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/* (c) Magnus Auvinen. See licence.txt in the root of the distribution for more information. */
/* If you are missing that file, acquire a complete release at teeworlds.com. */
#include <base/math.h>
#include <base/system.h>
#include <engine/external/pnglite/pnglite.h>
typedef struct
{
unsigned char r, g, b, a;
} CPixel;
static void TilesetBorderfix(int w, int h, CPixel *pSrc, CPixel *pDest)
{
int TileW = w/16;
int TileH = h/16;
for(int tx = 0; tx < 16; tx++)
{
for(int ty = 0; ty < 16; ty++)
{
for(int x = 0; x < TileW; x++)
{
for(int y = 0; y < TileH; y++)
{
#define TILE_INDEX(tx, ty, x, y) (((ty) * TileH + (y)) * w + (tx) * TileW + (x))
pDest[TILE_INDEX(tx, ty, x, y)] = pSrc[TILE_INDEX(tx, ty, clamp(x, 2, 13), clamp(y, 2, 13))];
}
}
}
}
}
int FixFile(const char *pFileName)
{
png_t Png;
CPixel *pBuffer[2] = {0,0};
png_init(0, 0);
png_open_file(&Png, pFileName);
if(Png.color_type != PNG_TRUECOLOR_ALPHA)
{
dbg_msg("tileset_borderfix", "%s: not an RGBA image", pFileName);
return 1;
}
int w = Png.width;
int h = Png.height;
pBuffer[0] = (CPixel*)mem_alloc(w*h*sizeof(CPixel), 1);
pBuffer[1] = (CPixel*)mem_alloc(w*h*sizeof(CPixel), 1);
png_get_data(&Png, (unsigned char *)pBuffer[0]);
png_close_file(&Png);
TilesetBorderfix(w, h, pBuffer[0], pBuffer[1]);
// save here
png_open_file_write(&Png, pFileName);
png_set_data(&Png, w, h, 8, PNG_TRUECOLOR_ALPHA, (unsigned char *)pBuffer[1]);
png_close_file(&Png);
return 0;
}
int main(int argc, const char **argv)
{
dbg_logger_stdout();
if(argc == 1)
{
dbg_msg("Usage", "%s FILE1 [ FILE2... ]", argv[0]);
return -1;
}
for(int i = 1; i < argc; i++)
FixFile(argv[i]);
return 0;
}
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