Emitter childed to a wheel. BUG FIXED: Billboarding calculation.

src/GameWorld.cpp

@@ -436,6 +436,31 @@ void GameWorld::Initialize()
 			Wheel->ConnectedToHandbrake = true;
 			Wheel->TorqueRatio = 0.125f;
 			CommitEntity(wheel);
+
+			auto entity = CreateEntity(wheel);
+			auto transformComponent = AddComponent<Components::Transform>(entity, "Transform");
+			/*transformComponent->Position = glm::vec3(0,3,0);*/
+			transformComponent->Scale = glm::vec3(3,3,3);
+			transformComponent->Orientation = glm::angleAxis(glm::pi<float>()/2, glm::vec3(1,0,0));
+			auto emitterComponent = AddComponent<Components::ParticleEmitter>(entity, "ParticleEmitter");
+			emitterComponent->SpawnCount = 2;
+			emitterComponent->SpawnFrequency = 0.01;
+			emitterComponent->SpreadAngle = glm::pi<float>()/4;
+			emitterComponent->UseGoalVelocity = false;
+			emitterComponent->LifeTime = 2.0;
+			emitterComponent->ScaleSpectrum.push_back(glm::vec3(0.1));
+			auto modelComponent = AddComponent<Components::Model>(entity, "Model");
+			modelComponent->ModelFile = "Models/Placeholders/PhysicsTest/PointLight.obj";
+			CommitEntity(entity);
+
+			auto particleEntity = CreateEntity(entity);
+			auto TEMP = AddComponent<Components::Transform>(particleEntity, "Transform");
+			TEMP->Scale = glm::vec3(0);
+			auto spriteComponent = AddComponent<Components::Sprite>(particleEntity, "Sprite");
+			spriteComponent->SpriteFile = "Models/Textures/Sprites/Dust.png";
+			emitterComponent->ParticleTemplate = particleEntity;
+
+			CommitEntity(particleEntity);
 		}
 
 		CommitEntity(tank);
@@ -528,6 +553,10 @@ void GameWorld::Initialize()
 		GetSystem<Systems::SoundSystem>("SoundSystem")->PlaySound(emitter);
 		CommitEntity(entity);
 	}*/
+
+	{
+		
+	}
 }
 
 void GameWorld::Update(double dt)
@@ -548,7 +577,7 @@ void GameWorld::RegisterSystems()
 	m_SystemFactory.Register("InputSystem", [this]() { return new Systems::InputSystem(this, m_EventBroker); });
 	m_SystemFactory.Register("DebugSystem", [this]() { return new Systems::DebugSystem(this, m_EventBroker); });
 	//m_SystemFactory.Register("CollisionSystem", [this]() { return new Systems::CollisionSystem(this); });
-	////m_SystemFactory.Register("ParticleSystem", [this]() { return new Systems::ParticleSystem(this); });
+	m_SystemFactory.Register("ParticleSystem", [this]() { return new Systems::ParticleSystem(this, m_EventBroker); });
 	//m_SystemFactory.Register("PlayerSystem", [this]() { return new Systems::PlayerSystem(this); });
 	m_SystemFactory.Register("FreeSteeringSystem", [this]() { return new Systems::FreeSteeringSystem(this, m_EventBroker); });
 	m_SystemFactory.Register("TankSteeringSystem", [this]() { return new Systems::TankSteeringSystem(this, m_EventBroker); });
@@ -564,7 +593,7 @@ void GameWorld::AddSystems()
 	AddSystem("InputSystem");
 	AddSystem("DebugSystem");
 	//AddSystem("CollisionSystem");
-	////AddSystem("ParticleSystem");
+	AddSystem("ParticleSystem");
 	//AddSystem("PlayerSystem");
 	AddSystem("FreeSteeringSystem");
 	AddSystem("TankSteeringSystem");

src/Renderer.cpp

@@ -274,10 +274,9 @@ void Renderer::DrawScene()
 		glm::mat4 billboardMatrix;
 		std::tie(texture, modelMatrix, billboardMatrix) = tuple;
 		
-		
 		//MVP = cameraMatrix * glm::inverse(glm::toMat4(m_Camera->Orientation()) * modelMatrix );
-		MVP = cameraMatrix * billboardMatrix * modelMatrix;
-		
+		MVP = cameraMatrix * modelMatrix * billboardMatrix;
+
 		depthMVP = depthCameraMatrix * modelMatrix;
 		glUniformMatrix4fv(glGetUniformLocation(m_ShaderProgram.GetHandle(), "MVP"), 1, GL_FALSE, glm::value_ptr(MVP));
 		glUniformMatrix4fv(glGetUniformLocation(m_ShaderProgram.GetHandle(), "DepthMVP"), 1, GL_FALSE, glm::value_ptr(depthMVP));
@@ -410,11 +409,12 @@ void Renderer::AddTextureToDraw(Texture* texture, glm::vec3 position, glm::quat
 
 	glm::vec3 camToParticle = glm::normalize(m_Camera->Position() - position);
 	glm::vec3 up = glm::vec3(0,1,0);
-	glm::vec3 rightVec = glm::cross(up, camToParticle);
+	glm::vec3 rightVec = glm::normalize(glm::cross(up, camToParticle));
+	glm::vec3 up2 = glm::normalize(glm::cross(camToParticle, rightVec));
 	
 	glm::mat4 billboardMatrix;
 	billboardMatrix[0] = glm::vec4(rightVec, 0);
-	billboardMatrix[1] = glm::vec4(up, 0);
+	billboardMatrix[1] = glm::vec4(up2, 0);
 	billboardMatrix[2] = glm::vec4(camToParticle, 0);
 	//billboardMatrix[3] = glm::vec4(position, 0);
 

src/Systems/ParticleSystem.cpp

@@ -4,6 +4,11 @@
 
 #include "World.h"
 
+void Systems::ParticleSystem::Initialize()
+{
+	m_TransformSystem = m_World->GetSystem<Systems::TransformSystem>("TransformSystem");
+}
+
 void Systems::ParticleSystem::Update(double dt)
 {
 	
@@ -19,16 +24,13 @@ void Systems::ParticleSystem::UpdateEntity(double dt, EntityID entity, EntityID
 	if(emitterComponent)
 	{
 		emitterComponent->TimeSinceLastSpawn += dt;
-		auto transformComponent = m_World->GetComponent<Components::Transform>(entity, "Transform");
+		auto emitterTransformComponent = m_World->GetComponent<Components::Transform>(entity, "Transform");
 		if(emitterComponent->TimeSinceLastSpawn > emitterComponent->SpawnFrequency)
 		{
 			SpawnParticles(entity);
 			emitterComponent->TimeSinceLastSpawn = 0;
 		}
 
-
-
-
 		std::list<ParticleData>::iterator it;
 		for(it = m_ParticleEmitter[entity].begin(); it != m_ParticleEmitter[entity].end();)
 		{
@@ -82,7 +84,7 @@ void Systems::ParticleSystem::UpdateEntity(double dt, EntityID entity, EntityID
 				}
 				
 				
-				transformComponent->Position +=  transformComponent->Velocity * (float)dt;
+				transformComponent->Position += transformComponent->Velocity * (float)dt;
 
 				it++;
 			}
@@ -101,6 +103,7 @@ void Systems::ParticleSystem::SpawnParticles(EntityID emitterID)
 {
 	auto emitterComponent = m_World->GetComponent<Components::ParticleEmitter>(emitterID, "ParticleEmitter");
 	auto emitterTransform = m_World->GetComponent<Components::Transform>(emitterID, "Transform");
+	glm::vec3 emitterPos = m_TransformSystem->AbsolutePosition(emitterID);
 	glm::quat emitterOrientation = emitterTransform->Orientation;
 
 	float tempSpeed =  4;
@@ -111,7 +114,7 @@ void Systems::ParticleSystem::SpawnParticles(EntityID emitterID)
 		auto ent = m_World->CloneEntity(emitterComponent->ParticleTemplate);
 
 		auto particleTransform = m_World->GetComponent<Components::Transform>(ent, "Transform");
-		particleTransform->Position = emitterTransform->Position;
+		particleTransform->Position = emitterPos;
 
 		particleTransform->Orientation = emitterOrientation;
 		//The emitter's orientation as "start value" times the default direction for emitter. Times the speed, and then rotate on x and y axis with the randomized spread angle. 

src/Systems/ParticleSystem.h

@@ -2,6 +2,7 @@
 #define ParticleSystem_h__
 
 #include "System.h"
+#include "Systems/TransformSystem.h"
 #include "Components/Transform.h"
 #include "Components/ParticleEmitter.h"
 #include "Components/Particle.h"
@@ -25,10 +26,13 @@ namespace Systems
 class ParticleSystem : public System
 {
 public:
-	ParticleSystem(World* world);
+	ParticleSystem(World* world, std::shared_ptr<::EventBroker> eventBroker)
+		: System(world, eventBroker) { }
+
 	void RegisterComponents(ComponentFactory* cf) override;
 	void Update(double dt) override;
 	void UpdateEntity(double dt, EntityID entity, EntityID parent) override;
+	void Initialize() override;
 private:
 	void SpawnParticles(EntityID emitterID);
 	float RandomizeAngle(float spreadAngle);
@@ -39,6 +43,7 @@ private:
 	void Billboard();
 	std::map<EntityID, std::list<ParticleData>> m_ParticleEmitter;
 	std::map<EntityID, double> m_TimeSinceLastSpawn;
+	std::shared_ptr<Systems::TransformSystem> m_TransformSystem;
 
 	
 };

vs11/Returngeance/Returngeance.vcxproj.filters

@@ -273,9 +273,6 @@
     <ClInclude Include="..\..\src\Components\Particle.h">
       <Filter>Particle System\Components</Filter>
     </ClInclude>
-    <ClInclude Include="..\..\src\Components\Sphere.h">
-      <Filter>Physics\Components</Filter>
-    </ClInclude>
     <ClInclude Include="..\..\src\GUI\Frame.h">
       <Filter>GUI</Filter>
     </ClInclude>