Ghast.cpp

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#include "Globals.h"  // NOTE: MSVC stupidness requires this to be the same across all modules
 
#include "Ghast.h"
#include "../World.h"
#include "../Entities/GhastFireballEntity.h"
 
 
 
 
cGhast::cGhast(void) :
    Super("Ghast", mtGhast, "entity.ghast.hurt", "entity.ghast.death", "entity.ghast.ambient", 4, 4),
    m_IsCharging(false),
    m_FlightCooldown(5),
    m_TicksUntilShot(10)
{
    SetGravity(0);
    SetAirDrag(0);
}
 
 
 
 
 
bool cGhast::Attack(std::chrono::milliseconds a_Dt)
{
    if ((GetTarget() != nullptr) && (m_AttackCoolDownTicksLeft == 0) && (!m_IsCharging))
    {
        auto & Random = GetRandomProvider();
        auto SoundPitchMultiplier = 1.0f + (Random.RandReal(1.0f) - Random.RandReal(1.0f)) * 0.2f;
 
        m_World->BroadcastSoundEffect("entity.ghast.warn", GetPosition(), 4.0f, SoundPitchMultiplier * 0.9f);
        m_IsCharging = true;
        m_World->BroadcastEntityMetadata(*this);
        return true;
    }
    return false;
}
 
 
 
 
 
bool cGhast::DoTakeDamage(TakeDamageInfo & a_TDI)
{
    // No fall damage
    if (a_TDI.DamageType == dtFalling)
    {
        return false;
    }
 
    return Super::DoTakeDamage(a_TDI);
}
 
 
 
 
 
void cGhast::GetDrops(cItems & a_Drops, cEntity * a_Killer)
{
    unsigned int LootingLevel = 0;
    if (a_Killer != nullptr)
    {
        LootingLevel = a_Killer->GetEquippedWeapon().m_Enchantments.GetLevel(cEnchantments::enchLooting);
    }
    AddRandomDropItem(a_Drops, 0, 2 + LootingLevel, E_ITEM_GUNPOWDER);
    AddRandomDropItem(a_Drops, 0, 1 + LootingLevel, E_ITEM_GHAST_TEAR);
}
 
 
 
 
 
void cGhast::Tick(std::chrono::milliseconds a_Dt, cChunk & a_Chunk)
{
    Super::Tick(a_Dt, a_Chunk);
    if (!IsTicking())
    {
        // The base class tick destroyed us
        return;
    }
 
    if ((m_IsCharging) && (m_TicksUntilShot-- == 0))
    {
        m_TicksUntilShot = 10;
        m_IsCharging = false;
        m_World->BroadcastEntityMetadata(*this);
 
        Vector3d Speed = GetLookVector() * 20;
        Speed.y = Speed.y + 1;
 
        auto GhastBall = std::make_unique<cGhastFireballEntity>(this, GetPosition(), Speed);
        auto GhastBallPtr = GhastBall.get();
        GhastBallPtr->Initialize(std::move(GhastBall), *m_World);
 
        m_World->BroadcastSoundEffect("entity.ghast.shoot", GetPosition(), 4.0f, 1.0f);
 
        ResetAttackCooldown();
    }
 
    // TODO: Better flying
    if (m_FlightCooldown-- == 0)
    {
        m_FlightCooldown = 5;
        auto & Random = GetRandomProvider();
        auto SpeedVector = Vector3d(Random.RandReal(-0.3, 0.3), Random.RandReal(-0.4, 0.4), Random.RandReal(-0.3, 0.3));
 
        if (GetPosY() > 120)
        {
            SpeedVector = Vector3d(Random.RandReal(-0.4, 0.4), Random.RandReal(-0.45, 0.4), Random.RandReal(-0.4, 0.4));
        }
 
        AddSpeed(SpeedVector);
    }
}