// *************************
// Object subroutines
// *************************

void UpdateObjects()
	{
	long t1, t2, t3, t4;

	for (t1 = 0; t1<200; t1++)
		{
		switch(Objects[t1].type)
			{
			case GEM:
				Objects[t1].y += 1;
				if ((Counter % 200) == 0) Objects[t1].y -= 200;

				t2 = Collided((Objects[t1].x >> 2), (Objects[t1].y >> 2), 16, 16, (PXPos >> 2), (PYPos >> 2), 32, 62);
				if (t2 == 1)
					{
					Objects[t1].d = 255;
					}
				else
					{
					Objects[t1].d = 0;
					}
				break;
			case WALKER:
				t2 = GetBlockStatus((Objects[t1].x >> 2) + 7, (Objects[t1].y >> 2) + 16);
				t3 = GetBlockStatus((Objects[t1].x >> 2) - 1, (Objects[t1].y >> 2) + 7);
				t4 = GetBlockStatus((Objects[t1].x >> 2)+ 16, (Objects[t1].y >> 2) + 7);

				if ((t2 == -1) || (t3 != -1) || (t4 != -1))
					{
					Objects[t1].WALKERVELOCITY = -Objects[t1].WALKERVELOCITY;
					}

				Objects[t1].x += Objects[t1].WALKERVELOCITY;

				t2 = Collided((Objects[t1].x >> 2), (Objects[t1].y >> 2), 16, 16, (PXPos >> 2), (PYPos >> 2), 32, 62);
				if (t2 == 1)
					{
					Objects[t1].d = 255;
					}
				else
					{
					Objects[t1].d = 0;
					}
				break;
			}
		}
	}