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GB Cheats: Add Codebreaker format recognition

This commit is contained in:
Jeffrey Pfau 2016-05-08 18:14:10 -07:00
parent 0e85739cd3
commit 8768bc21a2
1 changed files with 19 additions and 8 deletions
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27
src/gb/cheats.c
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@ -54,17 +54,21 @@ static void GBCheatRemoveSet(struct mCheatSet* cheats, struct mCheatDevice* devi
UNUSED(device);
}
static bool GBCheatAddGameShark(struct GBCheatSet* cheats, uint32_t op) {
static bool GBCheatAddCodebreaker(struct GBCheatSet* cheats, uint16_t address, uint8_t data) {
struct mCheat* cheat = mCheatListAppend(&cheats->d.list);
cheat->type = CHEAT_ASSIGN;
cheat->width = 1;
cheat->address = ((op & 0xFF) << 8) | ((op >> 8) & 0xFF);
cheat->operand = (op >> 16) & 0xFF;
cheat->address = address;
cheat->operand = data;
cheat->repeat = 1;
cheat->negativeRepeat = 0;
return true;
}
static bool GBCheatAddGameShark(struct GBCheatSet* cheats, uint32_t op) {
return GBCheatAddCodebreaker(cheats, ((op & 0xFF) << 8) | ((op >> 8) & 0xFF), (op >> 16) & 0xFF);
}
static bool GBCheatAddGameSharkLine(struct GBCheatSet* cheats, const char* line) {
uint32_t op;
if (!hex32(line, &op)) {
@ -111,6 +115,7 @@ bool GBCheatAddLine(struct mCheatSet* set, const char* line, int type) {
uint16_t op1;
uint8_t op2;
uint8_t op3;
bool codebreaker = false;
const char* lineNext = hex16(line, &op1);
if (!lineNext) {
return false;
@ -123,16 +128,22 @@ bool GBCheatAddLine(struct mCheatSet* set, const char* line, int type) {
return false;
}
if (lineNext[0] == '-') {
return false;
codebreaker = true;
++lineNext;
}
lineNext = hex8(lineNext, &op3);
if (!lineNext) {
return false;
}
uint32_t realOp = op1 << 16;
realOp |= op2 << 8;
realOp |= op3;
return GBCheatAddGameShark(cheats, realOp);
if (codebreaker) {
uint16_t address = (op1 << 8) | op2;
return GBCheatAddCodebreaker(cheats, address, op3);
} else {
uint32_t realOp = op1 << 16;
realOp |= op2 << 8;
realOp |= op3;
return GBCheatAddGameShark(cheats, realOp);
}
}
static void GBCheatRefresh(struct mCheatSet* cheats, struct mCheatDevice* device) {