added roof types

build_chest.lua

@@ -209,6 +209,7 @@ build_chest.get_replacement_list_formspec = function( pos, selected_row )
 	-- there may be wood types that only occour as stairs and/or slabs etc., without full blocks
 	local types_found_list_wood    = {};
 	local types_found_list_farming = {};
+	local types_found_list_roof    = {};
 
 	for i,v in ipairs( build_chest.building[ building_name ].statistic ) do
 		local name = build_chest.building[ building_name ].nodenames[ v[1]];	
@@ -255,6 +256,7 @@ build_chest.get_replacement_list_formspec = function( pos, selected_row )
 			
 			extra_buttons = build_chest.get_replacement_extra_buttons( 'wood',    name, types_found_list_wood,    'set_wood',    extra_buttons );
 			extra_buttons = build_chest.get_replacement_extra_buttons( 'farming', name, types_found_list_farming, 'set_farming', extra_buttons );
+			extra_buttons = build_chest.get_replacement_extra_buttons( 'roof',    name, types_found_list_farming, 'set_roof',    extra_buttons );
 
 			j=j+1;
 		end
@@ -925,6 +927,15 @@ build_chest.update_formspec = function( pos, page, player )
 			return;
 		end
 
+		local set_roof        = meta:get_string('set_roof' );
+		if( set_roof and set_roof ~= "" ) then
+			formspec = formspec..
+				"label[1,2.5;Select a roof type for the house:]"..
+				build_chest.get_group_list_formspec( pos, 'roof',    'roof_selection' );
+			meta:set_string('formspec', formspec );
+			return;
+		end
+
 		if( building_name and building_name ~= '' and start_pos and start_pos ~= '' and meta:get_string('replacements')) then
 			formspec = formspec..build_chest.get_replacement_list_formspec( pos );
 			meta:set_string('formspec', formspec );
@@ -1248,7 +1259,8 @@ build_chest.on_receive_fields = function(pos, formname, fields, player)
 		meta:set_string( 'current_path', minetest.serialize( current_path ));
 		meta:set_string( 'building_name', '');
 		meta:set_string( 'set_wood',      '');
-		meta:set_string( 'set_farming',     '');
+		meta:set_string( 'set_farming',   '');
+		meta:set_string( 'set_roof',      '');
 		meta:set_int(    'replace_row', 0 );
 		meta:set_int(    'page_nr',     0 );
 		build_chest.update_formspec( pos, 'main', player );
@@ -1303,24 +1315,31 @@ build_chest.on_receive_fields = function(pos, formname, fields, player)
 		build_chest.update_formspec( pos, 'main', player );
 
 
-	elseif( fields.wood_selection ) then
-		build_chest.apply_replacement_for_group( pos, meta, 'wood',    fields.wood_selection, 'set_wood' );
-		build_chest.update_formspec( pos, 'main', player );
-
-
 	elseif( fields.set_wood ) then
 		meta:set_string('set_wood', fields.set_wood );
 		build_chest.update_formspec( pos, 'main', player );
 
-
 	elseif( fields.set_farming ) then
 		meta:set_string('set_farming', fields.set_farming );
 		build_chest.update_formspec( pos, 'main', player );
 
+	elseif( fields.set_roof ) then
+		meta:set_string('set_roof',    fields.set_roof );
+		build_chest.update_formspec( pos, 'main', player );
+
+
+	elseif( fields.wood_selection ) then
+		build_chest.apply_replacement_for_group( pos, meta, 'wood',    fields.wood_selection,    'set_wood' );
+		build_chest.update_formspec( pos, 'main', player );
+
 	elseif( fields.farming_selection ) then
 		build_chest.apply_replacement_for_group( pos, meta, 'farming', fields.farming_selection, 'set_farming' );
 		build_chest.update_formspec( pos, 'main', player );
 
+	elseif( fields.roof_selection ) then
+		build_chest.apply_replacement_for_group( pos, meta, 'roof',    fields.roof_selection,    'set_roof' );
+		build_chest.update_formspec( pos, 'main', player );
+
 
 	elseif( fields.proceed_with_scaffolding ) then
 		local building_name = meta:get_string('building_name');

init.lua

@@ -47,6 +47,7 @@ replacements_group = {};
 dofile(mg_villages.modpath.."/replacements_wood.lua")
 dofile(mg_villages.modpath.."/replacements_realtest.lua")
 dofile(mg_villages.modpath.."/replacements_farming.lua")
+dofile(mg_villages.modpath.."/replacements_roof.lua")
 dofile(mg_villages.modpath.."/replacements.lua")
 
 -- multiple diffrent village types with their own sets of houses are supported

replacements_roof.lua

@@ -0,0 +1,110 @@
+                                
+replacements_group['roof'] = {}
+
+-- this contains a list of all found/available nodenames that may act as a replacement frming nodes
+replacements_group['roof'].found = {};
+-- contains a list of *all* known roof names - even of mods that may not be installed
+replacements_group['roof'].all   = {};
+
+-- contains information about how a particular node is called if a particular roof mod is used;
+replacements_group['roof'].data  = {};
+
+
+replacements_group['roof'].replace_material = function( replacements, old_material, new_material )
+
+	if(  not( old_material ) or not( replacements_group['roof'].data[ old_material ])
+	  or not( new_material ) or not( replacements_group['roof'].data[ new_material ])
+	  or old_material == new_material ) then
+		return replacements;
+	end
+
+	local old_nodes = replacements_group['roof'].data[ old_material ];
+	local new_nodes = replacements_group['roof'].data[ new_material ];
+	for i=1,#old_nodes do
+		local old = old_nodes[i];
+		local new = old;
+		if( i<=#new_nodes and new_nodes[i] and minetest.registered_nodes[ new_nodes[i]] ) then
+			new = new_nodes[i];
+			local found = false;
+			for i,v in ipairs(replacements) do
+				if( v and v[1]==old ) then
+					v[2] = new;
+					found = true;
+				end
+			end
+			if( not( found )) then
+				table.insert( replacements, { old, new });
+			end
+		end
+	end
+	return replacements;		
+end
+
+
+---------------------
+-- internal functions
+---------------------
+replacements_group['roof'].add_material = function( nodelist )
+
+	local is_loaded = false;
+	if(  minetest.registered_items[ nodelist[1] ] ) then
+		is_loaded = true;
+		table.insert( replacements_group['roof'].found, nodelist[1] );
+	end
+	table.insert( replacements_group['roof'].all, nodelist[1]);
+
+	replacements_group['roof'].data[ nodelist[1] ] = nodelist;
+end
+
+
+
+
+-- create a list of all available fruit types
+replacements_group['roof'].construct_roof_type_list = function()
+
+	-- roof from cottages
+	local roofs = {'straw', 'reet',  'wood', 'slate', 'red', 'brown', 'black'};
+	for i,v in ipairs( roofs ) do
+		replacements_group['roof'].add_material( {
+			'cottages:roof_connector_'..v,
+			'cottages:roof_flat_'..v,
+			'',  -- no full block available
+			'cottages:roof_'..v
+			} );
+	end
+
+	
+	-- from dryplants
+	roofs = {'reed', 'wetreed'};
+	for i,v in ipairs( roofs ) do
+		replacements_group['roof'].add_material( {
+			'dryplants:'..v..'_roof',
+			'dryplants:'..v..'_slab',
+			'dryplants:'..v,
+			'dryplants:'..v..'_roof',
+			'dryplants:'..v..'_roof_corner',
+			'dryplants:'..v..'_roof_corner_2'
+			} );
+	end
+	-- roof from homedecor
+	roofs = {'wood', 'terracootta', 'asphalt', 'glass'};
+	for i,v in ipairs( roofs ) do
+		replacements_group['roof'].add_material( {
+			'homedecor:shingle_side_'..v,
+			'homedecor:shingles_'..v,
+			'',
+			'homedecor:shingles_'..v,
+			'homedecor:shingle_inner_corner_'..v,
+			'homedecor:shingle_outer_corner_'..v,
+			} );
+	end
+
+	replacements_group['roof'].data[ 'homedecor:shingle_side_glass'  ][2] = 'homedecor:skylight';
+	replacements_group['roof'].data[ 'homedecor:shingle_side_glass'  ][4] = 'homedecor:skylight';
+	replacements_group['roof'].data[ 'homedecor:shingle_side_asphalt'][3] = 'streets:asphalt';
+
+	-- TODO: slopes from technic or other slopes mods?
+end
+
+-- create the list of known roof fruits
+replacements_group['roof'].construct_roof_type_list();