void DrawLine(Muscle muscle)
{
Vector2 edge = muscle.PosC - muscle.PosP;
// calculate angle to rotate line
float angle = (float)Math.Atan2(edge.Y, edge.X);
var texture = _textures.Muscle(muscle.Strength);
_spriteBatch.Draw(texture,
new Rectangle(// rectangle defines shape of line and position of start of line
(int)muscle.PosP.X,
(int)muscle.PosP.Y,
(int)edge.Length(), //sb will strech the texture to fill this rectangle
1), //width of line, change this to make thicker line
null,
new Color((255 - muscle.Strength), 10, 10), //colour of line
angle, //angle of line (calulated above)
new Vector2(0, 0), // point in line about which to rotate
SpriteEffects.None,
0);
}
private float ComputeDelta(Vector2 a, Muscle m)
{
return(m.Length - a.Length());
}
public Animal(Chromosome chromosome, Vector2 startingPosition, int id)
{
ID = id;
Chromosome = chromosome;
Fitness = 0;
int length = Chromosome.Length - 4;
Retard = false;
for (short i = 0; i < length; i += 4)
{
if (Helper.ReadGene(Chromosome[i]) == Feature.Node)
{
var subDna = Chromosome.Slice(i, 4);
var node = new Node()
{
ID = (short)Nodes.Count,
Weight = Helper.NonZero(subDna[1], 10),
Position = startingPosition - new Vector2(Helper.Scale(subDna[2]), Helper.Scale(subDna[3]))
};
Nodes.Add(node);
}
}
if (Nodes.Count == 0)
{
Retard = true;
Muscles.Clear();
return;
}
for (short i = 0; i < length; i += 4)
{
if (Helper.ReadGene(Chromosome[i]) == Feature.Muscle)
{
var subDna = Chromosome.Slice(i, 4);
var muscle = new Muscle()
{
ID = (short)Muscles.Count,
Strength = Helper.NonZero(subDna[1], 10),
Length = Helper.NonZero(Helper.Scale(subDna[2]), 10),
LengthAlpha = Helper.Scale(subDna[2]),
NodeP = (byte)(subDna[3] % Nodes.Count),
NodeC = (byte)(Muscles.Count % Nodes.Count)
};
Muscles.Add(muscle);
}
}
if (Muscles.Count == 0)
{
Retard = true;
Nodes.Clear();
return;
}
for (short i = 0; i < length; i += 4)
{
if (Helper.ReadGene(Chromosome[i]) == Feature.NodeSpeed)
{
var subDna = Chromosome.Slice(i, 4);
var node = subDna[1] % Nodes.Count;
var x = (float)subDna[2] / 100;
var y = (float)subDna[3] / 100;
Nodes[node].Velocity.X = x;
Nodes[node].Velocity.Y = y;
}
if (Helper.ReadGene(Chromosome[i]) == Feature.MuscleOscillation)
{
var subDna = Chromosome.Slice(i, 4);
var muscle = subDna[1] % Muscles.Count;
Muscles[muscle].OscRange = Helper.NonZero(Helper.Scale(subDna[2]), 10);
Muscles[muscle].OscSpeed = (float)subDna[3] / 300;
}
}
foreach (var m in Muscles)
{
Nodes[m.NodeC].Muscles.Add(m);
Nodes[m.NodeP].Muscles.Add(m);
}
foreach (var n in Nodes)
{
if (n.Muscles.Count == 0)
{
Retard = true;
}
}
}