use std::ops::{Add, Sub};

/// 二维向量
#[derive(Copy, Clone, Debug, Default)]
pub struct Vector2 {
    /// x坐标
    pub x: i32,
    /// y坐标
    pub y: i32,
}

impl Vector2 {
    pub fn new(x: i32, y: i32) -> Self {
        Vector2 { x: x, y: y }
    }
}

impl Add for Vector2 {
    type Output = Vector2;

    fn add(self, other: Vector2) -> Self::Output {
        Vector2 {
            x: self.x + other.x,
            y: self.y + other.y,
        }
    }
}

impl Sub for Vector2 {
    type Output = Vector2;

    fn sub(self, other: Vector2) -> Self::Output {
        Vector2 {
            x: self.x - other.x,
            y: self.y - other.y,
        }
    }
}