epervier-old/birb/modules/timers/init.lua

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-- timers :: a basic implementation of a timer system.
--[[
Copyright © 2019 Kazhnuz
Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
the Software, and to permit persons to whom the Software is furnished to do so,
subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
]]
local cwd = (...):gsub('%.init$', '') .. "."
local TimersManager = Object:extend()
local Timer = require(cwd .. "libs.timer")
local Tween = require(cwd .. "libs.tween")
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function TimersManager:new(subject)
self.subject = subject
self.time = 0
self.timers = {}
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self.switches = {}
self.tweens = {}
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end
-- UPDATE
-- Update every timers
function TimersManager:update(dt)
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self.time = self.time + dt
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for k, timer in pairs(self.timers) do
timer:update(dt)
end
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self:updateSwitches(dt)
self:updateTweens(dt)
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end
-- TIMER FUNCTIONS
-- Handle the timers
function TimersManager:newTimer(duration, name)
self.timers[name] = Timer(self, duration, name)
end
function TimersManager:timerResponse(timername)
if self.subject.timerResponse == nil then
core.debug:logWarn("TimersManager", "the subject have no timerResponse function")
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return 0
end
self.subject:timerResponse(timername)
end
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-- SWITCH FUNCTIONS
-- Handle switches
function TimersManager:newSwitch(start, bools)
local newSwitch = {}
-- we add the data into a switch wrapper
newSwitch.bools = bools
newSwitch.start = self.time + start -- /!\ START IS RELATIVE TO CURRENT TIME
newSwitch.clear = newSwitch.start + 1
table.insert(self.switches, newSwitch)
end
function TimersManager:updateSwitches(dt)
for i, switch in ipairs(self.switches) do
if (self.time > switch.start) then
-- We test each boolean in the switch
for i, bool in ipairs(switch.bools) do
-- if it's nil, we set it to true
if self.subject[bool] == nil then
self.subject[bool] = true
else
-- if it's not nil, we reverse the boolean
self.subject[bool] = (self.subject[bool] == false)
end
end
table.remove(self.switches, i)
end
end
end
-- TWEENING FUNCTIONS
-- Handle tween support via tween.lua
function TimersManager:newTween(start, duration, target, easing)
local newTween = {}
-- we add the data into a tween wrapper
newTween.tween = Tween.new(duration, self.subject, target, easing)
newTween.start = self.time + start -- /!\ START IS RELATIVE TO CURRENT TIME
newTween.clear = newTween.start + duration
table.insert(self.tweens, newTween)
end
function TimersManager:updateTweens(dt)
for i, tweenWrapper in ipairs(self.tweens) do
if (self.time > tweenWrapper.start) then
tweenWrapper.tween:update(dt)
end
end
self:clearEndedTweens()
end
function TimersManager:clearEndedTweens()
for i, tweenWrapper in ipairs(self.tweens) do
if (self.time > tweenWrapper.clear) then
table.remove(self.tweens, i)
end
end
end
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return TimersManager