//Coal cooldown period
if (coalCooldown) {
    if (++coolDownDamageTimer % 2 == 0)
        coalTimer--;
    if (coalTimer <= 0) {
        coalCooldown = false;
        coalTimer = 0;
        coolDownDamageTimer = 0;
    }
}

//Deal coal damage
if (!global.debugInvincibility) {
    if (coalTimer % coalTimerMultiplier <= 3 && coalTimer >= (coalTimerMultiplier * coalTimerDamageThreshold)) {
        drawHitspark = ((coalTimer % coalTimerMultiplier < 2) && (coalTimer % coalTimerMultiplier > 0));
        if ((onCoals && coalTimer % coalTimerMultiplier == 0) || (coalCooldown && coolDownDamageTimer % coalTimerMultiplier == 0))
            global._health--;
    }
}