tleety
776 lines
28 KiB
C++
Executable File
776 lines
28 KiB
C++
Executable File
#include "PrecompiledHeader.h"
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#include "Physics/PhysicsSystem.h"
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void dd::Systems::PhysicsSystem::RegisterComponents(ComponentFactory* cf)
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{
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cf->Register<Components::CircleShape>();
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//TODO: REGISTER PHYSICS COMPONENTS HERE
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}
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void dd::Systems::PhysicsSystem::Initialize()
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{
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std::random_device rd;
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gen = std::mt19937(rd());
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m_DestructionListener = new DestructionListener(this);
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m_ContactListener = new ContactListener(this);
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m_PhysicsWorld = new b2World(m_Gravity);
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m_ParticleContactDisabler = new ParticleContactDisabler();
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m_PhysicsWorld->SetContactListener(m_ContactListener);
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m_PhysicsWorld->SetContactFilter(m_ParticleContactDisabler);
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m_PhysicsWorld->SetDestructionListener(m_DestructionListener);
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InitializeWater();
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EVENT_SUBSCRIBE_MEMBER(m_SetImpulse, &PhysicsSystem::SetImpulse);
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EVENT_SUBSCRIBE_MEMBER(m_EPause, &PhysicsSystem::OnPause);
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EVENT_SUBSCRIBE_MEMBER(m_EStageCleared, &PhysicsSystem::OnStageCleared);
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EVENT_SUBSCRIBE_MEMBER(m_ECreateParticleSequence, &PhysicsSystem::CreateParticleSequence);
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EVENT_SUBSCRIBE_MEMBER(m_EContact, &PhysicsSystem::OnContact);
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}
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void dd::Systems::PhysicsSystem::InitializeWater()
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{
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float radius = 0.13f;
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float gravityScale = 1.0f;
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b2ParticleSystemDef m_ParticleSystemDef;
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m_ParticleSystemDef.radius = radius;
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m_ParticleSystemDef.gravityScale = gravityScale;
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m_ParticleSystemDef.density = 4.f;
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m_WaterParticleSystem = m_PhysicsWorld->CreateParticleSystem(&m_ParticleSystemDef);
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}
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bool dd::Systems::PhysicsSystem::SetImpulse(const Events::SetImpulse &event)
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{
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auto it = m_EntitiesToBodies.find(event.Entity);
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if(it == m_EntitiesToBodies.end()) {
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LOG_ERROR("Entity: %i, Tried to set an impulse on a body that does not exsist", event.Entity);
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return false;
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}
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b2Vec2 impulse;
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impulse.x = event.Impulse.x;
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impulse.y = event.Impulse.y;
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b2Vec2 point;
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point.x = event.Point.x;
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point.y = event.Point.y;
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Impulse i;
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i.Body = it->second;
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i.Vector = impulse;
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i.Point = point;
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m_Impulses.push_back(i);
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return true;
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}
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void dd::Systems::PhysicsSystem::SyncEntitiesWithBodies()
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{
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for (auto i : m_EntitiesToBodies) {
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EntityID entity = i.first;
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b2Body* body = i.second;
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if (body == nullptr) {
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LOG_ERROR("This body should not exist, please fix this");
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continue;
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}
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auto transformComponent = m_World->GetComponent<Components::Transform>(entity);
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if (! transformComponent) {
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continue;
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LOG_ERROR("RigidBody with no TransformComponent");
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}
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auto physicsComponent = m_World->GetComponent<Components::Physics>(entity);
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if (! physicsComponent) {
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continue;
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LOG_ERROR("RigidBody with no PhysicsComponent");
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}
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if (m_World->GetEntityParent(entity) == 0) { //TODO: Make this work with childs too
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b2Vec2 position;
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position.x = transformComponent->Position.x;
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position.y = transformComponent->Position.y;
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float angle = glm::eulerAngles(transformComponent->Orientation).z;
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body->SetTransform(position, angle);
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body->SetLinearVelocity(b2Vec2(transformComponent->Velocity.x, transformComponent->Velocity.y));
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body->SetGravityScale(physicsComponent->GravityScale);
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b2Filter filter;
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filter.categoryBits = physicsComponent->Category;
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filter.maskBits = physicsComponent->Mask;
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body->GetFixtureList()->SetFilterData(filter);
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if (physicsComponent->CollisionType == CollisionType::Type::Static) {
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body->SetType(b2_staticBody);
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}
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else if (physicsComponent->CollisionType == CollisionType::Type::Dynamic) {
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body->SetType(b2_dynamicBody);
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}
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else if (physicsComponent->CollisionType == CollisionType::Type::Kinematic) {
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body->SetType(b2_dynamicBody);
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}
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}
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}
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}
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void dd::Systems::PhysicsSystem::SyncBodiesWithEntities()
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{
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for (auto i : m_BodiesToEntities) {
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b2Body* body = i.first;
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EntityID entity = i.second;
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if (body == nullptr) {
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LOG_ERROR("This body should not exist, please fix this");
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continue;
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}
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auto transformComponent = m_World->GetComponent<Components::Transform>(entity);
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if (! transformComponent) {
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continue;
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LOG_ERROR("RigidBody with no TransformComponent");
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}
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auto physicsComponent = m_World->GetComponent<Components::Physics>(entity);
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if (! physicsComponent) {
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continue;
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LOG_ERROR("RigidBody with no PhysicsComponent");
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}
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auto parent = m_World->GetEntityParent(entity);
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if (parent == 0) {
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auto physicsComponent = m_World->GetComponent<Components::Physics>(entity);
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if (physicsComponent->Calculate) { //TODO: REPLACE THIS WITH PARTICLE COLLISION FILTERS
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transformComponent->Position.x = transformComponent->Position.x + (transformComponent->Velocity.x * m_TimeStep);
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transformComponent->Position.y = transformComponent->Position.y + (transformComponent->Velocity.y * m_TimeStep);
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} else {
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b2Vec2 position = body->GetPosition();
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transformComponent->Position.x = position.x;
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transformComponent->Position.y = position.y;
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float angle = body->GetAngle();
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transformComponent->Orientation = glm::quat(glm::vec3(0, 0, angle));
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b2Vec2 velocity = body->GetLinearVelocity();
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transformComponent->Velocity.x = velocity.x;
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transformComponent->Velocity.y = velocity.y;
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}
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}
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}
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}
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void dd::Systems::PhysicsSystem::Update(double dt)
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{
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if (m_Pause) {
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return;
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}
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if (m_Travelling) {
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if (m_DistanceTravelled > 12.f) {
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m_DistanceTravelled = 0;
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m_Travelling = false;
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}
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m_DistanceTravelled += 6.0f * dt;
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}
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m_Accumulator += dt;
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while(m_Accumulator >= m_TimeStep)
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{
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UpdateParticleEmitters(dt);
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SyncEntitiesWithBodies();
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//Apply Impulses Must be done after SyncEntitiesWithBodies
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for (auto i : m_Impulses) {
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i.Body->ApplyLinearImpulse(i.Vector, i.Point, true);
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}
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m_Impulses.clear();
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//Update the PhysicsWorld
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m_PhysicsWorld->Step(m_TimeStep, m_VelocityIterations, m_PositionIterations);
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SyncBodiesWithEntities();
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//water
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b2Vec2 *positionBuffer = m_WaterParticleSystem->GetPositionBuffer();
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for (auto i : m_EntitiesToWaterParticleHandle){
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EntityID entity = i.first;
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const b2ParticleHandle *particleH = i.second;
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b2Vec2 positionB2 = positionBuffer[particleH->GetIndex()];
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glm::vec2 position = glm::vec2(positionB2.x, positionB2.y);
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EntityID entityParent = m_World->GetEntityParent(entity);
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glm::vec3 parentTransform = glm::vec3(0.f);
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if(entityParent) {
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auto tp = m_World->GetComponent<Components::Transform>(entityParent);
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parentTransform = tp->Position;
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}
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auto transform = m_World->GetComponent<Components::Transform>(entity);
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transform->Position = glm::vec3(position.x - parentTransform.x, position.y - parentTransform.y, 0);
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}
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//Normal particles
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for ( int e = 0; e < m_EntitiesToParticleHandle.size(); e++) {
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b2Vec2 *positionBuffer = m_ParticleEmitters.ParticleSystem[e]->GetPositionBuffer();
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if(!positionBuffer) {
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break;
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}
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for (auto i : m_EntitiesToParticleHandle[e]){
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EntityID entity = i.first;
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const b2ParticleHandle *particleH = i.second;
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b2Vec2 positionB2 = positionBuffer[particleH->GetIndex()];
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glm::vec2 position = glm::vec2(positionB2.x, positionB2.y);
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EntityID entityParent = m_World->GetEntityParent(entity);
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glm::vec3 parentTransform = glm::vec3(0.f);
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if(entityParent) {
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auto tp = m_World->GetComponent<Components::Transform>(entityParent);
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parentTransform = tp->Position;
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}
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auto transform = m_World->GetComponent<Components::Transform>(entity);
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transform->Position = glm::vec3(position.x, position.y, transform->Position.z);
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}
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}
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m_Accumulator -= dt;
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}
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}
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void dd::Systems::PhysicsSystem::UpdateEntity(double dt, EntityID entity, EntityID parent)
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{
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if (m_Travelling) {
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auto transform = m_World->GetComponent<Components::Transform>(entity);
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if (transform != nullptr) {
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if (!transform->Sticky) {
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transform->Position.y -= 6.0f * dt;
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}
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} else {
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transform->Position.y -= 6.0f * dt;
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}
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}
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auto particle = m_World->GetComponent<Components::Particle>(entity);
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auto pTemplate = m_World->GetComponent<Components::Template>(entity);
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if (particle && !pTemplate) {
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particle->LifeTime -= dt;
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if (particle->LifeTime <= 0) {
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for (int i = 0; i < m_EntitiesToParticleHandle.size(); i++) {
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const b2ParticleHandle* handle = m_EntitiesToParticleHandle[i][entity];
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std::unordered_map<EntityID, const b2ParticleHandle*>::iterator iter1;
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std::unordered_map<const b2ParticleHandle*,EntityID>::iterator iter2;
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iter1 = m_EntitiesToParticleHandle[i].find(entity);
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iter2 = m_ParticleHandleToEntities[i].find(handle);
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if (iter1 != m_EntitiesToParticleHandle[i].end()) {
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m_EntitiesToParticleHandle[i].erase(iter1);
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}
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if (iter2 != m_ParticleHandleToEntities[i].end()) {
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m_ParticleHandleToEntities[i].erase(iter2);
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}
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m_World->RemoveEntity(entity);
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}
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}
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auto sprite = m_World->GetComponent<Components::Sprite>(entity);
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sprite->Color.w = particle->LifeTime;
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}
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auto emitter = m_World->GetComponent<Components::ParticleEmitter>(entity);
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if (emitter) {
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EntityID emitterParent = emitter->Parent;
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if (emitterParent != 0) {
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auto emitterTransform = m_World->GetComponent<Components::Transform>(entity);
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auto parentTransform = m_World->GetComponent<Components::Transform>(emitterParent);
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if (emitterTransform && parentTransform) {
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emitterTransform->Position = parentTransform->Position;
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}
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}
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}
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}
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bool dd::Systems::PhysicsSystem::OnPause(const dd::Events::Pause &event)
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{
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if (event.Type != "PhysicsSystem" && event.Type != "All") {
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return false;
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}
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if (m_Pause) {
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m_Pause = false;
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} else {
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m_Pause = true;
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}
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return true;
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}
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void dd::Systems::PhysicsSystem::OnEntityCommit(EntityID entity)
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{
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auto physicsComponent = m_World->GetComponent<Components::Physics>(entity);
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auto waterComponent = m_World->GetComponent<Components::WaterVolume>(entity);
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auto particleEmitterComponent = m_World->GetComponent<Components::ParticleEmitter>(entity);
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if (physicsComponent && waterComponent) {
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LOG_ERROR("Entity has both water and physics component, this is illegal. The police has been alerted.");
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return;
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}
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if (physicsComponent && particleEmitterComponent) {
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LOG_ERROR("Entity has both particle and physics component, this is illegal. The police has been alerted.");
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return;
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}
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if (physicsComponent) {
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auto it = m_EntitiesToBodies.find(entity);
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if(it == m_EntitiesToBodies.end()) {
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CreateBody(entity);
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} else {
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LOG_ERROR("Tried to commit a body that already exists");
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}
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} else if (waterComponent) {
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CreateParticleGroup(entity);
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} else if (particleEmitterComponent) {
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CreateParticleEmitter(entity);
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}
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}
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void dd::Systems::PhysicsSystem::OnEntityRemoved(EntityID entity)
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{
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auto it = m_EntitiesToBodies.find(entity);
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if(it != m_EntitiesToBodies.end()) {
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it->second->GetWorld()->DestroyBody(it->second);
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m_BodiesToEntities.erase(it->second);
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m_EntitiesToBodies.erase(entity);
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}
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}
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bool dd::Systems::PhysicsSystem::OnStageCleared(const dd::Events::StageCleared &event)
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{
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if (event.ClearedStage < 5) {
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m_Travelling = true;
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}
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return true;
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}
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void dd::Systems::PhysicsSystem::CreateBody(EntityID entity)
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{
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auto physicsComponent = m_World->GetComponent<Components::Physics>(entity);
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if(!physicsComponent){
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LOG_ERROR("No PhysicsComponent in CreateBody");
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return;
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}
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auto transformComponent = m_World->GetComponent<Components::Transform>(entity);
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if(!transformComponent) {
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LOG_ERROR("No TransformComponent in CreateBody");
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return;
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}
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auto absoluteTransform = m_World->GetSystem<Systems::TransformSystem>()->AbsoluteTransform(entity);
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b2BodyDef bodyDef;
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bodyDef.position.Set(absoluteTransform.Position.x, absoluteTransform.Position.y);
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bodyDef.angle = -glm::eulerAngles(absoluteTransform.Orientation).z;
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if (physicsComponent->CollisionType == CollisionType::Type::Static) {
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bodyDef.type = b2_staticBody;
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} else if (physicsComponent->CollisionType == CollisionType::Type::Dynamic) {
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bodyDef.type = b2_dynamicBody;
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} else if (physicsComponent->CollisionType == CollisionType::Type::Kinematic) {
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bodyDef.type = b2_dynamicBody;
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}
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b2Body* body = m_PhysicsWorld->CreateBody(&bodyDef);
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b2Shape* pShape;
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auto rectangleComponent = m_World->GetComponent<Components::RectangleShape>(entity);
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if (rectangleComponent) {
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b2PolygonShape* bShape = new b2PolygonShape();
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bShape->SetAsBox(rectangleComponent->Dimensions.x/2.f, rectangleComponent->Dimensions.y/2.f);
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pShape = bShape;
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} else {
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auto circleComponent = m_World->GetComponent<Components::CircleShape>(entity);
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if (circleComponent) {
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pShape = new b2CircleShape();
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pShape->m_radius = circleComponent->Radius;
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}
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}
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b2FixtureDef fixtureDef;
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fixtureDef.shape = pShape;
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fixtureDef.filter.categoryBits = physicsComponent->Category;
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fixtureDef.filter.maskBits = physicsComponent->Mask;
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fixtureDef.shape = pShape;
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fixtureDef.density = physicsComponent->Density;
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fixtureDef.restitution = 1.0f;
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fixtureDef.friction = 0.0f;
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body->CreateFixture(&fixtureDef);
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delete pShape;
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body->SetGravityScale(physicsComponent->GravityScale);
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m_EntitiesToBodies.insert(std::make_pair(entity, body));
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m_BodiesToEntities.insert(std::make_pair(body, entity));
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}
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void dd::Systems::PhysicsSystem::CreateParticleGroup(EntityID e)
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{
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auto transform = m_World->GetComponent<Components::Transform>(e);
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if (!transform) {
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LOG_ERROR("No Transform component in CreateParticleGroup");
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}
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b2ParticleGroupDef pd;
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b2PolygonShape shape;
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auto water = m_World->GetComponent<Components::WaterVolume>(e);
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if (water) {
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shape.SetAsBox(transform->Scale.x/2.f, transform->Scale.y/2.f);
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pd.shape = &shape;
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pd.flags = b2_tensileParticle;
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pd.position.Set(transform->Position.x, transform->Position.y);
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t_ParticleGroup.push_back(m_WaterParticleSystem->CreateParticleGroup(pd));
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b2Vec2* t_ParticlePositions = m_WaterParticleSystem->GetPositionBuffer();
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for(int i = 0; i < m_WaterParticleSystem->GetParticleCount(); i++){
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{
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auto t_waterparticle = m_World->CreateEntity(e);
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auto transformChild = m_World->AddComponent<Components::Transform>(t_waterparticle);
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transformChild->Position = glm::vec3(t_ParticlePositions[i].x - transform->Position.x, t_ParticlePositions[i].y - transform->Position.y, -9.5f);
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transformChild->Scale = glm::vec3(m_WaterParticleSystem->GetRadius())/transform->Scale;
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m_World->CommitEntity(t_waterparticle);
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m_EntitiesToWaterParticleHandle.insert(std::make_pair(t_waterparticle, m_WaterParticleSystem->GetParticleHandleFromIndex(i)));
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m_WaterParticleHandleToEntities.insert(std::make_pair(m_WaterParticleSystem->GetParticleHandleFromIndex(i), t_waterparticle));
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}
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}
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}
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}
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void dd::Systems::PhysicsSystem::UpdateParticleEmitters(double dt)
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{
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std::vector<EntityID> emittersToDelete;
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int pSizeTest = 0; //For debugging, delete this
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int psListSize = 0;
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for (int i = 0; i < m_ParticleEmitters.ParticleSystem.size(); i++) {
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auto e = m_ParticleEmitters.ParticleEmitter[i];
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auto pt = m_ParticleEmitters.ParticleTemplate[i];
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auto ps = m_ParticleEmitters.ParticleSystem[i];
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pSizeTest += ps->GetParticleCount();
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psListSize++;
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auto emitter = m_World->GetComponent<Components::ParticleEmitter>(e);
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auto particleTemplate = m_World->GetComponent<Components::Particle>(pt);
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if(!emitter) {
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LOG_INFO("ParticleEmitter Component is nil");
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continue;
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}
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if(!particleTemplate) {
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LOG_INFO("ParticleTemplate Component is nil.");
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continue;
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}
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auto emitterTransform = m_World->GetComponent<Components::Transform>(e);
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emitterTransform->Orientation = glm::rotate(glm::quat(), 3.f, glm::vec3(0.f, 0.f, -1.f));
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|
|
emitter->TimeSinceLastSpawn += dt;
|
|
emitter->LifeTime -= dt;
|
|
|
|
if (emitter->LifeTime <= 0 || emitter->NumberOfTicks <= 0) {
|
|
emittersToDelete.push_back(e);
|
|
continue;
|
|
}
|
|
if(emitter->TimeSinceLastSpawn < emitter->SpawnRate || emitter->NumberOfTicks < 1) {
|
|
continue;
|
|
}
|
|
emitter->NumberOfTicks--;
|
|
emitter->TimeSinceLastSpawn -= emitter->SpawnRate;
|
|
auto templateTransform = m_World->GetComponent<Components::Transform>(pt);
|
|
b2ParticleDef particleDef;
|
|
for ( int j = 0; j < emitter->ParticlesPerTick; j++) {
|
|
particleDef.flags = particleTemplate->Flags;
|
|
//particleDef.color TODO: Implement this if we want color mixing and shit.
|
|
particleDef.lifetime = particleTemplate->LifeTime;
|
|
float eAngle = emitter->EmittingAngle;
|
|
float halfSpread = emitter->Spread / 2;
|
|
|
|
std::uniform_real_distribution<float> dis(eAngle - halfSpread, eAngle + halfSpread);
|
|
float pAngle = dis(gen);
|
|
std::uniform_real_distribution<float> dis2(0.3, 1.5);
|
|
float speedMultiplier = dis2(gen);
|
|
glm::vec2 unitVec = glm::normalize(glm::vec2(glm::cos(pAngle), glm::sin(pAngle)));
|
|
glm::vec2 vel = unitVec * emitter->Speed * (float)dt * speedMultiplier * 0.5f;
|
|
particleDef.velocity = b2Vec2(vel.x, vel.y);
|
|
particleDef.position = b2Vec2(emitterTransform->Position.x, emitterTransform->Position.y);
|
|
|
|
|
|
auto particle = m_World->CloneEntity(pt, 0);
|
|
m_World->RemoveComponent<Components::Template>(particle);
|
|
auto transform2 = m_World->GetComponent<Components::Transform>(particle);
|
|
|
|
std::uniform_real_distribution<float> dist(0, 1);
|
|
float zDistribution = dist(gen);
|
|
transform2->Position = glm::vec3(emitterTransform->Position.x, emitterTransform->Position.y, -9.5f + zDistribution);
|
|
transform2->Scale = glm::vec3(particleTemplate->Radius * 2.f / speedMultiplier, particleTemplate->Radius * 2.f / speedMultiplier, 1);
|
|
|
|
|
|
auto b2Particle = ps->CreateParticle(particleDef);
|
|
|
|
auto b2ParticleHandle = ps->GetParticleHandleFromIndex(b2Particle);
|
|
m_EntitiesToParticleHandle[i].insert(std::make_pair(particle, b2ParticleHandle));
|
|
m_ParticleHandleToEntities[i].insert(std::make_pair(b2ParticleHandle, particle));
|
|
|
|
|
|
}
|
|
|
|
}
|
|
// system("cls");
|
|
// std::cout << "Particles living: " << pSizeTest << std::endl;
|
|
// std::cout << "particle systems: " << psListSize << std::endl;
|
|
// int entHandles = 0;
|
|
// for (int i = 0; i < m_EntitiesToParticleHandle.size(); i++)
|
|
// entHandles += m_EntitiesToParticleHandle[i].size();
|
|
// std::cout << "Entities and handles: " << entHandles << std::endl;
|
|
// LOG_INFO("Particles living: %i", pSizeTest);
|
|
// LOG_INFO("Particle systems: %i", psListSize);
|
|
// int entHandles = 0;
|
|
// for (int i = 0; i < m_EntitiesToParticleHandle.size(); i++)
|
|
// entHandles += m_EntitiesToParticleHandle[i].size();
|
|
// LOG_INFO("Entities and handles: %i", entHandles);
|
|
|
|
|
|
for (int i = 0; i < emittersToDelete.size(); i++)
|
|
{
|
|
EntityID ent = emittersToDelete[i];
|
|
int key;
|
|
for(key = 0; key < m_ParticleEmitters.ParticleEmitter.size(); key++) {
|
|
if (m_ParticleEmitters.ParticleEmitter[key] == ent) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (m_ParticleEmitters.ParticleSystem[key]->GetParticleCount() == 0 && key <= m_ParticleEmitters.ParticleSystem.size()) {
|
|
m_World->RemoveEntity(ent);
|
|
m_PhysicsWorld->DestroyParticleSystem(m_ParticleEmitters.ParticleSystem[key]);
|
|
m_ParticleEmitters.ParticleSystem.erase(m_ParticleEmitters.ParticleSystem.begin() + key);
|
|
m_ParticleEmitters.ParticleEmitter.erase(m_ParticleEmitters.ParticleEmitter.begin() + key);
|
|
m_ParticleEmitters.ParticleTemplate.erase(m_ParticleEmitters.ParticleTemplate.begin() + key);
|
|
m_EntitiesToParticleHandle.erase(m_EntitiesToParticleHandle.begin() + key);
|
|
m_ParticleHandleToEntities.erase(m_ParticleHandleToEntities.begin() + key);
|
|
}
|
|
}
|
|
|
|
|
|
|
|
int stp = 0;
|
|
for (auto ts : m_EntitiesToParticleHandle)
|
|
{
|
|
stp += ts.size();
|
|
}
|
|
}
|
|
|
|
bool dd::Systems::PhysicsSystem::CreateParticleSequence(const Events::CreateParticleSequence &event)
|
|
{
|
|
//Creating Emitter
|
|
EntityID emitter = m_World->CreateEntity();
|
|
|
|
auto emitterTransform = m_World->AddComponent<Components::Transform>(emitter);
|
|
auto particleEmitter= m_World->AddComponent<Components::ParticleEmitter>(emitter);
|
|
|
|
if (event.parent != 0) {
|
|
particleEmitter->Parent = event.parent;
|
|
}
|
|
|
|
emitterTransform->Position = event.Position;
|
|
particleEmitter->GravityScale = event.GravityScale;
|
|
particleEmitter->SpawnRate = event.SpawnRate;
|
|
particleEmitter->NumberOfTicks = event.NumberOfTicks;
|
|
particleEmitter->Speed = event.Speed;
|
|
particleEmitter->ParticlesPerTick = event.ParticlesPerTick;
|
|
particleEmitter->Spread = event.Spread;
|
|
particleEmitter->EmittingAngle = event.EmittingAngle;
|
|
particleEmitter->LifeTime = event.EmitterLifeTime;
|
|
|
|
{
|
|
//Creating Particle Template
|
|
auto particle = m_World->CreateEntity(emitter);
|
|
auto particleTransform = m_World->AddComponent<Components::Transform>(particle);
|
|
auto sprite = m_World->AddComponent<Components::Sprite>(particle);
|
|
auto particleComponent = m_World->AddComponent<Components::Particle>(particle);
|
|
m_World->AddComponent<Components::Template>(particle);
|
|
|
|
particleTransform->Position = emitterTransform->Position;
|
|
sprite->SpriteFile = event.SpriteFile;
|
|
sprite->Color = event.Color;
|
|
particleComponent->LifeTime = event.ParticleLifeTime;
|
|
particleComponent->Flags = event.Flags;
|
|
particleComponent->Radius = event.Radius;
|
|
}
|
|
m_World->CommitEntity(emitter);
|
|
return true;
|
|
}
|
|
|
|
void dd::Systems::PhysicsSystem::CreateParticleEmitter(EntityID entity)
|
|
{
|
|
auto childEntities = m_World->GetEntityChildren(entity);
|
|
if (childEntities.empty()) {
|
|
LOG_ERROR("Particle Emitter does not have any child. Please adopt one or this will not work.");
|
|
return;
|
|
}
|
|
int pf = 0;
|
|
dd::Components::Particle* particle;
|
|
EntityID childEntity;
|
|
for ( auto c : childEntities ) {
|
|
auto p = m_World->GetComponent<Components::Particle>(c);
|
|
auto particleTemplate = m_World->GetComponent<Components::Template>(c);
|
|
if (!p) {
|
|
continue;
|
|
LOG_WARNING("ParticleEmitter's Child is not a particle.");
|
|
}
|
|
if(!particleTemplate) {
|
|
LOG_ERROR("ParticleEmitter's particleChild is not a template.");
|
|
continue;
|
|
}
|
|
if (pf != 0) {
|
|
LOG_WARNING("ParticleEmitter has more than one child that is a particleTemplate, only the first one is used.");
|
|
break;
|
|
}
|
|
childEntity = c;
|
|
particle = p;
|
|
pf++;
|
|
}
|
|
//TODO: Skicka med fler flaggor till particlesystemet;
|
|
|
|
m_ParticleEmitters.ParticleSystem.push_back(CreateParticleSystem(particle->Radius, 0.f, 0));
|
|
m_ParticleEmitters.ParticleEmitter.push_back(entity);
|
|
m_ParticleEmitters.ParticleTemplate.push_back(childEntity);
|
|
}
|
|
|
|
|
|
b2ParticleSystem* dd::Systems::PhysicsSystem::CreateParticleSystem(float radius, float gravityScale, int maxCount)
|
|
{
|
|
std::unordered_map<EntityID, const b2ParticleHandle*> m1;
|
|
std::unordered_map<const b2ParticleHandle*, EntityID> m2;
|
|
m_EntitiesToParticleHandle.push_back(m1);
|
|
m_ParticleHandleToEntities.push_back(m2);
|
|
|
|
b2ParticleSystemDef m_ParticleSystemDef;
|
|
m_ParticleSystemDef.maxCount = maxCount;
|
|
m_ParticleSystemDef.radius = radius;
|
|
m_ParticleSystemDef.gravityScale = gravityScale;
|
|
m_ParticleSystemDef.destroyByAge = true;
|
|
|
|
return m_PhysicsWorld->CreateParticleSystem(&m_ParticleSystemDef);
|
|
}
|
|
|
|
bool dd::Systems::PhysicsSystem::OnContact(const dd::Events::Contact &event)
|
|
{
|
|
//Check if it is a brick colliding
|
|
auto brick = m_World->GetComponent<Components::Brick>(event.Entity1);
|
|
Components::Model* model;
|
|
|
|
if (!brick) {
|
|
brick = m_World->GetComponent<Components::Brick>(event.Entity2);
|
|
if (!brick) {
|
|
return false;
|
|
}
|
|
else {
|
|
model = m_World->GetComponent<Components::Model>(event.Entity2);
|
|
}
|
|
}
|
|
else {
|
|
model = m_World->GetComponent<Components::Model>(event.Entity1);
|
|
}
|
|
|
|
//Spawn a particle when a brick collides with somthing
|
|
Events::CreateParticleSequence e;
|
|
|
|
|
|
e.EmitterLifeTime = 3;
|
|
e.EmittingAngle = glm::half_pi<float>();
|
|
e.Spread = 0.f;
|
|
e.NumberOfTicks = 1;
|
|
e.ParticleLifeTime = 1.f;
|
|
e.ParticlesPerTick = 1;
|
|
e.Position = glm::vec3(event.IntersectionPoint.x, event.IntersectionPoint.y, -7);
|
|
e.Color = glm::vec4(1.f);
|
|
e.Radius = 1.f;
|
|
e.Speed = 0;
|
|
|
|
if (brick->Type == 1 || brick->Type == 0)
|
|
{
|
|
e.EmitterLifeTime = 4;
|
|
e.EmittingAngle = glm::half_pi<float>();
|
|
e.Spread = 0.5f;
|
|
e.NumberOfTicks = 1;
|
|
e.ParticleLifeTime = 1.f;
|
|
e.ParticlesPerTick = 15;
|
|
e.Position = glm::vec3(event.IntersectionPoint.x, event.IntersectionPoint.y, -10);
|
|
e.Radius = 0.2f;
|
|
e.SpriteFile = "Textures/Particles/Cloud_Particle.png";
|
|
e.Color = model->Color + glm::vec4(0.5f);
|
|
e.Speed = 100;
|
|
} else if (brick->Type == 2) {
|
|
e.SpriteFile = "Textures/PowerUps/Friends.png";
|
|
} else if (brick->Type == 3) {
|
|
e.SpriteFile = "Textures/PowerUps/Saviour.png";
|
|
} else if (brick->Type == 4) {
|
|
e.SpriteFile = "Textures/PowerUps/Sticky.png";
|
|
} else if (brick->Type == 5) {
|
|
e.SpriteFile = "Textures/PowerUps/InkBlaster.png";
|
|
} else if (brick->Type == 6) {
|
|
e.SpriteFile = "Textures/PowerUps/RealeaseTheKraken.png";
|
|
}
|
|
|
|
EventBroker->Publish(e);
|
|
return true;
|
|
|
|
|
|
}
|
|
|
|
|
|
dd::Systems::PhysicsSystem::~PhysicsSystem()
|
|
{
|
|
for (auto i = m_BodiesToEntities.begin(); i != m_BodiesToEntities.end(); i++) {
|
|
b2Body* body = i->first;
|
|
body->GetWorld()->DestroyBody(body);
|
|
//delete body;
|
|
}
|
|
m_BodiesToEntities.clear();
|
|
m_EntitiesToBodies.clear();
|
|
m_Impulses.clear();
|
|
|
|
//TODO:REMOVE PARTICLE SYSTEMS
|
|
|
|
if (m_ContactListener != nullptr) {
|
|
delete m_ContactListener;
|
|
m_ContactListener = nullptr;
|
|
}
|
|
|
|
if (m_PhysicsWorld != nullptr) {
|
|
delete m_PhysicsWorld;
|
|
m_PhysicsWorld = nullptr;
|
|
}
|
|
}
|