builtin/game/statbars.lua

   1
   2 local health_bar_definition =
   3 {
   4         hud_elem_type = "statbar",
   5         position = { x=0.5, y=1 },
   6         text = "heart.png",
   7         number = 20,
   8         direction = 0,
   9         size = { x=24, y=24 },
  10         offset = { x=(-10*24)-25, y=-(48+24+16)},
  11 }
  12
  13 local breath_bar_definition =
  14 {
  15         hud_elem_type = "statbar",
  16         position = { x=0.5, y=1 },
  17         text = "bubble.png",
  18         number = 20,
  19         direction = 0,
  20         size = { x=24, y=24 },
  21         offset = {x=25,y=-(48+24+16)},
  22 }
  23
  24 local hud_ids = {}
  25
  26 local function initialize_builtin_statbars(player)
  27
  28         if not player:is_player() then
  29                 return
  30         end
  31
  32         local name = player:get_player_name()
  33
  34         if name == "" then
  35                 return
  36         end
  37
  38         if (hud_ids[name] == nil) then
  39                 hud_ids[name] = {}
  40                 -- flags are not transmitted to client on connect, we need to make sure
  41                 -- our current flags are transmitted by sending them actively
  42                 player:hud_set_flags(player:hud_get_flags())
  43         end
  44
  45         if player:hud_get_flags().healthbar and
  46                         core.is_yes(core.setting_get("enable_damage")) then
  47                 if hud_ids[name].id_healthbar == nil then
  48                         health_bar_definition.number = player:get_hp()
  49                         hud_ids[name].id_healthbar  = player:hud_add(health_bar_definition)
  50                 end
  51         else
  52                 if hud_ids[name].id_healthbar ~= nil then
  53                         player:hud_remove(hud_ids[name].id_healthbar)
  54                         hud_ids[name].id_healthbar = nil
  55                 end
  56         end
  57
  58         if (player:get_breath() < 11) then
  59                 if player:hud_get_flags().breathbar and
  60                         core.is_yes(core.setting_get("enable_damage")) then
  61                         if hud_ids[name].id_breathbar == nil then
  62                                 hud_ids[name].id_breathbar = player:hud_add(breath_bar_definition)
  63                         end
  64                 else
  65                         if hud_ids[name].id_breathbar ~= nil then
  66                                 player:hud_remove(hud_ids[name].id_breathbar)
  67                                 hud_ids[name].id_breathbar = nil
  68                         end
  69                 end
  70         elseif hud_ids[name].id_breathbar ~= nil then
  71                 player:hud_remove(hud_ids[name].id_breathbar)
  72                 hud_ids[name].id_breathbar = nil
  73         end
  74 end
  75
  76 local function cleanup_builtin_statbars(player)
  77
  78         if not player:is_player() then
  79                 return
  80         end
  81
  82         local name = player:get_player_name()
  83
  84         if name == "" then
  85                 return
  86         end
  87
  88         hud_ids[name] = nil
  89 end
  90
  91 local function player_event_handler(player,eventname)
  92         assert(player:is_player())
  93
  94         local name = player:get_player_name()
  95
  96         if name == "" then
  97                 return
  98         end
  99
 100         if eventname == "health_changed" then
 101                 initialize_builtin_statbars(player)
 102
 103                 if hud_ids[name].id_healthbar ~= nil then
 104                         player:hud_change(hud_ids[name].id_healthbar,"number",player:get_hp())
 105                         return true
 106                 end
 107         end
 108
 109         if eventname == "breath_changed" then
 110                 initialize_builtin_statbars(player)
 111
 112                 if hud_ids[name].id_breathbar ~= nil then
 113                         player:hud_change(hud_ids[name].id_breathbar,"number",player:get_breath()*2)
 114                         return true
 115                 end
 116         end
 117
 118         if eventname == "hud_changed" then
 119                 initialize_builtin_statbars(player)
 120                 return true
 121         end
 122
 123         return false
 124 end
 125
 126 function core.hud_replace_builtin(name, definition)
 127
 128         if definition == nil or
 129                 type(definition) ~= "table" or
 130                 definition.hud_elem_type ~= "statbar" then
 131                 return false
 132         end
 133
 134         if name == "health" then
 135                 health_bar_definition = definition
 136
 137                 for name,ids in pairs(hud_ids) do
 138                         local player = core.get_player_by_name(name)
 139                         if  player and hud_ids[name].id_healthbar then
 140                                 player:hud_remove(hud_ids[name].id_healthbar)
 141                                 initialize_builtin_statbars(player)
 142                         end
 143                 end
 144                 return true
 145         end
 146
 147         if name == "breath" then
 148                 breath_bar_definition = definition
 149
 150                 for name,ids in pairs(hud_ids) do
 151                         local player = core.get_player_by_name(name)
 152                         if  player and hud_ids[name].id_breathbar then
 153                                 player:hud_remove(hud_ids[name].id_breathbar)
 154                                 initialize_builtin_statbars(player)
 155                         end
 156                 end
 157                 return true
 158         end
 159
 160         return false
 161 end
 162
 163 core.register_on_joinplayer(initialize_builtin_statbars)
 164 core.register_on_leaveplayer(cleanup_builtin_statbars)
 165 core.register_playerevent(player_event_handler)