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3D raycast

Find 3D objects that cross a line.

Authors and contributors to this experimental extension: D8H.

Warning

This is an extension made by a community member and it only got through a light review by the GDevelop extension team. As such, we can't guarantee it meets all the quality standards of fully reviewed extensions.

It can be useful to:

  • Find 3D objects under the pointer
  • Target objects from a 1st person view
  • Make AI that detect objects in their field of view

Tip

Learn how to install new extensions by following a step-by-step guide.

Conditions

Last recast distance
Compare the last recast intersection distance.

Raycast to a position
Sends a ray from the given source position to the final point, intersecting the closest object. The intersected object will become the only one taken into account.

Raycast from camera center
Sends a ray from the center of the camera, intersecting the closest object. The intersected object will become the only one taken into account.

Raycast from cursor
Sends a ray from the cursor on the camera screen, intersecting the closest object. The intersected object will become the only one taken into account.

Raycast from a camera point
Sends a ray from the given source point on the camera screen, intersecting the closest object. The intersected object will become the only one taken into account.

Raycast
Sends a ray from the given source position and angle, intersecting the closest object. The intersected object will become the only one taken into account.

Expressions

Expression Description
Raycaster3D::Distance() Return the last recast intersection distance.
Raycaster3D::IntersectionX() Return the last recast intersection position on X axis.
Raycaster3D::IntersectionY() Return the last recast intersection position on Y axis.
Raycaster3D::IntersectionZ() Return the last recast intersection position on Z axis.
Raycaster3D::NormalX() Return the last recast intersection normal on X axis.
Raycaster3D::NormalY() Return the last recast intersection normal on X axis.
Raycaster3D::NormalZ() Return the last recast intersection normal on Z axis.

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