init.lua

   1 hud = {}
   2
   3 -- HUD statbar values
   4 hud.health = {}
   5 hud.air = {}
   6
   7 hud.hudtables = {}
   8
   9 -- number of registered HUD bars
  10 hud.hudbars_count = 0
  11
  12 -- HUD item ids
  13 local health_hud = {}
  14 local health_hud_text = {}
  15 local health_hud_icon = {}
  16 local health_hud_bg = {}
  17 local air_hud = {}
  18 local air_hud_text = {}
  19 local air_hud_icon = {}
  20 local air_hud_bg = {}
  21
  22 -- default settings
  23
  24 HUD_SCALEABLE = false
  25 HUD_BARLENGTH = 160
  26
  27  -- statbar positions
  28 HUD_HEALTH_POS = {x=0.5,y=0.9}
  29 HUD_HEALTH_OFFSET = {x=-175, y=2}
  30 HUD_AIR_POS = {x=0.5,y=0.9}
  31 HUD_AIR_OFFSET = {x=15,y=2}
  32
  33 -- dirty way to check for new statbars
  34 if dump(minetest.hud_replace_builtin) ~= "nil" then
  35         HUD_SCALEABLE = true
  36         HUD_HEALTH_POS = {x=0.5,y=1}
  37         HUD_HEALTH_OFFSET = {x=-175, y=-70}
  38         HUD_AIR_POS = {x=0.5,y=1}
  39         HUD_AIR_OFFSET = {x=15,y=-70}
  40 end
  41
  42 HUD_CUSTOM_POS_LEFT = HUD_HEALTH_POS
  43 HUD_CUSTOM_POS_RIGHT = HUD_AIR_POS
  44
  45 HUD_CUSTOM_VMARGIN = 24
  46 if minetest.setting_getbool("enable_damage") then
  47         HUD_CUSTOM_START_OFFSET_LEFT = {x=HUD_HEALTH_OFFSET.x, y=HUD_HEALTH_OFFSET.y - HUD_CUSTOM_VMARGIN}
  48         HUD_CUSTOM_START_OFFSET_RIGHT = {x=HUD_AIR_OFFSET.x, y=HUD_AIR_OFFSET.y - HUD_CUSTOM_VMARGIN}
  49 else
  50         HUD_CUSTOM_START_OFFSET_LEFT = {x=HUD_HEALTH_OFFSET.x, y=HUD_HEALTH_OFFSET.y }
  51         HUD_CUSTOM_START_OFFSET_RIGHT = {x=HUD_AIR_OFFSET.x, y=HUD_AIR_OFFSET.y }
  52 end
  53
  54 HUD_TICK = 0.1
  55
  56 function hud.value_to_barlength(value, max)
  57         if max == 0 then
  58                 return 0
  59         else
  60                 return math.ceil((value/max) * HUD_BARLENGTH)
  61         end
  62 end
  63
  64 function hud.get_hudtable(identifier)
  65         return hud.hudtables[identifier]
  66 end
  67
  68 function hud.register_hudbar(identifier, text_color, label, textures, default_start_value, default_start_max, start_hide, format_string)
  69         local hudtable = {}
  70         local pos, offset
  71         if hud.hudbars_count % 2 == 0 then
  72                 pos = HUD_CUSTOM_POS_LEFT
  73                 offset = {
  74                         x = HUD_CUSTOM_START_OFFSET_LEFT.x,
  75                         y = HUD_CUSTOM_START_OFFSET_LEFT.y - HUD_CUSTOM_VMARGIN * math.floor(hud.hudbars_count/2)
  76                 }
  77         else
  78                 pos = HUD_CUSTOM_POS_RIGHT
  79                 offset = {
  80                         x = HUD_CUSTOM_START_OFFSET_RIGHT.x,
  81                         y = HUD_CUSTOM_START_OFFSET_RIGHT.y - HUD_CUSTOM_VMARGIN * math.floor((hud.hudbars_count-1)/2)
  82                 }
  83         end
  84         if format_string == nil then
  85                 format_string = "%s: %d/%d"
  86         end
  87
  88         hudtable.add_all = function(player, start_value, start_max)
  89                 if start_value == nil then start_value = default_start_value end
  90                 if start_max == nil then start_max = default_start_max end
  91                 local ids = {}
  92                 local state = {}
  93                 local name = player:get_player_name()
  94                 local bgscale
  95                 if start_max == 0 then
  96                         bgscale = { x=0, y=0 }
  97                 else
  98                         bgscale = { x=1, y=1 }
  99                 end
 100                 ids.bg = player:hud_add({
 101                         hud_elem_type = "image",
 102                         position = pos,
 103                         scale = bgscale,
 104                         text = "hudbars_bar_background.png",
 105                         alignment = {x=1,y=1},
 106                         offset = { x = offset.x - 1, y = offset.y - 1 },
 107                 })
 108                 if textures.icon ~= nil then
 109                         ids.icon = player:hud_add({
 110                                 hud_elem_type = "image",
 111                                 position = pos,
 112                                 scale = { x = 1, y = 1 },
 113                                 text = textures.icon,
 114                                 alignment = {x=-1,y=1},
 115                                 offset = { x = offset.x - 3, y = offset.y },
 116                         })
 117                 end
 118                 ids.bar = player:hud_add({
 119                         hud_elem_type = "statbar",
 120                         position = pos,
 121                         text = textures.bar,
 122                         number = hud.value_to_barlength(start_value, start_max),
 123                         alignment = {x=-1,y=-1},
 124                         offset = offset,
 125                 })
 126                 ids.text = player:hud_add({
 127                         hud_elem_type = "text",
 128                         position = pos,
 129                         text = tostring(string.format(format_string, label, start_value, start_max)),
 130                         alignment = {x=1,y=1},
 131                         number = text_color,
 132                         direction = 0,
 133                         offset = { x = offset.x + 2,  y = offset.y },
 134                 })
 135                 state.hidden = start_hide
 136                 state.value = start_value
 137                 state.max = start_max
 138
 139                 hud.hudtables[identifier].hudids[name] = ids
 140                 hud.hudtables[identifier].hudstate[name] = state
 141         end
 142
 143         hudtable.identifier = identifier
 144         hudtable.format_string = format_string
 145         hudtable.label = label
 146         hudtable.hudids = {}
 147         hudtable.hudstate = {}
 148
 149         hud.hudbars_count= hud.hudbars_count + 1
 150
 151         hud.hudtables[identifier] = hudtable
 152 end
 153
 154 function hud.init_hudbar(player, identifier, start_value, start_max)
 155         hud.hudtables[identifier].add_all(player, start_value, start_max)
 156 end
 157
 158 function hud.change_hudbar(player, identifier, new_value, new_max_value)
 159         if new_value == nil and new_max_value == nil then
 160                 return
 161         end
 162
 163         local name = player:get_player_name()
 164         local hudtable = hud.get_hudtable(identifier)
 165
 166         if new_value ~= nil then
 167                 hudtable.hudstate[name].value = new_value
 168         else
 169                 new_value = hudtable.hudstate[name].value
 170         end
 171         if new_max_value ~= nil then
 172                 hudtable.hudstate[name].max = new_max_value
 173         else
 174                 new_max_value = hudtable.hudstate[name].max
 175         end
 176
 177         if hudtable.hudstate[name].hidden == false then
 178                 if hudtable.hudstate[name].max == 0 then
 179                         player:hud_change(hudtable.hudids[name].bg, "scale", {x=0,y=0})
 180                 else
 181                         player:hud_change(hudtable.hudids[name].bg, "scale", {x=1,y=1})
 182                 end
 183                 player:hud_change(hudtable.hudids[name].bar, "number", hud.value_to_barlength(new_value, new_max_value))
 184                 player:hud_change(hudtable.hudids[name].text, "text",
 185                         tostring(string.format(hudtable.format_string, hudtable.label, new_value, new_max_value))
 186                 )
 187         end
 188 end
 189
 190 function hud.hide_hudbar(player, identifier)
 191         local name = player:get_player_name()
 192         local hudtable = hud.get_hudtable(identifier)
 193         if(hudtable.hudstate[name].hidden == false) then
 194                 player:hud_change(hudtable.hudids[name].icon, "scale", {x=0,y=0})
 195                 player:hud_change(hudtable.hudids[name].bg, "scale", {x=0,y=0})
 196                 player:hud_change(hudtable.hudids[name].bar, "number", 0)
 197                 player:hud_change(hudtable.hudids[name].text, "text", "")
 198                 hudtable.hudstate[name].hidden = true
 199         end
 200 end
 201
 202 function hud.unhide_hudbar(player, identifier)
 203         local name = player:get_player_name()
 204         local hudtable = hud.get_hudtable(identifier)
 205         if(hudtable.hudstate[name].hidden) then
 206                 local name = player:get_player_name()
 207                 local value = hudtable.hudstate[name].value
 208                 local max = hudtable.hudstate[name].max
 209                 player:hud_change(hudtable.hudids[name].icon, "scale", {x=1,y=1})
 210                 if hudtable.hudstate[name].max ~= 0 then
 211                         player:hud_change(hudtable.hudids[name].bg, "scale", {x=1,y=1})
 212                 end
 213                 player:hud_change(hudtable.hudids[name].bar, "number", hud.value_to_barlength(value, max))
 214                 player:hud_change(hudtable.hudids[name].text, "text", tostring(string.format(hudtable.format_string, hudtable.label, value, max)))
 215                 hudtable.hudstate[name].hidden = false
 216         end
 217 end
 218
 219
 220 --load custom settings
 221 local set = io.open(minetest.get_modpath("hudbars").."/hud.conf", "r")
 222 if set then
 223         dofile(minetest.get_modpath("hudbars").."/hud.conf")
 224         set:close()
 225 end
 226
 227 local function hide_builtin(player)
 228          player:hud_set_flags({crosshair = true, hotbar = true, healthbar = false, wielditem = true, breathbar = false})
 229 end
 230
 231
 232 local function custom_hud(player)
 233  local name = player:get_player_name()
 234
 235  if minetest.setting_getbool("enable_damage") then
 236  --health
 237         health_hud_icon[name] = player:hud_add({
 238                 hud_elem_type = "image",
 239                 position = HUD_HEALTH_POS,
 240                 scale = { x = 1, y = 1 },
 241                 text = "hudbars_icon_health.png",
 242                 alignment = {x=-1,y=1},
 243                 offset = { x = HUD_HEALTH_OFFSET.x - 3, y = HUD_HEALTH_OFFSET.y },
 244         })
 245         health_hud_bg[name] = player:hud_add({
 246                 hud_elem_type = "image",
 247                 position = HUD_HEALTH_POS,
 248                 scale = { x = 1, y = 1 },
 249                 text = "hudbars_bar_background.png",
 250                 alignment = {x=1,y=1},
 251                 offset = { x = HUD_HEALTH_OFFSET.x - 1, y = HUD_HEALTH_OFFSET.y - 1 },
 252         })
 253         health_hud[name] = player:hud_add({
 254                 hud_elem_type = "statbar",
 255                 position = HUD_HEALTH_POS,
 256                 text = "hudbars_bar_health.png",
 257                 number = hud.value_to_barlength(player:get_hp(), 20),
 258                 alignment = {x=-1,y=-1},
 259                 offset = HUD_HEALTH_OFFSET,
 260         })
 261         health_hud_text[name] = player:hud_add({
 262                 hud_elem_type = "text",
 263                 position = HUD_HEALTH_POS,
 264                 text = tostring(string.format("Health: %d/%d", player:get_hp(), 20)),
 265                 alignment = {x=1,y=1},
 266                 number = 0xFFFFFF,
 267                 direction = 0,
 268                 offset = { x = HUD_HEALTH_OFFSET.x + 2,  y = HUD_HEALTH_OFFSET.y },
 269         })
 270
 271  --air
 272         local airnumber, airtext, airscale
 273         local air = player:get_breath()
 274         if air == 11 then
 275                 airnumber = 0
 276                 airtext = ""
 277                 airscale = {x=0, y=0}
 278         else
 279                 airnumber = hud.value_to_barlength(math.min(air, 10), 10)
 280                 airtext = tostring(string.format("Breath: %d/%d", math.min(air, 10), 10))
 281                 airscale = {x=1, y=1}
 282         end
 283         air_hud_icon[name] = player:hud_add({
 284                 hud_elem_type = "image",
 285                 position = HUD_AIR_POS,
 286                 scale = airscale,
 287                 text = "hudbars_icon_breath.png",
 288                 alignment = {x=-1,y=1},
 289                 offset = { x = HUD_AIR_OFFSET.x - 3, y = HUD_AIR_OFFSET.y },
 290         })
 291         air_hud_bg[name] = player:hud_add({
 292                 hud_elem_type = "image",
 293                 position = HUD_AIR_POS,
 294                 scale = airscale,
 295                 text = "hudbars_bar_background.png",
 296                 alignment = {x=1,y=1},
 297                 offset = { x = HUD_AIR_OFFSET.x - 1, y = HUD_AIR_OFFSET.y - 1 },
 298         })
 299         air_hud[name] = player:hud_add({
 300                 hud_elem_type = "statbar",
 301                 position = HUD_AIR_POS,
 302                 text = "hudbars_bar_breath.png",
 303                 number = airnumber,
 304                 alignment = {x=-1,y=-1},
 305                 offset = HUD_AIR_OFFSET,
 306         })
 307         air_hud_text[name] = player:hud_add({
 308                 hud_elem_type = "text",
 309                 position = HUD_AIR_POS,
 310                 text = airtext,
 311                 alignment = {x=1,y=1},
 312                 number = 0xFFFFFF,
 313                 direction = 0,
 314                 offset = { x = HUD_AIR_OFFSET.x + 2,  y = HUD_AIR_OFFSET.y },
 315         })
 316
 317  end
 318 end
 319
 320
 321 -- update hud elemtens if value has changed
 322 local function update_hud(player)
 323         local name = player:get_player_name()
 324  --air
 325         local air = tonumber(hud.air[name])
 326         if player:get_breath() ~= air then
 327                 air = player:get_breath()
 328                 hud.air[name] = air
 329                 local airnumber, airtext, airscale
 330                 if air == 11 then
 331                         airnumber = 0
 332                         airtext = ""
 333                         airscale = {x=0, y=0}
 334                 else
 335                         airnumber = hud.value_to_barlength(math.min(air, 10), 10)
 336                         airtext = tostring(string.format("Breath: %d/%d", math.min(player:get_breath(), 10), 10))
 337                         airscale = {x=1, y=1}
 338                 end
 339                 player:hud_change(air_hud[name], "number", airnumber)
 340                 player:hud_change(air_hud_text[name], "text", airtext)
 341                 player:hud_change(air_hud_icon[name], "scale", airscale)
 342                 player:hud_change(air_hud_bg[name], "scale", airscale)
 343         end
 344  --health
 345         local hp = tonumber(hud.health[name])
 346         if player:get_hp() ~= hp then
 347                 hp = player:get_hp()
 348                 hud.health[name] = hp
 349                 player:hud_change(health_hud[name], "number", hud.value_to_barlength(hp, 20))
 350                 player:hud_change(health_hud_text[name], "text",
 351                         tostring(string.format("Health: %d/%d", hp, 20))
 352                 )
 353         end
 354
 355 end
 356
 357 minetest.register_on_joinplayer(function(player)
 358         local name = player:get_player_name()
 359         local inv = player:get_inventory()
 360         hud.health[name] = player:get_hp()
 361         local air = player:get_breath()
 362         hud.air[name] = air
 363         minetest.after(0.5, function()
 364                 hide_builtin(player)
 365                 custom_hud(player)
 366         end)
 367 end)
 368
 369 local main_timer = 0
 370 local timer = 0
 371 local timer2 = 0
 372 minetest.after(2.5, function()
 373         minetest.register_globalstep(function(dtime)
 374          main_timer = main_timer + dtime
 375          timer = timer + dtime
 376          timer2 = timer2 + dtime
 377                 if main_timer > HUD_TICK or timer > 4 then
 378                  if main_timer > HUD_TICK then main_timer = 0 end
 379                  for _,player in ipairs(minetest.get_connected_players()) do
 380                         local name = player:get_player_name()
 381
 382                         -- only proceed if damage is enabled
 383                         if minetest.setting_getbool("enable_damage") then
 384                          local hp = player:get_hp()
 385
 386                          -- update all hud elements
 387                          update_hud(player)
 388
 389                         end
 390                  end
 391
 392                 end
 393                 if timer > 4 then timer = 0 end
 394         end)
 395 end)