private void LateUpdate()
{
mLastFramePosition = this.transform.position;
if (mHitLeft && VelX < 0)
{
VelX = 0;
}
else if (mHitRight && VelX > 0)
{
VelX = 0;
}
#if (UNITY_EDITOR)
// draw the collider each frame.
JCS_Debug.DrawCollider(mBoxCollider2d, Color.cyan);
JCS_Debug.DrawCollider(mBoxCollider2d, Color.blue, mLastFrameColliderPosition);
#endif
// record down the last frame's collider's position
mLastFrameColliderPosition = JCS_Physics.GetColliderPosition(mBoxCollider2d);
}
/// <summary>
/// Draw the collider
/// </summary>
/// <param name="collider"> Collider u want to draw. </param>
/// <param name="col"> Color type. </param>
public static void DrawCollider(BoxCollider2D collider, Color col)
{
#if (UNITY_EDITOR)
// get width and height information.
Vector2 boxInfo = JCS_Physics.GetColliderInfo(collider);
Vector3 pos = JCS_Physics.GetColliderPosition(collider);
Vector3 topLeft = new Vector3(
pos.x - boxInfo.x / 2,
pos.y + boxInfo.y / 2);
Vector3 topRight = new Vector3(
pos.x + boxInfo.x / 2,
pos.y + boxInfo.y / 2);
Vector3 botRight = new Vector3(
pos.x + boxInfo.x / 2,
pos.y - boxInfo.y / 2);
Vector3 botLeft = new Vector3(
pos.x - boxInfo.x / 2,
pos.y - boxInfo.y / 2);
DrawRect(topLeft, topRight, botRight, botLeft, col);
#endif
}
// OPTIMIZE(jenchieh): no idea why on trigger enter
// wont set on top of the collider.
private void OnTriggerEnter2D(Collider2D other)
{
// check ray ignore.
if (other.GetComponent <JCS_RayIgnore>() != null)
{
return;
}
if (mZeroRotationWhenIsTrigger)
{
this.transform.eulerAngles = Vector3.zero;
}
// Detect Right
{
Vector3 right = transform.TransformDirection(Vector3.right);
RaycastHit2D[] hits = Physics2D.RaycastAll(
JCS_Physics.GetColliderPosition(mBoxCollider2d),
right,
mBoxInfo.x / 2 + mDetectDistance);
#if (UNITY_EDITOR)
//Debug.DrawRay(transform.position, right, Color.green);
#endif
foreach (RaycastHit2D hit in hits)
{
BoxCollider2D bc2d = hit.transform.GetComponent <BoxCollider2D>();
// ignore the tag.
if (hit.transform.GetComponent <JCS_RayIgnore>() != null ||
bc2d == null ||
hit.transform == this.transform ||
hit.transform != other.transform)
{
continue;
}
mHitRight = true;
mVelocity.x = 0;
Vector3 newPos = this.transform.position;
newPos.x = mCurrentFrame.x;
this.transform.position = newPos;
// fix collision.
JCS_Physics.SetOnLeftOfBox(mBoxCollider2d, bc2d);
// check if colllider in array already
bool found = false;
foreach (Collider2D temp in mRightColliders)
{
if (temp.transform == other.transform)
{
found = true;
}
}
// if not found.
if (!found)
{
mRightColliders.Add(other);
}
return;
}
}
// Detect Left
{
Vector3 left = transform.TransformDirection(Vector3.left);
RaycastHit2D[] hits = Physics2D.RaycastAll(
JCS_Physics.GetColliderPosition(mBoxCollider2d),
left,
mBoxInfo.x / 2 + mDetectDistance);
#if (UNITY_EDITOR)
//Debug.DrawRay(transform.position, left, Color.green);
#endif
foreach (RaycastHit2D hit in hits)
{
BoxCollider2D bc2d = hit.transform.GetComponent <BoxCollider2D>();
// ignore the tag.
if (hit.transform.GetComponent <JCS_RayIgnore>() != null ||
bc2d == null ||
hit.transform == this.transform ||
hit.transform != other.transform)
{
continue;
}
mHitLeft = true;
mVelocity.x = 0;
Vector3 newPos = this.transform.position;
newPos.x = mCurrentFrame.x;
this.transform.position = newPos;
// fix collision.
JCS_Physics.SetOnRightOfBox(mBoxCollider2d, bc2d);
// check if colllider in array already
bool found = false;
foreach (Collider2D temp in mLeftColliders)
{
if (temp.transform == other.transform)
{
found = true;
}
}
// if not found.
if (!found)
{
mLeftColliders.Add(other);
}
return;
}
}
// Detect bottom
{
Vector3 down = transform.TransformDirection(Vector3.down);
// NOTE(jenchieh): box info .x are the same as saying the width.
//RaycastHit2D[] hits = Physics2D.RaycastAll(transform.position, down, mBoxInfo.y / 2 + mDetectDistance);
RaycastHit2D[] hits = Physics2D.CircleCastAll(
JCS_Physics.GetColliderPosition(mBoxCollider2d),
mBoxInfo.x,
down,
mBoxInfo.y / 2 + mDetectDistance);
#if (UNITY_EDITOR)
//Debug.DrawRay(transform.position, down, Color.green);
#endif
foreach (RaycastHit2D hit in hits)
{
BoxCollider2D bc2d = hit.transform.GetComponent <BoxCollider2D>();
// ignore the tag.
if (hit.transform.GetComponent <JCS_RayIgnore>() != null ||
bc2d == null ||
hit.transform == this.transform ||
hit.transform != other.transform)
{
continue;
}
mHitBottom = true;
Vector3 newPos = this.transform.position;
newPos.y = mCurrentFrame.y;
this.transform.position = newPos;
// fixed collision
JCS_Physics.SetOnTopOfBox(mBoxCollider2d, bc2d);
// check if colllider in array already
bool found = false;
foreach (Collider2D temp in mBottomColliders)
{
if (temp.transform == other.transform)
{
found = true;
}
}
// if not found.
if (!found)
{
mBottomColliders.Add(other);
}
break;
}
}
// Detect top
{
Vector3 top = transform.TransformDirection(Vector3.up);
// NOTE(jenchieh): box info .x are the same as saying the width.
RaycastHit2D[] hits = Physics2D.RaycastAll(
JCS_Physics.GetColliderPosition(mBoxCollider2d),
top,
mBoxInfo.y / 2 + mDetectDistance);
#if (UNITY_EDITOR)
//Debug.DrawRay(transform.position, top, Color.green);
#endif
foreach (RaycastHit2D hit in hits)
{
BoxCollider2D bc2d = hit.transform.GetComponent <BoxCollider2D>();
// ignore the tag.
if (hit.transform.GetComponent <JCS_RayIgnore>() != null ||
bc2d == null ||
hit.transform == this.transform)
{
continue;
}
mHitTop = true;
Vector3 newPos = this.transform.position;
newPos.y = mCurrentFrame.y;
this.transform.position = newPos;
// fixed collision
JCS_Physics.SetOnBottomOfBox(mBoxCollider2d, bc2d);
// check if colllider in array already
bool found = false;
foreach (Collider2D temp in mTopColliders)
{
if (temp.transform == other.transform)
{
found = true;
}
}
// if not found.
if (!found)
{
mTopColliders.Add(other);
}
break;
}
}
if (!mHitLeft && !mHitRight)
{
// record down the frame.
mCurrentFrame = this.transform.position;
}
}