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#include "Globals.h" // NOTE: MSVC stupidness requires this to be the same across all modules
#include "BehaviorAttacker.h"
#include "../Monster.h"
#include "../../Entities/Pawn.h"
#include "../../Entities/Player.h"
#include "../../Tracer.h"
cBehaviorAttacker::cBehaviorAttacker() :
m_AttackRate(3)
, m_AttackDamage(1)
, m_AttackRange(1)
, m_AttackCoolDownTicksLeft(0)
, m_IsStriking(false)
, m_Target(nullptr)
, m_ShouldRetaliate(true)
{
}
void cBehaviorAttacker::AttachToMonster(cMonster & a_Parent)
{
m_Parent = &a_Parent;
m_Parent->AttachTickBehavior(this);
m_Parent->AttachDestroyBehavior(this);
m_Parent->AttachPostTickBehavior(this);
m_Parent->AttachDoTakeDamageBehavior(this);
m_Parent->m_BehaviorAttackerPointer = this;
}
bool cBehaviorAttacker::IsControlDesired(std::chrono::milliseconds a_Dt, cChunk & a_Chunk)
{
UNUSED(a_Dt);
UNUSED(a_Chunk);
// If we have a target, we have something to do! Return true and control the mob Ticks.
// Otherwise return false.
return (m_IsStriking || (GetTarget() != nullptr));
}
void cBehaviorAttacker::Tick(std::chrono::milliseconds a_Dt, cChunk & a_Chunk)
{
UNUSED(a_Dt);
UNUSED(a_Chunk);
ASSERT(m_Parent->GetHealth() > 0.0);
if (m_IsStriking)
{
if (DoStrike(++m_StrikeTickCnt))
{
m_Parent->UnpinBehavior(this);
m_IsStriking = false;
ResetStrikeCooldown();
}
#ifdef _DEBUG
if (m_StrikeTickCnt > 100)
{
LOGD("Sanity check failed. An attack took more than 5 seconds. Hmm");
ASSERT(1 == 0);
}
#endif
return;
}
if ((GetTarget() != nullptr))
{
ASSERT(GetTarget()->IsTicking());
if (GetTarget()->IsPlayer())
{
if (!static_cast<cPlayer *>(GetTarget())->CanMobsTarget())
{
SetTarget(nullptr);
}
}
}
ASSERT((GetTarget() == nullptr) || (GetTarget()->IsPawn() && (GetTarget()->GetWorld() == m_Parent->GetWorld())));
if (GetTarget() != nullptr)
{
m_Parent->SetLookingAt(m_Target);
if (TargetTooFar())
{
SetTarget(nullptr);
}
else
{
if (TargetIsInStrikeRadius() && TargetIsInLineOfSight())
{
StrikeIfReady();
}
else
{
m_Parent->MoveToPosition(m_Target->GetPosition());
// todo BehaviorApproacher for creeper sneaking, etc
}
}
}
}
void cBehaviorAttacker::PostTick(std::chrono::milliseconds a_Dt, cChunk & a_Chunk)
{
if (m_AttackCoolDownTicksLeft > 0)
{
m_AttackCoolDownTicksLeft -= 1;
}
}
void cBehaviorAttacker::DoTakeDamage(TakeDamageInfo & a_TDI)
{
if (!m_ShouldRetaliate)
{
return;
}
if ((a_TDI.Attacker != nullptr) && a_TDI.Attacker->IsPawn())
{
if (
(!a_TDI.Attacker->IsPlayer()) ||
(static_cast<cPlayer *>(a_TDI.Attacker)->CanMobsTarget())
)
{
SetTarget(static_cast<cPawn*>(a_TDI.Attacker));
}
}
}
void cBehaviorAttacker::Destroyed()
{
SetTarget(nullptr);
}
void cBehaviorAttacker::SetAttackRate(float a_AttackRate)
{
m_AttackRate = a_AttackRate;
}
void cBehaviorAttacker::SetAttackRange(int a_AttackRange)
{
m_AttackRange = a_AttackRange;
}
void cBehaviorAttacker::SetAttackDamage(int a_AttackDamage)
{
m_AttackDamage = a_AttackDamage;
}
cPawn * cBehaviorAttacker::GetTarget()
{
return m_Target;
}
void cBehaviorAttacker::SetTarget(cPawn * a_Target)
{
m_Target = a_Target;
}
void cBehaviorAttacker::Strike()
{
if (m_IsStriking)
{
return;
}
m_IsStriking = true;
m_StrikeTickCnt = 0;
m_Parent->PinBehavior(this);
m_Parent->StopMovingToPosition();
}
bool cBehaviorAttacker::TargetIsInStrikeRadius(void)
{
ASSERT(GetTarget() != nullptr);
ASSERT(m_Parent != nullptr);
return ((GetTarget()->GetPosition() - m_Parent->GetPosition()).SqrLength() < (m_AttackRange * m_AttackRange));
}
bool cBehaviorAttacker::TargetIsInLineOfSight()
{
ASSERT(GetTarget() != nullptr);
ASSERT(m_Parent != nullptr);
// mobtodo make this smarter
cTracer LineOfSight(m_Parent->GetWorld());
Vector3d MyHeadPosition = m_Parent->GetHeadPosition();
Vector3d TargetHeadPosition = GetTarget()->GetHeadPosition();
Vector3d AttackDirection1(TargetHeadPosition - MyHeadPosition);
if (LineOfSight.Trace(MyHeadPosition, AttackDirection1,
static_cast<int>(AttackDirection1.Length()))
)
{
return false;
}
Vector3d MyFeetPosition = m_Parent->GetPosition() + Vector3d(0, 0.5, 0);
Vector3d TargetFeetPosition = GetTarget()->GetPosition() + Vector3d(0, 0.5, 0);
Vector3d AttackDirection2(TargetFeetPosition - MyFeetPosition);
if (LineOfSight.Trace(MyFeetPosition, AttackDirection2,
static_cast<int>(AttackDirection2.Length()))
)
{
return false;
}
return true;
}
bool cBehaviorAttacker::TargetTooFar()
{
ASSERT(m_Target != nullptr);
if ((GetTarget()->GetPosition() - m_Parent->GetPosition()).Length() > m_Parent->GetSightDistance())
{
return true;
}
return false;
}
void cBehaviorAttacker::ResetStrikeCooldown()
{
m_AttackCoolDownTicksLeft = static_cast<int>(3 * 20 * m_AttackRate); // A second has 20 ticks, an attack rate of 1 means 1 hit every 3 seconds
}
void cBehaviorAttacker::StrikeIfReady()
{
if (m_AttackCoolDownTicksLeft == 0)
{
Strike();
}
}
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