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//define which version of DF this is being built for.
#define DF_VER_040
//#define DF_VER_034
// some headers required for a plugin. Nothing special, just the basics.
#include "Core.h"
#include <Console.h>
#include <Export.h>
#include <PluginManager.h>
// DF data structure definition headers
#include "DataDefs.h"
#include "df/world.h"
#include "df/ui.h"
#include "df/item.h"
#include "df/creature_raw.h"
#include "df/caste_raw.h"
#include "df/body_part_raw.h"
#include "df/historical_figure.h"
#include "df/job_item.h"
#include "df/job_material_category.h"
#include "df/dfhack_material_category.h"
#include "df/matter_state.h"
#include "df/material_vec_ref.h"
#include "df/builtin_mats.h"
#include "df/map_block_column.h"
#include "df/plant.h"
#include "df/plant_tree_info.h"
#include "df/plant_growth.h"
#include "df/descriptor_color.h"
#include "df/descriptor_pattern.h"
#include "df/descriptor_shape.h"
#include "df/physical_attribute_type.h"
#include "df/mental_attribute_type.h"
#include <df/color_modifier_raw.h>
#include "df/unit.h"
//DFhack specific headers
#include "modules/Maps.h"
#include "modules/MapCache.h"
#include "modules/Materials.h"
#include "modules/Gui.h"
#include "modules/Translation.h"
#include "TileTypes.h"
#include "MiscUtils.h"
#include <vector>
#include <time.h>
#include "RemoteFortressReader.pb.h"
#include "RemoteServer.h"
using namespace DFHack;
using namespace df::enums;
using namespace RemoteFortressReader;
using namespace std;
DFHACK_PLUGIN("RemoteFortressReader");
REQUIRE_GLOBAL(world);
// Here go all the command declarations...
// mostly to allow having the mandatory stuff on top of the file and commands on the bottom
static command_result GetGrowthList(color_ostream &stream, const EmptyMessage *in, MaterialList *out);
static command_result GetMaterialList(color_ostream &stream, const EmptyMessage *in, MaterialList *out);
static command_result GetTiletypeList(color_ostream &stream, const EmptyMessage *in, TiletypeList *out);
static command_result GetBlockList(color_ostream &stream, const BlockRequest *in, BlockList *out);
static command_result GetPlantList(color_ostream &stream, const BlockRequest *in, PlantList *out);
static command_result CheckHashes(color_ostream &stream, const EmptyMessage *in);
static command_result GetUnitList(color_ostream &stream, const EmptyMessage *in, UnitList *out);
static command_result GetViewInfo(color_ostream &stream, const EmptyMessage *in, ViewInfo *out);
static command_result GetMapInfo(color_ostream &stream, const EmptyMessage *in, MapInfo *out);
static command_result ResetMapHashes(color_ostream &stream, const EmptyMessage *in);
void CopyBlock(df::map_block * DfBlock, RemoteFortressReader::MapBlock * NetBlock, MapExtras::MapCache * MC, DFCoord pos);
void FindChangedBlocks();
const char* growth_locations[] = {
    "TWIGS",
    "LIGHT_BRANCHES",
    "HEAVY_BRANCHES",
    "TRUNK",
    "ROOTS",
    "SAPLING",
    "SHRUB"
#define GROWTH_LOCATIONS_SIZE 8
// Mandatory init function. If you have some global state, create it here.
DFhackCExport command_result plugin_init(color_ostream &out, std::vector <PluginCommand> &commands)
    //// Fill the command list with your commands.
    //commands.push_back(PluginCommand(
    //    "isoworldremote", "Dump north-west embark tile to text file for debug purposes.",
    //    isoWorldRemote, false, /* true means that the command can't be used from non-interactive user interface */
    //    // Extended help string. Used by CR_WRONG_USAGE and the help command:
    //    "  This command does nothing at all.\n"
    //    "Example:\n"
    //    "  isoworldremote\n"
    //    "    Does nothing.\n"
    return CR_OK;
DFhackCExport RPCService *plugin_rpcconnect(color_ostream &)
    RPCService *svc = new RPCService();
    svc->addFunction("GetMaterialList", GetMaterialList);
    svc->addFunction("GetGrowthList", GetGrowthList);
    svc->addFunction("GetBlockList", GetBlockList);
    svc->addFunction("CheckHashes", CheckHashes);
    svc->addFunction("GetTiletypeList", GetTiletypeList);
    svc->addFunction("GetPlantList", GetPlantList);
    svc->addFunction("GetUnitList", GetUnitList);
    svc->addFunction("GetViewInfo", GetViewInfo);
    svc->addFunction("GetMapInfo", GetMapInfo);
    svc->addFunction("ResetMapHashes", ResetMapHashes);
    return svc;
// This is called right before the plugin library is removed from memory.
DFhackCExport command_result plugin_shutdown(color_ostream &out)
    // You *MUST* kill all threads you created before this returns.
    // If everything fails, just return CR_FAILURE. Your plugin will be
    // in a zombie state, but things won't crash.
    return CR_OK;
uint16_t fletcher16(uint8_t const *data, size_t bytes)
    uint16_t sum1 = 0xff, sum2 = 0xff;
    while (bytes) {
        size_t tlen = bytes > 20 ? 20 : bytes;
        bytes -= tlen;
        do {
            sum2 += sum1 += *data++;
        } while (--tlen);
        sum1 = (sum1 & 0xff) + (sum1 >> 8);
        sum2 = (sum2 & 0xff) + (sum2 >> 8);
    /* Second reduction step to reduce sums to 8 bits */
    sum1 = (sum1 & 0xff) + (sum1 >> 8);
    sum2 = (sum2 & 0xff) + (sum2 >> 8);
    return sum2 << 8 | sum1;
RemoteFortressReader::TiletypeMaterial TranslateMaterial(df::tiletype_material material)
    switch (material)
    case df::enums::tiletype_material::NONE:
        return RemoteFortressReader::NO_MATERIAL;
        break;
    case df::enums::tiletype_material::AIR:
        return RemoteFortressReader::AIR;
        break;
    case df::enums::tiletype_material::SOIL:
        return RemoteFortressReader::SOIL;
        break;
    case df::enums::tiletype_material::STONE:
        return RemoteFortressReader::STONE;
        break;
    case df::enums::tiletype_material::FEATURE:
        return RemoteFortressReader::FEATURE;
        break;
    case df::enums::tiletype_material::LAVA_STONE:
        return RemoteFortressReader::LAVA_STONE;
        break;
    case df::enums::tiletype_material::MINERAL:
        return RemoteFortressReader::MINERAL;
        break;
    case df::enums::tiletype_material::FROZEN_LIQUID:
        return RemoteFortressReader::FROZEN_LIQUID;
        break;
    case df::enums::tiletype_material::CONSTRUCTION:
        return RemoteFortressReader::CONSTRUCTION;
        break;
    case df::enums::tiletype_material::GRASS_LIGHT:
        return RemoteFortressReader::GRASS_LIGHT;
        break;
    case df::enums::tiletype_material::GRASS_DARK:
        return RemoteFortressReader::GRASS_DARK;
        break;
    case df::enums::tiletype_material::GRASS_DRY:
        return RemoteFortressReader::GRASS_DRY;
        break;
    case df::enums::tiletype_material::GRASS_DEAD:
        return RemoteFortressReader::GRASS_DEAD;
        break;
    case df::enums::tiletype_material::PLANT:
        return RemoteFortressReader::PLANT;
        break;
    case df::enums::tiletype_material::HFS:
        return RemoteFortressReader::HFS;
        break;
    case df::enums::tiletype_material::CAMPFIRE:
        return RemoteFortressReader::CAMPFIRE;
        break;
    case df::enums::tiletype_material::FIRE:
        return RemoteFortressReader::FIRE;
        break;
    case df::enums::tiletype_material::ASHES:
        return RemoteFortressReader::ASHES;
        break;
    case df::enums::tiletype_material::MAGMA:
        return RemoteFortressReader::MAGMA;
        break;
    case df::enums::tiletype_material::DRIFTWOOD:
        return RemoteFortressReader::DRIFTWOOD;
        break;
    case df::enums::tiletype_material::POOL:
        return RemoteFortressReader::POOL;
        break;
    case df::enums::tiletype_material::BROOK:
        return RemoteFortressReader::BROOK;
        break;
    case df::enums::tiletype_material::RIVER:
        return RemoteFortressReader::RIVER;
        break;
    case df::enums::tiletype_material::ROOT:
        return RemoteFortressReader::ROOT;
        break;
    case df::enums::tiletype_material::TREE:
        return RemoteFortressReader::TREE_MATERIAL;
        break;
    case df::enums::tiletype_material::MUSHROOM:
        return RemoteFortressReader::MUSHROOM;
        break;
    case df::enums::tiletype_material::UNDERWORLD_GATE:
        return RemoteFortressReader::UNDERWORLD_GATE;
        break;
    default:
        return RemoteFortressReader::NO_MATERIAL;
        break;
    return RemoteFortressReader::NO_MATERIAL;
RemoteFortressReader::TiletypeSpecial TranslateSpecial(df::tiletype_special special)
    switch (special)
    case df::enums::tiletype_special::NONE:
        return RemoteFortressReader::NO_SPECIAL;
        break;
    case df::enums::tiletype_special::NORMAL:
        return RemoteFortressReader::NORMAL;
        break;
    case df::enums::tiletype_special::RIVER_SOURCE:
        return RemoteFortressReader::RIVER_SOURCE;
        break;
    case df::enums::tiletype_special::WATERFALL:
        return RemoteFortressReader::WATERFALL;
        break;
    case df::enums::tiletype_special::SMOOTH:
        return RemoteFortressReader::SMOOTH;
        break;
    case df::enums::tiletype_special::FURROWED:
        return RemoteFortressReader::FURROWED;
        break;
    case df::enums::tiletype_special::WET:
        return RemoteFortressReader::WET;
        break;
    case df::enums::tiletype_special::DEAD:
        return RemoteFortressReader::DEAD;
        break;
    case df::enums::tiletype_special::WORN_1:
        return RemoteFortressReader::WORN_1;
        break;
    case df::enums::tiletype_special::WORN_2:
        return RemoteFortressReader::WORN_2;
        break;
    case df::enums::tiletype_special::WORN_3:
        return RemoteFortressReader::WORN_3;
        break;
    case df::enums::tiletype_special::TRACK:
        return RemoteFortressReader::TRACK;
        break;
    case df::enums::tiletype_special::SMOOTH_DEAD:
        return RemoteFortressReader::SMOOTH_DEAD;
        break;
    default:
        return RemoteFortressReader::NO_SPECIAL;
        break;
    return RemoteFortressReader::NO_SPECIAL;
RemoteFortressReader::TiletypeShape TranslateShape(df::tiletype_shape shape)
    switch (shape)
    case df::enums::tiletype_shape::NONE:
        return RemoteFortressReader::NO_SHAPE;
        break;
    case df::enums::tiletype_shape::EMPTY:
        return RemoteFortressReader::EMPTY;
        break;
    case df::enums::tiletype_shape::FLOOR:
        return RemoteFortressReader::FLOOR;
        break;
    case df::enums::tiletype_shape::BOULDER:
        return RemoteFortressReader::BOULDER;
        break;
    case df::enums::tiletype_shape::PEBBLES:
        return RemoteFortressReader::PEBBLES;
        break;
    case df::enums::tiletype_shape::WALL:
        return RemoteFortressReader::WALL;
        break;
    case df::enums::tiletype_shape::FORTIFICATION:
        return RemoteFortressReader::FORTIFICATION;
        break;
    case df::enums::tiletype_shape::STAIR_UP:
        return RemoteFortressReader::STAIR_UP;
        break;
    case df::enums::tiletype_shape::STAIR_DOWN:
        return RemoteFortressReader::STAIR_DOWN;
        break;
    case df::enums::tiletype_shape::STAIR_UPDOWN:
        return RemoteFortressReader::STAIR_UPDOWN;
        break;
    case df::enums::tiletype_shape::RAMP:
        return RemoteFortressReader::RAMP;
        break;
    case df::enums::tiletype_shape::RAMP_TOP:
        return RemoteFortressReader::RAMP_TOP;
        break;
    case df::enums::tiletype_shape::BROOK_BED:
        return RemoteFortressReader::BROOK_BED;
        break;
    case df::enums::tiletype_shape::BROOK_TOP:
        return RemoteFortressReader::BROOK_TOP;
        break;
    case df::enums::tiletype_shape::BRANCH:
        return RemoteFortressReader::BRANCH;
        break;
#ifdef DF_VER_034
    case df::enums::tiletype_shape::TREE:
        return RemoteFortressReader::TREE;
        break;
    case df::enums::tiletype_shape::TRUNK_BRANCH:
        return RemoteFortressReader::TRUNK_BRANCH;
        break;
    case df::enums::tiletype_shape::TWIG:
        return RemoteFortressReader::TWIG;
        break;
    case df::enums::tiletype_shape::SAPLING:
        return RemoteFortressReader::SAPLING;
        break;
    case df::enums::tiletype_shape::SHRUB:
        return RemoteFortressReader::SHRUB;
        break;
    case df::enums::tiletype_shape::ENDLESS_PIT:
        return RemoteFortressReader::EMPTY;
        break;
    default:
        return RemoteFortressReader::NO_SHAPE;
        break;
    return RemoteFortressReader::NO_SHAPE;
RemoteFortressReader::TiletypeVariant TranslateVariant(df::tiletype_variant variant)
    switch (variant)
    case df::enums::tiletype_variant::NONE:
        return RemoteFortressReader::NO_VARIANT;
        break;
    case df::enums::tiletype_variant::VAR_1:
        return RemoteFortressReader::VAR_1;
        break;
    case df::enums::tiletype_variant::VAR_2:
        return RemoteFortressReader::VAR_2;
        break;
    case df::enums::tiletype_variant::VAR_3:
        return RemoteFortressReader::VAR_3;
        break;
    case df::enums::tiletype_variant::VAR_4:
        return RemoteFortressReader::VAR_4;
        break;
    default:
        return RemoteFortressReader::NO_VARIANT;
        break;
    return RemoteFortressReader::NO_VARIANT;
static command_result CheckHashes(color_ostream &stream, const EmptyMessage *in)
    clock_t start = clock();
    for (int i = 0; i < world->map.map_blocks.size(); i++)
        df::map_block * block = world->map.map_blocks[i];
        fletcher16((uint8_t*)(block->tiletype), 16 * 16 * sizeof(df::enums::tiletype::tiletype));
    clock_t end = clock();
    double elapsed_secs = double(end - start) / CLOCKS_PER_SEC;
    stream.print("Checking all hashes took %f seconds.", elapsed_secs);
    return CR_OK;
map<DFCoord, uint16_t> hashes;
//check if the tiletypes have changed
bool IsTiletypeChanged(DFCoord pos)
    uint16_t hash;
    df::map_block * block = Maps::getBlock(pos);
    if (block)
        hash = fletcher16((uint8_t*)(block->tiletype), 16 * 16 * (sizeof(df::enums::tiletype::tiletype)));
        hash = 0;
    if (hashes[pos] != hash)
        hashes[pos] = hash;
        return true;
    return false;
map<DFCoord, uint16_t> waterHashes;
//check if the tiletypes have changed
bool IsDesignationChanged(DFCoord pos)
    uint16_t hash;
    df::map_block * block = Maps::getBlock(pos);
    if (block)
        hash = fletcher16((uint8_t*)(block->designation), 16 * 16 * (sizeof(df::tile_designation)));
        hash = 0;
    if (waterHashes[pos] != hash)
        waterHashes[pos] = hash;
        return true;
    return false;
static command_result ResetMapHashes(color_ostream &stream, const EmptyMessage *in)
    hashes.clear();
    waterHashes.clear();
    return CR_OK;
df::matter_state GetState(df::material * mat, uint16_t temp = 10015)
    df::matter_state state = matter_state::Solid;
    if (temp >= mat->heat.melting_point)
        state = df::matter_state::Liquid;
    if (temp >= mat->heat.boiling_point)
        state = matter_state::Gas;
    return state;
static command_result GetMaterialList(color_ostream &stream, const EmptyMessage *in, MaterialList *out)
    if (!Core::getInstance().isWorldLoaded()) {
        //out->set_available(false);
        return CR_OK;
    df::world_raws *raws = &world->raws;
    MaterialInfo mat;
    for (int i = 0; i < raws->inorganics.size(); i++)
        mat.decode(0, i);
        MaterialDefinition *mat_def = out->add_material_list();
        mat_def->mutable_mat_pair()->set_mat_type(0);
        mat_def->mutable_mat_pair()->set_mat_index(i);
        mat_def->set_id(mat.getToken());
        mat_def->set_name(mat.toString()); //find the name at cave temperature;
        if (raws->inorganics[i]->material.state_color[GetState(&raws->inorganics[i]->material)] < raws->language.colors.size())
            df::descriptor_color *color = raws->language.colors[raws->inorganics[i]->material.state_color[GetState(&raws->inorganics[i]->material)]];
            mat_def->mutable_state_color()->set_red(color->red * 255);
            mat_def->mutable_state_color()->set_green(color->green * 255);
            mat_def->mutable_state_color()->set_blue(color->blue * 255);
    for (int i = 1; i < 19; i++)
        int k = 0;
        if (i == 7)
            k = 1;// for coal.
        for (int j = 0; j <= k; j++)
            mat.decode(i, j);
            MaterialDefinition *mat_def = out->add_material_list();
            mat_def->mutable_mat_pair()->set_mat_type(i);
            mat_def->mutable_mat_pair()->set_mat_index(j);
            mat_def->set_id(mat.getToken());
            mat_def->set_name(mat.toString()); //find the name at cave temperature;
            if (raws->mat_table.builtin[i]->state_color[GetState(raws->mat_table.builtin[i])] < raws->language.colors.size())
                df::descriptor_color *color = raws->language.colors[raws->mat_table.builtin[i]->state_color[GetState(raws->mat_table.builtin[i])]];
                mat_def->mutable_state_color()->set_red(color->red * 255);
                mat_def->mutable_state_color()->set_green(color->green * 255);
                mat_def->mutable_state_color()->set_blue(color->blue * 255);
    for (int i = 0; i < raws->creatures.all.size(); i++)
        df::creature_raw * creature = raws->creatures.all[i];
        for (int j = 0; j < creature->material.size(); j++)
            mat.decode(j + 19, i);
            MaterialDefinition *mat_def = out->add_material_list();
            mat_def->mutable_mat_pair()->set_mat_type(j + 19);
            mat_def->mutable_mat_pair()->set_mat_index(i);
            mat_def->set_id(mat.getToken());
            mat_def->set_name(mat.toString()); //find the name at cave temperature;
            if (creature->material[j]->state_color[GetState(creature->material[j])] < raws->language.colors.size())
                df::descriptor_color *color = raws->language.colors[creature->material[j]->state_color[GetState(creature->material[j])]];
                mat_def->mutable_state_color()->set_red(color->red * 255);
                mat_def->mutable_state_color()->set_green(color->green * 255);
                mat_def->mutable_state_color()->set_blue(color->blue * 255);
    for (int i = 0; i < raws->plants.all.size(); i++)
        df::plant_raw * plant = raws->plants.all[i];
        for (int j = 0; j < plant->material.size(); j++)
            mat.decode(j + 419, i);
            MaterialDefinition *mat_def = out->add_material_list();
            mat_def->mutable_mat_pair()->set_mat_type(j + 419);
            mat_def->mutable_mat_pair()->set_mat_index(i);
            mat_def->set_id(mat.getToken());
            mat_def->set_name(mat.toString()); //find the name at cave temperature;
            if (plant->material[j]->state_color[GetState(plant->material[j])] < raws->language.colors.size())
                df::descriptor_color *color = raws->language.colors[plant->material[j]->state_color[GetState(plant->material[j])]];
                mat_def->mutable_state_color()->set_red(color->red * 255);
                mat_def->mutable_state_color()->set_green(color->green * 255);
                mat_def->mutable_state_color()->set_blue(color->blue * 255);
    return CR_OK;
static command_result GetGrowthList(color_ostream &stream, const EmptyMessage *in, MaterialList *out)
    if (!Core::getInstance().isWorldLoaded()) {
        //out->set_available(false);
        return CR_OK;
    df::world_raws *raws = &world->raws;
    if (!raws)
        return CR_OK;//'.
    for (int i = 0; i < raws->plants.all.size(); i++)
        df::plant_raw * pp = raws->plants.all[i];
        if (!pp)
            continue;
        MaterialDefinition * basePlant = out->add_material_list();
        basePlant->set_id(pp->id + ":BASE");
        basePlant->set_name(pp->name);
        basePlant->mutable_mat_pair()->set_mat_type(-1);
        basePlant->mutable_mat_pair()->set_mat_index(i);
        for (int g = 0; g < pp->growths.size(); g++)
            df::plant_growth* growth = pp->growths[g];
            if (!growth)
                continue;
            for (int l = 0; l < GROWTH_LOCATIONS_SIZE; l++)
                MaterialDefinition * out_growth = out->add_material_list();
                out_growth->set_id(pp->id + ":" + growth->id + +":" + growth_locations[l]);
                out_growth->set_name(growth->name);
                out_growth->mutable_mat_pair()->set_mat_type(g * 10 + l);
                out_growth->mutable_mat_pair()->set_mat_index(i);
    return CR_OK;
void CopyBlock(df::map_block * DfBlock, RemoteFortressReader::MapBlock * NetBlock, MapExtras::MapCache * MC, DFCoord pos)
    NetBlock->set_map_x(DfBlock->map_pos.x);
    NetBlock->set_map_y(DfBlock->map_pos.y);
    NetBlock->set_map_z(DfBlock->map_pos.z);
    MapExtras::Block * block = MC->BlockAtTile(DfBlock->map_pos);
        for (int yy = 0; yy < 16; yy++)
            for (int xx = 0; xx < 16; xx++)
                df::tiletype tile = DfBlock->tiletype[xx][yy];
                NetBlock->add_tiles(tile);
                df::coord2d p = df::coord2d(xx, yy);
                t_matpair baseMat = block->baseMaterialAt(p);
                t_matpair staticMat = block->staticMaterialAt(p);
                RemoteFortressReader::MatPair * material = NetBlock->add_materials();
                material->set_mat_type(staticMat.mat_type);
                material->set_mat_index(staticMat.mat_index);
                RemoteFortressReader::MatPair * layerMaterial = NetBlock->add_layer_materials();
                layerMaterial->set_mat_type(0);
                layerMaterial->set_mat_index(block->layerMaterialAt(p));
                RemoteFortressReader::MatPair * veinMaterial = NetBlock->add_vein_materials();
                veinMaterial->set_mat_type(0);
                veinMaterial->set_mat_index(block->veinMaterialAt(p));
                RemoteFortressReader::MatPair * baseMaterial = NetBlock->add_base_materials();
                baseMaterial->set_mat_type(baseMat.mat_type);
                baseMaterial->set_mat_index(baseMat.mat_index);
void CopyDesignation(df::map_block * DfBlock, RemoteFortressReader::MapBlock * NetBlock, MapExtras::MapCache * MC, DFCoord pos)
    NetBlock->set_map_x(DfBlock->map_pos.x);
    NetBlock->set_map_y(DfBlock->map_pos.y);
    NetBlock->set_map_z(DfBlock->map_pos.z);
    for (int yy = 0; yy < 16; yy++)
        for (int xx = 0; xx < 16; xx++)
            df::tile_designation designation = DfBlock->designation[xx][yy];
            int lava = 0;
            int water = 0;
            if (designation.bits.liquid_type == df::enums::tile_liquid::Magma)
                lava = designation.bits.flow_size;
            else
                water = designation.bits.flow_size;
            NetBlock->add_magma(lava);
            NetBlock->add_water(water);
            NetBlock->add_aquifer(designation.bits.water_table);
            NetBlock->add_hidden(designation.bits.hidden);
            NetBlock->add_light(designation.bits.light);
            NetBlock->add_outside(designation.bits.outside);
            NetBlock->add_subterranean(designation.bits.subterranean);
            NetBlock->add_water_salt(designation.bits.water_salt);
            NetBlock->add_water_stagnant(designation.bits.water_stagnant);
static command_result GetBlockList(color_ostream &stream, const BlockRequest *in, BlockList *out)
    int x, y, z;
    DFHack::Maps::getPosition(x, y, z);
    out->set_map_x(x);
    out->set_map_y(y);
    MapExtras::MapCache MC;
    int center_x = (in->min_x() + in->max_x()) / 2;
    int center_y = (in->min_y() + in->max_y()) / 2;
    int NUMBER_OF_POINTS = ((in->max_x() - center_x + 1) * 2) * ((in->max_y() - center_y + 1) * 2);
    int blocks_needed;
    if (in->has_blocks_needed())
        blocks_needed = in->blocks_needed();
        blocks_needed = NUMBER_OF_POINTS*(in->max_z() - in->min_z());
    int blocks_sent = 0;
    int min_x = in->min_x();
    int min_y = in->min_y();
    int max_x = in->max_x();
    int max_y = in->max_y();
    //stream.print("Got request for blocks from (%d, %d, %d) to (%d, %d, %d).\n", in->min_x(), in->min_y(), in->min_z(), in->max_x(), in->max_y(), in->max_z());
    for (int zz = in->max_z()-1; zz >= in->min_z(); zz--)
        // (di, dj) is a vector - direction in which we move right now
        int di = 1;
        int dj = 0;
        // length of current segment
        int segment_length = 1;
        // current position (i, j) and how much of current segment we passed
        int i = center_x;
        int j = center_y;
        int segment_passed = 0;
        for (int k = 0; k < NUMBER_OF_POINTS; ++k)
            if (blocks_sent >= blocks_needed)
                break;
            if (!(i < min_x || i >= max_x || j < min_y || j >= max_y))
                DFCoord pos = DFCoord(i, j, zz);
                df::map_block * block = DFHack::Maps::getBlock(pos);
                if (block != NULL)
                    int nonAir = 0;
                    for (int xxx = 0; xxx < 16; xxx++)
                        for (int yyy = 0; yyy < 16; yyy++)
                            if ((DFHack::tileShapeBasic(DFHack::tileShape(block->tiletype[xxx][yyy])) != df::tiletype_shape_basic::None &&
                                DFHack::tileShapeBasic(DFHack::tileShape(block->tiletype[xxx][yyy])) != df::tiletype_shape_basic::Open) ||
                                block->designation[xxx][yyy].bits.flow_size > 0)
                                nonAir++;
                    if (nonAir > 0)
                        bool tileChanged = IsTiletypeChanged(pos);
                        bool desChanged = IsDesignationChanged(pos);
                        RemoteFortressReader::MapBlock *net_block;
                        if (tileChanged || desChanged)
                            net_block = out->add_map_blocks();
                        if (tileChanged)
                            CopyBlock(block, net_block, &MC, pos);
                            blocks_sent++;
                        if (desChanged)
                            CopyDesignation(block, net_block, &MC, pos);
            // make a step, add 'direction' vector (di, dj) to current position (i, j)
            i += di;
            j += dj;
            ++segment_passed;
            //System.out.println(i + " " + j);
            if (segment_passed == segment_length)
                // done with current segment
                segment_passed = 0;
                // 'rotate' directions
                int buffer = di;
                di = -dj;
                dj = buffer;
                // increase segment length if necessary
                if (dj == 0) {
                    ++segment_length;
        //for (int yy = in->min_y(); yy < in->max_y(); yy++)
        //{
        //    for (int xx = in->min_x(); xx < in->max_x(); xx++)
        //        DFCoord pos = DFCoord(xx, yy, zz);
        //        df::map_block * block = DFHack::Maps::getBlock(pos);
        //        if (block == NULL)
        //            continue;
        //            RemoteFortressReader::MapBlock *net_block = out->add_map_blocks();
        //            CopyBlock(block, net_block, &MC, pos);
        //}
    MC.trash();
    return CR_OK;
static command_result GetTiletypeList(color_ostream &stream, const EmptyMessage *in, TiletypeList *out)
    int count = 0;
    FOR_ENUM_ITEMS(tiletype, tt)
        Tiletype * type = out->add_tiletype_list();
        type->set_id(tt);
        type->set_name(ENUM_KEY_STR(tiletype, tt));
        const char * name = tileName(tt);
        if (name != NULL && name[0] != 0)
            type->set_caption(name);
        type->set_shape(TranslateShape(tileShape(tt)));
        type->set_special(TranslateSpecial(tileSpecial(tt)));
        type->set_material(TranslateMaterial(tileMaterial(tt)));
        type->set_variant(TranslateVariant(tileVariant(tt)));
        type->set_direction(tileDirection(tt).getStr());
        count++;
    return CR_OK;
static command_result GetPlantList(color_ostream &stream, const BlockRequest *in, PlantList *out)
    int min_x = in->min_x() / 3;
    int min_y = in->min_y() / 3;
    int min_z = in->min_z();
    int max_x = in->max_x() / 3;
    int max_y = in->max_y() / 3;
    int max_z = in->max_z();
    for (int xx = min_x; xx < max_x; xx++)
        for (int yy = min_y; yy < max_y; yy++)
            if (xx < 0 || yy < 0 || xx >= world->map.x_count_block || yy >= world->map.y_count_block)
                continue;
            df::map_block_column * column = world->map.column_index[xx][yy];
            for (int i = 0; i < column->plants.size(); i++)
                df::plant * plant = column->plants[i];
                if (!plant->tree_info)
                    if (plant->pos.z < min_z || plant->pos.z >= max_z)
                        continue;
                    if (plant->pos.x < in->min_x() * 16 || plant->pos.x >= in->max_x() * 16)
                        continue;
                    if (plant->pos.y < in->min_y() * 16 || plant->pos.y >= in->max_y() * 16)
                        continue;
                    if (plant->pos.z - plant->tree_info->roots_depth < min_z || plant->pos.z + plant->tree_info->body_height > max_z)
                        continue;
                    if (plant->pos.x - plant->tree_info->dim_x / 2 < in->min_x() * 16 || plant->pos.x + plant->tree_info->dim_x / 2 >= in->max_x() * 16)
                        continue;
                    if (plant->pos.y - plant->tree_info->dim_y / 2 < in->min_y() * 16 || plant->pos.y + plant->tree_info->dim_y / 2 >= in->max_y() * 16)
                        continue;
                RemoteFortressReader::PlantDef * out_plant = out->add_plant_list();
                out_plant->set_index(plant->material);
                out_plant->set_pos_x(plant->pos.x);
                out_plant->set_pos_y(plant->pos.y);
                out_plant->set_pos_z(plant->pos.z);
    return CR_OK;
static command_result GetUnitList(color_ostream &stream, const EmptyMessage *in, UnitList *out)
    auto world = df::global::world;
    for (int i = 0; i < world->units.all.size(); i++)
        auto unit = world->units.all[i];
        auto send_unit = out->add_creature_list();
        send_unit->set_id(unit->id);
        send_unit->set_pos_x(unit->pos.x);
        send_unit->set_pos_y(unit->pos.y);
        send_unit->set_pos_z(unit->pos.z);
    return CR_OK;
static command_result GetViewInfo(color_ostream &stream, const EmptyMessage *in, ViewInfo *out)
    int x, y, z, w, h, cx, cy, cz;
    Gui::getWindowSize(w, h);
    Gui::getViewCoords(x, y, z);
    Gui::getCursorCoords(cx, cy, cz);
    out->set_view_pos_x(x);
    out->set_view_pos_y(y);
    out->set_view_pos_z(z);
    out->set_view_size_x(w);
    out->set_view_size_y(h);
    out->set_cursor_pos_x(cx);
    out->set_cursor_pos_y(cy);
    out->set_cursor_pos_z(cz);
    return CR_OK;
static command_result GetMapInfo(color_ostream &stream, const EmptyMessage *in, MapInfo *out)
    uint32_t size_x, size_y, size_z;
    int32_t pos_x, pos_y, pos_z;
    Maps::getSize(size_x, size_y, size_z);
    Maps::getPosition(pos_x, pos_y, pos_z);
    out->set_block_size_x(size_x);
    out->set_block_size_y(size_y);
    out->set_block_size_z(size_z);
    out->set_block_pos_x(pos_x);
    out->set_block_pos_y(pos_y);
    out->set_block_pos_z(pos_z);
    out->set_world_name(DF2UTF(Translation::TranslateName(&df::global::world->world_data->name, false)));
    out->set_world_name_english(DF2UTF(Translation::TranslateName(&df::global::world->world_data->name, true)));
    out->set_save_name(df::global::world->cur_savegame.save_dir);
    return CR_OK;
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