Collidable Gizmo

A single-purpose demo of CollidableGizmoScript, which draws the collider Bepu is actually using so it can be compared against the model you think you gave it. The cube here is created with IncludeCollider set to false and the gizmo left visible, which makes the point directly: the gizmo reports what physics knows about, and if nothing is drawn, nothing is there.

The Program.cs file shows how to:

Drawing the collider a body is really using
Suppressing the generated collider with IncludeCollider = false
Showing or hiding the gizmo with its Visible property
Diagnosing a body that does not collide as expected
Using helpers: SetupBase3DScene, AddSkybox, AddProfiler, Create3DPrimitive

Collidable Gizmo

View on GitHub.

using Stride.CommunityToolkit.Bepu;
using Stride.CommunityToolkit.Engine;
using Stride.CommunityToolkit.Rendering.ProceduralModels;
using Stride.CommunityToolkit.Skyboxes;
using Stride.Core.Mathematics;
using Stride.Engine;

const string SphereEntityName = "Sphere";

using var game = new Game();

game.Run(start: Start);

void Start(Scene rootScene)
{
    game.SetupBase3DScene();
    game.AddSkybox();
    game.AddProfiler();

    var entity = game.Create3DPrimitive(PrimitiveModelType.Cube, new()
    {
        IncludeCollider = false
    });
    entity.Transform.Position = new Vector3(1f, 0.5f, 3f);
    entity.Add(new CollidableGizmoScript()
    {
        Color = new Color4(0.4f, 0.843f, 0, 0.9f),
        Visible = true
    });
    entity.Scene = rootScene;

    CreateSpheres(rootScene, 6);
}

void CreateSpheres(Scene rootScene, int count)
{
    int half = count / 2;

    for (int i = -half; i < half; i++)
    {
        var entity = game.Create3DPrimitive(PrimitiveModelType.Cube, new() { EntityName = SphereEntityName });
        entity.Transform.Position = new Vector3(i * 0.99f, 1, 0);
        entity.Scene = rootScene;
    }
}

Table of Contents

Collidable Gizmo