choice of the magic sword graphics now depends on the scale; in shmup, the tip is now set automatically based on the graphics

geometry.cpp

@@ -25,6 +25,8 @@ transmatrix invheptmove[MAX_EDGE], invhexmove[MAX_EDGE];
 
 ld hexshift;
 
+ld sword_size = 0;
+
 // the results are:
 // hexf = 0.378077 hcrossf = 0.620672 tessf = 1.090550
 // hexhexdist = 0.566256