mods/redstone/player_detector.lua

   1 --detects players and outputs accordingly
   2 for i = 0,9  do
   3 minetest.register_node("redstone:player_detector_"..i, {
   4         description = "Redstone Player Detector",
   5         --inventory_image = "redstone_torch.png",
   6         --wield_image = "redstone_torch.png",
   7         --wield_scale = {x = 1, y = 1, z = 1 + 2/16},
   8         drawtype = "normal",
   9         tiles = {"player_detector.png"},
  10         paramtype = "light",
  11         paramtype2 = "none",
  12         power = 9,
  13         --sunlight_propagates = true,
  14         drop = "redstone:player_detector_0",
  15         --walkable = false,
  16         light_source = i,
  17         groups = {stone = 1, hard = 1, pickaxe = 1, hand = 4, torch=1,redstone=1,redstone_torch=1,redstone_power=i, redstone_player_detection = 1},
  18         legacy_wallmounted = true,
  19
  20         on_construct = function(pos)
  21                 redstone.collect_info(pos)
  22         end,
  23         after_destruct = function(pos, oldnode)
  24                 redstone.collect_info(pos)
  25         end,
  26         sounds = main.stoneSound(),
  27 })
  28 end
  29
  30 minetest.register_abm{
  31     label = "Redstone Player Detection",
  32         nodenames = {"group:redstone_player_detection"},
  33         --neighbors = {"group:water"},
  34         interval = 0.2,
  35         chance = 1,
  36         action = function(pos)
  37                 local found_player = false
  38                 for _,object in ipairs(minetest.get_objects_inside_radius(pos, 9)) do
  39                         if object:is_player() and object:get_hp() > 0 then
  40                                 local level = minetest.get_node_group(minetest.get_node(pos).name, "redstone_power")
  41                                 found_player = true
  42                                 local pos2 = object:get_pos()
  43                                 local distance = math.floor(vector.distance(pos2,pos))
  44                                 distance = math.abs(distance - 9)
  45                                 if level ~= distance then
  46                                         minetest.set_node(pos,{name="redstone:player_detector_"..distance})
  47                                         redstone.collect_info(pos)
  48                                         --print(distance)
  49                                 end
  50                         end
  51                 end
  52                 if found_player == false then
  53                         minetest.set_node(pos,{name="redstone:player_detector_0"})
  54                         redstone.collect_info(pos)
  55                 end
  56         end,
  57 }