public static double GetLength(Pnt p1, Pnt p2)
{
double dx = p2.x - p1.x;
double dy = p2.y - p1.y;
return(Math.Sqrt(dx * dx + dy * dy));
}
public Food(Pnt point, double meat, double herb, double water)
{
this.point = point;
this.meat = meat;
this.herb = herb;
this.water = water;
}
public void FoodTick(double time)
{
double realTime = time;
time += bufferedTime;
double totalFertility = area * fertility / 1000;
if (totalFertility * time < 1)
{
bufferedTime = time;
return;
}
bufferedTime = 0;
lock (food)
{
if (food.Count >= maxFoodCount)
{
return;
}
int count = (int)(totalFertility * time);
for (int i = 0; i < count; i++)
{
Pnt point = new Pnt(rnd.Next((int)leftLifeBorder, (int)rightLifeBorder), rnd.Next((int)topLifeBorder, (int)bottomLifeBorder));
food.Add(new Food(point, rnd.NextDouble(), rnd.NextDouble(), rnd.NextDouble()));
}
}
}
private bool pointInTriangle(Pnt pt, Pnt v1, Pnt v2, Pnt v3)
{
bool b1, b2, b3;
b1 = sign(pt, v1, v2) < 0;
b2 = sign(pt, v2, v3) < 0;
if (b1 != b2)
{
return(false);
}
b3 = sign(pt, v3, v1) < 0;
return(b2 == b3);
}
public void updatePoints()
{
centerP = new Pnt(x, y);
farCenterP =
new Vector(moveVector.alpha, viewDepth * radius)
.setStart(x, y)
.getEnd();
leftP =
new Vector(moveVector.alpha - Math.PI / 2, viewWidth / 2 * radius) //rotate to -90 degrees
.setStart(farCenterP)
.getEnd();
rightP =
new Vector(moveVector.alpha + Math.PI / 2, viewWidth / 2 * radius) //rotate to 90 degrees
.setStart(farCenterP)
.getEnd();
}
public Vector setStart(Pnt point)
{
return(move(point.x - x1, point.y - y1));
}
public Vector(Pnt p1, Pnt p2)
: this(p1.x, p1.y, p2.x, p2.y)
{
}
private double sign(Pnt p1, Pnt p2, Pnt p3)
{
return((p1.x - p3.x) * (p2.y - p3.y) - (p2.x - p3.x) * (p1.y - p3.y));
}