private void SubdivideAllCurrentSectors()
{
List <CoastLineCreationSectorBoundary> currentCoastlinePropagationSectors = coastLinePropagationSectors.GetCurrentCoastLinePropagationSectors();
coastLinePropagationSectors.SwitchToNextPropagationList();
CoastLineCreationSectorBoundary previousSector = currentCoastlinePropagationSectors[0];
CoastLineCreationSectorBoundary currentSector = currentCoastlinePropagationSectors[0];
CoastLineCreationSectorBoundary nextSector = currentCoastlinePropagationSectors[0];
for (int i = 0; i < currentCoastlinePropagationSectors.Count; i++)
{
if (0 != i)
{
if (coastLinePropagationSectors.GetCurrentCoastLinePropagationSectors().Count > 0)
{
previousSector = coastLinePropagationSectors.GetCurrentCoastLinePropagationSectors()[coastLinePropagationSectors.GetCurrentCoastLinePropagationSectors().Count - 1];
}
else
{
previousSector = currentCoastlinePropagationSectors[i - 1];
}
}
currentSector = currentCoastlinePropagationSectors[i];
if (currentCoastlinePropagationSectors.Count - 1 != i)
{
nextSector = currentCoastlinePropagationSectors[i + 1];
}
else
{
nextSector = currentCoastlinePropagationSectors[0];
}
CoastLinePropagationEnterExitPoint currentSectorEntryPoint = DetermineEntryPointFromAdjacentSectors(previousSector, currentSector);
CoastLinePropagationEnterExitPoint currentSectorExitPoint = DetermineEntryPointFromAdjacentSectors(nextSector, currentSector);
if (0 == i && currentCoastlinePropagationSectors.Count > 1 && currentSectorEntryPoint == CoastLinePropagationEnterExitPoint.NONE)
{
currentSectorEntryPoint = DetermineEntryPointFromAdjacentSectors(currentCoastlinePropagationSectors[currentCoastlinePropagationSectors.Count - 1], currentSector);
}
if (currentSector.ToX - currentSector.FromX < 2)
{
GenerateCoastlineInTrivialCase(currentSector, currentSectorEntryPoint, currentSectorExitPoint);
}
else
{
GenerateCoastLineForFourSectors(currentSector, currentSectorEntryPoint, currentSectorExitPoint);
}
}
if (coastLinePropagationSectors.GetCurrentCoastLinePropagationSectors().Count != 0)
{
SubdivideAllCurrentSectors();
}
}
public override bool Equals(object other)
{
if (other is CoastLineCreationSectorBoundary)
{
CoastLineCreationSectorBoundary otherBoundary = (CoastLineCreationSectorBoundary)other;
return(FromX == otherBoundary.FromX &&
FromY == otherBoundary.FromY &&
ToX == otherBoundary.ToX &&
ToY == otherBoundary.ToY);
}
return(false);
}
public List <BlockPosition> GenerateCoastline(int islandEdgeLength)
{
edgeLengthOfIsland = islandEdgeLength;
coastLineMinHeight = randomNumberGenerator.GenerateIntegerBetweenAnd(96, 128);
if (edgeLengthOfIsland < 3)
{
GenerateCoastlineInTrivialCase(new CoastLineCreationSectorBoundary(0, 0, edgeLengthOfIsland - 1, 0, edgeLengthOfIsland - 1), CoastLinePropagationEnterExitPoint.NONE, CoastLinePropagationEnterExitPoint.NONE);
}
else
{
CoastLineCreationSectorBoundary boundary = new CoastLineCreationSectorBoundary(0, 0, edgeLengthOfIsland - 1, 0, edgeLengthOfIsland - 1);
coastLinePropagationSectors.PutSector(boundary);
SubdivideAllCurrentSectors();
}
return(coastLineHeightMap);
}
private bool NextSectorToMoveToIsLegit(int nextSectorNo)
{
CoastLineCreationSectorBoundary previousSector = coastLinePropagationSectors.GetCurrentCoastLinePropagationSectors()[coastLinePropagationSectors.GetCurrentCoastLinePropagationSectors().Count - 1];
short previousSectorNo = previousSector.SectorNo;
switch (previousSectorNo)
{
case TOP_LEFT_SECTOR_ID:
return(nextSectorNo == TOP_RIGHT_SECTOR_ID || nextSectorNo == BOTTOM_LEFT_SECTOR_ID);
case TOP_RIGHT_SECTOR_ID:
return(nextSectorNo == TOP_LEFT_SECTOR_ID || nextSectorNo == BOTTOM_RIGHT_SECTOR_ID);
case BOTTOM_LEFT_SECTOR_ID:
return(nextSectorNo == TOP_LEFT_SECTOR_ID || nextSectorNo == BOTTOM_RIGHT_SECTOR_ID);
case BOTTOM_RIGHT_SECTOR_ID:
return(nextSectorNo == TOP_RIGHT_SECTOR_ID || nextSectorNo == BOTTOM_LEFT_SECTOR_ID);
}
return(false);
}
private CoastLineCreationSectorBoundary GetSectorBoundaryFromSectorNumber(CoastLineCreationSectorBoundary parentSector, int sectorNumber)
{
CoastLineCreationSectorBoundary sector0 = new CoastLineCreationSectorBoundary(TOP_LEFT_SECTOR_ID, parentSector.FromX, parentSector.FromX + (parentSector.ToX - parentSector.FromX) / 2, parentSector.FromY, parentSector.FromY + (parentSector.ToY - parentSector.FromY) / 2);
CoastLineCreationSectorBoundary sector1 = new CoastLineCreationSectorBoundary(TOP_RIGHT_SECTOR_ID, parentSector.FromX + (parentSector.ToX - parentSector.FromX) / 2 + 1, parentSector.ToX, parentSector.FromY, parentSector.FromY + (parentSector.ToY - parentSector.FromY) / 2);
CoastLineCreationSectorBoundary sector2 = new CoastLineCreationSectorBoundary(BOTTOM_LEFT_SECTOR_ID, parentSector.FromX, parentSector.FromX + (parentSector.ToX - parentSector.FromX) / 2, parentSector.FromY + (parentSector.ToY - parentSector.FromY) / 2 + 1, parentSector.ToY);
CoastLineCreationSectorBoundary sector3 = new CoastLineCreationSectorBoundary(BOTTOM_RIGHT_SECTOR_ID, parentSector.FromX + (parentSector.ToX - parentSector.FromX) / 2 + 1, parentSector.ToX, parentSector.FromY + (parentSector.ToY - parentSector.FromY) / 2 + 1, parentSector.ToY);
switch (sectorNumber)
{
case TOP_LEFT_SECTOR_ID:
return(sector0);
case TOP_RIGHT_SECTOR_ID:
return(sector1);
case BOTTOM_LEFT_SECTOR_ID:
return(sector2);
case BOTTOM_RIGHT_SECTOR_ID:
return(sector3);
}
return(sector3);
}
public bool IsSmallerThan(CoastLineCreationSectorBoundary other)
{
return(ToX - FromX < other.ToX - other.FromX &&
ToY - FromY < other.ToY - other.FromY);
}
private void PlaceBlockBasedOnNumberAndCurrentSector(int sectorToPlaceBlockAt, CoastLineCreationSectorBoundary coastLineGenerationChunkBoundary)
{
BlockPosition placementPosition;
switch (sectorToPlaceBlockAt)
{
case TOP_LEFT_SECTOR_ID:
placementPosition = new BlockPosition(coastLineGenerationChunkBoundary.FromX, coastLineMinHeight, coastLineGenerationChunkBoundary.FromY);
PlaceRockBlockAtIfItIsNotAir(placementPosition);
break;
case TOP_RIGHT_SECTOR_ID:
placementPosition = new BlockPosition(coastLineGenerationChunkBoundary.FromX + 1, coastLineMinHeight, coastLineGenerationChunkBoundary.FromY);
PlaceRockBlockAtIfItIsNotAir(placementPosition);
break;
case BOTTOM_LEFT_SECTOR_ID:
placementPosition = new BlockPosition(coastLineGenerationChunkBoundary.FromX, coastLineMinHeight, coastLineGenerationChunkBoundary.FromY + 1);
PlaceRockBlockAtIfItIsNotAir(placementPosition);
break;
case BOTTOM_RIGHT_SECTOR_ID:
placementPosition = new BlockPosition(coastLineGenerationChunkBoundary.FromX + 1, coastLineMinHeight, coastLineGenerationChunkBoundary.FromY + 1);
PlaceRockBlockAtIfItIsNotAir(placementPosition);
break;
}
}
private void GenerateCoastlineInTrivialCase(CoastLineCreationSectorBoundary coastLineGenerationChunkBoundary, CoastLinePropagationEnterExitPoint enterPoint, CoastLinePropagationEnterExitPoint exitPoint)
{
if (0 == coastLineGenerationChunkBoundary.ToX - coastLineGenerationChunkBoundary.FromX)
{
int shouldSetBlock = randomNumberGenerator.GenerateRandomPositiveInteger(1);
if (1 == shouldSetBlock)
{
coastLineHeightMap.Add(new BlockPosition(coastLineGenerationChunkBoundary.FromX, coastLineMinHeight, coastLineGenerationChunkBoundary.FromX));
}
}
else if (1 == coastLineGenerationChunkBoundary.ToX - coastLineGenerationChunkBoundary.FromX)
{
if (enterPoint == CoastLinePropagationEnterExitPoint.NONE && exitPoint == CoastLinePropagationEnterExitPoint.NONE)
{
int amountOfSubGenerationSteps = randomNumberGenerator.GenerateRandomPositiveInteger(3);
int i = 0;
while (i < amountOfSubGenerationSteps)
{
int sectorToPlaceBlockAt = randomNumberGenerator.GenerateRandomPositiveInteger(3);
BlockPosition placementPosition;
switch (sectorToPlaceBlockAt)
{
case TOP_LEFT_SECTOR_ID:
placementPosition = new BlockPosition(coastLineGenerationChunkBoundary.FromX, coastLineMinHeight, coastLineGenerationChunkBoundary.FromY);
if (!coastLineHeightMap.Contains(placementPosition))
{
coastLineHeightMap.Add(placementPosition);
i++;
}
break;
case TOP_RIGHT_SECTOR_ID:
placementPosition = new BlockPosition(coastLineGenerationChunkBoundary.FromX + 1, coastLineMinHeight, coastLineGenerationChunkBoundary.FromY);
if (!coastLineHeightMap.Contains(placementPosition))
{
coastLineHeightMap.Add(placementPosition);
i++;
}
break;
case BOTTOM_LEFT_SECTOR_ID:
placementPosition = new BlockPosition(coastLineGenerationChunkBoundary.FromX, coastLineMinHeight, coastLineGenerationChunkBoundary.FromY + 1);
if (!coastLineHeightMap.Contains(placementPosition))
{
coastLineHeightMap.Add(placementPosition);
i++;
}
break;
case BOTTOM_RIGHT_SECTOR_ID:
placementPosition = new BlockPosition(coastLineGenerationChunkBoundary.FromX + 1, coastLineMinHeight, coastLineGenerationChunkBoundary.FromY + 1);
if (!coastLineHeightMap.Contains(placementPosition))
{
coastLineHeightMap.Add(placementPosition);
i++;
}
break;
}
}
}
else
{
int amountOfBlocksPlaced = 0;
while (amountOfBlocksPlaced < 2)
{
if (0 == amountOfBlocksPlaced)
{
if (enterPoint == CoastLinePropagationEnterExitPoint.NONE)
{
int nextSectorNo = randomNumberGenerator.GenerateRandomPositiveInteger(3);
PlaceBlockBasedOnNumberAndCurrentSector(nextSectorNo, coastLineGenerationChunkBoundary);
amountOfBlocksPlaced++;
}
else
{
int nextSectorNo = randomNumberGenerator.GenerateRandomPositiveInteger(3);
if (SectorIsLegitAsEntrySector(nextSectorNo, enterPoint))
{
PlaceBlockBasedOnNumberAndCurrentSector(nextSectorNo, coastLineGenerationChunkBoundary);
amountOfBlocksPlaced++;
}
}
}
else
{
int nextSectorNo = randomNumberGenerator.GenerateRandomPositiveInteger(3);
if (SectorIsLegitAsExitSector(nextSectorNo, exitPoint))
{
PlaceBlockBasedOnNumberAndCurrentSector(nextSectorNo, coastLineGenerationChunkBoundary);
amountOfBlocksPlaced++;
}
}
}
}
}
}
private CoastLinePropagationEnterExitPoint DetermineEntryPointFromAdjacentSectors(CoastLineCreationSectorBoundary previousSector, CoastLineCreationSectorBoundary nextSector)
{
if (previousSector.IsSmallerThan(nextSector))
{
if (previousSector.FromX < nextSector.FromX)
{
if (previousSector.FromY < nextSector.FromY)
{
return(CoastLinePropagationEnterExitPoint.TOP_LEFT);
}
else if (previousSector.FromY == nextSector.FromY)
{
return(CoastLinePropagationEnterExitPoint.TOP_LEFT_LEFT);
}
else if (previousSector.FromY > nextSector.FromY && previousSector.FromY < nextSector.ToY)
{
return(CoastLinePropagationEnterExitPoint.BOTTOM_LEFT_LEFT);
}
return(CoastLinePropagationEnterExitPoint.BOTTOM_LEFT);
}
else if (previousSector.FromX == nextSector.FromX)
{
if (previousSector.FromY < nextSector.FromY)
{
return(CoastLinePropagationEnterExitPoint.TOP_LEFT_UP);
}
return(CoastLinePropagationEnterExitPoint.BOTTOM_LEFT_DOWN);
}
else if (previousSector.FromX > nextSector.FromX && previousSector.FromX < nextSector.ToX)
{
if (previousSector.FromY < nextSector.FromY)
{
return(CoastLinePropagationEnterExitPoint.TOP_RIGHT_UP);
}
return(CoastLinePropagationEnterExitPoint.BOTTOM_RIGHT_DOWN);
}
else
{
if (previousSector.FromY < nextSector.FromY)
{
return(CoastLinePropagationEnterExitPoint.TOP_RIGHT);
}
else if (previousSector.FromY == nextSector.FromY)
{
return(CoastLinePropagationEnterExitPoint.TOP_RIGHT_RIGHT);
}
else if (previousSector.FromY > nextSector.FromY && previousSector.FromY < nextSector.ToY)
{
return(CoastLinePropagationEnterExitPoint.BOTTOM_RIGHT_RIGHT);
}
return(CoastLinePropagationEnterExitPoint.BOTTOM_RIGHT);
}
}
else
{
if (previousSector.FromX < nextSector.FromX)
{
if (previousSector.FromY < nextSector.FromY)
{
return(CoastLinePropagationEnterExitPoint.TOP_LEFT);
}
else if (previousSector.FromY == nextSector.FromY)
{
return(CoastLinePropagationEnterExitPoint.LEFT);
}
return(CoastLinePropagationEnterExitPoint.BOTTOM_LEFT);
}
else if (previousSector.FromX == nextSector.FromX)
{
if (previousSector.FromY < nextSector.FromY)
{
return(CoastLinePropagationEnterExitPoint.TOP);
}
else if (previousSector.FromY == nextSector.FromY)
{
return(CoastLinePropagationEnterExitPoint.NONE);
}
return(CoastLinePropagationEnterExitPoint.BOTTOM);
}
else if (previousSector.FromX > nextSector.FromX)
{
if (previousSector.FromY < nextSector.FromY)
{
return(CoastLinePropagationEnterExitPoint.TOP_RIGHT);
}
else if (previousSector.FromY == nextSector.FromY)
{
return(CoastLinePropagationEnterExitPoint.RIGHT);
}
return(CoastLinePropagationEnterExitPoint.BOTTOM_RIGHT);
}
}
return(CoastLinePropagationEnterExitPoint.NONE);
}
private void GenerateCoastLineForFourSectors(CoastLineCreationSectorBoundary parentSector, CoastLinePropagationEnterExitPoint entryPoint, CoastLinePropagationEnterExitPoint exitPoint)
{
if (parentSector.ToX - parentSector.FromX < 2)
{
GenerateCoastlineInTrivialCase(parentSector, entryPoint, exitPoint);
}
else if (entryPoint == CoastLinePropagationEnterExitPoint.NONE && exitPoint == CoastLinePropagationEnterExitPoint.NONE)
{
while (coastLinePropagationSectors.GetCurrentCoastLinePropagationSectors().Count < 4)
{
int nextSectorNo = randomNumberGenerator.GenerateRandomPositiveInteger(3);
if (coastLinePropagationSectors.GetCurrentCoastLinePropagationSectors().Count > 0)
{
bool nextSectorIsLegit = NextSectorToMoveToIsLegit(nextSectorNo);
if (!nextSectorIsLegit)
{
continue;
}
}
CoastLineCreationSectorBoundary nextSectorToRunTo = GetSectorBoundaryFromSectorNumber(parentSector, nextSectorNo);
if (!coastLinePropagationSectors.GetCurrentCoastLinePropagationSectors().Contains(nextSectorToRunTo))
{
coastLinePropagationSectors.PutSector(nextSectorToRunTo);
}
}
}
else if (entryPoint != CoastLinePropagationEnterExitPoint.NONE)
{
bool allSectorsAreFilled = false;
int amountOfAddedSectors = 0;
while (!allSectorsAreFilled)
{
int nextSectorNo = randomNumberGenerator.GenerateRandomPositiveInteger(3);
if (0 == amountOfAddedSectors)
{
if (SectorIsLegitAsEntrySector(nextSectorNo, entryPoint))
{
CoastLineCreationSectorBoundary nextSectorToRunTo = GetSectorBoundaryFromSectorNumber(parentSector, nextSectorNo);
coastLinePropagationSectors.PutSector(nextSectorToRunTo);
amountOfAddedSectors++;
}
}
else if (4 == amountOfAddedSectors)
{
allSectorsAreFilled = true;
}
else
{
if (exitPoint != CoastLinePropagationEnterExitPoint.NONE)
{
if (NextSectorToMoveToIsLegit(nextSectorNo))
{
CoastLineCreationSectorBoundary nextSector = GetSectorBoundaryFromSectorNumber(parentSector, nextSectorNo);
if (!coastLinePropagationSectors.ContainsSectorInCurrents(nextSector))
{
coastLinePropagationSectors.PutSector(nextSector);
amountOfAddedSectors++;
}
}
if (SectorIsLegitAsExitSector(coastLinePropagationSectors.GetCurrentCoastLinePropagationSectors()[coastLinePropagationSectors.GetCurrentCoastLinePropagationSectors().Count - 1].SectorNo, exitPoint))
{
allSectorsAreFilled = true;
}
}
}
}
}
}