Increased size of bat slightly

Changed sonar to blue

rc.c

@@ -5077,8 +5077,8 @@ int movesprite(sprite_t *s) {
 							tt = gettilexy(curx, cury);
 
 							if (tt->solid) hitwall = 1;
-							if (curx < 0) hitwall = 2;
+							if (curx <= 0) hitwall = 2;
-							if (cury < 0) hitwall = 3;
+							if (cury <= 0) hitwall = 3;
 							if (curx >= LEVELW) hitwall = 4;
 							if (cury >= LEVELH) hitwall = 5;
 							dist++;
@@ -5096,7 +5096,7 @@ int movesprite(sprite_t *s) {
 				tiletype_t *tt;
 				if (s->timer3 == D_UP) {
 					tt = gettileat(s->x, s->y - s->img->h - getspeed(s), NULL, NULL);
-					if (tt->solid) {
+					if (tt->solid || (s->y - s->img->h) <= TILEH) {
 						// hit a wall
 						s->timer1 = BS_PAUSE1;
 						s->timer2 = s->timer3; // old dir