package main

import "core:math"
import "core:math/linalg"
import "core:slice"


Timer :: struct {
	duration: f32,
	time: f32,
	active: bool,
	finished: proc(data: rawptr),
	data: rawptr
}


TIMER_SIZE :: 128
timers : [dynamic]^Timer

timers_clean :: proc() {
	for timer, i in timers {
		free(timer)
	}
}

timer_start :: proc(
		time: f32,
		data: rawptr = nil,
		callback: proc(data: rawptr) = nil
		) -> ^Timer {

	timer := new(Timer) 
	timer.duration = time
	timer.active = true
	timer.data = data
	timer.finished = callback

	append(&timers, timer)
	return timer
}

timer_cancel :: proc(t: ^Timer) {
	t.active = false
}

timers_process :: proc(delta: f32) {
	#reverse for timer, i in timers {
		if !timer.active {
			free(timer)
			unordered_remove(&timers, i)
			continue
		}

		timer.time += delta

		if timer.time >= timer.duration {
			timer.active = false
			if timer.finished != nil {
				timer.finished(timer.data)
			}
		}
	}
}