W2S Halo

vect3 CCamera::WorldToScreen(vect3 coord)//i do this vect3 vWorldToScreen(vect3 coord)
{
	float Y_fov = aCamera->Fov / aspect_ratio;//then lose the aspect_ratio cuz its in the class
	vect3 cam_to_obj(coord.x - aCamera->vWorld.x, coord.y - aCamera->vWorld.y, coord.z - aCamera->vWorld.z);
	float dist_to_obj = sqrt(cam_to_obj.x*cam_to_obj.x + cam_to_obj.y*cam_to_obj.y + cam_to_obj.z*cam_to_obj.z);
	D3DXVec3Normalize(&cam_to_obj, &cam_to_obj);

	// All angles are in radians, -PI<angle<PI, and no i dont know which could be equal to. but who cares - it's a float so it's impossible.
	float cam_yaw = atan2f(aCamera->vLookAt.y, aCamera->vLookAt.x);
	float obj_yaw = atan2f(cam_to_obj.y, cam_to_obj.x);

	// Relative(to cam) yaw ends up from -2 PI < yaw < 2 PI, but we want it from -PI<yaw<PI
	float relative_yaw = obj_yaw - cam_yaw;
	if(relative_yaw > D3DX_PI) // yaw>180 degrees. convert to negative, smaller.
		relative_yaw -= 2*D3DX_PI;
	if(relative_yaw < -D3DX_PI)
		relative_yaw += 2*D3DX_PI;
	// [/Difference]

	float obj_pitch = asin(cam_to_obj.z);
	float cam_pitch = asin(aCamera->vLookAt.z);

	float relative_pitch = cam_pitch - obj_pitch;
	float x_pos = -relative_yaw * 2 / aCamera->Fov; // radian angle measurement cancels here.
	float y_pos = relative_pitch * 2 / Y_fov; // and that's the (relative pitch) / (fov / 2)

	x_pos = (x_pos + 1) / 2; // Lastly, change from range (-1,1) to (0,1)  Also, it CAN be outside of that range - if it's outside of the FOV.
	y_pos = (y_pos + 1) / 2;

	vect3 onscreen(x_pos, y_pos, dist_to_obj); //you have working camera struct? its here
	return onscreen;
}


way hack is used

if(opt.hacks.test1)
	{
		for(unsigned short i = 0; i < StaticPlayerHeader->SlotsTaken; i++)
		{
			if(GetLocalPlayer(Local->PlayerIndex))
			{
				if(GetPlayerByIndex(i))
				{
				if(LocalPlayer->Team == StaticPlayer->Team)
					continue;

				//if(!Masterchief)
				//	continue;

				D3DXVECTOR3 HeadPos, Head2DPos;
				HeadPos.x = Masterchief->Head[10] - aCamera->vWorld[0];
				HeadPos.y = Masterchief->Head[11] - aCamera->vWorld[1];
				HeadPos.z = Masterchief->Head[12] - aCamera->vWorld[2];

				if(Head2DPos = vWorldToScreen(HeadPos))
				{
					char strPlayerName[12];
					wcstombs(strPlayerName, StaticPlayer->PlayerName1, wcslen(StaticPlayer->PlayerName1)+1);


					Menu.font->DrawTextA(Head2DPos.x, Head2DPos.y, D3DCOLOR_ARGB(255,255,255,255), strPlayerName, DT_CENTER|DT_SHADOW);

				}
			}
		}
	}