+
+ tunrot = nframes;
+ bgmat[0] = (COS(tunrot) * 140) >> 8;
+ bgmat[1] = (-SIN(tunrot) * 140) >> 8;
+ bgmat[2] = (SIN(tunrot) * 140) >> 8;
+ bgmat[3] = (COS(tunrot) * 140) >> 8;
+ bgx = (120 << 8) - bgmat[0] * 120 + bgmat[1] * -80;
+ bgy = (80 << 8) - bgmat[2] * 120 + bgmat[3] * -80;
+