*粒子系统

1 files changed, 19 insertions, 14 deletions

diff --git a/examples/particle_system/main.cpp b/examples/particle_system/main.cpp
index 0d2b0f4..f4b047c 100644
--- a/examples/particle_system/main.cpp
+++ b/examples/particle_system/main.cpp
@@ -33,34 +33,37 @@ Color frag(Color col, Texture tex, Vertex v)
 }
 #END_FRAGMENT_SHADER
 )";
+const float Pi = 3.14f;
 void onLoad()
 {
-    tex = Texture::createTexture("smoke.png");
+    tex = Texture::createTexture("texture.png");
     shader = Shader::createShader(shader_code);
     ParticleSystemDef def;
     def.maxParticleCount = 30;
 
-    def.emitterDef.emitRateDef.rate.rate = 0.5f;
+    def.emitterDef.emitRateDef.rate.rate = 0.03f;
     def.emitterDef.forceDef.force.force = 20.f;
-    def.emitterDef.positionDef.position.position = Vector2<float>(200, 200);
+    def.emitterDef.positionDef.enableRandom = true;
+    def.emitterDef.positionDef.position.random.floor = Vector2<float>(0, 0);
+    def.emitterDef.positionDef.position.random.ceil = Vector2<float>(0, 0);
 
     def.emitterDef.directionDef.enableRandom = true;
-    def.emitterDef.directionDef.direction.random.floor = 0;
-    def.emitterDef.directionDef.direction.random.ceil = 3.14 * 2;
+    def.emitterDef.directionDef.direction.random.floor = -Pi /6 - Pi /2;
+    def.emitterDef.directionDef.direction.random.ceil = Pi /6 - Pi / 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.colorOverTimeDef.colorStart = Color(255, 255, 0, 255);
+    def.particleDef.colorOverTimeDef.colorEnd = Color(255, 0, 0, 0);
+/*
     def.particleDef.angularSpeedDef.enableRandom = true;
-    def.particleDef.angularSpeedDef.angularSpeed.random.floor = 0.05;
+    def.particleDef.angularSpeedDef.angularSpeed.random.floor = -1;
     def.particleDef.angularSpeedDef.angularSpeed.random.ceil = 1;
-
+*/
     def.particleDef.sizeOverTimeDef.enable = true;
     def.particleDef.sizeOverTimeDef.start = 1;
-    def.particleDef.sizeOverTimeDef.end = 3;
+    def.particleDef.sizeOverTimeDef.end = 0.1;
 
-    def.particleDef.lifeTimeDef.life.life = 5;
+    def.particleDef.lifeTimeDef.life.life = 4;
     p = new ParticleSystem(def);
     p->setGraphic(tex);
 }
@@ -81,8 +84,10 @@ void onUpdate(int ms)
 void onDraw()
 {
     shader->use();
-    p->render(50, 50);
-    //tex->render(10, 10);
+    Mouse* m = Mouse::get();
+    int x, y;
+    m->getState(&x, &y);
+    p->render(x, y);
     shader->unuse();
 }