more ui tweaks and started on enemy health bar

scripts/weapon_uberscript.gd

@@ -280,6 +280,8 @@ func bullet_fire():
 func can_fire():
 	if anim_player.is_playing() and anim_player.current_animation == "reload":
 		return false
+	elif weapon_info.weapon_type == 0 and GameGlobals.gun_ammo[weapon_info.gun_name] <= 0:
+		return false
 	else:
 		return true