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minetest_hudbars
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Code Issues Releases Wiki Activity

Rename main table from “hud” to “hb”

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Wuzzy 2015-02-09 23:41:52 +01:00
parent b36645816f
commit 041e76692b
2 changed files with 56 additions and 56 deletions
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38
API.md
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@ -12,10 +12,10 @@ This API allows you to add, change, hide and unhide custom HUD bars for this mod
To give you a *very* brief overview over this API, here is the basic workflow on how to add your own custom HUD bar: To give you a *very* brief overview over this API, here is the basic workflow on how to add your own custom HUD bar:
* Create images for your HUD bar * Create images for your HUD bar
* Call `hud.register_hudbar` to make the definition of the HUD bar known to this mod * Call `hb.register_hudbar` to make the definition of the HUD bar known to this mod
* Call `hud.init_hudbar` for each player for which you want to use previously defined HUD bar * Call `hb.init_hudbar` for each player for which you want to use previously defined HUD bar
* Use `hud.change_hudbar` whenever you need to change the values of a HUD bar of a certain player * Use `hb.change_hudbar` whenever you need to change the values of a HUD bar of a certain player
* If you need it: Use `hud.hide_hudbar` and `hud.unhide_hudbar` to hide or unhide HUD bars of a certain player * If you need it: Use `hb.hide_hudbar` and `hb.unhide_hudbar` to hide or unhide HUD bars of a certain player
## The basic rules ## The basic rules
In order to use this API, you should be aware of a few basic rules in order to understand it: In order to use this API, you should be aware of a few basic rules in order to understand it:
@ -35,7 +35,7 @@ To make a new HUD bar known to this mod, you need …
* … an image of size 2×16 for the bar * … an image of size 2×16 for the bar
* … an icon of size 16×16 (optional) * … an icon of size 16×16 (optional)
* … to register it with `hud.register_hudbar` * … to register it with `hb.register_hudbar`
### Bar image ### Bar image
The image for the bar will be repeated horizontally to denote the “value” of the HUD bar. The image for the bar will be repeated horizontally to denote the “value” of the HUD bar.
@ -49,7 +49,7 @@ a vertical gradient.
### Icon ### Icon
A 16×16 image shown left of the HUD bar. This is optional. A 16×16 image shown left of the HUD bar. This is optional.
### `hud.register_hudbar(identifier, text_color, label, textures, default_start_value, default_start_max, start_hide, format_string)` ### `hb.register_hudbar(identifier, text_color, label, textures, default_start_value, default_start_max, start_hide, format_string)`
This function adds a new custom HUD This function adds a new custom HUD
Note this does not yet display the HUD bar. Note this does not yet display the HUD bar.
@ -64,7 +64,7 @@ There is currently no reliable way to force a certain order at which the custom
* `icon`: The file name of the icon, as string. This field can be `nil`, in which case no icon will be used. * `icon`: The file name of the icon, as string. This field can be `nil`, in which case no icon will be used.
* `default_start_value`: If this HUD bar is added to a player, and no initial value is specified, this value will be used as initial current value * `default_start_value`: If this HUD bar is added to a player, and no initial value is specified, this value will be used as initial current value
* `default_max_value`: If this HUD bar is added to a player, and no initial maximum value is specified, this value will be used as initial maximum value * `default_max_value`: If this HUD bar is added to a player, and no initial maximum value is specified, this value will be used as initial maximum value
* `start_hide`: The HUD bar will be initially start hidden when added to a player. Use `hud.unhide_hudbar` to unhide it. * `start_hide`: The HUD bar will be initially start hidden when added to a player. Use `hb.unhide_hudbar` to unhide it.
* `format_string`: This is optional; You can specify an alternative format string display the final text on the HUD bar. The default format string is “`%s: %d/%d`” (in this order: Label, current value, maximum value). See also the Lua documentation of `string.format`. * `format_string`: This is optional; You can specify an alternative format string display the final text on the HUD bar. The default format string is “`%s: %d/%d`” (in this order: Label, current value, maximum value). See also the Lua documentation of `string.format`.
#### Return value #### Return value
@ -77,18 +77,18 @@ explicitly initialized on a per-player basis.
You probably want to do this in the `minetest.register_on_joinplayer`. You probably want to do this in the `minetest.register_on_joinplayer`.
### `hud.init_hudbar(player, identifier, start_value, start_max)` ### `hb.init_hudbar(player, identifier, start_value, start_max)`
This function initialzes and activates a previously registered HUD bar and assigns it to a This function initialzes and activates a previously registered HUD bar and assigns it to a
certain client/player. This has only to be done once per player and after that, you can change certain client/player. This has only to be done once per player and after that, you can change
the values using `hud.change_hudbar`. the values using `hb.change_hudbar`.
However, if `start_hide` was set to `true` for the HUD bar (in `hud.register_hudbar`), the HUD bar However, if `start_hide` was set to `true` for the HUD bar (in `hb.register_hudbar`), the HUD bar
will initially be hidden, but the HUD elements are still sent to the client. Otherwise, will initially be hidden, but the HUD elements are still sent to the client. Otherwise,
the HUD bar will be initially be shown to the player. the HUD bar will be initially be shown to the player.
#### Parameters #### Parameters
* `player`: `ObjectRef` of the player to which the new HUD bar should be displayed to. * `player`: `ObjectRef` of the player to which the new HUD bar should be displayed to.
* `identifier`: The identifier of the HUD bar type, as specified in `hud.register_hudbar`. * `identifier`: The identifier of the HUD bar type, as specified in `hb.register_hudbar`.
* `start_value`: The initial current value of the HUD bar. This is optional, `default_start_value` of the registration function will be used, if this is `nil`. * `start_value`: The initial current value of the HUD bar. This is optional, `default_start_value` of the registration function will be used, if this is `nil`.
* `start_max`: The initial maximum value of the HUD bar. This is optional, `default_start_max` of the registration function will be used, if this is `nil` * `start_max`: The initial maximum value of the HUD bar. This is optional, `default_start_max` of the registration function will be used, if this is `nil`
@ -99,16 +99,16 @@ Always `nil`.
## Modifying a HUD bar ## Modifying a HUD bar
After a HUD bar has been added, you can change the current and maximum value on a per-player basis. After a HUD bar has been added, you can change the current and maximum value on a per-player basis.
You use the function `hud.change_hudbar` for this. You use the function `hb.change_hudbar` for this.
### `hud.change_hudbar(player, identifier, new_value, new_max_value)` ### `hb.change_hudbar(player, identifier, new_value, new_max_value)`
Changes the values of an initialized HUD bar for a certain player. `new_value` and `new_max_value` Changes the values of an initialized HUD bar for a certain player. `new_value` and `new_max_value`
can be `nil`; if one of them is `nil`, that means the value is unchanged. If both values can be `nil`; if one of them is `nil`, that means the value is unchanged. If both values
are `nil`, this function is a no-op. are `nil`, this function is a no-op.
#### Parameters #### Parameters
* `player`: `ObjectRef` of the player to which the HUD bar belongs to * `player`: `ObjectRef` of the player to which the HUD bar belongs to
* `identifier`: The identifier of the HUD bar type to change, as specified in `hud.register_hudbar`. * `identifier`: The identifier of the HUD bar type to change, as specified in `hb.register_hudbar`.
* `new_value`: The new current value of the HUD bar * `new_value`: The new current value of the HUD bar
* `new_max_value`: The new maximum value of the HUD bar * `new_max_value`: The new maximum value of the HUD bar
@ -118,29 +118,29 @@ Always `nil`.
## Hiding and unhiding a HUD bar ## Hiding and unhiding a HUD bar
You can also hide custom HUD bars, meaning they will not be displayed for a certain player. You can still You can also hide custom HUD bars, meaning they will not be displayed for a certain player. You can still
use `hud.change_hudbar` on a hidden HUD bar, the new values will be correctly displayed after the HUD bar use `hb.change_hudbar` on a hidden HUD bar, the new values will be correctly displayed after the HUD bar
has been unhidden. has been unhidden.
Note that the hidden state of a HUD bar will *not* be saved by this mod on server shutdown, so you may need Note that the hidden state of a HUD bar will *not* be saved by this mod on server shutdown, so you may need
to write your own routines for this. to write your own routines for this.
### `hud.hide_hudbar(player, identifier)` ### `hb.hide_hudbar(player, identifier)`
Hides the specified HUD bar from the screen of the specified player. Hides the specified HUD bar from the screen of the specified player.
#### Parameters #### Parameters
* `player`: `ObjectRef` of the player to which the HUD bar belongs to * `player`: `ObjectRef` of the player to which the HUD bar belongs to
* `identifier`: The identifier of the HUD bar type to hide, as specified in `hud.register_hudbar`. * `identifier`: The identifier of the HUD bar type to hide, as specified in `hb.register_hudbar`.
#### Return value #### Return value
Always `nil`. Always `nil`.
### `hud.hide_hudbar(player, identifier)` ### `hb.hide_hudbar(player, identifier)`
Makes a previously hidden HUD bar visible again to a player. Makes a previously hidden HUD bar visible again to a player.
#### Parameters #### Parameters
* `player`: `ObjectRef` of the player to which the HUD bar belongs to * `player`: `ObjectRef` of the player to which the HUD bar belongs to
* `identifier`: The identifier of the HUD bar type to unhide, as specified in `hud.register_hudbar`. * `identifier`: The identifier of the HUD bar type to unhide, as specified in `hb.register_hudbar`.
#### Return value #### Return value
Always `nil`. Always `nil`.

74
init.lua
View File

@ -1,13 +1,13 @@
hud = {} hb = {}
-- HUD statbar values -- HUD statbar values
hud.health = {} hb.health = {}
hud.air = {} hb.air = {}
hud.hudtables = {} hb.hudtables = {}
-- number of registered HUD bars -- number of registered HUD bars
hud.hudbars_count = 0 hb.hudbars_count = 0
-- HUD item ids -- HUD item ids
local health_hud = {} local health_hud = {}
@ -53,7 +53,7 @@ end
HUD_TICK = 0.1 HUD_TICK = 0.1
function hud.value_to_barlength(value, max) function hb.value_to_barlength(value, max)
if max == 0 then if max == 0 then
return 0 return 0
else else
@ -61,24 +61,24 @@ function hud.value_to_barlength(value, max)
end end
end end
function hud.get_hudtable(identifier) function hb.get_hudtable(identifier)
return hud.hudtables[identifier] return hb.hudtables[identifier]
end end
function hud.register_hudbar(identifier, text_color, label, textures, default_start_value, default_start_max, start_hide, format_string) function hb.register_hudbar(identifier, text_color, label, textures, default_start_value, default_start_max, start_hide, format_string)
local hudtable = {} local hudtable = {}
local pos, offset local pos, offset
if hud.hudbars_count % 2 == 0 then if hb.hudbars_count % 2 == 0 then
pos = HUD_CUSTOM_POS_LEFT pos = HUD_CUSTOM_POS_LEFT
offset = { offset = {
x = HUD_CUSTOM_START_OFFSET_LEFT.x, x = HUD_CUSTOM_START_OFFSET_LEFT.x,
y = HUD_CUSTOM_START_OFFSET_LEFT.y - HUD_CUSTOM_VMARGIN * math.floor(hud.hudbars_count/2) y = HUD_CUSTOM_START_OFFSET_LEFT.y - HUD_CUSTOM_VMARGIN * math.floor(hb.hudbars_count/2)
} }
else else
pos = HUD_CUSTOM_POS_RIGHT pos = HUD_CUSTOM_POS_RIGHT
offset = { offset = {
x = HUD_CUSTOM_START_OFFSET_RIGHT.x, x = HUD_CUSTOM_START_OFFSET_RIGHT.x,
y = HUD_CUSTOM_START_OFFSET_RIGHT.y - HUD_CUSTOM_VMARGIN * math.floor((hud.hudbars_count-1)/2) y = HUD_CUSTOM_START_OFFSET_RIGHT.y - HUD_CUSTOM_VMARGIN * math.floor((hb.hudbars_count-1)/2)
} }
end end
if format_string == nil then if format_string == nil then
@ -119,7 +119,7 @@ function hud.register_hudbar(identifier, text_color, label, textures, default_st
hud_elem_type = "statbar", hud_elem_type = "statbar",
position = pos, position = pos,
text = textures.bar, text = textures.bar,
number = hud.value_to_barlength(start_value, start_max), number = hb.value_to_barlength(start_value, start_max),
alignment = {x=-1,y=-1}, alignment = {x=-1,y=-1},
offset = offset, offset = offset,
}) })
@ -136,8 +136,8 @@ function hud.register_hudbar(identifier, text_color, label, textures, default_st
state.value = start_value state.value = start_value
state.max = start_max state.max = start_max
hud.hudtables[identifier].hudids[name] = ids hb.hudtables[identifier].hudids[name] = ids
hud.hudtables[identifier].hudstate[name] = state hb.hudtables[identifier].hudstate[name] = state
end end
hudtable.identifier = identifier hudtable.identifier = identifier
@ -146,22 +146,22 @@ function hud.register_hudbar(identifier, text_color, label, textures, default_st
hudtable.hudids = {} hudtable.hudids = {}
hudtable.hudstate = {} hudtable.hudstate = {}
hud.hudbars_count= hud.hudbars_count + 1 hb.hudbars_count= hb.hudbars_count + 1
hud.hudtables[identifier] = hudtable hb.hudtables[identifier] = hudtable
end end
function hud.init_hudbar(player, identifier, start_value, start_max) function hb.init_hudbar(player, identifier, start_value, start_max)
hud.hudtables[identifier].add_all(player, start_value, start_max) hb.hudtables[identifier].add_all(player, start_value, start_max)
end end
function hud.change_hudbar(player, identifier, new_value, new_max_value) function hb.change_hudbar(player, identifier, new_value, new_max_value)
if new_value == nil and new_max_value == nil then if new_value == nil and new_max_value == nil then
return return
end end
local name = player:get_player_name() local name = player:get_player_name()
local hudtable = hud.get_hudtable(identifier) local hudtable = hb.get_hudtable(identifier)
if new_value ~= nil then if new_value ~= nil then
hudtable.hudstate[name].value = new_value hudtable.hudstate[name].value = new_value
@ -180,16 +180,16 @@ function hud.change_hudbar(player, identifier, new_value, new_max_value)
else else
player:hud_change(hudtable.hudids[name].bg, "scale", {x=1,y=1}) player:hud_change(hudtable.hudids[name].bg, "scale", {x=1,y=1})
end end
player:hud_change(hudtable.hudids[name].bar, "number", hud.value_to_barlength(new_value, new_max_value)) player:hud_change(hudtable.hudids[name].bar, "number", hb.value_to_barlength(new_value, new_max_value))
player:hud_change(hudtable.hudids[name].text, "text", player:hud_change(hudtable.hudids[name].text, "text",
tostring(string.format(hudtable.format_string, hudtable.label, new_value, new_max_value)) tostring(string.format(hudtable.format_string, hudtable.label, new_value, new_max_value))
) )
end end
end end
function hud.hide_hudbar(player, identifier) function hb.hide_hudbar(player, identifier)
local name = player:get_player_name() local name = player:get_player_name()
local hudtable = hud.get_hudtable(identifier) local hudtable = hb.get_hudtable(identifier)
if(hudtable.hudstate[name].hidden == false) then if(hudtable.hudstate[name].hidden == false) then
player:hud_change(hudtable.hudids[name].icon, "scale", {x=0,y=0}) player:hud_change(hudtable.hudids[name].icon, "scale", {x=0,y=0})
player:hud_change(hudtable.hudids[name].bg, "scale", {x=0,y=0}) player:hud_change(hudtable.hudids[name].bg, "scale", {x=0,y=0})
@ -199,9 +199,9 @@ function hud.hide_hudbar(player, identifier)
end end
end end
function hud.unhide_hudbar(player, identifier) function hb.unhide_hudbar(player, identifier)
local name = player:get_player_name() local name = player:get_player_name()
local hudtable = hud.get_hudtable(identifier) local hudtable = hb.get_hudtable(identifier)
if(hudtable.hudstate[name].hidden) then if(hudtable.hudstate[name].hidden) then
local name = player:get_player_name() local name = player:get_player_name()
local value = hudtable.hudstate[name].value local value = hudtable.hudstate[name].value
@ -210,7 +210,7 @@ function hud.unhide_hudbar(player, identifier)
if hudtable.hudstate[name].max ~= 0 then if hudtable.hudstate[name].max ~= 0 then
player:hud_change(hudtable.hudids[name].bg, "scale", {x=1,y=1}) player:hud_change(hudtable.hudids[name].bg, "scale", {x=1,y=1})
end end
player:hud_change(hudtable.hudids[name].bar, "number", hud.value_to_barlength(value, max)) player:hud_change(hudtable.hudids[name].bar, "number", hb.value_to_barlength(value, max))
player:hud_change(hudtable.hudids[name].text, "text", tostring(string.format(hudtable.format_string, hudtable.label, value, max))) player:hud_change(hudtable.hudids[name].text, "text", tostring(string.format(hudtable.format_string, hudtable.label, value, max)))
hudtable.hudstate[name].hidden = false hudtable.hudstate[name].hidden = false
end end
@ -254,7 +254,7 @@ local function custom_hud(player)
hud_elem_type = "statbar", hud_elem_type = "statbar",
position = HUD_HEALTH_POS, position = HUD_HEALTH_POS,
text = "hudbars_bar_health.png", text = "hudbars_bar_health.png",
number = hud.value_to_barlength(player:get_hp(), 20), number = hb.value_to_barlength(player:get_hp(), 20),
alignment = {x=-1,y=-1}, alignment = {x=-1,y=-1},
offset = HUD_HEALTH_OFFSET, offset = HUD_HEALTH_OFFSET,
}) })
@ -276,7 +276,7 @@ local function custom_hud(player)
airtext = "" airtext = ""
airscale = {x=0, y=0} airscale = {x=0, y=0}
else else
airnumber = hud.value_to_barlength(math.min(air, 10), 10) airnumber = hb.value_to_barlength(math.min(air, 10), 10)
airtext = tostring(string.format("Breath: %d/%d", math.min(air, 10), 10)) airtext = tostring(string.format("Breath: %d/%d", math.min(air, 10), 10))
airscale = {x=1, y=1} airscale = {x=1, y=1}
end end
@ -322,17 +322,17 @@ end
local function update_hud(player) local function update_hud(player)
local name = player:get_player_name() local name = player:get_player_name()
--air --air
local air = tonumber(hud.air[name]) local air = tonumber(hb.air[name])
if player:get_breath() ~= air then if player:get_breath() ~= air then
air = player:get_breath() air = player:get_breath()
hud.air[name] = air hb.air[name] = air
local airnumber, airtext, airscale local airnumber, airtext, airscale
if air == 11 then if air == 11 then
airnumber = 0 airnumber = 0
airtext = "" airtext = ""
airscale = {x=0, y=0} airscale = {x=0, y=0}
else else
airnumber = hud.value_to_barlength(math.min(air, 10), 10) airnumber = hb.value_to_barlength(math.min(air, 10), 10)
airtext = tostring(string.format("Breath: %d/%d", math.min(player:get_breath(), 10), 10)) airtext = tostring(string.format("Breath: %d/%d", math.min(player:get_breath(), 10), 10))
airscale = {x=1, y=1} airscale = {x=1, y=1}
end end
@ -342,11 +342,11 @@ local function update_hud(player)
player:hud_change(air_hud_bg[name], "scale", airscale) player:hud_change(air_hud_bg[name], "scale", airscale)
end end
--health --health
local hp = tonumber(hud.health[name]) local hp = tonumber(hb.health[name])
if player:get_hp() ~= hp then if player:get_hp() ~= hp then
hp = player:get_hp() hp = player:get_hp()
hud.health[name] = hp hb.health[name] = hp
player:hud_change(health_hud[name], "number", hud.value_to_barlength(hp, 20)) player:hud_change(health_hud[name], "number", hb.value_to_barlength(hp, 20))
player:hud_change(health_hud_text[name], "text", player:hud_change(health_hud_text[name], "text",
tostring(string.format("Health: %d/%d", hp, 20)) tostring(string.format("Health: %d/%d", hp, 20))
) )
@ -357,9 +357,9 @@ end
minetest.register_on_joinplayer(function(player) minetest.register_on_joinplayer(function(player)
local name = player:get_player_name() local name = player:get_player_name()
local inv = player:get_inventory() local inv = player:get_inventory()
hud.health[name] = player:get_hp() hb.health[name] = player:get_hp()
local air = player:get_breath() local air = player:get_breath()
hud.air[name] = air hb.air[name] = air
minetest.after(0.5, function() minetest.after(0.5, function()
hide_builtin(player) hide_builtin(player)
custom_hud(player) custom_hud(player)