#Unity 3d raycast code

The player has to have the Player tag and must have either a Rigidbody or Character Controller attached.

So the zone should be a empty with a trigger attached. Private void OnTriggerExit(Collider other) Make everything disappear when the player exits Private void OnTriggerEnter(Collider other)ДЇoreach( Transform Child in ansform) Make everything visible when the player enters So for example we want everything parented to the zone to be visible when the player enters: using System.Collections

#Unity 3d raycast code

Triggers are for zones, however the code should be attach to the zone.

If you are willing to share more details I can try and help you more. I think the problem you have can be solved in a more effective way. Or you can use LayerMask mask = LayerMask.GetMask ('Floor') Д¬olliding with all layers, by inverting no layers: LayerMask AllLayers = ~0Д¬olliding with all layers except one: LayerMask FloorLayer = 1 << 9 followed by inverting it: FloorLayer = ~FloorLayer If you don't know how bits work, here is a tutorial.Д¬olliding with just one layer: LayerMask FloorLayer = 1 << 9 Now only layer 9 is selected. However if you want to manipulate layers in code to include them or exclude them then you use a layer bit mask. There always needs to be at least one layer that doesn't raycast, it's for optimization and practical purposes. If you ever need to raycast against triggers, it actually means that you need layer based collision detection, so that you can have a layer that doesn't interact with your other objects.ДЄlso while im here how do i not have any layers excluded There is a special condition where character controllers can always raycast against triggers. That is why raycasts will miss the trigger unless it has a Rigidbody component. In theory you should never search for trigger collisions, unless it is moving. The trigger is like a raycast it self, in that it searches for collisions and doesn't cause them. Unless you have a deep understanding how how physics work, you should not override the queryTriggerInteraction. Details can be found here, if you scroll down you will find what can collide with what. What you need to know is that by default Unity has a check list of what is allowed to collide with what. QueryTriggerInteraction not true or false? This is how you get the hit location ant other special data. Out variables is a special kind of C# variable, info here, that allows you to extract information from a function. The fast version is Physics.Raycast( Vector3 origin, Vector3 direction, out RaycastHit HitInfo) This only requires two vectors and a out variable.ДЄ ray cast will always return true if it hits, and false if it fails. Ray casts are extremely simple and easy to use: Physics.Raycast() fill in the parameters you want and that is it. My apology, this is going to be a long post. Reddit Logo created by /u/big-ish from /r/redditlogos! Long series.Д¬SS created by Sean O'Dowd, Maintained and updated by Louis Hong /u/loolo78 Favors theory over implementation but leaves source in video description. Normally part of a series.ДЄlmost entirely shader tutorials. Lots of graphics/shader programming tutorials in addition to 'normal' C# tutorials. Using Version Control with Unitењ“d (Mercurial) Related SubredditsД¬oncise tutorials. Unity Game Engine Syllabus (Getting Started Guide)ДҐ0 Tips and Best Practices for Unity (2016 Edition) Lots of professionals hang out there.ДЇreeNode IRC Chatroom Helpful Unitењ“D Links Use the chat room if you're new to Unity or have a quick question. Please refer to our Wiki before posting! And be sure to flair your post appropriately. Remember to check out /r/unity2D for any 2D specific questions and conversation! A User Showcase of the Unity Game Engine.