void retro_reset(void) {
ARMReset(&cpu);
if (rumbleCallback) {
CircleBufferClear(&rumbleHistory);
}
}
void retro_run(void) {
uint16_t keys;
inputPollCallback();
struct retro_variable var = {
.key = "mgba_allow_opposing_directions",
.value = 0
};
bool updated = false;
if (environCallback(RETRO_ENVIRONMENT_GET_VARIABLE_UPDATE, &updated) && updated) {
if (environCallback(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
((struct GBA*) core->board)->allowOpposingDirections = strcmp(var.value, "yes") == 0;
}
}
keys = 0;
keys |= (!!inputCallback(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A)) << 0;
keys |= (!!inputCallback(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B)) << 1;
keys |= (!!inputCallback(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT)) << 2;
keys |= (!!inputCallback(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START)) << 3;
keys |= (!!inputCallback(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT)) << 4;
keys |= (!!inputCallback(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT)) << 5;
keys |= (!!inputCallback(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP)) << 6;
keys |= (!!inputCallback(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN)) << 7;
keys |= (!!inputCallback(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R)) << 8;
keys |= (!!inputCallback(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L)) << 9;
core->setKeys(core, keys);
static bool wasAdjustingLux = false;
if (wasAdjustingLux) {
wasAdjustingLux = inputCallback(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R3) ||
inputCallback(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L3);
} else {
if (inputCallback(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R3)) {
++luxLevel;
if (luxLevel > 10) {
luxLevel = 10;
}
wasAdjustingLux = true;
} else if (inputCallback(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L3)) {
--luxLevel;
if (luxLevel < 0) {
luxLevel = 0;
}
wasAdjustingLux = true;
}
}
core->runFrame(core);
unsigned width, height;
core->desiredVideoDimensions(core, &width, &height);
videoCallback(outputBuffer, width, height, BYTES_PER_PIXEL * 256);
}
void retro_reset(void) {
core->reset(core);
if (rumbleCallback) {
CircleBufferClear(&rumbleHistory);
}
}
void retro_run(void) {
uint16_t keys;
inputPollCallback();
bool updated = false;
if (environCallback(RETRO_ENVIRONMENT_GET_VARIABLE_UPDATE, &updated) && updated) {
struct retro_variable var = {
.key = "mgba_allow_opposing_directions",
.value = 0
};
if (environCallback(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
((struct GBA*) core->board)->allowOpposingDirections = strcmp(var.value, "yes") == 0;
}
var.key = "mgba_frameskip";
var.value = 0;
if (environCallback(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
mCoreConfigSetUIntValue(&core->config, "frameskip", strtol(var.value, NULL, 10));
mCoreLoadConfig(core);
}
}
keys = 0;
keys |= (!!inputCallback(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A)) << 0;
keys |= (!!inputCallback(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B)) << 1;
keys |= (!!inputCallback(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT)) << 2;
keys |= (!!inputCallback(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START)) << 3;
keys |= (!!inputCallback(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT)) << 4;
keys |= (!!inputCallback(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT)) << 5;
keys |= (!!inputCallback(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP)) << 6;
keys |= (!!inputCallback(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN)) << 7;
keys |= (!!inputCallback(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R)) << 8;
keys |= (!!inputCallback(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L)) << 9;
core->setKeys(core, keys);
static bool wasAdjustingLux = false;
if (wasAdjustingLux) {
wasAdjustingLux = inputCallback(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R3) ||
inputCallback(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L3);
} else {
if (inputCallback(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R3)) {
++luxLevel;
if (luxLevel > 10) {
luxLevel = 10;
}
wasAdjustingLux = true;
} else if (inputCallback(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L3)) {
--luxLevel;
if (luxLevel < 0) {
luxLevel = 0;
}
wasAdjustingLux = true;
}
}
core->runFrame(core);
unsigned width, height;
core->desiredVideoDimensions(core, &width, &height);
videoCallback(outputBuffer, width, height, BYTES_PER_PIXEL * 256);
}
static void _setupMaps(struct mCore* core) {
#ifdef M_CORE_GBA
if (core->platform(core) == PLATFORM_GBA) {
struct GBA* gba = core->board;
struct retro_memory_descriptor descs[11];
struct retro_memory_map mmaps;
size_t romSize = gba->memory.romSize + (gba->memory.romSize & 1);
memset(descs, 0, sizeof(descs));
size_t savedataSize = retro_get_memory_size(RETRO_MEMORY_SAVE_RAM);
/* Map internal working RAM */
descs[0].ptr = gba->memory.iwram;
descs[0].start = BASE_WORKING_IRAM;
descs[0].len = SIZE_WORKING_IRAM;
descs[0].select = 0xFF000000;
/* Map working RAM */
descs[1].ptr = gba->memory.wram;
descs[1].start = BASE_WORKING_RAM;
descs[1].len = SIZE_WORKING_RAM;
descs[1].select = 0xFF000000;
/* Map save RAM */
/* TODO: if SRAM is flash, use start=0 addrspace="S" instead */
descs[2].ptr = savedataSize ? savedata : NULL;
descs[2].start = BASE_CART_SRAM;
descs[2].len = savedataSize;
/* Map ROM */
descs[3].ptr = gba->memory.rom;
descs[3].start = BASE_CART0;
descs[3].len = romSize;
descs[3].flags = RETRO_MEMDESC_CONST;
descs[4].ptr = gba->memory.rom;
descs[4].start = BASE_CART1;
descs[4].len = romSize;
descs[4].flags = RETRO_MEMDESC_CONST;
descs[5].ptr = gba->memory.rom;
descs[5].start = BASE_CART2;
descs[5].len = romSize;
descs[5].flags = RETRO_MEMDESC_CONST;
/* Map BIOS */
descs[6].ptr = gba->memory.bios;
descs[6].start = BASE_BIOS;
descs[6].len = SIZE_BIOS;
descs[6].flags = RETRO_MEMDESC_CONST;
/* Map VRAM */
descs[7].ptr = gba->video.vram;
descs[7].start = BASE_VRAM;
descs[7].len = SIZE_VRAM;
descs[7].select = 0xFF000000;
/* Map palette RAM */
descs[8].ptr = gba->video.palette;
descs[8].start = BASE_PALETTE_RAM;
descs[8].len = SIZE_PALETTE_RAM;
descs[8].select = 0xFF000000;
/* Map OAM */
descs[9].ptr = &gba->video.oam; /* video.oam is a structure */
descs[9].start = BASE_OAM;
descs[9].len = SIZE_OAM;
descs[9].select = 0xFF000000;
/* Map mmapped I/O */
descs[10].ptr = gba->memory.io;
descs[10].start = BASE_IO;
descs[10].len = SIZE_IO;
mmaps.descriptors = descs;
mmaps.num_descriptors = sizeof(descs) / sizeof(descs[0]);
bool yes = true;
environCallback(RETRO_ENVIRONMENT_SET_MEMORY_MAPS, &mmaps);
environCallback(RETRO_ENVIRONMENT_SET_SUPPORT_ACHIEVEMENTS, &yes);
}
#endif
}
void retro_reset(void) {
core->reset(core);
_setupMaps(core);
if (rumbleCallback) {
CircleBufferClear(&rumbleHistory);
}
}
