Coupling: Add coupler type definitions

advtrains_train_industrial/init.lua

@@ -29,6 +29,8 @@ advtrains.register_wagon("engine_industrial", {
 		},
 	},
 	assign_to_seat_group = {"dstand"},
+	coupler_types_front = {chain=true},
+	coupler_types_back = {chain=true},
 	visual_size = {x=1, y=1},
 	wagon_span=2.6,
 	is_locomotive=true,
@@ -66,6 +68,8 @@ advtrains.register_wagon("engine_industrial_big", {
 		},
 	},
 	assign_to_seat_group = {"dstand"},
+	coupler_types_front = {chain=true},
+	coupler_types_back = {chain=true},
 	visual_size = {x=1, y=1},
 	wagon_span=4,
 	is_locomotive=true,
@@ -79,6 +83,8 @@ advtrains.register_wagon("wagon_tank", {
 	seats = {},
 	drives_on={default=true},
 	max_speed=20,
+	coupler_types_front = {chain=true},
+	coupler_types_back = {chain=true},
 	visual_size = {x=1, y=1},
 	wagon_span=2.2,
 	collisionbox = {-1.0,-0.5,-1.0, 1.0,2.5,1.0},
@@ -95,6 +101,8 @@ advtrains.register_wagon("wagon_wood", {
 	seats = {},
 	drives_on={default=true},
 	max_speed=20,
+	coupler_types_front = {chain=true},
+	coupler_types_back = {chain=true},
 	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

@@ -1,5 +1,8 @@
 local S = attrans
 
+-- note: scharfenberg coupler is defined in advtrains core
+advtrains.register_coupler_type("train_japan_interwagon", attrans("Japanese Train Inter-Wagon Connection"))
+
 advtrains.register_wagon("engine_japan", {
 	mesh="advtrains_engine_japan.b3d",
 	textures = {"advtrains_engine_japan.png"},
@@ -61,6 +64,8 @@ advtrains.register_wagon("engine_japan", {
 			[1]={frames={x=60, y=80}, time=1}
 		}
 	},
+	coupler_types_front = {scharfenberg=true},
+	coupler_types_back = {train_japan_interwagon=true},
 	door_entry={-1.7},
 	visual_size = {x=1, y=1},
 	wagon_span=2.5,
@@ -131,6 +136,8 @@ advtrains.register_wagon("wagon_japan", {
 			[1]={frames={x=60, y=80}, time=1}
 		}
 	},
+	coupler_types_front = {train_japan_interwagon=true},
+	coupler_types_back = {train_japan_interwagon=true},
 	door_entry={-1.7, 1.7},
 	visual_size = {x=1, y=1},
 	wagon_span=2.3,

advtrains_train_steam/init.lua

@@ -31,6 +31,8 @@ advtrains.register_wagon("newlocomotive", {
 		},
 	},
 	assign_to_seat_group = {"dstand"},
+	coupler_types_front = {chain=true},
+	coupler_types_back = {chain=true},
 	visual_size = {x=1, y=1},
 	wagon_span=2.3,
 	collisionbox = {-1.0,-0.5,-1.0, 1.0,2.5,1.0},
@@ -100,6 +102,8 @@ advtrains.register_wagon("detailed_steam_engine", {
 		},
 	},
 	assign_to_seat_group = {"dstand"},
+	coupler_types_front = {chain=true},
+	coupler_types_back = {chain=true},
 	visual_size = {x=1, y=1},
 	wagon_span=2.05,
 	collisionbox = {-1.0,-0.5,-1.0, 1.0,2.5,1.0},
@@ -193,6 +197,8 @@ advtrains.register_wagon("wagon_default", {
 	},
 
 	assign_to_seat_group = {"pass"},
+	coupler_types_front = {chain=true},
+	coupler_types_back = {chain=true},
 	visual_size = {x=1, y=1},
 	wagon_span=2.634,
 	collisionbox = {-1.0,-0.5,-1.0, 1.0,2.5,1.0},
@@ -206,6 +212,8 @@ advtrains.register_wagon("wagon_box", {
 	drives_on={default=true},
 	max_speed=10,
 	seats = {},
+	coupler_types_front = {chain=true},
+	coupler_types_back = {chain=true},
 	visual_size = {x=1, y=1},
 	wagon_span=2,
 	collisionbox = {-1.0,-0.5,-1.0, 1.0,2.5,1.0},

advtrains_train_subway/init.lua

@@ -51,6 +51,8 @@ advtrains.register_wagon("subway_wagon", {
 		},
 	},
 	assign_to_seat_group = {"pass", "dstand"},
+	coupler_types_front = {chain=true},
+	coupler_types_back = {chain=true},
 	doors={
 		open={
 			[-1]={frames={x=0, y=20}, time=1},