s&box

TopDownCameraFollow.cs

A scene component that positions an orthographic top-down camera to follow a local player. It finds the main CameraComponent and local PlayerController on start, disables player camera/look controls, sets orthographic mode and height, and each update places the camera at a fixed offset and orients it to look at the player.

Native Interop

using Sandbox;
using System.Linq;

public sealed class TopDownCameraFollow : Component
{
    [Property] public Vector3 CameraOffset { get; set; } = new Vector3( -500f, -500f, 1200f );
    [Property] public float OrthographicHeight { get; set; } = 1400f;

    private CameraComponent _camera;
    private PlayerController _localPlayer;

    protected override void OnStart()
    {
        _camera = Scene.GetAllComponents<CameraComponent>().FirstOrDefault( camera => camera.IsMainCamera );
        if ( _camera.IsValid() )
        {
            _camera.Orthographic = true;
            _camera.OrthographicHeight = OrthographicHeight;
        }

        _localPlayer = Scene.GetAllComponents<PlayerController>()
            .FirstOrDefault( player => player.IsValid() && !player.IsProxy && player.GameObject.IsValid() );
        if ( _localPlayer.IsValid() )
        {
            _localPlayer.UseCameraControls = false;
            _localPlayer.UseLookControls = false;
        }
    }

    protected override void OnUpdate()
    {
        if ( IsProxy ) return;

        if ( !_camera.IsValid() || !_localPlayer.IsValid() ) return;

        Vector3 targetPosition = _localPlayer.WorldPosition;
        Vector3 cameraPosition = targetPosition + CameraOffset;
        _camera.GameObject.WorldPosition = cameraPosition;
        _camera.GameObject.WorldRotation = Rotation.LookAt( targetPosition - cameraPosition );
    }
}