+ // taper off if we would hit the barrier in under 2 seconds.
+ if(back_dist + (screendx - SCREENDXMIN)*2*20*opt_gamespeed < 0) {
+ screendx = SCREENDXMIN - (back_dist/(2*20*opt_gamespeed));
+ }
+
+ xscroll = screendx * framelen;
+ yscroll = screendy * framelen;
+ back_dist += (screendx - SCREENDXMIN)*framelen;
+