public bool InProximity(GameObject aOtherObj, float proximity)
{
float dist;
Vector2.Distance(ref Location, ref aOtherObj.Location, out dist);
if (dist < (Radius + aOtherObj.Radius + proximity))
return true;
return false;
}
public bool CollidesWith(GameObject aOtherObj)
{
float dist;
Vector2.Distance(ref Location, ref aOtherObj.Location, out dist);
if (dist < (Radius + aOtherObj.Radius))
return true;
return false;
}
private void updateAllNearby()
{
_NearbyFoodSources.Clear();
_CollidingObject = null;
GameObjectManager manager = GameObjectManager.Instance;
for (int i = 0; i < manager.Count; ++i)
{
GameObject currObj = manager[i];
if (this != currObj)
{
// Can only collide with person or person flock.
if (currObj.CollidesWith(this) && (currObj is Person || currObj is PersonFlock))
_CollidingObject = currObj;
if (currObj is FoodSource)
{
FoodSource mySource = (FoodSource)currObj;
if (mySource.CanEat && mySource.InProximity(this, FOOD_PROXIMITY))
_NearbyFoodSources.Push((FoodSource)currObj);
}
}
}
}
public override void Drop()
{
_eMyState = State.Alone;
if (_CollidingObject != null)
{
GameObjectManager manager = GameObjectManager.Instance;
if (_CollidingObject is PersonFlock)
{
manager.RemoveObject(this);
((PersonFlock)_CollidingObject).AddPerson(this);
}
else if (_CollidingObject is Person)
{
// Create a flock from the two people who just collided
manager.RemoveObject(this);
manager.RemoveObject(_CollidingObject);
_eMyState = State.Limbo;
((Person)_CollidingObject)._eMyState = State.Limbo;
PersonFlock flock = new PersonFlock(this.Location);
flock.AddPerson(this);
flock.AddPerson((Person)_CollidingObject);
flock.Location = this.Location;
manager.AddObject(flock);
GameObjectManager.Instance.NumGroupsFormed++;
if (_CollidingObject.EatingObject != null)
{
_CollidingObject.EatingObject.StopEating(_CollidingObject);
_CollidingObject.EatingObject = null;
}
}
_CollidingObject = null;
}
}
public void RemoveObject(GameObject aObject)
{
_RemoveObject.Add(aObject);
}
public void AddObject(GameObject aObject)
{
_AddObject.Add(aObject);
}
private void processMouseEvents(GameTime aTime)
{
MouseState state = Mouse.GetState();
if (lastMouseState == null)
lastMouseState = state;
Vector2 mouseLoc = new Vector2(state.X, state.Y);
if (state.LeftButton == ButtonState.Pressed)
{
if (this.inTransitByUser == null)
{
GameObjectManager manager = GameObjectManager.Instance;
for (int i = 0; i < manager.Count; ++i)
{
if(manager[i].RadiusCheck(ref mouseLoc, 0.0f))
{
if (manager[i].CanBeHeld)
{
this.inTransitByUser = manager[i];
manager[i].Hold();
SoundState.Instance.PlayPickupSound(aTime);
}
else if(_bPrintDebugInfo)
{
Console.WriteLine(manager[i].GetDebugInfo());
}
}
}
}
}
if (state.RightButton == ButtonState.Pressed &&
lastMouseState.RightButton != ButtonState.Pressed)
{
if (Keyboard.GetState().IsKeyDown(Keys.LeftControl))
{
GameObjectManager manager = GameObjectManager.Instance;
for (int i = 0; i < manager.Count; ++i)
{
if (manager[i].RadiusCheck(ref mouseLoc, 0.0f))
{
if (manager[i] is Person)
{
manager[i]._Hunger += 200;
}
}
}
}
}
if (this.inTransitByUser != null)
{
int x = (int)Math.Max(this.inTransitByUser.Radius, Math.Min(mouseLoc.X, GameBoundaries.Width - this.inTransitByUser.Radius));
int y = (int)Math.Max(this.inTransitByUser.Radius, Math.Min(mouseLoc.Y, GameBoundaries.Height - this.inTransitByUser.Radius));
Vector2 loc = new Vector2(x, y);
this.inTransitByUser.MoveTo(ref loc);
}
if (Mouse.GetState().LeftButton == ButtonState.Released)
{
if (this.inTransitByUser != null)
{
inTransitByUser.Drop();
this.inTransitByUser = null;
}
}
lastMouseState = state;
}
public override void Update(GameTime aTime)
{
_fCurrentRadius = 0.0f;
_CurrentCenterOfMass = CalculateCenterOfMass();
Location = _CurrentCenterOfMass;
for (int i = 0; i < _People.Count; ++i)
{
float fdistCoM = Vector2.Distance(_CurrentCenterOfMass, _People[i].Location) + _People[i].Radius;
_fCurrentRadius = Math.Max(fdistCoM, _fCurrentRadius);
_People[i].Update(aTime);
if (_eMyState != State.Held)
{
float fdist;
Vector2.Distance(ref _People[i].Location, ref _CurrentCenterOfMass, out fdist);
if (fdist > 25.0f * _People.Count)
RemovePerson(_People[i]);
}
}
for (int i = 0; i < _ExternalForces.Count; ++i)
{
_ExternalForces[i].iLifeLeft -= aTime.ElapsedGameTime.Milliseconds;
if (_ExternalForces[i].iLifeLeft <= 0)
_ExternalForces.RemoveAt(i);
}
// Flocks can move on their own accord. Stop eating if we're too far away from
// our food source.
if (EatingObject != null && !this.InProximity(EatingObject, FOOD_PROXIMITY))
{
EatingObject.StopEating(this);
EatingObject = null;
_eMyState = State.Normal;
}
updateAllNearby();
switch (_eMyState)
{
case State.Held:
break;
case State.Eating:
if(!EatingObject.Eat(aTime))
{
EatingObject.StopEating(this);
EatingObject = null;
_eMyState = State.Normal;
}
break;
case State.Normal:
if (_CollidingObject is PersonFlock)
{
// Add all of us into them.
PersonFlock theFlock = ((PersonFlock)_CollidingObject);
for (int i = 0; i < _People.Count; ++i)
{
RemovePerson(_People[i]);
theFlock.AddPerson(_People[i]);
}
}
_CollidingObject = null;
startEatingIfPossible();
break;
}
for (int i = 0; i < _AddPeople.Count; ++i)
AddToFlock(_AddPeople[i]);
_AddPeople.Clear();
for (int i = 0; i < _RemovePeople.Count; ++i)
RemoveFromFlock(_RemovePeople[i]);
_RemovePeople.Clear();
if (_People.Count == 1)
RemoveFromFlock(_People[0]);
if (_People.Count == 0)
{
if (EatingObject != null)
EatingObject.StopEating(this);
GameObjectManager.Instance.RemoveObject(this);
}
}
public void StopEating(GameObject aEater)
{
Debug.Assert(aEater == _Eater);
_Eater = null;
}
public void StartEating(GameObject aEater)
{
_Eater = aEater;
}