private static Object2Side DetermineOverlappingCollisionSide(Rectangle collisionIntersection, Rectangle obj1Dest, Rectangle obj2Dest)
{
Object2Side side = Object2Side.NoCollision;
float percentOfObject1Height = (float)collisionIntersection.Height / ((float)obj1Dest.Height);
float percentOfObject1Width = (float)collisionIntersection.Width / ((float)obj1Dest.Width);
float percentOfObject2Height = (float)collisionIntersection.Height / ((float)obj2Dest.Height);
float percentOfObject2Width = (float)collisionIntersection.Width / ((float)obj2Dest.Width);
if (percentOfObject2Height > percentOfObject2Width || percentOfObject1Height > percentOfObject1Width)
{
if (collisionIntersection.X == obj2Dest.X)
{
side = Object2Side.Left;
}
else
{
side = Object2Side.Right;
}
}
else
{
if (collisionIntersection.Y == obj2Dest.Y)
{
side = Object2Side.Top;
}
else
{
side = Object2Side.Bottom;
}
}
return(side);
}
public void HandleMarioBlockCollisions()
{
for (int i = 0; i < blockCollisions.Count; i++)
{
IGameObject mario = blockCollisions[i].Item1;
IGameObject block1 = blockCollisions[i].Item2;
Rectangle marioDest = mario.Destination;
Rectangle block1Dest = block1.Destination;
if (i + 1 < blockCollisions.Count)
{
IGameObject block2 = blockCollisions[i + 1].Item2;
if (block2.Destination.X - block1Dest.X <= GameUtilities.BlockSize && block1Dest.Y == block2.Destination.Y &&
!DetermineToHandleFirstBlockCollision(marioDest, block1Dest, block2.Destination))
{
continue;
}
}
Object2Side side = DetermineCollisionSide(marioDest, block1Dest);
Tuple <ObjectType, ObjectType, Object2Side> collision = new Tuple <ObjectType, ObjectType, Object2Side>(mario.Type, block1.Type, side);
if (collisionDictionary.ContainsKey(collision))
{
collisionDictionary[collision].Execute(mario, block1);
}
}
blockCollisions.Clear();
}
private bool TestCollisionSide(string outputDetails, Object2Side actualCollision, Object2Side expectedCollision)
{
bool isCorrectSide = actualCollision == expectedCollision;
Console.WriteLine(outputDetails + isCorrectSide);
return(isCorrectSide);
}
public void DetectMarioBlockCollisions(IGameObject object1, IGameObject object2)
{
Object2Side side = DetermineCollisionSide(object1.Destination, object2.Destination);
if (side != Object2Side.NoCollision)
{
blockCollisions.Add(new Tuple <IGameObject, IGameObject>(object1, object2));
}
}
private static void ParseXMLObject(XmlNode xmlObject, ICollisionHandler collisionHandler)
{
ObjectType object1Type = (ObjectType)Enum.Parse(typeof(ObjectType), xmlObject["object1"].FirstChild.Value);
ObjectType object2Type = (ObjectType)Enum.Parse(typeof(ObjectType), xmlObject["object2"].FirstChild.Value);
Object2Side side = (Object2Side)Enum.Parse(typeof(Object2Side), xmlObject["side"].FirstChild.Value);
ICollisionCommand command = commandDictionary[xmlObject["command"].FirstChild.Value];
collisionHandler.RegisterCommand(new Tuple <ObjectType, ObjectType, Object2Side>(object1Type, object2Type, side), command);
}
public bool HandleCollision(IGameObject object1, IGameObject object2)
{
Object2Side side = DetermineCollisionSide(object1.Destination, object2.Destination);
if (side != Object2Side.NoCollision)
{
Tuple <ObjectType, ObjectType, Object2Side> collision = new Tuple <ObjectType, ObjectType, Object2Side>(object1.Type, object2.Type, side);
if (collisionDictionary.ContainsKey(collision))
{
collisionDictionary[collision].Execute(object1, object2);
}
}
return(side != Object2Side.NoCollision);
}
public static Object2Side DetermineCollisionSide(Rectangle obj1Dest, Rectangle obj2Dest)
{
Object2Side side = Object2Side.NoCollision;
Rectangle collisionIntersection = Rectangle.Intersect(obj1Dest, obj2Dest);
if (collisionIntersection.Width != 0 || collisionIntersection.Height != 0)
{
side = DetermineOverlappingCollisionSide(collisionIntersection, obj1Dest, obj2Dest);
}
else
{
side = DetermineBorderOrNoCollisionSide(obj1Dest, obj2Dest);
}
return(side);
}
private static Object2Side DetermineBorderOrNoCollisionSide(Rectangle obj1Dest, Rectangle obj2Dest)
{
Object2Side side = Object2Side.NoCollision;
if (obj1Dest.Y + obj1Dest.Height == obj2Dest.Y && HasHorizontalIntersection(obj1Dest, obj2Dest))
{
side = Object2Side.Top;
}
else if (obj1Dest.Y == obj2Dest.Y + obj2Dest.Height && HasHorizontalIntersection(obj1Dest, obj2Dest))
{
side = Object2Side.Bottom;
}
else if (obj1Dest.X + obj1Dest.Width == obj2Dest.X && HasVerticalIntersection(obj1Dest, obj2Dest))
{
side = Object2Side.Left;
}
else if (obj1Dest.X == obj2Dest.X + obj2Dest.Width && HasVerticalIntersection(obj1Dest, obj2Dest))
{
side = Object2Side.Right;
}
return(side);
}