init.lua

   1 local S = minetest.get_translator("sfinv_buttons")
   2
   3 local buttons = {}
   4 local button_names_sorted = {}
   5 local buttons_num = 0
   6
   7 local button_prefix = "sfinv_button_"
   8
   9 -- Stores selected index in textlist
  10 local player_indexes = {}
  11 local player_selections = {}
  12
  13 sfinv_buttons = {}
  14
  15 sfinv_buttons.register_button = function(name, def)
  16         buttons[name] = def
  17         table.insert(button_names_sorted, name)
  18         buttons_num = buttons_num + 1
  19 end
  20
  21 -- Turns a textlist index to a button name
  22 local index_to_button_name = function(index, player)
  23         local internal_index = 1
  24         for i=1, #button_names_sorted do
  25                 local name = button_names_sorted[i]
  26                 local def = buttons[name]
  27                 if internal_index == index then
  28                         if def.show == nil or def.show(player) == true then
  29                                 return name
  30                         end
  31                 end
  32                 internal_index = internal_index + 1
  33         end
  34         return nil
  35 end
  36
  37 local MAX_ROWS = 9
  38 local MAX_COLS = 2
  39 local MAX_BUTTONS = MAX_ROWS * MAX_COLS
  40
  41 sfinv.register_page("sfinv_buttons:buttons", {
  42         title = S("More"),
  43         is_in_nav = function(self, player, context)
  44                 -- Tab is shown only if at least 1 button is visible to player
  45                 for _, def in pairs(buttons) do
  46                         if def.show == nil or def.show(player) == true then
  47                                 return true
  48                         end
  49                 end
  50                 return false
  51         end,
  52         get = function(self, player, context)
  53                 local f = ""
  54                 local y = 0
  55                 local x = 0
  56                 local w
  57                 if buttons_num > MAX_ROWS then
  58                         w = 3
  59                 else
  60                         w = 7
  61                 end
  62                 if buttons_num > MAX_BUTTONS then
  63                         f = f .. "textlist[0,0;7.8,8;sfinv_buttons_textlist;"
  64                 end
  65                 local buttons_added = 0
  66                 for i=1, #button_names_sorted do
  67                         local name = button_names_sorted[i]
  68                         local def = buttons[name]
  69                         if def.show == nil or def.show(player) == true then
  70                                 if buttons_num > MAX_BUTTONS then
  71                                         if buttons_added >= 1 then
  72                                                 f = f .. ","
  73                                         end
  74                                         f = f .. minetest.formspec_escape(def.title)
  75                                 else
  76                                         if def.image ~= nil then
  77                                                 f = f .. "image["..(x+0.1)..","..(y+0.1)..";0.8,0.8;"..def.image.."]"
  78                                         end
  79                                         local button_id = minetest.formspec_escape(button_prefix .. name)
  80                                         f = f .. "button["..
  81                                                 (x+1)..","..y..";"..w..",1;"..
  82                                                 button_id..";"..
  83                                                 minetest.formspec_escape(def.title)..
  84                                                 "]"
  85                                         if def.tooltip ~= nil then
  86                                                 f = f .. "tooltip["..button_id..";"..
  87                                                         minetest.formspec_escape(def.tooltip).."]"
  88                                         end
  89                                         y = y + 1
  90                                         if y >= MAX_ROWS then
  91                                                 y = 0
  92                                                 x = x + 4
  93                                         end
  94                                 end
  95                                 buttons_added = buttons_added + 1
  96                         end
  97                 end
  98                 if buttons_num > MAX_BUTTONS then
  99                         local index = player_indexes[player:get_player_name()]
 100                         if index ~= nil then
 101                                 f = f .. ";" .. index
 102                         end
 103                         f = f .. "]"
 104                         f = f .. "button[0,8;8,1;sfinv_buttons_action;"..minetest.formspec_escape(S("Go")).."]"
 105                 end
 106                 return sfinv.make_formspec(player, context, f)
 107         end,
 108         on_player_receive_fields = function(self, player, context, fields)
 109                 local player_name = player:get_player_name()
 110                 -- TODO: Test support case when some buttons are hidden for player
 111                 if fields.sfinv_buttons_action then
 112                         local button = buttons[player_selections[player_name]]
 113                         if button ~= nil and button.action ~= nil then
 114                                 button.action(player)
 115                         end
 116                 elseif fields.sfinv_buttons_textlist then
 117                         local explode = minetest.explode_textlist_event(fields.sfinv_buttons_textlist)
 118                         if explode.type == "CHG" then
 119                                 player_indexes[player_name] = explode.index
 120                                 player_selections[player_name] = index_to_button_name(explode.index, player)
 121                         elseif explode.type == "DCL" then
 122                                 local button = buttons[button_names_sorted[explode.index]]
 123                                 if button ~= nil and button.action ~= nil then
 124                                         button.action(player)
 125                                 end
 126                         end
 127                 else
 128                         for widget_name, _ in pairs(fields) do
 129                                 local id = string.sub(widget_name, string.len(button_prefix) + 1, -1)
 130                                 if buttons[id] ~= nil and buttons[id].action ~= nil then
 131                                         buttons[id].action(player)
 132                                 end
 133                         end
 134                 end
 135         end,
 136 })
 137
 138 minetest.register_on_joinplayer(function(player)
 139         player_indexes[player:get_player_name()] = nil
 140         player_selections[player:get_player_name()] = nil
 141 end)
 142
 143 minetest.register_on_leaveplayer(function(player)
 144         player_indexes[player:get_player_name()] = nil
 145         player_selections[player:get_player_name()] = nil
 146 end)