RaycastCommand

Description 描述

Struct used to set up a raycast command to be performed asynchronously during a job.

When you use this struct to schedule a batch of raycasts, they will be performed asynchronously and in parallel to each other. The results of the raycasts are written to the results buffer. Since the results are written asynchronously the results buffer cannot be accessed until the job has been completed.

The result for a command at index N in the command buffer will be stored at index N * maxHits in the results buffer.

If maxHits is larger than the actual number of results for the command the result buffer will contain some invalid results which did not hit anything. The first invalid result is identified by the collider being null. The second and later invalid results are not written to by the raycast command so their colliders are not guaranteed to be null. When iterating over the results the loop should stop when the first invalid result is found.

See Also: Physics.Raycast, Physics.RaycastAll.

using Unity.Collections;
using Unity.Jobs;
using UnityEngine;

public class Example : MonoBehaviour
{
    private void RaycasExample()
    {
        // Perform a single raycast using RaycastCommand and wait for it to complete
        // Setup the command and result buffers
        var results = new NativeArray<RaycastHit>(1, Allocator.Temp);

        var commands = new NativeArray<RaycastCommand>(1, Allocator.Temp);

        // Set the data of the first command
        Vector3 origin = Vector3.forward * -10;

        Vector3 direction = Vector3.forward;

        commands[0] = new RaycastCommand(origin, direction);

        // Schedule the batch of raycasts
        JobHandle handle = RaycastCommand.ScheduleBatch(commands, results, 1, default(JobHandle));

        // Wait for the batch processing job to complete
        handle.Complete();

        // Copy the result. If batchedHit.collider is null there was no hit
        RaycastHit batchedHit = results[0];

        // Dispose the buffers
        results.Dispose();
        commands.Dispose();
    }
}

Properties 属性

Constructors

Static Methods 静态方法