private Field CreateField(Index2d size, int creatureCount, int speed, int vision, int maxHealth)
{
var field = new Field(size);
var rand = new Random();
for (int i = 0; i < creatureCount; i++)
{
var creature = new Ex1Creature(speed, vision, maxHealth);
int x, y;
do
{
x = rand.Next(0, size.X);
y = rand.Next(0, size.Y);
}while (!field.AddEntity(creature, (x, y, x + creature.Size - 1, y + creature.Size - 1)));
}
return(field);
}