376 lines
8.7 KiB
C++
376 lines
8.7 KiB
C++
/*
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* =====================================================================
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* Version: 1.0
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* Created: 23.08.2012 12:35:53
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* Author: Miroslav Bendík
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* Company: LinuxOS.sk
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* =====================================================================
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*/
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#include <cstdio>
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#include <cstdlib>
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#include <fstream>
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#include <iostream>
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#include <sstream>
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#include <vector>
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#include <zlib.h>
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#include "TileGenerator.h"
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using namespace std;
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TileGenerator::TileGenerator():
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m_bgColor(255, 255, 255),
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m_scaleColor(0, 0, 0),
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m_originColor(255, 0, 0),
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m_playerColor(255, 0, 0),
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m_drawOrigin(false),
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m_drawPlayers(false),
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m_drawScale(false),
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m_drawUnderground(false),
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m_db(0),
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m_image(0),
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m_xMin(0),
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m_xMax(0),
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m_zMin(0),
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m_zMax(0)
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{
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}
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TileGenerator::~TileGenerator()
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{
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if (m_db != 0) {
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sqlite3_close(m_db);
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m_db = 0;
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}
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}
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void TileGenerator::setBgColor(const std::string &bgColor)
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{
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m_bgColor = parseColor(bgColor);
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}
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void TileGenerator::setScaleColor(const std::string &scaleColor)
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{
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m_scaleColor = parseColor(scaleColor);
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}
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void TileGenerator::setOriginColor(const std::string &originColor)
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{
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m_originColor = parseColor(originColor);
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}
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void TileGenerator::setPlayerColor(const std::string &playerColor)
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{
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m_playerColor = parseColor(playerColor);
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}
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Color TileGenerator::parseColor(const std::string &color)
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{
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Color parsed;
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if (color.length() != 7) {
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throw ColorError();
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}
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if (color[0] != '#') {
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throw ColorError();
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}
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long col = strtol(color.c_str() + 1, NULL, 16);
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parsed.b = col % 256;
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col = col / 256;
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parsed.g = col % 256;
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col = col / 256;
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parsed.r = col % 256;
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return parsed;
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}
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void TileGenerator::setDrawOrigin(bool drawOrigin)
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{
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m_drawOrigin = drawOrigin;
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}
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void TileGenerator::setDrawPlayers(bool drawPlayers)
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{
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m_drawPlayers = drawPlayers;
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}
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void TileGenerator::setDrawScale(bool drawScale)
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{
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m_drawScale = drawScale;
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}
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void TileGenerator::setDrawUnderground(bool drawUnderground)
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{
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m_drawUnderground = drawUnderground;
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}
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void TileGenerator::parseColorsFile(const std::string &fileName)
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{
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ifstream in;
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in.open(fileName.c_str(), ifstream::in);
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if (!in.is_open()) {
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std::cerr << "File colors.txt does not exist" << std::endl;
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exit(-2);
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}
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while (in.good()) {
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string name;
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Color color;
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in >> name;
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if (name[0] == '#') {
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in.ignore(65536, '\n');
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in >> name;
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}
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while (name == "\n" && in.good()) {
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in >> name;
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}
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int r, g, b;
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in >> r;
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in >> g;
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in >> b;
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if (in.good()) {
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m_colors[name] = color;
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color.r = r;
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color.g = g;
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color.b = b;
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}
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}
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}
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void TileGenerator::generate(const std::string &input, const std::string &output)
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{
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openDb(input);
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loadBlocks();
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createImage();
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renderMap();
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writeImage(output);
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}
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void TileGenerator::openDb(const std::string &input)
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{
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string db_name = input + "map.sqlite";
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if (sqlite3_open(db_name.c_str(), &m_db) != SQLITE_OK) {
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throw DbError();
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}
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}
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void TileGenerator::loadBlocks()
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{
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sqlite3_stmt *statement;
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string sql = "SELECT pos FROM blocks";
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if (sqlite3_prepare_v2(m_db, sql.c_str(), sql.length(), &statement, 0) == SQLITE_OK) {
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int result = 0;
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while (true) {
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result = sqlite3_step(statement);
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if(result == SQLITE_ROW) {
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sqlite3_int64 blocknum = sqlite3_column_int64(statement, 0);
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BlockPos pos = decodeBlockPos(blocknum);
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if (pos.x > SectorXMax || pos.x < SectorXMin || pos.z > SectorZMax || pos.z < SectorZMin) {
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continue;
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}
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if (pos.x < m_xMin) {
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m_xMin = pos.x;
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}
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if (pos.x > m_xMax) {
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m_xMax = pos.x;
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}
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if (pos.z < m_zMin) {
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m_zMin = pos.z;
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}
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if (pos.z > m_zMax) {
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m_zMax = pos.z;
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}
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m_positions.push_back(std::pair<int, int>(pos.x, pos.z));
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}
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else {
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break;
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}
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}
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m_positions.sort();
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m_positions.unique();
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}
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else {
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throw DbError();
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}
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}
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inline BlockPos TileGenerator::decodeBlockPos(sqlite3_int64 blockId) const
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{
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BlockPos pos;
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pos.x = unsignedToSigned(blockId % 4096, 2048);
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blockId = (blockId - pos.x) / 4096;
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pos.y = unsignedToSigned(blockId % 4096, 2048);
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blockId = (blockId - pos.y) / 4096;
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pos.z = unsignedToSigned(blockId % 4096, 2048);
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return pos;
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}
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inline sqlite3_int64 TileGenerator::encodeBlockPos(int x, int y, int z) const
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{
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return sqlite3_int64(z) * 16777216l + sqlite3_int64(y) * 4096l + sqlite3_int64(x);
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}
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inline int TileGenerator::unsignedToSigned(long i, long max_positive) const
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{
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if (i < max_positive) {
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return i;
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}
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else {
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return i - 2l * max_positive;
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}
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}
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void TileGenerator::createImage()
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{
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m_imgWidth = (m_xMax - m_xMin) * 16;
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m_imgHeight = (m_zMax - m_zMin) * 16;
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m_image = gdImageCreate(m_imgWidth, m_imgHeight);
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// Background
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gdImageColorAllocate(m_image, m_bgColor.r, m_bgColor.g, m_bgColor.b);
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}
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void TileGenerator::renderMap()
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{
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sqlite3_stmt *statement;
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string sql = "SELECT pos, data FROM blocks WHERE pos >= ? AND pos <= ?";
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if (sqlite3_prepare_v2(m_db, sql.c_str(), sql.length(), &statement, 0) != SQLITE_OK) {
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throw DbError();
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}
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std::list<int> zlist = getZValueList();
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for (std::list<int>::iterator zPosition = zlist.begin(); zPosition != zlist.end(); ++zPosition) {
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int zPos = *zPosition;
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map<int, BlockList> blocks = getBlocksOnZ(zPos, statement);
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for (std::list<std::pair<int, int> >::const_iterator position = m_positions.begin(); position != m_positions.end(); ++position) {
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if (position->second != zPos) {
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continue;
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}
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int xPos = position->first;
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blocks[xPos].sort();
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const BlockList &blockStack = blocks[xPos];
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for (BlockList::const_iterator it = blockStack.begin(); it != blockStack.end(); ++it) {
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//const BlockPos &pos = it->first;
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const char *data = it->second.c_str();
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size_t length = it->second.length();
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uint8_t version = data[0];
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//uint8_t flags = data[1];
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size_t dataOffset = 0;
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if (version >= 22) {
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dataOffset = 4;
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}
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else {
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dataOffset = 2;
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}
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size_t processed;
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string mapData = zlibDecompress(data + dataOffset, length - dataOffset, &processed);
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dataOffset += processed;
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string mapMetadata = zlibDecompress(data + dataOffset, length - dataOffset, &processed);
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if (version <= 21) {
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dataOffset += 2;
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}
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if (version == 23) {
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dataOffset += 1;
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}
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if (version == 24) {
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uint8_t ver = data[dataOffset + 1];
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dataOffset++;
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if (ver == 1) {
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int num = int(data[dataOffset + 1]) * 256 + data[dataOffset + 2];
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dataOffset += 10 * num + 2;
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}
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}
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}
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}
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}
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}
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inline std::list<int> TileGenerator::getZValueList() const
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{
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std::list<int> zlist;
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for (std::list<std::pair<int, int> >::const_iterator position = m_positions.begin(); position != m_positions.end(); ++position) {
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zlist.push_back(position->second);
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}
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zlist.sort();
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zlist.unique();
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return zlist;
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}
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std::map<int, TileGenerator::BlockList> TileGenerator::getBlocksOnZ(int zPos, sqlite3_stmt *statement) const
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{
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map<int, BlockList> blocks;
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sqlite3_int64 psMin = encodeBlockPos(-2048, -2048, zPos);
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sqlite3_int64 psMax = encodeBlockPos( 2047, 2047, zPos);
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std::stringstream minStream;
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std::stringstream maxStream;
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minStream << psMin;
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maxStream << psMax;
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string minStr = minStream.str();
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string maxStr = maxStream.str();
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sqlite3_bind_text(statement, 1, minStr.c_str(), -1, SQLITE_TRANSIENT);
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sqlite3_bind_text(statement, 2, maxStr.c_str(), -1, SQLITE_TRANSIENT);
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int result = 0;
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while (true) {
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result = sqlite3_step(statement);
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if(result == SQLITE_ROW) {
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sqlite3_int64 blocknum = sqlite3_column_int64(statement, 0);
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const char *data = reinterpret_cast<const char *>(sqlite3_column_blob(statement, 1));
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int size = sqlite3_column_bytes(statement, 1);
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BlockPos pos = decodeBlockPos(blocknum);
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blocks[pos.x].push_back(Block(pos, string(data, size)));
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}
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else {
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break;
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}
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}
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sqlite3_reset(statement);
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return blocks;
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}
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void TileGenerator::writeImage(const std::string &output)
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{
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FILE *out;
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out = fopen(output.c_str(), "w");
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gdImagePng(m_image, out);
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fclose(out);
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gdImageDestroy(m_image);
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}
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inline std::string TileGenerator::zlibDecompress(const char *data, std::size_t size, std::size_t *processed) const
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{
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string buffer;
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const size_t BUFSIZE = 128 * 1024;
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uint8_t temp_buffer[BUFSIZE];
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z_stream strm;
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strm.zalloc = Z_NULL;
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strm.zfree = Z_NULL;
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strm.opaque = Z_NULL;
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strm.next_in = Z_NULL;
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strm.avail_in = size;
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if (inflateInit(&strm) != Z_OK) {
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throw DecompressError();
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}
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strm.next_in = reinterpret_cast<Bytef *>(const_cast<char *>(data));
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int ret = 0;
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do {
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strm.avail_out = BUFSIZE;
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strm.next_out = temp_buffer;
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ret = inflate(&strm, Z_NO_FLUSH);
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buffer += string(reinterpret_cast<char *>(temp_buffer), BUFSIZE - strm.avail_out);
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} while (ret == Z_OK);
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if (ret != Z_STREAM_END) {
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throw DecompressError();
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}
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*processed = (const char *)strm.next_in - (const char *)data;
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(void)inflateEnd(&strm);
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return buffer;
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}
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