spicetools/games/mga/mga.cpp

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2024-08-28 15:10:34 +00:00
#include "mga.h"
#include "acio/icca/icca.h"
#include "hooks/devicehook.h"
#include "util/detour.h"
#include "util/libutils.h"
#include "util/logging.h"
#include "util/detour.h"
#include "util/sigscan.h"
#include "gunio.h"
namespace games::mga {
void (__cdecl *ess_eventlog_request_error_orig)(const char *, unsigned int, int, int);
static int __cdecl log_change_level_hook(int level) {
log_misc("mga", "ignoring log_change_level({})", level);
return 1;
}
static uintptr_t __cdecl log_change_output_hook(uintptr_t target, uintptr_t a2) {
log_misc("mga", "ignoring log_change_output(0x{:x}, 0x{:x})", target, a2);
return 0;
}
static bool __cdecl setvolume_hook(uint8_t volume) {
log_misc("mga", "ignoring setvolume {}", static_cast<int>(volume));
return false;
}
static void __cdecl ess_eventlog_request_error_hook(const char *a1, unsigned int a2, int a3, int a4) {
log_info("mga", "ess_eventlog_request_error({}, {}, {}, {})", a1, a2, a3, a4);
//ess_eventlog_request_error_orig(a1, a2, a3, a4);
}
MGAGame::MGAGame() : Game("Metal Gear Arcade") {
}
void MGAGame::attach() {
Game::attach();
// load system.dll (along with the serial functions)
auto system = libutils::load_library("system.dll");
// add the gun
devicehook_init();
devicehook_add(new SpiceGearGunHandle());
// fix ICCA
acio::ICCA_COMPAT_ACTIVE = true;
// ignore sound engine failure
if (!replace_pattern(
system,
"E8????????84C0750A68F4010000E8????????E8????????E8????????3BF3750433C0EB0C",
"??????????????????90909090909090909090????????????????????????????????????",
0, 0))
{
log_warning("mga", "failed to patch sound engine");
}
// hook setvolume
if (!detour::iat_try("?setvolume@@YAHPAD@Z", setvolume_hook)) {
log_warning("mga", "setvolume hook failed");
}
// stop the game from redirecting AVS log calls
detour::iat_try("log_change_level", log_change_level_hook);
detour::iat_try("log_change_output", log_change_output_hook);
ess_eventlog_request_error_orig = detour::iat_try("ess_eventlog_request_error", ess_eventlog_request_error_hook);
}
void MGAGame::detach() {
Game::detach();
devicehook_dispose();
}
}