forked from minetest-mods/gauges
84 lines
2.1 KiB
Lua
84 lines
2.1 KiB
Lua
-- gauges: Adds health/breath bars above players
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--
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-- Copyright © 2014-2020 4aiman, Hugo Locurcio and contributors - MIT License
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-- See `LICENSE.md` included in the source distribution for details.
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local enabled = minetest.settings:get_bool("health_bars") ~= false
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if enabled then
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enabled = minetest.settings:get_bool("enable_damage")
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end
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-- Localize this functions for better performance,
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-- as it's called on every step
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local vector_distance = vector.distance
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local min = math.min
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local max_breath = minetest.PLAYER_MAX_BREATH_DEFAULT or 11
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local mt_5 = minetest.features.object_independent_selectionbox
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local function add_gauge(player)
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if player and player:is_player() then
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local entity = minetest.add_entity(player:get_pos(), "gauges:hp_bar")
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-- Check Minetest version and set required entity heigh
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-- (The entity height offset was changed in Minetest 5.0.0)
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local height = mt_5 and 19 or 9
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entity:set_attach(player, "", {x=0, y=height, z=0}, {x=0, y=0, z=0})
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entity:get_luaentity().wielder = player
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end
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end
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minetest.register_entity("gauges:hp_bar", {
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visual = "sprite",
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visual_size = {x=1, y=1/16, z=1},
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textures = {"blank.png"},
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collisionbox = {0},
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physical = false,
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on_step = function(self)
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local player = self.wielder
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local gauge = self.object
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if not enabled or
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not player or not player:is_player() then
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gauge:remove()
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return
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elseif vector_distance(player:get_pos(), gauge:get_pos()) > 3 then
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gauge:remove()
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add_gauge(player)
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return
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end
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local hp = min(player:get_hp(), 20)
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local breath = min(player:get_breath(), max_breath)
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if self.hp ~= hp or self.breath ~= breath then
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local health_t = "health_"..hp..".png"
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local breath_t = "breath_"..breath..".png"
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if hp == 0 then
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health_t = "blank.png"
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end
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if breath == max_breath then
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breath_t = "blank.png"
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end
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gauge:set_properties({
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textures = {health_t.."^"..breath_t}
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})
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self.hp = hp
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self.breath = breath
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end
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end
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})
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if enabled then
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minetest.register_on_joinplayer(function(player)
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minetest.after(1, add_gauge, player)
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end)
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end
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minetest.log("action", "[gauges] loaded.")
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