improved keyboard and mouse controls

1 files changed, 6 insertions, 0 deletions

diff --git a/src/math/vector.h b/src/math/vector.h
index d755c89..fcfc5bd 100644
--- a/src/math/vector.h
+++ b/src/math/vector.h
@@ -33,6 +33,12 @@ struct Vector2 {
         return *this + (-other);
     }
 
+    constexpr Vector2 operator+=(const Vector2& other) & {
+        x += other.x;
+        y += other.y;
+        return *this;
+    }
+
     constexpr float det(const Vector2& other) const & {
         return this->x * other.y - other.x * this->y;
     }