private void CastRaysAbove()
{
float rayLength = State.IsGrounded?RayOffset : _newPosition.y * Time.deltaTime;
rayLength += _rayBoundsRectangle.height / 2;
bool hitConnected = false;
int hitConnectedIndex = 0;
Vector2 verticalRayCastStart = new Vector2(_rayBoundsRectangle.xMin + _newPosition.x,
_rayBoundsRectangle.center.y);
Vector2 verticalRayCastEnd = new Vector2(_rayBoundsRectangle.xMax + _newPosition.x,
_rayBoundsRectangle.center.y);
RaycastHit2D[] hitsStorage = new RaycastHit2D[NumberOfVerticalRays];
for (int i = 0; i < NumberOfVerticalRays; i++)
{
Vector2 rayOriginPoint = Vector2.Lerp(verticalRayCastStart, verticalRayCastEnd, (float)i / (float)(NumberOfVerticalRays - 1));
hitsStorage[i] = GameTools.GameRaycast(rayOriginPoint, Vector2.up, rayLength, PlatformMask & ~EdgeColliderPlatformMask, true, Color.green);
if (hitsStorage[i])
{
hitConnected = true;
hitConnectedIndex = i;
break;
}
}
if (hitConnected)
{
_speed.y = 0;
_newPosition.y = hitsStorage[hitConnectedIndex].distance - _rayBoundsRectangle.height / 2;
State.IsCollidingAbove = true;
}
}
private void CastRaysBelow()
{
if (_newPosition.y < -_smallValue)
{
State.IsFalling = true;
}
else
{
State.IsFalling = false;
}
if ((Parameters.Gravity > 0) && (!State.IsFalling))
{
return;
}
float rayLength = _rayBoundsRectangle.height / 2 + RayOffset;
if (_newPosition.y < 0)
{
rayLength += Mathf.Abs(_newPosition.y);
}
Vector2 verticalRayCastFromLeft = new Vector2(_rayBoundsRectangle.xMin + _newPosition.x,
_rayBoundsRectangle.center.y + RayOffset);
Vector2 verticalRayCastToRight = new Vector2(_rayBoundsRectangle.xMax + _newPosition.x,
_rayBoundsRectangle.center.y + RayOffset);
RaycastHit2D[] hitsStorage = new RaycastHit2D[NumberOfVerticalRays];
float smallestDistance = _largeValue;
int smallestDistanceIndex = 0;
bool hitConnected = false;
for (int i = 0; i < NumberOfVerticalRays; i++)
{
Vector2 rayOriginPoint = Vector2.Lerp(verticalRayCastFromLeft, verticalRayCastToRight, (float)i / (float)(NumberOfVerticalRays - 1));
if ((_newPosition.y > 0) && (!State.WasGroundedLastFrame))
{
hitsStorage[i] = GameTools.GameRaycast(rayOriginPoint, -Vector2.up, rayLength, PlatformMask & ~EdgeColliderPlatformMask, true, Color.blue);
}
else
{
hitsStorage[i] = GameTools.GameRaycast(rayOriginPoint, -Vector2.up, rayLength, PlatformMask, true, Color.blue);
}
if ((Mathf.Abs(hitsStorage[smallestDistanceIndex].point.y - verticalRayCastFromLeft.y)) < _smallValue)
{
break;
}
if (hitsStorage[i])
{
hitConnected = true;
if (hitsStorage[i].distance < smallestDistance)
{
smallestDistanceIndex = i;
smallestDistance = hitsStorage[i].distance;
}
}
}
if (hitConnected)
{
State.IsFalling = false;
State.IsCollidingBelow = true;
_newPosition.y = -Mathf.Abs(hitsStorage[smallestDistanceIndex].point.y - verticalRayCastFromLeft.y)
+ _rayBoundsRectangle.height / 2
+ RayOffset;
if (_externalForce.y > 0)
{
_newPosition.y += _speed.y * Time.deltaTime;
State.IsCollidingBelow = false;
}
if (!State.WasGroundedLastFrame && _speed.y > 0)
{
_newPosition.y += _speed.y * Time.deltaTime;
}
if (Mathf.Abs(_newPosition.y) < _smallValue)
{
_newPosition.y = 0;
}
StandingOn = hitsStorage[smallestDistanceIndex].collider.gameObject;
PathFollow movingPlatform = hitsStorage[smallestDistanceIndex].collider.GetComponent <PathFollow>();
if (movingPlatform != null)
{
_transform.Translate(movingPlatform.CurrentSpeed * Time.deltaTime);
}
}
else
{
State.IsCollidingBelow = false;
}
}
//角色左右上下射線碰撞偵測
private void CastRaysToTheSides()
{
float movementDirection = 1;
if ((_newPosition.x < 0) || (_externalForce.x < 0))
{
movementDirection = -1;
}
float horizontalRayLength = Mathf.Abs(_speed.x * Time.deltaTime) + _rayBoundsRectangle.width / 2 + RayOffset;
Vector2 horizontalRayCastFromBottom = new Vector2(_rayBoundsRectangle.center.x,
_rayBoundsRectangle.yMin + _obstacleHeightTolerance);
Vector2 horizontalRayCastToTop = new Vector2(_rayBoundsRectangle.center.x,
_rayBoundsRectangle.yMax);
RaycastHit2D[] hitsStorage = new RaycastHit2D[NumberOfHorizontalRays];
for (int i = 0; i < NumberOfHorizontalRays; i++)
{
Vector2 rayOriginPoint = Vector2.Lerp(horizontalRayCastFromBottom, horizontalRayCastToTop, (float)i / (float)(NumberOfHorizontalRays - 1));
if (State.WasGroundedLastFrame && i == 0)
{
hitsStorage[i] = GameTools.GameRaycast(rayOriginPoint, movementDirection * Vector2.right, horizontalRayLength, PlatformMask, true, Color.red);
}
else
{
hitsStorage[i] = GameTools.GameRaycast(rayOriginPoint, movementDirection * Vector2.right, horizontalRayLength, PlatformMask & ~EdgeColliderPlatformMask, true, Color.red);
}
if (hitsStorage[i].distance > 0)
{
float hitAngle = Mathf.Abs(Vector2.Angle(hitsStorage[i].normal, Vector2.up));
if (hitAngle > Parameters.MaximumSlopeAngle)
{
if (movementDirection < 0)
{
State.IsCollidingLeft = true;
}
else
{
State.IsCollidingRight = true;
}
State.SlopeAngleOK = false;
if (movementDirection <= 0)
{
_newPosition.x = -Mathf.Abs(hitsStorage[i].point.x - horizontalRayCastFromBottom.x)
+ _rayBoundsRectangle.width / 2
+ RayOffset;
}
else
{
_newPosition.x = Mathf.Abs(hitsStorage[i].point.x - horizontalRayCastFromBottom.x)
- _rayBoundsRectangle.width / 2
- RayOffset;
}
_speed = new Vector2(0, _speed.y);
break;
}
}
}
}