- if(bnstate & BN_LT) uoffs++;
- if(bnstate & BN_RT) uoffs--;
-
- bgmat[0] = COS(uoffs) << 1;
- bgmat[1] = -SIN(uoffs) << 1;
- bgmat[2] = SIN(uoffs) << 1;
- bgmat[3] = COS(uoffs) << 1;
- bgx = (120 << 8) - bgmat[0] * 120 + bgmat[1] * -80;
- bgy = (80 << 8) - bgmat[2] * 120 + bgmat[3] * -80;