add prototype engine

mods/fl_trains/engine.lua

@@ -0,0 +1,108 @@
+local function speed_check(vec, limit)
+    local v = vector.apply(vec, math.abs)
+    local l = limit
+    if v.x >= l then return false
+    elseif v.y >= l then return false
+    elseif v.z >= l then return false end
+    return true
+end
+
+minetest.register_entity("fl_trains:train_engine", {
+    --mte object properties
+    initial_properties = {
+        physical = true,
+        --stepheight = 0.4,
+        collide_with_objects = true,
+        collisionbox = {-0.5, -0.5, -0.5, 0.5, 0.5, 0.5},
+        visual = "mesh",
+        mesh = "farlands_train_engine.obj",
+        textures = {
+            "farlands_train_engine.png",
+        },
+        backface_culling = false,
+        visual_size = {x=10, y=10, z=10},
+        static_save = true,
+        damage_texture_modifier = "^[colorize:#FF000040"
+    },
+
+    --on_step = mobkit.stepfunc, --this is required
+    on_activate = function(self, staticdata, dtime_s)
+        --load memory
+        local sdata = minetest.deserialize(staticdata)
+        if sdata then
+            for k,v in pairs(sdata) do
+                self[k] = v
+            end
+        end
+        if not self.memory then self.memory = {} end
+        --other stuff
+    end,
+    get_staticdata = function(self)
+        local tmp = {memory = self.memory}
+        return minetest.serialize(tmp)
+    end,
+    on_step = function(self, dtime, moveresult)
+        local yaw = tonumber(string.format("%.2f", self.object:get_yaw()))
+        local dir = vector.round(minetest.yaw_to_dir(yaw))
+        local pos = self.object:get_pos()
+        local pos2 = vector.add(dir, pos)
+        local node = minetest.get_node_or_nil(pos2)
+        if not node then self.object:set_velocity(vector.new(0,0,0)) return end
+        if node.name ~= "fl_trains:straight_track" then
+            self.object:set_velocity(vector.new(0,0,0))
+            return
+        end
+
+        local vel = self.object:get_velocity()
+        local player
+        if self.memory.driver then player = minetest.get_player_by_name(self.memory.driver) end
+        if not player then return end
+        if player:get_player_control().up and speed_check(vel, 5) then
+            self.object:add_velocity(vector.multiply(dir, 0.2))
+        end
+
+    end,
+
+    on_punch = function(self, puncher, time_from_last_punch, tool_capabilities, dir)
+        self.object:remove()
+    end,
+
+    on_rightclick=function(self, clicker)
+        if #self.object:get_children() > 0 then
+            for _, obj in pairs(self.object:get_children()) do
+                if obj:is_player() and obj:get_player_name() == self.memory.driver then
+                    obj:set_detach()
+                    obj:set_properties({visual_size = vector.new(1,1,1)})
+                    fl_player.ignore[obj:get_player_name()] = nil
+                    obj:set_eye_offset(vector.new(0,0,0), vector.new(0,0,0))
+                    self.memory.driver = nil
+                end
+            end
+        else
+            clicker:set_attach(self.object, "", vector.new(0,-0.49,0.45), vector.new(0,0,0), true)
+            clicker:set_properties({visual_size = vector.new(.075,.075,.075)})
+            fl_player.ignore[clicker:get_player_name()] = true
+            clicker:set_animation(fl_player.animations["sit"], 15)
+            clicker:set_eye_offset(vector.new(0,-13,5.5), vector.new(0,-13,5.5))
+            self.memory.driver = clicker:get_player_name()
+        end
+    end,
+})
+
+minetest.register_craftitem("fl_trains:train_engine", {
+    description = "train_engine",
+    inventory_image = "farlands_cart_item.png",
+    wield_image = "farlands_cart_item.png",
+    on_place = function(itemstack, placer, pointed_thing)
+        if pointed_thing.type ~= "node" then return end
+        local node = minetest.get_node_or_nil(pointed_thing.under)
+        if string.find(node.name, "fl_trains") then
+            local ent = minetest.add_entity(pointed_thing.under, "fl_trains:train_engine")
+            if node.name == "fl_trains:straight_track" and node.param2%2 ~= 0 then
+                ent:set_rotation(vector.new(0,90*(math.pi/180),0))
+                minetest.chat_send_all(ent:get_yaw())
+            end
+        end
+    end,
+    --groups = {not_in_creative_inventory = 1}
+})

mods/fl_trains/init.lua

@@ -1,3 +1,4 @@
 local modpath = minetest.get_modpath("fl_trains")
 dofile(modpath .. "/track.lua")
-dofile(modpath .. "/cart.lua")
+dofile(modpath .. "/cart.lua")
+dofile(modpath .. "/engine.lua")

mods/fl_trains/models/farlands_train_engine.obj

@@ -0,0 +1,153 @@
+# Blender v2.93.3 OBJ File: ''
+# www.blender.org
+o Cube_Cube.006
+v 0.050000 0.400000 -0.650000
+v 0.050000 0.500000 -0.650000
+v 0.050000 0.400000 -0.750000
+v 0.050000 0.500000 -0.750000
+v 0.150000 0.400000 -0.650000
+v 0.150000 0.500000 -0.650000
+v 0.150000 0.400000 -0.750000
+v 0.150000 0.500000 -0.750000
+v -0.250000 0.400000 0.250000
+v 0.250000 0.400000 0.250000
+v -0.250000 0.400000 -0.897500
+v 0.250000 0.400000 -0.897500
+v 0.495000 -0.250000 -0.995000
+v 0.495000 -0.500000 -0.995000
+v 0.495000 -0.250000 0.995000
+v 0.495000 -0.500000 0.995000
+v -0.495000 -0.250000 -0.995000
+v -0.495000 -0.500000 -0.995000
+v -0.495000 -0.250000 0.995000
+v -0.495000 -0.500000 0.995000
+v -0.495000 -0.250000 0.995000
+v -0.495000 0.500000 0.995000
+v -0.495000 -0.250000 0.245000
+v -0.495000 0.500000 0.245000
+v 0.495000 -0.250000 0.995000
+v 0.495000 0.500000 0.995000
+v 0.495000 -0.250000 0.245000
+v 0.495000 0.500000 0.245000
+v 0.395000 -0.250000 -0.895000
+v 0.395000 -0.250000 0.245000
+v 0.250000 0.400000 0.250000
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+v -0.395000 -0.250000 -0.895000
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+v -0.250000 0.400000 0.250000
+v -0.250000 0.400000 -0.900000
+vt 0.265625 0.562500
+vt 0.234375 0.562500
+vt 0.234375 0.531250
+vt 0.265625 0.531250
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+vt 0.562500 0.296875
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+vt 0.531250 0.296875
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+vt 0.531250 0.328125
+vt 0.859375 0.312500
+vt 0.734375 0.312500
+vt 0.734375 0.000000
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+vt 0.000000 0.796875
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+vt 1.000000 0.765625
+vt 0.812500 0.812500
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+vt 1.000000 0.640625
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+vt 0.265625 0.328125
+vn -1.0000 0.0000 0.0000
+vn 0.0000 0.0000 -1.0000
+vn 1.0000 0.0000 0.0000
+vn 0.0000 0.0000 1.0000
+vn 0.0000 1.0000 0.0000
+vn 0.0000 -1.0000 0.0000
+vn 0.9760 0.2177 0.0000
+vn -0.9760 0.2177 0.0000
+vn 0.0000 -0.0077 -1.0000
+s off
+f 1/1/1 2/2/1 4/3/1 3/4/1
+f 3/5/2 4/6/2 8/7/2 7/8/2
+f 7/9/3 8/10/3 6/11/3 5/12/3
+f 5/13/4 6/14/4 2/15/4 1/16/4
+f 8/17/5 4/18/5 2/19/5 6/20/5
+f 9/21/5 10/22/5 12/23/5 11/24/5
+f 16/25/4 15/26/4 19/27/4 20/28/4
+f 20/29/1 19/30/1 17/31/1 18/32/1
+f 18/33/6 14/34/6 16/35/6 20/36/6
+f 14/37/3 13/38/3 15/39/3 16/40/3
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+f 29/77/5 30/81/5 27/82/5 13/78/5

mods/fl_trains/track.lua

@@ -5,7 +5,7 @@ minetest.register_node("fl_trains:straight_track", {
     drawtype = "mesh",
     mesh = "farlands_straight.obj",
     tiles = {"farlands_rail.png", "farlands_ties.png"},
-    groups = {oddly_breakable_by_hand = 3, not_in_creative_inventory = 1},
+    groups = {oddly_breakable_by_hand = 3},--, not_in_creative_inventory = 1},
     selection_box = {
         type = "fixed",
         fixed = {-0.5,-0.5,-0.5,0.5,-0.475,0.5},