dm shoot sound

api.lua

@@ -533,9 +533,55 @@ function mobs:register_arrow(name, def)
 		hit_player = def.hit_player,
 		hit_node = def.hit_node,
 
+		count = 0,
+		sounds = {},
+
 		on_step = function(self, dtime)
+			self.object:set_properties({textures = {"mobs_fireball.png^[transform"..math.random(0,7)}})
+			local vel = self.object:getvelocity()
+			local quiet = vector.equals(vel, {x=0,y=0,z=0})
+			if quiet
+			and (not self.vel or vector.equals(self.vel, {x=0,y=0,z=0})) then
+				for _,i in pairs(self.sounds) do
+					minetest.sound_stop(i)
+				end
+				self.object:remove()
+				return
+			end
+			if not self.vel then
+				self.vel = vel
+				self.object:setvelocity({x=0,y=0,z=0})
+				local newp = vector.normalize({x=vel.x, y=0, z=vel.z})
+				self.object:setpos(vector.add(self.object:getpos(), newp))
+				for _,i in pairs(self.sounds) do
+					minetest.sound_stop(i)
+				end
+			end
 			local pos = self.object:getpos()
-			if minetest.env:get_node(self.object:getpos()).name ~= "air" then
+			if quiet then
+				local count = self.count
+				if count >= 60 then
+					minetest.sound_play("mobs_fireball", {pos = pos})
+					for _,i in pairs(self.sounds) do
+						minetest.sound_stop(i)
+					end
+					self.object:setvelocity(self.vel)
+					return
+				end
+				count = count+1
+				self.sounds[count] = minetest.sound_play("mobs_dm", {
+					pos = pos,
+					gain = count/50,
+					loop = true
+				})
+				self.count = count
+				return
+			end
+				for _,i in pairs(self.sounds) do
+					minetest.sound_stop(i)
+				end
+
+			if minetest.env:get_node(pos).name ~= "air" then
 				self.hit_node(self, pos, node)
 				self.object:remove()
 				return
@@ -548,6 +594,13 @@ function mobs:register_arrow(name, def)
 					return
 				end
 			end
-		end
+		end,
+
+		on_serialize = function(self)
+			self.object:remove()
+			for _,i in pairs(self.sounds) do
+				minetest.sound_stop(i)
+			end
+		end,
 	})
 end

init.lua

@@ -376,9 +376,9 @@ mobs:register_mob("mobs:dungeon_master", {
 	attack_type = "shoot",
 	arrow = "mobs:fireball",
 	shoot_interval = 2.5,
-	sounds = {
+	--[[sounds = {
 		attack = "mobs_fireball",
-	},
+	},--]]
 	animation = {
 		stand_start = 0,
 		stand_end = 19,