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comparison libblastem.c @ 1924:81b059e3ded6

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Add memory hook for cheat/rumble/cheevos support
author negativeExponent <negativeExponent@users.noreply.github.com>
date Mon, 13 Apr 2020 18:14:25 -0700
parents 377f110e4cea
children 94f37e4b1469
comparison
equal deleted inserted replaced
1923:23394a890508 1924:81b059e3ded6
4 #include "system.h" 4 #include "system.h"
5 #include "util.h" 5 #include "util.h"
6 #include "vdp.h" 6 #include "vdp.h"
7 #include "render.h" 7 #include "render.h"
8 #include "io.h" 8 #include "io.h"
9 #include "genesis.h"
10 #include "sms.h"
9 11
10 static retro_environment_t retro_environment; 12 static retro_environment_t retro_environment;
11 RETRO_API void retro_set_environment(retro_environment_t re) 13 RETRO_API void retro_set_environment(retro_environment_t re)
12 { 14 {
13 retro_environment = re; 15 retro_environment = re;
216 RETRO_API void retro_cheat_set(unsigned index, bool enabled, const char *code) 218 RETRO_API void retro_cheat_set(unsigned index, bool enabled, const char *code)
217 { 219 {
218 } 220 }
219 221
220 /* Loads a game. */ 222 /* Loads a game. */
223 static system_type stype;
221 RETRO_API bool retro_load_game(const struct retro_game_info *game) 224 RETRO_API bool retro_load_game(const struct retro_game_info *game)
222 { 225 {
223 serialize_size_cache = 0; 226 serialize_size_cache = 0;
224 if (game->path) { 227 if (game->path) {
225 media.dir = path_dirname(game->path); 228 media.dir = path_dirname(game->path);
227 media.extension = path_extension(game->path); 230 media.extension = path_extension(game->path);
228 } 231 }
229 media.buffer = malloc(nearest_pow2(game->size)); 232 media.buffer = malloc(nearest_pow2(game->size));
230 memcpy(media.buffer, game->data, game->size); 233 memcpy(media.buffer, game->data, game->size);
231 media.size = game->size; 234 media.size = game->size;
232 current_system = alloc_config_system(detect_system_type(&media), &media, 0, 0); 235 stype = detect_system_type(&media);
236 current_system = alloc_config_system(stype, &media, 0, 0);
233 237
234 unsigned format = RETRO_PIXEL_FORMAT_XRGB8888; 238 unsigned format = RETRO_PIXEL_FORMAT_XRGB8888;
235 retro_environment(RETRO_ENVIRONMENT_SET_PIXEL_FORMAT, &format); 239 retro_environment(RETRO_ENVIRONMENT_SET_PIXEL_FORMAT, &format);
236 return current_system != NULL; 240 return current_system != NULL;
237 } 241 }
263 } 267 }
264 268
265 /* Gets region of memory. */ 269 /* Gets region of memory. */
266 RETRO_API void *retro_get_memory_data(unsigned id) 270 RETRO_API void *retro_get_memory_data(unsigned id)
267 { 271 {
272 if (id == RETRO_MEMORY_SYSTEM_RAM)
273 {
274 switch (stype)
275 {
276 case SYSTEM_GENESIS:
277 {
278 genesis_context *gen = (genesis_context *)current_system;
279 return (uint8_t *)gen->work_ram;
280 }
281 break;
282 #ifndef NO_Z80
283 case SYSTEM_SMS:
284 {
285 sms_context *sms = (sms_context *)current_system;
286 return sms->ram;
287 }
288 break;
289 #endif
290 }
291 }
268 return NULL; 292 return NULL;
269 } 293 }
270 294
271 RETRO_API size_t retro_get_memory_size(unsigned id) 295 RETRO_API size_t retro_get_memory_size(unsigned id)
272 { 296 {
297 if (id == RETRO_MEMORY_SYSTEM_RAM)
298 {
299 switch (stype)
300 {
301 case SYSTEM_GENESIS:
302 return RAM_WORDS * sizeof(uint16_t);
303 #ifndef NO_Z80
304 case SYSTEM_SMS:
305 return SMS_RAM_SIZE;
306 #endif
307 }
308 }
273 return 0; 309 return 0;
274 } 310 }
275 311
276 //blastem render backend API implementation 312 //blastem render backend API implementation
277 uint32_t render_map_color(uint8_t r, uint8_t g, uint8_t b) 313 uint32_t render_map_color(uint8_t r, uint8_t g, uint8_t b)