remove train type concept and calculate train's capabilities based on used wagons

advtrains_train_industrial/init.lua

@@ -1,6 +1,8 @@
-advtrains.register_wagon("engine_industrial", "electric",{
+advtrains.register_wagon("engine_industrial", {
 	mesh="advtrains_engine_industrial.b3d",
 	textures = {"advtrains_engine_industrial.png"},
+	drives_on={default=true},
+	max_speed=20,
 	seats = {
 		{
 			name="Driver Stand (left)",
@@ -21,10 +23,12 @@ advtrains.register_wagon("engine_industrial", "electric",{
 	collisionbox = {-1.0,-0.5,-1.0, 1.0,2.5,1.0},
 	drops={"default:steelblock 4"},
 }, "Industrial Train Engine", "advtrains_engine_industrial_inv.png")
-advtrains.register_wagon("wagon_tank", "electric",{
+advtrains.register_wagon("wagon_tank", {
 	mesh="advtrains_wagon_tank.b3d",
 	textures = {"advtrains_wagon_tank.png"},
 	seats = {},
+	drives_on={default=true},
+	max_speed=20,
 	visual_size = {x=1, y=1},
 	wagon_span=2.2,
 	collisionbox = {-1.0,-0.5,-1.0, 1.0,2.5,1.0},
@@ -40,10 +44,12 @@ advtrains.register_wagon("wagon_tank", "electric",{
 		box=8*6,
 	},
 }, "Industrial tank wagon", "advtrains_wagon_tank_inv.png")
-advtrains.register_wagon("wagon_wood", "electric",{
+advtrains.register_wagon("wagon_wood", {
 	mesh="advtrains_wagon_wood.b3d",
 	textures = {"advtrains_wagon_wood.png"},
 	seats = {},
+	drives_on={default=true},
+	max_speed=20,
 	visual_size = {x=1, y=1},
 	wagon_span=1.8,
 	collisionbox = {-1.0,-0.5,-1.0, 1.0,2.5,1.0},

advtrains_train_japan/init.lua

@@ -1,6 +1,8 @@
-advtrains.register_wagon("engine_japan", "electric",{
+advtrains.register_wagon("engine_japan", {
 	mesh="advtrains_engine_japan.b3d",
 	textures = {"advtrains_engine_japan.png"},
+	drives_on={default=true},
+	max_speed=20,
 	seats = {
 		{
 			name="Default Seat (driver stand)",
@@ -16,9 +18,11 @@ advtrains.register_wagon("engine_japan", "electric",{
 	drops={"default:steelblock 4"},
 }, "Japanese Train Engine", "advtrains_engine_japan_inv.png")
 
-advtrains.register_wagon("wagon_japan", "electric",{
+advtrains.register_wagon("wagon_japan", {
 	mesh="advtrains_wagon_japan.b3d",
 	textures = {"advtrains_wagon_japan.png"},
+	drives_on={default=true},
+	max_speed=20,
 	seats = {
 		{
 			name="Default Seat",

advtrains_train_steam/init.lua

@@ -1,7 +1,9 @@
-advtrains.register_wagon("newlocomotive", "steam",{
+advtrains.register_wagon("newlocomotive", {
 	mesh="advtrains_engine_steam.b3d",
 	textures = {"advtrains_newlocomotive.png"},
 	is_locomotive=true,
+	drives_on={default=true},
+	max_speed=10,
 	seats = {
 		{
 			name="Driver Stand (left)",
@@ -19,12 +21,12 @@ advtrains.register_wagon("newlocomotive", "steam",{
 	visual_size = {x=1, y=1},
 	wagon_span=1.85,
 	collisionbox = {-1.0,-0.5,-1.0, 1.0,2.5,1.0},
-	update_animation=function(self, velocity)
+	--update_animation=function(self, velocity)
 		--if self.old_anim_velocity~=advtrains.abs_ceil(velocity) then
-			self.object:set_animation({x=1,y=60}, 100)--math.floor(velocity))
+	--		self.object:set_animation({x=1,y=60}, 100)--math.floor(velocity))
 			--self.old_anim_velocity=advtrains.abs_ceil(velocity)
 		--end
-	end,
+	--end,
 	custom_on_activate = function(self, staticdata_table, dtime_s)
 		minetest.add_particlespawner({
 			amount = 10,
@@ -54,9 +56,11 @@ advtrains.register_wagon("newlocomotive", "steam",{
 	end,
 	drops={"default:steelblock 4"},
 }, "Steam Engine", "advtrains_newlocomotive_inv.png")
-advtrains.register_wagon("wagon_default", "steam",{
+advtrains.register_wagon("wagon_default", {
 	mesh="advtrains_wagon.b3d",
 	textures = {"advtrains_wagon.png"},
+	drives_on={default=true},
+	max_speed=10,
 	seats = {
 		{
 			name="Default Seat",
@@ -69,9 +73,11 @@ advtrains.register_wagon("wagon_default", "steam",{
 	collisionbox = {-1.0,-0.5,-1.0, 1.0,2.5,1.0},
 	drops={"default:steelblock 4"},
 }, "Passenger Wagon", "advtrains_wagon_inv.png")
-advtrains.register_wagon("wagon_box", "steam",{
+advtrains.register_wagon("wagon_box", {
 	mesh="advtrains_wagon.b3d",
 	textures = {"advtrains_wagon_box.png"},
+	drives_on={default=true},
+	max_speed=10,
 	seats = {},
 	visual_size = {x=1, y=1},
 	wagon_span=1.8,

advtrains_train_subway/init.lua

@@ -1,7 +1,9 @@
 
-advtrains.register_wagon("subway_wagon", "subway",{
+advtrains.register_wagon("subway_wagon", {
 	mesh="advtrains_subway_train.b3d",
 	textures = {"advtrains_subway_train.png"},
+	drives_on={default=true},
+	max_speed=15,
 	seats = {
 		{
 			name="Default Seat (driver stand)",