added hook functions

entities.lua

@@ -393,7 +393,7 @@ minetest.register_entity("ap_airship:airship", {
         physical = true,
         collide_with_objects = true, --true,
         collisionbox = {-10, -4.1, -10, 10, 15, 10}, --{-1,0,-1, 1,0.3,1},
-        selectionbox = {-2, -3.5, -2, 2,  0, 2},
+        selectionbox = {-2, -4.1, -2, 2,  0, 2},
         visual = "mesh",
         backface_culling = false,
         mesh = "ap_airship_mesh.b3d",
@@ -416,6 +416,7 @@ minetest.register_entity("ap_airship:airship", {
     physics = ap_airship.physics,
     hull_integrity = nil,
     owner = "",
+    _vehicle_custom_data = {},
     _shared_owners = {},
     _engine_running = false,
     _power_lever = 0,
@@ -439,6 +440,7 @@ minetest.register_entity("ap_airship:airship", {
     _inv_id = "",
     _name_color = 0,
     _name_hor_aligment = 3.0,
+    _simple_attach_pos = {x=0,y=-25,z=-40},
 
     item = "ap_airship:airship",
 
@@ -458,6 +460,7 @@ minetest.register_entity("ap_airship:airship", {
             stored_inv_id = self._inv_id,
             stored_passengers = self._passengers, --passengers list
             stored_passengers_locked = self._passengers_locked,
+            stored_vehicle_custom_data = self._vehicle_custom_data or {},
             stored_ship_name = self._ship_name,
         })
     end,
@@ -489,6 +492,15 @@ minetest.register_entity("ap_airship:airship", {
             self._passengers = data.stored_passengers or ap_airship.copy_vector({[1]=nil, [2]=nil, [3]=nil, [4]=nil, [5]=nil, [6]=nil, [7]=nil, [8]=nil, [9]=nil, [10]=nil, [11]=nil, [12]=nil})
             self._passengers_locked = data.stored_passengers_locked
             self._ship_name = data.stored_ship_name
+
+            local custom_data = data.stored_vehicle_custom_data or nil
+            if custom_data then
+                self._vehicle_custom_data = custom_data
+            else
+                -- o macete aqui eh inicializar mesmo que não exista no escopo da entity
+                self._vehicle_custom_data = {} --initialize it
+            end
+
             --minetest.debug("loaded: ", self._energy)
             local properties = self.object:get_properties()
             properties.infotext = data.stored_owner .. " nice airship"
@@ -500,6 +512,7 @@ minetest.register_entity("ap_airship:airship", {
             colstr = "blue"
             self.color = colstr
         end
+
         ap_airship.paint(self, self.color)
         ap_airship.paint2(self, self.color2)
         local pos = self.object:get_pos()
@@ -564,6 +577,7 @@ minetest.register_entity("ap_airship:airship", {
         end
 
         ap_airship.engine_step(self, 0)
+        airutils.restore_external_attach(self)
     end,
 
     on_step = function(self,dtime,colinfo)

forms.lua

@@ -57,6 +57,19 @@ function ap_airship.pax_formspec(name)
     minetest.show_formspec(name, "ap_airship:passenger_main", basic_form)
 end
 
+function ap_airship.external_attach(name)
+    local basic_form = table.concat({
+        "formspec_version[3]",
+        "size[6,3]",
+	}, "")
+
+    basic_form = basic_form.."label[1,1.0;Attach Outside:]"
+    basic_form = basic_form.."button[1,1.2;2,1;attach;Attach]"
+    basic_form = basic_form.."button[3,1.2;2,1;dettach;Dettach]"
+
+    minetest.show_formspec(name, "ap_airship:attach_main", basic_form)
+end
+
 function ap_airship.logo_formspec(name)
     local basic_form = table.concat({
         "formspec_version[3]",
@@ -143,7 +156,7 @@ minetest.register_on_player_receive_fields(function(player, formname, fields)
         end
         minetest.close_formspec(name, "ap_airship:passenger_main")
 	end
-    if formname == "ap_airship:logo_main" then
+    if formname == "ap_airship:attach_main" then
         local name = player:get_player_name()
         local plane_obj = ap_airship.getPlaneFromPlayer(player)
         if plane_obj == nil then
@@ -152,8 +165,11 @@ minetest.register_on_player_receive_fields(function(player, formname, fields)
         end
         local ent = plane_obj:get_luaentity()
         if ent then
-		    if fields.logo or fields.set_logo then
+		    if fields.attach then
-                ap_airship.set_logo(ent, fields.logo)
+                airutils.simple_external_attach(ent, ent._simple_attach_pos, "albatros_d5:albatros_d5", 22)
+		    end
+		    if fields.dettach then
+                airutils.dettach_entity(ent)
 		    end
         end
         minetest.close_formspec(name, "ap_airship:logo_main")
@@ -465,3 +481,30 @@ minetest.register_chatcommand("airship_eject", {
 		end
 	end
 })
+
+minetest.register_chatcommand("external_attach_menu", {
+	params = "",
+	description = "Opens the panel to attach or dettach an external object",
+	privs = {interact = true},
+	func = function(name, param)
+        local colorstring = core.colorize('#ff0000', " >>> you are not inside a airship")
+        local player = minetest.get_player_by_name(name)
+        local attached_to = player:get_attach()
+
+		if attached_to ~= nil then
+            local seat = attached_to:get_attach()
+            if seat ~= nil then
+                local entity = seat:get_luaentity()
+                if entity then
+                    if entity.name == "ap_airship:airship" then
+                        ap_airship.external_attach(name)
+                    else
+			            minetest.chat_send_player(name,colorstring)
+                    end
+                end
+            end
+		else
+			minetest.chat_send_player(name,colorstring)
+		end
+	end
+})

init.lua

@@ -134,7 +134,7 @@ minetest.register_craftitem("ap_airship:airship", {
         --local node_below = minetest.get_node(pointed_pos).name
         --local nodedef = minetest.registered_nodes[node_below]
         
-		pointed_pos.y=pointed_pos.y+4
+		pointed_pos.y=pointed_pos.y+4.6
 		local airship = minetest.add_entity(pointed_pos, "ap_airship:airship")
 		if airship and placer then
             local ent = airship:get_luaentity()