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82 lines
1.9 KiB
Lua
82 lines
1.9 KiB
Lua
--- Component to handle GUI timers
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-- @module druid.timer
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local const = require("druid.const")
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local formats = require("druid.helper.formats")
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local helper = require("druid.helper")
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local component = require("druid.component")
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local M = component.create("timer", { const.ON_UPDATE })
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function M.init(self, node, seconds_from, seconds_to, callback)
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self.node = helper.get_node(node)
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seconds_from = math.max(seconds_from, 0)
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seconds_to = math.max(seconds_to or 0, 0)
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callback = callback or const.EMPTY_FUNCTION
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self:set_to(seconds_from)
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self:set_interval(seconds_from, seconds_to)
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self.callback = callback
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if seconds_to - seconds_from == 0 then
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self:set_state(false)
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self.callback(self:get_context(), self)
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end
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return self
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end
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--- Set text to text field
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-- @function timer:set_to
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-- @tparam table self Component instance
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-- @tparam number set_to Value in seconds
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function M.set_to(self, set_to)
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self.last_value = set_to
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gui.set_text(self.node, formats.second_string_min(set_to))
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end
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--- Called when update
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-- @function timer:set_state
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-- @tparam table self Component instance
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-- @tparam boolean is_on Timer enable state
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function M.set_state(self, is_on)
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self.is_on = is_on
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end
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--- Set time interval
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-- @function timer:set_interval
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-- @tparam table self Component instance
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-- @tparam number from Start time in seconds
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-- @tparam number to Target time in seconds
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function M.set_interval(self, from, to)
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self.from = from
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self.value = from
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self.temp = 0
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self.target = to
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M.set_state(self, true)
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M.set_to(self, from)
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end
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function M.update(self, dt)
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if self.is_on then
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self.temp = self.temp + dt
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local dist = math.min(1, math.abs(self.value - self.target))
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if self.temp > dist then
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self.temp = self.temp - dist
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self.value = helper.step(self.value, self.target, 1)
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M.set_to(self, self.value)
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if self.value == self.target then
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self:set_state(false)
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self.callback(self:get_context(), self)
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end
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end
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end
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end
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return M |