mods/wallet/init.lua

   1 local function rshift(x, by)
   2         return math.floor(x / 2 ^ by)
   3 end
   4
   5 local directions = {
   6         {x = 1, y = 0, z = 0},
   7         {x = 0, y = 0, z = 1},
   8         {x = -1, y = 0, z = 0},
   9         {x = 0, y = 0, z = -1},
  10         {x = 0, y = -1, z = 0},
  11 }
  12
  13 local function update_wall(pos)
  14         local thisnode = minetest.env:get_node(pos)
  15
  16         if thisnode.name:find("wallet:wall") ~= 1 and
  17                 thisnode.name:find("wallet:wallmossy") ~= 1 then
  18                 -- Not a wall
  19                 return
  20         end
  21
  22         -- Get the node's base name, including the underscore since we will need it
  23         local basename = thisnode.name:find("_")
  24         if basename == nil then -- New wall
  25                 basename = thisnode.name .. "_"
  26         else -- Already placed wall
  27                 basename = thisnode.name:sub(1, basename)
  28         end
  29
  30         local sum = 0
  31
  32         -- Neighbouring walkable nodes
  33         for i = 1, 4 do
  34                 local dir = directions[i]
  35                 local node = minetest.env:get_node({x = pos.x + dir.x, y = pos.y + dir.y, z = pos.z + dir.z})
  36                 if minetest.registered_nodes[node.name].walkable then
  37                         sum = sum + 2 ^ (i - 1)
  38                 end
  39         end
  40
  41         -- Torches or walkable nodes above the wall
  42         local upnode = minetest.env:get_node({x = pos.x, y = pos.y+1, z = pos.z})
  43         if sum == 5 or sum == 10 then
  44                 if minetest.registered_nodes[upnode.name].walkable or upnode.name == "torches:floor" then
  45                         sum = sum + 11
  46                 end
  47         end
  48
  49         --[[if sum == 0 then
  50                 sum = 15
  51         end]]
  52
  53         minetest.env:add_node(pos, {name = basename..sum})
  54 end
  55
  56 function update_wall_global(pos)
  57         for i = 1,5 do
  58                 local dir = directions[i]
  59                 update_wall({x = pos.x + dir.x, y = pos.y + dir.y, z = pos.z + dir.z})
  60         end
  61 end
  62
  63 local half_blocks = {
  64     {4/16, -0.5, -3/16, 0.5, 5/16, 3/16},
  65     {-3/16, -0.5, 4/16, 3/16, 5/16, 0.5},
  66     {-0.5, -0.5, -3/16, -4/16, 5/16, 3/16},
  67     {-3/16, -0.5, -0.5, 3/16, 5/16, -4/16}
  68 }
  69
  70 local pillar = {-4/16, -0.5, -4/16, 4/16, 0.5, 4/16}
  71
  72 local full_blocks = {
  73     {-0.5, -0.5, -3/16, 0.5, 5/16, 3/16},
  74     {-3/16, -0.5, -0.5, 3/16, 5/16, 0.5}
  75 }
  76
  77 local function register_wall(nodename, name, texture, invtex)
  78         for i = 0, 15 do
  79                 local need = {}
  80                 local need_pillar = false
  81                 for j = 1, 4 do
  82                         if rshift(i, j - 1) % 2 == 1 then
  83                                 need[j] = true
  84                         end
  85                 end
  86
  87                 local take = {}
  88                 if need[1] == true and need[3] == true then
  89                         need[1] = nil
  90                         need[3] = nil
  91                         table.insert(take, full_blocks[1])
  92                 end
  93                 if need[2] == true and need[4] == true then
  94                         need[2] = nil
  95                         need[4] = nil
  96                         table.insert(take, full_blocks[2])
  97                 end
  98                 for k in pairs(need) do
  99                         table.insert(take, half_blocks[k])
 100                         need_pillar = true
 101                 end
 102                 if i == 15 or i == 0 then need_pillar = true end
 103                 if need_pillar then table.insert(take, pillar) end
 104
 105                 minetest.register_node(nodename.."_"..i, {
 106                         collision_box = {
 107                                 type = 'fixed',
 108                                 fixed = {-4/16, -1, -4/16, 4/16, 1, 4/16}
 109                         },
 110                         drawtype = "nodebox",
 111                         tile_images = {texture},
 112                         paramtype = "light",
 113                         groups = {snappy=2,cracky=3,oddly_breakable_by_hand=3,fences=1},
 114                         drop = nodename,
 115                         node_box = {
 116                                 type = "fixed",
 117                                 fixed = take
 118                         },
 119                 })
 120         end
 121
 122         minetest.register_node(nodename.."_16", {
 123                 drawtype = "nodebox",
 124                 collision_box = {
 125                                 type = 'fixed',
 126                                 fixed = {-4/16, -1, -4/16, 4/16, 1, 4/16}
 127                 },
 128                 tile_images = {texture},
 129                 paramtype = "light",
 130                 groups = {snappy=2,cracky=3,oddly_breakable_by_hand=3,fences=1},
 131                 drop = nodename,
 132                 node_box = {
 133                         type = "fixed",
 134                         fixed = {pillar, full_blocks[1]}
 135                 },
 136         })
 137
 138         minetest.register_node(nodename.."_21", {
 139                 drawtype = "nodebox",
 140                 collision_box = {
 141                                 type = 'fixed',
 142                                 fixed = {-4/16, -1, -4/16, 4/16, 1, 4/16}
 143                 },
 144                 tile_images = {texture},
 145                 paramtype = "light",
 146                 groups = {snappy=2,cracky=3,oddly_breakable_by_hand=3,fences=1},
 147                 drop = nodename,
 148                 node_box = {
 149                         type = "fixed",
 150                         fixed = {pillar, full_blocks[2]}
 151                 },
 152         })
 153
 154         -- Inventory item
 155         minetest.register_node(nodename, {
 156                 description = name,
 157                 paramtype = "light",
 158                 tile_images = {texture},
 159                 inventory_image = invtex,
 160                 stack_max = 64,
 161                 drawtype = "nodebox",
 162                 node_box = {
 163                         type = "fixed",
 164                         fixed = pillar
 165                 },
 166                 collision_box = {
 167                                 type = 'fixed',
 168                                 fixed = {-4/16, -1, -4/16, 4/16, 1, 4/16}
 169                 },
 170                 collisionbox = {-0.2, 0, -0.2, 0.2, 1.4, 0.2},
 171                 on_construct = update_wall
 172         })
 173 end
 174
 175 -- Cobblestone wall
 176
 177 register_wall("wallet:wall", "Cobblestone Wall", "default_cobble.png", "cobblestone_wallet.png")
 178 minetest.register_craft({
 179         output = 'wallet:wall 6',
 180         recipe = {
 181                 {'default:cobble', 'default:cobble', 'default:cobble'},
 182                 {'default:cobble', 'default:cobble', 'default:cobble'}
 183         }
 184 })
 185
 186 -- Mossy wall
 187
 188 register_wall("wallet:wallmossy", "Mossy Cobblestone Wall", "default_mossycobble.png", "cobblestonemossy_wallet.png")
 189 minetest.register_craft({
 190         output = 'wallet:wallmossy 6',
 191         recipe = {
 192                 {'default:mossycobble', 'default:mossycobble', 'default:mossycobble'},
 193         {'default:mossycobble', 'default:mossycobble', 'default:mossycobble'}
 194         }
 195 })
 196
 197 minetest.register_on_placenode(update_wall_global)
 198 minetest.register_on_dignode(update_wall_global)