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 - enchanting.times)
  32         end
  33         if fleshy then
  34                 bonus.damages = to_percent(fleshy, fleshy + enchanting.damages)
  35         end
  36
  37         local specs = { -- not finished, to complete
  38                 durable = {"#00baff", " (+"..bonus.durable.."%)"},
  39                 fast    = {"#74ff49", " (+"..bonus.efficiency.."%)"},
  40                 sharp   = {"#ffff00", " (+"..bonus.damages.."%)"},
  41                 strong  = {"#ff3d3d", ""},
  42                 speed   = {"#fd5eff", ""}
  43         }
  44         return minetest.colorize(specs[enchant][1], "\n"..cap(enchant)..specs[enchant][2])
  45 end
  46
  47
  48 function enchanting.formspec(pos, num)
  49         local meta = minetest.get_meta(pos)
  50         local formspec = [[ size[9,9;]
  51                         bgcolor[#080808BB;true]
  52                         background[0,0;9,9;ench_ui.png]
  53                         list[context;tool;0.9,2.9;1,1;]
  54                         list[context;mese;2,2.9;1,1;]
  55                         list[current_player;main;0.5,4.5;8,4;]
  56                         image[2,2.9;1,1;mese_layout.png]
  57                         tooltip[sharp;Your weapon inflicts more damages]
  58                         tooltip[durable;Your tool last longer]
  59                         tooltip[fast;Your tool digs faster]
  60                         tooltip[strong;Your armor is more resistant]
  61                         tooltip[speed;Your speed is increased] ]]
  62                         ..default.gui_slots..default.get_hotbar_bg(0.5,4.5)
  63
  64         local enchant_buttons = {
  65                 [[ image_button[3.9,0.85;4,0.92;bg_btn.png;fast;Efficiency]
  66                 image_button[3.9,1.77;4,1.12;bg_btn.png;durable;Durability] ]],
  67                 "image_button[3.9,0.85;4,0.92;bg_btn.png;strong;Strength]",
  68                 "image_button[3.9,2.9;4,0.92;bg_btn.png;sharp;Sharpness]",
  69                 [[ image_button[3.9,0.85;4,0.92;bg_btn.png;strong;Strength]
  70                 image_button[3.9,1.77;4,1.12;bg_btn.png;speed;Speed] ]]
  71         }
  72
  73         formspec = formspec..(enchant_buttons[num] or "")
  74         meta:set_string("formspec", formspec)
  75 end
  76
  77 function enchanting.on_put(pos, listname, _, stack)
  78         if listname == "tool" then
  79                 local stackname = stack:get_name()
  80                 local tool_groups = {
  81                         "axe, pick, shovel",
  82                         "chestplate, leggings, helmet",
  83                         "sword", "boots"
  84                 }
  85
  86                 for idx, tools in pairs(tool_groups) do
  87                         if tools:find(stackname:match(":(%w+)")) then
  88                                 enchanting.formspec(pos, idx)
  89                         end
  90                 end
  91         end
  92 end
  93
  94 function enchanting.fields(pos, _, fields, sender)
  95         if not next(fields) or fields.quit then
  96                 return
  97         end
  98         local inv = minetest.get_meta(pos):get_inventory()
  99         local tool = inv:get_stack("tool", 1)
 100         local mese = inv:get_stack("mese", 1)
 101         local orig_wear = tool:get_wear()
 102         local mod, name = tool:get_name():match("(.*):(.*)")
 103         local enchanted_tool = (mod or "")..":enchanted_"..(name or "").."_"..next(fields)
 104
 105         if mese:get_count() >= mese_cost and minetest.registered_tools[enchanted_tool] then
 106                 minetest.sound_play("xdecor_enchanting", {to_player=sender:get_player_name(), gain=0.8})
 107                 tool:replace(enchanted_tool)
 108                 tool:add_wear(orig_wear)
 109                 mese:take_item(mese_cost)
 110                 inv:set_stack("mese", 1, mese)
 111                 inv:set_stack("tool", 1, tool)
 112         end
 113 end
 114
 115 function enchanting.dig(pos)
 116         local inv = minetest.get_meta(pos):get_inventory()
 117         return inv:is_empty("tool") and inv:is_empty("mese")
 118 end
 119
 120 local function allowed(tool)
 121         if not tool then return false end
 122         for item in pairs(minetest.registered_tools) do
 123                 if item:find("enchanted_"..tool) then return true end
 124         end
 125         return false
 126 end
 127
 128 function enchanting.put(_, listname, _, stack)
 129         local item = stack:get_name():match("[^:]+$")
 130         if listname == "mese" and item == "mese_crystal" then
 131                 return stack:get_count()
 132         elseif listname == "tool" and allowed(item) then
 133                 return 1
 134         end
 135         return 0
 136 end
 137
 138 function enchanting.on_take(pos, listname)
 139         if listname == "tool" then enchanting.formspec(pos, nil) end
 140 end
 141
 142 function enchanting.construct(pos)
 143         local meta = minetest.get_meta(pos)
 144         meta:set_string("infotext", "Enchantment Table")
 145         enchanting.formspec(pos, nil)
 146
 147         local inv = meta:get_inventory()
 148         inv:set_size("tool", 1)
 149         inv:set_size("mese", 1)
 150
 151         minetest.add_entity({x=pos.x, y=pos.y+0.85, z=pos.z}, "xdecor:book_open")
 152         local timer = minetest.get_node_timer(pos)
 153         timer:start(5.0)
 154 end
 155
 156 function enchanting.destruct(pos)
 157         for _, obj in pairs(minetest.get_objects_inside_radius(pos, 0.9)) do
 158                 if obj and obj:get_luaentity() and
 159                                 obj:get_luaentity().name == "xdecor:book_open" then
 160                         obj:remove() break
 161                 end
 162         end
 163 end
 164
 165 function enchanting.timer(pos)
 166         local num = #minetest.get_objects_inside_radius(pos, 0.9)
 167         if num == 0 then
 168                 minetest.add_entity({x=pos.x, y=pos.y+0.85, z=pos.z}, "xdecor:book_open")
 169         end
 170
 171         local minp = {x=pos.x-2, y=pos.y, z=pos.z-2}
 172         local maxp = {x=pos.x+2, y=pos.y+1, z=pos.z+2}
 173         local bookshelves = minetest.find_nodes_in_area(minp, maxp, "default:bookshelf")
 174         if #bookshelves == 0 then return true end
 175
 176         local bookshelf_pos = bookshelves[random(1, #bookshelves)]
 177         local x = pos.x - bookshelf_pos.x
 178         local y = bookshelf_pos.y - pos.y
 179         local z = pos.z - bookshelf_pos.z
 180
 181         if tostring(x..z):find(2) then
 182                 minetest.add_particle({
 183                         pos = bookshelf_pos,
 184                         velocity = {x=x, y=2-y, z=z},
 185                         acceleration = {x=0, y=-2.2, z=0},
 186                         expirationtime = 1,
 187                         size = 2,
 188                         texture = "xdecor_glyph"..random(1,18)..".png"
 189                 })
 190         end
 191         return true
 192 end
 193
 194 xdecor.register("enchantment_table", {
 195         description = "Enchantment Table",
 196         tiles = {"xdecor_enchantment_top.png",  "xdecor_enchantment_bottom.png",
 197                  "xdecor_enchantment_side.png", "xdecor_enchantment_side.png",
 198                  "xdecor_enchantment_side.png", "xdecor_enchantment_side.png"},
 199         groups = {cracky=1, level=1},
 200         sounds = default.node_sound_stone_defaults(),
 201         on_rotate = screwdriver.rotate_simple,
 202         can_dig = enchanting.dig,
 203         on_timer = enchanting.timer,
 204         on_construct = enchanting.construct,
 205         on_destruct = enchanting.destruct,
 206         on_receive_fields = enchanting.fields,
 207         on_metadata_inventory_put = enchanting.on_put,
 208         on_metadata_inventory_take = enchanting.on_take,
 209         allow_metadata_inventory_put = enchanting.put,
 210         allow_metadata_inventory_move = function() return 0 end
 211 })
 212
 213 minetest.register_entity("xdecor:book_open", {
 214         visual = "sprite",
 215         visual_size = {x=0.75, y=0.75},
 216         collisionbox = {0},
 217         physical = false,
 218         textures = {"xdecor_book_open.png"},
 219         on_activate = function(self)
 220                 local pos = self.object:getpos()
 221                 local pos_under = {x=pos.x, y=pos.y-1, z=pos.z}
 222
 223                 if minetest.get_node(pos_under).name ~= "xdecor:enchantment_table" then
 224                         self.object:remove()
 225                 end
 226         end
 227 })
 228
 229 function enchanting:register_tools(mod, def)
 230         for tool in pairs(def.tools) do
 231         for material in def.materials:gmatch("[%w_]+") do
 232         for enchant in def.tools[tool].enchants:gmatch("[%w_]+") do
 233                 local original_tool = minetest.registered_tools[mod..":"..tool.."_"..material]
 234                 if not original_tool then break end
 235
 236                 if original_tool.tool_capabilities then
 237                         local original_damage_groups = original_tool.tool_capabilities.damage_groups
 238                         local original_groupcaps = original_tool.tool_capabilities.groupcaps
 239                         local groupcaps = table.copy(original_groupcaps)
 240                         local fleshy = original_damage_groups.fleshy
 241                         local full_punch_interval = original_tool.tool_capabilities.full_punch_interval
 242                         local max_drop_level = original_tool.tool_capabilities.max_drop_level
 243                         local group = next(original_groupcaps)
 244
 245                         if enchant == "durable" then
 246                                 groupcaps[group].uses = ceil(original_groupcaps[group].uses * enchanting.uses)
 247                         elseif enchant == "fast" then
 248                                 for i, time in pairs(original_groupcaps[group].times) do
 249                                         groupcaps[group].times[i] = time - enchanting.times
 250                                 end
 251                         elseif enchant == "sharp" then
 252                                 fleshy = fleshy + enchanting.damages
 253                         end
 254
 255                         minetest.register_tool(":"..mod..":enchanted_"..tool.."_"..material.."_"..enchant, {
 256                                 description = "Enchanted "..cap(material).." "..cap(tool)..
 257                                         self:get_tooltip(enchant, original_groupcaps[group], fleshy),
 258                                 inventory_image = original_tool.inventory_image.."^[colorize:violet:50",
 259                                 wield_image = original_tool.wield_image,
 260                                 groups = {not_in_creative_inventory=1},
 261                                 tool_capabilities = {
 262                                         groupcaps = groupcaps, damage_groups = {fleshy = fleshy},
 263                                         full_punch_interval = full_punch_interval, max_drop_level = max_drop_level
 264                                 }
 265                         })
 266                 end
 267
 268                 if mod == "3d_armor" then
 269                         local original_armor_groups = original_tool.groups
 270                         local armorcaps = {}
 271                         armorcaps.not_in_creative_inventory = 1
 272
 273                         for armor_group, value in pairs(original_armor_groups) do
 274                                 if enchant == "strong" then
 275                                         armorcaps[armor_group] = ceil(value * enchanting.strength)
 276                                 elseif enchant == "speed" then
 277                                         armorcaps[armor_group] = value
 278                                         armorcaps.physics_speed = enchanting.speed
 279                                         armorcaps.physics_jump = enchanting.jump
 280                                 end
 281                         end
 282
 283                         minetest.register_tool(":"..mod..":enchanted_"..tool.."_"..material.."_"..enchant, {
 284                                 description = "Enchanted "..cap(material).." "..cap(tool)..
 285                                         self:get_tooltip(enchant),
 286                                 inventory_image = original_tool.inventory_image,
 287                                 texture = "3d_armor_"..tool.."_"..material,
 288                                 wield_image = original_tool.wield_image,
 289                                 groups = armorcaps,
 290                                 wear = 0
 291                         })
 292                 end
 293         end
 294         end
 295         end
 296 end
 297
 298 enchanting:register_tools("default", {
 299         materials = "steel, bronze, mese, diamond",
 300         tools = {
 301                 axe    = {enchants = "durable, fast"},
 302                 pick   = {enchants = "durable, fast"},
 303                 shovel = {enchants = "durable, fast"},
 304                 sword  = {enchants = "sharp"}
 305         }
 306 })
 307
 308 enchanting:register_tools("3d_armor", {
 309         materials = "steel, bronze, gold, diamond",
 310         tools = {
 311                 boots      = {enchants = "strong, speed"},
 312                 chestplate = {enchants = "strong"},
 313                 helmet     = {enchants = "strong"},
 314                 leggings   = {enchants = "strong"}
 315         }
 316 })
 317