private void Backtrack(BoxRayCaster.RayTrigger trigger)
{
Vector2 rayDirection = trigger.RayDirection;
BoxCollider2D box = boxRayCaster.boxCollider2D;
Vector2 nowWorldCenter = transform.TransformPoint(box.offset);
Vector2 rayAbsDirection = new Vector2(Mathf.Abs(rayDirection.x), Mathf.Abs(rayDirection.y));
Vector2 lastWorldCenter = nowWorldCenter - Vector2.Scale(Velocity, rayAbsDirection) * UpdateTime;
float step = trigger.RayStep;
float length = 100;
ThreeRayCast threeRayCast = new ThreeRayCast(lastWorldCenter, rayDirection, step, length, backtrackLayer);
RaycastHit2D? result = threeRayCast.GetNearest();
Debug.Assert(result.HasValue);
Vector2 hitPoint = result.Value.point;
float deltaValue = trigger.GetWorldDirectionValue(lastWorldCenter, hitPoint);
//deltaValue += backtrackWidth;
if (trigger.GetNeedVector2Value(Velocity) != 0)
{
//Vector2 nextWorldCenter = lastWorldCenter + deltaValue / trigger.GetNeedVector2Value(Velocity) * Velocity;
Vector2 nextWorldCenter = lastWorldCenter + deltaValue * rayAbsDirection;
Position += nextWorldCenter - nowWorldCenter;
if (rayDirection.x == 0)
{
Velocity = new Vector2(Velocity.x, 0);
}
else
{
Velocity = new Vector2(0, Velocity.y);
}
}
}
private void AddEnterAction(BoxRayCaster.RayTrigger trigger, System.Action <RaycastHit2D> action)
{
trigger.enterAction += action;
destroyAction += () => {
trigger.enterAction -= action;
};
}
private void AddExitAction(BoxRayCaster.RayTrigger trigger, System.Action <Collider2D> action)
{
trigger.exitAction += action;
destroyAction += () => {
trigger.exitAction -= action;
};
}
private void ProcessCollisionBacktrack(BoxRayCaster.RayTrigger trigger)
{
if (trigger.CheckCollision(backtrackLayer))
{
velocityBeforeBacktrack = Velocity;
Backtrack(trigger);
}
}
public void DrawBoxTriggerStatus(string name, BoxRayCaster.RayTrigger trigger)
{
if (trigger != null)
{
EditorGUILayout.LabelField(name);
EditorGUILayout.TextArea(trigger.CollisionStatus);
}
}