Method HandleUseEntity

src/ClientHandle.cpp:1338–1395

void cClientHandle::HandleUseEntity(int a_TargetEntityID, bool a_IsLeftClick)
{
	// TODO: Let plugins interfere via a hook
	
	// If it is a right click, call the entity's OnRightClicked() handler:
	if (!a_IsLeftClick)
	{
		class cRclkEntity : public cEntityCallback
		{
			cPlayer & m_Player;
			virtual bool Item(cEntity * a_Entity) override
			{
				if (cPluginManager::Get()->CallHookPlayerRightClickingEntity(m_Player, *a_Entity))
				{
					return false;
				}
				a_Entity->OnRightClicked(m_Player);
				return false;
			}
		public:
			cRclkEntity(cPlayer & a_Player) : m_Player(a_Player) {}
		} Callback (*m_Player);
		
		cWorld * World = m_Player->GetWorld();
		World->DoWithEntityByID(a_TargetEntityID, Callback);
		return;
	}

	// If it is a left click, attack the entity:
	class cDamageEntity : public cEntityCallback
	{
		virtual bool Item(cEntity * a_Entity) override
		{
			if (!a_Entity->GetWorld()->IsPVPEnabled())
			{
				// PVP is disabled, disallow players hurting other players:
				if (a_Entity->IsPlayer())
				{
					// Player is hurting another player which is not allowed when PVP is disabled so ignore it
					return true;
				}
			}
			a_Entity->TakeDamage(*m_Attacker);
			return false;
		}
	public:
		cPawn * m_Attacker;
	} Callback;

	Callback.m_Attacker = m_Player;

	cWorld * World = m_Player->GetWorld();
	if (World->DoWithEntityByID(a_TargetEntityID, Callback))
	{
		// Any kind of an attack implies food exhaustion
		m_Player->AddFoodExhaustion(0.3);
	}
}