Merge pull request #27 from teamfisk/ShootEvent

Shoot event

src/Game/Systems/WeaponSystem.cpp

@@ -0,0 +1,53 @@
+#include "Systems/WeaponSystem.h"
+
+WeaponSystem::WeaponSystem(EventBroker* eventBroker, IRenderer* renderer)
+    : System(eventBroker)
+    , ImpureSystem()
+    , m_Renderer(renderer)
+{
+    EVENT_SUBSCRIBE_MEMBER(m_EInputCommand, &WeaponSystem::OnInputCommand);
+    EVENT_SUBSCRIBE_MEMBER(m_EShoot, &WeaponSystem::OnShoot);
+}
+
+void WeaponSystem::Update(World* world, double dt)
+{
+    for (int i = m_EShootVector.size(); i > 0; i--)
+    {
+        //TODO: check if player has enough ammo and if weapon has a cooldown or not
+
+        //pick the object
+        PickData pickDataFromShot = m_Renderer->Pick(std::get<1>(m_EShootVector[i - 1]));
+        if (pickDataFromShot.Entity == EntityID_Invalid) {
+            m_EShootVector.erase(m_EShootVector.begin() + i - 1);
+            continue;
+        }
+        //if its a player, do PlayerDamage event
+        const bool hasPlayerComponent = world->HasComponent(pickDataFromShot.Entity, "Player");
+        if (hasPlayerComponent) {
+            Events::PlayerDamage ePlayerDamage;
+            //TODO: damage based on weapontype/class?
+            //TODO: multiple shots at the same time? (shotgunner)
+            ePlayerDamage.DamageAmount = 25;
+            ePlayerDamage.PlayerDamagedID = pickDataFromShot.Entity;
+            m_EventBroker->Publish(ePlayerDamage);
+        }
+        m_EShootVector.erase(m_EShootVector.begin() + i - 1);
+    }
+}
+
+bool WeaponSystem::OnInputCommand(const Events::InputCommand& e)
+{
+    if (e.Command == "PrimaryFire" && e.Value > 0) {
+        Events::Shoot eShoot;
+        eShoot.shooter = e.PlayerID;
+        m_EventBroker->Publish(eShoot);
+    }
+    return true;
+}
+bool WeaponSystem::OnShoot(const Events::Shoot& e) {
+    //screen center, based on current resolution!
+    Rectangle screenResolution = m_Renderer->Resolution();
+    glm::vec2 centerScreen = glm::vec2(screenResolution.Width / 2, screenResolution.Height / 2);
+    m_EShootVector.push_back(std::make_pair(e.shooter, centerScreen));
+    return true;
+}