From 63b7acc90c4a5c9a6e61c2902c251da34fb125e1 Mon Sep 17 00:00:00 2001
From: Samuel Barney <samjbarney@gmail.com>
Date: Wed, 20 Aug 2014 08:36:42 -0600
Subject: Added new component files. Updated the CMakeLists files

---
 src/Mobs/Components/AIAggresssiveComponent.cpp | 155 +++++++++++++++++++++++++
 1 file changed, 155 insertions(+)
 create mode 100644 src/Mobs/Components/AIAggresssiveComponent.cpp

(limited to 'src/Mobs/Components/AIAggresssiveComponent.cpp')

diff --git a/src/Mobs/Components/AIAggresssiveComponent.cpp b/src/Mobs/Components/AIAggresssiveComponent.cpp
new file mode 100644
index 000000000..cd7e34e2f
--- /dev/null
+++ b/src/Mobs/Components/AIAggresssiveComponent.cpp
@@ -0,0 +1,155 @@
+
+#include "Globals.h"  // NOTE: MSVC stupidness requires this to be the same across all modules
+#include "AIAggressiveComponent.h"
+#include "../Entities/Player.h"
+#include "../Tracer.h"
+#include <iostream>
+
+#include "Monster.h"
+
+
+cAIAggressiveComponent::cAIAggressiveComponent(cMonster * a_Monster) : cAIComponent(a_Monster), m_Target(NULL){}
+
+void cAIAggressiveComponent::Tick(float a_Dt, cChunk & a_Chunk)
+{
+	super::Tick(a_Dt, a_Chunk);
+
+	if (m_EMState == CHASING)
+	{
+		CheckEventLostPlayer();
+	}
+	else
+	{
+		CheckEventSeePlayer();
+	}
+
+	if (m_Target == NULL)
+		return;
+
+	cTracer LineOfSight(m_Self->GetWorld());
+	Vector3d AttackDirection(m_Target->GetPosition() - m_Self->GetPosition());
+
+	if (ReachedFinalDestination() && !LineOfSight.Trace(m_Self->GetPosition(), AttackDirection, (int)AttackDirection.Length()))
+	{
+		// Attack if reached destination, target isn't null, and have a clear line of sight to target (so won't attack through walls)
+		Attack(a_Dt / 1000);
+	}
+}
+
+
+void cAIAggressiveComponent::Attack(float a_Dt)
+{
+	float attack_interval = m_Self->GetAttackInterval();
+	attack_interval += a_Dt * m_Self->GetAttackRate();
+
+	if ((m_Target != NULL) && (attack_interval > 3.0))
+	{
+		// Setting this higher gives us more wiggle room for attackrate
+		attack_interval = 0.0f;
+		m_Target->TakeDamage(dtMobAttack, m_Self, m_Self->GetAttackDamage(), 0);
+	}
+
+	m_Self->SetAttackInterval(attack_interval);
+}
+
+
+bool cAIAggressiveComponent::IsMovingToTargetPosition()
+{
+	// Difference between destination x and target x is negligible (to 10^-12 precision)
+	if (fabsf((float)m_Self->m_FinalDestination.x - (float)m_Target->GetPosX()) < std::numeric_limits<float>::epsilon())
+	{
+		return false;
+	}
+	// Difference between destination z and target z is negligible (to 10^-12 precision)
+	else if (fabsf((float)m_Self->m_FinalDestination.z - (float)m_Target->GetPosZ()) > std::numeric_limits<float>::epsilon())
+	{
+		return false;
+	}
+	return true;
+}
+
+
+bool cAIAggressiveComponent::ReachedFinalDestination()
+{
+	if ((m_Self->GetPosition() - m_Self->m_FinalDestination).Length() <= m_Self->GetAttackRange())
+	{
+		return true;
+	}
+	
+	return false;
+}
+
+
+/// Event Checkers
+//Checks to see if EventSeePlayer should be fired
+//monster sez: Do I see the player
+void cAIAggressiveComponent::CheckEventSeePlayer(void)
+{
+	// TODO: Rewrite this to use cWorld's DoWithPlayers()
+	cPlayer * Closest = m_Self->GetWorld()->FindClosestPlayer(m_Self->GetPosition(), (float)m_Self->GetSightDistance(), false);
+
+	if (Closest != NULL)
+	{
+		std::cout << "Found Player\n";
+		EventSeePlayer(Closest);
+	}
+}
+
+
+void cAIAggressiveComponent::CheckEventLostPlayer(void)
+{	
+	if (m_Target != NULL)
+	{
+		if ((m_Target->GetPosition() - m_Self->GetPosition()).Length() > m_Self->GetSightDistance())
+		{
+			EventLosePlayer();
+		}
+	}
+	else
+	{
+		EventLosePlayer();
+	}
+}
+
+
+/// Event Handlers
+void cAIAggressiveComponent::EventSeePlayer(cEntity * a_Entity)
+{
+	if (!((cPlayer *)a_Entity)->IsGameModeCreative())
+	{
+		m_Target = a_Entity;
+		m_EMState = CHASING;
+	}
+}
+
+
+void cAIAggressiveComponent::EventLosePlayer(void)
+{
+	m_Target = NULL;
+	m_EMState = IDLE;
+}
+
+
+/// State Logic
+void cAIAggressiveComponent::InStateChasing(float a_Dt)
+{
+
+	if (m_Target != NULL)
+	{
+		if (m_Target->IsPlayer())
+		{
+			if (((cPlayer *)m_Target)->IsGameModeCreative())
+			{
+				m_EMState = IDLE;
+				return;
+			}
+		}
+
+		if (!IsMovingToTargetPosition())
+		{
+			m_Self->MoveToPosition(m_Target->GetPosition());
+		}
+	}
+} 
+
+
-- 
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