public Vector2 react(Animal me, Animal you, ref Vector2 dir, float dist)
{
Vector2 result = me.AnimalSpec.MemberSensitivity * you.Direction;
float len = result.Length();
Debug.Assert(0 < len && len < 1e4);
return result;
}
public IEnumerable<Animal> findNeighbors(Animal cnt)
{
IEnumerable<Animal> seq;
float dst = cnt.AnimalSpec.DetectionDistance;
seq = Grid.encompassNeighbors(cnt, dst);
return seq;
}
public override void aimAt(Animal someone, float sdist, ref Animal target, ref float tdist)
{
if (sdist < tdist && someone.AnimalType == AnimalType.Fish) {
target = someone;
tdist = sdist;
}
}
public Vector2 react(Animal me, Animal you, ref Vector2 dir, float dist)
{
Vector2 result = me.Direction * me.AnimalSpec.InertiaDirectionSensitivity;
float len = result.Length();
Debug.Assert(0 < len && len < 1e5);
return result;
}
public override void aimAt(Animal someone, float sdist, ref Animal target, ref float tdist)
{
if (sdist < tdist) {
target = someone;
tdist = sdist;
}
}
public Vector2 react(Animal me, Animal you, ref Vector2 dir, float dist)
{
float weight = me.AnimalSpec.MemberSensitivity
* (1 - dist / me.AnimalSpec.SeparationDistance);
Vector2 result = dir * -weight;
float len = result.Length();
Debug.Assert(0 < len && len < 1e5);
return result;
}
public Vector2 react(Animal me, Animal you, ref Vector2 dir, float dist)
{
float angle = (float)rand.NextDouble() * MathHelper.TwoPi;
float ratio = me.AnimalSpec.RandomDirectionSensitivity;
Vector2 result =
new Vector2(ratio * (float)Math.Cos(angle), ratio * (float)Math.Sin(angle));
float len = result.Length();
Debug.Assert(0 < len && len < 1e5);
return result;
}
public Vector2 react(Animal me, Animal you, ref Vector2 dir, float dist)
{
Vector2 result = dir * -me.AnimalSpec.AlienSensitivity;
float len = result.Length();
//acclerate radialspeed
if (me.RadialVelocity - FishSpec.RadialVelocityOriginal < 20)
{
me.RadialVelocity *= 10.0f;
}
Debug.Assert(0 < len && len < 1e5);
return result;
}
public virtual void reactTo(Animal you, ref Animal target, ref float tdist, ref Vector2 newDir)
{
if (this == you)
return;
Vector2 dir = you.Position - Position;
float dist = dir.Length();
if (!(0.01f < dist && dist < AnimalSpec.DetectionDistance))
return;
aimAt(you, dist, ref target, ref tdist);
dir.Normalize();
foreach (Behavior bhv in Behaviors) {
if (bhv.isReactive(this, you, ref dir, dist))
newDir += bhv.react(this, you, ref dir, dist);
}
}
public bool isReactive(Animal me, Animal you, ref Vector2 dir, float dist)
{
return (you.AnimalType == AnimalType.Fish)
&& (dist < me.AnimalSpec.DetectionDistance);
}
public abstract void updateColor(Animal nearest, float dist);
public void add(Animal newOne)
{
int pos = index(newOne.Position);
Cells[pos].AddFirst(newOne);
}
public override void updateColor(Animal nearest, float dist)
{
float weight = dist / AnimalSpec.SeparationDistance;
Color = new Color(1f, weight, weight);
}
public bool isReactive(Animal me, Animal you, ref Vector2 dir, float dist)
{
return (me.AnimalType == you.AnimalType);
}
public IEnumerable<Animal> encompassNeighbors(Animal cnt, float dist)
{
List<Animal> ngh = new List<Animal>();
Vector2 offset = new Vector2(dist, dist);
int minx, miny;
resolve(cnt.Position - offset, out minx, out miny);
int maxx, maxy;
resolve(cnt.Position + offset, out maxx, out maxy);
for (int y = miny; y <= maxy; y++) {
for (int x = minx; x <= maxx; x++) {
if (isCollide(cnt.Position, dist, x, y) == false)
continue;
int pos = index(x,y);
ngh.AddRange(Cells[pos]);
}
}
return ngh;
}
public void move(Animal anm, Vector2 newPos)
{
Grid.remove(anm);
anm.Position = newPos;
Grid.add(anm);
}
public void remove(Animal oldone)
{
AnimalList.Remove(oldone);
Grid.remove(oldone);
}
public bool remove(Animal oldOne)
{
int pos = index(oldOne.Position);
return Cells[pos].Remove(oldOne);
}
public Compass(Animal a, int q)
{
this.anm = a;
this.quad = q;
}
public abstract void aimAt(Animal someone, float sdist, ref Animal target, ref float tdist);
public bool isReactive(Animal me, Animal you, ref Vector2 dir, float dist)
{
return true;
}
public bool isReactive(Animal me, Animal you, ref Vector2 dir, float dist)
{
return (me.AnimalType == you.AnimalType)
&& (dist > me.AnimalSpec.SeparationDistance);
}
public void add(Animal newone)
{
AnimalList.Add(newone);
Grid.add(newone);
}
public bool isReactive(Animal me, Animal you, ref Vector2 dir, float dist)
{
return (you.AnimalType == AnimalType.Whale) && you.bActive == true
&& (dist < me.AnimalSpec.AlienSeparationDistance);
}