Cube-World-Mod-Launcher/CubeModLoader/callbacks/CheckMapIconVisibilityHandl...

50 lines
1.4 KiB
C

int CheckMapIconVisibilityHandler(void* player, int a2, int a3) {
for (DLL* dll: modDLLs) {
if (dll->HandleCheckMapIconVisibility) {
if ( int result = ((int(*)(void*, int, int))dll->HandleCheckMapIconVisibility)(player, a2, a3) ){
return result;
}
}
}
return 0;
}
void* CheckMapIconVisibilityHandler_ptr = (void*)&CheckMapIconVisibilityHandler;
void* ASMCheckMapIconVisibilityHandler_jmpback;
void* ASMCheckMapIconVisibilityHandler_ret0;
void* ASMCheckMapIconVisibilityHandler_ret1;
void no_optimize ASMCheckMapIconVisibilityHandler() {
asm(PUSH_ALL
PREPARE_STACK
"call [CheckMapIconVisibilityHandler_ptr] \n"
RESTORE_STACK
// Did the handler return 1? true
"cmp eax, 1 \n"
"je 1f \n"
// Otherwise? Do nothing
POP_ALL
// original code
"mov rdi, [rcx+0x1528] \n"
"mov esi, r8d \n"
"mov ebp, edx \n"
"test rdi, rdi \n"
"jmp [ASMCheckMapIconVisibilityHandler_jmpback] \n"
"1: \n" //not
POP_ALL
"jmp [ASMCheckMapIconVisibilityHandler_ret1] \n"
);
}
void SetupCheckMapIconVisibilityHandler() {
WriteFarJMP(base+0x5F4DE, (void*)&ASMCheckMapIconVisibilityHandler);
ASMCheckMapIconVisibilityHandler_jmpback = (void*)base+0x5F4ED;
ASMCheckMapIconVisibilityHandler_ret1 = (void*)base+0x5F6B4;
}