src/enchanting.lua

   1 screwdriver = screwdriver or {}
   2 local ceil, abs, random = math.ceil, math.abs, math.random
   3
   4 -- Cost in Mese crystal(s) for enchanting.
   5 local mese_cost = 1
   6
   7 -- Force of the enchantments.
   8 local enchanting = {
   9         uses     = 1.2,  -- Durability
  10         times    = 0.1,  -- Efficiency
  11         damages  = 1,    -- Sharpness
  12         strength = 1.2,  -- Armor strength (3d_armor only)
  13         speed    = 0.2,  -- Player speed (3d_armor only)
  14         jump     = 0.2   -- Player jumping (3d_armor only)
  15 }
  16
  17 local function cap(S) return S:gsub("^%l", string.upper) end
  18 local function to_percent(orig_value, final_value)
  19         return abs(ceil(((final_value - orig_value) / orig_value) * 100))
  20 end
  21
  22 function enchanting:get_tooltip(enchant, orig_caps, fleshy)
  23         local bonus = {durable=0, efficiency=0, damages=0}
  24         if orig_caps then
  25                 bonus.durable = to_percent(orig_caps.uses, orig_caps.uses * enchanting.uses)
  26                 local sum_caps_times = 0
  27                 for i=1, #orig_caps.times do
  28                         sum_caps_times = sum_caps_times + orig_caps.times[i]
  29                 end
  30                 local average_caps_time = sum_caps_times / #orig_caps.times
  31                 bonus.efficiency = to_percent(average_caps_time, average_caps_time -
  32                                               enchanting.times)
  33         end
  34         if fleshy then
  35                 bonus.damages = to_percent(fleshy, fleshy + enchanting.damages)
  36         end
  37
  38         local specs = { -- not finished, to complete
  39                 durable = {"#00baff", " (+"..bonus.durable.."%)"},
  40                 fast    = {"#74ff49", " (+"..bonus.efficiency.."%)"},
  41                 sharp   = {"#ffff00", " (+"..bonus.damages.."%)"},
  42                 strong  = {"#ff3d3d", ""},
  43                 speed   = {"#fd5eff", ""}
  44         }
  45         return minetest.colorize and minetest.colorize(specs[enchant][1],
  46                         "\n"..cap(enchant)..specs[enchant][2]) or
  47                         "\n"..cap(enchant)..specs[enchant][2]
  48 end
  49
  50 local enchant_buttons = {
  51         [[ image_button[3.9,0.85;4,0.92;bg_btn.png;fast;Efficiency]
  52         image_button[3.9,1.77;4,1.12;bg_btn.png;durable;Durability] ]],
  53         "image_button[3.9,0.85;4,0.92;bg_btn.png;strong;Strength]",
  54         "image_button[3.9,2.9;4,0.92;bg_btn.png;sharp;Sharpness]",
  55         [[ image_button[3.9,0.85;4,0.92;bg_btn.png;strong;Strength]
  56         image_button[3.9,1.77;4,1.12;bg_btn.png;speed;Speed] ]]
  57 }
  58
  59 function enchanting.formspec(pos, num)
  60         local meta = minetest.get_meta(pos)
  61         local formspec = [[ size[9,9;]
  62                         bgcolor[#080808BB;true]
  63                         background[0,0;9,9;ench_ui.png]
  64                         list[context;tool;0.9,2.9;1,1;]
  65                         list[context;mese;2,2.9;1,1;]
  66                         list[current_player;main;0.5,4.5;8,4;]
  67                         listring[current_player;main]
  68                         listring[context;tool]
  69                         listring[current_player;main]
  70                         listring[context;mese]
  71                         image[2,2.9;1,1;mese_layout.png]
  72                         tooltip[sharp;Your weapon inflicts more damages]
  73                         tooltip[durable;Your tool last longer]
  74                         tooltip[fast;Your tool digs faster]
  75                         tooltip[strong;Your armor is more resistant]
  76                         tooltip[speed;Your speed is increased] ]]
  77                         ..default.gui_slots..default.get_hotbar_bg(0.5,4.5)
  78
  79         formspec = formspec..(enchant_buttons[num] or "")
  80         meta:set_string("formspec", formspec)
  81 end
  82
  83 function enchanting.on_put(pos, listname, _, stack)
  84         if listname == "tool" then
  85                 local stackname = stack:get_name()
  86                 local tool_groups = {
  87                         "axe, pick, shovel",
  88                         "chestplate, leggings, helmet",
  89                         "sword", "boots"
  90                 }
  91
  92                 for idx, tools in pairs(tool_groups) do
  93                         if tools:find(stackname:match(":(%w+)")) then
  94                                 enchanting.formspec(pos, idx)
  95                         end
  96                 end
  97         end
  98 end
  99
 100 function enchanting.fields(pos, _, fields, sender)
 101         if not next(fields) or fields.quit then return end
 102         local inv = minetest.get_meta(pos):get_inventory()
 103         local tool = inv:get_stack("tool", 1)
 104         local mese = inv:get_stack("mese", 1)
 105         local orig_wear = tool:get_wear()
 106         local mod, name = tool:get_name():match("(.*):(.*)")
 107         local enchanted_tool = (mod or "")..":enchanted_"..(name or "").."_"..next(fields)
 108
 109         if mese:get_count() >= mese_cost and minetest.registered_tools[enchanted_tool] then
 110                 minetest.sound_play("xdecor_enchanting", {
 111                         to_player=sender:get_player_name(), gain=0.8})
 112                 tool:replace(enchanted_tool)
 113                 tool:add_wear(orig_wear)
 114                 mese:take_item(mese_cost)
 115                 inv:set_stack("mese", 1, mese)
 116                 inv:set_stack("tool", 1, tool)
 117         end
 118 end
 119
 120 function enchanting.dig(pos)
 121         local inv = minetest.get_meta(pos):get_inventory()
 122         return inv:is_empty("tool") and inv:is_empty("mese")
 123 end
 124
 125 local function allowed(tool)
 126         if not tool then return false end
 127         for item in pairs(minetest.registered_tools) do
 128                 if item:find("enchanted_"..tool) then return true end
 129         end
 130         return false
 131 end
 132
 133 function enchanting.put(_, listname, _, stack)
 134         local stackname = stack:get_name()
 135         if listname == "mese" and stackname == "default:mese_crystal" then
 136                 return stack:get_count()
 137         elseif listname == "tool" and allowed(stackname:match("[^:]+$")) then
 138                 return 1
 139         end
 140         return 0
 141 end
 142
 143 function enchanting.on_take(pos, listname)
 144         if listname == "tool" then enchanting.formspec(pos, nil) end
 145 end
 146
 147 function enchanting.construct(pos)
 148         local meta = minetest.get_meta(pos)
 149         meta:set_string("infotext", "Enchantment Table")
 150         enchanting.formspec(pos, nil)
 151
 152         local inv = meta:get_inventory()
 153         inv:set_size("tool", 1)
 154         inv:set_size("mese", 1)
 155
 156         minetest.add_entity({x=pos.x, y=pos.y+0.85, z=pos.z}, "xdecor:book_open")
 157         local timer = minetest.get_node_timer(pos)
 158         timer:start(5.0)
 159 end
 160
 161 function enchanting.destruct(pos)
 162         for _, obj in pairs(minetest.get_objects_inside_radius(pos, 0.9)) do
 163                 if obj and obj:get_luaentity() and
 164                                 obj:get_luaentity().name == "xdecor:book_open" then
 165                         obj:remove()
 166                         break
 167                 end
 168         end
 169 end
 170
 171 function enchanting.timer(pos)
 172         local num = #minetest.get_objects_inside_radius(pos, 0.9)
 173         if num == 0 then
 174                 minetest.add_entity({x=pos.x, y=pos.y+0.85, z=pos.z}, "xdecor:book_open")
 175         end
 176
 177         local minp = {x=pos.x-2, y=pos.y, z=pos.z-2}
 178         local maxp = {x=pos.x+2, y=pos.y+1, z=pos.z+2}
 179         local bookshelves = minetest.find_nodes_in_area(minp, maxp, "default:bookshelf")
 180         if #bookshelves == 0 then return true end
 181
 182         local bookshelf_pos = bookshelves[random(1, #bookshelves)]
 183         local x = pos.x - bookshelf_pos.x
 184         local y = bookshelf_pos.y - pos.y
 185         local z = pos.z - bookshelf_pos.z
 186
 187         if tostring(x..z):find(2) then
 188                 minetest.add_particle({
 189                         pos = bookshelf_pos,
 190                         velocity = {x=x, y=2-y, z=z},
 191                         acceleration = {x=0, y=-2.2, z=0},
 192                         expirationtime = 1,
 193                         size = 2,
 194                         texture = "xdecor_glyph"..random(1,18)..".png"
 195                 })
 196         end
 197         return true
 198 end
 199
 200 xdecor.register("enchantment_table", {
 201         description = "Enchantment Table",
 202         tiles = {"xdecor_enchantment_top.png",  "xdecor_enchantment_bottom.png",
 203                  "xdecor_enchantment_side.png", "xdecor_enchantment_side.png",
 204                  "xdecor_enchantment_side.png", "xdecor_enchantment_side.png"},
 205         groups = {cracky=1, level=1},
 206         sounds = default.node_sound_stone_defaults(),
 207         on_rotate = screwdriver.rotate_simple,
 208         can_dig = enchanting.dig,
 209         on_timer = enchanting.timer,
 210         on_construct = enchanting.construct,
 211         on_destruct = enchanting.destruct,
 212         on_receive_fields = enchanting.fields,
 213         on_metadata_inventory_put = enchanting.on_put,
 214         on_metadata_inventory_take = enchanting.on_take,
 215         allow_metadata_inventory_put = enchanting.put,
 216         allow_metadata_inventory_move = function() return 0 end
 217 })
 218
 219 minetest.register_entity("xdecor:book_open", {
 220         visual = "sprite",
 221         visual_size = {x=0.75, y=0.75},
 222         collisionbox = {0},
 223         physical = false,
 224         textures = {"xdecor_book_open.png"},
 225         on_activate = function(self)
 226                 local pos = self.object:getpos()
 227                 local pos_under = {x=pos.x, y=pos.y-1, z=pos.z}
 228
 229                 if minetest.get_node(pos_under).name ~= "xdecor:enchantment_table" then
 230                         self.object:remove()
 231                 end
 232         end
 233 })
 234
 235 function enchanting:register_tools(mod, def)
 236         for tool in pairs(def.tools) do
 237         for material in def.materials:gmatch("[%w_]+") do
 238         for enchant in def.tools[tool].enchants:gmatch("[%w_]+") do
 239                 local original_tool = minetest.registered_tools[mod..":"..tool.."_"..material]
 240                 if not original_tool then break end
 241                 local original_toolcaps = original_tool.tool_capabilities
 242
 243                 if original_toolcaps then
 244                         local original_damage_groups = original_toolcaps.damage_groups
 245                         local original_groupcaps = original_toolcaps.groupcaps
 246                         local groupcaps = table.copy(original_groupcaps)
 247                         local fleshy = original_damage_groups.fleshy
 248                         local full_punch_interval = original_toolcaps.full_punch_interval
 249                         local max_drop_level = original_toolcaps.max_drop_level
 250                         local group = next(original_groupcaps)
 251
 252                         if enchant == "durable" then
 253                                 groupcaps[group].uses = ceil(original_groupcaps[group].uses *
 254                                                              enchanting.uses)
 255                         elseif enchant == "fast" then
 256                                 for i, time in pairs(original_groupcaps[group].times) do
 257                                         groupcaps[group].times[i] = time - enchanting.times
 258                                 end
 259                         elseif enchant == "sharp" then
 260                                 fleshy = fleshy + enchanting.damages
 261                         end
 262
 263                         minetest.register_tool(":"..mod..":enchanted_"..tool.."_"..material.."_"..enchant, {
 264                                 description = "Enchanted "..cap(material).." "..cap(tool)..
 265                                         self:get_tooltip(enchant, original_groupcaps[group], fleshy),
 266                                 inventory_image = original_tool.inventory_image.."^[colorize:violet:50",
 267                                 wield_image = original_tool.wield_image,
 268                                 groups = {not_in_creative_inventory=1},
 269                                 tool_capabilities = {
 270                                         groupcaps = groupcaps, damage_groups = {fleshy = fleshy},
 271                                         full_punch_interval = full_punch_interval,
 272                                         max_drop_level = max_drop_level
 273                                 }
 274                         })
 275                 end
 276         end
 277         end
 278         end
 279 end
 280
 281 enchanting:register_tools("default", {
 282         materials = "steel, bronze, mese, diamond",
 283         tools = {
 284                 axe    = {enchants = "durable, fast"},
 285                 pick   = {enchants = "durable, fast"},
 286                 shovel = {enchants = "durable, fast"},
 287                 sword  = {enchants = "sharp"}
 288         }
 289 })