diff options
Diffstat (limited to 'trunk/example.c')
| -rw-r--r-- | trunk/example.c | 173 |
1 files changed, 89 insertions, 84 deletions
diff --git a/trunk/example.c b/trunk/example.c index 5de3139..25fff0a 100644 --- a/trunk/example.c +++ b/trunk/example.c @@ -4,93 +4,16 @@ #include "librosprite.h" -/* color is 0xrrggbbaa */ -void sdl_draw_pixel(SDL_Surface* surface, uint32_t x, uint32_t y, uint32_t color) -{ - uint32_t* pixel = ((uint32_t*) (surface->pixels)) + (y * surface->pitch/4) + x; - /* pretty sure SDL can do this, but can't figure out how */ - uint32_t bg_color = ((int) (x / 4.0) + ((int)(y / 4.0) % 2)) % 2 ? 0x99 : 0x66; - - uint32_t alpha = color & 0x000000ff; - uint32_t r = (color & 0xff000000) >> 24; - uint32_t g = (color & 0x00ff0000) >> 16; - uint32_t b = (color & 0x0000ff00) >> 8; - r = ((alpha / 255.0) * r) + (((255-alpha) / 255.0) * bg_color); - g = ((alpha / 255.0) * g) + (((255-alpha) / 255.0) * bg_color); - b = ((alpha / 255.0) * b) + (((255-alpha) / 255.0) * bg_color); - uint32_t mapped_color = SDL_MapRGB(surface->format, r, g, b); - - *pixel = mapped_color; -} - -void sdl_blank(SDL_Surface* surface) -{ - for (uint32_t y = 0; y < (uint32_t) surface->h; y++) { - for (uint32_t x = 0; x < (uint32_t) surface->w; x++) { - sdl_draw_pixel(surface, x, y, (uint32_t) ((int) (x / 4.0) + ((int)(y / 4.0) % 2)) % 2 ? 0x999999ff : 0x666666ff); - } - } -} - -int load_file_to_memory(const char *filename, uint8_t **result) -{ - int size = 0; - FILE *f = fopen(filename, "rb"); - if (f == NULL) - { - *result = NULL; - return -1; // -1 means file opening fail - } - fseek(f, 0, SEEK_END); - size = ftell(f); - fseek(f, 0, SEEK_SET); - *result = (uint8_t *)malloc(size+1); - if ((unsigned int) size != fread(*result, sizeof(char), size, f)) - { - free(*result); - return -2; // -2 means file reading fail - } - fclose(f); - (*result)[size] = 0; - return size; -} - -int create_file_context(char* filename, void** result) -{ - FILE *f = fopen(filename, "rb"); - if (!f) { - *result = NULL; - return -1; - } - - struct rosprite_file_context* ctx; - if (rosprite_create_file_context(f, &ctx) != ROSPRITE_OK) { - return -1; - } - *result = ctx; - - return 0; -} - -int create_mem_context(char* filename, void** result) -{ - uint8_t* content; - - int size = load_file_to_memory(filename, &content); - if (size < 0) return -1; - struct rosprite_mem_context* ctx; - if (rosprite_create_mem_context(content, size, &ctx) != ROSPRITE_OK) { - return -1; - } - *result = ctx; - - return 0; -} +void sdl_draw_pixel(SDL_Surface* surface, uint32_t x, uint32_t y, uint32_t color); +void sdl_blank(SDL_Surface* surface); +int load_file_to_memory(const char *filename, uint8_t **result); +int create_file_context(char* filename, void** result); +int create_mem_context(char* filename, void** result); int main(int argc, char *argv[]) { if (argc < 2) { - printf("Usage: example spritefile\n"); + fprintf(stderr, "Usage: example spritefile\n"); exit(EXIT_FAILURE); } @@ -106,7 +29,8 @@ int main(int argc, char *argv[]) printf("Loading %s\n", filename); struct rosprite_area* sprite_area; - if (!rosprite_load(rosprite_file_reader, ctx, &sprite_area)) { + if (rosprite_load(rosprite_file_reader, ctx, &sprite_area) != ROSPRITE_OK) { + fprintf(stderr, "Error loading spritefile\n"); exit(EXIT_FAILURE); }; printf("sprite_count %u\n", sprite_area->sprite_count); @@ -151,4 +75,85 @@ int main(int argc, char *argv[]) return EXIT_SUCCESS; } +int create_file_context(char* filename, void** result) +{ + FILE *f = fopen(filename, "rb"); + if (!f) { + *result = NULL; + return -1; + } + struct rosprite_file_context* ctx; + if (rosprite_create_file_context(f, &ctx) != ROSPRITE_OK) { + return -1; + } + *result = ctx; + + return 0; +} + +int create_mem_context(char* filename, void** result) +{ + uint8_t* content; + + int size = load_file_to_memory(filename, &content); + if (size < 0) return -1; + struct rosprite_mem_context* ctx; + if (rosprite_create_mem_context(content, size, &ctx) != ROSPRITE_OK) { + return -1; + } + *result = ctx; + + return 0; +} + +int load_file_to_memory(const char *filename, uint8_t **result) +{ + int size = 0; + FILE *f = fopen(filename, "rb"); + if (f == NULL) + { + *result = NULL; + return -1; // -1 means file opening fail + } + fseek(f, 0, SEEK_END); + size = ftell(f); + fseek(f, 0, SEEK_SET); + *result = (uint8_t *)malloc(size+1); + if ((unsigned int) size != fread(*result, sizeof(char), size, f)) + { + free(*result); + return -2; // -2 means file reading fail + } + fclose(f); + (*result)[size] = 0; + return size; +} + +/* color is 0xrrggbbaa */ +void sdl_draw_pixel(SDL_Surface* surface, uint32_t x, uint32_t y, uint32_t color) +{ + uint32_t* pixel = ((uint32_t*) (surface->pixels)) + (y * surface->pitch/4) + x; + /* pretty sure SDL can do this, but can't figure out how */ + uint32_t bg_color = ((int) (x / 4.0) + ((int)(y / 4.0) % 2)) % 2 ? 0x99 : 0x66; + + uint32_t alpha = color & 0x000000ff; + uint32_t r = (color & 0xff000000) >> 24; + uint32_t g = (color & 0x00ff0000) >> 16; + uint32_t b = (color & 0x0000ff00) >> 8; + r = ((alpha / 255.0) * r) + (((255-alpha) / 255.0) * bg_color); + g = ((alpha / 255.0) * g) + (((255-alpha) / 255.0) * bg_color); + b = ((alpha / 255.0) * b) + (((255-alpha) / 255.0) * bg_color); + uint32_t mapped_color = SDL_MapRGB(surface->format, r, g, b); + + *pixel = mapped_color; +} + +void sdl_blank(SDL_Surface* surface) +{ + for (uint32_t y = 0; y < (uint32_t) surface->h; y++) { + for (uint32_t x = 0; x < (uint32_t) surface->w; x++) { + sdl_draw_pixel(surface, x, y, (uint32_t) ((int) (x / 4.0) + ((int)(y / 4.0) % 2)) % 2 ? 0x999999ff : 0x666666ff); + } + } +} |