diff options
| -rw-r--r-- | tools/pokemon_animation_graphics.c | 69 |
1 files changed, 47 insertions, 22 deletions
diff --git a/tools/pokemon_animation_graphics.c b/tools/pokemon_animation_graphics.c index 089928d11..96d5242aa 100644 --- a/tools/pokemon_animation_graphics.c +++ b/tools/pokemon_animation_graphics.c @@ -48,15 +48,25 @@ int get_tile_index(uint8_t* tile, uint8_t* tiles, int num_tiles) { return -1; } +FILE *fopen_verbose(char *filename, char *mode) { + FILE *f = fopen(filename, mode); + if (!f) { + fprintf(stderr, "Could not open file: \"%s\"\n", filename); + } + return f; +} + void create_tilemap(struct Tilemap* tilemap, struct Graphic* graphic, char* graphics_filename, int width, int height) { long graphics_size; uint8_t* graphics; FILE* f; - int tile; - int num_tiles; int i; + int tile; - f = fopen(graphics_filename, "rb"); + f = fopen_verbose(graphics_filename, "rb"); + if (!f) { + exit(1); + } fseek(f, 0, SEEK_END); graphics_size = ftell(f); rewind(f); @@ -64,20 +74,27 @@ void create_tilemap(struct Tilemap* tilemap, struct Graphic* graphic, char* grap fread(graphics, 1, graphics_size, f); fclose(f); + int num_tiles_per_frame = width * height; + int tile_size = 16; + int num_frames = graphics_size / (tile_size * num_tiles_per_frame); + int frame_size = num_tiles_per_frame * tile_size; + // transpose each frame - for (i = 0; i < graphics_size / (width * height); i++) { - transpose_tiles(graphics + i * (width * height) * 16, width, width * height * 16, 16); + for (i = 0; i < num_frames; i++) { + transpose_tiles(graphics + i * frame_size, width, frame_size, tile_size); } - // first frame is naively populated with redundant tiles - num_tiles = width * height; - tilemap->data = malloc(graphics_size / 16); + // first frame is naively populated with redundant tiles, + // so fill it unconditionally and start from the second frame + int num_tiles = width * height; + int tilemap_size = graphics_size / tile_size; + tilemap->data = malloc(tilemap_size); for (i = 0; i < num_tiles; i++) { tilemap->data[tilemap->size] = i; tilemap->size++; } - for (i = width * height; i < graphics_size / 16; i++) { - tile = get_tile_index(graphics + i * 16, graphics, i); + for (i = num_tiles; i < tilemap_size; i++) { + tile = get_tile_index(graphics + i * tile_size, graphics, i); if (tile == -1) { tilemap->data[tilemap->size] = num_tiles; tilemap->size++; @@ -103,7 +120,7 @@ void create_tilemap(struct Tilemap* tilemap, struct Graphic* graphic, char* grap } int main(int argc, char* argv[]) { - int ch; + int opt; char* dimensions_filename; char* graphics_filename; char* outfile; @@ -116,8 +133,8 @@ int main(int argc, char* argv[]) { struct Graphic graphic = {0}; struct Tilemap tilemap = {0}; - while ((ch = getopt(argc, argv, "o:t:")) != -1) { - switch (ch) { + while ((opt = getopt(argc, argv, "o:t:")) != -1) { + switch (opt) { case 'o': outfile = optarg; break; @@ -126,6 +143,7 @@ int main(int argc, char* argv[]) { break; default: usage(); + break; } } argc -= optind; @@ -138,7 +156,10 @@ int main(int argc, char* argv[]) { graphics_filename = argv[0]; dimensions_filename = argv[1]; - f = fopen(dimensions_filename, "rb"); + f = fopen_verbose(dimensions_filename, "rb"); + if (!f) { + exit(1); + } fread(bytes, 1, 1, f); fclose(f); width = bytes[0] & 0xf; @@ -146,16 +167,20 @@ int main(int argc, char* argv[]) { create_tilemap(&tilemap, &graphic, graphics_filename, width, height); - if (outfile != NULL) { - f = fopen(outfile, "wb"); - fwrite(graphic.data, 1, graphic.size, f); - fclose(f); + if (outfile) { + f = fopen_verbose(outfile, "wb"); + if (f) { + fwrite(graphic.data, 1, graphic.size, f); + fclose(f); + } } - if (mapfile != NULL) { - f = fopen(mapfile, "wb"); - fwrite(tilemap.data, 1, tilemap.size, f); - fclose(f); + if (mapfile) { + f = fopen_verbose(mapfile, "wb"); + if (f) { + fwrite(tilemap.data, 1, tilemap.size, f); + fclose(f); + } } free(graphic.data); |