/**
* Check if the number of NPC's in an area are 2 or less.
* @param NPC
* @return
*/
private Boolean lessThanTwoCheck(NPCObject[] NPC)
{
// NPCs are zero
if (NPC.Length == 0)
{
return(true);
}
// create first linked list node.
head = new DblLinkedList(NPC[0]);
prev = head;
if (NPC.Length == 1)
{
return(true);
}
// Else prepare the second linked list.
DblLinkedList DLL_Two = new DblLinkedList(NPC[1]);
head.next = DLL_Two;
DLL_Two.prev = head;
curr = DLL_Two;
if (NPC.Length == 2)
{
return(true);
}
return(false);
}
public void InsertBeforeTailOfEmptyList_ShouldThrowInvalidOperationException()
{
var list = new DblLinkedList <string>();
list.Invoking(l => l.InsertBefore(l.Tail, DblLinkedList.CreateNode("1")))
.ShouldThrow <InvalidOperationException>();
}
public void InsertAfterNull_ShouldThrowArgumentException()
{
var list = new DblLinkedList <string>();
list.Invoking(l => l.InsertAfter(null, DblLinkedList.CreateNode("1")))
.ShouldThrow <ArgumentNullException>();
}
public void RemoveNull_ShouldThrowArgumentException()
{
var list = new DblLinkedList <string>();
list.Invoking(l => l.Remove(null))
.ShouldThrow <ArgumentNullException>();
}
public void InsertAfterHeadOfEmptyList_ShouldThrowInvalidOperationException()
{
var list = new DblLinkedList <string>();
list.Invoking(l => l.InsertAfter(l.Head, DblLinkedList.CreateNode("1")))
.ShouldThrow <InvalidOperationException>();
}
public void InsertBeforeTailNull_ShouldThrowArgumentException()
{
var list = new DblLinkedList <string>();
list.Invoking(l => l.InsertBefore(l.Tail, null))
.ShouldThrow <ArgumentNullException>();
}
public void InsertAfterHeadNull_ShouldThrowArgumentException()
{
var list = new DblLinkedList <string>();
list.Invoking(l => l.InsertAfter(l.Head, null))
.ShouldThrow <ArgumentNullException>();
}
public void ListWithOneItem_ShouldNotBeEmpty()
{
var list = new DblLinkedList <int>();
var node = DblLinkedList.CreateNode(1);
list.InsertHead(node);
list.IsEmpty().Should().BeFalse();
}
public void InsertedToTailOfEmptyListNode_ShouldBeHeadOfList()
{
var list = new DblLinkedList <int>();
var node = DblLinkedList.CreateNode(1);
list.InsertTail(node);
list.Head.Should().Be(node);
}
public void InsertedToHeadTwoNodes_ShouldBeInListInRightOrder()
{
var list = new DblLinkedList <int>();
list.InsertHead(DblLinkedList.CreateNode(1));
list.InsertHead(DblLinkedList.CreateNode(2));
list.Head.Value.Should().Be(2);
list.Head.Next.Value.Should().Be(1);
}
public void InsertedToTailTwoNodes_ShouldBeInListInRightOrder()
{
var list = new DblLinkedList <int>();
list.InsertTail(DblLinkedList.CreateNode(1));
list.InsertTail(DblLinkedList.CreateNode(2));
list.Tail.Value.Should().Be(2);
list.Tail.Prev.Value.Should().Be(1);
}
public void ListAfterInsertingAndRemovingNode_ShouldBeEmpty()
{
var list = new DblLinkedList <int>();
var node = DblLinkedList.CreateNode(1);
list.InsertTail(node);
list.Remove(node);
list.IsEmpty().Should().BeTrue();
}
public void IterativeInsertAfterTail_ShouldProduceCorrectList(IList <int> input)
{
var list = new DblLinkedList <int>();
foreach (var i in input)
{
list.InsertAfter(list.Tail, DblLinkedList.CreateNode(i));
}
VerifyList(list, input);
}
public void IterativeInsertBeforeHead_ShouldProduceCorrectList(IList <int> input)
{
var list = new DblLinkedList <int>();
foreach (var i in input.Reverse())
{
list.InsertBefore(list.Head, DblLinkedList.CreateNode(i));
}
VerifyList(list, input);
}
public void InsertedAfterTailNode_ShouldBecomeTheTailOfList()
{
var list = new DblLinkedList <int>();
list.InsertTail(DblLinkedList.CreateNode(1));
var newNode = DblLinkedList.CreateNode(3);
list.InsertAfter(list.Tail, newNode);
list.Tail.Value.Should().Be(newNode.Value);
}
public void InsertedBeforeHeadNode_ShouldBecomeTheHeadOfList()
{
var list = new DblLinkedList <int>();
list.InsertHead(DblLinkedList.CreateNode(1));
var newNode = DblLinkedList.CreateNode(3);
list.InsertBefore(list.Head, newNode);
list.Head.Value.Should().Be(newNode.Value);
}
public void InsertedAfterNode_ShouldBeInsertedInsertedInRightPlace()
{
var list = new DblLinkedList <int>();
var node1 = DblLinkedList.CreateNode(1);
list.InsertHead(node1);
var newNode = DblLinkedList.CreateNode(2);
list.InsertAfter(node1, newNode);
list.Head.Next.Value.Should().Be(newNode.Value);
}
public void AfterRemovingHeadNode_HeadShouldBeChanged()
{
var list = new DblLinkedList <int>();
var node1 = DblLinkedList.CreateNode(1);
var node2 = DblLinkedList.CreateNode(2);
list.InsertHead(node1);
list.InsertHead(node2);
list.Remove(node2);
list.Head.Value.Should().Be(node1.Value);
}
public void IterativeInsertBefore_ShouldProduceCorrectList()
{
var input = new string[] { "1", "2", "3" };
var list = new DblLinkedList <string>();
var currentNode = list.Head;
foreach (var i in input.Reverse())
{
currentNode = list.InsertBefore(currentNode, DblLinkedList.CreateNode(i));
}
VerifyList(list, input);
}
private void VerifyListNode <T>(DblLinkedList <T> .Node node, IList <T> expectedList)
{
if (!expectedList.Any())
{
node.IsNull.Should().BeTrue();
return;
}
node.Value.Should().Be(expectedList.First());
node.Prev.Next.Should().Be(node);
node.Next.Prev.Should().Be(node);
VerifyListNode(node.Next, expectedList.Skip(1).ToList());
}
private void VerifyList <T>(DblLinkedList <T> list, IList <T> expectedList)
{
if (!expectedList.Any())
{
list.Head.IsNull.Should().BeTrue();
list.Tail.IsNull.Should().BeTrue();
list.IsEmpty().Should().BeTrue();
return;
}
list.Head.IsNull.Should().BeFalse();
list.Tail.IsNull.Should().BeFalse();
list.Head.Value.Should().Be(expectedList.First());
list.Tail.Value.Should().Be(expectedList.Last());
VerifyListNode(list.Head, expectedList);
}
/**
* Same as above but swapped the prev and next X and Y values so the slope intercept formula still works.
* @param NPC
* @param prev
* @param currCheck
* @param trav
* @return
*/
public double hullCheckBottom(NPCObject[] NPC, DblLinkedList prev, DblLinkedList currCheck, int trav)
{
double prevX = NPC[trav].PV.x;
double prevY = NPC[trav].PV.y;
double nextX = prev.NPC.PV.x;
double nextY = prev.NPC.PV.y;
double thisX = currCheck.NPC.PV.x;
// (3, 2) and (6, 3) // y = mx + b
double slope = (nextY - prevY) / (nextX - prevX); // m
double yInt = prevY - (slope * prevX); // b
// If this is lower than current point, the current point is no longer
// a part of the hull.
return(slope * thisX + yInt);
}
public static void ConvexHullTest()
{
Console.WriteLine("Creating Convex Hull");
JarvisMarch JMA = new JarvisMarch(5);
MergeSort SA = new MergeSort();
NPCObject[] NPCO = SA.sort(FivePointSeed.getGameObjectSeedDataJarvis(), 0, 4);
DblLinkedList DLL = JMA.getConvexHull(NPCO);
while (DLL != null)
{
Console.Write(DLL.NPC.PV.x);
Console.WriteLine(" " + DLL.NPC.PV.y);
DLL = DLL.next;
}
//NPCO[0].PV.x = pv[0].x;
//NPCO[0].PV.y = pv[0].y;
//DblLinkedList DLLHead = new DblLinkedList(NPCO[0]);
//NPCO[1].PV.x = pv[1].x;
//NPCO[1].PV.y = pv[1].y;
//DblLinkedList DLL = new DblLinkedList(NPCO[1]);
//DLLHead.next = DLL;
//DLL.prev = DLLHead;
//for (int i = 2; i < 5; i++)
//{
// NPCO[i].PV.x = pv[i].x;
// NPCO[i].PV.y = pv[i].y;
// DblLinkedList DL = new DblLinkedList(NPCO[i]);
// DLL.next = DL;
// DL.prev = DLL;
// DLL = DL;
//}
}
public void DblLinkedList9()
{
Node node = new Node(1);
node.xVal = 1;
node.yVal = 2;
DblLinkedList dll = new DblLinkedList(node);
Node node2 = new Node(2);
node2.xVal = 3;
node2.yVal = 4;
DblLinkedList dll2 = new DblLinkedList(node2);
dll.setNext(dll2);
dll2.setPrev(dll);
Assert.Equal(1, dll.getNode().xVal);
Assert.Equal(3, dll2.getNode().xVal);
Assert.Equal(1, dll2.getPrev().getNode().xVal);
Assert.Equal(3, dll.getNext().getNode().xVal);
}
private void algoTop(NPCObject[] NPC)
{
// check if we need to perform a convex hull algorithm.
if (lessThanTwoCheck(NPC))
{
return;
}
// Go through all but the first and last index's
for (int trav = 2; trav < size; trav++)
{
// find out if the current point is part of the convex hull or not.
double hCheck = hullCheck(NPC, prev, curr, trav);
DblLinkedList DLL = new DblLinkedList(NPC[trav]);
/*
* Check if the convex Hull should be outside of the current node
*/
if (hCheck < curr.NPC.PV.y)
{
/*
* Check each previous node on the convex hull until up until we are sure no current
* node will be fully contained in the new convex hull.
*/
while (prev != head)
{
/*
* Check each new convex hull compared to the previous node.
*/
double newHullCheck = hullCheck(NPC, prev.prev, prev, trav);
if (newHullCheck < prev.NPC.PV.y)
{
prev = prev.prev;
prev.next = DLL;
}
/*
* once we verify that we've found a previous convex hull node that won't change from the
* current new node, we quit.
*/
else
{
break;
}
}
/*
* This handles the same situation as directly above but takes care not to go past the
* head.
*/
if (prev == head)
{
double newHullCheck = hullCheck(NPC, prev, prev.next, trav);
if (newHullCheck < prev.NPC.PV.y)
{
prev.next = DLL;
}
}
/*
* update the connection between the new next convex hull node and the last verified node
* on the convex hull.
*/
DLL.prev = prev;
prev.next = DLL;
}
/*
* If the Current Node is Outside the convex hull Then it becomes a part of the new
* convex hull
*/
else
{
curr.next = DLL;
DLL.prev = curr;
prev = curr;
}
/*
* update the current node along the convex hull.
*/
curr = DLL;
// printCurrList();
}
topEnd = curr;
algoBottom(NPC);
}
public void NewlyCreatedList_ShouldBeEmpty()
{
var list = new DblLinkedList <int>();
list.IsEmpty().Should().BeTrue();
}