MinecraftConsoles/Minecraft.World/Ghast.cpp

#include "stdafx.h"
#include "net.minecraft.world.h"
#include "net.minecraft.world.phys.h"
#include "net.minecraft.world.level.h"
#include "net.minecraft.world.entity.h"
#include "net.minecraft.world.entity.ai.attributes.h"
#include "net.minecraft.world.entity.projectile.h"
#include "net.minecraft.world.entity.player.h"
#include "net.minecraft.world.entity.monster.h"
#include "net.minecraft.world.item.h"
#include "net.minecraft.world.damagesource.h"
#include "net.minecraft.stats.h"
#include "Ghast.h"
#include "..\Minecraft.Client\Textures.h"
#include "LevelEvent.h"
#include "SoundTypes.h"



void Ghast::_init()
{
	explosionPower = 1;
	floatDuration = 0;
	target = nullptr;
	retargetTime = 0;
	oCharge = 0;
	charge = 0;

	xTarget = 0.0f;
	yTarget = 0.0f;
	zTarget = 0.0f;
}

Ghast::Ghast(Level *level) : FlyingMob( level )
{
	// 4J Stu - This function call had to be moved here from the Entity ctor to ensure that
	// the derived version of the function is called
	this->defineSynchedData();
	registerAttributes();
	setHealth(getMaxHealth());

	_init();

	setSize(4, 4);
	fireImmune = true;
	xpReward = Enemy::XP_REWARD_MEDIUM;
}

bool Ghast::isCharging()
{
	return entityData->getByte(DATA_IS_CHARGING) != 0;
}

bool Ghast::hurt(DamageSource *source, float dmg)
{
	if (isInvulnerable()) return false;
	if (source->getMsgId() == ChatPacket::e_ChatDeathFireball)
	{
		if ( (source->getEntity() != NULL) && source->getEntity()->instanceof(eTYPE_PLAYER) )
		{
			// reflected fireball, kill the ghast
			FlyingMob::hurt(source, 1000);
			dynamic_pointer_cast<Player>(source->getEntity())->awardStat(GenericStats::ghast(), GenericStats::param_ghast());
			return true;
		}
	}

	return FlyingMob::hurt(source, dmg);
}

void Ghast::defineSynchedData() 
{
	FlyingMob::defineSynchedData();

	entityData->define(DATA_IS_CHARGING, (byte) 0);
}

void Ghast::registerAttributes()
{
	FlyingMob::registerAttributes();

	getAttribute(SharedMonsterAttributes::MAX_HEALTH)->setBaseValue(10);
}

void Ghast::serverAiStep() 
{
	if (!level->isClientSide && level->difficulty == Difficulty::PEACEFUL) remove();
	checkDespawn();

	oCharge = charge;
	double xd = xTarget - x;
	double yd = yTarget - y;
	double zd = zTarget - z;

	double dd = xd * xd + yd * yd + zd * zd;

	if (dd < 1 * 1 || dd > 60 * 60)
	{
		xTarget = x + (random->nextFloat() * 2 - 1) * 16;
		yTarget = y + (random->nextFloat() * 2 - 1) * 16;
		zTarget = z + (random->nextFloat() * 2 - 1) * 16;
	}

	if (floatDuration-- <= 0)
	{
		floatDuration += random->nextInt(5) + 2;

		dd = sqrt(dd);

		if (canReach(xTarget, yTarget, zTarget, dd)) 
		{
			this->xd += xd / dd * 0.1;
			this->yd += yd / dd * 0.1;
			this->zd += zd / dd * 0.1;
		}
		else
		{
			xTarget = x;
			yTarget = y;
			zTarget = z;
		}
	}

	if (target != NULL && target->removed) target = nullptr;
	if (target == NULL || retargetTime-- <= 0)
	{
		target = level->getNearestAttackablePlayer(shared_from_this(), 100);
		if (target != NULL) 
		{
			retargetTime = 20;
		}
	}

	double maxDist = 64.0f;
	if (target != NULL && target->distanceToSqr(shared_from_this()) < maxDist * maxDist) 
	{
		double xdd = target->x - x;
		double ydd = (target->bb->y0 + target->bbHeight / 2) - (y + bbHeight / 2);
		double zdd = target->z - z;
		yBodyRot = yRot = -(float) atan2(xdd, zdd) * 180 / PI;

		if (canSee(target))
		{
			if (charge == 10)
			{
				// 4J - change brought forward from 1.2.3
				level->levelEvent(nullptr, LevelEvent::SOUND_GHAST_WARNING, (int) x, (int) y, (int) z, 0);
			}
			charge++;
			if (charge == 20)
			{
				// 4J - change brought forward from 1.2.3
				level->levelEvent(nullptr, LevelEvent::SOUND_GHAST_FIREBALL, (int) x, (int) y, (int) z, 0);
				shared_ptr<LargeFireball> ie = shared_ptr<LargeFireball>( new LargeFireball(level, dynamic_pointer_cast<Mob>( shared_from_this() ), xdd, ydd, zdd) );
				ie->explosionPower = explosionPower;
				double d = 4;
				Vec3 *v = getViewVector(1);
				ie->x = x + v->x * d;
				ie->y = y + bbHeight / 2 + 0.5f;
				ie->z = z + v->z * d;
				level->addEntity(ie);
				charge = -40;
			}
		} 
		else 
		{
			if (charge > 0) charge--;
		}
	}
	else
	{
		yBodyRot = yRot = -(float) atan2(this->xd, this->zd) * 180 / PI;
		if (charge > 0) charge--;
	}

	if (!level->isClientSide) 
	{
		byte old = entityData->getByte(DATA_IS_CHARGING);
		byte current = (byte) (charge > 10 ? 1 : 0);
		if (old != current)
		{
			entityData->set(DATA_IS_CHARGING, current);
		}
	}
}

bool Ghast::canReach(double xt, double yt, double zt, double dist) 
{
	double xd = (xTarget - x) / dist;
	double yd = (yTarget - y) / dist;
	double zd = (zTarget - z) / dist;

	AABB *bb = this->bb->copy();
	for (int d = 1; d < dist; d++)
	{
		bb->move(xd, yd, zd);
		if (!level->getCubes( shared_from_this(), bb)->empty()) return false;
	}

	return true;
}

int Ghast::getAmbientSound()
{
	return eSoundType_MOB_GHAST_MOAN;
}

int Ghast::getHurtSound()
{
	return eSoundType_MOB_GHAST_SCREAM;
}

int Ghast::getDeathSound()
{
	return eSoundType_MOB_GHAST_DEATH;
}

int Ghast::getDeathLoot() 
{
	return Item::gunpowder_Id;
}

void Ghast::dropDeathLoot(bool wasKilledByPlayer, int playerBonusLevel)
{
	int count = random->nextInt(2) + random->nextInt(1 + playerBonusLevel);
	for (int i = 0; i < count; i++)
	{
		spawnAtLocation(Item::ghastTear_Id, 1);
	}
	count = random->nextInt(3) + random->nextInt(1 + playerBonusLevel);
	for (int i = 0; i < count; i++)
	{
		spawnAtLocation(Item::gunpowder_Id, 1);
	}
}

float Ghast::getSoundVolume()
{
	return 0.4f;//10; 4J-PB - changing due to customer demands
}

bool Ghast::canSpawn()
{
	return (random->nextInt(20) == 0 && FlyingMob::canSpawn() && level->difficulty > Difficulty::PEACEFUL);
}

int Ghast::getMaxSpawnClusterSize()
{
	return 1;
}
void Ghast::addAdditonalSaveData(CompoundTag *tag)
{
	FlyingMob::addAdditonalSaveData(tag);
	tag->putInt(L"ExplosionPower", explosionPower);
}

void Ghast::readAdditionalSaveData(CompoundTag *tag)
{
	FlyingMob::readAdditionalSaveData(tag);
	if (tag->contains(L"ExplosionPower")) explosionPower = tag->getInt(L"ExplosionPower");
}