bool loadColorsFromFile(const char *file)
{
FILE *f = fopen(file, "r");
if (f == NULL) {
return false;
}
while (!feof(f)) {
char buffer[500];
if (fgets(buffer, 500, f) == NULL) {
break;
}
char *ptr = buffer;
while (*ptr == ' ' || *ptr == '\t') {
++ptr;
}
if (*ptr == '\0' || *ptr == '#') {
continue; // This is a comment or empty line, skip
}
int blockid = atoi(ptr);
if (blockid < 1 || blockid > 255) {
printf("Skipping invalid blockid %d in colors file\n", blockid);
continue;
}
while (*ptr != ' ' && *ptr != '\t' && *ptr != '\0') {
++ptr;
}
uint8_t vals[5];
bool valid = true;
for (int i = 0; i < 5; ++i) {
while (*ptr == ' ' || *ptr == '\t') {
++ptr;
}
if (*ptr == '\0') {
printf("Too few arguments for block %d, ignoring line.\n", blockid);
valid = false;
break;
}
vals[i] = clamp(atoi(ptr));
while (*ptr != ' ' && *ptr != '\t' && *ptr != '\0') {
++ptr;
}
}
if (!valid) {
continue;
}
memcpy(colors[blockid], vals, 5);
colors[blockid][BRIGHTNESS] = GETBRIGHTNESS(colors[blockid]);
}
fclose(f);
return true;
}
/**
* This loads grasscolor.png and foliagecolor.png where the
* biome colors will be read from upon rendering
*/
bool loadBiomeColors(const char* path)
{
size_t len = strlen(path) + 21;
char *grass = new char[len], *foliage = new char[len];
snprintf(grass, len + 20, "%s/grasscolor.png", path);
snprintf(foliage, len + 20, "%s/foliagecolor.png", path);
pngGrass = new PngReader(grass);
pngLeaf = new PngReader(foliage);
if (!pngGrass->isValidImage() || !pngLeaf->isValidImage()) {
delete pngGrass;
delete pngLeaf;
printf("Could not load %s and %s: no valid PNG files. Biomes disabled.\n", grass, foliage);
return false;
}
if ((pngGrass->getColorType() != PngReader::RGBA && pngGrass->getColorType() != PngReader::RGB) || pngGrass->getBitsPerChannel() != 8
|| (pngLeaf->getColorType() != PngReader::RGBA && pngLeaf->getColorType() != PngReader::RGB) || pngLeaf->getBitsPerChannel() != 8
|| pngGrass->getWidth() != 256 || pngGrass->getHeight() != 256 || pngLeaf->getWidth() != 256 || pngLeaf->getHeight() != 256) {
delete pngGrass;
delete pngLeaf;
printf("Could not load %s and %s; Expecting RGB(A), 8 bits per channel.\n", grass, foliage);
return false;
}
g_GrasscolorDepth = pngGrass->getBytesPerPixel();
g_FoliageDepth = pngLeaf->getBytesPerPixel();
g_Grasscolor = pngGrass->getImageData();
g_TallGrasscolor = new uint8_t[pngGrass->getBytesPerPixel() * 256 * 256];
g_Leafcolor = pngLeaf->getImageData();
// Adjust brightness to what colors.txt says
const int maxG = pngGrass->getWidth() * pngGrass->getHeight() * g_GrasscolorDepth;
for (int i = 0; i < maxG; ++i) {
g_TallGrasscolor[i] = ((int)g_Grasscolor[i] * (int)colors[TALL_GRASS][BRIGHTNESS]) / 255;
g_Grasscolor[i] = ((int)g_Grasscolor[i] * (int)colors[GRASS][BRIGHTNESS]) / 255;
}
const int maxT = pngLeaf->getWidth() * pngLeaf->getHeight() * g_FoliageDepth;
for (int i = 0; i < maxT; ++i) {
g_Leafcolor[i] = ((int)g_Leafcolor[i] * (int)colors[LEAVES][BRIGHTNESS]) / 255;
}
// Now re-calc brightness of those two
colors[GRASS][BRIGHTNESS] = GETBRIGHTNESS(g_Grasscolor) - 5;
colors[LEAVES][BRIGHTNESS] = colors[PINELEAVES][BRIGHTNESS] = colors[BIRCHLEAVES][BRIGHTNESS] = GETBRIGHTNESS(g_Leafcolor) - 5;
printf("Loaded biome color maps from %s\n", path);
return true;
}
bool loadColorsFromFile(const char* file)
{
FILE *f = fopen(file, "r");
if (f == NULL) return false;
while (!feof(f)) {
char buffer[500];
if (fgets(buffer, 500, f) == NULL) break;
char *ptr = buffer;
while (*ptr == ' ' || *ptr == '\t') ++ptr;
if (*ptr == '\0' || *ptr == '#') continue; // This is a comment or empty line, skip
int blockid = atoi(ptr);
if (blockid < 1 || blockid > 255) {
printf("Skipping invalid blockid %d in colors file\n", blockid);
continue;
}
while (*ptr != ' ' && *ptr != '\t' && *ptr != '\0') ++ptr;
uint8_t vals[5];
bool valid = true;
for (int i = 0; i < 5; ++i) {
while (*ptr == ' ' || *ptr == '\t') ++ptr;
if (*ptr == '\0') {
printf("Too few arguments for block %d, ignoring line.\n", blockid);
valid = false;
break;
}
if (i == 0) vals[RED] = uint8_t(atoi(ptr));
else if (i == 2) vals[BLUE] = uint8_t(atoi(ptr));
else vals[i] = uint8_t(atoi(ptr));
while (*ptr != ' ' && *ptr != '\t' && *ptr != '\0') ++ptr;
}
if (!valid) continue;
memcpy(colors[blockid], vals, 5);
colors[blockid][PRED] = colors[blockid][RED];
colors[blockid][PGREEN] = colors[blockid][GREEN];
colors[blockid][PBLUE] = colors[blockid][BLUE];
colors[blockid][PALPHA] = colors[blockid][ALPHA];
colors[blockid][BRIGHTNESS] = GETBRIGHTNESS(colors[blockid]);
}
fclose(f);
return true;
}