init.lua

   1 hb = {}
   2
   3 -- HUD statbar values
   4 hb.health = {}
   5 hb.air = {}
   6
   7 hb.hudtables = {}
   8
   9 -- number of registered HUD bars
  10 hb.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 hb.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 hb.get_hudtable(identifier)
  65         return hb.hudtables[identifier]
  66 end
  67
  68 function hb.register_hudbar(identifier, text_color, label, textures, default_start_value, default_start_max, start_hidden, format_string)
  69         local hudtable = {}
  70         local pos, offset
  71         if hb.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(hb.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((hb.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 = hb.value_to_barlength(start_value, start_max),
 123                         alignment = {x=-1,y=-1},
 124                         offset = offset,
 125                 })
 126                 local text = string.format(format_string, label, start_value, start_max)
 127                 ids.text = player:hud_add({
 128                         hud_elem_type = "text",
 129                         position = pos,
 130                         text = text,
 131                         alignment = {x=1,y=1},
 132                         number = text_color,
 133                         direction = 0,
 134                         offset = { x = offset.x + 2,  y = offset.y },
 135                 })
 136                 state.hidden = start_hidden
 137                 state.value = start_value
 138                 state.max = start_max
 139                 state.text = text
 140                 state.barlength = hb.value_to_barlength(start_value, start_max)
 141
 142                 hb.hudtables[identifier].hudids[name] = ids
 143                 hb.hudtables[identifier].hudstate[name] = state
 144         end
 145
 146         hudtable.identifier = identifier
 147         hudtable.format_string = format_string
 148         hudtable.label = label
 149         hudtable.hudids = {}
 150         hudtable.hudstate = {}
 151
 152         hb.hudbars_count= hb.hudbars_count + 1
 153
 154         hb.hudtables[identifier] = hudtable
 155 end
 156
 157 function hb.init_hudbar(player, identifier, start_value, start_max)
 158         hb.hudtables[identifier].add_all(player, start_value, start_max)
 159 end
 160
 161 function hb.change_hudbar(player, identifier, new_value, new_max_value)
 162         if new_value == nil and new_max_value == nil then
 163                 return
 164         end
 165
 166         local name = player:get_player_name()
 167         local hudtable = hb.get_hudtable(identifier)
 168         local value_changed, max_changed = false, false
 169
 170         if new_value ~= nil then
 171                 if new_value ~= hudtable.hudstate[name].value then
 172                         hudtable.hudstate[name].value = new_value
 173                         value_changed = true
 174                 end
 175         else
 176                 new_value = hudtable.hudstate[name].value
 177         end
 178         if new_max_value ~= nil then
 179                 if new_max_value ~= hudtable.hudstate[name].max then
 180                         hudtable.hudstate[name].max = new_max_value
 181                         max_changed = true
 182                 end
 183         else
 184                 new_max_value = hudtable.hudstate[name].max
 185         end
 186
 187         if hudtable.hudstate[name].hidden == false then
 188                 if max_changed then
 189                         if hudtable.hudstate[name].max == 0 then
 190                                 player:hud_change(hudtable.hudids[name].bg, "scale", {x=0,y=0})
 191                         else
 192                                 player:hud_change(hudtable.hudids[name].bg, "scale", {x=1,y=1})
 193                         end
 194                 end
 195
 196                 if value_changed or max_changed then
 197                         local new_barlength = hb.value_to_barlength(new_value, new_max_value)
 198                         if new_barlength ~= hudtable.hudstate[name].barlength then
 199                                 player:hud_change(hudtable.hudids[name].bar, "number", hb.value_to_barlength(new_value, new_max_value))
 200                                 hudtable.hudstate[name].barlength = new_barlength
 201                         end
 202
 203                         local new_text = string.format(hudtable.format_string, hudtable.label, new_value, new_max_value)
 204                         if new_text ~= hudtable.hudstate[name].text then
 205                                 player:hud_change(hudtable.hudids[name].text, "text", new_text)
 206                                 hudtable.hudstate[name].text = new_text
 207                         end
 208                 end
 209         end
 210 end
 211
 212 function hb.hide_hudbar(player, identifier)
 213         local name = player:get_player_name()
 214         local hudtable = hb.get_hudtable(identifier)
 215         if(hudtable.hudstate[name].hidden == false) then
 216                 player:hud_change(hudtable.hudids[name].icon, "scale", {x=0,y=0})
 217                 player:hud_change(hudtable.hudids[name].bg, "scale", {x=0,y=0})
 218                 player:hud_change(hudtable.hudids[name].bar, "number", 0)
 219                 player:hud_change(hudtable.hudids[name].text, "text", "")
 220                 hudtable.hudstate[name].hidden = true
 221         end
 222 end
 223
 224 function hb.unhide_hudbar(player, identifier)
 225         local name = player:get_player_name()
 226         local hudtable = hb.get_hudtable(identifier)
 227         if(hudtable.hudstate[name].hidden) then
 228                 local name = player:get_player_name()
 229                 local value = hudtable.hudstate[name].value
 230                 local max = hudtable.hudstate[name].max
 231                 player:hud_change(hudtable.hudids[name].icon, "scale", {x=1,y=1})
 232                 if hudtable.hudstate[name].max ~= 0 then
 233                         player:hud_change(hudtable.hudids[name].bg, "scale", {x=1,y=1})
 234                 end
 235                 player:hud_change(hudtable.hudids[name].bar, "number", hb.value_to_barlength(value, max))
 236                 player:hud_change(hudtable.hudids[name].text, "text", tostring(string.format(hudtable.format_string, hudtable.label, value, max)))
 237                 hudtable.hudstate[name].hidden = false
 238         end
 239 end
 240
 241
 242 --load custom settings
 243 local set = io.open(minetest.get_modpath("hudbars").."/hudbars.conf", "r")
 244 if set then
 245         dofile(minetest.get_modpath("hudbars").."/hudbars.conf")
 246         set:close()
 247 end
 248
 249 local function hide_builtin(player)
 250          player:hud_set_flags({crosshair = true, hotbar = true, healthbar = false, wielditem = true, breathbar = false})
 251 end
 252
 253
 254 local function custom_hud(player)
 255  local name = player:get_player_name()
 256
 257  if minetest.setting_getbool("enable_damage") then
 258  --health
 259         health_hud_icon[name] = player:hud_add({
 260                 hud_elem_type = "image",
 261                 position = HUD_HEALTH_POS,
 262                 scale = { x = 1, y = 1 },
 263                 text = "hudbars_icon_health.png",
 264                 alignment = {x=-1,y=1},
 265                 offset = { x = HUD_HEALTH_OFFSET.x - 3, y = HUD_HEALTH_OFFSET.y },
 266         })
 267         health_hud_bg[name] = player:hud_add({
 268                 hud_elem_type = "image",
 269                 position = HUD_HEALTH_POS,
 270                 scale = { x = 1, y = 1 },
 271                 text = "hudbars_bar_background.png",
 272                 alignment = {x=1,y=1},
 273                 offset = { x = HUD_HEALTH_OFFSET.x - 1, y = HUD_HEALTH_OFFSET.y - 1 },
 274         })
 275         health_hud[name] = player:hud_add({
 276                 hud_elem_type = "statbar",
 277                 position = HUD_HEALTH_POS,
 278                 text = "hudbars_bar_health.png",
 279                 number = hb.value_to_barlength(player:get_hp(), 20),
 280                 alignment = {x=-1,y=-1},
 281                 offset = HUD_HEALTH_OFFSET,
 282         })
 283         health_hud_text[name] = player:hud_add({
 284                 hud_elem_type = "text",
 285                 position = HUD_HEALTH_POS,
 286                 text = tostring(string.format("Health: %d/%d", player:get_hp(), 20)),
 287                 alignment = {x=1,y=1},
 288                 number = 0xFFFFFF,
 289                 direction = 0,
 290                 offset = { x = HUD_HEALTH_OFFSET.x + 2,  y = HUD_HEALTH_OFFSET.y },
 291         })
 292
 293  --air
 294         local airnumber, airtext, airscale
 295         local air = player:get_breath()
 296         if air == 11 then
 297                 airnumber = 0
 298                 airtext = ""
 299                 airscale = {x=0, y=0}
 300         else
 301                 airnumber = hb.value_to_barlength(math.min(air, 10), 10)
 302                 airtext = tostring(string.format("Breath: %d/%d", math.min(air, 10), 10))
 303                 airscale = {x=1, y=1}
 304         end
 305         air_hud_icon[name] = player:hud_add({
 306                 hud_elem_type = "image",
 307                 position = HUD_AIR_POS,
 308                 scale = airscale,
 309                 text = "hudbars_icon_breath.png",
 310                 alignment = {x=-1,y=1},
 311                 offset = { x = HUD_AIR_OFFSET.x - 3, y = HUD_AIR_OFFSET.y },
 312         })
 313         air_hud_bg[name] = player:hud_add({
 314                 hud_elem_type = "image",
 315                 position = HUD_AIR_POS,
 316                 scale = airscale,
 317                 text = "hudbars_bar_background.png",
 318                 alignment = {x=1,y=1},
 319                 offset = { x = HUD_AIR_OFFSET.x - 1, y = HUD_AIR_OFFSET.y - 1 },
 320         })
 321         air_hud[name] = player:hud_add({
 322                 hud_elem_type = "statbar",
 323                 position = HUD_AIR_POS,
 324                 text = "hudbars_bar_breath.png",
 325                 number = airnumber,
 326                 alignment = {x=-1,y=-1},
 327                 offset = HUD_AIR_OFFSET,
 328         })
 329         air_hud_text[name] = player:hud_add({
 330                 hud_elem_type = "text",
 331                 position = HUD_AIR_POS,
 332                 text = airtext,
 333                 alignment = {x=1,y=1},
 334                 number = 0xFFFFFF,
 335                 direction = 0,
 336                 offset = { x = HUD_AIR_OFFSET.x + 2,  y = HUD_AIR_OFFSET.y },
 337         })
 338
 339  end
 340 end
 341
 342
 343 -- update hud elemtens if value has changed
 344 local function update_hud(player)
 345         local name = player:get_player_name()
 346  --air
 347         local air = tonumber(hb.air[name])
 348         if player:get_breath() ~= air then
 349                 air = player:get_breath()
 350                 hb.air[name] = air
 351                 local airnumber, airtext, airscale
 352                 if air == 11 then
 353                         airnumber = 0
 354                         airtext = ""
 355                         airscale = {x=0, y=0}
 356                 else
 357                         airnumber = hb.value_to_barlength(math.min(air, 10), 10)
 358                         airtext = tostring(string.format("Breath: %d/%d", math.min(player:get_breath(), 10), 10))
 359                         airscale = {x=1, y=1}
 360                 end
 361                 player:hud_change(air_hud[name], "number", airnumber)
 362                 player:hud_change(air_hud_text[name], "text", airtext)
 363                 player:hud_change(air_hud_icon[name], "scale", airscale)
 364                 player:hud_change(air_hud_bg[name], "scale", airscale)
 365         end
 366  --health
 367         local hp = tonumber(hb.health[name])
 368         if player:get_hp() ~= hp then
 369                 hp = player:get_hp()
 370                 hb.health[name] = hp
 371                 player:hud_change(health_hud[name], "number", hb.value_to_barlength(hp, 20))
 372                 player:hud_change(health_hud_text[name], "text",
 373                         tostring(string.format("Health: %d/%d", hp, 20))
 374                 )
 375         end
 376
 377 end
 378
 379 minetest.register_on_joinplayer(function(player)
 380         local name = player:get_player_name()
 381         local inv = player:get_inventory()
 382         hb.health[name] = player:get_hp()
 383         local air = player:get_breath()
 384         hb.air[name] = air
 385         minetest.after(0.5, function()
 386                 hide_builtin(player)
 387                 custom_hud(player)
 388         end)
 389 end)
 390
 391 local main_timer = 0
 392 local timer = 0
 393 local timer2 = 0
 394 minetest.after(2.5, function()
 395         minetest.register_globalstep(function(dtime)
 396          main_timer = main_timer + dtime
 397          timer = timer + dtime
 398          timer2 = timer2 + dtime
 399                 if main_timer > HUD_TICK or timer > 4 then
 400                  if main_timer > HUD_TICK then main_timer = 0 end
 401                  for _,player in ipairs(minetest.get_connected_players()) do
 402                         local name = player:get_player_name()
 403
 404                         -- only proceed if damage is enabled
 405                         if minetest.setting_getbool("enable_damage") then
 406                          local hp = player:get_hp()
 407
 408                          -- update all hud elements
 409                          update_hud(player)
 410
 411                         end
 412                  end
 413
 414                 end
 415                 if timer > 4 then timer = 0 end
 416         end)
 417 end)