/// <summary>
/// Run dynamic intersection test against all colliders. Return the earliest time of impact, or <c>1.0f</c> if no collisions occured.
/// </summary>
/// <remarks>This function will finish immediately if the earliest time of impact reaches 0.</remarks>
private static void CalculateActorEarliestTimeOfImpact(ActorRigidbody actor)
{
float time = 1f;
foreach (var staticbody in AllStatics)
{
if (time == 0)
{
break;
}
if (PhysicsMath.IntersectMoving(staticbody.MainCollider, actor.MainCollider, Vector2.Zero, actor.ProcessingData.CalcVel, out float first))
{
time = Math.Min(time, first);
}
}
foreach (var solid in AllSolids)
{
foreach (var solidCollider in solid.Colliders)
{
if (time == 0)
{
break;
}
if (PhysicsMath.IntersectMoving(solidCollider, actor.MainCollider, Vector2.Zero, actor.ProcessingData.CalcVel, out float first))
{
time = Math.Min(time, first);
}
}
}
actor.ProcessingData.TimeOfImpact = time;
}
/// <summary>
/// Collides the given actor against all other rigidbodies and calculate the allowed velocity during this frame.
/// </summary>
/// <remarks>This function will immediately return if the calculated velocity becomes zero.</remarks>
private static void CalculateActorVelocity(ActorRigidbody actor)
{
actor.ProcessingData.CalcVel = actor.Velocity;
if (actor.Velocity == Vector2.Zero)
{
return;
}
foreach (var staticbody in AllStatics)
{
if (actor.ProcessingData.CalcVel == Vector2.Zero)
{
return;
}
if (PhysicsMath.IsOverlapping(actor.MainCollider, staticbody.MainCollider))
{
if (!PhysicsMath.IsSlidingCorner(actor.MainCollider, staticbody.MainCollider))
{
actor.ProcessingData.CalcVel = VelocityMath.IntoPlane(actor.ProcessingData.CalcVel, PhysicsMath.GetNormal(actor.MainCollider, staticbody.MainCollider));
}
}
}
foreach (var solid in AllSolids)
{
foreach (var solidCollider in solid.Colliders)
{
if (actor.ProcessingData.CalcVel == Vector2.Zero)
{
return;
}
if (PhysicsMath.IsOverlapping(actor.MainCollider, solidCollider))
{
if (!PhysicsMath.IsSlidingCorner(actor.MainCollider, solidCollider))
{
actor.ProcessingData.CalcVel = VelocityMath.IntoPlane(actor.ProcessingData.CalcVel, PhysicsMath.GetNormal(actor.MainCollider, solidCollider));
}
}
}
}
}
