capturetheflag/mods/pvp/gauges/init.lua

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