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Added a jumping trigger and state
[kaka/rust-sdl-test.git]
/
src
/
geometry.rs
diff --git
a/src/geometry.rs
b/src/geometry.rs
index
2d5a70c
..
7ddc3ec
100644
(file)
--- a/
src/geometry.rs
+++ b/
src/geometry.rs
@@
-38,6
+38,10
@@
impl Point<f64> {
y: self.y as i32,
}
}
+
+ pub fn cross_product(&self, p: Self) -> f64 {
+ return self.x * p.y - self.y * p.x;
+ }
}
macro_rules! impl_point_op {