Village building and paths should not spawn on top of snowy trees

mods/MAPGEN/mcl_villages/buildings.lua

@@ -79,19 +79,27 @@ function settlements.create_site_plan(maxp, minp, pr)
 	local settlement_info = {}
 	local building_all_info
 	local possible_rotations = {"0", "90", "180", "270"}
+
 	-- find center of chunk
 	local center = {
 		x=math.floor((minp.x+maxp.x)/2),
 		y=maxp.y,
 		z=math.floor((minp.z+maxp.z)/2)
 	}
+
 	-- find center_surface of chunk
 	local center_surface , surface_material = settlements.find_surface(center, true)
 	local chunks = {}
 	chunks[mcl_vars.get_chunk_number(center)] = true
 
 	-- go build settlement around center
-	if not center_surface then return false end
+	if not center_surface then
+		minetest.log("action", "Cannot build village at: " .. minetest.pos_to_string(center))
+		return false
+	else
+		minetest.log("action", "Village built.")
+		--minetest.log("action", "Build village at: " .. minetest.pos_to_string(center) .. " with surface material: " .. surface_material)
+	end
 
 	-- initialize all settlement_info table
 	local count_buildings, number_of_buildings, number_built = settlements.initialize_settlement_info(pr)
@@ -190,6 +198,7 @@ local function construct_node(p1, p2, name)
 end
 
 local function spawn_iron_golem(pos)
+	--minetest.log("action", "Attempt to spawn iron golem.")
 	local p = minetest.find_node_near(pos,50,"mcl_core:grass_path")
 	if p then
 		local l=minetest.add_entity(p,"mobs_mc:iron_golem"):get_luaentity()
@@ -200,6 +209,7 @@ local function spawn_iron_golem(pos)
 end
 
 local function spawn_villagers(minp,maxp)
+	--minetest.log("action", "Attempt to spawn villagers.")
 	local beds=minetest.find_nodes_in_area(vector.offset(minp,-20,-20,-20),vector.offset(maxp,20,20,20),{"mcl_beds:bed_red_bottom"})
 	for _,bed in pairs(beds) do
 		local m = minetest.get_meta(bed)
@@ -235,23 +245,6 @@ end
 function settlements.place_schematics(settlement_info, pr)
 	local building_all_info
 
-	--attempt to place one belltower in the center of the village - this doesn't always work out great but it's a lot better than doing it first or last.
-	local belltower = table.remove(settlement_info,math.floor(#settlement_info/2))
-	if belltower then
-		mcl_structures.place_schematic(
-			vector.offset(belltower["pos"],0,0,0),
-			settlements.modpath.."/schematics/belltower.mts",
-			belltower["rotation"],
-			nil,
-			true,
-			nil,
-			function(p1, p2, size, rotation, pr)
-				spawn_iron_golem(p1)
-			end,
-			pr
-		)
-	end
-
 	for i, built_house in ipairs(settlement_info) do
 		local is_last = i == #settlement_info
 
@@ -262,6 +255,9 @@ function settlements.place_schematics(settlement_info, pr)
 			end
 		end
 
+
+
+
 		local pos = settlement_info[i]["pos"]
 		local rotation = settlement_info[i]["rotat"]
 		-- get building node material for better integration to surrounding
@@ -313,8 +309,11 @@ function settlements.place_schematics(settlement_info, pr)
 
 		-- format schematic string
 		local schematic = loadstring(schem_lua)()
+		
+		local is_belltower = building_all_info["name"] == "belltower"
+
 		-- build foundation for the building an make room above
-		-- place schematic
+
 		mcl_structures.place_schematic(
 			pos,
 			schematic,
@@ -323,8 +322,12 @@ function settlements.place_schematics(settlement_info, pr)
 			true,
 			nil,
 			function(p1, p2, size, rotation, pr)
+				if is_belltower then
+					spawn_iron_golem(p1)
+				else
 					init_nodes(p1, p2, size, rotation, pr)
 					spawn_villagers(p1,p2)
+				end
 			end,
 			pr
 		)

mods/MAPGEN/mcl_villages/utils.lua

@@ -40,23 +40,33 @@ function settlements.find_surface(pos, wait)
 	-- go through nodes an find surface
 	while cnt < cnt_max do
 		-- Check Surface_node and Node above
-		--
-		if settlements.surface_mat[surface_node.name] then
+		if surface_node and settlements.surface_mat[surface_node.name] then
 			local surface_node_plus_1 = get_node({ x=p6.x, y=p6.y+1, z=p6.z})
-			if surface_node_plus_1 and surface_node and
-				(string.find(surface_node_plus_1.name,"air") or
-				string.find(surface_node_plus_1.name,"snow") or
+
+			if surface_node_plus_1 then
+
+				local surface_node_minus_1 = get_node({ x=p6.x, y=p6.y-1, z=p6.z})
+				local is_leaf_below  = minetest.get_item_group(surface_node_minus_1, "leaves") ~= 0 or
+						string.find(surface_node_minus_1.name,"leaves")
+
+				if not is_leaf_below and ((string.find(surface_node_plus_1.name,"air") or
 					string.find(surface_node_plus_1.name,"fern") or
 					string.find(surface_node_plus_1.name,"flower") or
 					string.find(surface_node_plus_1.name,"bush") or
 					string.find(surface_node_plus_1.name,"tree") or
-				string.find(surface_node_plus_1.name,"grass"))
+					string.find(surface_node_plus_1.name,"grass")) or
+					string.find(surface_node_plus_1.name,"snow"))
 				then
-					settlements.debug("find_surface7: " ..surface_node.name.. " " .. surface_node_plus_1.name)
+					settlements.debug("find_surface success: " ..surface_node.name.. " " .. surface_node_plus_1.name)
+					settlements.debug("node below: " .. tostring(surface_node_minus_1.name))
+					settlements.debug("node below leaves group: " .. tostring(minetest.get_item_group(surface_node_minus_1, "leaves")))
 					return p6, surface_node.name
 				else
 					settlements.debug("find_surface2: wrong surface+1")
 				end
+			else
+				settlements.debug("find_surface8: missing node or plus_1")
+			end
 		else
 			settlements.debug("find_surface3: wrong surface "..surface_node.name.." at pos "..minetest.pos_to_string(p6))
 		end