internal void processBlockUpdates(IMapChunk mc, UpdateSnowLayerChunk updateChunk, IBulkBlockAccessor ba)
{
var setblocks = updateChunk.SetBlocks;
double lastSnowAccumUpdateTotalHours = updateChunk.LastSnowAccumUpdateTotalHours;
Vec2i tmpVec = new Vec2i();
foreach (var sval in setblocks)
{
Block newblock = sval.Value.Block;
float snowLevel = sval.Value.SnowLevel;
Block hereblock = ba.GetBlock(sval.Key);
tmpVec.Set(sval.Key.X, sval.Key.Z);
if (snowLevel > 0 && !mc.SnowAccum.ContainsKey(tmpVec))
{
continue; // Must have gotten removed since we last checked in our seperate thread
}
hereblock.PerformSnowLevelUpdate(ba, sval.Key, newblock, snowLevel);
}
mc.SetModdata("lastSnowAccumUpdateTotalHours", SerializerUtil.Serialize <double>(lastSnowAccumUpdateTotalHours));
mc.MarkDirty();
}
internal void processBlockUpdates(Vec2i coord, UpdateSnowLayerChunk updateChunk, IBulkBlockAccessor ba)
{
int chunkX = coord.X;
int chunkZ = coord.Y;
var setblocks = updateChunk.SetBlocks;
double lastSnowAccumUpdateTotalHours = updateChunk.LastSnowAccumUpdateTotalHours;
IMapChunk mc = sapi.WorldManager.GetMapChunk(chunkX, chunkZ);
if (mc == null)
{
return; // No longer loaded, we can just ditch it and re-do the thing again next time it gets loaded again
}
Vec2i tmpVec = new Vec2i();
foreach (var sval in setblocks)
{
Block newblock = sval.Value.Block;
float snowLevel = sval.Value.SnowLevel;
Block hereblock = ba.GetBlock(sval.Key);
tmpVec.Set(sval.Key.X, sval.Key.Z);
if (snowLevel > 0 && !mc.SnowAccum.ContainsKey(tmpVec))
{
continue; // Must have gotten removed since we last checked in our seperate thread
}
hereblock.PerformSnowLevelUpdate(ba, sval.Key, newblock, snowLevel);
}
mc.SetData("lastSnowAccumUpdateTotalHours", SerializerUtil.Serialize <double>(lastSnowAccumUpdateTotalHours));
mc.MarkDirty();
}
private void OnServerTick100ms(float dt)
{
accum += dt;
if (updateSnowLayerQueue.Count > 5 || (accum > 1 && updateSnowLayerQueue.Count > 0))
{
accum = 0;
int cnt = 0;
int max = 10;
UpdateSnowLayerChunk[] q = new UpdateSnowLayerChunk[max];
lock (updateSnowLayerQueueLock)
{
while (updateSnowLayerQueue.Count > 0)
{
q[cnt] = updateSnowLayerQueue.Dequeue();
cnt++;
if (cnt >= max)
{
break;
}
}
}
for (int i = 0; i < cnt; i++)
{
processBlockUpdates(q[i].Coords, q[i], ba);
}
ba.Commit();
}
}
private bool TryImmediateSnowUpdate(WeatherSimulationRegion simregion, IServerMapChunk mc, Vec2i chunkCoord, IWorldChunk[] chunksCol)
{
UpdateSnowLayerChunk dummy = new UpdateSnowLayerChunk()
{
Coords = chunkCoord
};
lock (updateSnowLayerQueue)
{
if (updateSnowLayerQueue.Contains(dummy))
{
return(false);
}
}
double nowTotalHours = ws.api.World.Calendar.TotalHours;
if (nowTotalHours - simregion.LastUpdateTotalHours > 1) // Lets wait until WeatherSimulationRegion is done updating
{
return(false);
}
UpdateSnowLayerChunk ch = GetSnowUpdate(simregion, mc, chunkCoord, chunksCol);
if (ch == null)
{
return(true); // The only path returning null, if we provided a full set of chunksCol, will be where newCount == 0
}
if (ch.SetBlocks.Count == 0)
{
return(true);
}
cuba.SetChunks(chunkCoord, chunksCol);
processBlockUpdates(mc, ch, cuba);
cuba.Commit();
lock (updateSnowLayerQueue)
{
updateSnowLayerQueue.Enqueue(dummy);
}
return(true);
}
private void OnServerTick100ms(float dt)
{
accum += dt;
if (updateSnowLayerQueue.Count > 5 || (accum > 1 && updateSnowLayerQueue.Count > 0))
{
accum = 0;
int cnt = 0;
int max = 10;
UpdateSnowLayerChunk[] q = new UpdateSnowLayerChunk[max];
lock (updateSnowLayerQueue)
{
while (updateSnowLayerQueue.Count > 0)
{
q[cnt] = updateSnowLayerQueue.Dequeue();
cnt++;
if (cnt >= max)
{
break;
}
}
}
for (int i = 0; i < cnt; i++)
{
IMapChunk mc = sapi.WorldManager.GetMapChunk(q[i].Coords.X, q[i].Coords.Y);
if (mc == null)
{
continue; // No longer loaded, we can just ditch it and re-do the thing again next time it gets loaded again
}
processBlockUpdates(mc, q[i], ba);
}
ba.Commit();
}
}
public UpdateSnowLayerChunk UpdateSnowLayer(SnowAccumSnapshot sumsnapshot, bool ignoreOldAccum, IServerMapChunk mc, Vec2i chunkPos, IWorldChunk[] chunksCol)
{
UpdateSnowLayerChunk updateChunk = new UpdateSnowLayerChunk();
var layers = ws.GeneralConfig.SnowLayerBlocks;
int chunkX = chunkPos.X;
int chunkZ = chunkPos.Y;
int regionX = (chunkX * chunksize) / regionsize;
int regionZ = (chunkZ * chunksize) / regionsize;
int regionBasePosX = regionX * regionsize;
int regionBasePosZ = regionZ * regionsize;
BlockPos pos = new BlockPos();
BlockPos placePos = new BlockPos();
float aboveSeaLevelHeight = sapi.World.BlockAccessor.MapSizeY - sapi.World.SeaLevel;
int[] posIndices = randomShuffles[sapi.World.Rand.Next(randomShuffles.Length)];
int prevChunkY = -99999;
IWorldChunk chunk = null;
int maxY = sapi.World.BlockAccessor.MapSizeY - 1;
for (int i = 0; i < posIndices.Length; i++)
{
int posIndex = posIndices[i];
int posY = GameMath.Clamp(mc.RainHeightMap[posIndex], 0, maxY);
int chunkY = posY / chunksize;
pos.Set(
chunkX * chunksize + posIndex % chunksize,
posY,
chunkZ * chunksize + posIndex / chunksize
);
if (prevChunkY != chunkY)
{
chunk = chunksCol?[chunkY] ?? sapi.WorldManager.GetChunk(chunkX, chunkY, chunkZ);
prevChunkY = chunkY;
}
if (chunk == null)
{
return(null);
}
float relx = (pos.X - regionBasePosX) / (float)regionsize;
float rely = GameMath.Clamp((pos.Y - sapi.World.SeaLevel) / aboveSeaLevelHeight, 0, 1);
float relz = (pos.Z - regionBasePosZ) / (float)regionsize;
// What needs to be done here?
// 1. Get desired snow cover level
// 2. Get current snow cover level
// - Get topmmost block. Is it snow?
// - Yes. Use it as reference pos and stuff
// - No. Must have no snow, increment pos.Y by 1
// 3. Compare and place block accordingly
// Idea: New method Block.UpdateSnowLayer() returns a new block instance if a block change is needed
// What needs to be done here, take 2
// We have 3 possible cases per-block
// 1: We find upside solid block. That means it has no snow on top
// 2: We find snow. That means below is a solid block.
// 3: We find some other block: That means we should try to find its snow-covered variant
// We have the following input data
// 1. Snow accumulation changes since the last update (usually an in-game hour or 2)
// 2. A precise snow level value from the position (if not set, load from snowlayer block type) (set to zero if the snowlayer is removed)
// 3. The current block at position, which is either
// - A snow layer: Override with internal level + accum changes
// - A solid block: Plase snow on top based on internal level + accum changes
// - A snow variantable block: Call the method with the new level
Block block = chunk.GetLocalLiquidOrBlockAtBlockPos(sapi.World, pos);
float hereAccum = 0;
Vec2i vec = new Vec2i(pos.X, pos.Z);
if (!ignoreOldAccum && !mc.SnowAccum.TryGetValue(vec, out hereAccum))
{
hereAccum = block.GetSnowLevel(pos);
}
float nowAccum = hereAccum + sumsnapshot.GetAvgSnowAccumByRegionCorner(relx, rely, relz);
mc.SnowAccum[vec] = GameMath.Clamp(nowAccum, -1, ws.GeneralConfig.SnowLayerBlocks.Count + 0.6f);
float hereShouldLevel = nowAccum - GameMath.MurmurHash3Mod(pos.X, 0, pos.Z, 150) / 300f;
float shouldIndexf = GameMath.Clamp(hereShouldLevel - 1.1f, -1, ws.GeneralConfig.SnowLayerBlocks.Count - 1);
int shouldIndex = shouldIndexf < 0 ? -1 : (int)shouldIndexf;
placePos.Set(pos.X, Math.Min(pos.Y + 1, sapi.World.BlockAccessor.MapSizeY - 1), pos.Z);
chunkY = placePos.Y / chunksize;
if (prevChunkY != chunkY)
{
chunk = chunksCol?[chunkY] ?? sapi.WorldManager.GetChunk(chunkX, chunkY, chunkZ);
prevChunkY = chunkY;
}
if (chunk == null)
{
return(null);
}
Block upBlock = chunk.GetLocalLiquidOrBlockAtBlockPos(sapi.World, placePos);
// Case 1: We have a block that can become snow covered (or more snow covered)
placePos.Set(pos);
Block newblock = block.GetSnowCoveredVariant(placePos, hereShouldLevel);
if (newblock != null)
{
if (block.Id != newblock.Id && upBlock.Replaceable > 6000)
{
updateChunk.SetBlocks[placePos.Copy()] = new BlockIdAndSnowLevel(newblock, hereShouldLevel);
}
}
// Case 2: We have a solid block that can have snow on top
else if (block.AllowSnowCoverage(sapi.World, placePos))
{
placePos.Set(pos.X, pos.Y + 1, pos.Z);
if (upBlock.Id != 0)
{
newblock = upBlock.GetSnowCoveredVariant(placePos, hereShouldLevel);
if (newblock != null && upBlock.Id != newblock.Id)
{
updateChunk.SetBlocks[placePos.Copy()] = new BlockIdAndSnowLevel(newblock, hereShouldLevel);
}
continue;
}
if (shouldIndex >= 0)
{
Block toPlaceBlock = layers.GetKeyAtIndex(shouldIndex);
updateChunk.SetBlocks[placePos.Copy()] = new BlockIdAndSnowLevel(toPlaceBlock, hereShouldLevel);
}
}
}
return(updateChunk);
}
private UpdateSnowLayerChunk GetSnowUpdate(WeatherSimulationRegion simregion, IServerMapChunk mc, Vec2i chunkPos, IWorldChunk[] chunksCol)
{
double lastSnowAccumUpdateTotalHours = mc.GetModdata <double>("lastSnowAccumUpdateTotalHours");
double startTotalHours = lastSnowAccumUpdateTotalHours;
int reso = WeatherSimulationRegion.snowAccumResolution;
SnowAccumSnapshot sumsnapshot = new SnowAccumSnapshot()
{
SnowAccumulationByRegionCorner = new FloatDataMap3D(reso, reso, reso)
};
float[] sumdata = sumsnapshot.SnowAccumulationByRegionCorner.Data;
// Can't grow bigger than one full snow block
float max = ws.GeneralConfig.SnowLayerBlocks.Count + 0.6f;
int len = simregion.SnowAccumSnapshots.Length;
int i = simregion.SnowAccumSnapshots.Start;
int newCount = 0;
lock (WeatherSimulationRegion.snowAccumSnapshotLock)
{
while (len-- > 0)
{
SnowAccumSnapshot hoursnapshot = simregion.SnowAccumSnapshots[i];
i = (i + 1) % simregion.SnowAccumSnapshots.Length;
if (hoursnapshot == null || lastSnowAccumUpdateTotalHours >= hoursnapshot.TotalHours)
{
continue;
}
float[] snowaccumdata = hoursnapshot.SnowAccumulationByRegionCorner.Data;
for (int j = 0; j < snowaccumdata.Length; j++)
{
sumdata[j] = GameMath.Clamp(sumdata[j] + snowaccumdata[j], -max, max);
}
lastSnowAccumUpdateTotalHours = Math.Max(lastSnowAccumUpdateTotalHours, hoursnapshot.TotalHours);
newCount++;
}
}
if (newCount == 0)
{
return(null);
}
bool ignoreOldAccum = false;
if (lastSnowAccumUpdateTotalHours - startTotalHours >= sapi.World.Calendar.DaysPerYear * sapi.World.Calendar.HoursPerDay)
{
ignoreOldAccum = true;
}
UpdateSnowLayerChunk ch = UpdateSnowLayer(sumsnapshot, ignoreOldAccum, mc, chunkPos, chunksCol);
if (ch != null)
{
ch.LastSnowAccumUpdateTotalHours = lastSnowAccumUpdateTotalHours;
ch.Coords = chunkPos.Copy();
}
return(ch);
}
public void UpdateSnowLayerOffThread(WeatherSimulationRegion simregion, IServerMapChunk mc, Vec2i chunkPos)
{
#region Tyrons brain cloud
// Trick 1: Each x/z coordinate gets a "snow accum" threshold by using a locational random (murmurhash3). Once that threshold is reached, spawn snow. If its doubled, spawn 2nd layer of snow. => Patchy "fade in" of snow \o/
// Trick 2: We store a region wide snow accum value for the ground level and the map ceiling level. We can now interpolate between those values for each Y-Coordinate \o/
// Trick 3: We loop through each x/z block in a separate thread, then hand over "place snow" tasks to the main thread
// Trick 4: Lets pre-gen 50 random shuffles for every x/z coordinate of a chunk. Loop through the region chunks, check which one is loaded and select one random shuffle from the list, then iterate over every x/z coord
// Trick 5: Snowed over blocks:
// - New VSMC util: "Automatically Try to add a snow cover to all horizontal faces"
// - New Block property: SnowCoverableShape.
// - Block.OnJsonTesselation adds snow adds cover shape to the sourceMesh!!
// Trick 6: Turn Cloud Patterns into a "dumb slave system". They are visual information only, so lets make them follow internal mechanisms.
// - Create a precipitation perlin noise generator. If the precipitation value goes above or below a certain value, we force the cloud pattern system to adapt to a fitting pattern
// => We gain easy to probe, deterministic precipitation values!!
// => We gain the ability to do unloaded chunk snow accumulation and unloaded chunk farmland rain-wetness accum
// Trick 6 v2.0:
// Rain clouds are simply overlaid onto the normal clouds.
// Questions:
// - Q1: When should it hail now?
// - Q2: How is particle size determined?
// - Q3: When should there be thunder?
// - Q4: How to control the precipitation by command?
// A1/A3: What if we read the slope of precipitation change. If there is a drastic increase of rain fall launch a
// a. wind + thunder event
// b. thunder event
// c. rarely a hail event
// d. extra rarely thunder + hail event
// A2: Particle size is determiend by precipitation intensity
// Trick 7 v2.0
// - Hail and Thunder are also triggered by a perlin noise generator. That way I don't need to care about event range.
// A4: /weather setprecip [auto or 0..1]
// - Q5: How do we overlay rain clouds onto the normal clouds?
// Q5a: Will they be hardcoded? Or configurable?
// Q5b: How does the overlay work? Lerp?
// Q5c: Rain cloud intensity should relate to precip level.
// How? Lerp from zero to max rain clouds? Multiple cloud configs and lerp between them?
// - A5a: Configurable
// A5b: Lerp.
// A5c: Single max rain cloud config seems sufficient
// TODO:
// 1. Rain cloud overlay
// 2. Snow accum
// 3. Hail, Thunder perlin noise
// 4. Done?
// Idea 8:
// - F**K the region based weather sim.
// - Generate clouds patterns like you generate terrain from landforms
// - Which is grid based indices, neatly abstracted with LerpedIndex2DMap and nicely shaped with domain warping
// - Give it enough padding to ensure domain warping does not go out of bounds
// - Every 2-3 minutes regenerate this map in a seperate thread, cloud renderer lerps between old and new map.
// - Since the basic indices input is grid based, we can cycle those individually through time
// for a future version
// Hm. Maybe one noise generator for cloud coverage?
// => Gain the ability to affect local temperature based on cloud coverage
// Hm. Or maybe one noise generator for each cloud pattern?
// => Gain the abillity for small scale and very large scale cloud patterns
// Maybe even completely ditch per-region simulation?
// => Gain the ability for migrating weather patterns
// but then what will determine the cloud pattern?
// Region-less Concept:
// Take an LCGRandom. Use xpos and zpos+((int)totalDays) / 5 for coords
// Iterate over every player
// - iterate over a 20x20 chunk area around it (or max view dist + 5 chunks)
// - domain warp x/z coords. use those coords to init position seed on lcgrand. get random value
// - store in an LerpedWeightedIndex2DMap
// Iterate over every cloud tile
// - read cloud pattern data from the map
// Snow accum needs to take the existing world information into account, i.e. current snow level
// We should probably
// - Store snow accumulation as a float value in mapchunkdata as Dictionary<BlockPos, float>
// - Every 3 seconds or so, "commit" that snow accum into actual snow layer blocks, i.e. if accum >= 1 then add one snow layer and do accum-=1
#endregion
UpdateSnowLayerChunk ch = new UpdateSnowLayerChunk()
{
Coords = chunkPos
};
// Lets wait until we're done with the current job for this chunk
lock (updateSnowLayerQueue)
{
if (updateSnowLayerQueue.Contains(ch))
{
return;
}
}
if (simregion == null)
{
return;
}
double nowTotalHours = ws.api.World.Calendar.TotalHours;
if (nowTotalHours - simregion.LastUpdateTotalHours > 1) // Lets wait until WeatherSimulationRegion is done updating
{
return;
}
ch = GetSnowUpdate(simregion, mc, chunkPos, null);
if (ch != null)
{
lock (updateSnowLayerQueue)
{
updateSnowLayerQueue.Enqueue(ch);
}
}
}