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GBA: Allow overriding GameShark type

This commit is contained in:
Jeffrey Pfau 2015-02-10 00:42:11 -08:00
parent 7d36331dc4
commit 9c3e16925b
1 changed files with 34 additions and 9 deletions
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43
src/gba/cheats.c
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@ -212,6 +212,18 @@ static void _reseedGameShark(uint32_t* seeds, uint16_t params, const uint8_t* t1
} }
} }
static void _setGameSharkVersion(struct GBACheatSet* cheats, int version) {
cheats->gsaVersion = 1;
switch (version) {
case 1:
memcpy(cheats->gsaSeeds, _gsa1S, 4 * sizeof(uint32_t));
break;
case 3:
memcpy(cheats->gsaSeeds, _par3S, 4 * sizeof(uint32_t));
break;
}
}
static bool _addGSA1(struct GBACheatSet* cheats, uint32_t op1, uint32_t op2) { static bool _addGSA1(struct GBACheatSet* cheats, uint32_t op1, uint32_t op2) {
enum GBAGameSharkType type = op1 >> 28; enum GBAGameSharkType type = op1 >> 28;
struct GBACheat* cheat = 0; struct GBACheat* cheat = 0;
@ -570,16 +582,14 @@ bool GBACheatAddGameShark(struct GBACheatSet* set, uint32_t op1, uint32_t op2) {
// Try to detect GameShark version // Try to detect GameShark version
_decryptGameShark(&o1, &o2, _gsa1S); _decryptGameShark(&o1, &o2, _gsa1S);
if ((o1 & 0xF0000000) == 0xF0000000 && !(o2 & 0xFFFFFCFE)) { if ((o1 & 0xF0000000) == 0xF0000000 && !(o2 & 0xFFFFFCFE)) {
set->gsaVersion = 1; _setGameSharkVersion(set, 1);
memcpy(set->gsaSeeds, _gsa1S, 4 * sizeof(uint32_t));
return _addGSA1(set, o1, o2); return _addGSA1(set, o1, o2);
} }
o1 = op1; o1 = op1;
o2 = op2; o2 = op2;
_decryptGameShark(&o1, &o2, _par3S); _decryptGameShark(&o1, &o2, _par3S);
if ((o1 & 0xFE000000) == 0xC4000000 && !(o2 & 0xFFFF0000)) { if ((o1 & 0xFE000000) == 0xC4000000 && !(o2 & 0xFFFF0000)) {
set->gsaVersion = 3; _setGameSharkVersion(set, 3);
memcpy(set->gsaSeeds, _par3S, 4 * sizeof(uint32_t));
return _addGSA3(set, o1, o2); return _addGSA3(set, o1, o2);
} }
break; break;
@ -614,8 +624,9 @@ bool GBACheatParseFile(struct GBACheatDevice* device, struct VFile* vf) {
char cheat[MAX_LINE_LENGTH]; char cheat[MAX_LINE_LENGTH];
struct GBACheatSet* set = 0; struct GBACheatSet* set = 0;
struct GBACheatSet* newSet; struct GBACheatSet* newSet;
int gsaVersion = 0;
while (true) { while (true) {
size_t i; size_t i = 0;
ssize_t bytesRead = vf->readline(vf, cheat, sizeof(cheat)); ssize_t bytesRead = vf->readline(vf, cheat, sizeof(cheat));
if (bytesRead == 0) { if (bytesRead == 0) {
break; break;
@ -623,12 +634,14 @@ bool GBACheatParseFile(struct GBACheatDevice* device, struct VFile* vf) {
if (bytesRead < 0) { if (bytesRead < 0) {
return false; return false;
} }
switch (cheat[0]) { while (isspace(cheat[i])) {
++i;
}
switch (cheat[i]) {
case '#': case '#':
i = 1; do {
while (isspace(cheat[i])) {
++i; ++i;
} } while (isspace(cheat[i]));
newSet = malloc(sizeof(*set)); newSet = malloc(sizeof(*set));
GBACheatSetInit(newSet, &cheat[i]); GBACheatSetInit(newSet, &cheat[i]);
if (set) { if (set) {
@ -639,13 +652,25 @@ bool GBACheatParseFile(struct GBACheatDevice* device, struct VFile* vf) {
newSet->hook = set->hook; newSet->hook = set->hook;
++newSet->hook->refs; ++newSet->hook->refs;
} }
} else {
_setGameSharkVersion(newSet, gsaVersion);
} }
set = newSet; set = newSet;
break; break;
case '!':
do {
++i;
} while (isspace(cheat[i]));
if (strncasecmp(&cheat[i], "GSAv", 4) == 0 || strncasecmp(&cheat[i], "PARv", 4) == 0) {
i += 4;
gsaVersion = atoi(&cheat[i]);
}
break;
default: default:
if (!set) { if (!set) {
set = malloc(sizeof(*set)); set = malloc(sizeof(*set));
GBACheatSetInit(set, 0); GBACheatSetInit(set, 0);
_setGameSharkVersion(set, gsaVersion);
} }
GBACheatAddLine(set, cheat); GBACheatAddLine(set, cheat);
break; break;