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Fix possible crash after player left
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17
API.md
17
API.md
@ -95,8 +95,7 @@ the HUD bar will be initially be shown to the player.
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* `start_hidden`: Whether the HUD bar is initially hidden. This is optional, `default_start_hidden` of the registration function will be used as default
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#### Return value
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Always `nil`.
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`true` on success, `false` otherwise.
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## Modifying a HUD bar
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@ -135,7 +134,7 @@ such network optimization for the “styling” parameters, so keep this in mind
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* `new_text_color`: A 3-octet number defining the new color of the text.
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#### Return value
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Always `nil`.
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`true` on success, `false` otherwise.
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## Hiding and unhiding a HUD bar
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@ -156,7 +155,7 @@ Hides the specified HUD bar from the screen of the specified player.
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* `identifier`: The identifier of the HUD bar type to hide, as specified in `hb.register_hudbar`.
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#### Return value
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Always `nil`.
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`true` on success, `false` otherwise.
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### `hb.unhide_hudbar(player, identifier)`
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@ -167,7 +166,7 @@ Makes a previously hidden HUD bar visible again to a player.
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* `identifier`: The identifier of the HUD bar type to unhide, as specified in `hb.register_hudbar`.
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#### Return value
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Always `nil`.
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`true` on success, `false` otherwise.
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## Reading HUD bar information
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@ -181,12 +180,14 @@ Returns the current state of the active player's HUD bar.
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* `identifier`: The identifier of the HUD bar type to hide, as specified in `hb.register_hudbar`.
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#### Return value
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A table which holds information on the current state of the HUD bar. Note the table is a deep
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copy of the internal HUD bar state, it is *not* a reference; the information hold by the table is
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only true for the moment you called this function. The fields of this table are:
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On success, returns a table which holds information on the current state of the HUD bar. Note
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the table is a deep copy of the internal HUD bar state, it is *not* a reference; the information
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hold by the table is only true for the moment you called this function. The fields of this table are:
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* `value`: Current value of HUD bar.
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* `max`: Current maximum value of HUD bar.
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* `hidden`: Boolean denoting whether the HUD bar is hidden.
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* `barlength`: The length of the HUD bar in pixels. This field is meaningless if the HUD bar is currently hidden.
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* `text`: The text shown on the HUD bar. This fiels is meaningless if the HUD bar is currently hidden.
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If the player does not exist, returns `nil` instead.
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23
init.lua
23
init.lua
@ -90,6 +90,10 @@ else
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hb.settings.sorting_reverse = { [0] = "health", [1] = "breath" }
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end
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local function player_exists(player)
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return player ~= nil and player:is_player()
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end
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-- Table which contains all players with active default HUD bars (only for internal use)
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hb.players = {}
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@ -285,13 +289,18 @@ function hb.register_hudbar(identifier, text_color, label, textures, default_sta
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end
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function hb.init_hudbar(player, identifier, start_value, start_max, start_hidden)
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if not player_exists(player) then return false end
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local hudtable = hb.get_hudtable(identifier)
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hb.hudtables[identifier].add_all(player, hudtable, start_value, start_max, start_hidden)
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return true
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end
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function hb.change_hudbar(player, identifier, new_value, new_max_value, new_icon, new_bgicon, new_bar, new_label, new_text_color)
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if new_value == nil and new_max_value == nil and new_icon == nil and new_bgicon == nil and new_bar == nil and new_label == nil and new_text_color == nil then
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return
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return true
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end
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if not player_exists(player) then
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return false
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end
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local name = player:get_player_name()
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@ -379,11 +388,14 @@ function hb.change_hudbar(player, identifier, new_value, new_max_value, new_icon
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end
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end
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end
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return true
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end
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function hb.hide_hudbar(player, identifier)
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if not player_exists(player) then return false end
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local name = player:get_player_name()
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local hudtable = hb.get_hudtable(identifier)
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if hudtable == nil then return false end
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if(hudtable.hudstate[name].hidden == false) then
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if hb.settings.bar_type == "progress_bar" then
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if hudtable.hudids[name].icon ~= nil then
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@ -397,11 +409,14 @@ function hb.hide_hudbar(player, identifier)
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player:hud_change(hudtable.hudids[name].bar, "number", 0)
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hudtable.hudstate[name].hidden = true
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end
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return true
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end
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function hb.unhide_hudbar(player, identifier)
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if not player_exists(player) then return false end
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local name = player:get_player_name()
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local hudtable = hb.get_hudtable(identifier)
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if hudtable == nil then return false end
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if(hudtable.hudstate[name].hidden) then
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local value = hudtable.hudstate[name].value
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local max = hudtable.hudstate[name].max
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@ -419,9 +434,11 @@ function hb.unhide_hudbar(player, identifier)
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player:hud_change(hudtable.hudids[name].bar, "number", hb.value_to_barlength(value, max))
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hudtable.hudstate[name].hidden = false
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end
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return true
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end
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function hb.get_hudbar_state(player, identifier)
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if not player_exists(player) then return nil end
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local ref = hb.get_hudtable(identifier).hudstate[player:get_player_name()]
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-- Do not forget to update this chunk of code in case the state changes
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local copy = {
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@ -467,6 +484,7 @@ end
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-- update built-in HUD bars
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local function update_hud(player)
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if not player_exists() then return end
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if minetest.setting_getbool("enable_damage") then
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if hb.settings.forceload_default_hudbars then
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hb.unhide_hudbar(player, "health")
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@ -510,7 +528,8 @@ minetest.register_globalstep(function(dtime)
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if minetest.setting_getbool("enable_damage") or hb.settings.forceload_default_hudbars then
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for _, player in pairs(hb.players) do
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-- update all hud elements
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update_hud(player)
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minetest.after(1,function(player) update_hud(player) end, player)
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-- update_hud(player)
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end
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end
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end
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