environment_effects.lua

   1 local old_node
   2 local in_water = false
   3 local old_in_water = false
   4 --this is to check if the player is exploring a cave
   5 --if exploring cave not near an open shaft then play a scary noise
   6 --every 5-7 minutes
   7 local scary_sound_player_timer = math.random(-120,0)
   8
   9
  10 --this is used for the water trickling effect
  11 local water_trickling_timer = 0
  12 local water_sound_handle = nil
  13
  14 minetest.register_globalstep(function(dtime)
  15         if not minetest.localplayer then
  16                 return
  17         end
  18         local vel = minetest.localplayer:get_velocity().y
  19         local pos = minetest.localplayer:get_pos()
  20
  21         local node = minetest.get_node_or_nil(pos)
  22         if node then
  23                 local name = node.name
  24                 if name == "main:water" or name == "main:waterflow" then
  25                         in_water = true
  26                         if in_water == true and old_in_water == false and vel < 0 then
  27                                 minetest.sound_play("splash", {gain = 0.4, pitch = math.random(80,100)/100, gain = 0.05})
  28                         end
  29                 else
  30                         in_water = false
  31                 end
  32         end
  33
  34         old_node = node
  35         old_in_water = in_water
  36
  37
  38         ---------------------------------------------
  39         --print(scary_sound_player_timer)
  40         --try to play every 5-7 minutes
  41         scary_sound_player_timer = scary_sound_player_timer + dtime
  42         if scary_sound_player_timer > 300 then
  43                 scary_sound_player_timer = math.random(-120,0)
  44                 pos.y = pos.y + 1.625
  45                 local light = minetest.get_node_light(pos)
  46                 if pos.y < 0 and light <= 13 then
  47                         minetest.sound_play("scary_noise",{gain=0.4,pitch=math.random(70,100)/100})
  48                 end
  49         end
  50
  51
  52         ------------------------------------------------------
  53
  54         --the water trickling timer
  55         water_trickling_timer = water_trickling_timer + dtime
  56         if water_trickling_timer > 0.4 then
  57                 water_trickling_timer = 0
  58                 local is_water_near = minetest.find_node_near(pos, 3, {"main:waterflow"})
  59                 if is_water_near and not water_sound_handle then
  60                         water_sound_handle = minetest.sound_play("stream", {loop=true,gain=0})
  61                         minetest.sound_fade(water_sound_handle, 0.25, 0.1)
  62                 elseif not is_water_near and water_sound_handle then
  63                         minetest.sound_fade(water_sound_handle, -0.25, 0)
  64                         water_sound_handle = nil
  65                 end
  66         end
  67 end)