JetPack()
{
	self DisableOffHandWeapons();

	Fuel = 100;

	for (;;)
	{
		wait 0.05;

		if (self FragButtonPressed() && Fuel > 0)
		{
			PlayFxOnTag(level._effect["thundergun_smoke_cloud"], self, "j_ankle_le");
			PlayFxOnTag(level._effect["thundergun_smoke_cloud"], self, "j_ankle_ri");

			self PlaySound("elec_jib_zombie");
			Earthquake(0.15, 0.2, self GetTagOrigin("j_spine4"), 50);
			self SetVelocity(self GetVelocity() + (0, 0, 60));
			
			Fuel --;
			if (Fuel < 0)
				Fuel = 0;
		}

		if (!self FragButtonPressed() && Fuel < 100)
			Fuel ++;

		if (self MeleeButtonPressed())
			break;
	}

	self EnableOffHandWeapons();
}