Need help making a simple aimbot that is opened by .exe

bool GetTagPos(Entity_T *pEnt,char *szTag,float flOut[3])
{
	WORD wTag=GetTagByName(szTag); 
	if(!wTag) 
		return false;

	DWORD dwCall=0x00571790;

	__asm
	{
		MOV ESI,pEnt;
		MOVZX EDI,wTag;
		PUSH flOut;
		CALL dwCall;
		ADD ESP,0x4
	}

	return true;
}

How about this:

void ESP()
{

	float Screen[2];
	float Origin[3];
	char* cor = "^1";
	w2s_t * calc = GetCalc();
	for(int i = 0; i < ENTITIESMAX; i++)
	{
		if (Entities[i]->Type != ET_PLAYER)
			continue;
		if ((i < PLAYERMAX) && Entities[i]->Valid && (Entities[i]->IsAlive & 1) && !(Cg->ClientNumber == Entities[i]->ClientNumber))
		{

			cor = "^1";
			for(int j = 0;j < 20;j++)
			{
				GetTagPos(Entities[i], Bones[j], BonePos[j]);	
				if (w2s(0, calc, BonePos[j], Screen))
				{
					if(j==0 && CanBeKilled(Entities[i]->Origin)){
						cor = "^3";
					}
					if (((Clients[i]->Team == 1) || (Clients[i]->Team == 2)) && (Clients[i]->Team == MyTeam))
					{

						if(j == 0)
						{

							DrawText(true,Screen[0], Screen[1]-10,pFont, WHITE, "^7[^2%s^7]", Clients[i]->Name);							
							DrawText(true,Screen[0], Screen[1]-20,pFont, RED, "^7[^2%.2f^7]", PegarDistancia(RefDef->Origin, Entities[i]->Origin));
						}
					}
					else
					{

						if(j == 0)
						{							
							DrawText(true,Screen[0], Screen[1]-10,pFont, WHITE, "^7[%s%s^7]",cor, Clients[i]->Name);
							DrawText(true,Screen[0], Screen[1]-20,pFont, RED, "^7[^2%.2f^7]", PegarDistancia(RefDef->Origin, Entities[i]->Origin));							
							Make3DBox(BonePos[j], GetBoxWidth(Entities[i]), -GetBoxHeight(Entities[i]), RED);
						}

					}

				}
			}
		}
	}
}