public MapGenerator( [NotNull] MapGeneratorArgs generatorArgs ) {
if( generatorArgs == null ) throw new ArgumentNullException( "generatorArgs" );
args = generatorArgs;
args.Validate();
if( !args.CustomWaterLevel ) {
args.WaterLevel = (args.MapHeight - 1) / 2;
}
rand = new Random( args.Seed );
noise = new Noise( args.Seed, NoiseInterpolationMode.Bicubic );
ApplyTheme( args.Theme );
EstimateComplexity();
}
Map GenerateMap()
{
Map map = new Map(null, genParams.MapWidth, genParams.MapLength, genParams.MapHeight, true);
theme = genParams.Theme;
// scale features vertically based on map height
double verticalScale = (genParams.MapHeight / 96.0) / 2 + 0.5;
maxHeightScaled = (int)Math.Round(genParams.MaxHeight * verticalScale);
maxDepthScaled = (int)Math.Round(genParams.MaxDepth * verticalScale);
snowAltitudeScaled = (int)Math.Round(genParams.SnowAltitude * verticalScale);
// Match water coverage
float desiredWaterLevel = .5f;
if (genParams.MatchWaterCoverage)
{
ReportRelativeProgress(2, "Heightmap Processing: Matching water coverage");
// find a number between 0 and 1 ("desiredWaterLevel") for the heightmap such that
// the fraction of heightmap coordinates ("blocks") that are below this threshold ("underwater")
// match the specified WaterCoverage
desiredWaterLevel = Noise.FindThreshold(heightmap, genParams.WaterCoverage);
}
// Calculate above/below water multipliers
float aboveWaterMultiplier = 0;
if (desiredWaterLevel < 1)
{
aboveWaterMultiplier = (maxHeightScaled / (1 - desiredWaterLevel));
}
// Apply power functions to above/below water parts of the heightmap
if (Math.Abs(genParams.BelowFuncExponent - 1) > float.Epsilon ||
Math.Abs(genParams.AboveFuncExponent - 1) > float.Epsilon)
{
ReportRelativeProgress(5, "Heightmap Processing: Adjusting slope");
for (int x = heightmap.GetLength(0) - 1; x >= 0; x--)
{
for (int y = heightmap.GetLength(1) - 1; y >= 0; y--)
{
if (heightmap[x, y] < desiredWaterLevel)
{
float normalizedDepth = 1 - heightmap[x, y] / desiredWaterLevel;
heightmap[x, y] = desiredWaterLevel -
(float)Math.Pow(normalizedDepth, genParams.BelowFuncExponent) *
desiredWaterLevel;
}
else
{
float normalizedHeight = (heightmap[x, y] - desiredWaterLevel) / (1 - desiredWaterLevel);
heightmap[x, y] = desiredWaterLevel +
(float)Math.Pow(normalizedHeight, genParams.AboveFuncExponent) *
(1 - desiredWaterLevel);
}
}
}
}
// Calculate the slope
if (genParams.CliffSmoothing)
{
ReportRelativeProgress(2, "Heightmap Processing: Smoothing");
slopemap = Noise.CalculateSlope(Noise.GaussianBlur5X5(heightmap));
}
else
{
slopemap = Noise.CalculateSlope(heightmap);
}
// Randomize max height/depth
float[,] altmap = null;
if (genParams.MaxHeightVariation != 0 || genParams.MaxDepthVariation != 0)
{
ReportRelativeProgress(5, "Heightmap Processing: Randomizing");
altmap = new float[map.Width, map.Length];
int blendmapDetailSize = (int)Math.Log(Math.Max(genParams.MapWidth, genParams.MapLength), 2) - 2;
new Noise(rand.Next(), NoiseInterpolationMode.Cosine)
.PerlinNoise(altmap, Math.Min(blendmapDetailSize, 3), blendmapDetailSize,
0.5f, 0, 0);
Noise.Normalize(altmap, -1, 1);
}
int snowStartThreshold = snowAltitudeScaled - genParams.SnowTransition;
int snowThreshold = snowAltitudeScaled;
ReportRelativeProgress(10, "Filling");
if (theme.AirBlock != Block.Air)
{
map.Blocks.MemSet((byte)theme.AirBlock);
}
for (int x = heightmap.GetLength(0) - 1; x >= 0; x--)
{
for (int y = heightmap.GetLength(1) - 1; y >= 0; y--)
{
int level;
float slope;
if (heightmap[x, y] < desiredWaterLevel)
{
// for blocks below "sea level"
float depth = maxDepthScaled;
if (altmap != null)
{
depth += altmap[x, y] * genParams.MaxDepthVariation;
}
slope = slopemap[x, y] * depth;
level = genParams.WaterLevel - (int)Math.Round(Math.Pow(1 - heightmap[x, y] / desiredWaterLevel, genParams.BelowFuncExponent) * depth);
if (genParams.AddWater)
{
if (genParams.WaterLevel - level > 3)
{
map.SetBlock(x, y, genParams.WaterLevel, theme.DeepWaterSurfaceBlock);
}
else
{
map.SetBlock(x, y, genParams.WaterLevel, theme.WaterSurfaceBlock);
}
for (int i = genParams.WaterLevel; i > level; i--)
{
map.SetBlock(x, y, i, theme.WaterBlock);
}
for (int i = level; i >= 0; i--)
{
if (level - i < theme.SeaFloorThickness)
{
map.SetBlock(x, y, i, theme.SeaFloorBlock);
}
else
{
map.SetBlock(x, y, i, theme.BedrockBlock);
}
}
}
else
{
if (blendmap != null && blendmap[x, y] > .25 && blendmap[x, y] < .75)
{
map.SetBlock(x, y, level, theme.CliffBlock);
}
else
{
if (slope < genParams.CliffThreshold)
{
map.SetBlock(x, y, level, theme.GroundSurfaceBlock);
}
else
{
map.SetBlock(x, y, level, theme.CliffBlock);
}
}
for (int i = level - 1; i >= 0; i--)
{
if (level - i < theme.GroundThickness)
{
if (blendmap != null && blendmap[x, y] > CliffsideBlockThreshold && blendmap[x, y] < (1 - CliffsideBlockThreshold))
{
map.SetBlock(x, y, i, theme.CliffBlock);
}
else
{
if (slope < genParams.CliffThreshold)
{
map.SetBlock(x, y, i, theme.GroundBlock);
}
else
{
map.SetBlock(x, y, i, theme.CliffBlock);
}
}
}
else
{
map.SetBlock(x, y, i, theme.BedrockBlock);
}
}
}
}
else
{
// for blocks above "sea level"
float height;
if (altmap != null)
{
height = maxHeightScaled + altmap[x, y] * genParams.MaxHeightVariation;
}
else
{
height = maxHeightScaled;
}
slope = slopemap[x, y] * height;
if (height != 0)
{
level = genParams.WaterLevel +
(int)Math.Round(Math.Pow(heightmap[x, y] - desiredWaterLevel, genParams.AboveFuncExponent) *
aboveWaterMultiplier / maxHeightScaled * height);
}
else
{
level = genParams.WaterLevel;
}
bool snow = genParams.AddSnow &&
(level > snowThreshold ||
(level > snowStartThreshold && rand.NextDouble() < (level - snowStartThreshold) / (double)(snowThreshold - snowStartThreshold)));
if (blendmap != null && blendmap[x, y] > .25 && blendmap[x, y] < .75)
{
map.SetBlock(x, y, level, theme.CliffBlock);
}
else
{
if (slope < genParams.CliffThreshold)
{
map.SetBlock(x, y, level, (snow ? theme.SnowBlock : theme.GroundSurfaceBlock));
}
else
{
map.SetBlock(x, y, level, theme.CliffBlock);
}
}
for (int i = level - 1; i >= 0; i--)
{
if (level - i < theme.GroundThickness)
{
if (blendmap != null && blendmap[x, y] > CliffsideBlockThreshold && blendmap[x, y] < (1 - CliffsideBlockThreshold))
{
map.SetBlock(x, y, i, theme.CliffBlock);
}
else
{
if (slope < genParams.CliffThreshold)
{
if (snow)
{
map.SetBlock(x, y, i, theme.SnowBlock);
}
else
{
map.SetBlock(x, y, i, theme.GroundBlock);
}
}
else
{
map.SetBlock(x, y, i, theme.CliffBlock);
}
}
}
else
{
map.SetBlock(x, y, i, theme.BedrockBlock);
}
}
}
}
}
if (genParams.AddCaves || genParams.AddOre)
{
AddCaves(map);
}
if (genParams.AddBeaches)
{
ReportRelativeProgress(5, "Processing: Adding beaches");
AddBeaches(map);
}
if (genParams.AddTrees)
{
ReportRelativeProgress(5, "Processing: Planting trees");
if (genParams.AddGiantTrees)
{
Map outMap = new Map(null, map.Width, map.Length, map.Height, false)
{
Blocks = (byte[])map.Blocks.Clone()
};
var foresterArgs = new ForesterArgs {
Map = map,
Rand = rand,
TreeCount = (int)(map.Width * map.Length * 4 / (1024f * (genParams.TreeSpacingMax + genParams.TreeSpacingMin) / 2)),
Operation = Forester.ForesterOperation.Add,
PlantOn = theme.GroundSurfaceBlock
};
foresterArgs.BlockPlacing += (sender, e) => outMap.SetBlock(e.Coordinate, e.Block);
Forester.Generate(foresterArgs);
map = outMap;
}
GenerateTrees(map);
}
if (genParams.AddFloodBarrier)
{
MakeFloodBarrier(map);
}
return(map);
}
public Map GenerateMap()
{
Map map = new Map(null, args.MapWidth, args.MapLength, args.MapHeight, true);
// Match water coverage
float desiredWaterLevel = .5f;
if (args.MatchWaterCoverage)
{
ReportProgress(2, "Heightmap Processing: Matching water coverage");
desiredWaterLevel = Noise.FindThreshold(heightmap, args.WaterCoverage);
}
// Calculate above/below water multipliers
float aboveWaterMultiplier = 0;
if (desiredWaterLevel != 1)
{
aboveWaterMultiplier = (args.MaxHeight / (1 - desiredWaterLevel));
}
// Apply power functions to above/below water parts of the heightmap
if (args.BelowFuncExponent != 1 || args.AboveFuncExponent != 1)
{
ReportProgress(5, "Heightmap Processing: Adjusting slope");
for (int x = heightmap.GetLength(0) - 1; x >= 0; x--)
{
for (int y = heightmap.GetLength(1) - 1; y >= 0; y--)
{
if (heightmap[x, y] < desiredWaterLevel)
{
float normalizedDepth = 1 - heightmap[x, y] / desiredWaterLevel;
heightmap[x, y] = desiredWaterLevel - (float)Math.Pow(normalizedDepth, args.BelowFuncExponent) * desiredWaterLevel;
}
else
{
float normalizedHeight = (heightmap[x, y] - desiredWaterLevel) / (1 - desiredWaterLevel);
heightmap[x, y] = desiredWaterLevel + (float)Math.Pow(normalizedHeight, args.AboveFuncExponent) * (1 - desiredWaterLevel);
}
}
}
}
// Calculate the slope
if (args.CliffSmoothing)
{
ReportProgress(2, "Heightmap Processing: Smoothing");
slopemap = Noise.CalculateSlope(Noise.GaussianBlur5X5(heightmap));
}
else
{
slopemap = Noise.CalculateSlope(heightmap);
}
float[,] altmap = null;
if (args.MaxHeightVariation != 0 || args.MaxDepthVariation != 0)
{
ReportProgress(5, "Heightmap Processing: Randomizing");
altmap = new float[map.Width, map.Length];
int blendmapDetailSize = (int)Math.Log(Math.Max(args.MapWidth, args.MapLength), 2) - 2;
new Noise(rand.Next(), NoiseInterpolationMode.Cosine).PerlinNoise(altmap, 3, blendmapDetailSize, 0.5f, 0, 0);
Noise.Normalize(altmap, -1, 1);
}
int snowStartThreshold = args.SnowAltitude - args.SnowTransition;
int snowThreshold = args.SnowAltitude;
ReportProgress(10, "Filling");
for (int x = heightmap.GetLength(0) - 1; x >= 0; x--)
{
for (int y = heightmap.GetLength(1) - 1; y >= 0; y--)
{
int level;
float slope;
if (heightmap[x, y] < desiredWaterLevel)
{
float depth = args.MaxDepth;
if (altmap != null)
{
depth += altmap[x, y] * args.MaxDepthVariation;
}
slope = slopemap[x, y] * depth;
level = args.WaterLevel - (int)Math.Round(Math.Pow(1 - heightmap[x, y] / desiredWaterLevel, args.BelowFuncExponent) * depth);
if (args.AddWater)
{
if (args.WaterLevel - level > 3)
{
map.SetBlock(x, y, args.WaterLevel, bDeepWaterSurface);
}
else
{
map.SetBlock(x, y, args.WaterLevel, bWaterSurface);
}
for (int i = args.WaterLevel; i > level; i--)
{
map.SetBlock(x, y, i, bWater);
}
for (int i = level; i >= 0; i--)
{
if (level - i < SeaFloorThickness)
{
map.SetBlock(x, y, i, bSeaFloor);
}
else
{
map.SetBlock(x, y, i, bBedrock);
}
}
}
else
{
if (blendmap != null && blendmap[x, y] > .25 && blendmap[x, y] < .75)
{
map.SetBlock(x, y, level, bCliff);
}
else
{
if (slope < args.CliffThreshold)
{
map.SetBlock(x, y, level, bGroundSurface);
}
else
{
map.SetBlock(x, y, level, bCliff);
}
}
for (int i = level - 1; i >= 0; i--)
{
if (level - i < groundThickness)
{
if (blendmap != null && blendmap[x, y] > CliffsideBlockThreshold && blendmap[x, y] < (1 - CliffsideBlockThreshold))
{
map.SetBlock(x, y, i, bCliff);
}
else
{
if (slope < args.CliffThreshold)
{
map.SetBlock(x, y, i, bGround);
}
else
{
map.SetBlock(x, y, i, bCliff);
}
}
}
else
{
map.SetBlock(x, y, i, bBedrock);
}
}
}
}
else
{
float height;
if (altmap != null)
{
height = args.MaxHeight + altmap[x, y] * args.MaxHeightVariation;
}
else
{
height = args.MaxHeight;
}
slope = slopemap[x, y] * height;
if (height != 0)
{
level = args.WaterLevel + (int)Math.Round(Math.Pow(heightmap[x, y] - desiredWaterLevel, args.AboveFuncExponent) * aboveWaterMultiplier / args.MaxHeight * height);
}
else
{
level = args.WaterLevel;
}
bool snow = args.AddSnow &&
(level > snowThreshold ||
(level > snowStartThreshold && rand.NextDouble() < (level - snowStartThreshold) / (double)(snowThreshold - snowStartThreshold)));
if (blendmap != null && blendmap[x, y] > .25 && blendmap[x, y] < .75)
{
map.SetBlock(x, y, level, bCliff);
}
else
{
if (slope < args.CliffThreshold)
{
map.SetBlock(x, y, level, (snow ? Block.White : bGroundSurface));
}
else
{
map.SetBlock(x, y, level, bCliff);
}
}
for (int i = level - 1; i >= 0; i--)
{
if (level - i < groundThickness)
{
if (blendmap != null && blendmap[x, y] > CliffsideBlockThreshold && blendmap[x, y] < (1 - CliffsideBlockThreshold))
{
map.SetBlock(x, y, i, bCliff);
}
else
{
if (slope < args.CliffThreshold)
{
if (snow)
{
map.SetBlock(x, y, i, Block.White);
}
else
{
map.SetBlock(x, y, i, bGround);
}
}
else
{
map.SetBlock(x, y, i, bCliff);
}
}
}
else
{
map.SetBlock(x, y, i, bBedrock);
}
}
}
}
}
if (args.AddCaves || args.AddOre)
{
AddCaves(map);
}
if (args.AddBeaches)
{
ReportProgress(5, "Processing: Adding beaches");
AddBeaches(map);
}
if (args.AddTrees)
{
ReportProgress(5, "Processing: Planting trees");
if (args.AddGiantTrees)
{
Map outMap = new Map(null, map.Width, map.Length, map.Height, false)
{
Blocks = (byte[])map.Blocks.Clone()
};
var foresterArgs = new ForesterArgs {
Map = map,
Rand = rand,
TreeCount = (int)(map.Width * map.Length * 4 / (1024f * (args.TreeSpacingMax + args.TreeSpacingMin) / 2)),
Operation = Forester.ForesterOperation.Add,
PlantOn = bGroundSurface
};
foresterArgs.BlockPlacing += (sender, e) => outMap.SetBlock(e.Coordinate, e.Block);
Forester.Generate(foresterArgs);
map = outMap;
}
GenerateTrees(map);
}
ReportProgress(0, "Generation complete");
map.Metadata["_Origin", "GeneratorName"] = "fCraft";
map.Metadata["_Origin", "GeneratorVersion"] = Updater.CurrentRelease.VersionString;
map.Metadata["_Origin", "GeneratorParams"] = args.Serialize().ToString(SaveOptions.DisableFormatting);
return(map);
}