/// <summary>
/// Runs a raycast from the faction member to an actor to determine if vision is clear or blocked.
/// This method is public to expose it to delegates that might need it when overriding default
/// functionality.
/// </summary>
/// <param name="me">This faction member's eyes transform.</param>
/// <param name="other">The transform of the actor we're trying to witness.</param>
/// <param name="layerMask">The raycast layermask.</param>
/// <param name="dimension">The dimension in which to run the raycast.</param>
/// <returns></returns>
public GameObject Raycast(Transform me, Transform other, LayerMask layerMask, Dimension dimension)
{
switch (dimension)
{
case Dimension.Is2D:
return(MorePhysics2D.Raycast2DWithoutSelf(me, other, layerMask));
default:
case Dimension.Is3D:
RaycastHit hitInfo;
var hit = Physics.Linecast(me.position, other.position, out hitInfo, layerMask);
return(hit ? hitInfo.collider.gameObject : null);
}
}
protected Vector2 MoveIntelligentlyTowards(Vector2 position, float precision)
{
// Figure out what direction we're facing based on our animator
var direction = (transform.position.x > position.x) ? -1 : 1;
if (transform.position.x.IsWithin(precision, position.x))
{
// if we're in the air, and nothing is below us, force us to keep moving so we don't fall
if (!IsGrounded && groundCheckHit.transform == null)
{
return(new Vector2(direction * moveSpeed, CurrentVelocity.y));
}
// if we're close enough to the position we seek, set to zero (but maintain gravity)
return(new Vector2(0f, CurrentVelocity.y));
}
// Tell the animator to face towards the position
animator.FaceTowardsPosition(position);
var footCenter = GetFeetCenter();
// Checks if there is ground in front of us
groundCheckHit = MorePhysics2D.RaycastOther(gameObject, CreateCloseGroundRay(direction, footCenter), groundCheckDistance, groundLayers, -999, 999);
// Checks if there's something we can jump over to
jumpAcrossHit = MorePhysics2D.RaycastOther(gameObject, CreateJumpAcrossRay(direction, footCenter), jumpAcrossDistance, groundLayers, -999, 999);
// Checks if something is in front of us
forwardCheckHit = MorePhysics2D.RaycastOther(gameObject, CreateForwardRay(direction), forwardCheckDistance, groundLayers, -999, 999);
// Check if something is above us
jumpUpHit = MorePhysics2D.RaycastOther(gameObject, CreateJumpUpRay(direction), jumpUpDistance, groundLayers, -999, 999);
// Checks if there's something we can jump down to
jumpDownHit = MorePhysics2D.RaycastOther(gameObject, CreateJumpDownRay(direction, footCenter), jumpDownDistance, groundLayers, -999, 999);
// if there's a solid in front of us or we're falling
if (groundCheckHit.transform != null || !IsGrounded)
{
// Nothing is in our way
if (forwardCheckHit.transform == null)
{
// Move towards the destination
return(new Vector2(Mathf.Sign(direction) * moveSpeed, CurrentVelocity.y));
}
// Something is in our way but we can jump over it
else if (jumpUpHit.transform == null && CurrentVelocity.y.IsWithin(0.1f, 0))
{
// Jump straight up in the air (next frame will carry our velocity towards our destination)
animator.Jump();
AddRigidBodyForce(0, jumpHeight);
return(new Vector2(0, CurrentVelocity.y));
}
}
// if we are on the ground but there's a gap in front of us
else if (groundCheckHit.transform == null && IsGrounded)
{
// There's some ground to jump over to
if (jumpAcrossHit.transform != null && CurrentVelocity.y.IsWithin(0.1f, 0))
{
// Jump straight up in the air (next frame will carry our velocity towards our destination)
animator.Jump();
AddRigidBodyForce(0, jumpHeight);
return(new Vector2(0, CurrentVelocity.y));
}
// There's nothing to jump over to, but we can drop down to floor below us
else if (jumpDownHit.transform != null)
{
// Move towards the destination
return(new Vector2(Mathf.Sign(direction) * moveSpeed, CurrentVelocity.y));
}
}
// If we get here, the AI has no idea what to do so just wait
return(new Vector2(0, CurrentVelocity.y));
}