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main.cpp
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main.cpp
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/***
* mcmap - create isometric maps of your minecraft alpha/beta world
* v2.0e, 02-2011 by Zahl
*/
#include "helper.h"
#include "draw_png.h"
#include "colors.h"
#include "worldloader.h"
#include "globals.h"
#include <string>
#include <cstring>
#include <cstdio>
#include <cstdlib>
#include <ctime>
#ifdef _DEBUG
#include <cassert>
#endif
#ifndef _WIN32
#include <sys/stat.h>
#endif
#if defined(_WIN32) && !defined(__GNUC__)
# include <direct.h>
#endif
using std::string;
namespace
{
// For bright edge
bool gAtBottomLeft = true, gAtBottomRight = true;
}
// Macros to make code more readable
#define BLOCK_AT_MAPEDGE(x,z) (((z)+1 == g_MapsizeZ-CHUNKSIZE_Z && gAtBottomLeft) || ((x)+1 == g_MapsizeX-CHUNKSIZE_X && gAtBottomRight))
void optimizeTerrain2(int cropLeft, int cropRight);
void optimizeTerrain3();
void undergroundMode(bool explore);
bool prepareNextArea(int splitX, int splitZ, int &bitmapStartX, int &bitmapStartY);
void writeInfoFile(const char* file, int xo, int yo);
static const inline int floorChunkX(const int val);
static const inline int floorChunkZ(const int val);
static inline bool isOceanWater(size_t x, size_t y, size_t z);
void printHelp(char *binary);
int main(int argc, char **argv)
{
// ########## command line parsing ##########
if (argc < 2) {
printHelp(argv[0]);
return 1;
}
bool wholeworld = false;
char *filename = NULL, *outfile = NULL, *colorfile = NULL, *texturefile = NULL, *infoFile = NULL;
bool dumpColors = false;
char *biomepath = NULL;
uint64_t memlimit;
if (sizeof(size_t) < 8) {
memlimit = 1500 * uint64_t(1024 * 1024);
} else {
memlimit = 2000 * uint64_t(1024 * 1024);
}
bool memlimitSet = false;
// First, for the sake of backward compatibility, try to parse command line arguments the old way first
if (argc >= 7
&& isNumeric(argv[1]) && isNumeric(argv[2]) && isNumeric(argv[3]) && isNumeric(argv[4])) { // Specific area of world
g_FromChunkX = atoi(argv[1]);
g_FromChunkZ = atoi(argv[2]);
g_ToChunkX = atoi(argv[3]) + 1;
g_ToChunkZ = atoi(argv[4]) + 1;
g_MapsizeY = atoi(argv[5]);
filename = argv[6];
if (argc > 7) {
g_Nightmode = (atoi(argv[7]) == 1);
g_Underground = (atoi(argv[7]) == 2);
}
} else if (argc == 3 && isNumeric(argv[2])) { // Whole world - old way
filename = argv[1];
g_Nightmode = (atoi(argv[2]) == 1);
g_Underground = (atoi(argv[2]) == 2);
} else { // -- New command line parsing --
# define MOREARGS(x) (argpos + (x) < argc)
# define NEXTARG argv[++argpos]
# define POLLARG(x) argv[argpos + (x)]
int argpos = 0;
while (MOREARGS(1)) {
const char *option = NEXTARG;
if (strcmp(option, "-from") == 0) {
if (!MOREARGS(2) || !isNumeric(POLLARG(1)) || !isNumeric(POLLARG(2))) {
printf("Error: %s needs two integer arguments, ie: %s -10 5\n", option, option);
return 1;
}
g_FromChunkX = atoi(NEXTARG);
g_FromChunkZ = atoi(NEXTARG);
} else if (strcmp(option, "-to") == 0) {
if (!MOREARGS(2) || !isNumeric(POLLARG(1)) || !isNumeric(POLLARG(2))) {
printf("Error: %s needs two integer arguments, ie: %s -5 20\n", option, option);
return 1;
}
g_ToChunkX = atoi(NEXTARG) + 1;
g_ToChunkZ = atoi(NEXTARG) + 1;
} else if (strcmp(option, "-night") == 0) {
g_Nightmode = true;
} else if (strcmp(option, "-ocean") == 0) {
if (!MOREARGS(1) || !isNumeric(POLLARG(1))) {
printf("Error: %s needs an integer argument, ie: %s 6\n", option, option);
return 1;
}
g_Oceanmode = true;
g_Oceanlevel = atoi(NEXTARG);
if (g_Oceanlevel < 1 || g_Oceanlevel > 15) {
printf("Error: %s needs an integer in the interval (1-15)\n", option);
return 1;
}
} else if (strcmp(option, "-cave") == 0 || strcmp(option, "-caves") == 0 || strcmp(option, "-underground") == 0) {
g_Underground = true;
} else if (strcmp(option, "-blendcave") == 0 || strcmp(option, "-blendcaves") == 0) {
g_BlendUnderground = true;
} else if (strcmp(option, "-skylight") == 0) {
g_Skylight = true;
} else if (strcmp(option, "-nether") == 0 || strcmp(option, "-hell") == 0 || strcmp(option, "-slip") == 0) {
g_Hell = true;
} else if (strcmp(option, "-serverhell") == 0) {
g_ServerHell = true;
} else if (strcmp(option, "-biomes") == 0) {
g_UseBiomes = true;
} else if (strcmp(option, "-biomecolors") == 0) {
if (!MOREARGS(1)) {
printf("Error: %s needs path to grasscolor.png and foliagecolor.png, ie: %s ./subdir\n", option, option);
return 1;
}
g_UseBiomes = true;
biomepath = NEXTARG;
} else if (strcmp(option, "-png") == 0) {
// void
} else if (strcmp(option, "-blendall") == 0) {
g_BlendAll = true;
} else if (strcmp(option, "-noise") == 0 || strcmp(option, "-dither") == 0) {
if (!MOREARGS(1) || !isNumeric(POLLARG(1))) {
printf("Error: %s needs an integer argument, ie: %s 10\n", option, option);
return 1;
}
g_Noise = atoi(NEXTARG);
} else if (strcmp(option, "-height") == 0 || strcmp(option, "-max") == 0) {
if (!MOREARGS(1) || !isNumeric(POLLARG(1))) {
printf("Error: %s needs an integer argument, ie: %s 100\n", option, option);
return 1;
}
g_MapsizeY = atoi(NEXTARG);
if (strcmp(option, "-max") == 0) g_MapsizeY++;
} else if (strcmp(option, "-min") == 0) {
if (!MOREARGS(1) || !isNumeric(POLLARG(1))) {
printf("Error: %s needs an integer argument, ie: %s 50\n", option, option);
return 1;
}
g_MapminY = atoi(NEXTARG);
} else if (strcmp(option, "-mem") == 0) {
if (!MOREARGS(1) || !isNumeric(POLLARG(1)) || atoi(POLLARG(1)) <= 0) {
printf("Error: %s needs a positive integer argument, ie: %s 1000\n", option, option);
return 1;
}
memlimitSet = true;
memlimit = size_t (atoi(NEXTARG)) * size_t (1024 * 1024);
} else if (strcmp(option, "-file") == 0) {
if (!MOREARGS(1)) {
printf("Error: %s needs one argument, ie: %s myworld.bmp\n", option, option);
return 1;
}
outfile = NEXTARG;
} else if (strcmp(option, "-colors") == 0) {
if (!MOREARGS(1)) {
printf("Error: %s needs one argument, ie: %s colors.txt\n", option, option);
return 1;
}
colorfile = NEXTARG;
} else if (strcmp(option, "-texture") == 0) {
if (!MOREARGS(1)) {
printf("Error: %s needs one argument, ie: %s terrain.png\n", option, option);
return 1;
}
texturefile = NEXTARG;
} else if (strcmp(option, "-info") == 0) {
if (!MOREARGS(1)) {
printf("Error: %s needs one argument, ie: %s data.json\n", option, option);
return 1;
}
infoFile = NEXTARG;
} else if (strcmp(option, "-dumpcolors") == 0) {
dumpColors = true;
} else if (strcmp(option, "-north") == 0) {
g_Orientation = North;
} else if (strcmp(option, "-south") == 0) {
g_Orientation = South;
} else if (strcmp(option, "-east") == 0) {
g_Orientation = East;
} else if (strcmp(option, "-west") == 0) {
g_Orientation = West;
} else if (strcmp(option, "-3") == 0) {
g_OffsetY = 3;
} else if (strcmp(option, "-split") == 0) {
if (!MOREARGS(1)) {
printf("Error: %s needs a path argument, ie: %s tiles/\n", option, option);
return 1;
}
g_TilePath = NEXTARG;
} else if (strcmp(option, "-help") == 0 || strcmp(option, "-h") == 0 || strcmp(option, "-?") == 0) {
printHelp(argv[0]);
return 0;
} else if (strcmp(option, "-marker") == 0) {
if (g_MarkerCount >= MAX_MARKERS) {
printf("Too many markers, ignoring additional ones\n");
continue;
}
if (!MOREARGS(3) || !isNumeric(POLLARG(2)) || !isNumeric(POLLARG(3))) {
printf("Error: %s needs a char and two integer arguments, ie: %s r -15 240\n", option, option);
return 1;
}
Marker &marker = g_Markers[g_MarkerCount];
switch (*NEXTARG) {
case 'r':
marker.color = 253;
break;
case 'g':
marker.color = 244;
break;
case 'b':
marker.color = 242;
break;
default:
marker.color = 35;
}
int x = atoi(NEXTARG);
int z = atoi(NEXTARG);
marker.chunkX = floorChunkX(x);
marker.chunkZ = floorChunkZ(z);
marker.offsetX = x - (marker.chunkX * CHUNKSIZE_X);
marker.offsetZ = z - (marker.chunkZ * CHUNKSIZE_Z);
g_MarkerCount++;
} else {
filename = (char *) option;
}
}
wholeworld = (g_FromChunkX == UNDEFINED || g_ToChunkX == UNDEFINED);
}
// ########## end of command line parsing ##########
if (g_Hell || g_ServerHell) g_UseBiomes = false;
printf("mcmap " VERSION "\n");
if (sizeof(size_t) < 8 && memlimit > 1800 * uint64_t(1024 * 1024)) {
memlimit = 1800 * uint64_t(1024 * 1024);
}
// Load colormap from file
loadColors(); // Default base, in case some are missing in colors.txt (if used)
// Load files from colors.txt
if (colorfile != NULL && fileExists(colorfile)) {
if (!loadColorsFromFile(colorfile)) {
printf("Error loading colors from %s: Opening failed.\n", colorfile);
return 1;
}
} else if (colorfile != NULL) {
printf("Error loading colors from %s: File not found.\n", colorfile);
return 1;
}
// Extract colors from terrain.png
if (texturefile != NULL && fileExists(texturefile)) {
if (!extractColors(texturefile)) {
printf("Error extracting colors from %s: Opening failed (not a valid terrain png?).\n", texturefile);
return 1;
}
} else if (texturefile != NULL) {
printf("Error loading colors from %s: File not found.\n", texturefile);
return 1;
}
// If colors should be dumped to file, exit afterwards
if (dumpColors) {
if (!dumpColorsToFile("defaultcolors.txt")) {
printf("Could not dump colors to defaultcolors.txt, error opening file.\n");
return 1;
}
printf("Colors written to defaultcolors.txt\n");
return 0;
}
if (filename == NULL) {
printf("Error: No world given. Please add the path to your world to the command line.\n");
return 1;
}
if (!isAlphaWorld(filename)) {
printf("Error: Given path does not contain an alpha/beta world.\n");
return 1;
}
if (g_Hell) {
char *tmp = new char[strlen(filename) + 20];
strcpy(tmp, filename);
strcat(tmp, "/DIM-1");
if (!dirExists(tmp)) {
printf("Error: This world does not have a hell world yet. Build a portal first!\n");
return 1;
}
filename = tmp;
}
{ // Figure out whether this is the old save format or McRegion
char tmp[1000];
snprintf(tmp, 1000, "%s/region", filename);
if (dirExists(tmp)) {
printf("McRegion world format detected.\n");
g_RegionFormat = true;
}
}
if (g_MapsizeY > CHUNKSIZE_Y) {
g_MapsizeY = CHUNKSIZE_Y;
}
if (g_MapminY > CHUNKSIZE_Y) {
g_MapminY = CHUNKSIZE_Y;
}
if (wholeworld && !scanWorldDirectory(filename)) {
printf("Error accessing terrain at '%s'\n", filename);
return 1;
}
if (g_ToChunkX <= g_FromChunkX || g_ToChunkZ <= g_FromChunkZ) {
printf("Nothing to render: -from X Z has to be <= -to X Z\n");
return 1;
}
if (g_MapsizeY - g_MapminY < 1) {
printf("Nothing to render: -min Y has to be < -max/-height Y\n");
return 1;
}
g_MapsizeY -= g_MapminY;
// Whole area to be rendered, in chunks
// If -mem is omitted or high enough, this won't be needed
g_TotalFromChunkX = g_FromChunkX;
g_TotalFromChunkZ = g_FromChunkZ;
g_TotalToChunkX = g_ToChunkX;
g_TotalToChunkZ = g_ToChunkZ;
// Don't allow ridiculously small values for big maps
if (memlimit && memlimit < 200000000 && memlimit < size_t(g_MapsizeX * g_MapsizeZ * 150000)) {
printf("Need at least %d MiB of RAM to render a map of that size.\n", int(float(g_MapsizeX) * g_MapsizeZ * .15f + 1));
return 1;
}
// Load biomes
if (g_UseBiomes) {
char *bpath = new char[strlen(filename) + 30];
strcpy(bpath, filename);
strcat(bpath, "/biomes");
if (!dirExists(bpath)) {
printf("Error loading biome information. '%s' does not exist.\n", bpath);
return 1;
}
if (biomepath == NULL) {
biomepath = bpath;
}
if (!loadBiomeColors(biomepath)) return 1;
biomepath = bpath;
}
// Mem check
int bitmapX, bitmapY;
uint64_t bitmapBytes = calcImageSize(g_ToChunkX - g_FromChunkX, g_ToChunkZ - g_FromChunkZ, g_MapsizeY, bitmapX, bitmapY, false);
// Cropping
int cropLeft = 0, cropRight = 0, cropTop = 0, cropBottom = 0;
if (wholeworld) {
calcBitmapOverdraw(cropLeft, cropRight, cropTop, cropBottom);
bitmapX -= (cropLeft + cropRight);
bitmapY -= (cropTop + cropBottom);
bitmapBytes = uint64_t(bitmapX) * BYTESPERPIXEL * uint64_t(bitmapY);
}
bool splitImage = false;
int numSplitsX = 0;
int numSplitsZ = 0;
if (memlimit && memlimit < bitmapBytes + calcTerrainSize(g_ToChunkX - g_FromChunkX, g_ToChunkZ - g_FromChunkZ)) {
// If we'd need more mem than allowed, we have to render groups of chunks...
if (memlimit < bitmapBytes + 220 * uint64_t(1024 * 1024)) {
// Warn about using incremental rendering if user didn't set limit manually
if (!memlimitSet && sizeof(size_t) > 4) {
printf(" ***** PLEASE NOTE *****\n"
"mcmap is using disk cached rendering as it has a default memory limit\n"
"of %d MiB. If you want to use more memory to render (=faster) use\n"
"the -mem switch followed by the amount of memory in MiB to use.\n"
"Start mcmap without any arguments to get more help.\n", int(memlimit / (1024 * 1024)));
} else {
printf("Choosing disk caching strategy...\n");
}
// ...or even use disk caching
splitImage = true;
}
// Split up map more and more, until the mem requirements are satisfied
for (numSplitsX = 1, numSplitsZ = 2;;) {
int subAreaX = ((g_TotalToChunkX - g_TotalFromChunkX) + (numSplitsX - 1)) / numSplitsX;
int subAreaZ = ((g_TotalToChunkZ - g_TotalFromChunkZ) + (numSplitsZ - 1)) / numSplitsZ;
int subBitmapX, subBitmapY;
if (splitImage && calcImageSize(subAreaX, subAreaZ, g_MapsizeY, subBitmapX, subBitmapY, true) + calcTerrainSize(subAreaX, subAreaZ) <= memlimit) {
break; // Found a suitable partitioning
} else if (!splitImage && bitmapBytes + calcTerrainSize(subAreaX, subAreaZ) <= memlimit) {
break; // Found a suitable partitioning
}
//
if (numSplitsZ > numSplitsX) {
++numSplitsX;
} else {
++numSplitsZ;
}
}
}
// Always same random seed, as this is only used for block noise, which should give the same result for the same input every time
srand(1337);
if (outfile == NULL) {
outfile = (char *) "output.png";
}
// open output file only if not doing the tiled output
FILE *fileHandle = NULL;
if (g_TilePath == NULL) {
fileHandle = fopen(outfile, (splitImage ? "w+b" : "wb"));
if (fileHandle == NULL) {
printf("Error opening '%s' for writing.\n", outfile);
return 1;
}
// This writes out the bitmap header and pre-allocates space if disk caching is used
if (!createImage(fileHandle, bitmapX, bitmapY, splitImage)) {
printf("Error allocating bitmap. Check if you have enough free disk space.\n");
return 1;
}
} else {
// This would mean tiled output
#ifdef _WIN32
mkdir(g_TilePath);
#else
mkdir(g_TilePath, 0755);
#endif
if (!dirExists(g_TilePath)) {
printf("Error: '%s' does not exist.\n", g_TilePath);
return 1;
}
createImageBuffer(bitmapX, bitmapY, splitImage);
}
// Now here's the loop rendering all the required parts of the image.
// All the vars previously used to define bounds will be set on each loop,
// to create something like a virtual window inside the map.
for (;;) {
int bitmapStartX = 3, bitmapStartY = 5;
if (numSplitsX) { // virtual window is set here
// Set current chunk bounds according to number of splits. returns true if everything has been rendered already
if (prepareNextArea(numSplitsX, numSplitsZ, bitmapStartX, bitmapStartY)) {
break;
}
// if image is split up, prepare memory block for next part
if (splitImage) {
bitmapStartX += 2;
const int sizex = (g_ToChunkX - g_FromChunkX) * CHUNKSIZE_X * 2 + (g_ToChunkZ - g_FromChunkZ) * CHUNKSIZE_Z * 2;
const int sizey = (int)g_MapsizeY * g_OffsetY + (g_ToChunkX - g_FromChunkX) * CHUNKSIZE_X + (g_ToChunkZ - g_FromChunkZ) * CHUNKSIZE_Z + 3;
if (sizex <= 0 || sizey <= 0) continue; // Don't know if this is right, might also be that the size calulation is plain wrong
int res = loadImagePart(bitmapStartX - cropLeft, bitmapStartY - cropTop, sizex, sizey);
if (res == -1) {
printf("Error loading partial image to render to.\n");
return 1;
} else if (res == 1) continue;
}
}
// More chunks are needed at the sides to get light and edge detection right at the edges
// This makes code below a bit messy, as most of the time the surrounding chunks are ignored
// By starting loops at CHUNKSIZE_X instead of 0.
++g_ToChunkX;
++g_ToChunkZ;
--g_FromChunkX;
--g_FromChunkZ;
// For rotation, X and Z have to be swapped (East and West)
if (g_Orientation == North || g_Orientation == South) {
g_MapsizeZ = (g_ToChunkZ - g_FromChunkZ) * CHUNKSIZE_Z;
g_MapsizeX = (g_ToChunkX - g_FromChunkX) * CHUNKSIZE_X;
} else {
g_MapsizeX = (g_ToChunkZ - g_FromChunkZ) * CHUNKSIZE_Z;
g_MapsizeZ = (g_ToChunkX - g_FromChunkX) * CHUNKSIZE_X;
}
// Load world or part of world
if (numSplitsX == 0 && wholeworld && !loadEntireTerrain()) {
printf("Error loading terrain from '%s'\n", filename);
return 1;
} else if (numSplitsX != 0 || !wholeworld) {
int numberOfChunks;
if (!loadTerrain(filename, numberOfChunks)) {
printf("Error loading terrain from '%s'\n", filename);
return 1;
}
if (splitImage && numberOfChunks == 0) {
printf("Section is empty, skipping...\n");
discardImagePart();
continue;
}
}
// Load biome data if requested
if (g_UseBiomes) {
loadBiomeMap(biomepath);
}
// If underground mode, remove blocks that don't seem to belong to caves
if (g_Underground) {
undergroundMode(false);
}
if (g_OffsetY == 2) {
optimizeTerrain2((numSplitsX == 0 ? cropLeft : 0), (numSplitsX == 0 ? cropRight : 0));
} else {
optimizeTerrain3();
}
if (infoFile != NULL) {
writeInfoFile(infoFile,
int((g_MapsizeZ - CHUNKSIZE_Z) * 2 -CHUNKSIZE_X * 2 + (bitmapStartX - cropLeft)),
int(g_MapsizeY * g_OffsetY - CHUNKSIZE_Z - CHUNKSIZE_X + (bitmapStartY - cropTop)) + 2);
infoFile = NULL;
}
// Finally, render terrain to file
printf("Drawing map...\n");
for (size_t x = CHUNKSIZE_X; x < g_MapsizeX - CHUNKSIZE_X; ++x) {
printProgress(x - CHUNKSIZE_X, g_MapsizeX);
for (size_t z = CHUNKSIZE_Z; z < g_MapsizeZ - CHUNKSIZE_Z; ++z) {
// Biome colors
if (g_BiomeMap != NULL) {
uint16_t &offset = BIOMEAT(x,z);
memcpy(colors[GRASS], g_Grasscolor + offset * g_GrasscolorDepth, 3);
memcpy(colors[LEAVES], g_Leafcolor + offset * g_FoliageDepth, 3);
memcpy(colors[TALL_GRASS], g_TallGrasscolor + offset * g_GrasscolorDepth, 3);
memcpy(colors[PUMPKIN_STEM], g_TallGrasscolor + offset * g_GrasscolorDepth, 3);
memcpy(colors[MELON_STEM], g_TallGrasscolor + offset * g_GrasscolorDepth, 3);
memcpy(colors[VINES], g_Grasscolor + offset * g_GrasscolorDepth, 3);
// Leaves: This is just an approximation to get different leaf colors at all
colors[PINELEAVES][PRED] = clamp(int32_t(colors[LEAVES][PRED]) - 17);
colors[PINELEAVES][PGREEN] = clamp(int32_t(colors[LEAVES][PGREEN]) - 12);
colors[PINELEAVES][PBLUE] = colors[LEAVES][PBLUE];
int32_t avg = GETBRIGHTNESS(colors[LEAVES]);
colors[BIRCHLEAVES][PRED] = clamp(int32_t(colors[LEAVES][PRED]) + (avg - int32_t(colors[LEAVES][PRED])) / 2 + 15);
colors[BIRCHLEAVES][PGREEN] = clamp(int32_t(colors[LEAVES][PGREEN]) + (avg - int32_t(colors[LEAVES][PGREEN])) / 2 + 16);
colors[BIRCHLEAVES][PBLUE] = clamp(int32_t(colors[LEAVES][PBLUE]) + (avg - int32_t(colors[LEAVES][PBLUE])) / 2 + 15);
}
//
const int bmpPosX = int((g_MapsizeZ - z - CHUNKSIZE_Z) * 2 + (x - CHUNKSIZE_X) * 2 + (splitImage ? -2 : bitmapStartX - cropLeft));
int bmpPosY = int(g_MapsizeY * g_OffsetY + z + x - CHUNKSIZE_Z - CHUNKSIZE_X + (splitImage ? 0 : bitmapStartY - cropTop)) + 2 - (HEIGHTAT(x, z) & 0xFF) * g_OffsetY;
const size_t max = (HEIGHTAT(x, z) & 0xFF00) >> 8;
for (size_t y = uint8_t(HEIGHTAT(x, z)); y < max; ++y) {
bmpPosY -= g_OffsetY;
uint8_t &c = BLOCKAT(x, y, z);
if (c == AIR) {
continue;
}
bool oceanWater = isOceanWater(x, y, z);
uint8_t topBlock;
if (y + 1 < g_MapsizeY) {
topBlock = BLOCKAT(x, y + 1, z);
} else {
topBlock = AIR;
}
if (oceanWater && g_Oceanmode) {
// ocean water = water block "ocluded" by other water block
continue;
}
//float col = float(y) * .78f - 91;
float brightnessAdjustment = (100.0f / (1.0f + exp(- (1.3f * float(y) / 16.0f) + 6.0f))) - 91; // thx Donkey Kong
if (g_BlendUnderground) {
brightnessAdjustment -= 168;
}
// we use light if...
if (g_Nightmode // nightmode is active, or
|| (g_Skylight // skylight is used and
&& (!BLOCK_AT_MAPEDGE(x, z)) // block is not edge of map (or if it is, has non-opaque block above)
)) {
int l = GETLIGHTAT(x, y, z); // find out how much light hits that block
if (l == 0 && y + 1 == g_MapsizeY) {
l = (g_Nightmode ? 3 : 15); // quickfix: assume maximum strength at highest level
}
bool blocked[4] = {false, false, false, false}; // if light is blocked in one direction
for (int i = 1; i < 3 && l <= 0; ++i) {
// Need to make this a loop to deal with half-steps, fences, flowers and other special blocks
blocked[0] |= (colors[BLOCKAT(x+i, y, z) ][PALPHA] == 255);
blocked[1] |= (colors[BLOCKAT(x, y, z+i) ][PALPHA] == 255);
blocked[2] |= (y + i >= g_MapsizeY || colors[BLOCKAT(x, y+i, z) ][PALPHA] == 255);
blocked[3] |= (colors[BLOCKAT(x+i, y+i, z+i) ][PALPHA] == 255);
if (l <= 0 // if block is still dark and there are no translucent blocks around, stop
&& blocked[0] && blocked[1] && blocked[2] && blocked[3]) {
break;
}
//
if (!blocked[2] && l <= 0 && y + i < g_MapsizeY) {
l = GETLIGHTAT(x, y + i, z);
}
if (!blocked[0] && l <= 0) {
l = GETLIGHTAT(x + i, y, z) - i / 2;
}
if (!blocked[1] && l <= 0) {
l = GETLIGHTAT(x, y, z + i) - i / 2;
}
if (!blocked[3] && l <= 0 && y + i < g_MapsizeY) {
l = (int)GETLIGHTAT(x + i - 1, y + i, z + i - 1) - i;
}
//if (!blocked[2] && l <= 0 && y+i < g_MapsizeY) l = GETLIGHTAT(x+i/2, y+i/2, z+i/2) - i/2;
}
if (l < 0) {
l = 0;
}
if ((topBlock == WATER || topBlock == STAT_WATER) &&
!g_Nightmode && g_Oceanmode) {
if (l < g_Oceanlevel) {
// Blocks under water are severly unlit otherwise
l = g_Oceanlevel;
}
}
if (!g_Skylight) { // Night
brightnessAdjustment -= (125 - l * 9);
} else { // Day
brightnessAdjustment -= (210 - l * 14);
}
}
// Edge detection (this means where terrain goes 'down' and the side of the block is not visible)
uint8_t &b = BLOCKAT(x - 1, y - 1, z - 1);
if ((y && y + 1 < g_MapsizeY) // In bounds?
&& BLOCKAT(x, y + 1, z) == AIR // Only if block above is air
&& BLOCKAT(x - 1, y + 1, z - 1) == AIR // and block above and behind is air
&& (b == AIR || b == c) // block behind (from pov) this one is same type or air
&& (BLOCKAT(x - 1, y, z) == AIR || BLOCKAT(x, y, z - 1) == AIR)) { // block TL/TR from this one is air = edge
brightnessAdjustment += 13;
}
setPixel(bmpPosX, bmpPosY, c, brightnessAdjustment);
}
}
}
printProgress(10, 10);
// Bitmap creation complete
// unless using....
// Underground overlay mode
if (g_BlendUnderground && !g_Underground) {
// Load map data again, since block culling removed most of the blocks
if (numSplitsX == 0 && wholeworld && !loadEntireTerrain()) {
printf("Error loading terrain from '%s'\n", filename);
return 1;
} else if (numSplitsX != 0 || !wholeworld) {
int i;
if (!loadTerrain(filename, i)) {
printf("Error loading terrain from '%s'\n", filename);
return 1;
}
}
undergroundMode(true);
if (g_OffsetY == 2) {
optimizeTerrain2((numSplitsX == 0 ? cropLeft : 0), (numSplitsX == 0 ? cropRight : 0));
} else {
optimizeTerrain3();
}
printf("Creating cave overlay...\n");
for (size_t x = CHUNKSIZE_X; x < g_MapsizeX - CHUNKSIZE_X; ++x) {
printProgress(x - CHUNKSIZE_X, g_MapsizeX);
for (size_t z = CHUNKSIZE_Z; z < g_MapsizeZ - CHUNKSIZE_Z; ++z) {
const size_t bmpPosX = (g_MapsizeZ - z - CHUNKSIZE_Z) * 2 + (x - CHUNKSIZE_X) * 2 + (splitImage ? -2 : bitmapStartX) - cropLeft;
size_t bmpPosY = g_MapsizeY * g_OffsetY + z + x - CHUNKSIZE_Z - CHUNKSIZE_X + (splitImage ? 0 : bitmapStartY) - cropTop;
for (size_t y = 0; y < MIN(g_MapsizeY, 64); ++y) {
uint8_t &c = BLOCKAT(x, y, z);
if (c != AIR) { // If block is not air (colors[c][3] != 0)
blendPixel(bmpPosX, bmpPosY, c, float(y + 30) * .0048f);
}
bmpPosY -= g_OffsetY;
}
}
}
printProgress(10, 10);
} // End blend-underground
// If disk caching is used, save part to disk
if (splitImage && !saveImagePart()) {
printf("Error saving partially rendered image.\n");
return 1;
}
// No incremental rendering at all, so quit the loop
if (numSplitsX == 0) {
break;
}
}
// Drawing complete, now either just save the image or compose it if disk caching was used
// Saving
if (!splitImage) {
saveImage();
} else {
if (!composeFinalImage()) {
printf("Aborted.\n");
return 1;
}
}
if (fileHandle != NULL) fclose(fileHandle);
printf("Job complete.\n");
return 0;
}
#ifdef _DEBUG
static size_t gBlocksRemoved = 0;
#endif
void optimizeTerrain2(int cropLeft, int cropRight)
{
printf("Optimizing terrain...\n");
#ifdef _DEBUG
gBlocksRemoved = 0;
#endif
const int maxX = g_MapsizeX - CHUNKSIZE_X;
const int maxZ = g_MapsizeZ - CHUNKSIZE_Z;
const int modZ = maxZ * g_MapsizeY;
uint8_t * const blocked = new uint8_t[modZ];
int offsetZ = 0, offsetY = 0, offsetGlobal = 0;
memset(blocked, 0, modZ);
for (int x = maxX - 1; x >= CHUNKSIZE_X; --x) {
printProgress(maxX - (x + 1), maxX);
offsetZ = offsetGlobal;
for (int z = CHUNKSIZE_Z; z < maxZ; ++z) {
const uint8_t *block = &BLOCKAT(x, 0, z); // Get the lowest block at that point
int highest = 0, lowest = 0xFF; // remember lowest and highest block which are visible to limit the Y-for-loop later
for (size_t y = 0; y < g_MapsizeY; ++y) { // Go up
uint8_t ¤t = blocked[((y+offsetY) % g_MapsizeY) + (offsetZ % modZ)];
if (current) { // Block is hidden, remove
#ifdef _DEBUG
if (*block != AIR) {
++gBlocksRemoved;
}
#endif
} else { // block is not hidden by another block
if (*block != AIR && lowest == 0xFF) { // if it's not air, this is the lowest block to draw
lowest = y;
}
if (colors[*block][PALPHA] == 255) { // Block is not hidden, do not remove, but mark spot as blocked for next iteration
current = 1;
}
if (*block != AIR) highest = y; // if it's not air, it's the new highest block encountered so far
}
++block; // Go up
}
HEIGHTAT(x, z) = (((uint16_t)highest + 1) << 8) | (uint16_t)lowest; // cram them both into a 16bit int
blocked[(offsetY % g_MapsizeY) + (offsetZ % modZ)] = 0;
offsetZ += g_MapsizeY;
}
for (size_t y = 0; y < g_MapsizeY; ++y) {
blocked[y + (offsetGlobal % modZ)] = 0;
}
offsetGlobal += g_MapsizeY;
++offsetY;
}
delete[] blocked;
printProgress(10, 10);
#ifdef _DEBUG
printf("Removed %lu blocks\n", (unsigned long) gBlocksRemoved);
#endif
}
void optimizeTerrain3()
{
// Remove invisible blocks from map (covered by other blocks from isometric pov)
// Do so by "raytracing" every block from front to back..
printf("Optimizing terrain...\n");
#ifdef _DEBUG
gBlocksRemoved = 0;
#endif
printProgress(0, 10);
const int top = (int)g_MapsizeY;
// Helper arrays to remember which block is blocked from being seen. This allows to traverse the array in a slightly more sequential way, which leads to better usage of the CPU cache
uint8_t blocked[CHUNKSIZE_Y*3];
const int max = (int)MIN(g_MapsizeX - CHUNKSIZE_X * 2, g_MapsizeZ - CHUNKSIZE_Z * 2);
const int maxX = int(g_MapsizeX - CHUNKSIZE_X - 1);
const int maxZ = int(g_MapsizeZ - CHUNKSIZE_Z - 1);
const size_t maxProgress = size_t(maxX + maxZ);
// The following needs to be done twice, once for the X-Y front plane, once for the Z-Y front plane
for (int x = CHUNKSIZE_X; x <= maxX; ++x) {
memset(blocked, 0, CHUNKSIZE_Y*3); // Nothing is blocked at first
int offset = 0; // The helper array had to be shifted after each run of the inner most loop. As this is expensive, just use an offset that increases instead
const int max2 = MIN(max, x - CHUNKSIZE_X + 1); // Block array will be traversed diagonally, determine how many blocks there are
for (int i = 0; i < max2; ++i) { // This traverses the block array diagonally, which would be upwards in the image
const int blockedOffset = CHUNKSIZE_Y * (i % 3);
uint8_t *block = &BLOCKAT(x - i, 0, maxZ - i); // Get the lowest block at that point
int highest = 0, lowest = 0xFF;
for (int j = 0; j < top; ++j) { // Go up
if (blocked[blockedOffset + (j+offset) % top]) { // Block is hidden, remove
#ifdef _DEBUG
if (*block != AIR) {
++gBlocksRemoved;
}
#endif
} else {
if (*block != AIR && lowest == 0xFF) {
lowest = j;
}
if (colors[*block][PALPHA] == 255) { // Block is not hidden, do not remove, but mark spot as blocked for next iteration
blocked[blockedOffset + (j+offset) % top] = 1;
}
if (*block != AIR) highest = j;
}
++block; // Go up
}
HEIGHTAT(x - i, maxZ - i) = (((uint16_t)highest + 1) << 8) | (uint16_t)lowest;
blocked[blockedOffset + ((offset + 1) % top)] = 0; // This will be the array index responsible for the top most block in the next itaration. Set it to 0 as it can't be hidden.
blocked[blockedOffset + (offset % top)] = 0;
if (i % 3 == 2) {
offset += 2; // Increase offset, as block at height n in current row will hide block at n-1 in next row
}
}
printProgress(size_t(x), maxProgress);
}
for (int z = CHUNKSIZE_Z; z < maxZ; ++z) {
memset(blocked, 0, CHUNKSIZE_Y*3);
int offset = 0;
const int max2 = MIN(max, z - CHUNKSIZE_Z + 1);
for (int i = 0; i < max2; ++i) {
const int blockedOffset = CHUNKSIZE_Y * (i % 3);
uint8_t *block = &BLOCKAT(maxX - i, 0, z - i);
int highest = 0, lowest = 0xFF;
for (int j = 0; j < top; ++j) {
if (blocked[blockedOffset + (j+offset) % top]) {
#ifdef _DEBUG
if (*block != AIR) {
++gBlocksRemoved;
}
#endif
} else {
if (*block != AIR && lowest == 0xFF) {
lowest = j;
}
if (colors[*block][PALPHA] == 255) {
blocked[blockedOffset + (j+offset) % top] = 1;
}
if (*block != AIR) highest = j;
}
++block;
}
HEIGHTAT(maxX - i, z - i) = (((uint16_t)highest + 1) << 8) | (uint16_t)lowest;
blocked[blockedOffset + ((offset + 1) % top)] = 0;
blocked[blockedOffset + (offset % top)] = 0;
if (i % 3 == 2) {
offset += 2;
}
}
printProgress(size_t(z + maxX), maxProgress);
}
printProgress(10, 10);
#ifdef _DEBUG
printf("Removed %lu blocks\n", (unsigned long) gBlocksRemoved);
#endif
}
void undergroundMode(bool explore)
{
// This wipes out all blocks that are not caves/tunnels
//int cnt[256];
//memset(cnt, 0, sizeof(cnt));
printf("Exploring underground...\n");
if (explore) {
clearLightmap();
for (size_t x = CHUNKSIZE_X; x < g_MapsizeX - CHUNKSIZE_X; ++x) {
printProgress(x - CHUNKSIZE_X, g_MapsizeX);
for (size_t z = CHUNKSIZE_Z; z < g_MapsizeZ - CHUNKSIZE_Z; ++z) {
for (size_t y = 0; y < MIN(g_MapsizeY, 64) - 1; y++) {
if (BLOCKAT(x, y, z) == TORCH) {
// Torch
BLOCKAT(x, y, z) = AIR;
for (int ty = int(y) - 9; ty < int(y) + 9; ty += 2) { // The trick here is to only take into account
if (ty < 0) {
continue; // areas around torches.
}
if (ty >= int(g_MapsizeY) - 1) {
break;
}
for (int tz = int(z) - 18; tz < int(z) + 18; ++tz) {
if (tz < CHUNKSIZE_Z) {
continue;
}
if (tz >= int(g_MapsizeZ) - CHUNKSIZE_Z) {
break;
}
for (int tx = int(x) - 18; tx < int(x) + 18; ++tx) {
if (tx < CHUNKSIZE_X) {
continue;
}
if (tx >= int(g_MapsizeX) - CHUNKSIZE_X) {
break;
}
SETLIGHTNORTH(tx, ty, tz) = 0xFF;
}
}
}
// /
}
}
}
}
}
for (size_t x = 0; x < g_MapsizeX; ++x) {
printProgress(x + g_MapsizeX * (explore ? 1 : 0), g_MapsizeX * (explore ? 2 : 1));
for (size_t z = 0; z < g_MapsizeZ; ++z) {
size_t ground = 0;
size_t cave = 0;
for (size_t y = g_MapsizeY - 1; y < g_MapsizeY; --y) {
uint8_t &c = BLOCKAT(x, y, z);
if (c != AIR && cave > 0) { // Found a cave, leave floor
if (c == GRASS || c == LEAVES || c == SNOW || GETLIGHTAT(x, y, z) == 0) {
c = AIR; // But never count snow or leaves
} //else cnt[*c]++;
if (c != WATER && c != STAT_WATER) {
--cave;
}
} else if (c != AIR) { // Block is not air, count up "ground"
c = AIR;
if (c != LOG && c != LEAVES && c != SNOW && c != WOOD && c != WATER && c != STAT_WATER) {
++ground;
}
} else if (ground < 3) { // Block is air, if there was not enough ground above, don't trat that as a cave
ground = 0;
} else { // Thats a cave, draw next two blocks below it
cave = 2;
}
}
}
}
printProgress(10, 10);
//for (int i = 0; i < 256; ++i) {
// if (cnt[i] == 0) continue;
// printf("Block %d: %d\n", i, cnt[i]);
//}
}
bool prepareNextArea(int splitX, int splitZ, int &bitmapStartX, int &bitmapStartY)
{
static int currentAreaX = -1;
static int currentAreaZ = 0;
// move on to next part and stop if we're done
++currentAreaX;
if (currentAreaX >= splitX) {
currentAreaX = 0;
++currentAreaZ;
}
if (currentAreaZ >= splitZ) {
return true;
}
// For bright map edges
if (g_Orientation == West || g_Orientation == East) {
gAtBottomRight = (currentAreaZ + 1 == splitZ);
gAtBottomLeft = (currentAreaX + 1 == splitX);
} else {
gAtBottomLeft = (currentAreaZ + 1 == splitZ);
gAtBottomRight = (currentAreaX + 1 == splitX);
}
// Calc size of area to be rendered (in chunks)
const int subAreaX = ((g_TotalToChunkX - g_TotalFromChunkX) + (splitX - 1)) / splitX;
const int subAreaZ = ((g_TotalToChunkZ - g_TotalFromChunkZ) + (splitZ - 1)) / splitZ;
// Adjust values for current frame. order depends on map orientation
g_FromChunkX = g_TotalFromChunkX + subAreaX * (g_Orientation == North || g_Orientation == West ? currentAreaX : splitX - (currentAreaX + 1));
g_FromChunkZ = g_TotalFromChunkZ + subAreaZ * (g_Orientation == North || g_Orientation == East ? currentAreaZ : splitZ - (currentAreaZ + 1));
g_ToChunkX = g_FromChunkX + subAreaX;
g_ToChunkZ = g_FromChunkZ + subAreaZ;
// Bounds checking
if (g_ToChunkX > g_TotalToChunkX) {
g_ToChunkX = g_TotalToChunkX;
}
if (g_ToChunkZ > g_TotalToChunkZ) {
g_ToChunkZ = g_TotalToChunkZ;
}
printf("Pass %d of %d...\n", int(currentAreaX + (currentAreaZ * splitX) + 1), int(splitX * splitZ));
// Calulate pixel offsets in bitmap. Forgot how this works right after writing it, really.
if (g_Orientation == North) {
bitmapStartX = (((g_TotalToChunkZ - g_TotalFromChunkZ) * CHUNKSIZE_Z) * 2 + 3) // Center of image..
- ((g_ToChunkZ - g_TotalFromChunkZ) * CHUNKSIZE_Z * 2) // increasing Z pos will move left in bitmap
+ ((g_FromChunkX - g_TotalFromChunkX) * CHUNKSIZE_X * 2); // increasing X pos will move right in bitmap
bitmapStartY = 5 + (g_FromChunkZ - g_TotalFromChunkZ) * CHUNKSIZE_Z + (g_FromChunkX - g_TotalFromChunkX) * CHUNKSIZE_X;
} else if (g_Orientation == South) {
const int tox = g_TotalToChunkX - g_FromChunkX + g_TotalFromChunkX;
const int toz = g_TotalToChunkZ - g_FromChunkZ + g_TotalFromChunkZ;
const int fromx = tox - (g_ToChunkX - g_FromChunkX);
const int fromz = toz - (g_ToChunkZ - g_FromChunkZ);
bitmapStartX = (((g_TotalToChunkZ - g_TotalFromChunkZ) * CHUNKSIZE_Z) * 2 + 3) // Center of image..
- ((toz - g_TotalFromChunkZ) * CHUNKSIZE_Z * 2) // increasing Z pos will move left in bitmap
+ ((fromx - g_TotalFromChunkX) * CHUNKSIZE_X * 2); // increasing X pos will move right in bitmap
bitmapStartY = 5 + (fromz - g_TotalFromChunkZ) * CHUNKSIZE_Z + (fromx - g_TotalFromChunkX) * CHUNKSIZE_X;
} else if (g_Orientation == East) {
const int tox = g_TotalToChunkX - g_FromChunkX + g_TotalFromChunkX;
const int fromx = tox - (g_ToChunkX - g_FromChunkX);
bitmapStartX = (((g_TotalToChunkX - g_TotalFromChunkX) * CHUNKSIZE_X) * 2 + 3) // Center of image..
- ((tox - g_TotalFromChunkX) * CHUNKSIZE_X * 2) // increasing Z pos will move left in bitmap
+ ((g_FromChunkZ - g_TotalFromChunkZ) * CHUNKSIZE_Z * 2); // increasing X pos will move right in bitmap
bitmapStartY = 5 + (fromx - g_TotalFromChunkX) * CHUNKSIZE_X + (g_FromChunkZ - g_TotalFromChunkZ) * CHUNKSIZE_Z;
} else {
const int toz = g_TotalToChunkZ - g_FromChunkZ + g_TotalFromChunkZ;
const int fromz = toz - (g_ToChunkZ - g_FromChunkZ);
bitmapStartX = (((g_TotalToChunkX - g_TotalFromChunkX) * CHUNKSIZE_X) * 2 + 3) // Center of image..
- ((g_ToChunkX - g_TotalFromChunkX) * CHUNKSIZE_X * 2) // increasing Z pos will move left in bitmap
+ ((fromz - g_TotalFromChunkZ) * CHUNKSIZE_Z * 2); // increasing X pos will move right in bitmap