added air capture

entities.lua

@@ -528,9 +528,11 @@ minetest.register_entity("ap_airship:airship", {
     _disconnection_check_time = 0,
     _inv = nil,
     _inv_id = "",
+    _rescue_plane = false,
     _name_color = 0,
     _name_hor_aligment = 3.0,
     _simple_attach_pos = {x=0,y=-35,z=-70},
+    _simple_attach_ent_list = {"albatros_d5:albatros_d5","sopwith_f1_camel:sopwith_f1_camel","supercub:supercub"},
 
     item = "ap_airship:airship",
 
@@ -552,6 +554,7 @@ minetest.register_entity("ap_airship:airship", {
             stored_passengers_locked = self._passengers_locked,
             stored_vehicle_custom_data = self._vehicle_custom_data or {},
             stored_ship_name = self._ship_name,
+            stored_rescue_plane = self._rescue_plane,
         })
     end,
 
@@ -582,6 +585,7 @@ 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
+            self._rescue_plane = data.stored_rescue_plane or false
 
             local custom_data = data.stored_vehicle_custom_data or nil
             if custom_data then
@@ -829,6 +833,10 @@ minetest.register_entity("ap_airship:airship", {
             self.object:set_bone_position("door", {x=0,y=-13.1266,z=54.1922}, {x=-28,y=0,z=0})
         else
             self.object:set_bone_position("door", {x=0,y=-13.1266,z=54.1922}, {x=0,y=0,z=0})
+
+            if self._rescue_plane then
+                ap_airship.timed_anchor_entity(self, curr_pos, yaw, 3, self.dtime)
+            end
         end
 
         --saves last velocy for collision detection (abrupt stop)

forms.lua

@@ -62,7 +62,17 @@ function ap_airship.external_attach(name)
         "size[6,4]",
 	}, "")
 
-    local entities = "albatros_d5:albatros_d5,sopwith_f1_camel:sopwith_f1_camel,supercub:supercub"
+    local player = minetest.get_player_by_name(name)
+    local plane_obj = ap_airship.getPlaneFromPlayer(player)
+    if plane_obj == nil then
+        return
+    end
+    local ent = plane_obj:get_luaentity()
+
+    local entities = ""
+    for k, v in pairs(ent._simple_attach_ent_list) do
+        entities = entities .. v .. ","
+    end
 
     basic_form = basic_form.."label[1,1.0;Attach Outside:]"
     basic_form = basic_form.."dropdown[1,1.6;4,0.6;entity;"..entities..";1;false]"
@@ -159,7 +169,7 @@ minetest.register_on_player_receive_fields(function(player, formname, fields)
         local name = player:get_player_name()
         local plane_obj = ap_airship.getPlaneFromPlayer(player)
         if plane_obj == nil then
-            minetest.close_formspec(name, "ap_airship:logo_main")
+            minetest.close_formspec(name, "ap_airship:attach_main")
             return
         end
         local ent = plane_obj:get_luaentity()

utilities.lua

@@ -464,3 +464,53 @@ function ap_airship.copy_vector(original_vector)
     return tablecopy
 end
 
+function ap_airship.eval_interception(initial_pos, end_pos, target_list)
+    target_list = target_list or {}
+    --minetest.chat_send_all(dump(end_pos))
+    local ret_y = nil
+	local cast = minetest.raycast(initial_pos, end_pos, true, false)
+	local thing = cast:next()
+	while thing do
+		if thing.type == "object" then
+            local object = thing.ref
+            local ent = object:get_luaentity()
+            if ent then
+                for k, v in pairs(target_list) do
+                    --minetest.chat_send_all(ent.name)
+                    if v == ent.name then
+                        return ent, object
+                    end
+                end
+            end
+        end
+        thing = cast:next()
+    end
+    return nil, nil
+end
+
+function ap_airship.timed_anchor_entity(self, curr_pos, yaw, time, dtime)
+    local time = time or 0
+    if self._vehicle_custom_data.simple_external_attach_entity ~= nil then return end
+    if not self._timed_anchor_counter then self._timed_anchor_counter = time end
+    self._timed_anchor_counter = self._timed_anchor_counter + dtime
+    if self._timed_anchor_counter < time then return nil, nil end --go out before the right time
+
+    if self._timed_anchor_counter >= time then
+        self._timed_anchor_counter = 0
+        local relative_pos = vector.new(self._simple_attach_pos)
+        local rel_pos = vector.divide(relative_pos,10)
+        local move = -1*rel_pos.z
+        local raycast_pos = vector.new(curr_pos)
+        raycast_pos.x = raycast_pos.x + move * math.sin(yaw)
+        raycast_pos.z = raycast_pos.z - move * math.cos(yaw)
+        raycast_pos.y = raycast_pos.y + rel_pos.y
+        local ent, obj = ap_airship.eval_interception(raycast_pos, {x=raycast_pos.x, y=raycast_pos.y-4, z=raycast_pos.z}, self._simple_attach_ent_list)
+        if ent then
+            local dest_pos = vector.add(vector.new(curr_pos), relative_pos)
+            --airutils.attach_external_object(self, object, ent, destination_pos, relative_pos, attach_up)
+            airutils.attach_external_object(self, obj, ent, dest_pos, relative_pos, true)
+        end
+    end
+end
+
+