Differences

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--- raycasthit2d [2021/05/05 07:05] – Added title, and added another example andrew900460
+++ raycasthit2d [2025/01/15 04:35] (current) – external edit 127.0.0.1
@@ Line 1: / Line 1: @@
 ====== RaycastHit2D ======
-==== Implicit Bool Casting Magic ====
+==== Casts Implicitly To a Bool ====
+RaycastHit2D implements the C# [[https://forum.unity.com/threads/c-beginner-tips-1-your-friend-the-implicit-bool.185761/|implicit bool]] operator. This allows it to be used in an if statement to check whether a hit is found.
-''RaycastHit2D'' can be used in an if statement to tell if the raycast hit anything, or if it hit nothing.
+<code csharp>
-This is because C# has the ability to do implied type conversions, and Unity has made it so RaycastHit2D can be converted to a bool. Pretty cool.
+public static implicit operator bool(RaycastHit2D hit) => (Object) hit.collider != (Object) null;
+</code>
-Example:
+++++ Example |
-<code>
+<code c#>
 RaycastHit2D hit = Physics2D.Raycast(someStartPoint, someDirection);
@@ Line 16: / Line 16: @@
 This is also valid:
-<code>
+<code c#>
 RaycastHit2D hit = Physics2D.Raycast(someStartPoint, someDirection);
 bool rayHitSomthing = hit;
 </code>
+++++