WIP - Support [road_cost] in [passage]

data/lua/cave_map_generator.lua

@@ -21,7 +21,7 @@ function callbacks.generate_map(params)
 		end
 	end
 
-	local function clear_tile(x, y)
+	local function clear_tile(x, y, terrain_clear)
 		if not map:on_board(x,y) then
 			return
 		end
@@ -32,10 +32,43 @@ function callbacks.generate_map(params)
 		if r <= params.village_density then
 			map:set_tile(x, y, helper.rand(params.terrain_village))
 		else
-			map:set_tile(x, y, helper.rand(params.terrain_clear))
+			map:set_tile(x, y, helper.rand(terrain_clear or params.terrain_clear))
 		end
 	end
 
+	local function place_road(to_x, to_y, from_x, from_y, road_ops, terrain_clear)
+		if not map:on_board(to_x, to_y) then
+			return
+		end
+		local tile_op = road_ops[map:get_tile(to_x, to_y)]
+		-- These should use map:set_tile rather than clear_tile, but that doesn't work for some reason...
+		if tile_op then
+			if tile_op.convert_to_bridge and from_x and from_y then
+				local bridges = {}
+				for elem in tile_op.convert_to_bridge:gmatch("[^%s,][^,]*") do
+					table.insert(bridges, elem)
+				end
+				local dir = wesnoth.map_location.get_relative_dir(from_x, from_y, to_x, to_y)
+				if dir == 'n' or dir == 's' then
+					clear_tile(to_x, to_y, bridges[0])
+				elseif dir == 'sw' or dir == 'ne' then
+					clear_tile(to_x, to_y, bridges[1])
+				elseif dir == 'se' or dir == 'nw' then
+					clear_tile(to_x, to_y, bridges[2])
+				end
+				return
+			end
+			if tile_op.convert_to then
+				clear_tile(to_x, to_y, tile_op.convert_to)
+				return
+			end
+		end
+		if map:get_tile(to_x, to_y) == params.terrain_castle or map:get_tile(to_x, to_y) == params.terrain_keep then
+			return
+		end
+		clear_tile(to_x, to_y, terrain_clear)
+	end
+
 	local chambers = {}
 	local chambers_by_id = {}
 	local passages = {}
@@ -68,17 +101,25 @@ function callbacks.generate_map(params)
 			locs_set = locs_set,
 			id = id,
 			items = items,
+			data = chamber,
 		})
 		chambers_by_id[id] = chambers[#chambers]
 		for passage in helper.child_range(chamber, "passage") do
 			local dst = chambers_by_id[passage.destination]
 			if dst ~= nil then
+				local road_costs, road_ops = {}, {}
+				for road in helper.child_range(passage, "road_cost") do
+					road_costs[road.terrain] = road.cost
+					road_ops[road.terrain] = road
+				end
 				table.insert(passages, {
 					start_x = x,
 					start_y = y,
 					dest_x = dst.center_x,
 					dest_y = dst.center_y,
 					data = passage,
+					costs = road_costs,
+					roads = road_ops,
 				})
 			end
 		end
@@ -88,7 +129,7 @@ function callbacks.generate_map(params)
 	for i,v in ipairs(chambers) do
 		local locs_list = {}
 		for x, y in v.locs_set:stable_iter() do
-			clear_tile(x, y)
+			clear_tile(x, y, v.data.terrain_clear)
 			if map:on_inner_board(x, y) then
 				table.insert(locs_list, {x,y})
 			end
@@ -120,8 +161,11 @@ function callbacks.generate_map(params)
 			local jagged = v.data.jagged or 0
 			local calc = function(x, y, current_cost)
 				local res = 1.0
-				if map:get_tile(x, y) == params.terrain_wall then
+				local tile = map:get_tile(x, y)
+				if tile == params.terrain_wall then
 					res = laziness
+				else
+					res = v.costs[tile] or 1.0
 				end
 				if windiness > 1 then
 					res = res * random(windiness)
@@ -132,8 +176,10 @@ function callbacks.generate_map(params)
 			for i, loc in ipairs(path) do
 				local locs_set = LS.create()
 				build_chamber(loc[1], loc[2], locs_set, width, jagged)
+				local prev_x, prev_y
 				for x,y in locs_set:stable_iter() do
-					clear_tile(x, y)
+					place_road(x, y, prev_x, prev_y, v.roads, v.data.terrain_clear)
+					prev_x, prev_y = x, y
 				end
 			end
 		end

data/multiplayer/scenarios/Random_Scenario_Cave.cfg

@@ -2,6 +2,30 @@
 
 #ifdef DEBUG
 
+#define ROAD_COSTS
+	[road_cost]
+		terrain=Rb^Uf
+		cost=5
+		convert_to=Ur
+	[/road_cost]
+	[road_cost]
+		terrain=Rb^Ii
+		cost=1
+		convert_to=Ur^Ii
+	[/road_cost]
+	[road_cost]
+		terrain=Uue
+		cost=10
+		convert_to=Ur
+	[/road_cost]
+	[road_cost]
+		terrain=Wwg
+		cost=50
+		convert_to_bridge=Wwg^Bw|,Wwg^Bw/,Wwg^Bw\
+		convert_to=Ur
+	[/road_cost]
+#enddef
+
 #define PLAYER_CHAMBER NUMBER X Y
 	[chamber]
 		id=player_{NUMBER}
@@ -24,7 +48,15 @@
 			windiness=3
 			laziness=2
 			jagged=3
+			width=3
+			place_villages=yes
+		[/passage]
+		[passage]
+			destination=central_chamber
+			windiness=2
+			jagged=2
 			width=2
+			{ROAD_COSTS}
 		[/passage]
 	[/chamber]
 #enddef
@@ -65,6 +97,14 @@
             size=20
             jagged=30
         [/chamber]
+        [chamber]
+            id=lake
+            x=14..26
+            y=14..26
+            size=5
+            jagged=12
+            terrain_clear=Wwg
+        [/chamber]
         {PLAYER_CHAMBER 1 3..10 3..10}
         {PLAYER_CHAMBER 2 30..37 30..37}
         {PLAYER_CHAMBER 3 3..10 30..37}