Jace
a6548a72b3
# Conflicts: # include/Engine/Collision/CollidableOctreeSystem.h # include/Engine/Collision/CollisionSystem.h # include/Engine/Collision/TriggerSystem.h # include/Engine/Rendering/RenderSystem.h # include/Game/Systems/PlayerSystem.h # resources/Schema/Components/Physics.xsd # resources/Schema/Types/Entity.xsd # src/Engine/Rendering/RenderSystem.cpp # src/Engine/Rendering/Renderer.cpp # src/Game/Game.cpp # src/Game/Systems/HealthSystem.cpp # src/Game/Systems/PlayerSystem.cpp # src/Tests/OctTreeTestGameClass.cpp
63 lines
2.8 KiB
C++
63 lines
2.8 KiB
C++
#include "Systems/HealthSystem.h"
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HealthSystem::HealthSystem(World* m_World, EventBroker* eventBroker)
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: System(m_World, eventBroker)
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, PureSystem("Health")
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{
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//subscribe/listenTo playerdamage,healthpickup events (using the eventBroker)
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EVENT_SUBSCRIBE_MEMBER(m_EPlayerDamage, &HealthSystem::OnPlayerDamaged);
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EVENT_SUBSCRIBE_MEMBER(m_EPlayerHealthPickup, &HealthSystem::OnPlayerHealthPickup);
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}
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void HealthSystem::UpdateComponent(EntityWrapper& entity, ComponentWrapper& component, double dt)
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{
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//if entityID of health is 9 then the players ID is also 9 (player,health are connected to the same entity)
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ComponentWrapper player = m_World->GetComponent(component.EntityID, "Player");
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double maxHealth = (double)component["MaxHealth"];
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//process the DeltaHealthVector and change the entitys health accordingly
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for (size_t i = m_DeltaHealthVector.size(); i > 0; i--)
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{
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auto deltaHP = m_DeltaHealthVector[i - 1];
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//if we have a healthchange for the current player and health is greater than 0, then apply it
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if (std::get<0>(deltaHP) == component.EntityID && (double)component["Health"] > 0.0f) {
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//get the deltaHP value from the tuple and make sure you dont get more than maxHealth
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double newHealth = std::min((double)component["Health"] + (double)std::get<1>(deltaHP), maxHealth);
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component["Health"] = newHealth;
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m_DeltaHealthVector.erase(m_DeltaHealthVector.begin() + i - 1);
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//check if health is <= 0
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if ((double)component["Health"] <= 0.0f) {
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component["Health"] = 0.0;
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//publish death event
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Events::PlayerDeath e;
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e.PlayerID = component.EntityID;
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m_EventBroker->Publish(e);
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//clear the remaining hpDeltas for the dead player
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for (size_t j = m_DeltaHealthVector.size(); j > 0; j--)
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{
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if (std::get<0>(m_DeltaHealthVector[j - 1]) == component.EntityID)
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m_DeltaHealthVector.erase(m_DeltaHealthVector.begin() + j - 1);
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}
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//delete the player and break the loop
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m_World->DeleteEntity(entity.ID);
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break;
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}
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}
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}
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}
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bool HealthSystem::OnPlayerDamaged(const Events::PlayerDamage& e)
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{
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//save the changed HP to a vector. it will be taken care of in UpdateComponent
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m_DeltaHealthVector.push_back(std::make_tuple(e.PlayerDamagedID, -e.DamageAmount));
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return true;
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}
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bool HealthSystem::OnPlayerHealthPickup(const Events::PlayerHealthPickup& e)
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{
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//save the changed HP to a vector. it will be taken care of in UpdateComponent
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m_DeltaHealthVector.push_back(std::make_tuple(e.PlayerHealedID, e.HealthAmount));
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return true;
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}
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