Implemented Spawn and Remove function for particles. Also added a Particle component.

src/Components/Particle.h

@@ -0,0 +1,24 @@
+#ifndef Components_Particle_h__
+#define Components_Particle_h__
+
+#include "System.h"
+#include "Component.h"
+#include "Components/Transform.h"
+#include "Components/ParticleEmitter.h"
+#include "Color.h"
+#include <vector>
+
+namespace Components
+{
+
+	struct Particle : Component
+	{
+		std::vector<Color> ColorSpectrum;
+		std::vector<float> ScaleSpectrum;
+		double LifeTime;
+		std::vector<glm::vec3> VelocitySpectrum;
+		std::vector<glm::vec3> AngularVelocitySpectrum;
+	};
+
+}
+#endif // !Components_Particle_h__

src/Components/ParticleEmitter.h

@@ -1,10 +1,7 @@
 #ifndef Components_ParticleEmitter_h__
 #define Components_ParticleEmitter_h__
 
-#include "System.h"
 #include "Component.h"
-#include "Components/Transform.h"
-#include "Components/ParticleEmitter.h"
 #include "Color.h"
 #include <vector>
 
@@ -13,15 +10,15 @@ namespace Components
 
 struct ParticleEmitter : Component
 {
-	int ParticleTemplate;
+	EntityID ParticleTemplate;
 	float SpawnFrequency;
 	int SpawnCount;
 	std::vector<Color> ColorSpectrum;
 	std::vector<float> ScaleSpectrum;
 	float SpreadAngle;
-	float LifeTime;
+	double LifeTime;
-	std::vector<float[3]> VelocitySpectrum;
+	std::vector<glm::vec3> VelocitySpectrum;
-	std::vector<float[3]> AngularVelocitySpectrum;
+	std::vector<glm::vec3> AngularVelocitySpectrum;
 };
 
 }

src/GameWorld.h

@@ -20,6 +20,7 @@
 #include "Components/Input.h"
 #include "Components/Model.h"
 #include "Components/ParticleEmitter.h"
+#include "Components/Particle.h"
 #include "Components/PointLight.h"
 #include "Components/SoundEmitter.h"
 #include "Components/Sprite.h"

src/Systems/ParticleSystem.cpp

@@ -3,9 +3,10 @@
 
 
 #include "World.h"
+
 void Systems::ParticleSystem::Update(double dt)
 {
-
+	m_TimeSinceLastSpawn += dt;
 }
 
 void Systems::ParticleSystem::UpdateEntity(double dt, EntityID entity, EntityID parent)
@@ -14,25 +15,55 @@ void Systems::ParticleSystem::UpdateEntity(double dt, EntityID entity, EntityID
 	if(!transformComponent)
 		return;
 
-	
-
-
 	auto emitterComponent = m_World->GetComponent<Components::ParticleEmitter>(entity, "ParticleEmitter");
+	if(emitterComponent)
+	{
+		if(m_TimeSinceLastSpawn > emitterComponent->SpawnFrequency)
+		{
+			SpawnParticles(entity, emitterComponent->SpawnCount, emitterComponent->SpreadAngle);
+			m_TimeSinceLastSpawn = 0;
+		}
 		
+		std::list<ParticleData>::iterator it;
+		for(it = m_ParticleEmitter[entity].begin(); it == m_ParticleEmitter[entity].end();)
+		{
+			it->TimeLived += dt;
+			auto particleComponent = m_World->GetComponent<Components::Particle>(it->ParticleID, "Particle");
+			if(it->TimeLived > particleComponent->LifeTime)
+			{
+				m_ParticleEmitter[entity].erase(it);
+				break;
+			}
+			else
+			{
+				it++;
+			}
+
+
+		}
+	}
 }
 
 void Systems::ParticleSystem::RegisterComponents(ComponentFactory* cf)
 {
 	cf->Register("ParticleEmitter", []() { return new Components::ParticleEmitter(); });
+	cf->Register("Particle", []() { return new Components::Particle(); });
 }
 
-void Systems::ParticleSystem::SpawnParticles()
+void Systems::ParticleSystem::SpawnParticles(EntityID emitterID, float spawnCount, float spreadAngle)
 {
-	for(int i = 0; i < 100; i++)
+	std::list<EntityID> particles;
+	for(int i = 0; i < spawnCount; i++)
 	{
-		auto particle = m_World->CreateEntity();
+		auto ent = m_World->CreateEntity();
-		auto transform = m_World->AddComponent<Components::Transform>(particle, "Transform");
+		auto transform = m_World->AddComponent<Components::Transform>(ent, "Transform");
 		transform->Position = glm::vec3(0);
+		auto particle = m_World->AddComponent<Components::Particle>(ent, "Particle");
+		particle->LifeTime = 4;
+		ParticleData data;
+		data.ParticleID = ent;
+		data.TimeLived = 0;
+		m_ParticleEmitter[emitterID].push_back(data);
 	}
 }
 

src/Systems/ParticleSystem.h

@@ -4,11 +4,17 @@
 #include "System.h"
 #include "Components/Transform.h"
 #include "Components/ParticleEmitter.h"
+#include "Components/Particle.h"
 
 
 namespace Systems
 {
 
+	struct ParticleData
+	{
+		EntityID ParticleID;
+		double TimeLived;
+	};
 
 class ParticleSystem : public System
 {
@@ -21,12 +27,13 @@ public:
 	void UpdateEntity(double dt, EntityID entity, EntityID parent) override;
 	void Draw(double dt);
 private:
-	void SpawnParticles();
+	void SpawnParticles(EntityID emitterID, float spawnCount, float spreadAngle);
+	std::map<EntityID, std::list<ParticleData>> m_ParticleEmitter;
+	double m_TimeSinceLastSpawn;
 	
 };
 
-
 }
 
 
-#endif // ParticleSystem_h__
+#endif // !ParticleSystem_h__

vs11/Returngeance/Returngeance.vcxproj

@@ -127,6 +127,7 @@
     <ClInclude Include="..\..\src\Components\FreeSteering.h" />
     <ClInclude Include="..\..\src\Components\Input.h" />
     <ClInclude Include="..\..\src\Components\Model.h" />
+    <ClInclude Include="..\..\src\Components\Particle.h" />
     <ClInclude Include="..\..\src\Components\ParticleEmitter.h" />
     <ClInclude Include="..\..\src\Components\Physics.h" />
     <ClInclude Include="..\..\src\Components\PointLight.h" />

vs11/Returngeance/Returngeance.vcxproj.filters

@@ -220,6 +220,9 @@
     <ClInclude Include="..\..\src\Systems\ParticleSystem.h">
       <Filter>Particle System\Systems</Filter>
     </ClInclude>
+    <ClInclude Include="..\..\src\Components\Particle.h">
+      <Filter>Particle System\Components</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <None Include="..\..\src\Shaders\AABB.frag.glsl">