mods/xpanes/init.lua

   1
   2 local function is_pane(pos)
   3         return minetest.get_item_group(minetest.get_node(pos).name, "pane") > 0
   4 end
   5
   6 local function connects_dir(pos, name, dir)
   7         local aside = vector.add(pos, minetest.facedir_to_dir(dir))
   8         if is_pane(aside) then
   9                 return true
  10         end
  11
  12         local connects_to = minetest.registered_nodes[name].connects_to
  13         if not connects_to then
  14                 return false
  15         end
  16         local list = minetest.find_nodes_in_area(aside, aside, connects_to)
  17
  18         if #list > 0 then
  19                 return true
  20         end
  21
  22         return false
  23 end
  24
  25 local function swap(pos, node, name, param2)
  26         if node.name == name and node.param2 == param2 then
  27                 return
  28         end
  29
  30         minetest.set_node(pos, {name = name, param2 = param2})
  31 end
  32
  33 local function update_pane(pos)
  34         if not is_pane(pos) then
  35                 return
  36         end
  37         local node = minetest.get_node(pos)
  38         local name = node.name
  39         if name:sub(-5) == "_flat" then
  40                 name = name:sub(1, -6)
  41         end
  42
  43         local any = node.param2
  44         local c = {}
  45         local count = 0
  46         for dir = 0, 3 do
  47                 c[dir] = connects_dir(pos, name, dir)
  48                 if c[dir] then
  49                         any = dir
  50                         count = count + 1
  51                 end
  52         end
  53
  54         if count == 0 then
  55                 swap(pos, node, name .. "_flat", any)
  56         elseif count == 1 then
  57                 swap(pos, node, name .. "_flat", (any + 1) % 4)
  58         elseif count == 2 then
  59                 if (c[0] and c[2]) or (c[1] and c[3]) then
  60                         swap(pos, node, name .. "_flat", (any + 1) % 4)
  61                 else
  62                         swap(pos, node, name, 0)
  63                 end
  64         else
  65                 swap(pos, node, name, 0)
  66         end
  67 end
  68
  69 minetest.register_on_placenode(function(pos, node)
  70         if minetest.get_item_group(node, "pane") then
  71                 update_pane(pos)
  72         end
  73         for i = 0, 3 do
  74                 local dir = minetest.facedir_to_dir(i)
  75                 update_pane(vector.add(pos, dir))
  76         end
  77 end)
  78
  79 minetest.register_on_dignode(function(pos)
  80         for i = 0, 3 do
  81                 local dir = minetest.facedir_to_dir(i)
  82                 update_pane(vector.add(pos, dir))
  83         end
  84 end)
  85
  86 xpanes = {}
  87 function xpanes.register_pane(name, def)
  88         for i = 1, 15 do
  89                 minetest.register_alias("xpanes:" .. name .. "_" .. i, "xpanes:" .. name .. "_flat")
  90         end
  91
  92         local flatgroups = table.copy(def.groups)
  93         flatgroups.pane = 1
  94         minetest.register_node(":xpanes:" .. name .. "_flat", {
  95                 description = def.description,
  96                 drawtype = "nodebox",
  97                 paramtype = "light",
  98                 is_ground_content = false,
  99                 sunlight_propagates = true,
 100                 inventory_image = def.inventory_image,
 101                 wield_image = def.wield_image,
 102                 paramtype2 = "facedir",
 103                 tiles = {def.textures[3], def.textures[3], def.textures[1]},
 104                 groups = flatgroups,
 105                 drop = "xpanes:" .. name .. "_flat",
 106                 sounds = def.sounds,
 107                 node_box = {
 108                         type = "fixed",
 109                         fixed = {{-1/2, -1/2, -1/32, 1/2, 1/2, 1/32}},
 110                 },
 111                 selection_box = {
 112                         type = "fixed",
 113                         fixed = {{-1/2, -1/2, -1/32, 1/2, 1/2, 1/32}},
 114                 },
 115                 connect_sides = { "left", "right" },
 116         })
 117
 118         local groups = table.copy(def.groups)
 119         groups.pane = 1
 120         groups.not_in_creative_inventory = 1
 121         minetest.register_node(":xpanes:" .. name, {
 122                 drawtype = "nodebox",
 123                 paramtype = "light",
 124                 is_ground_content = false,
 125                 sunlight_propagates = true,
 126                 description = def.description,
 127                 tiles = {def.textures[3], def.textures[3], def.textures[1]},
 128                 groups = groups,
 129                 drop = "xpanes:" .. name .. "_flat",
 130                 sounds = def.sounds,
 131                 node_box = {
 132                         type = "connected",
 133                         fixed = {{-1/32, -1/2, -1/32, 1/32, 1/2, 1/32}},
 134                         connect_front = {{-1/32, -1/2, -1/2, 1/32, 1/2, -1/32}},
 135                         connect_left = {{-1/2, -1/2, -1/32, -1/32, 1/2, 1/32}},
 136                         connect_back = {{-1/32, -1/2, 1/32, 1/32, 1/2, 1/2}},
 137                         connect_right = {{1/32, -1/2, -1/32, 1/2, 1/2, 1/32}},
 138                 },
 139                 connects_to = {"group:pane", "group:stone", "group:glass", "group:wood", "group:tree"},
 140         })
 141
 142         minetest.register_craft({
 143                 output = "xpanes:" .. name .. "_flat 16",
 144                 recipe = def.recipe
 145         })
 146 end
 147
 148 xpanes.register_pane("pane", {
 149         description = "Glass Pane",
 150         textures = {"default_glass.png","xpanes_pane_half.png","xpanes_white.png"},
 151         inventory_image = "default_glass.png",
 152         wield_image = "default_glass.png",
 153         sounds = default.node_sound_glass_defaults(),
 154         groups = {snappy=2, cracky=3, oddly_breakable_by_hand=3},
 155         recipe = {
 156                 {"default:glass", "default:glass", "default:glass"},
 157                 {"default:glass", "default:glass", "default:glass"}
 158         }
 159 })
 160
 161 xpanes.register_pane("bar", {
 162         description = "Iron bar",
 163         textures = {"xpanes_bar.png","xpanes_bar.png","xpanes_bar_top.png"},
 164         inventory_image = "xpanes_bar.png",
 165         wield_image = "xpanes_bar.png",
 166         groups = {cracky=2},
 167         sounds = default.node_sound_metal_defaults(),
 168         recipe = {
 169                 {"default:steel_ingot", "default:steel_ingot", "default:steel_ingot"},
 170                 {"default:steel_ingot", "default:steel_ingot", "default:steel_ingot"}
 171         }
 172 })
 173
 174 minetest.register_lbm({
 175         name = "xpanes:gen2",
 176         nodenames = {"group:pane"},
 177         action = function(pos, node)
 178                 update_pane(pos)
 179                 for i = 0, 3 do
 180                         local dir = minetest.facedir_to_dir(i)
 181                         update_pane(vector.add(pos, dir))
 182                 end
 183         end
 184 })