add rust/wasm impl

1 files changed, 50 insertions, 0 deletions

diff --git a/src/point.rs b/src/point.rs
new file mode 100644
index 0000000..76f9ced
--- /dev/null
+++ b/src/point.rs
@@ -0,0 +1,50 @@
+use crate::state::{MAX_SPEED, TAU};
+
+const POINT_RADIUS: f64 = 0.01;
+
+fn rand_color() -> String {
+    format!("rgb({} {} {})", fastrand::u8(0..255), fastrand::u8(0..255), fastrand::u8(0..255))
+}
+
+#[derive(Clone, Debug)]
+pub struct Point {
+    pub x: f64,
+    pub y: f64,
+    pub radius: f64,
+    pub heading: f64,
+    pub speed: f64,
+    pub color: String,
+}
+
+impl Point {
+    pub fn new(x: f64, y: f64) -> Self {
+        Self {
+            x,
+            y,
+            radius: POINT_RADIUS,
+            heading: fastrand::f64() * TAU,
+            speed: fastrand::f64() * MAX_SPEED,
+            color: rand_color(),
+        }
+    }
+
+    pub fn equal_pos(&self, other: &Self) -> bool {
+        self.x == other.x && self.y == other.y
+    }
+
+    pub fn dot(&self, other: &Self) -> f64 {
+        self.x * other.x + self.y * other.y
+    }
+
+    pub fn mag(&self) -> f64 {
+        (self.x.powi(2) + self.y.powi(2)).sqrt()
+    }
+
+    pub fn speed_x(&self) -> f64 {
+        self.speed * self.heading.cos()
+    }
+
+    pub fn speed_y(&self) -> f64 {
+        self.speed * self.heading.sin()
+    }
+}