feat(engine): add simple collision

1 files changed, 21 insertions, 0 deletions

diff --git a/engine/src/data_types/vector.rs b/engine/src/data_types/vector.rs
index 17953f4..6746b76 100644
--- a/engine/src/data_types/vector.rs
+++ b/engine/src/data_types/vector.rs
@@ -85,6 +85,11 @@ pub struct Vec3<Value>
 
 impl Vec3<f32>
 {
+    pub const BACK: Self = Self { x: 0.0, y: 1.0, z: -1.0 };
+    pub const DOWN: Self = Self { x: 0.0, y: -1.0, z: 0.0 };
+    pub const FRONT: Self = Self { x: 0.0, y: 1.0, z: 1.0 };
+    pub const LEFT: Self = Self { x: -1.0, y: 0.0, z: 0.0 };
+    pub const RIGHT: Self = Self { x: 1.0, y: 0.0, z: 0.0 };
     pub const UP: Self = Self { x: 0.0, y: 1.0, z: 0.0 };
 
     /// Returns the length of the vector.
@@ -209,6 +214,22 @@ where
     }
 }
 
+impl<Value> Mul for Vec3<Value>
+where
+    Value: Mul<Value, Output = Value>,
+{
+    type Output = Self;
+
+    fn mul(self, rhs: Self) -> Self::Output
+    {
+        Self::Output {
+            x: self.x * rhs.x,
+            y: self.y * rhs.y,
+            z: self.z * rhs.z,
+        }
+    }
+}
+
 impl<Value> Neg for Vec3<Value>
 where
     Value: Neg<Output = Value>,