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-rw-r--r--src/vector2.rs55
1 files changed, 55 insertions, 0 deletions
diff --git a/src/vector2.rs b/src/vector2.rs
new file mode 100644
index 0000000..e991a2a
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+++ b/src/vector2.rs
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+use sdl2::rect::Point;
+
+#[derive(PartialEq, Clone, Copy)]
+pub struct Vector2 {
+ pub y: f32,
+ pub x: f32,
+}
+
+impl Vector2 {
+ pub fn new(x: f32, y: f32) -> Vector2 {
+ Vector2 { x, y }
+ }
+
+ pub fn from_point(point: Point) -> Vector2 {
+ Vector2::new(point.x as f32, point.y as f32)
+ }
+
+ pub fn norm(&self) -> f32 {
+ (self.x * self.x + self.y * self.y).sqrt()
+ }
+
+ pub fn normalize(&mut self) {
+ *self = *self / self.norm();
+ }
+}
+
+use std::ops::{Add, Mul, MulAssign, Div};
+
+impl Add for Vector2 {
+ type Output = Self;
+ fn add(self, other: Self) -> Self::Output {
+ Vector2::new(self.x + other.x, self.y + other.y)
+ }
+}
+
+impl Mul<f32> for Vector2 {
+ type Output = Vector2;
+ fn mul(self, scalar: f32) -> Self::Output {
+ Vector2::new(self.x * scalar, self.y * scalar)
+ }
+}
+
+impl MulAssign<f32> for Vector2 {
+ fn mul_assign(&mut self, scalar: f32) {
+ self.x *= scalar;
+ self.y *= scalar;
+ }
+}
+
+impl Div<f32> for Vector2 {
+ type Output = Vector2;
+ fn div(self, scalar: f32) -> Self::Output {
+ Vector2::new(self.x / scalar, self.y / scalar)
+ }
+}