player_input.lua

   1 local minetest,name = minetest,minetest.localplayer:get_name()
   2 local player_movement_state = minetest.mod_channel_join(name..":player_movement_state")
   3 --double tap running
   4
   5 --set up our initial values
   6 local state = 0
   7 local old_state = 0
   8 local running = false
   9 local run_discharge_timer = 0
  10 local old_up = false
  11 local sneak = false
  12 local old_sneak = false
  13 local bunny_hop = false
  14 local old_bunny_hop = false
  15
  16
  17
  18 --attempt to tell the server to allow us to run
  19 local send_server_movement_state = function(state)
  20         player_movement_state:send_all(state)
  21         --print(state)
  22 end
  23
  24 --receive the server states
  25 minetest.register_on_modchannel_message(function(channel_name, sender, message)
  26         if sender == "" and channel_name == name..":player_movement_state" then
  27                 local message_table = minetest.deserialize(message)
  28
  29                 if message.stop_running then
  30                         running = false
  31                         bunny_hop = false
  32                         run_discharge_timer = 0
  33                         state = message.state
  34                 end
  35         end
  36 end)
  37
  38 --check player's input on the "up" key
  39 minetest.register_globalstep(function(dtime)
  40
  41         if not minetest.localplayer then
  42                 return
  43         end
  44
  45         local input = minetest.localplayer:get_control()
  46         local vel = minetest.localplayer:get_velocity()
  47         local oldvel = minetest.localplayer:get_last_velocity()
  48
  49         --cancel running if the player bumps into something
  50         if running == true and ((vel.x == 0 and oldvel.x ~= 0) or (vel.z == 0 and oldvel.z ~= 0)) then
  51                 running = false
  52                 bunny_hop = false
  53                 run_discharge_timer = 0
  54                 state = 0
  55         end
  56
  57         --reset the run flag
  58         if running == true and (input.up == false or input.sneak == true or input.down == true) then
  59                 running = false
  60                 bunny_hop = false
  61                 state = 0
  62         end
  63
  64
  65         --check if need to tell server to bunnyhop
  66         if running == true and vel.y > 0 and input.jump == true and bunny_hop == false then
  67                 state = 2
  68                 bunny_hop = true
  69         end
  70
  71         --stop bunny hopping
  72         if bunny_hop == true and input.jump == false and running == true and vel.y == 0 then
  73                 bunny_hop = false
  74                 state = 1
  75         end
  76
  77
  78         --half second window to double tap running
  79         if run_discharge_timer > 0 then
  80                 run_discharge_timer = run_discharge_timer - dtime
  81                 if run_discharge_timer <= 0 then
  82                         run_discharge_timer = 0
  83                 end
  84                 --initialize double tap run
  85                 if old_up == false and input.up == true and vel.x ~= 0 and vel.z ~= 0 then
  86                         run_discharge_timer = 0
  87                         running = true
  88                         state = 1
  89                 end
  90         end
  91
  92
  93         --check if new input of walking forwards
  94         if input.up and input.down == false and input.sneak == false and old_up == false and running == false and run_discharge_timer <= 0 then
  95                 run_discharge_timer = 0.2
  96         end
  97
  98         --add this here so the player can sneak
  99         if input.sneak == true then
 100                 run_discharge_timer = 0
 101                 sneak = true
 102                 bunny_hop = false
 103                 running = false
 104         end
 105
 106
 107         --set the sneak state
 108         if sneak == true and old_sneak == false then
 109                 state = 3
 110         elseif input.sneak == false and old_sneak == true then
 111                 sneak = false
 112                 state = 0
 113         end
 114
 115         --only send if state has changed
 116         if state ~= old_state then
 117                 send_server_movement_state(tostring(state))
 118         end
 119
 120         --save old value
 121         old_up = input.up
 122         old_sneak = input.sneak
 123         old_bunny_hop = bunny_hop
 124         old_state = state
 125 end)