public static void StartGA(GASettings settings)
{
tg_ga = new TerrainGeneratorGA(settings);
tg_ga.EvaluateFitness();
tg_ga.Draw();
isRunningGA = true;
GAThread = new Thread(new ThreadStart(Run));
GAThread.Start();
}
public TerrainGeneratorGA(GASettings settings)
{
this.settings = settings;
totalFitness = 0;
highestFitness = 0;
population = new List <Terrain>(settings.populationSize);
for (int i = 0; i < settings.populationSize; i++)
{
population.Add(new Terrain(settings.mapWidth, settings.mapHeight, true, settings.tile_selection));
}
}
private void Start_button_Click(object sender, EventArgs e)
{
if (!Program.isRunningGA)
{
GASettings settings = new GASettings();
settings.populationSize = (int)population_number.Value;
settings.mutationRate = (float)mutation_number.Value;
settings.individualMutationRate = (float)individual_mutation_number.Value;
settings.crossoverRate = (float)crossover_number.Value;
settings.mapWidth = (int)mapwidth_number.Value;
settings.mapHeight = (int)mapheight_number.Value;
settings.tile_selection = tile_selection.Checked;
settings.expanded_mutation = expanded_mutation.Checked;
settings.blend_crossover = blend_check.Checked;
settings.refined_clumping = refined_clumping_check.Checked;
settings.ratio_weight = (float)ratio_number.Value;
settings.tilePercentages = new float[Program.NumberOfTerrainTypes];
settings.tilePercentages[(int)TerrainType.Grass] = (float)grass_track.Value / 100f;
settings.tilePercentages[(int)TerrainType.Water] = (float)water_track.Value / 100f;
settings.tilePercentages[(int)TerrainType.Forest] = (float)forest_track.Value / 100f;
settings.tilePercentages[(int)TerrainType.Mountain] = (float)mountain_track.Value / 100f;
settings.tilePercentages[(int)TerrainType.Sand] = (float)sand_track.Value / 100f;
settings.tilePercentages[(int)TerrainType.Ice] = (float)ice_track.Value / 100f;
settings.clumping_weight = (float)clumping_number.Value;
start_button.Text = "STOP";
Program.StartGA(settings);
}
else
{
start_button.Text = "START";
Program.StopGA();
}
}
public float CalcFitness()
{
GASettings settings = Program.tg_ga.settings;
fitness = 0;
tileAmounts = new float[Program.NumberOfTerrainTypes];
for (int x = 0; x < tiles.GetLength(0); x++)
{
for (int y = 0; y < tiles.GetLength(1); y++)
{
TerrainType thisTile = tiles[x, y];
tileAmounts[(int)thisTile] += 1;
if (settings.clumping_weight != 0)
{
for (int x2 = -1; x2 < 2; x2++)
{
for (int y2 = -1; y2 < 2; y2++)
{
if ((x2 == x && y2 == y) ||
x + x2 < 0 ||
y + y2 < 0 ||
x + x2 >= tiles.GetLength(0) ||
y + y2 >= tiles.GetLength(1))
{
continue;
}
TerrainType otherTile = tiles[x + x2, y + y2];
if (!settings.refined_clumping)
{
if (thisTile == otherTile)
{
fitness += settings.clumping_weight;
}
}
else
{
switch (thisTile)
{
case TerrainType.Grass:
if (otherTile == TerrainType.Mountain ||
otherTile == TerrainType.Forest)
{
fitness += settings.clumping_weight;
}
break;
case TerrainType.Water:
if (otherTile == TerrainType.Water)
{
fitness += settings.clumping_weight;
}
break;
case TerrainType.Sand:
if (otherTile == TerrainType.Sand ||
otherTile == TerrainType.Water)
{
fitness += settings.clumping_weight;
}
break;
case TerrainType.Forest:
if (otherTile == TerrainType.Mountain ||
otherTile == TerrainType.Grass)
{
fitness += settings.clumping_weight;
}
break;
case TerrainType.Mountain:
if (otherTile == TerrainType.Grass ||
otherTile == TerrainType.Forest)
{
fitness += settings.clumping_weight;
}
break;
case TerrainType.Ice:
if (otherTile == TerrainType.Ice ||
otherTile == TerrainType.Mountain)
{
fitness += settings.clumping_weight;
}
break;
}
}
}
}
}
}
}
for (int i = 0; i < Program.NumberOfTerrainTypes; i++)
{
tileAmounts[i] = tileAmounts[i] / tiles.Length;
fitness += (1 / (Math.Abs(tileAmounts[i] - settings.tilePercentages[i]) * 100 + 1)) * settings.ratio_weight;
}
return(fitness);
}
public void Settings(GASettings settings)
{
this.settings = settings;
}