4jcraft/Minecraft.World/Blocks/TileEntities/MobSpawnerTileEntity.cpp

#include "../../Platform/stdafx.h"
#include "../../Headers/com.mojang.nbt.h"
#include "TileEntity.h"
#include "../../Level/Events/LevelEvent.h"
#include "../../Headers/net.minecraft.world.level.h"
#include "../../Headers/net.minecraft.world.entity.item.h"
#include "../../Headers/net.minecraft.world.entity.player.h"
#include "../../Headers/net.minecraft.world.item.h"
#include "../../Headers/net.minecraft.world.entity.h"
#include "../../Headers/net.minecraft.world.phys.h"
#include "../../Headers/net.minecraft.network.packet.h"
#include "../../Util/SharedConstants.h"
#include "MobSpawnerTileEntity.h"

const int MobSpawnerTileEntity::MAX_DIST = 16;

MobSpawnerTileEntity::MobSpawnerTileEntity() : TileEntity() {
    spin = 0;
    oSpin = 0;

    // entityId = "Skeleton";
    entityId = L"Pig";
    m_bEntityIdUpdated = false;

    spawnData = NULL;

    spawnDelay = 20;

    minSpawnDelay = SharedConstants::TICKS_PER_SECOND * 10;
    maxSpawnDelay = SharedConstants::TICKS_PER_SECOND * 40;
    spawnCount = 4;
    displayEntity = nullptr;
}

std::wstring MobSpawnerTileEntity::getEntityId() { return entityId; }

void MobSpawnerTileEntity::setEntityId(const std::wstring& entityId) {
    this->entityId = entityId;
}

bool MobSpawnerTileEntity::isNearPlayer() {
    return level->getNearestPlayer(x + 0.5, y + 0.5, z + 0.5, MAX_DIST) != NULL;
}

void MobSpawnerTileEntity::tick() {
    if (!isNearPlayer()) {
        return;
    }

    if (level->isClientSide) {
        double xP = x + level->random->nextFloat();
        double yP = y + level->random->nextFloat();
        double zP = z + level->random->nextFloat();
        level->addParticle(eParticleType_smoke, xP, yP, zP, 0, 0, 0);
        level->addParticle(eParticleType_flame, xP, yP, zP, 0, 0, 0);

        oSpin = spin;
        spin += 1000 / 220.0f;
        while (spin > 360) {
            spin -= 360;
        }
        while (oSpin > 360) {
            oSpin -= 360;
        }
    } else {
        if (spawnDelay == -1) delay();

        if (spawnDelay > 0) {
            spawnDelay--;
            return;
        }

        for (int c = 0; c < spawnCount; c++) {
            std::shared_ptr<Mob> entity = std::dynamic_pointer_cast<Mob>(
                EntityIO::newEntity(entityId, level));
            if (entity == NULL) return;

            Mob* entityPtr = entity.get();
            std::vector<std::shared_ptr<Entity> >* vecNearby =
                level->getEntitiesOfClass(
                    typeid(*entityPtr),
                    AABB::newTemp(x, y, z, x + 1, y + 1, z + 1)->grow(8, 4, 8));
            int nearBy =
                (int)vecNearby
                    ->size();  // 4J - IB, TODO, Mob contains no getClass
            delete vecNearby;

            if (nearBy >= 6) {
                delay();
                return;
            }

            // 4J added - our mobspawner tiles should only be spawning monsters.
            // Also respect the global limits we have for those so we don't go
            // creating silly numbers of them. Have set this limit slightly
            // higher than the main spawner has so that this tile entity is more
            // likely to actually make something (60 rather than 50)
            if (level->countInstanceOf(eTYPE_MONSTER, false) >= 60) {
                return;
            }

            if (entity != NULL) {
                double xp = x + (level->random->nextDouble() -
                                 level->random->nextDouble()) *
                                    4;
                double yp = y + level->random->nextInt(3) - 1;
                double zp = z + (level->random->nextDouble() -
                                 level->random->nextDouble()) *
                                    4;
                std::shared_ptr<Mob> mob =
                    std::dynamic_pointer_cast<Mob>(entity);

                entity->moveTo(xp, yp, zp, level->random->nextFloat() * 360, 0);

                if (mob == NULL || mob->canSpawn()) {
                    fillExtraData(entity);

                    level->addEntity(entity);

                    level->levelEvent(LevelEvent::PARTICLES_MOBTILE_SPAWN, x, y,
                                      z, 0);

                    if (mob != NULL) mob->spawnAnim();
                    delay();
                }
            }
        }
    }

    TileEntity::tick();
}

void MobSpawnerTileEntity::fillExtraData(std::shared_ptr<Entity> entity) {
    if (spawnData != NULL) {
        CompoundTag* data = new CompoundTag();
        entity->save(data);

        std::vector<Tag*>* allTags = spawnData->getAllTags();
        for (AUTO_VAR(it, allTags->begin()); it != allTags->end(); ++it) {
            Tag* tag = *it;
            data->put((wchar_t*)tag->getName().c_str(), tag->copy());
        }
        if (allTags != NULL) delete allTags;

        entity->load(data);
    }
}

void MobSpawnerTileEntity::delay() {
    spawnDelay =
        minSpawnDelay + level->random->nextInt(maxSpawnDelay - minSpawnDelay);
}

void MobSpawnerTileEntity::load(CompoundTag* tag) {
    TileEntity::load(tag);
    entityId = tag->getString(L"EntityId");
    m_bEntityIdUpdated = true;

    spawnDelay = tag->getShort(L"Delay");

    if (tag->contains(L"SpawnData")) {
        spawnData = tag->getCompound(L"SpawnData");
    } else {
        spawnData = NULL;
    }

    if (tag->contains(L"MinSpawnDelay")) {
        minSpawnDelay = tag->getShort(L"MinSpawnDelay");
        maxSpawnDelay = tag->getShort(L"MaxSpawnDelay");
        spawnCount = tag->getShort(L"SpawnCount");
    }
}

void MobSpawnerTileEntity::save(CompoundTag* tag) {
    TileEntity::save(tag);
    tag->putString(L"EntityId", entityId);
    tag->putShort(L"Delay", (short)spawnDelay);
    tag->putShort(L"MinSpawnDelay", (short)minSpawnDelay);
    tag->putShort(L"MaxSpawnDelay", (short)maxSpawnDelay);
    tag->putShort(L"SpawnCount", (short)spawnCount);

    if (spawnData != NULL) {
        tag->putCompound(L"SpawnData", spawnData);
    }
}

std::shared_ptr<Entity> MobSpawnerTileEntity::getDisplayEntity() {
    if (displayEntity == NULL || m_bEntityIdUpdated) {
        std::shared_ptr<Entity> e = EntityIO::newEntity(getEntityId(), NULL);
        fillExtraData(e);
        displayEntity = e;
        m_bEntityIdUpdated = false;
    }

    return displayEntity;
}

std::shared_ptr<Packet> MobSpawnerTileEntity::getUpdatePacket() {
    CompoundTag* tag = new CompoundTag();
    save(tag);
    return std::shared_ptr<TileEntityDataPacket>(new TileEntityDataPacket(
        x, y, z, TileEntityDataPacket::TYPE_MOB_SPAWNER, tag));
}

// 4J Added
std::shared_ptr<TileEntity> MobSpawnerTileEntity::clone() {
    std::shared_ptr<MobSpawnerTileEntity> result =
        std::shared_ptr<MobSpawnerTileEntity>(new MobSpawnerTileEntity());
    TileEntity::clone(result);

    result->entityId = entityId;
    result->spawnDelay = spawnDelay;
    return result;
}