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

#include "../../Platform/stdafx.h"
#include "../../Headers/com.mojang.nbt.h"
#include "PistonPieceTileEntity.h"
#include "../PistonMovingTileEntity.h"
#include "../../Headers/net.minecraft.world.level.h"
#include "../../Util/Facing.h"
#include "../Tile.h"

PistonPieceEntity::PistonPieceEntity() {
    // for the tile entity loader

    // 4J - added initialisers
    this->id = 0;
    this->data = 0;
    this->facing = 0;
    this->extending = 0;
    this->_isSourcePiston = 0;
    progress = 0.0f;
    progressO = 0.0f;
}

PistonPieceEntity::PistonPieceEntity(int id, int data, int facing,
                                     bool extending, bool isSourcePiston)
    : TileEntity() {
    // 4J - added initialisers
    progress = 0.0f;
    progressO = 0.0f;

    this->id = id;
    this->data = data;
    this->facing = facing;
    this->extending = extending;
    this->_isSourcePiston = isSourcePiston;
}

int PistonPieceEntity::getId() { return id; }

int PistonPieceEntity::getData() { return data; }

bool PistonPieceEntity::isExtending() { return extending; }

int PistonPieceEntity::getFacing() { return facing; }

bool PistonPieceEntity::isSourcePiston() { return _isSourcePiston; }

float PistonPieceEntity::getProgress(float a) {
    if (a > 1) {
        a = 1;
    }
    return progressO + (progress - progressO) * a;
}

float PistonPieceEntity::getXOff(float a) {
    if (extending) {
        return (getProgress(a) - 1.0f) * Facing::STEP_X[facing];
    } else {
        return (1.0f - getProgress(a)) * Facing::STEP_X[facing];
    }
}

float PistonPieceEntity::getYOff(float a) {
    if (extending) {
        return (getProgress(a) - 1.0f) * Facing::STEP_Y[facing];
    } else {
        return (1.0f - getProgress(a)) * Facing::STEP_Y[facing];
    }
}

float PistonPieceEntity::getZOff(float a) {
    if (extending) {
        return (getProgress(a) - 1.0f) * Facing::STEP_Z[facing];
    } else {
        return (1.0f - getProgress(a)) * Facing::STEP_Z[facing];
    }
}

void PistonPieceEntity::moveCollidedEntities(float progress, float amount) {
    if (extending) {
        progress = 1.0f - progress;
    } else {
        progress = progress - 1.0f;
    }

    AABB* aabb =
        Tile::pistonMovingPiece->getAABB(level, x, y, z, id, progress, facing);
    if (aabb != NULL) {
        std::vector<std::shared_ptr<Entity> >* entities =
            level->getEntities(nullptr, aabb);
        if (!entities->empty()) {
            std::vector<std::shared_ptr<Entity> > collisionHolder;
            for (AUTO_VAR(it, entities->begin()); it != entities->end(); it++) {
                collisionHolder.push_back(*it);
            }

            for (AUTO_VAR(it, collisionHolder.begin());
                 it != collisionHolder.end(); it++) {
                (*it)->move(amount * Facing::STEP_X[facing],
                            amount * Facing::STEP_Y[facing],
                            amount * Facing::STEP_Z[facing]);
            }
        }
    }
}

void PistonPieceEntity::finalTick() {
    if (progressO < 1 && level != NULL) {
        progressO = progress = 1;
        level->removeTileEntity(x, y, z);
        setRemoved();
        if (level->getTile(x, y, z) == Tile::pistonMovingPiece_Id) {
            level->setTileAndData(x, y, z, id, data, Tile::UPDATE_ALL);
            level->neighborChanged(x, y, z, id);
        }
    }
}

void PistonPieceEntity::tick() {
    progressO = progress;

    if (progressO >= 1) {
        moveCollidedEntities(1, 4 / 16.f);
        level->removeTileEntity(x, y, z);
        setRemoved();
        if (level->getTile(x, y, z) == Tile::pistonMovingPiece_Id) {
            level->setTileAndData(x, y, z, id, data, Tile::UPDATE_ALL);
            level->neighborChanged(x, y, z, id);
        }
        return;
    }

    progress += .5f;
    if (progress >= 1) {
        progress = 1;
    }

    if (extending) {
        moveCollidedEntities(progress, (progress - progressO) + 1.0f / 16.0f);
    }
}

void PistonPieceEntity::load(CompoundTag* tag) {
    TileEntity::load(tag);

    id = tag->getInt(L"blockId");
    data = tag->getInt(L"blockData");
    facing = tag->getInt(L"facing");
    progressO = progress = tag->getFloat(L"progress");
    extending = tag->getBoolean(L"extending");
}

void PistonPieceEntity::save(CompoundTag* tag) {
    TileEntity::save(tag);

    tag->putInt(L"blockId", id);
    tag->putInt(L"blockData", data);
    tag->putInt(L"facing", facing);
    tag->putFloat(L"progress", progressO);
    tag->putBoolean(L"extending", extending);
}

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

    result->id = id;
    result->data = data;
    result->facing = facing;
    result->extending = extending;
    result->_isSourcePiston = _isSourcePiston;
    result->progress = progress;
    result->progressO = progressO;
    return result;
}