first commit; test version
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Sokomine
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README.md
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README.md
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Experimental snow for stairs, slabs and nodeboxes (to a degree).
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Due to the very nature of nodes in Minetest, the snow cannot
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handle all situations. Moresnow is made for roofs (which do look
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better with a snow cover in winter), slabs, fences etc.
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init.lua
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init.lua
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moresnow = {}
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-- the nodebox for this snow node lies one node DEEPER than the node the snow is in;
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-- thus, nodebox-like nodes covered by snow may look less strange
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minetest.register_node("moresnow:snow_top", {
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description = "Snow",
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tiles = {"default_snow.png"},
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inventory_image = "default_snowball.png",
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wield_image = "default_snowball.png",
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is_ground_content = true,
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paramtype = "light",
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buildable_to = true,
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leveled = 7,
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drawtype = "nodebox",
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freezemelt = "default:water_flowing",
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node_box = {
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-- leveled would not work well in this situation
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type = "fixed",
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fixed = {
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{-0.5, -1.5, -0.5, 0.5, -1.5+2/16, 0.5},
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},
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},
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drop = "default:snow",
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groups = {crumbly=3,falling_node=1, melts=1, float=1},
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sounds = default.node_sound_dirt_defaults({
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footstep = {name="default_snow_footstep", gain=0.25},
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dug = {name="default_snow_footstep", gain=0.75},
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}),
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})
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minetest.register_node("moresnow:snow_stair_top", {
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description = "Snow",
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-- tiles = {"default_snow.png","default_snow.png","default_ice.png","default_snow.png"},
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tiles = {"default_snow.png"},
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inventory_image = "default_snowball.png",
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wield_image = "default_snowball.png",
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is_ground_content = true,
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paramtype = "light",
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paramtype2 = "facedir",
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buildable_to = true,
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leveled = 7,
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drawtype = "nodebox",
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freezemelt = "default:water_flowing",
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node_box = {
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type = "fixed",
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fixed = {
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{-0.5, -1.0, -0.5, 0.5, -1.0+2/16, 0},
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{-0.5, -0.5, 0, 0.5, -0.5+2/16, 0.5},
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{-0.5, -1.0+2/16, 0-1/32, 0.5, -0.5, 0 },
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{-0.5, -1.5, -0.5-1/32, 0.5, -1.0, -0.5},
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},
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},
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drop = "default:snow",
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groups = {crumbly=3,falling_node=1, melts=1, float=1},
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sounds = default.node_sound_dirt_defaults({
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footstep = {name="default_snow_footstep", gain=0.25},
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dug = {name="default_snow_footstep", gain=0.75},
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}),
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})
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minetest.register_node("moresnow:snow_slab_top", {
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description = "Snow",
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-- tiles = {"default_snow.png","default_snow.png","default_ice.png","default_snow.png"},
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tiles = {"default_snow.png"},
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inventory_image = "default_snowball.png",
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wield_image = "default_snowball.png",
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is_ground_content = true,
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paramtype = "light",
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paramtype2 = "facedir",
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buildable_to = true,
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leveled = 7,
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drawtype = "nodebox",
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freezemelt = "default:water_flowing",
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node_box = {
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type = "fixed",
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fixed = {
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{-0.5, -1.0, -0.5, 0.5, -1.0+2/16, 0.5},
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},
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},
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drop = "default:snow",
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groups = {crumbly=3,falling_node=1, melts=1, float=1},
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sounds = default.node_sound_dirt_defaults({
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footstep = {name="default_snow_footstep", gain=0.25},
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dug = {name="default_snow_footstep", gain=0.75},
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}),
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})
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-- find out which nodes are stairs and which are slabs (those are handled diffrently by our snow here);
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-- this is necessary in order to determine which shape the snow on top of the node will take
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-- (of course this only works for a few shapes and does not even take rotation into consideration)
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moresnow.snow_cover = {};
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-- identify stairs and slabs (roughly!) by their nodeboxes
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moresnow.identify_stairs_and_slabs = function()
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local c_snow_stair = minetest.get_content_id( 'moresnow:snow_stair_top' );
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local c_snow_slab = minetest.get_content_id( 'moresnow:snow_slab_top' );
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local c_snow_top = minetest.get_content_id( 'moresnow:snow_top' );
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local c_snow = minetest.get_content_id( 'default:snow' );
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for n,v in pairs( minetest.registered_nodes ) do
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local id = minetest.get_content_id( n );
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if( v and v.drawtype and v.drawtype == 'nodebox' and v.node_box
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and v.node_box.type and v.node_box.type=='fixed'
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and v.node_box.fixed ) then
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local nb = v.node_box.fixed;
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-- might be a slab (or something which has a sufficiently similar surface compared to a slab)
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if( ( #nb == 1
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and math.max( nb[1][2], nb[1][5])==0
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and math.abs( nb[1][4] - nb[1][1] ) >= 0.9
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and math.abs( nb[1][6] - nb[1][3] ) >= 0.9 )
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or ( type( nb[1] )~='table'
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and #nb == 6
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and math.max( nb[2], nb[5] )==0
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and math.abs( nb[4]-nb[1] ) >= 0.9
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and math.abs( nb[6]-nb[3] ) >= 0.9 )) then
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moresnow.snow_cover[ id ] = c_snow_slab;
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-- might be a stair
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elseif( #nb == 2 ) then
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local c = { math.min( nb[1][1], nb[1][4] ), math.min( nb[1][2], nb[1][5] ), math.min( nb[1][3], nb[1][4] ),
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math.max( nb[1][1], nb[1][4] ), math.max( nb[1][2], nb[1][5] ), math.max( nb[1][3], nb[1][4] ),
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math.min( nb[2][1], nb[2][4] ), math.min( nb[2][2], nb[2][5] ), math.min( nb[2][3], nb[2][4] ),
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math.max( nb[2][1], nb[2][4] ), math.max( nb[2][2], nb[2][5] ), math.max( nb[2][3], nb[2][4] ) };
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if( (( c[ 5]==0 and c[11]==0.5)
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or ( c[ 5]==0.5 and c[11]==0 ))
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and math.abs( c[ 4]-c[1]) >= 0.9
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and math.abs( c[10]-c[7]) >= 0.9 ) then
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moresnow.snow_cover[ id ] = c_snow_stair;
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else
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moresnow.snow_cover[ id ] = c_snow_top;
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end
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else
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moresnow.snow_cover[ id ] = c_snow_top;
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end
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-- add snow to the bottom of the node below; it will look acceptable, provided there is a solid node below
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elseif( v and v.drawtype
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and ( v.drawtype == 'fencelike' or v.drawtype=='plantlike'
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or v.drawtype == 'signlike' or v.drawtype=='torchlike' )) then
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moresnow.snow_cover[ id ] = c_snow_top;
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-- nodes where a snow cover would not fit (rails for example would get invisible)
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elseif( v and v.drawtype
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and ( v.drawtype == 'airlike' or v.drawtype=='liquid'
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or v.drawtype == 'raillike' or v.drawtype=='flowingliquid' )) then
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moresnow.snow_cover[ id ] = c_air;
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else
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moresnow.snow_cover[ id ] = c_snow;
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end
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end
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end
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-- search for stairs and slabs after all nodes have been generated
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minetest.after( 0, moresnow.identify_stairs_and_slabs );
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minetest.registered_nodes[ 'default:snow' ].on_construct = function( pos )
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local posb = {x=pos.x, y=pos.y-1, z=pos.z};
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local node = minetest.get_node( posb );
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if( node and node.name and minetest.registered_nodes[ node.name ] ) then
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local suggested = moresnow.snow_cover[ minetest.get_content_id( node.name )];
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-- if it is some solid node, keep the snow cover
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if( not( suggested )) then
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-- change the node below if it's some kind of dirt
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if( node.name == 'default:dirt_with_grass' or node.name == 'default:dirt' ) then
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minetest.set_node( posb, {name="default:dirt_with_snow"});
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end
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return;
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end
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suggested = minetest.get_name_from_content_id( suggested );
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-- snow_top is a special node suitable for nodeboxes; BUT: it only looks acceptable if the
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-- node below that nodebox/torch/fence/etc is a solid one
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if( suggested and suggested == 'moresnow:snow_top' ) then
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local node2 = minetest.get_node( {x=pos.x, y=pos.y-2, z=pos.z});
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-- no information about the node below available - we don't know what to do
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if( not( node ) or node.name == 'air' or node.name == 'ignore' ) then
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-- TODO: in such a case it would help to drop the node and let it fall until it hits something
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return;
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end
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local suggested2 = moresnow.snow_cover[ minetest.get_content_id( node2.name )];
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-- give up
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if( not( suggested2 )) then
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return;
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end
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suggested2 = minetest.get_name_from_content_id( suggested2 );
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-- if the node below this one can't handle a normal snow cover, we can't put a snow top on our node either
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if( suggested2 ~= 'default:snow' ) then
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return;
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end
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end
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if( suggested and suggested ~= 'default:snow') then
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minetest.set_node( pos, { name = suggested, param2 = node.param2} );
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end
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end
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end
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