CharacterController2D.moveVertically C# (CSharp) Method

	private void moveVertically( ref Vector3 deltaMovement )
	{
		var isGoingUp = deltaMovement.y > 0;
		var rayDistance = Mathf.Abs( deltaMovement.y ) + _skinWidth;
		var rayDirection = isGoingUp ? Vector2.up : -Vector2.up;
		var initialRayOrigin = isGoingUp ? _raycastOrigins.topLeft : _raycastOrigins.bottomLeft;

		// apply our horizontal deltaMovement here so that we do our raycast from the actual position we would be in if we had moved
		initialRayOrigin.x += deltaMovement.x;

		// if we are moving up, we should ignore the layers in oneWayPlatformMask
		var mask = platformMask;
		if( isGoingUp && !collisionState.wasGroundedLastFrame )
			mask &= ~oneWayPlatformMask;

		for( var i = 0; i < totalVerticalRays; i++ )
		{
			var ray = new Vector2( initialRayOrigin.x + i * _horizontalDistanceBetweenRays, initialRayOrigin.y );

			DrawRay( ray, rayDirection * rayDistance, Color.red );
			_raycastHit = Physics2D.Raycast( ray, rayDirection, rayDistance, mask );
			if( _raycastHit )
			{
				// set our new deltaMovement and recalculate the rayDistance taking it into account
				deltaMovement.y = _raycastHit.point.y - ray.y;
				rayDistance = Mathf.Abs( deltaMovement.y );

				// remember to remove the skinWidth from our deltaMovement
				if( isGoingUp )
				{
					deltaMovement.y -= _skinWidth;
					collisionState.above = true;
				}
				else
				{
					deltaMovement.y += _skinWidth;
					collisionState.below = true;
				}

				_raycastHitsThisFrame.Add( _raycastHit );

				// this is a hack to deal with the top of slopes. if we walk up a slope and reach the apex we can get in a situation
				// where our ray gets a hit that is less then skinWidth causing us to be ungrounded the next frame due to residual velocity.
				if( !isGoingUp && deltaMovement.y > 0.00001f )
					_isGoingUpSlope = true;

				// we add a small fudge factor for the float operations here. if our rayDistance is smaller
				// than the width + fudge bail out because we have a direct impact
				if( rayDistance < _skinWidth + kSkinWidthFloatFudgeFactor )
					return;
			}
		}
	}