init_instance.gravity

#unittest {
	name: "Test instance init.";
	error: NONE;
	result: 333;
};

// no init
class c1 {
	var p1;
	func f1() {p1 = 3; return p1;}
}

// implicit init
class c2 {
	var p1 = 10;
	var p2 = 20;
	func f1() {return p1+p2;}
}

// explicit init
class c3 {
	var p1 = 33;
	var p2 = 44;
	func f1() {return p1+p2;}
	func init(n1,n2) {
		p1 = n1;
		p2 = n2;
	}
}

func main() {
	var x1 = c1();
	var x2 = c2();
	var x3 = c3(100,200);
	return x1.f1() + x2.f1() + x3.f1();
}