4jcraft/Minecraft.World/WorldGen/Features/NetherBridgeFeature.cpp

#include "../../Platform/stdafx.h"
#include "../Biomes/Biome.h"
#include "NetherBridgeFeature.h"
#include "../Structures/NetherBridgePieces.h"
#include "../../Blocks/MobSpawner.h"
#include "../../Headers/net.minecraft.world.entity.monster.h"
#include "../../Headers/net.minecraft.world.level.h"
#include "../../Headers/net.minecraft.world.level.dimension.h"

NetherBridgeFeature::NetherBridgeFeature() : StructureFeature() {
    bridgeEnemies.push_back(new Biome::MobSpawnerData(eTYPE_BLAZE, 10, 2, 3));
    bridgeEnemies.push_back(
        new Biome::MobSpawnerData(eTYPE_PIGZOMBIE, 5, 4, 4));
    bridgeEnemies.push_back(
        new Biome::MobSpawnerData(eTYPE_SKELETON, 10, 4, 4));
    bridgeEnemies.push_back(
        new Biome::MobSpawnerData(eTYPE_LAVASLIME, 3, 4, 4));
    isSpotSelected = false;
    netherFortressPos = nullptr;
}

NetherBridgeFeature::~NetherBridgeFeature() {
    if (netherFortressPos != nullptr) delete netherFortressPos;
}

std::wstring NetherBridgeFeature::getFeatureName() { return L"Fortress"; }

std::vector<Biome::MobSpawnerData*>* NetherBridgeFeature::getBridgeEnemies() {
    return &bridgeEnemies;
}

bool NetherBridgeFeature::isFeatureChunk(int x, int z, bool bIsSuperflat) {
    // 4J Stu - New implementation to force a nether fortress
    if (!isSpotSelected) {
        // Set the random
        random->setSeed(level->getSeed());
        random->nextInt();

        // Due to our nether size we want to accept chunks in the range
        // [(-3,-3),(3,3)] (7x7). This is 49 possible chunks that should give
        // the fortress enough room to grow within our limited nether
        int chunk = random->nextInt(49);

        int xCoord = chunk % 7;
        int zCoord = chunk / 7;

        netherFortressPos = new ChunkPos(xCoord, zCoord);

        isSpotSelected = true;
    }

    bool forcePlacement = false;
    LevelGenerationOptions* levelGenOptions = app.getLevelGenerationOptions();
    if (levelGenOptions != nullptr) {
        forcePlacement =
            levelGenOptions->isFeatureChunk(x, z, eFeature_NetherBridge);
    }

    if (forcePlacement ||
        (x == netherFortressPos->x && z == netherFortressPos->z))
        return true;

#ifdef _LARGE_WORLDS
    int xzSize = level->dimension->getXZSize();
    if (xzSize > 30) {
        // For large worlds, lets allow the PC version of the spawning to place
        // nether fortresses (plus the one we forced above)
        int cx = x >> 4;
        int cz = z >> 4;

        random->setSeed(cx ^ (cz << 4) ^ level->getSeed());
        random->nextInt();

        if (random->nextInt(3) != 0) {
            return false;
        }
        if (x != ((cx << 4) + 4 + random->nextInt(8))) {
            return false;
        }
        if (z != ((cz << 4) + 4 + random->nextInt(8))) {
            return false;
        }
        return true;
    }
#endif

    return false;
}

StructureStart* NetherBridgeFeature::createStructureStart(int x, int z) {
    return new NetherBridgeStart(level, random, x, z);
}

void NetherBridgeFeature::clearCachedBuildings() { cachedStructures.clear(); }

NetherBridgeFeature::NetherBridgeStart::NetherBridgeStart() {
    // for reflection
}

NetherBridgeFeature::NetherBridgeStart::NetherBridgeStart(Level* level,
                                                          Random* random,
                                                          int chunkX,
                                                          int chunkZ)
    : StructureStart(chunkX, chunkZ) {
    NetherBridgePieces::StartPiece* start = new NetherBridgePieces::StartPiece(
        random, (chunkX << 4) + 2, (chunkZ << 4) + 2, level);
    pieces.push_back(start);
    start->addChildren(start, &pieces, random);

    std::vector<StructurePiece*>* pendingChildren = &start->pendingChildren;
    while (!pendingChildren->empty()) {
        int pos = random->nextInt((int)pendingChildren->size());
        auto it = pendingChildren->begin() + pos;
        StructurePiece* structurePiece = *it;
        pendingChildren->erase(it);
        structurePiece->addChildren(start, &pieces, random);
    }

    calculateBoundingBox();
    moveInsideHeights(level, random, 48, 70);
}