/
SelectedChangeTracker.cs
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/
SelectedChangeTracker.cs
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using DeBroglie.Models;
using DeBroglie.Topo;
using DeBroglie.Wfc;
using System;
using System.Collections.Generic;
using System.Text;
namespace DeBroglie.Trackers
{
public interface IQuadstateChanged
{
void Reset(SelectedChangeTracker tracker);
void Notify(int index, Quadstate before, Quadstate after);
}
/// <summary>
/// Runs a callback when the banned/selected status of tile changes with respect to a tileset.
/// </summary>
public class SelectedChangeTracker : ITracker
{
private readonly TilePropagator tilePropagator;
private readonly WavePropagator wavePropagator;
private readonly TileModelMapping tileModelMapping;
// Indexed by tile topology
private readonly int[] patternCounts;
private readonly Quadstate[] values;
private readonly TilePropagatorTileSet tileSet;
private readonly IQuadstateChanged onChange;
internal SelectedChangeTracker(TilePropagator tilePropagator, WavePropagator wavePropagator, TileModelMapping tileModelMapping, TilePropagatorTileSet tileSet, IQuadstateChanged onChange)
{
this.tilePropagator = tilePropagator;
this.wavePropagator = wavePropagator;
this.tileModelMapping = tileModelMapping;
this.tileSet = tileSet;
this.onChange = onChange;
patternCounts = new int[tilePropagator.Topology.IndexCount];
values = new Quadstate[tilePropagator.Topology.IndexCount];
}
private Quadstate GetQuadstateInner(int index)
{
var selectedPatternCount = patternCounts[index];
tileModelMapping.GetTileCoordToPatternCoord(index, out var patternIndex, out var offset);
var totalPatternCount = wavePropagator.Wave.GetPatternCount(patternIndex);
if (totalPatternCount == 0)
{
return Quadstate.Contradiction;
}
else if (selectedPatternCount == 0)
{
return Quadstate.No;
}
else if (totalPatternCount == selectedPatternCount)
{
return Quadstate.Yes;
}
else
{
return Quadstate.Maybe;
}
}
public Quadstate GetQuadstate(int index)
{
return values[index];
}
public bool IsSelected(int index)
{
return GetQuadstate(index).IsYes();
}
public void DoBan(int patternIndex, int pattern)
{
if(tileModelMapping.PatternCoordToTileCoordIndexAndOffset == null)
{
DoBan(patternIndex, pattern, patternIndex, 0);
}
else
{
foreach (var (p, index, offset) in tileModelMapping.PatternCoordToTileCoordIndexAndOffset.Get(patternIndex))
{
DoBan(patternIndex, pattern, index, offset);
}
}
}
private void DoBan(int patternIndex, int pattern, int index, int offset)
{
var patterns = tileModelMapping.GetPatterns(tileSet, offset);
if (patterns.Contains(pattern))
{
patternCounts[index] -= 1;
}
DoNotify(index);
}
public void Reset()
{
var wave = wavePropagator.Wave;
foreach(var index in tilePropagator.Topology.GetIndices())
{
tileModelMapping.GetTileCoordToPatternCoord(index, out var patternIndex, out var offset);
var patterns = tileModelMapping.GetPatterns(tileSet, offset);
var count = 0;
foreach (var p in patterns)
{
if(patterns.Contains(p) && wave.Get(patternIndex, p))
{
count++;
}
}
patternCounts[index] = count;
values[index] = GetQuadstateInner(index);
}
onChange.Reset(this);
}
public void UndoBan(int patternIndex, int pattern)
{
if (tileModelMapping.PatternCoordToTileCoordIndexAndOffset == null)
{
UndoBan(patternIndex, pattern, patternIndex, 0);
}
else
{
foreach (var (p, index, offset) in tileModelMapping.PatternCoordToTileCoordIndexAndOffset.Get(patternIndex))
{
UndoBan(patternIndex, pattern, index, offset);
}
}
}
private void UndoBan(int patternIndex, int pattern, int index, int offset)
{
var patterns = tileModelMapping.GetPatterns(tileSet, offset);
if (patterns.Contains(pattern))
{
patternCounts[index] += 1;
}
DoNotify(index);
}
private void DoNotify(int index)
{
var newValue = GetQuadstateInner(index);
var oldValue = values[index];
if (newValue != oldValue)
{
values[index] = newValue;
onChange.Notify(index, oldValue, newValue);
}
}
}
}