::OpenGL
 		{
@@ -42,6 +48,11 @@ namespace JinEngine
             void pop();
 
             ///
+            ///
+            ///
+            Math::Matrix getModelViewMatrix(const Math::Transform& tansform);
+
+            ///
             /// Get model view matrix.
             ///
             Math::Matrix getModelViewMatrix(float x, float y, float sx, float sy, float r, float ox, float oy);
@@ -61,17 +72,63 @@ namespace JinEngine
             ///
             const Math::Matrix& getProjectionMatrix();
 
-        private:
+            /// 
+            /// 
+            /// 
+            void useShader();
 
-            void solve();
+            /// 
+            /// 
+            /// 
+            void useFont(); 
 
-            Color mCurrentColor;
+            /// 
+            /// 
+            /// 
+            void useCanvas();
+
+            ///
+            ///
+            ///
+            void unUseShader();
+
+        private:
 
+            ///
+            ///
+            ///
             std::vector<Math::Matrix> mModelViewMatrices;
+
+            ///
+            ///
+            ///
             Math::Matrix mModelViewMatrix;
 
+            ///
+            ///
+            ///
             Math::Matrix mProjectionMatrix;
 
+            ///
+            ///
+            ///
+            Color mCurrentColor;
+/*
+            ///
+            ///
+            ///
+            Canvas* mCurrentCanvas;
+
+            ///
+            ///
+            ///
+            Shader* mCurrentShader;
+
+            ///
+            ///
+            ///
+            Font* mCurrentFont;
+*/
 		};
 
         // Singleton.
diff --git a/src/libjin/Graphics/je_graphic.cpp b/src/libjin/Graphics/je_graphic.cpp
index 0bb3fe1..552eac6 100644
--- a/src/libjin/Graphics/je_graphic.cpp
+++ b/src/libjin/Graphics/je_graphic.cpp
@@ -4,10 +4,12 @@
 #include <stdlib.h>
 
 #include "../math/je_matrix.h"
+#include "../math/je_vector2.hpp"
 
 #include "shaders/je_shader.h"
 #include "je_graphic.h"
 
+using namespace JinEngine::Math;
 using namespace JinEngine::Graphics::Shaders;
 
 namespace JinEngine
@@ -45,7 +47,7 @@ namespace JinEngine
 
         void Graphic::render(int x, int y, float sx, float sy, float r, float ox, float oy) const
         {
-            Math::Matrix modelMatrix = gl.getModelViewMatrix(x, y, r, sx, sy, ox, oy);
+            Math::Matrix modelMatrix = gl.getModelViewMatrix(x, y, sx, sy, r, ox, oy);
             int w = getWidth(), h = getHeight();
             static float vertexCoords[8];
             static float textureCoords[8];
@@ -91,7 +93,7 @@ namespace JinEngine
             textureCoords[4] = slx + slw; textureCoords[5] = sly + slh;
             textureCoords[6] = slx + slw; textureCoords[7] = sly;
 
-            Math::Matrix modelMatrix = gl.getModelViewMatrix(x, y, r, sx, sy, ax, ay);
+            Math::Matrix modelMatrix = gl.getModelViewMatrix(x, y, sx, sy, r, ax, ay);
 
             Shader* shader = Shader::getCurrentShader();
             shader->sendMatrix4(SHADER_MODELVIEW_MATRIX, &modelMatrix);
@@ -104,6 +106,24 @@ namespace JinEngine
             gl.bindTexture(0);
         }
 
+        void Graphic::render(const Math::Transform& transform) const
+        {
+            Vector2<float> position = transform.getPosition();
+            Vector2<float> origin = transform.getOrigin();
+            Vector2<float> scale = transform.getScale();
+            float angle = transform.getRotation();
+            render(position.x, position.y, scale.x, scale.y, angle, origin.x, origin.y);
+        }
+
+        void Graphic::render(const Math::Quad& slice, const Math::Transform& transform) const
+        {
+            Vector2<float> position = transform.getPosition();
+            Vector2<float> origin = transform.getOrigin();
+            Vector2<float> scale = transform.getScale();
+            float angle = transform.getRotation();
+            render(slice, position.x, position.y, scale.x, scale.y, angle, origin.x, origin.y);
+        }
+
         //void Graphic::setFilter(GLint min, GLint max)
         //{
         //    glTexParameteri(GL_)
diff --git a/src/libjin/Graphics/je_graphic.h b/src/libjin/Graphics/je_graphic.h
index 91c8b44..51c8e3d 100644
--- a/src/libjin/Graphics/je_graphic.h
+++ b/src/libjin/Graphics/je_graphic.h
@@ -5,6 +5,7 @@
 
 #include "../math/je_quad.h"
 #include "../math/je_vector2.hpp"
+#include "../math/je_transform.h"
 
 #include "je_gl.h"
 #include "je_bitmap.h"
@@ -67,6 +68,16 @@ namespace JinEngine
             /// 
             void render(const Math::Quad& slice, int x, int y, float sx = 1, float sy = 1, float r = 0, float ox = 0, float oy = 0) const;
 
+            ///
+            /// Render with transform.
+            ///
+            void render(const Math::Transform& transform) const;
+
+            ///
+            ///
+            ///
+            void render(const Math::Quad& slice, const Math::Transform& transform) const;
+
         protected:
             Math::Vector2<uint> mSize;
 
diff --git a/src/libjin/Graphics/je_sprite.cpp b/src/libjin/Graphics/je_sprite.cpp
index 810cb0e..b92a2c2 100644
--- a/src/libjin/Graphics/je_sprite.cpp
+++ b/src/libjin/Graphics/je_sprite.cpp
@@ -11,9 +11,7 @@ namespace JinEngine
     {
 
         Sprite::Sprite()
-            : mShader(nullptr)
-            , mGraphic(nullptr)
-            , mScale(1, 1)
+            : mGraphic(nullptr)
             , mColor(255, 255, 255, 255)
             , mIsOriginEnum(false)
         {
@@ -35,7 +33,7 @@ namespace JinEngine
 
         void Sprite::setRotation(float r)
         {
-            mRotation = r;
+            mTransform.setRotation(r);
         }
 
         void Sprite::setOrigin(Origin origin)
@@ -49,58 +47,49 @@ namespace JinEngine
             switch (origin)
             {
             case TopLeft:
-                mOrigin.x = l;
-                mOrigin.y = t;
+                mTransform.setOrigin(1, t);
                 break;
             case TopCenter:
-                mOrigin.x = r/2.f;
-                mOrigin.y = t;
+                mTransform.setOrigin(r / 2.f, t);
                 break;
             case TopRight:
-                mOrigin.x = r;
-                mOrigin.y = t;
+                mTransform.setOrigin(r, t);
                 break;
             case MiddleLeft:
-                mOrigin.x = l;
-                mOrigin.y = b/2.f;
+                mTransform.setOrigin(1, b / 2.f);
                 break;
             case MiddleCenter:
-                mOrigin.x = r/2.f;
-                mOrigin.y = b/2.f;
+                mTransform.setOrigin(r / 2.f, b / 2.f);
                 break;
             case MiddleRight:
-                mOrigin.x = r;
-                mOrigin.y = b/2.f;
+                mTransform.setOrigin(r, b / 2.f);
                 break;
             case BottomLeft:
-                mOrigin.x = l;
-                mOrigin.y = b;
+                mTransform.setOrigin(l, b);
                 break;
             case BottomCenter:
-                mOrigin.x = r/2.f;
-                mOrigin.y = b;
+                mTransform.setOrigin(r / 2.f, b);
                 break;
             case BottomRight:
-                mOrigin.x = r;
-                mOrigin.y = b;
+                mTransform.setOrigin(r, b);
                 break;
             }
         }
 
         void Sprite::setOrigin(int x, int y)
         {
-            mOrigin.set(x, y);
+            mTransform.setOrigin(x, y);
             mIsOriginEnum = false;
         }
 
         void Sprite::setPosition(float x, float y)
         {
-            mPosition.set(x, y);
+            mTransform.setPosition(x, y);
         }
 
         void Sprite::setScale(float x, float y)
         {
-            mScale.set(x, y);
+            mTransform.setScale(x, y);
         }
 
         void Sprite::setColor(Color color)
@@ -108,11 +97,6 @@ namespace JinEngine
             mColor = color;
         }
 
-        void Sprite::setShader(Shader* shader)
-        {
-            mShader = shader;
-        }
-
         void Sprite::setGraphic(const Graphic* graphic)
         {
             mGraphic = graphic;
@@ -121,34 +105,27 @@ namespace JinEngine
             setQuad(0, 0, w, h);
         }
 
-
         void Sprite::move(float x, float y)
         {
-            mPosition.x += x; 
-            mPosition.y += y;
+            mTransform.move(x, y);
         }
 
         void Sprite::rotate(float r)
         {
-            mRotation += r;
+            mTransform.rotate(r);
         }
 
         void Sprite::scale(float sx, float sy)
         {
-            mScale.x += sx; 
-            mScale.y += sy;
+            mTransform.scale(sx, sy);
         }
 
         void Sprite::render()
         {
-            Shader* shader = Shader::getCurrentShader();
             Color c = gl.getColor();
             gl.setColor(mColor);
-            if(mShader != nullptr)
-                mShader->use();
-            if(mGraphic != nullptr)
-                mGraphic->render(mQuad, mPosition.x, mPosition.y, mScale.x, mScale.y, mRotation, mOrigin.x, mOrigin.y);
-            shader->use();
+            if (mGraphic != nullptr)
+                mGraphic->render(mQuad, mTransform);
             gl.setColor(c);
         }
 
diff --git a/src/libjin/Graphics/je_sprite.h b/src/libjin/Graphics/je_sprite.h
index 65e00eb..faf16df 100644
--- a/src/libjin/Graphics/je_sprite.h
+++ b/src/libjin/Graphics/je_sprite.h
@@ -41,36 +41,29 @@ namespace JinEngine
             void setPosition(float x, float y);
             void setScale(float sx, float sy);
             void setColor(Color color);
-            void setShader(Shaders::Shader* shader);
             void setGraphic(const Graphic* graphic);
 
             void move(float x, float y);
             void rotate(float r);
             void scale(float sx, float sy);
 
-            float getRotation() { return mRotation; }
+            float getRotation() { return mTransform.getRotation(); }
             Math::Vector2<int> getSize() { return Math::Vector2<int>(mQuad.w, mQuad.h); }
             const Math::Quad& getQuad() { return mQuad; }
-            const Math::Vector2<float>& getPosition() { return mPosition; }
-            const Math::Vector2<int>& getOrigin() { return mOrigin; }
-            const Math::Vector2<float>& getScale() { return mScale; }
+            const Math::Vector2<float>& getPosition() { return mTransform.getPosition(); }
+            const Math::Vector2<float>& getOrigin() { return mTransform.getOrigin(); }
+            const Math::Vector2<float>& getScale() { return mTransform.getScale(); }
             const Color& getColor() { return mColor; }
             const Graphic* getGraphic() { return mGraphic; }
-            const Shaders::Shader* getShader() { return mShader; }
 
-            ///
-            /// Render callback.
-            ///
-            virtual void render();
+            void render();
 
         private:
             ///
             /// Origin must be 0~1 float value.
             ///
-            Math::Vector2<float> mPosition;
-            Math::Vector2<int> mOrigin;
-            Math::Vector2<float> mScale;
-            float mRotation;
+            Math::Transform mTransform;
+    
             Color mColor;
 
             Math::Quad mQuad;
@@ -78,7 +71,6 @@ namespace JinEngine
             bool mIsOriginEnum;
             Origin mOriginEnum;
 
-            Shaders::Shader* mShader;
             const Graphic* mGraphic;
 
 	    };
diff --git a/src/libjin/Graphics/particles/je_particle.cpp b/src/libjin/Graphics/particles/je_particle.cpp
index 20bbd03..53f4570 100644
--- a/src/libjin/Graphics/particles/je_particle.cpp
+++ b/src/libjin/Graphics/particles/je_particle.cpp
@@ -1,5 +1,9 @@
+#include "../../math/je_math.h"
+
 #include "je_particle.h"
 
+using namespace JinEngine::Math;
+
 namespace JinEngine
 {
     namespace Graphics
@@ -7,20 +11,62 @@ namespace JinEngine
         namespace Particles
         {
 
+            Particle::Particle(const Graphic* grc)
+                : graphic(grc)
+            {
+                reset();
+            }
+
             void Particle::reset()
             {
-                lifeTime = 0.0f; 
+                transform.set(0, 0, 1, 1, 0, 0, 0);
+                lifeTime = 1.0f; 
                 life = 0.0f; 
-                position.set(0, 0);
-                direction = 0.0f; 
                 speed.set(0, 0); 
                 linearAcceleration.set(0, 0); 
                 radialAcceleration = 0.0f; 
-                size = 1; 
-                sizeBegin = 1; 
+                angularSpeed = 0;
+                scaleBegin = 1;
+                scaleEnd = 1;
+                color = Color::WHITE;
+                colorStart = Color::WHITE;
+                colorEnd = Color::WHITE;
                 alive = true;
             }
 
+            void Particle::update(float dt)
+            {
+                float t = life / lifeTime;
+                // Lerp color 
+                color.r = lerp<int>(colorStart.r, colorEnd.r, t);
+                color.g = lerp<int>(colorStart.g, colorEnd.g, t);
+                color.b = lerp<int>(colorStart.b, colorEnd.b, t);
+                color.a = lerp<int>(colorStart.a, colorEnd.a, t);
+                // Lerp scale.
+                Vector2<float> scale = transform.getScale();
+                scale.x = lerp<float>(scaleBegin, scaleEnd, t);
+                scale.y = scale.x;
+                transform.setScale(scale.x, scale.y);
+                // Calculate position.
+                speed += linearAcceleration * dt;
+                transform.move(speed * dt);
+                // Calculate rotation.
+                angularSpeed += radialAcceleration * dt;
+                transform.rotate(angularSpeed * dt);
+                // Update life time.
+                life += dt;
+                alive = life < lifeTime;
+            }
+
+            void Particle::render()
+            {
+                Color c = gl.getColor();
+                gl.setColor(color);
+                if (graphic != nullptr)
+                    graphic->render(transform);
+                gl.getColor();
+            }
+
         }
     }
 }
\ No newline at end of file
diff --git a/src/libjin/Graphics/particles/je_particle.h b/src/libjin/Graphics/particles/je_particle.h
index 2d112d1..70a2653 100644
--- a/src/libjin/Graphics/particles/je_particle.h
+++ b/src/libjin/Graphics/particles/je_particle.h
@@ -1,8 +1,10 @@
 #ifndef __JE_PARTICLE_H__
 #define __JE_PARTICLE_H__
 
+#include "../../math/je_transform.h"
 #include "../../math/je_vector2.hpp"
 #include "../je_color.h"
+#include "../je_graphic.h"
 
 namespace JinEngine
 {
@@ -19,56 +21,20 @@ namespace JinEngine
             struct LifeTimeDef
             {
                 bool enableRandom = false;
-                union
-                {
-                    struct
-                    {
-                        float min, max;
-                    } random;
-                    float life;
-                } life;
-            };
-
-            ///
-            ///
-            ///
-            struct SpeedOverTimeDef
-            {
-                bool enable = false;
-                bool enableRandom = false;
-                union
-                {
+                Struct(life,
                     struct
                     {
-                        Math::Vector2<float> startFloor;
-                        Math::Vector2<float> startCeil;
-                        Math::Vector2<float> endFloor;
-                        Math::Vector2<float> endCeil;
+                        float floor, ceil;
                     } random;
-                    struct
-                    {
-                        Math::Vector2<float> start;
-                        Math::Vector2<float> end;
-                    } speed;
-                } speed;
+                    float life = 1.0f;
+                );
             };
 
-            struct SizeOverTimeDef
+            struct ScaleOverTimeDef
             {
                 bool enable = false;
-                bool enableRandom = false;
-                union {
-                    struct {
-                        float startFloor = 1;
-                        float startCeil = 1;
-                        float endFloor = 1;
-                        float endCeil = 1;
-                    } random;
-                    struct {
-                        float start = 1;
-                        float end = 1;
-                    } size;
-                } size;
+                float start = 1;
+                float end = 1;
             };
 
             struct ColorOverTimeDef
@@ -85,7 +51,20 @@ namespace JinEngine
 
             struct RadialAccelarationDef
             {
-                float radialAccelaration;
+                float radialAccelaration = 0.f;
+            };
+
+            struct AngularSpeedDef
+            {
+                bool enableRandom = false;
+                Struct(angularSpeed,
+                    struct
+                {
+                    float floor = 0;
+                    float ceil = 0;
+                } random;
+                float angularSpeed = 0;
+                );
             };
 
             ///
@@ -101,22 +80,22 @@ namespace JinEngine
                 LifeTimeDef lifeTimeDef;                     ///< 
                 linearAccelarationDef linearAccelarationDef; ///<
                 RadialAccelarationDef radialAccelarationDef; ///< 
+                AngularSpeedDef angularSpeedDef;             ///<
                 // Optional definitions.
-                SpeedOverTimeDef speedOverTimeDef;           ///< 
-                SizeOverTimeDef sizeOverTimeDef;             ///< 
+                ScaleOverTimeDef sizeOverTimeDef;             ///< 
                 ColorOverTimeDef colorOverTimeDef;           ///< 
             };
 
             ///
-            /// A single particle contains various properties of particle, such as position, accelaration, color and 
-            /// other attributes changed over time.
+            /// A single particle contains various properties of particle, such as position, accelaration, color 
+            /// and other attributes changed over time.
             ///
             struct Particle
             {
                 ///
                 /// Default constructor.
                 ///
-                Particle() {};
+                Particle(const Graphic* graphic);
                 
                 ///
                 /// Reset to default.
@@ -124,45 +103,54 @@ namespace JinEngine
                 void reset();
 
                 ///
+                ///
+                ///
+                void update(float dt);
+
+                ///
+                ///
+                ///
+                void render();
+
+                //////////////////////////////////////////////////////////////////////////////////////////////////
+
+                ///
                 /// Whole life time.
                 ///
-                float lifeTime = 0.0f;
+                float lifeTime = 1.0f;
 
                 ///
                 /// Current life time.
                 ///
                 float life = 0.0f;
 
+                const Graphic* graphic;
+
                 ///
-                /// Current position.
+                /// Color over lifetime.
                 ///
-                Math::Vector2<float> position;
+                Color color = Color::WHITE;
+                Color colorStart = Color::WHITE;
+                Color colorEnd = Color::WHITE;
 
                 ///
-                /// Emitte direction.
-                /// 
-                float direction = 0;
+                /// Position scale rotation origin.
+                ///
+                Math::Transform transform;
 
+                ///
+                /// Speeds.
+                ///
                 Math::Vector2<float> speed;
                 Math::Vector2<float> linearAcceleration;
+                float angularSpeed;
                 float radialAcceleration = 0;
 
                 ///
                 /// Size over lifetime.
                 ///
-                float size = 1;
-                float sizeBegin = 1;
-                float sizeEnd = 1;
-
-                float rotation = 0;
-                float angle = 0;
-
-                ///
-                /// Color over lifetime.
-                ///
-                Color color = Color::WHITE;
-                Color colorStart = Color::WHITE;
-                Color colorEnd = Color::WHITE;
+                float scaleBegin = 1;
+                float scaleEnd = 1;
 
                 ///
                 /// Is particle still alive? Alive is equivalent to NOT available in particle pool.
diff --git a/src/libjin/Graphics/particles/je_particle_emitter.cpp b/src/libjin/Graphics/particles/je_particle_emitter.cpp
index edc4bee..d8fb78d 100644
--- a/src/libjin/Graphics/particles/je_particle_emitter.cpp
+++ b/src/libjin/Graphics/particles/je_particle_emitter.cpp
@@ -3,6 +3,7 @@
 #include "../../math/je_random.h"
 
 #include "je_particle_emitter.h"
+#include "je_particle_system.h"
 
 using namespace JinEngine::Math;
 
@@ -13,28 +14,90 @@ namespace JinEngine
         namespace Particles
         {
 
+            static const uint8 ACCURACY_4 = 4;
+            static const uint8 ACCURACY_5 = 5;
+            static const uint8 ACCURACY_6 = 6;
+
             // Particle emitter 
-            static RandomGenerator rnd(time(NULL));
+            static RandomGenerator rng(0xEA44944);
 
             ParticleEmitter::ParticleEmitter(ParticleSystem& ps)
-                : mParticleSystem(ps)
+                : mPS(ps)
+                , mDef(ps.mDef.emitterDef)
+                , mPDef(ps.mDef.particleDef)
+                , mTime(0)
             {
             }
 
             void ParticleEmitter::update(float dt)
             {
                 mTime += dt; 
-                if (mTime < 1)
-                    return;
-
-
-                mTime -= 1;
+                for (;mTime >= mInterval; mTime -= mInterval)
+                {
+                    emit();
+                    // Random rate.
+                    if (mDef.emitRateDef.enableRandom)
+                        mInterval = rng.randf(mDef.emitRateDef.rate.random.floor, mDef.emitRateDef.rate.random.ceil, ACCURACY_5);
+                    else
+                        mInterval = mDef.emitRateDef.rate.rate;
+                }
             }
 
             void ParticleEmitter::emit()
             {
-
-
+                Particle* p = mPS.claim();
+                if (p == nullptr)
+                    return;
+                p->reset();
+                // Init position.
+                if (mDef.positionDef.enableRandom)
+                {
+                    float x = rng.randf(mDef.positionDef.position.random.floor.x, mDef.positionDef.position.random.ceil.x, ACCURACY_4);
+                    float y = rng.randf(mDef.positionDef.position.random.floor.y, mDef.positionDef.position.random.ceil.y, ACCURACY_4);
+                    p->transform.setPosition(x, y);
+                }
+                else
+                {
+                    p->transform.setPosition(mDef.positionDef.position.position);
+                }
+                // Init speed.
+                float r = 0;
+                if (mDef.directionDef.enableRandom)
+                    r = rng.randf(mDef.directionDef.direction.random.floor, mDef.directionDef.direction.random.ceil, ACCURACY_4);
+                else
+                    r = mDef.directionDef.direction.direction;
+                float f = 0; 
+                if (mDef.forceDef.enableRandom)
+                    f = rng.randf(mDef.forceDef.force.random.floor, mDef.forceDef.force.random.ceil, ACCURACY_4);
+                else
+                    f = mDef.forceDef.force.force;
+                p->speed.set(f*cos(r), f*sin(r));
+                // Init life time
+                if (mPDef.lifeTimeDef.enableRandom)
+                    p->lifeTime = rng.randf(mPDef.lifeTimeDef.life.random.floor, mPDef.lifeTimeDef.life.random.floor, ACCURACY_4);
+                else
+                    p->lifeTime = mPDef.lifeTimeDef.life.life;
+                // Init linear accelaration
+                p->linearAcceleration = mPDef.linearAccelarationDef.linearAccelaration;
+                // Init angular accelaration
+                p->radialAcceleration = mPDef.radialAccelarationDef.radialAccelaration;
+                // Init Angular speed.
+                if (mPDef.angularSpeedDef.enableRandom)
+                    p->angularSpeed = rng.randf(mPDef.angularSpeedDef.angularSpeed.random.floor, mPDef.angularSpeedDef.angularSpeed.random.ceil, ACCURACY_4);
+                else
+                    p->angularSpeed = mPDef.angularSpeedDef.angularSpeed.angularSpeed;
+                // Scale over time
+                if (mPDef.sizeOverTimeDef.enable)
+                {
+                    p->scaleBegin = mPDef.sizeOverTimeDef.start;
+                    p->scaleEnd = mPDef.sizeOverTimeDef.end;
+                }
+                // Color over time 
+                if (mPDef.colorOverTimeDef.enable)
+                {
+                    p->colorStart = mPDef.colorOverTimeDef.colorStart;
+                    p->colorEnd = mPDef.colorOverTimeDef.colorEnd;
+                }
             }
 
         }
diff --git a/src/libjin/Graphics/particles/je_particle_emitter.h b/src/libjin/Graphics/particles/je_particle_emitter.h
index 9200532..44bd1fb 100644
--- a/src/libjin/Graphics/particles/je_particle_emitter.h
+++ b/src/libjin/Graphics/particles/je_particle_emitter.h
@@ -16,29 +16,27 @@ namespace JinEngine
             struct PositionDef
             {
                 bool enableRandom = false;
-                union
-                {
+                Struct(position,
                     struct
                     {
-                        Math::Vector2<float> min;
-                        Math::Vector2<float> max;
+                        Math::Vector2<float> floor;
+                        Math::Vector2<float> ceil;
                     } random;
                     Math::Vector2<float> position;
-                } position;
+                );
             };
 
             struct DirectionDef
             {
                 bool enableRandom = false;
-                union
-                {
+                Struct(direction,
                     struct
                     {
-                        float min = 0;
-                        float max = 0;
+                        float floor = 0;
+                        float ceil = 0;
                     } random;
                     float direction = 0;
-                } direction;
+                );
             };
 
             ///
@@ -47,25 +45,42 @@ namespace JinEngine
             struct EmitRateDef
             {
                 bool enableRandom = false;
-                union
-                {
+                Struct(rate,
                     struct
                     {
-                        float min = 1;
-                        float max = 1;
+                        float floor = 1;
+                        float ceil = 1;
                     } random;
                     float rate = 1;
-                } rate;
+                );
+            };
+
+            ///
+            /// Initial speed of particle.
+            ///
+            struct ForceDef
+            {
+                bool enableRandom = false;
+                Struct(force,
+                    struct
+                    {
+                        float floor = 1;
+                        float ceil = 1;
+                    } random;
+                float force = 1;
+                );
             };
 
             ///
             /// Definition of particle emitter.
             ///
-            struct ParticleEmitterDef : public Temporary
+            struct ParticleEmitterDef
             {
+                EmitRateDef emitRateDef;   ///< Emit rate.
+
                 PositionDef positionDef;   ///< Emit position(relativily to the particle system center).
                 DirectionDef directionDef; ///< Emit direction.
-                EmitRateDef emitRateDef;   ///< Emit rate.
+                ForceDef forceDef;         ///< Emit force.
             };
 
             class ParticleSystem;
@@ -90,10 +105,14 @@ namespace JinEngine
                 ///
                 ///
                 ///
-                ParticleSystem& mParticleSystem;
+                ParticleSystem& mPS;
+
+                const ParticleEmitterDef& mDef;
+
+                const ParticleDef& mPDef;
 
                 ///
-                /// Emit a particle according to emitter definition and particle definition, particle system should 
+                /// Emit particle according to emitter definition and particle definition, particle system should 
                 /// assign particle value to the particle in particle pool, but not use this return particle.
                 ///
                 void emit();
@@ -103,6 +122,11 @@ namespace JinEngine
                 ///
                 float mTime;
 
+                ///
+                ///
+                ///
+                float mInterval;
+
             };
 
         } // namespace Particles
diff --git a/src/libjin/Graphics/particles/je_particle_system.cpp b/src/libjin/Graphics/particles/je_particle_system.cpp
index 68f8f21..a81a3c9 100644
--- a/src/libjin/Graphics/particles/je_particle_system.cpp
+++ b/src/libjin/Graphics/particles/je_particle_system.cpp
@@ -4,8 +4,64 @@ namespace JinEngine
 {
     namespace Graphics
     {
+        namespace Particles
+        {
 
+            ParticleSystem::ParticleSystem(const ParticleSystemDef& def)
+                : mDef(def)
+                , mEmitter(*this)
+                , mParticlePool(def.maxParticleCount, sizeof(Particle))
+            {
+            }
 
+            ParticleSystem::~ParticleSystem()
+            {
+            }
 
+            void ParticleSystem::update(float dt)
+            {
+                mEmitter.update(dt);
+                for (int i = 0; i < mAliveParticles.size(); ++i)
+                {
+                    Particle* p = mAliveParticles[i];
+                    if (p->alive == false)
+                    {
+                        recycle(i, p);
+                        --i;
+                    }
+                    else
+                    {
+                        p->update(dt);
+                    }
+                }
+            }
+
+            void ParticleSystem::render(float x, float y, float sx /* = 1 */, float sy /* = 1 */, float r /* = 0 */, float ax /* = 0 */, float ay /* = 0 */)
+            {
+                for (Particle* p : mAliveParticles)
+                    p->render();
+            }
+
+            void ParticleSystem::setGraphic(const Graphic* graphic)
+            {
+                mGraphic = graphic;
+            }
+
+            Particle* ParticleSystem::claim()
+            {
+                Particle* p = new (mParticlePool.GetNextWithoutInitializing()) Particle(mGraphic);
+                mAliveParticles.push_back(p);
+                return p;
+            }
+
+            void ParticleSystem::recycle(int i, Particle* p)
+            {
+                if (i >= mAliveParticles.size())
+                    return;
+                mAliveParticles.erase(mAliveParticles.begin() + i);
+                mParticlePool.Delete(p);
+            }
+
+        }
     }
-}
+}
\ No newline at end of file
diff --git a/src/libjin/Graphics/particles/je_particle_system.h b/src/libjin/Graphics/particles/je_particle_system.h
index afa96b2..8ee79ec 100644
--- a/src/libjin/Graphics/particles/je_particle_system.h
+++ b/src/libjin/Graphics/particles/je_particle_system.h
@@ -22,10 +22,10 @@ namespace JinEngine
             ///
             /// Definition of particle system.
             ///
-            struct ParticleSystemDef : public Temporary
+            struct ParticleSystemDef
             {
+                ParticleSystemDef() {}
                 uint maxParticleCount = 1;     ///< Max count of particles in pool. 1 by default.
-
                 ParticleEmitterDef emitterDef; ///< Particle emitter definition. 
                 ParticleDef particleDef;       ///< Particle definition.
             };
@@ -33,7 +33,7 @@ namespace JinEngine
             ///
             /// Particle emitter, handle all particles it emitts.
             ///
-            class ParticleSystem : public Game::GameObject
+            class ParticleSystem/* : public Game::GameObject*/
             {
             public:
                 ///
@@ -51,25 +51,37 @@ namespace JinEngine
                 ///
                 /// Update particle system and all alive particles.
                 ///
-                void update(float sec);
+                void update(float dt);
 
                 ///
                 /// Render particle system.
                 ///
-                void render(int x, int y, float sx = 1, float sy = 1, float r = 0, float ax = 0, float ay = 0);
+                void render(float x, float y, float sx = 1, float sy = 1, float r = 0, float ax = 0, float ay = 0);
 
                 ///
                 /// Set sprite to render. 
                 /// 
                 /// @param sprite Sprite to render.
                 ///
-                void setSprite(Sprite* sprite);
+                void setGraphic(const Graphic* graphic);
 
             private:
-                // Disable default constructor.
+
+                friend class ParticleEmitter;
+
                 ParticleSystem();
 
                 ///
+                ///
+                ///
+                Particle* claim();
+
+                ///
+                ///
+                ///
+                void recycle(int i, Particle* p);
+
+                ///
                 /// Particle system definition.
                 ///
                 ParticleSystemDef mDef;
@@ -77,7 +89,7 @@ namespace JinEngine
                 ///
                 /// Sprite to be drawn.
                 ///
-                Sprite* mSprite;
+                const Graphic* mGraphic;
 
                 ///
                 /// Particle emitter.
diff --git a/src/libjin/Math/je_random.cpp b/src/libjin/Math/je_random.cpp
index 983fa36..216fd79 100644
--- a/src/libjin/Math/je_random.cpp
+++ b/src/libjin/Math/je_random.cpp
@@ -1,3 +1,4 @@
+#include <math.h>
 #include "je_random.h"
 
 namespace JinEngine
@@ -5,9 +6,47 @@ namespace JinEngine
     namespace Math
     {
 
-        RandomGenerator::RandomGenerator()
+        RandomGenerator::RandomGenerator(uint32 seed)
+            : mSeed(seed)
         {
         }
 
+        uint32 RandomGenerator::rand()
+        {
+            unsigned int next = mSeed;
+            uint32 result;
+
+            next *= 1103515245;
+            next += 12345;
+            result = (unsigned int)(next / 65536) % 2048;
+
+            next *= 1103515245;
+            next += 12345;
+            result <<= 10;
+            result ^= (unsigned int)(next / 65536) % 1024;
+
+            next *= 1103515245;
+            next += 12345;
+            result <<= 10;
+            result ^= (unsigned int)(next / 65536) % 1024;
+
+            mSeed = next;
+
+            return result;
+        }
+
+        uint32 RandomGenerator::rand(uint32 min, uint32 max)
+        {
+            uint32 n = rand();
+            return n % (max - min + 1) + min;
+        }
+
+        float RandomGenerator::randf(float min, float max, int ac)
+        {
+            uint32 a = pow(10.f, ac);
+            uint32 n = rand(min*a, max*a);
+            return (float)n / a;
+        }
+
     }
 }
\ No newline at end of file
diff --git a/src/libjin/Math/je_random.h b/src/libjin/Math/je_random.h
index 0bcdec7..0f53155 100644
--- a/src/libjin/Math/je_random.h
+++ b/src/libjin/Math/je_random.h
@@ -14,11 +14,16 @@ namespace JinEngine
         class RandomGenerator
         {
         public: 
-            RandomGenerator(); 
-            explicit RandomGenerator(uint32 seed);
+            RandomGenerator(uint32 seed);
+
+            uint32 rand();
 
             uint32 rand(uint32 min, uint32 max);
-            float rand(float min, float max);
+
+            float randf(float min, float max, int ac);
+
+        private:
+            uint32 mSeed;
 
         };
 
diff --git a/src/libjin/Math/je_transform.cpp b/src/libjin/Math/je_transform.cpp
new file mode 100644
index 0000000..c0676cb
--- /dev/null
+++ b/src/libjin/Math/je_transform.cpp
@@ -0,0 +1,99 @@
+#include "je_transform.h"
+
+namespace JinEngine
+{
+    namespace Math
+    {
+
+        Transform::Transform()
+            : mScale(1, 1)
+            , mPosition(0, 0)
+            , mOrigin(0, 0)
+            , mRotation(0)
+        {
+        }
+
+        void Transform::set(float x, float y, float sx, float sy, float r, float ox, float oy)
+        {
+            setPosition(x, y);
+            setScale(sx, sy);
+            setRotation(r);
+            setOrigin(ox, oy);
+        }
+
+        void Transform::setScale(float sx, float sy)
+        {
+            mScale.set(sx, sy);
+        }
+
+        Vector2<float> Transform::getScale() const
+        {
+            return mScale;
+        }
+
+        void Transform::scale(float sx, float sy)
+        {
+            mScale.x *= sx; 
+            mScale.y *= sy;
+        }
+
+        void Transform::setPosition(const Vector2<float>& p)
+        {
+            setPosition(p.x, p.y);
+        }
+
+        void Transform::setPosition(float x, float y)
+        {
+            mPosition.set(x, y);
+        }
+
+        Vector2<float> Transform::getPosition() const
+        {
+            return mPosition;
+        }
+
+        void Transform::move(float x, float y)
+        {
+            mPosition.x += x; 
+            mPosition.y += y;
+        }
+
+        void Transform::move(const Vector2<float>& v)
+        {
+            move(v.x, v.y);
+        }
+
+        void Transform::setOrigin(float x, float y)
+        {
+            mOrigin.set(x, y);
+        }
+
+        Vector2<float> Transform::getOrigin() const
+        {
+            return mOrigin;
+        }
+
+        void Transform::setRotation(float r)
+        {
+            mRotation = r;
+        }
+
+        float Transform::getRotation() const
+        {
+            return mRotation;
+        }
+
+        void Transform::rotate(float r)
+        {
+            mRotation += r;
+        }
+
+        Matrix Transform::getMatrix() const
+        {
+            Matrix m;
+            m.setTransformation(mPosition.x, mPosition.y, mRotation, mScale.x, mScale.y, mOrigin.x, mOrigin.y);
+            return m;
+        }
+
+    }
+}
\ No newline at end of file
diff --git a/src/libjin/Math/je_transform.h b/src/libjin/Math/je_transform.h
new file mode 100644
index 0000000..cb1f0ee
--- /dev/null
+++ b/src/libjin/Math/je_transform.h
@@ -0,0 +1,49 @@
+#ifndef __JE_TRANSFORM_H__
+#define __JE_TRANSFORM_H__
+
+#include "je_matrix.h"
+#include "je_vector2.hpp"
+
+namespace JinEngine
+{
+    namespace Math
+    {
+
+        class Transform
+        {
+        public:
+            Transform();
+
+            void set(float x, float y, float sx, float sy, float r, float ox, float oy);
+
+            void setScale(float sx, float sy);
+            Vector2<float> getScale() const;
+            void scale(float sx, float sy);
+
+            void setPosition(float x, float y);
+            void setPosition(const Vector2<float>& p);
+            Vector2<float> getPosition() const;
+            void move(float x, float y);
+            void move(const Vector2<float>& v);
+
+            void setOrigin(float x, float y);
+            Vector2<float> getOrigin() const;
+
+            void setRotation(float r);
+            float getRotation() const;
+            void rotate(float r);
+
+            Matrix getMatrix() const;
+
+        private:
+            Vector2<float> mScale;
+            Vector2<float> mPosition;
+            Vector2<float> mOrigin;
+            float mRotation;
+
+        };
+
+    }
+}
+
+#endif
\ No newline at end of file
diff --git a/src/libjin/Math/je_vector2.hpp b/src/libjin/Math/je_vector2.hpp
index e9599e1..b4cab44 100644
--- a/src/libjin/Math/je_vector2.hpp
+++ b/src/libjin/Math/je_vector2.hpp
@@ -31,6 +31,17 @@ namespace JinEngine
                 data[1] = v.data[1];
             }
 
+            Vector2<T> operator * (float n)
+            {
+                return Vector2<T>(data[0]*n, data[1]*n);
+            }
+
+            void operator +=(const Vector2<T> v)
+            {
+                data[0] += v.data[0];
+                data[1] += v.data[1];
+            }
+
             void set(T _x, T _y)
             {
                 data[0] = _x;
diff --git a/src/lua/modules/graphics/je_lua_graphics.cpp b/src/lua/modules/graphics/je_lua_graphics.cpp
index ce569d0..900b26b 100644
--- a/src/lua/modules/graphics/je_lua_graphics.cpp
+++ b/src/lua/modules/graphics/je_lua_graphics.cpp
@@ -17,6 +17,7 @@
 #include "je_lua_text.h"
 #include "je_lua_texture_font.h"
 #include "je_lua_page.h"
+#include "je_lua_sprite.h"
 
 using namespace std;
 using namespace JinEngine;
@@ -385,16 +386,27 @@ namespace JinEngine
 		    font->render(page, x, y);
 	    }
 
+        LUA_IMPLEMENT void l_draw_sprite(lua_State* L)
+        {
+            if (!luax_istype(L, 1, Jin_Lua_Sprite))
+                return;
+            Proxy* pxySprite = (Proxy*)luax_toudata(L, 1);
+            Sprite* spr = pxySprite->getObject<Sprite>();
+            spr->render();
+        }
+
         LUA_IMPLEMENT int l_draw(lua_State* L)
         {
-		    if (luax_istype(L, 1, Jin_Lua_Texture))
-			    l_draw_texture(L);
-		    else if (luax_istype(L, 1, Jin_Lua_Canvas))
-			    l_draw_canvas(L);
-		    else if (luax_istype(L, 1, Jin_Lua_Text))
-			    l_draw_text(L);
-		    else if (luax_istype(L, 1, Jin_Lua_Page))
-			    l_draw_page(L);
+            if (luax_istype(L, 1, Jin_Lua_Texture))
+                l_draw_texture(L);
+            else if (luax_istype(L, 1, Jin_Lua_Canvas))
+                l_draw_canvas(L);
+            else if (luax_istype(L, 1, Jin_Lua_Text))
+                l_draw_text(L);
+            else if (luax_istype(L, 1, Jin_Lua_Page))
+                l_draw_page(L);
+            else if (luax_istype(L, 1, Jin_Lua_Sprite))
+                l_draw_sprite(L);
             else
             {
                 luax_typerror(L, 1, "texture or canvas");
diff --git a/src/lua/modules/graphics/je_lua_sprite.cpp b/src/lua/modules/graphics/je_lua_sprite.cpp
index 97128a9..76d6c1f 100644
--- a/src/lua/modules/graphics/je_lua_sprite.cpp
+++ b/src/lua/modules/graphics/je_lua_sprite.cpp
@@ -91,16 +91,6 @@ namespace JinEngine
             return 0;
         }
 
-        LUA_IMPLEMENT int l_setShader(lua_State* L)
-        {
-            SharedSprite sprite = checkSprite(L);
-            Proxy* proxy = (Proxy*)luax_checktype(L, 2, Jin_Lua_Shader);
-            Shader* shader = proxy->getObject<Shader>();
-            sprite->setShader(shader);
-            sprite.setDependency((int)SpriteDependency::DEP_SHADER, &proxy->getShared<Shader>());
-            return 0;
-        }
-
         LUA_IMPLEMENT int l_setGraphic(lua_State* L)
         {
             SharedSprite sprite = checkSprite(L);
@@ -164,7 +154,7 @@ namespace JinEngine
         LUA_IMPLEMENT int l_getOrigin(lua_State* L)
         {
             SharedSprite sprite = checkSprite(L);
-            const Math::Vector2<int>& origin = sprite->getOrigin();
+            const Math::Vector2<float>& origin = sprite->getOrigin();
             luax_pushinteger(L, origin.x);
             luax_pushinteger(L, origin.y);
             return 2;
@@ -241,7 +231,6 @@ namespace JinEngine
                 { "setPosition", l_setPosition },
                 { "setScale",    l_setScale    },
                 { "setColor",    l_setColor    },
-                { "setShader",   l_setShader   },
                 { "setGraphic",  l_setGraphic  },
                 { "move",        l_move        },
                 { "scale",       l_scale       },