gauges/init.lua

59 lines
1.6 KiB
Lua

-- gauges: Adds health/breath bars above players
--
-- Copyright © 2014-2020 4aiman, Hugo Locurcio and contributors - MIT License
-- See `LICENSE.md` included in the source distribution for details.
if minetest.settings:get_bool("health_bars") == false or
not minetest.settings:get_bool("enable_damage")
then return end
-- Localize the vector distance function for better performance, as it's called
-- on every step
local vector_distance = vector.distance
minetest.register_entity("gauges:hp_bar", {
visual = "sprite",
visual_size = {x=1, y=1/16, z=1},
-- The texture is changed later in the code
textures = {"blank.png"},
collisionbox = {0},
physical = false,
on_step = function(self)
local player = self.wielder
if not player or
not minetest.is_player(player) or
vector_distance(player:get_pos(), self.object:get_pos()) > 3
then
self.object:remove()
return
end
local hp = player:get_hp() <= 20 and player:get_hp() or 20
local breath = player:get_breath() <= 10 and player:get_breath() or 11
if self.hp ~= hp or self.breath ~= breath then
self.object:set_properties({
textures = {
"health_"..tostring(hp)..".png^"..
"breath_"..tostring(breath)..".png"
}
})
self.hp = hp
self.breath = breath
end
end
})
local function add_gauge(player)
local entity = minetest.add_entity(player:get_pos(), "gauges:hp_bar")
entity:set_attach(player, "", {x=0, y=19, z=0}, {x=0, y=0, z=0})
entity:get_luaentity().wielder = player
end
minetest.register_on_joinplayer(function(player)
minetest.after(1, add_gauge, player)
end)