392 lines
14 KiB
Lua
392 lines
14 KiB
Lua
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--[[
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Mod for Minetest that adds bridges (only one node wide!), slim handrails and a self-building-one-node-wide bridge.
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Copyright (C) 2013 Sokomine
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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--]]
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-- to make life a bit easier
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bild_pfad = "default_wood.png"; --"forniture_wood.png";
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bild_pfad_s1 = bild_pfad; --"forniture_wood_s1.png";
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bild_pfad_s2 = bild_pfad; --"forniture_wood_s2.png";
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--bild_pfad_s1 = "default_wood.png"; --"forniture_wood_s1.png";
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--bild_pfad_s2 = "default_wood.png"; --"forniture_wood_s2.png";
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leg_front_left = {-0.5,-0.5,-0.5, -0.4,0.5,-0.4};
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leg_front_right = { 0.4,-0.5,-0.5, 0.5,0.5,-0.4};
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leg_back_left = {-0.5,-0.5, 0.4, -0.4,0.5, 0.5};
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leg_back_right = { 0.4,-0.5, 0.4, 0.5,0.5, 0.5};
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bar_left = {-0.5, 0.35,-0.4,-0.4, 0.4, 0.4};
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bar_right = { 0.4, 0.35,-0.4, 0.5, 0.4, 0.4};
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bar_back = { 0.4, 0.35, 0.4,-0.5, 0.4, 0.5};
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bar_front = { 0.5, 0.35,-0.5,-0.5, 0.4,-0.4};
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bar_left_long = {-0.4, 0.35,-0.5,-0.5, 0.4, 0.5};
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bar_right_long = { 0.4, 0.35,-0.5, 0.5, 0.4, 0.5};
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groundplate_small = {-0.4,-0.45,-0.5, 0.4,-0.4,0.5};
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groundplate_corner = {-0.5,-0.45,-0.5, 0.5,-0.4,0.5}; -- slightly larger
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local STICK = "group:stick";
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local WOOD = "stairs:slab_wood";
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local BASIS = "bridges:bridge_basis";
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local RAIL = "bridges:handrail_middle";
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-- people who do not have vines have to replace "vines:vines" with something they do have and which they think might fit
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local VINES = "vines:vines"; -- useful for ropes
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local ALT = "group:leaves"; -- alternative for vines
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if( minetest.get_modpath( 'moon' ) or minetest.get_modpath( 'moonrealm') or minetest.get_modpath( 'moontest') ) then
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STICK = "group:stick";
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WOOD = "default:steel_ingot";
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VINES = "group:stone";
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ALT = "group:leaves"; -- alternative for vines
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bild_pfad = "default_steel_block.png"; --"forniture_wood.png";
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bild_pfad_s1 = bild_pfad; --"forniture_wood_s1.png";
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bild_pfad_s2 = bild_pfad; --"forniture_wood_s2.png";
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-- only if no moontest is installed
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elseif( minetest.get_modpath( 'moreblocks' )) then
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WOOD = 'moreblocks:slab_wood';
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end
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local MAX_BRIDGE_LENGTH = 27; -- this is how far the automatic bridge can extend
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local BRIDGE_PARTS = {
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-- name, description, node definition, crafting receipe, additional information for yield of receipe
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-- the groundplate - essential for bridge building
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{ "bridge_basis", "groundplate of a bridge", {
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groundplate_small, },
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{ { VINES, VINES, VINES },
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{ VINES, WOOD, VINES },
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{ VINES, VINES, VINES }
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}, " 2"}, -- yields 2 groundplates
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-- the handrail is a basic part out of which bridges and handrails for staircases can be constructed
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{ "handrail_middle", "handrail for bridges and staircases", {
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bar_front },
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{ { "", "", "" },
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{ "", BASIS, "" },
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{ "", "", "" }
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}, " 4"}, -- one groundplate yiels 4 handrails
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-- bridges
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{ "bridge_small", "small bridge", { -- TODO: slim legs?
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leg_front_left,
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leg_front_right,
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leg_back_left,
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leg_back_right,
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bar_right,
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bar_left,
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groundplate_small, },
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{ { STICK, "", STICK },
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{ RAIL, BASIS, RAIL },
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{ STICK, "", STICK }
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}, "" },
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{ "bridge_middle", "middle of a bridge", {
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bar_right_long,
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bar_left_long,
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groundplate_small, },
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{ { "", "", "" },
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{ RAIL, BASIS, RAIL },
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{ "", "", "" }
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}, "" },
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{ "bridge_corner", "corner of a bridge", {
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leg_front_left,
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leg_front_right,
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leg_back_left,
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leg_back_right,
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bar_right,
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bar_back,
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groundplate_corner, },
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{ { STICK, RAIL, STICK },
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{ "", BASIS, RAIL },
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{ STICK, "", STICK }
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}, "" },
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{ "bridge_t", "T junction of a bridge", {
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leg_front_left,
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leg_front_right,
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leg_back_left,
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leg_back_right,
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bar_back,
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groundplate_corner, },
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{ { STICK, RAIL, STICK },
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{ "", BASIS, "" },
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{ STICK, "", STICK }
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}, "" },
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{ "bridge_end", "end of a bridge", {
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leg_front_left,
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leg_front_right,
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leg_back_left,
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leg_back_right,
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bar_left,
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bar_right,
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bar_back,
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groundplate_corner, },
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{ { STICK, RAIL, STICK },
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{ RAIL, BASIS, RAIL },
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{ STICK, "", STICK }
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}, "" },
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-- handrails for the top of starcaises so that people won't fall down
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{ "handrail_top", "handrail for staircases, one side closed", {
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leg_front_left,
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leg_front_right,
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bar_front, },
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{ { "", "", "" },
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{ "", "", "" },
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{ STICK, RAIL, STICK }
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}, "" },
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{ "handrail_corner", "handrail for staircases, two sides closed", {
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leg_front_left,
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leg_front_right,
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bar_front,
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bar_left },
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{ { STICK, "", "" },
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{ RAIL, "", "" },
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{ STICK, RAIL, STICK }
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}, "" },
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{ "handrail_closed", "handrail for staircases, three sides closed", {
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leg_front_left,
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leg_front_right,
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bar_front,
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bar_right,
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bar_left },
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{ { STICK, RAIL, STICK },
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{ RAIL, "", "" },
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{ STICK, RAIL, STICK }
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}, "" },
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}
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for i in ipairs( BRIDGE_PARTS ) do
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minetest.register_node("bridges:"..BRIDGE_PARTS[i][1],
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{
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description = BRIDGE_PARTS[i][2],
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tiles = {
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bild_pfad,
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bild_pfad,
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bild_pfad_s1,
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bild_pfad_s1,
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bild_pfad_s2,
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bild_pfad_s2,
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},
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drawtype = "nodebox",
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sunlight_propagates = true,
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paramtype = 'light',
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paramtype2 = "facedir",
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node_box = {
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type = "fixed",
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fixed = BRIDGE_PARTS[i][3],
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},
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selection_box = {
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type = "fixed",
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fixed = {-0.5,-0.5,-0.5, 0.5, 0.5, 0.5},
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},
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-- flammable so that it can be burned if no longer needed
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groups = {snappy=2,choppy=2,oddly_breakable_by_hand=2,flammable=3},
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});
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minetest.register_craft({
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output = "bridges:"..BRIDGE_PARTS[i][1]..BRIDGE_PARTS[i][5],
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recipe = BRIDGE_PARTS[i][4],
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});
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end
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-- alternate receipe for the bridge basis
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minetest.register_craft({
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output = "bridges:bridge_basis 2",
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recipe = { { ALT, ALT, ALT },
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{ ALT, WOOD, ALT },
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{ ALT, ALT, ALT },
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},
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});
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-- a bridge with covers 3 nodes in size
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minetest.register_node("bridges:bridge_large",
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{ description = 'large bridge',
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tiles = {
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bild_pfad,
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bild_pfad,
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bild_pfad_s1,
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bild_pfad_s1,
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bild_pfad_s2,
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bild_pfad_s2,
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},
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drawtype = "nodebox",
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sunlight_propagates = true,
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paramtype = 'light',
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paramtype2 = "facedir",
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node_box = {
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type = "fixed",
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fixed = {
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-- the large bridge covers 3 nodes
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{-0.5,-0.5,-0.7, -0.4,0.5,-0.6},
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{ 0.4,-0.5,-0.7, 0.5,0.5,-0.6},
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{-0.5, 0.35,-1.5, -0.4,0.4, 1.5},
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{-0.5,-0.5, 0.6, -0.4,0.5, 0.7},
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{ 0.4,-0.5, 0.6, 0.5,0.5, 0.7},
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{ 0.4, 0.35,-1.5, 0.5,0.4, 1.5},
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{-0.4,-0.45,-1.5, 0.4,-0.4,1.5},
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}
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},
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selection_box = {
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type = "fixed",
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fixed = {-0.5,-0.5,-1.5, 0.5,0.5, 1.5},
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},
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groups = {snappy=2,choppy=2,oddly_breakable_by_hand=2,flammable=2}
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})
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minetest.register_craft({
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output = "bridges:bridge_large",
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recipe = { { "", "bridges:bridge_middle", "" },
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{ "", "bridges:bridge_small", "" },
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{ "", "bridges:bridge_middle", "" },
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} });
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-- special: self-building automatic bridge
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minetest.register_node("bridges:bridge_auto", {
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description = "self building bridge",
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tiles = { "default_chest_top.png" }, -- looks from all sides like the top of a chest
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drawtype = "cube",
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is_ground_content = true,
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groups = {snappy=2,choppy=2,oddly_breakable_by_hand=2,flammable=3},
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drop = "", -- all leftover parts are in the "chest"
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on_construct = function(pos)
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local meta = minetest.env:get_meta(pos);
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meta:set_string("formspec",
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"invsize[8,9;]"..
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"list[current_name;main;0,0;8,4;]"..
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"list[current_player;main;0,5;8,4;]")
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meta:set_string("infotext", "Automatic bridge building set - leftover parts")
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local inv = meta:get_inventory();
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inv:set_size("main", 8*4);
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end,
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can_dig = function(pos,player)
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local meta = minetest.env:get_meta(pos);
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local inv = meta:get_inventory();
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return inv:is_empty("main");
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end,
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after_place_node = function(pos, placer)
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local n;
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local x_dir;
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local z_dir;
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local p;
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local n;
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-- the bridge ought to unfold in the direction the player is looking
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local dir = placer:get_look_dir();
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local fdir = minetest.dir_to_facedir(dir);
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-- the player is looking more in x- than in z-direction
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if( math.abs( dir.x ) > math.abs( dir.z )) then
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z_dir = 0;
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if( dir.x > 0 ) then
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x_dir = 1;
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else
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x_dir = -1;
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end
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else
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x_dir = 0;
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if( dir.z > 0 ) then
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z_dir = 1;
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else
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z_dir = -1;
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end
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end
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-- print ("x_dir: "..tostring( x_dir ).." z_dir: "..tostring( z_dir ));
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-- we have determined the direction in which the bridge may extend - now lets look how far it can go
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local i=1;
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-- how many parts of the bridge remain?
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local rem_small = math.floor(MAX_BRIDGE_LENGTH/3);
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local rem_middle = MAX_BRIDGE_LENGTH-rem_small;
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-- extend max. MAX_BRIDGE_LENGTH nodes wide and only if the node needs a bridge (i.e. consists of air)
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while( i < MAX_BRIDGE_LENGTH ) do
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-- is there space for a bridge?
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p = {x=pos.x+(x_dir*i), y=pos.y, z=pos.z+(z_dir*i)};
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n = minetest.env:get_node(p);
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if( n == nil or (n.name ~= "air" and n.name ~= 'moonrealm:vacuum' and n.name ~= 'moonrealm:air' and n.name ~= 'moontest:vacuum' and n.name ~= 'moontest:air')) then
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i = MAX_BRIDGE_LENGTH+1; -- end
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-- print("At length "..tostring(i)..": node at target position not air; no place for bridge: "..tostring(n.name));
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else
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-- one small bridge is followed by two middle parts
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if( i%3 == 1 ) then
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minetest.env:add_node(p, {name="bridges:bridge_small", param1=0, param2=fdir});
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rem_small = rem_small - 1; -- one small bridge used
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-- print("Placing small bridge at dist "..tostring(i));
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else
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minetest.env:add_node(p, {name="bridges:bridge_middle", param1=0, param2=fdir});
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rem_middle = rem_middle -1; -- one middle part used
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-- print("Placing middle bridge at dist "..tostring(i));
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end
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i = i+1;
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end
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end
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-- do we have to give any leftover parts back?
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local meta = minetest.env:get_meta(pos);
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local inv = meta:get_inventory();
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if( rem_small > 0 ) then
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inv:add_item( "main", "bridges:bridge_small "..tostring( rem_small ));
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end
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if( rem_middle > 0 ) then
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inv:add_item( "main", "bridges:bridge_middle "..tostring( rem_middle ));
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end
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end,
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})
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minetest.register_craft({
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output = "bridges:bridge_auto",
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recipe = { { "bridges:bridge_large", "bridges:bridge_large", "bridges:bridge_large" },
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{ "bridges:bridge_large", "bridges:bridge_large", "bridges:bridge_large" },
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{ "bridges:bridge_large", "bridges:bridge_large", "bridges:bridge_large" },
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} });
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