90 lines
2.5 KiB
Lua
90 lines
2.5 KiB
Lua
-- Adds health bars above players.
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-- Code by 4aiman, textures by Calinou. Licensed under CC0.
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gauges = {}
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local hp_bar = {
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physical = false,
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collisionbox = {x = 0, y = 0, z = 0},
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visual = "sprite",
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textures = {"20.png"}, -- The texture is changed later in the code.
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visual_size = {x = 1.5, y = 0.09375, z = 1.5}, -- Y value is (1 / 16) * 1.5.
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wielder = nil,
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}
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function vector.sqdist(a, b)
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local dx = a.x - b.x
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local dy = a.y - b.y
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local dz = a.z - b.z
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return dx*dx + dy*dy + dz*dz
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end
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function hp_bar:on_step(dtime)
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local wielder = self.wielder and minetest.get_player_by_name(self.wielder)
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if wielder == nil then
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minetest.log("warning", "[gauges] Gauge removed as null wielder! " .. dump(self.wielder))
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self.object:remove()
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return
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end
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if vector.sqdist(wielder:get_pos(), self.object:get_pos()) > 3 then
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minetest.log("warning", "[gauges] Gauge removed as not attached! " .. dump(self.wielder))
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self.object:remove()
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return
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end
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local hp = math.floor(20 * wielder:get_hp() / wielder:get_properties().hp_max)
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local breath = math.floor(11 * wielder:get_breath() / wielder:get_properties().breath_max)
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self.object:set_properties({
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textures = {
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"health_" .. tostring(hp) .. ".png^breath_" .. tostring(breath) .. ".png",
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},
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})
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end
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minetest.register_entity("gauges:hp_bar", hp_bar)
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function gauges.add_HP_gauge(name)
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local player = minetest.get_player_by_name(name)
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if player then
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local pos = player:get_pos()
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local ent = minetest.add_entity(pos, "gauges:hp_bar")
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assert(ent)
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if ent ~= nil then
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ent:set_attach(player, "", {x = 0, y = 19, z = 0}, {x = 0, y = 0, z = 0})
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ent = ent:get_luaentity()
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ent.wielder = player:get_player_name()
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end
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end
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end
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-- If health_bars not defined or set to true
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if minetest.settings:get_bool("health_bars") ~= false and
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minetest.settings:get_bool("enable_damage") then
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minetest.register_on_joinplayer(function(player)
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minetest.after(2, gauges.add_HP_gauge, player:get_player_name())
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end)
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end
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function gauges.check_gauges()
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for _, player in pairs(minetest.get_connected_players()) do
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local pname = player:get_player_name()
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local found = false
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local objects = minetest.get_objects_inside_radius(player:get_pos(), 1)
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for _, object in pairs(objects) do
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local le = object:get_luaentity()
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if le and le.wielder == pname then
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found = true
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break
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end
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end
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if not found then
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minetest.log("warning", "[gauges] Gauge not found for player " .. pname)
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gauges.add_HP_gauge(pname)
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end
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end
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minetest.after(9.3, gauges.check_gauges)
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end
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minetest.after(2, gauges.check_gauges)
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