private bool CircleSquareCheck(Entity circle, Entity square)
{
//square
ComponentTransform squareTransformComponent = (ComponentTransform)square.FindComponent(ComponentTypes.COMPONENT_TRANSFORM);
ComponentCollisionBox collisionBoxComponent = (ComponentCollisionBox)square.FindComponent(ComponentTypes.COMPONENT_COLLISION_BOX);
Matrix4 squareTransform = squareTransformComponent.Transform;
Vector4 point1 = squareTransform * new Vector4(collisionBoxComponent.Point1, 1);
Vector4 point2 = squareTransform * new Vector4(collisionBoxComponent.Point2.X, point1.Y, point1.Z, 1);
Vector4 point3 = squareTransform * new Vector4(point1.X, point1.Y, collisionBoxComponent.Point2.Z, 1);
Vector4 point4 = squareTransform * new Vector4(collisionBoxComponent.Point2, 1);
Vector3[] points = { point1.Xyz, point2.Xyz, point3.Xyz, point4.Xyz };
//circle
ComponentTransform circleTransformComponent = (ComponentTransform)circle.FindComponent(ComponentTypes.COMPONENT_TRANSFORM);
ComponentCollisionCircle collisionCircleComponent = (ComponentCollisionCircle)circle.FindComponent(ComponentTypes.COMPONENT_COLLISION_CIRCLE);
Vector3 circlePosition = circleTransformComponent.Position;
float radius = collisionCircleComponent.Radius * circleTransformComponent.Scale.X;
//WARNING: radius scales off of X, not the largest scalar
return(IsPointInPolygon(points, circlePosition) ||
IsIntersectingCircle(circlePosition, radius, point1.Xyz, point2.Xyz) ||
IsIntersectingCircle(circlePosition, radius, point2.Xyz, point3.Xyz) ||
IsIntersectingCircle(circlePosition, radius, point3.Xyz, point4.Xyz) ||
IsIntersectingCircle(circlePosition, radius, point4.Xyz, point1.Xyz));
}
private bool SquareSquareCheck(Entity square1, Entity square2)
{
//square1
ComponentCollisionBox collisionComponent1 = (ComponentCollisionBox)square1.FindComponent(ComponentTypes.COMPONENT_COLLISION_BOX);
bool shouldScale = collisionComponent1.ShouldScale;
Matrix4 transform1 = GetTransform(square1, shouldScale);
Vector3 collision1_1 = collisionComponent1.Point1;
Vector3 collision1_2 = collisionComponent1.Point2;
//square2
ComponentCollisionBox collisionComponent2 = (ComponentCollisionBox)square2.FindComponent(ComponentTypes.COMPONENT_COLLISION_BOX);
shouldScale = collisionComponent2.ShouldScale;
Matrix4 transform2 = GetTransform(square2, shouldScale);
Vector3 collision2_1 = collisionComponent2.Point1;
Vector3 collision2_2 = collisionComponent2.Point2;
Vector4 p1_1 = new Vector4(collision1_1, 1) * transform1;
Vector4 p1_2 = new Vector4(collision1_2, 1) * transform1;
Vector4 p2_1 = new Vector4(collision2_1, 1) * transform2;
Vector4 p2_2 = new Vector4(collision2_2, 1) * transform2;
// Collision x-axis?
bool collisionX = p1_2.X >= p2_1.X &&
p1_1.X <= p2_2.X;
// Collision z-axis?
bool collisionZ = p1_2.Z >= p2_1.Z &&
p1_1.Z <= p2_2.Z;
// Collision only if on both axes
return(collisionX && collisionZ);
}
private static XmlNode SaveComponentCollisionBox(XmlDocument file, ComponentCollisionBox component)
{
XmlNode collisionBoxNode = file.CreateElement("CollisionBox");
//point1
Vector3 point1 = component.Point1;
XmlNode point1Node = file.CreateElement("point1");
collisionBoxNode.AppendChild(point1Node);
XmlNode xNode = file.CreateElement("x");
xNode.InnerText = point1.X.ToString();
point1Node.AppendChild(xNode);
XmlNode yNode = file.CreateElement("y");
yNode.InnerText = point1.Y.ToString();
point1Node.AppendChild(yNode);
XmlNode zNode = file.CreateElement("z");
zNode.InnerText = point1.Z.ToString();
point1Node.AppendChild(zNode);
//point2
Vector3 point2 = component.Point2;
XmlNode point2Node = file.CreateElement("point1");
collisionBoxNode.AppendChild(point2Node);
xNode = file.CreateElement("x");
xNode.InnerText = point2.X.ToString();
point2Node.AppendChild(xNode);
yNode = file.CreateElement("y");
yNode.InnerText = point2.Y.ToString();
point2Node.AppendChild(yNode);
zNode = file.CreateElement("z");
zNode.InnerText = point2.Z.ToString();
point2Node.AppendChild(zNode);
return(collisionBoxNode);
}
