/// <summary>
/// Check if the character controller top of the box with the
/// slop calculation.
/// </summary>
/// <param name="cap"> character controller to test. </param>
/// <param name="rect"> box to test. </param>
/// <returns>
/// true : is top of box.
/// false : vice versa.
/// </returns>
public static bool TopOfBoxWithSlope(CharacterController cap, BoxCollider rect)
{
float innerAngle = rect.transform.localEulerAngles.z;
// if no angle interact, just use the normal one.
if (innerAngle == 0)
{
return(TopOfBox(cap, rect));
}
/* Capsule */
Vector3 capScale = cap.transform.localScale;
capScale = JCS_Mathf.AbsoluteValue(capScale);
Vector3 cCenter = new Vector3(
cap.center.x * capScale.x,
cap.center.y * capScale.y,
cap.center.z * capScale.z);
Vector3 capCenterPos = cap.transform.position + cCenter;
float cR = cap.radius * capScale.x;
float cH = (cap.height - (cap.radius * 2.0f)) * capScale.y;
// capsule botton point position.
float cBotBound = cap.transform.position.y + cCenter.y - (cH / 2.0f) - cR;
/* Box */
Vector3 rectScale = rect.transform.localScale;
rectScale = JCS_Mathf.AbsoluteValue(rectScale);
float rectWidth = rect.size.x * rectScale.x;
float rectHeight = rect.size.y * rectScale.y;
Vector3 rectCenter = new Vector3(
rect.center.x * rectScale.x,
rect.center.y * rectScale.y,
rect.center.z * rectScale.z);
Vector3 rectCenterPos = rect.transform.position + rectCenter;
float radianInnerAngle = JCS_Mathf.DegreeToRadian(innerAngle);
// at here 'rectHeight' are the same as 'adjacent'.
// hyp = adj / cos(Θ)
/* 斜角度的高度. */
float hypHeight = (rectHeight / Mathf.Cos(radianInnerAngle)) / 2;
// 求'水平寬'.
// adj = cos(Θ) * hyp
float rectLeftToRight = Mathf.Cos(radianInnerAngle) * rectWidth;
// 求'垂直高'.
float rectTopAndBot = Mathf.Sin(radianInnerAngle) * rectWidth;
float distRectLeftToCapCenter = JCS_Mathf.DistanceOfUnitVector(
capCenterPos.x,
rectCenterPos.x - (rectLeftToRight / 2));
/* Check if the capsule inside the the rect on x-axis. */
{
float distCapToBox = JCS_Mathf.DistanceOfUnitVector(
capCenterPos.x,
rectCenterPos.x);
if (distCapToBox > rectLeftToRight / 2)
{
return(false);
}
}
float heightToCapBot = JCS_Mathf.CrossMultiply(
rectLeftToRight,
distRectLeftToCapCenter,
rectTopAndBot);
#if (UNITY_EDITOR)
Debug.DrawLine(
new Vector3(
rectCenterPos.x - (rectLeftToRight / 2) + distRectLeftToCapCenter,
rectCenterPos.y - (rectTopAndBot / 2),
rectCenterPos.z),
new Vector3(
rectCenterPos.x - (rectLeftToRight / 2) + distRectLeftToCapCenter,
rectCenterPos.y + heightToCapBot + hypHeight - (rectTopAndBot / 2),
rectCenterPos.z),
Color.cyan);
#endif
// 在平台上的點.
float pointOnPlatform = rectCenterPos.y + heightToCapBot + hypHeight - (rectTopAndBot / 2);
if (pointOnPlatform <= cBotBound)
{
return(true);
}
return(false);
}
/// <summary>
/// Set the box collider ontop of the other box collider
/// with slop as a variable.
/// </summary>
/// <param name="setBox"> box we are setting on top of the other box </param>
/// <param name="beSetBox"> box be under the setting box </param>
/// <returns></returns>
public static Vector3 SetOnTopOfBoxWithSlope(BoxCollider topBox, BoxCollider botBox, float offset = 0)
{
float innerAngle = botBox.transform.localEulerAngles.z;
// if no angle interact, just use the normal one.
if (innerAngle == 0)
{
return(SetOnTopOfBox(topBox, botBox));
}
/* Top Box */
Vector3 topBoxScale = topBox.transform.localScale;
topBoxScale = JCS_Mathf.AbsoluteValue(topBoxScale);
Vector2 topBoxWH = GetColliderWidthHeight(topBox);
Vector3 topBoxCenter = new Vector3(
topBox.center.x * topBoxScale.x,
topBox.center.y * topBoxScale.y,
topBox.center.z * topBoxScale.z);
Vector3 topBoxCenterPos = topBox.transform.position + topBoxCenter;
/* Bot Box */
Vector3 rectScale = botBox.transform.localScale;
rectScale = JCS_Mathf.AbsoluteValue(rectScale);
float rectWidth = botBox.size.x * rectScale.x;
float rectHeight = botBox.size.y * rectScale.y;
Vector3 rectCenter = new Vector3(
botBox.center.x * rectScale.x,
botBox.center.y * rectScale.y,
botBox.center.z * rectScale.z);
Vector3 rectCenterPos = botBox.transform.position + rectCenter;
float radianInnerAngle = JCS_Mathf.DegreeToRadian(innerAngle);
// at here 'rectHeight' are the same as 'adjacent'.
// hyp = adj / cos(Θ)
/* 斜角度的高度. */
float hypHeight = (rectHeight / Mathf.Cos(radianInnerAngle)) / 2;
// 求'水平寬'.
// adj = cos(Θ) * hyp
float rectLeftToRight = Mathf.Cos(radianInnerAngle) * rectWidth;
// 求'垂直高'.
float rectTopAndBot = Mathf.Sin(radianInnerAngle) * rectWidth;
float distRectLeftToCapCenter = JCS_Mathf.DistanceOfUnitVector(
topBoxCenterPos.x,
rectCenterPos.x - (rectLeftToRight / 2));
/* Check if the capsule inside the the rect on x-axis. */
{
float distCapToBox = JCS_Mathf.DistanceOfUnitVector(
topBoxCenterPos.x,
rectCenterPos.x);
if (distCapToBox > rectLeftToRight / 2)
{
return(Vector3.zero);
}
}
float heightToCapBot = JCS_Mathf.CrossMultiply(
rectLeftToRight,
distRectLeftToCapCenter,
rectTopAndBot);
#if (UNITY_EDITOR)
Debug.DrawLine(
new Vector3(
rectCenterPos.x - (rectLeftToRight / 2) + distRectLeftToCapCenter,
rectCenterPos.y - (rectTopAndBot / 2),
rectCenterPos.z),
new Vector3(
rectCenterPos.x - (rectLeftToRight / 2) + distRectLeftToCapCenter,
rectCenterPos.y + heightToCapBot + hypHeight - (rectTopAndBot / 2),
rectCenterPos.z),
Color.cyan);
#endif
// 在平台上的點.
float pointOnPlatform = rectCenterPos.y + heightToCapBot + hypHeight - (rectTopAndBot / 2);
/** ------------------------------------------- **/
Vector3 newPos = topBoxCenterPos;
newPos.y = pointOnPlatform + (topBoxWH.y / 2);
topBox.transform.position = newPos - topBoxCenter;
return(newPos);
}