radarrect.ASI source

main.cpp

#include <Windows.h>
#include <cmath>

float flt = 0.000001f;

void InjectJmp(unsigned long _offset, void* target){

	void *pBlock = VirtualAlloc(0, 0x1000, MEM_COMMIT | MEM_RESERVE, PAGE_EXECUTE_READWRITE);
	unsigned long Protection;
	VirtualProtect((void*)_offset, 5, PAGE_EXECUTE_READWRITE, &Protection);
	unsigned long offs = (unsigned long)pBlock - (_offset + 5);
	*reinterpret_cast<unsigned char*>(_offset) = 0xE9;
	memcpy((LPVOID)(_offset + 1), &offs, 4);
	VirtualProtect((void*)_offset, 5, Protection, 0);

	memcpy(pBlock, "\xE9", 1);
	offs = (DWORD)target - ((DWORD)pBlock + 5);
	memcpy((void*)((unsigned long)pBlock + 1), &offs, sizeof(void*));
	memcpy((void*)((unsigned long)pBlock + 5), "\xE9", 1);
	unsigned long retAddr = ((DWORD)pBlock + 5 + 5) - 0x58334D;
	memcpy((void*)((unsigned long)pBlock + 6), &retAddr, sizeof(retAddr));
}

struct vec { float x, y; };
float __cdecl LimitRadarPoint(vec *point) {

	if (*reinterpret_cast<unsigned char*>(0xBA67A1)) {
		return (float)sqrt(point->y * point->y + point->x * point->x);
	}
	float sr = sqrt(point->y * point->y + point->x * point->x);

	float x;
	if (sr > 1.0)
	{
		if (point->x > -1.0 && point->x < 1.0 && point->y > -1.0 && point->y < 1.0)
			return 0.99f;

		float y = atan2(point->y, point->x);

		float angle = y * 57.295779513f;
		if (angle > 45.0 || angle <= -45.0)
		{
			if (angle > 45.0 && angle <= 135.0)
			{
				point->x = cos(angle / 57.295779513f) * 1.4142135623f;
				point->y = 1.0;
				return sr;
			}
			if (angle <= 135.0 && angle > -135.0)
			{
				point->x = cos(angle / 57.295779513f) * 1.4142135623f;
				point->y = -1.0;
				return sr;
			}
			x = -1.0;
		}
		else
		{
			x = 1.0;
		}
		point->x = x;
		point->y = sin(angle / 57.295779513f) * 1.4142135623f;
	}
	return sr;

}

template<typename T>
void WriteMemory(void* addr, T value) {
	DWORD oldProt = 0;
	VirtualProtect(addr, sizeof(T), PAGE_EXECUTE_READWRITE, &oldProt);
	*reinterpret_cast<T*>(addr) = value;
	VirtualProtect(addr, sizeof(T), oldProt, NULL);
}

BOOL WINAPI DllMain(HINSTANCE, DWORD fdwReason, LPVOID) {
	if (fdwReason == 1) {
		//hook LimitRadarPoint
		InjectJmp(0x5832F0, &LimitRadarPoint);

		// box radar 
		WriteMemory<void*>(reinterpret_cast<void*>(0x58585C), &flt);

		// disable radar border
		WriteMemory<unsigned char>(reinterpret_cast<void*>(0x58A8D9),0);
		WriteMemory<unsigned char>(reinterpret_cast<void*>(0x58A789), 0);
		WriteMemory<unsigned char>(reinterpret_cast<void*>(0x58A88F), 0);
		WriteMemory<unsigned char>(reinterpret_cast<void*>(0x58A98F), 0);
	}

	return TRUE;
}