Camas/mods/default/model.lua

-- Copied from minetest_game and changed a bit

-- Minetest 0.4 mod: player
-- See README.txt for licensing and other information.

-- Variable for animation speed; 30-35 is good
local player_animation_speed = 33

-- Player animation blending
-- Note: This is currently broken due to a bug in Irrlicht, leave at 0
local animation_blend = 0

default.registered_player_models = {}

-- Local for speed.
local models = default.registered_player_models

function default.player_register_model(name, def)
   models[name] = def
end

-- Default player appearance
default.player_register_model(
   "character.b3d",
   {
      animation_speed = player_animation_speed,
      textures = {"character.png"},
      animations = {
	 -- Standard animations.
	 stand     = {x = 0,   y = 79},
	 lay       = {x = 162, y = 166},
	 walk      = {x = 168, y = 187},
	 mine      = {x = 189, y = 198},
	 walk_mine = {x = 200, y = 219},
	 -- Extra animations (not currently used by the game).
	 sit      = { x = 81, y = 160},
      },
   })

-- Player stats and animations
local player_model = {}
local player_textures = {}
local player_anim = {}
local player_sneak = {}
default.player_attached = {}

function default.player_get_animation(player)
   local name = player:get_player_name()
   return {
      model = player_model[name],
      textures = player_textures[name],
      animation = player_anim[name],
   }
end

-- Called when a player's appearance needs to be updated
function default.player_set_model(player, model_name)
   local name = player:get_player_name()
   local model = models[model_name]

   if player_model[name] == model_name then
      return
   end

   player:set_properties(
      {
	 mesh = model_name,
	 textures = player_textures[name] or model.textures,
	 visual = "mesh",
	 visual_size = model.visual_size or {x = 1, y = 1},
      })
   default.player_set_animation(player, "stand")

   player_model[name] = model_name
end

function default.player_get_textures(player)
   if player.get_properties ~= nil then
      return player:get_properties().textures
   else
      return player_textures[player:get_player_name()]
   end
end

function default.player_set_textures(player, textures)
   local name = player:get_player_name()

   player_textures[name] = textures
   player:set_properties({textures = textures,})
end

function default.player_set_animation(player, anim_name, speed)
   local name = player:get_player_name()

   if player_anim[name] == anim_name then
      return
   end

   local model = player_model[name] and models[player_model[name]]
   if not (model and model.animations[anim_name]) then
      return
   end

   local anim = model.animations[anim_name]
   player_anim[name] = anim_name
   player:set_animation(anim, speed or model.animation_speed, animation_blend)
end

-- Update appearance when the player joins
minetest.register_on_joinplayer(
   function(player)
      default.player_attached[player:get_player_name()] = false
      default.player_set_model(player, "character.b3d")
      player:set_local_animation({x = 0, y = 79}, {x = 168, y = 187}, {x = 189, y = 198}, {x = 200, y = 219}, player_animation_speed)
   end)

minetest.register_on_leaveplayer(
   function(player)
      local name = player:get_player_name()
      player_model[name] = nil
      player_anim[name] = nil
      player_textures[name] = nil
   end)

-- Localize for better performance.
local player_set_animation = default.player_set_animation
local player_attached = default.player_attached

-- Check each player and apply animations
minetest.register_globalstep(
   function(dtime)
      for _, player in pairs(minetest.get_connected_players()) do
	 local name = player:get_player_name()
	 local model_name = player_model[name]
	 local model = model_name and models[model_name]
	 local controls = player:get_player_control()

	 if player_sneak[name] ~= controls.sneak then
	    if controls.sneak then
	       player:set_nametag_attributes({color = {a = 30, r = 255, g = 255, b = 255}})
	    else
	       player:set_nametag_attributes({color = {a = 255, r = 255, g = 255, b = 255}})
	    end
	 end

	 if model and not player_attached[name] then
	    local walking = false
	    local animation_speed_mod = model.animation_speed or player_animation_speed

	    -- Determine if the player is walking
	    if controls.up or controls.down or controls.left or controls.right then
	       walking = true
	    end

	    -- Determine if the player is sneaking, and reduce animation speed if so
	    if controls.sneak then
	       animation_speed_mod = animation_speed_mod * 0.7
	    end

	    -- Apply animations based on what the player is doing
	    if player:get_hp() == 0 then -- dead
	       player_set_animation(player, "lay")
	    elseif walking then -- walking
	       if player_sneak[name] ~= controls.sneak then
		  player_anim[name] = nil
		  player_sneak[name] = controls.sneak
	       end
	       if controls.LMB then -- walking and mining
		  player_set_animation(player, "walk_mine", animation_speed_mod)
	       else -- walking
		  player_set_animation(player, "walk", animation_speed_mod)
	       end
	    elseif controls.LMB then -- mining
	       player_set_animation(player, "mine")
	    else -- standing
	       player_set_animation(player, "stand", animation_speed_mod)
	    end
	 end
      end
   end)