//checking zombie to zombie collisions.
//Model as a sphere (in reality just a cylinder but since all at same height it only checks for a circle radius around character
private void checkZombietoZombie(Zombie z1, Zombie z2)
{
//creating appropriate shapes
Sphere p1 = new Collisions.Sphere(z1.Position, z1.Velocity, z1.modelRadius);
Sphere p2 = new Collisions.Sphere(z2.Position, z2.Velocity, z2.modelRadius);
Contact c = p1.Collides(p2);
if (c != null)
{
if (c.DeepestPoint.Length() > 0)
{
z1.Position -= c.DeepestPoint - c.ContactPoint;
z2.Position += c.DeepestPoint - c.ContactPoint;
}
}
}
private void CheckCollisions(bool Extinguisher)
{
#region Player collisions
Sphere heroSphere = new Sphere(Player.Position, Player.Velocity, Player.modelRadius);
List<Primitive> primitivesNearby = new List<Primitive>();
LevelQuadTree.RetrieveNearbyObjects(heroSphere, ref primitivesNearby,2);
/*foreach (Primitive bx in primitivesNearby)
{
if (!TotalNearbyBoxes.Contains(bx))
TotalNearbyBoxes.Add(bx);
}*/
Contact EndingContact = heroSphere.Collides(EscapeSpot);
if (EndingContact != null && (Player.ItemsList.ContainsKey(key1) || Player.ItemsList.ContainsKey(key2)))
{
GameStates.GameStates.ZombieGameState = GameStates.GameStates.GameState.End;
}
primitivesNearby.AddRange(fireHazards);
foreach (Primitive p in primitivesNearby)
{
Contact c = heroSphere.Collides(p as Box);
if (c != null)
{
ResolveStaticCollision(c, Player, heroSphere);
if(fireDamageDelay <=0)
{
if(((Box)p).Tag == "Fire1" || ((Box)p).Tag == "Fire2" || ((Box)p).Tag == "Fire3" || ((Box)p).Tag == "Fire4")
{
Player.TakeDamage(25);
fireDamageDelay = 5;
}
}
}
}
if (Extinguisher)
{
Sphere ExtSphere = new Sphere(Player.Position + (Player.Velocity / Player.Velocity.Length()) * 20, Vector3.One, 10);
for (int i = 0; i < fireHazards.Count;i++)
{
Sphere boxSphere = new Sphere(fireHazards[i].Position, Vector3.One, fireHazards[i].Size.X / 2);
Contact contact = ExtSphere.Collides(boxSphere);
if (contact != null)
{
if (fireHazards[i].Tag == "Fire1")
{
FireEmitter.particleGroups[0].controller.LifeSpan -= 5;
if (FireEmitter.particleGroups[0].controller.LifeSpan <= 0)
{
FireEmitter.Stop();
fireHazards.Remove(fireHazards[i]);
}
}
if (fireHazards.Count > 0)
{
if (fireHazards[i].Tag == "Fire2")
{
FireEmitter2.particleGroups[0].controller.LifeSpan -= 5;
if (FireEmitter2.particleGroups[0].controller.LifeSpan <= 0)
{
FireEmitter2.Stop();
fireHazards.Remove(fireHazards[i]);
}
}
if (fireHazards[i].Tag == "Fire3")
{
FireEmitter3.particleGroups[0].controller.LifeSpan -= 5;
if (FireEmitter3.particleGroups[0].controller.LifeSpan <= 0)
{
FireEmitter3.Stop();
fireHazards.Remove(fireHazards[i]);
}
}
if (fireHazards[i].Tag == "Fire4")
{
FireEmitter4.particleGroups[0].controller.LifeSpan -= 5;
if (FireEmitter4.particleGroups[0].controller.LifeSpan <= 0)
{
FireEmitter4.Stop();
fireHazards.Remove(fireHazards[i]);
}
}
}
}
}
}
#endregion
#region Zombie collisions
foreach (Zombie z in zombies)
{
// Check for zombies in sight radius and zombies who are not wandering
if ((z.Position - Player.Position).Length() < SIGHT_RADIUS || z.BehaviouralState != BehaviourState.Wander)
{
Sphere zombieSphere = new Sphere(z.Position, z.Velocity, z.modelRadius);
List<Primitive> primitives = new List<Primitive>();
LevelQuadTree.RetrieveNearbyObjects(zombieSphere, ref primitives);
primitives.AddRange(fireHazards);
foreach (Primitive p in primitives)
{
Contact c = zombieSphere.Collides(p as Box);
if (c != null)
{
if (z.BehaviouralState == BehaviourState.Wander)
z.Velocity = Vector3.Cross( z.Velocity, Vector3.Up);
ResolveStaticCollision(c, z, zombieSphere);
}
}
}
}
#endregion
foreach (Zombie z1 in zombies)
{
if ((z1.Position - Player.Position).Length() < SIGHT_RADIUS || z1.BehaviouralState != BehaviourState.Wander)
{
checkZombietoPlayer(z1);
foreach (Zombie z2 in zombies)
{
if (!z2.Equals(z1) && ((z2.Position - Player.Position).Length() < SIGHT_RADIUS || z2.BehaviouralState != BehaviourState.Wander))
{
checkZombietoZombie(z1, z2);
}
}
}
}
checkItemCollisions();
}
//checking zombie to character
private void checkZombietoPlayer(Zombie z)
{
Sphere p1 = new Collisions.Sphere(z.Position, z.Velocity, z.modelRadius);
Sphere p2 = new Collisions.Sphere(Player.Position, Player.Velocity, Player.modelRadius);
Contact c = p1.Collides(p2);
if (c != null)
{
if (c.DeepestPoint.Length() > 0)
{
if (Player.Stance == AnimationStance.Standing)//if standing, dont push player, only affect zombie
{
z.Position -= c.DeepestPoint - c.ContactPoint;
Player.Position += c.DeepestPoint - c.ContactPoint;
}
else//push player back when walking
{
z.Position -= c.DeepestPoint - c.ContactPoint;
}
}
}
}
// Creates a bounding sphere with the specified radius. Any Zombie intersecting the
// bounding sphere will be alerted to the Hero's presence
private void CastSoundWave(float radius)
{
if (radius > 0)
{
Sphere soundSphere = new Sphere(Player.Position, new Vector3(), radius);
foreach (Zombie z in zombies)
{
Sphere zs = new Sphere(z.Position, z.Velocity, z.modelRadius);
if (zs.Collides(soundSphere) != null)
z.Alert(Player);
}
}
}