protected bool IsSafe(Vector2 moveDirection, float distance, bool ignorePredict)
{
Vector2 start = m_Snake.GetHeadPosition();
Vector2 end = start + moveDirection * distance;
Vector2 direction = end - start;
Vector2 directionReciprocal = hwmMath.Reciprocal(direction);
if (!slWorld.GetInstance().GetMap().GetMapBox().IsInsideOrOn(end))
{
return(false);
}
for (int iNode = 0; iNode < ms_SnakeQuadtreeNodes.Count; iNode++)
{
hwmQuadtree <slSnake.QuadtreeElement> .Node iterNode = ms_SnakeQuadtreeNodes[iNode];
hwmBetterList <slSnake.QuadtreeElement> elements = iterNode.GetElements();
for (int iElement = elements.Count - 1; iElement >= 0; iElement--)
{
slSnake.QuadtreeElement iterElement = elements[iElement];
if (iterElement.Owner != m_Snake.GetGuid())
{
if (iterElement.NodeType != slConstants.NodeType.Predict)
{
if (iterElement.AABB.LineIntersection(start, end, direction, directionReciprocal))
{
return(false);
}
}
else if (!ignorePredict)
{
Quaternion rotation = Quaternion.Inverse(iterElement.GetRotation());
Vector2 center = iterElement.GetPosition();
start = hwmMath.QuaternionMultiplyVector(rotation, start - center);
end = hwmMath.QuaternionMultiplyVector(rotation, end - center);
if (((slSnake.PredictNode)iterElement).Box.LineIntersection(start, end))
{
return(false);
}
}
}
}
}
return(true);
}
