mods/player_api/api.lua

   1 -- Minetest 0.4 mod: player
   2 -- See README.txt for licensing and other information.
   3
   4 player_api = {}
   5
   6 -- Player animation blending
   7 -- Note: This is currently broken due to a bug in Irrlicht, leave at 0
   8 local animation_blend = 0
   9
  10 player_api.registered_models = { }
  11
  12 -- Local for speed.
  13 local models = player_api.registered_models
  14
  15 function player_api.register_model(name, def)
  16         models[name] = def
  17 end
  18
  19 -- Player stats and animations
  20 local player_model = {}
  21 local player_textures = {}
  22 local wielded_item = {}
  23 local player_anim = {}
  24 local player_sneak = {}
  25 player_api.player_attached = {}
  26
  27
  28 --modify the player's wielded item
  29 function player_api.set_wielded_item(player)
  30         local name = player:get_player_name()
  31
  32
  33         --local model = models[model_name]
  34         if not wielded_item[name] or not wielded_item[name]:get_luaentity() then
  35                 wielded_item[name] = nil
  36                 --we give the player an item to hold
  37                 local itemstring = player:get_wielded_item():get_name()
  38
  39                 local wield_item = minetest.add_entity(player:get_pos(),"player_api:item")
  40                 if wield_item then
  41
  42                         wield_item:get_luaentity():set_item(itemstring)
  43
  44                         wield_item:get_luaentity().wielder = player:get_player_name()
  45
  46                         wield_item:set_attach(player, "Right_Hand", vector.new(0,0,0), vector.new(0,0,0))
  47
  48                         wielded_item[name] = wield_item
  49                 end
  50                 return
  51         end
  52
  53
  54         local itemstring = wielded_item[name]:get_luaentity().itemstring
  55         local player_wield_item = player:get_wielded_item():get_name()
  56
  57         if itemstring ~= player_wield_item then
  58                 wielded_item[name]:get_luaentity().itemstring = player_wield_item
  59                 wielded_item[name]:get_luaentity():set_item(player_wield_item)
  60         end
  61 end
  62
  63
  64
  65 function player_api.get_animation(player)
  66         local name = player:get_player_name()
  67         return {
  68                 model = player_model[name],
  69                 textures = player_textures[name],
  70                 animation = player_anim[name],
  71         }
  72 end
  73
  74 -- Called when a player's appearance needs to be updated
  75 function player_api.set_model(player, model_name)
  76         local name = player:get_player_name()
  77         local model = models[model_name]
  78         if player_model[name] == model_name then
  79                 return
  80         end
  81         player:set_properties({
  82                 mesh = model_name,
  83                 textures = player_textures[name] or model.textures,
  84                 visual = "mesh",
  85                 visual_size = model.visual_size or {x = 1, y = 1},
  86                 collisionbox = model.collisionbox or {-0.3, 0.0, -0.3, 0.3, 1.7, 0.3},
  87                 stepheight = model.stepheight or 0.6,
  88                 eye_height = model.eye_height or 1.47,
  89         })
  90         player_api.set_animation(player, "stand")
  91         player_model[name] = model_name
  92 end
  93
  94 function player_api.set_textures(player, textures)
  95         local name = player:get_player_name()
  96         local model = models[player_model[name]]
  97         local model_textures = model and model.textures or nil
  98         player_textures[name] = textures or model_textures
  99         player:set_properties({textures = textures or model_textures,})
 100 end
 101
 102 function player_api.set_animation(player, anim_name, speed)
 103         local name = player:get_player_name()
 104         if player_anim[name] == anim_name then
 105                 return
 106         end
 107         local model = player_model[name] and models[player_model[name]]
 108         if not (model and model.animations[anim_name]) then
 109                 return
 110         end
 111         local anim = model.animations[anim_name]
 112
 113
 114         --calculate local animation
 115         --update player's frame speed
 116
 117         local local_player_animation = player:get_local_animation()
 118         local idle_animation = {x = 0,   y = 79}
 119         local walk_animation = {x = 168, y = 187}
 120         local dig_animation =  {x = 189, y = 198}
 121         local walk_and_dig =   {x = 200, y = 219}
 122         local sneak_speed = nil
 123         local opacity = 255
 124         if anim_name == "sneak" or anim_name == "sneak_mine_stand" or anim_name == "sneak_walk" or anim_name == "sneak_mine_walk" then
 125                 idle_animation = model.animations.sneak
 126                 walk_animation = model.animations.sneak_walk
 127                 dig_animation =  model.animations.sneak_mine_stand
 128                 walk_and_dig =   model.animations.sneak_mine_walk
 129                 sneak_speed = 16
 130                 opacity = 0
 131         end
 132
 133         --update the external animation speed that other players see
 134         local sneaker_speed = speed
 135         if sneak_speed then
 136                 sneaker_speed = sneak_speed
 137         end
 138
 139         player:set_local_animation(
 140                 idle_animation,--idle
 141                 walk_animation,--walk
 142                 dig_animation,--dig
 143                 walk_and_dig,--walk and dig
 144                 speed
 145         )
 146         player:set_nametag_attributes(
 147         {color = {
 148                 r = 255,
 149                 b = 255,
 150                 a = opacity,
 151                 g = 255
 152         }
 153         })
 154         player_api.set_model(player, "character.b3d")
 155         player_anim[name] = anim_name
 156         player:set_animation(anim, sneaker_speed, animation_blend)
 157 end
 158
 159 minetest.register_on_leaveplayer(function(player)
 160         local name = player:get_player_name()
 161         player_model[name] = nil
 162         player_anim[name] = nil
 163         player_textures[name] = nil
 164 end)
 165
 166 -- Localize for better performance.
 167 local player_set_animation = player_api.set_animation
 168 local player_attached = player_api.player_attached
 169
 170 -- Prevent knockback for attached players
 171 local old_calculate_knockback = minetest.calculate_knockback
 172 function minetest.calculate_knockback(player, ...)
 173         if player_attached[player:get_player_name()] then
 174                 return 0
 175         end
 176         return old_calculate_knockback(player, ...)
 177 end
 178
 179 --converts yaw to degrees
 180 local degrees = function(yaw)
 181         return(yaw*180.0/math.pi)
 182 end
 183
 184 -- Check each player and apply animations
 185 minetest.register_globalstep(function()
 186         for _, player in pairs(minetest.get_connected_players()) do
 187                 --update the player wielded item model
 188                 player_api.set_wielded_item(player)
 189
 190                 local name = player:get_player_name()
 191                 local model_name = player_model[name]
 192                 local model = model_name and models[model_name]
 193                 if model and not player_attached[name] then
 194                         local controls = player:get_player_control()
 195                         local animation_speed_mod = model.animation_speed or 30
 196
 197                         -- Determine if the player is sneaking, and reduce animation speed if so
 198                         --if controls.sneak then
 199                         --      animation_speed_mod = 0
 200                         --end
 201
 202                         local meta = player:get_meta()
 203                         local movement_state = meta:get_string("player.player_movement_state")
 204
 205                         local pitch = -degrees(player:get_look_vertical())
 206                         if movement_state == "3" then
 207                                 pitch = pitch + 15
 208                         end
 209                         player:set_bone_position("Head", vector.new(0,6.3,0), vector.new(pitch,0,0))
 210
 211
 212                         -- Apply animations based on what the player is doing
 213                         if player:get_hp() == 0 then
 214                                 player_set_animation(player, "lay")
 215                         elseif movement_state == "0" then
 216                                 --walking normal
 217                                 if controls.up or controls.down or controls.left or controls.right then
 218                                         if controls.LMB or controls.RMB then
 219                                                 player_set_animation(player, "walk_mine", animation_speed_mod)
 220                                         else
 221                                                 player_set_animation(player, "walk", animation_speed_mod)
 222                                         end
 223                                 else
 224                                         if controls.LMB or controls.RMB then
 225                                                 player_set_animation(player, "mine", animation_speed_mod)
 226                                         else
 227                                                 player_set_animation(player, "stand", animation_speed_mod)
 228                                         end
 229                                 end
 230                         elseif movement_state == "1" then
 231                                 --running
 232                                 if controls.up or controls.down or controls.left or controls.right then
 233                                         if controls.LMB or controls.RMB then
 234                                                 player_set_animation(player, "walk_mine", animation_speed_mod*1.5)
 235                                         else
 236                                                 player_set_animation(player, "walk", animation_speed_mod*1.5)
 237                                         end
 238                                 else
 239                                         if controls.LMB or controls.RMB then
 240                                                 player_set_animation(player, "mine", animation_speed_mod*1.5)
 241                                         else
 242                                                 player_set_animation(player, "stand", animation_speed_mod*1.5)
 243                                         end
 244                                 end
 245                         elseif movement_state == "2" then
 246                                 --bunnyhopping
 247                                 if controls.up or controls.down or controls.left or controls.right then
 248                                         if controls.LMB or controls.RMB then
 249                                                 player_set_animation(player, "walk_mine", animation_speed_mod*1.75)
 250                                         else
 251                                                 player_set_animation(player, "walk", animation_speed_mod*1.75)
 252                                         end
 253                                 else
 254                                         if controls.LMB or controls.RMB then
 255                                                 player_set_animation(player, "mine", animation_speed_mod*1.75)
 256                                         else
 257                                                 player_set_animation(player, "stand", animation_speed_mod*1.75)
 258                                         end
 259                                 end
 260                         elseif movement_state == "3" then
 261                                 --sneaking
 262                                 if controls.up or controls.down or controls.left or controls.right then
 263                                         if controls.LMB or controls.RMB then
 264                                                 player_set_animation(player, "sneak_mine_walk", 30)
 265                                         else
 266                                                 player_set_animation(player, "sneak_walk", 30)
 267                                         end
 268                                 else
 269                                         if controls.LMB or controls.RMB then
 270                                                 player_set_animation(player, "sneak_mine_stand", 30)
 271                                         else
 272                                                 player_set_animation(player, "sneak", 30)
 273                                         end
 274                                 end
 275                         --safety catches
 276                         elseif controls.LMB or controls.RMB then
 277                                 player_set_animation(player, "mine", animation_speed_mod)
 278                         else
 279                                 player_set_animation(player, "sneak", animation_speed_mod)
 280                         end
 281                 end
 282         end
 283 end)