Added very basic chunk unloading.
parent
f8819937e1
commit
30b70d1d7a
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@ -2,6 +2,7 @@ using Godot;
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using System;
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using System.Collections.Generic;
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using System.Diagnostics;
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using System.Linq;
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public class World : Spatial
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{
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@ -9,7 +10,7 @@ public class World : Spatial
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private PackedScene _worldChunkScene = GD.Load<PackedScene>("res://scenes/WorldChunk.tscn");
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// constants
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public const int ChunkSize = 4;
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public const int ChunkSize = 16;
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public HexGrid HexGrid = new HexGrid();
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public Spatial Chunks;
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public Color DebugColor;
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@ -32,13 +33,16 @@ public class World : Spatial
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private int[] _previousCenterChunkCoord = { 0, 0 };
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private Rect2 _centerChunkRect2 = new Rect2();
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private Random _debugColorRandom = new Random();
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private Dictionary<Tuple<int, int>, WorldChunk> _worldChunks;
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private Dictionary<Tuple<int, int>, WorldChunk> _cachedWorldChunks;
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private List<Tuple<int, int>> _activeChunkIndices = new();
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private List<Tuple<int, int>> _addedChunkIndices = new();
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private List<Tuple<int, int>> _removedChunkIndices = new();
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public World()
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{
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Debug.Assert(ChunkSize % 2 == 0);
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_worldChunks = new Dictionary<Tuple<int, int>, WorldChunk>();
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_cachedWorldChunks = new Dictionary<Tuple<int, int>, WorldChunk>();
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}
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// Called when the node enters the scene tree for the first time.
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@ -52,15 +56,20 @@ public class World : Spatial
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public WorldChunk GetOrCreateWorldChunk(int xIndex, int yIndex, Color debugColor)
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{
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if (_worldChunks.ContainsKey(new Tuple<int, int>(xIndex, yIndex)))
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if (IsTileCached(xIndex, yIndex))
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{
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WorldChunk cachedChunk = _worldChunks[new Tuple<int, int>(xIndex, yIndex)];
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WorldChunk cachedChunk = _cachedWorldChunks[new Tuple<int, int>(xIndex, yIndex)];
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return cachedChunk;
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}
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return CreateWorldChunk(xIndex, yIndex, debugColor);
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}
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private bool IsTileCached(int xIndex, int yIndex)
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{
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return _cachedWorldChunks.ContainsKey(new Tuple<int, int>(xIndex, yIndex));
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}
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private WorldChunk CreateWorldChunk(int xIndex, int yIndex, Color debugColor)
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{
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WorldChunk result = (WorldChunk)_worldChunkScene.Instance();
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@ -73,6 +82,7 @@ public class World : Spatial
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Vector2 planeCoordNorthEast = HexGrid.GetHexCenterFromOffset(offsetCoordNorthEast) +
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new Vector2(HexGrid.HexSize.x, -HexGrid.HexSize.y) * 0.5f;
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result.ChunkAddress = new Vector2(xIndex, yIndex);
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result.PlaneRect = new Rect2(
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new Vector2(planeCoordSouthWest.x, planeCoordNorthEast.y),
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new Vector2(planeCoordNorthEast.x - planeCoordSouthWest.x, planeCoordSouthWest.y - planeCoordNorthEast.y));
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@ -82,21 +92,86 @@ public class World : Spatial
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Chunks.AddChild(result);
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Tuple<int, int> chunkIndex = new Tuple<int, int>(xIndex, yIndex);
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_worldChunks.Add(chunkIndex, result);
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_cachedWorldChunks.Add(chunkIndex, result);
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return result;
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}
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public void UpdateCenterChunkFromPlaneCoord(Vector2 planeCoord)
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{
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HexCell centerOffsetCoord = HexGrid.GetHexAt(planeCoord);
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Vector2 chunkIndexFloatUnrounded = (centerOffsetCoord.OffsetCoords / (float)ChunkSize);
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Vector2 chunkIndexFloat = (centerOffsetCoord.OffsetCoords / (float)ChunkSize).Floor();
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Tuple<int, int> chunkIndex = new Tuple<int, int>((int)chunkIndexFloat.x, (int)chunkIndexFloat.y);
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// mark all chunks as retired
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Dictionary<Tuple<int, int>, WorldChunk> oldCachedChunks = new(_cachedWorldChunks);
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// set new center chunk
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var chunkIndex = GetChunkTupleFromPlaneCoord(planeCoord);
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WorldChunk currentChunk = GetOrCreateWorldChunk(chunkIndex.Item1, chunkIndex.Item2,
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new Color(GD.Randf(), GD.Randf(), GD.Randf()));
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_centerChunkRect2 = currentChunk.PlaneRect;
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// load or create adjacent chunks
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_activeChunkIndices = new List<Tuple<int, int>>();
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_activeChunkIndices.Add(new Tuple<int, int>(chunkIndex.Item1 - 1, chunkIndex.Item2 - 1));
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_activeChunkIndices.Add(new Tuple<int, int>(chunkIndex.Item1, chunkIndex.Item2 - 1));
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_activeChunkIndices.Add(new Tuple<int, int>(chunkIndex.Item1 + 1, chunkIndex.Item2 - 1));
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_activeChunkIndices.Add(new Tuple<int, int>(chunkIndex.Item1 - 1, chunkIndex.Item2));
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_activeChunkIndices.Add(new Tuple<int, int>(chunkIndex.Item1, chunkIndex.Item2));
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_activeChunkIndices.Add(new Tuple<int, int>(chunkIndex.Item1 + 1, chunkIndex.Item2));
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_activeChunkIndices.Add(new Tuple<int, int>(chunkIndex.Item1 - 1, chunkIndex.Item2 + 1));
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_activeChunkIndices.Add(new Tuple<int, int>(chunkIndex.Item1, chunkIndex.Item2 + 1));
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_activeChunkIndices.Add(new Tuple<int, int>(chunkIndex.Item1 + 1, chunkIndex.Item2 + 1));
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foreach(Tuple<int, int> activeChunkIndex in _activeChunkIndices)
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{
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GetOrCreateWorldChunk(activeChunkIndex.Item1, activeChunkIndex.Item2, new Color(GD.Randf(), GD.Randf(), GD.Randf()));
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}
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// unload retired chunks
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_removedChunkIndices.Clear();
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_addedChunkIndices.Clear();
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foreach (var cachedChunkKey in oldCachedChunks.Keys)
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{
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if (!_activeChunkIndices.Contains(cachedChunkKey))
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{
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RemoveChunk(cachedChunkKey);
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}
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}
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foreach (var chunkKey in _activeChunkIndices)
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{
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if (!oldCachedChunks.ContainsKey(chunkKey))
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{
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_addedChunkIndices.Add(chunkKey);
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}
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}
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GD.Print("Removed Chunks " + _removedChunkIndices.Count);
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GD.Print("Added Chunks " + _addedChunkIndices.Count);
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}
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private void RemoveChunk(Tuple<int, int> cachedChunkKey)
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{
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_cachedWorldChunks.Remove(cachedChunkKey);
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_removedChunkIndices.Add(cachedChunkKey);
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foreach (WorldChunk chunk in Chunks.GetChildren())
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{
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if (chunk.ChunkAddress == new Vector2(cachedChunkKey.Item1, cachedChunkKey.Item2))
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{
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chunk.QueueFree();
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}
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}
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}
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private Tuple<int, int> GetChunkTupleFromPlaneCoord(Vector2 planeCoord)
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{
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HexCell centerOffsetCoord = HexGrid.GetHexAt(planeCoord);
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Vector2 chunkIndexFloat = (centerOffsetCoord.OffsetCoords / (float)ChunkSize).Floor();
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Tuple<int, int> chunkIndex = new Tuple<int, int>((int)chunkIndexFloat.x, (int)chunkIndexFloat.y);
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return chunkIndex;
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}
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public void SetCenterPlaneCoord(Vector2 centerPlaneCoord)
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