mods/ITEMS/mcl_maps/init.lua

   1 local S = minetest.get_translator("mcl_maps")
   2
   3 -- Turn empty map into filled map by rightclick
   4 local make_filled_map = function(itemstack, placer, pointed_thing)
   5         local new_map = ItemStack("mcl_maps:filled_map")
   6         itemstack:take_item()
   7         if itemstack:is_empty() then
   8                 return new_map
   9         else
  10                 local inv = placer:get_inventory()
  11                 if inv:room_for_item("main", new_map) then
  12                         inv:add_item("main", new_map)
  13                 else
  14                         minetest.add_item(placer:get_pos(), new_map)
  15                 end
  16                 return itemstack
  17         end
  18 end
  19
  20 minetest.register_craftitem("mcl_maps:empty_map", {
  21         description = S("Empty Map"),
  22         _doc_items_longdesc = S("Empty maps are not useful as maps, but they can be stacked and turned to maps which can be used."),
  23         _doc_items_usagehelp = S("Rightclick to start using the map (which can't be stacked anymore)."),
  24         inventory_image = "mcl_maps_map_empty.png",
  25         groups = { not_in_creative_inventory = 1 },
  26         on_place = make_filled_map,
  27         on_secondary_use = make_filled_map,
  28         stack_max = 64,
  29 })
  30
  31 local function has_item_in_hotbar(player, item)
  32         -- Requirement: player carries the tool in the hotbar
  33         local inv = player:get_inventory()
  34         local hotbar = player:hud_get_hotbar_itemcount()
  35         for i=1, hotbar do
  36                 if inv:get_stack("main", i):get_name() == item then
  37                         return true
  38                 end
  39         end
  40         return false
  41 end
  42
  43 -- Checks if player is still allowed to display the minimap
  44 local function update_minimap(player)
  45         local creative = minetest.is_creative_enabled(player:get_player_name())
  46         if creative then
  47                 player:hud_set_flags({minimap=true, minimap_radar = true})
  48         else
  49                 if has_item_in_hotbar(player, "mcl_maps:filled_map") then
  50                         player:hud_set_flags({minimap = true, minimap_radar = false})
  51                 else
  52                         player:hud_set_flags({minimap = false, minimap_radar = false})
  53                 end
  54         end
  55 end
  56
  57 -- Remind player how to use the minimap correctly
  58 local function use_minimap(itemstack, player, pointed_thing)
  59         if player and player:is_player() then
  60                 update_minimap(player)
  61                 minetest.chat_send_player(player:get_player_name(), S("Use the minimap key to show the map."))
  62         end
  63 end
  64
  65 -- Enables minimap if carried in hotbar.
  66 -- If this item is NOT in the hotbar, the minimap is unavailable
  67 -- Note: This is not at all like Minecraft right now. Minetest's minimap is pretty overpowered, it
  68 -- has a very greatly zoomed-out version and even a radar mode
  69 minetest.register_craftitem("mcl_maps:filled_map", {
  70         description = S("Map"),
  71         _tt_help = S("Enables minimap"),
  72         _doc_items_longdesc = S("Maps show your surroundings as you explore the world."),
  73         _doc_items_usagehelp = S("Hold the map in any of the hotbar slots. This allows you to access the minimap by pressing the minimap key (see controls settings).").."\n"..
  74                         S("In Creative Mode, you don't need this item; the minimap is always available."),
  75         groups = { tool = 1 },
  76         inventory_image = "mcl_maps_map_filled.png^(mcl_maps_map_filled_markings.png^[colorize:#000000)",
  77         stack_max = 1,
  78
  79         on_use = use_minimap,
  80         on_secondary_use = use_minimap,
  81 })
  82
  83 minetest.register_craft({
  84         output = "mcl_maps:filled_map",
  85         recipe = {
  86                 { "mcl_core:paper", "mcl_core:paper", "mcl_core:paper" },
  87                 { "mcl_core:paper", "group:compass", "mcl_core:paper" },
  88                 { "mcl_core:paper", "mcl_core:paper", "mcl_core:paper" },
  89         }
  90 })
  91
  92 minetest.register_on_joinplayer(function(player)
  93         update_minimap(player)
  94 end)
  95
  96 local updatetimer = 0
  97 if not minetest.is_creative_enabled("") then
  98         minetest.register_globalstep(function(dtime)
  99                 updatetimer = updatetimer + dtime
 100                 if updatetimer > 0.1 then
 101                         local players = minetest.get_connected_players()
 102                         for i=1, #players do
 103                                 update_minimap(players[i])
 104                         end
 105                         updatetimer = updatetimer - dtime
 106                 end
 107         end)
 108 end