mods/xpanes/init.lua

   1 xpanes = {}
   2
   3 local function rshift(x, by)
   4         return math.floor(x / 2 ^ by)
   5 end
   6
   7 local directions = {
   8         {x = 1, y = 0, z = 0},
   9         {x = 0, y = 0, z = 1},
  10         {x = -1, y = 0, z = 0},
  11         {x = 0, y = 0, z = -1},
  12 }
  13
  14 local function update_pane(pos, name)
  15         if not minetest.get_node(pos).name:find("^xpanes:"..name) then
  16                 return
  17         end
  18         local sum = 0
  19         for i, dir in pairs(directions) do
  20                 local node = minetest.get_node({
  21                         x = pos.x + dir.x,
  22                         y = pos.y + dir.y,
  23                         z = pos.z + dir.z
  24                 })
  25                 local def = minetest.registered_nodes[node.name]
  26                 local pane_num = def and def.groups.pane or 0
  27                 if pane_num > 0 or not def or (def.walkable ~= false and
  28                                 def.drawtype ~= "nodebox") then
  29                         sum = sum + 2 ^ (i - 1)
  30                 end
  31         end
  32         if sum == 0 then
  33                 sum = 15
  34         end
  35         minetest.set_node(pos, {name = "xpanes:"..name.."_"..sum})
  36 end
  37
  38 local function update_nearby(pos, node)
  39         node = node or minetest.get_node(pos)
  40         if node.name:sub(1, 7) ~= "xpanes:" then return end
  41         local underscore_pos = node.name:find("_") or 0
  42         local name = node.name:sub(8, underscore_pos - 1)
  43         for i, dir in pairs(directions) do
  44                 update_pane({
  45                         x = pos.x + dir.x,
  46                         y = pos.y + dir.y,
  47                         z = pos.z + dir.z
  48                 }, name)
  49         end
  50 end
  51
  52 local half_boxes = {
  53         {0,     -0.5, -1/32, 0.5,  0.5, 1/32},
  54         {-1/32, -0.5, 0,     1/32, 0.5, 0.5},
  55         {-0.5,  -0.5, -1/32, 0,    0.5, 1/32},
  56         {-1/32, -0.5, -0.5,  1/32, 0.5, 0}
  57 }
  58
  59 local full_boxes = {
  60         {-0.5,  -0.5, -1/32, 0.5,  0.5, 1/32},
  61         {-1/32, -0.5, -0.5,  1/32, 0.5, 0.5}
  62 }
  63
  64 local sb_half_boxes = {
  65         {0,     -0.5, -0.06, 0.5,  0.5, 0.06},
  66         {-0.06, -0.5, 0,     0.06, 0.5, 0.5},
  67         {-0.5,  -0.5, -0.06, 0,    0.5, 0.06},
  68         {-0.06, -0.5, -0.5,  0.06, 0.5, 0}
  69 }
  70
  71 local sb_full_boxes = {
  72         {-0.5,  -0.5, -0.06, 0.5,  0.5, 0.06},
  73         {-0.06, -0.5, -0.5,  0.06, 0.5, 0.5}
  74 }
  75
  76 function xpanes.register_pane(name, def)
  77         for i = 1, 15 do
  78                 local need = {}
  79                 local cnt = 0
  80                 for j = 1, 4 do
  81                         if rshift(i, j - 1) % 2 == 1 then
  82                                 need[j] = true
  83                                 cnt = cnt + 1
  84                         end
  85                 end
  86                 local take = {}
  87                 local take2 = {}
  88                 if need[1] == true and need[3] == true then
  89                         need[1] = nil
  90                         need[3] = nil
  91                         table.insert(take, full_boxes[1])
  92                         table.insert(take2, sb_full_boxes[1])
  93                 end
  94                 if need[2] == true and need[4] == true then
  95                         need[2] = nil
  96                         need[4] = nil
  97                         table.insert(take, full_boxes[2])
  98                         table.insert(take2, sb_full_boxes[2])
  99                 end
 100                 for k in pairs(need) do
 101                         table.insert(take, half_boxes[k])
 102                         table.insert(take2, sb_half_boxes[k])
 103                 end
 104                 local texture = def.textures[1]
 105                 if cnt == 1 then
 106                         texture = def.textures[1].."^"..def.textures[2]
 107                 end
 108                 minetest.register_node("xpanes:"..name.."_"..i, {
 109                         drawtype = "nodebox",
 110                         tiles = {def.textures[3], def.textures[3], texture},
 111                         paramtype = "light",
 112                         groups = def.groups,
 113                         drop = "xpanes:"..name,
 114                         sounds = def.sounds,
 115                         node_box = {
 116                                 type = "fixed",
 117                                 fixed = take
 118                         },
 119                         selection_box = {
 120                                 type = "fixed",
 121                                 fixed = take2
 122                         }
 123                 })
 124         end
 125
 126         minetest.register_node("xpanes:"..name, def)
 127
 128         minetest.register_craft({
 129                 output = "xpanes:"..name.." 16",
 130                 recipe = def.recipe
 131         })
 132 end
 133
 134 minetest.register_on_placenode(update_nearby)
 135 minetest.register_on_dignode(update_nearby)
 136
 137 xpanes.register_pane("pane", {
 138         description = "Glass Pane",
 139         tiles = {"xpanes_space.png"},
 140         drawtype = "airlike",
 141         paramtype = "light",
 142         sunlight_propagates = true,
 143         walkable = false,
 144         pointable = false,
 145         diggable = false,
 146         buildable_to = true,
 147         air_equivalent = true,
 148         textures = {"default_glass.png","xpanes_pane_half.png","xpanes_white.png"},
 149         inventory_image = "default_glass.png",
 150         wield_image = "default_glass.png",
 151         sounds = default.node_sound_glass_defaults(),
 152         groups = {snappy=2, cracky=3, oddly_breakable_by_hand=3, pane=1},
 153         on_construct = function(pos)
 154                 update_pane(pos, "pane")
 155         end,
 156         recipe = {
 157                 {'default:glass', 'default:glass', 'default:glass'},
 158                 {'default:glass', 'default:glass', 'default:glass'}
 159         }
 160 })
 161
 162 xpanes.register_pane("bar", {
 163         description = "Iron bar",
 164         tiles = {"xpanes_space.png"},
 165         drawtype = "airlike",
 166         paramtype = "light",
 167         sunlight_propagates = true,
 168         walkable = false,
 169         pointable = false,
 170         diggable = false,
 171         buildable_to = true,
 172         air_equivalent = true,
 173         textures = {"xpanes_bar.png","xpanes_bar.png","xpanes_space.png"},
 174         inventory_image = "xpanes_bar.png",
 175         wield_image = "xpanes_bar.png",
 176         groups = {snappy=2, cracky=3, oddly_breakable_by_hand=3, pane=1},
 177         sounds = default.node_sound_stone_defaults(),
 178         on_construct = function(pos)
 179                 update_pane(pos, "bar")
 180         end,
 181         recipe = {
 182                 {'default:steel_ingot', 'default:steel_ingot', 'default:steel_ingot'},
 183                 {'default:steel_ingot', 'default:steel_ingot', 'default:steel_ingot'}
 184         }
 185 })
 186