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 }
  13
  14 local function cap(S) return S:gsub("^%l", string.upper) end
  15 local function to_percent(orig_value, final_value)
  16         return abs(ceil(((final_value - orig_value) / orig_value) * 100))
  17 end
  18
  19 function enchanting:get_tooltip(enchant, orig_caps, fleshy)
  20         local bonus = {durable=0, efficiency=0, damages=0}
  21         if orig_caps then
  22                 bonus.durable = to_percent(orig_caps.uses, orig_caps.uses * enchanting.uses)
  23                 local sum_caps_times = 0
  24                 for i=1, #orig_caps.times do
  25                         sum_caps_times = sum_caps_times + orig_caps.times[i]
  26                 end
  27                 local average_caps_time = sum_caps_times / #orig_caps.times
  28                 bonus.efficiency = to_percent(average_caps_time, average_caps_time -
  29                                               enchanting.times)
  30         end
  31         if fleshy then
  32                 bonus.damages = to_percent(fleshy, fleshy + enchanting.damages)
  33         end
  34
  35         local specs = { -- not finished, to complete
  36                 durable = {"#00baff", " (+"..bonus.durable.."%)"},
  37                 fast    = {"#74ff49", " (+"..bonus.efficiency.."%)"},
  38                 sharp   = {"#ffff00", " (+"..bonus.damages.."%)"},
  39                 strong  = {"#ff3d3d", ""},
  40                 speed   = {"#fd5eff", ""}
  41         }
  42         return minetest.colorize and minetest.colorize(specs[enchant][1],
  43                         "\n"..cap(enchant)..specs[enchant][2]) or
  44                         "\n"..cap(enchant)..specs[enchant][2]
  45 end
  46
  47 local enchant_buttons = {
  48         [[ image_button[3.9,0.85;4,0.92;bg_btn.png;fast;Efficiency]
  49         image_button[3.9,1.77;4,1.12;bg_btn.png;durable;Durability] ]],
  50         "image_button[3.9,0.85;4,0.92;bg_btn.png;strong;Strength]",
  51         "image_button[3.9,2.9;4,0.92;bg_btn.png;sharp;Sharpness]",
  52         [[ image_button[3.9,0.85;4,0.92;bg_btn.png;strong;Strength]
  53         image_button[3.9,1.77;4,1.12;bg_btn.png;speed;Speed] ]]
  54 }
  55
  56 function enchanting.formspec(pos, num)
  57         local meta = minetest.get_meta(pos)
  58         local formspec = [[ size[9,9;]
  59                         bgcolor[#080808BB;true]
  60                         background[0,0;9,9;ench_ui.png]
  61                         list[context;tool;0.9,2.9;1,1;]
  62                         list[context;mese;2,2.9;1,1;]
  63                         list[current_player;main;0.5,4.5;8,4;]
  64                         listring[current_player;main]
  65                         listring[context;tool]
  66                         listring[current_player;main]
  67                         listring[context;mese]
  68                         image[2,2.9;1,1;mese_layout.png]
  69                         tooltip[sharp;Your weapon inflicts more damages]
  70                         tooltip[durable;Your tool last longer]
  71                         tooltip[fast;Your tool digs faster] ]]
  72                         ..default.gui_slots..default.get_hotbar_bg(0.5,4.5)
  73
  74         formspec = formspec..(enchant_buttons[num] or "")
  75         meta:set_string("formspec", formspec)
  76 end
  77
  78 function enchanting.on_put(pos, listname, _, stack)
  79         if listname == "tool" then
  80                 local stackname = stack:get_name()
  81                 local tool_groups = {
  82                         "axe, pick, shovel",
  83                         "sword",
  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 return end
  96         local inv = minetest.get_meta(pos):get_inventory()
  97         local tool = inv:get_stack("tool", 1)
  98         local mese = inv:get_stack("mese", 1)
  99         local orig_wear = tool:get_wear()
 100         local mod, name = tool:get_name():match("(.*):(.*)")
 101         local enchanted_tool = (mod or "")..":enchanted_"..(name or "").."_"..next(fields)
 102
 103         if mese:get_count() >= mese_cost and minetest.registered_tools[enchanted_tool] then
 104                 minetest.sound_play("xdecor_enchanting", {
 105                         to_player=sender:get_player_name(), gain=0.8})
 106                 tool:replace(enchanted_tool)
 107                 tool:add_wear(orig_wear)
 108                 mese:take_item(mese_cost)
 109                 inv:set_stack("mese", 1, mese)
 110                 inv:set_stack("tool", 1, tool)
 111         end
 112 end
 113
 114 function enchanting.dig(pos)
 115         local inv = minetest.get_meta(pos):get_inventory()
 116         return inv:is_empty("tool") and inv:is_empty("mese")
 117 end
 118
 119 local function allowed(tool)
 120         if not tool then return false end
 121         for item in pairs(minetest.registered_tools) do
 122                 if item:find("enchanted_"..tool) then return true end
 123         end
 124         return false
 125 end
 126
 127 function enchanting.put(_, listname, _, stack)
 128         local stackname = stack:get_name()
 129         if listname == "mese" and stackname == "default:mese_crystal" then
 130                 return stack:get_count()
 131         elseif listname == "tool" and allowed(stackname:match("[^:]+$")) then
 132                 return 1
 133         end
 134         return 0
 135 end
 136
 137 function enchanting.on_take(pos, listname)
 138         if listname == "tool" then enchanting.formspec(pos, nil) end
 139 end
 140
 141 function enchanting.construct(pos)
 142         local meta = minetest.get_meta(pos)
 143         meta:set_string("infotext", "Enchantment Table")
 144         enchanting.formspec(pos, nil)
 145
 146         local inv = meta:get_inventory()
 147         inv:set_size("tool", 1)
 148         inv:set_size("mese", 1)
 149
 150         minetest.add_entity({x=pos.x, y=pos.y+0.85, z=pos.z}, "xdecor:book_open")
 151         local timer = minetest.get_node_timer(pos)
 152         timer:start(5.0)
 153 end
 154
 155 function enchanting.destruct(pos)
 156         for _, obj in pairs(minetest.get_objects_inside_radius(pos, 0.9)) do
 157                 if obj and obj:get_luaentity() and
 158                                 obj:get_luaentity().name == "xdecor:book_open" then
 159                         obj:remove()
 160                         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                 local original_toolcaps = original_tool.tool_capabilities
 236
 237                 if original_toolcaps then
 238                         local original_damage_groups = original_toolcaps.damage_groups
 239                         local original_groupcaps = original_toolcaps.groupcaps
 240                         local groupcaps = table.copy(original_groupcaps)
 241                         local fleshy = original_damage_groups.fleshy
 242                         local full_punch_interval = original_toolcaps.full_punch_interval
 243                         local max_drop_level = original_toolcaps.max_drop_level
 244                         local group = next(original_groupcaps)
 245
 246                         if enchant == "durable" then
 247                                 groupcaps[group].uses = ceil(original_groupcaps[group].uses *
 248                                                              enchanting.uses)
 249                         elseif enchant == "fast" then
 250                                 for i, time in pairs(original_groupcaps[group].times) do
 251                                         groupcaps[group].times[i] = time - enchanting.times
 252                                 end
 253                         elseif enchant == "sharp" then
 254                                 fleshy = fleshy + enchanting.damages
 255                         end
 256
 257                         minetest.register_tool(":"..mod..":enchanted_"..tool.."_"..material.."_"..enchant, {
 258                                 description = "Enchanted "..cap(material).." "..cap(tool)..
 259                                         self:get_tooltip(enchant, original_groupcaps[group], fleshy),
 260                                 inventory_image = original_tool.inventory_image.."^[colorize:violet:50",
 261                                 wield_image = original_tool.wield_image,
 262                                 groups = {not_in_creative_inventory=1},
 263                                 tool_capabilities = {
 264                                         groupcaps = groupcaps, damage_groups = {fleshy = fleshy},
 265                                         full_punch_interval = full_punch_interval,
 266                                         max_drop_level = max_drop_level
 267                                 }
 268                         })
 269                 end
 270         end
 271         end
 272         end
 273 end
 274
 275 enchanting:register_tools("default", {
 276         materials = "steel, bronze, mese, diamond",
 277         tools = {
 278                 axe    = {enchants = "durable, fast"},
 279                 pick   = {enchants = "durable, fast"},
 280                 shovel = {enchants = "durable, fast"},
 281                 sword  = {enchants = "sharp"}
 282         }
 283 })
 284
 285 -- Recipes
 286
 287 minetest.register_craft({
 288         output = "xdecor:enchantment_table",
 289         recipe = {
 290                 {"", "default:book", ""},
 291                 {"default:diamond", "default:obsidian", "default:diamond"},
 292                 {"default:obsidian", "default:obsidian", "default:obsidian"}
 293         }
 294 })