pub struct Rect {
    pub x1 : i32,
    pub x2 : i32,
    pub y1 : i32,
    pub y2 : i32
}

impl Rect {
    pub fn new(x:i32, y: i32, w:i32, h:i32) -> Rect {
        Rect{x1:x, y1:y, x2:x+w, y2:y+h}
    }

    // Returns true if this overlaps with other
    pub fn intersect(&self, other:&Rect) -> bool {
        self.x1 <= other.x2 && self.x2 >= other.x1 && self.y1 <= other.y2 && self.y2 >= other.y1
    }

    pub fn center(&self) -> (i32, i32) {
        ((self.x1 + self.x2)/2, (self.y1 + self.y2)/2)
    }
}