decentraland-scenes / Laser-ray-casting

A scene that shows how you can use Ray Casting to trace imaginary lines in space and check for object intersections.

Laser ray casting

A scene that shows how ray casting can be used to trace an imaginary line in space and check for object collision.

This scene shows you:

• How to use ray cast to check if an entity intersects with a line in space
• How to use ray cast to check if an entity is being pointed at by the player
• How to change a material on a primitive shape
• How to use a system to keep moving multiple entities as in a conveyor

Try it out

Install the CLI

Download and install the Decentraland CLI by running the following command:

npm i -g decentraland

Previewing the scene

Download this example and navigate to its directory, then run:

$:  dcl start

Any dependencies are installed and then the CLI opens the scene in a new browser tab.

Scene Usage

Notice that boxes that intersect with the laser change their material and become emissive while being hit. Also, if you point your cursor at a box it will change its color to green.

Learn more about how to build your own scenes in our documentation site.

If something doesn’t work, please file an issue.

Copyright info

This scene is protected with a standard Apache 2 licence. See the terms and conditions in the LICENSE file.