public bool FindLedgeAtPoint(Vector3 start, Vector3 dir, float maxDistance, float deltaHeight, out LedgeInfo ledgeInfo)
{
int notPlayerLayer = ~(1 << 8);
// Horizontal check
//
RaycastHit hHit;
if (!Physics.Raycast(start, dir, out hHit, maxDistance, notPlayerLayer, QueryTriggerInteraction.Ignore))
{
goto NoLedge;
}
bool isMoving = hHit.collider.CompareTag("MovingPlatform");
if (hHit.collider.CompareTag("Freeclimb"))
{
ledgeInfo = new LedgeInfo(LedgeType.Free, new Vector3(hHit.point.x, start.y, hHit.point.z), -hHit.normal, hHit.collider);
return(true);
}
// Vertical check
//
RaycastHit vHit;
start = hHit.point + (dir * minDepth);
start.y += deltaHeight;
if (!Physics.Raycast(start, Vector3.down, out vHit, deltaHeight, notPlayerLayer, QueryTriggerInteraction.Ignore))
{
goto NoLedge;
}
Vector3 rightNormal = vHit.normal - Vector3.Scale(vHit.normal, UMath.MakeXYZPositive(-hHit.normal));
// Check angle is shallow enough sideways (think shimmying up when going sideways)
//
float angleRight = Vector3.Angle(Vector3.up, rightNormal);
if (angleRight > maxRightAngle)
{
goto NoLedge;
}
// Check angle is shallow enough straight in front (think grabbing bottom of slope)
//
Vector3 ledgeRight = Vector3.Cross(Vector3.up, hHit.normal).normalized;
Vector3 forwardNormal = vHit.normal - Vector3.Scale(vHit.normal, UMath.MakeXYZPositive(ledgeRight));
float angleForward = Vector3.Angle(Vector3.up, forwardNormal);
if (angleForward > maxForwardAngle)
{
goto NoLedge;
}
// Resolve so Lara grabs correct point on a slope
float offset = minDepth * Mathf.Tan(angleForward * Mathf.Deg2Rad);
Vector3 ledgePoint = new Vector3(hHit.point.x, vHit.point.y - offset, hHit.point.z);
// Check nothing blocking vertically
//
start = ledgePoint + hHit.normal * 0.1f - Vector3.up * 0.1f;
if (Physics.Raycast(start, Vector3.up, 0.2f, notPlayerLayer, QueryTriggerInteraction.Ignore))
{
goto NoLedge;
}
start = ledgePoint + hHit.normal * 0.1f + Vector3.up * 0.1f;
if (Physics.Raycast(start, Vector3.down, 0.2f, notPlayerLayer, QueryTriggerInteraction.Ignore))
{
goto NoLedge;
}
// Check minimum depth
start = ledgePoint + Vector3.up * 0.1f + hHit.normal * 0.1f;
if (Physics.Raycast(start, -hHit.normal, minDepth + 0.1f, notPlayerLayer, QueryTriggerInteraction.Ignore))
{
goto NoLedge;
}
ledgeInfo = new LedgeInfo(LedgeType.Normal, ledgePoint, -hHit.normal, vHit.normal, hHit.collider, angleForward, angleRight);
return(true);
NoLedge:
ledgeInfo = new LedgeInfo();
return(false);
}