Update balloon.lua, sum_airship_texture.png, and sum_airship_texture_oak_boat.png

balloon.lua

@@ -19,18 +19,115 @@ local ship = {
     backface_culling = false,
 	mesh = "sum_airship.b3d",
 	textures = {"sum_airship_texture.png"},
-    on_rightclick = me.on_rightclick,
-    on_activate = me.on_activate,
-    get_staticdata = me.get_staticdata,
-    on_death = me.on_death,
-    on_step = me.on_step,
+	_animations = {
+		idle = {x=  10, y= 90},
+		fly = {x=  91, y= 170},
+		boost = {x=  91, y= 170},
+	},
 	_driver = nil,
 	_removed = false,
     _flags = {},
     _itemstring = "sum_airship:boat",
+	_passenger = nil,
+	_vel = 0,
+	_regen_timer = 0,
+	_fuel = 0,
+	_sounds = {
+		engine = {
+			handle = nil,
+			gain = 0.1,
+			playing = false,
+			time_elapsed = 0,
+		},
+		engine_stop = {
+			handle = nil,
+			gain = 0.1,
+			playing = false,
+			time_elapsed = 0,
+		},
+	}
 }
 
-function me.on_activate(self, staticdata, dtime_s)
+local sounds = {
+	engine_idle = {
+		sound_name = "sum_airship_lip_trill",
+		gain = 1.4,
+		max_hear_distance = 10,
+		loop = false,
+		pitch = 0.75,
+	},
+	engine_stop = {
+		sound_name = "sum_airship_lip_trill_end",
+		gain = 2.2,
+		max_hear_distance = 10,
+		loop = false,
+		pitch = 1,
+	},
+	engine_boost = {
+		sound_name = "sum_airship_lip_trill",
+		gain = 40,
+		max_hear_distance = 10,
+		loop = false,
+		pitch = 1,
+	},
+}
+
+function me.sound_play(self, sound_obj, sound_instance)
+	sound_instance.handle = minetest.sound_play(sound_obj.sound_name, {
+		gain = sound_obj.gain,
+		max_hear_distance = sound_obj.max_hear_distance,
+		loop = sound_obj.loop,
+		pitch = sound_obj.pitch or 1,
+		object = self.object,
+	})
+	sound_instance.playing = true
+	sound_instance.time_elapsed = 0
+end
+
+function me.sound_stop(sound_instance)
+	if sound_instance.handle then
+		minetest.sound_stop(sound_instance.handle)
+	end
+	sound_instance.playing = false
+	sound_instance.time_elapsed = 0
+	sound_instance.handle = nil
+end
+
+function me.update_sound(self, dtime, forward)
+	local fuel = self._fuel
+	local is_thrust = forward ~= 0 and self._driver
+	if not fuel or not type(fuel) == "number" then self._fuel = 0 end
+
+	if self._sounds.engine.time_elapsed > 2.1
+	and self._sounds.engine.handle
+	and self._sounds.engine.playing then
+		me.sound_stop(self._sounds.engine)
+	end
+	if not self._sounds.engine.playing then
+		if self._fuel > 1 then
+			me.sound_play(self, sounds.engine_boost, self._sounds.engine)
+		elseif is_thrust then
+			me.sound_play(self, sounds.engine_idle, self._sounds.engine)
+		end
+		if self._fuel > 1 and self._sounds.engine_stop.playing then
+			me.sound_stop(self._sounds.engine_stop)
+		end
+	end
+
+	if self._fuel <= 1 and self._sounds.engine.playing then
+		if self._fuel > 0 and not self._sounds.engine_stop.playing
+		and self._sounds.engine_stop.time_elapsed == 0 then
+			me.sound_play(self, sounds.engine_stop, self._sounds.engine_stop)
+		end
+		if not is_thrust
+		or (self._sounds.engine_stop.time_elapsed == 0
+		and self._sounds.engine_stop.playing) then
+			me.sound_stop(self._sounds.engine)
+		end
+	end
+end
+
+function ship.on_activate(self, staticdata, dtime_s)
 	local data = minetest.deserialize(staticdata)
 	if type(data) == "table" then
 		self._itemstring = data.itemstring
@@ -42,10 +139,10 @@ function me.on_activate(self, staticdata, dtime_s)
         self._flags = data._flags
         if self._driver then me.detach(self) end
 	end
-    self.object:set_animation({x=0, y=149}, 24)
+    self.object:set_animation(ship._animations.idle, 24)
 end
 
-function me.get_staticdata(self)
+function ship.get_staticdata(self)
 	return minetest.serialize({
 		itemstring = self._itemstring,
         _driver = ((self._driver and self._driver:is_player())
@@ -72,7 +169,7 @@ function me.detach(self)
 end
 
 
-function me.on_death(self, killer)
+function ship.on_death(self, killer)
 	if killer and killer:is_player()
     and not minetest.is_creative_enabled(killer:get_player_name()) then
 		local inv = killer:get_inventory()
@@ -84,16 +181,22 @@ function me.on_death(self, killer)
 	self._driver = nil
 end
 
-function me.on_rightclick(self, clicker)
+function ship.on_rightclick(self, clicker)
 	local item = clicker:get_wielded_item()
 	local item_name = item:get_name()
-	if clicker and item and item_name
+	if clicker and (item and item_name)
     and (string.find(item_name, ":coal")
 	or string.find(item_name, ":charcoal")) then
 		if not minetest.is_creative_enabled(clicker:get_player_name()) then
 			item:take_item()
 			clicker:set_wielded_item(item)
 		end
+		self._fuel = self._fuel + sum_airship.fuel_time
+		me.sound_stop(self._sounds.engine)
+		minetest.sound_play("sum_airship_fire", {
+			gain = 1,
+			object = self.object,
+		})
 	else
 		me.attach(self, clicker)
 	end
@@ -151,7 +254,7 @@ function me.get_balloon_collide(self)
 	return force
 end
 
-function me.on_step(self, dtime, moveresult)
+function ship.on_step(self, dtime, moveresult)
     local exit = false
     local pi = nil
     -- allow to exit