IF BT AND 1 THEN Y=Y-1 IF BT AND 2 THEN Y=Y+1 IF BT AND 4 THEN X=X-1 IF BT AND 8 THEN X=X+1 ↓改良 Y=Y-(BT==1)+(BT==2) X=X-(BT==4)+(BT==8) 前者88文字、後者28文字で後者が断然お得