public Missile(Game game, StaticObject target, StaticObject parent)
: base(game, parent)
{
this.target = target;
Vector3 velocity = this.shipData.speed * Matrix.CreateFromQuaternion(this.rotation).Forward;
BBN_Game.Controller.GameController.particleController.MissileFiredExplosions(parent.Position, velocity, parent);
}
public int getEliminationPriority(StaticObject target)
{
if (target is playerObject)
return PRIORITY_FOR_ELIMINATING_PLAYER;
else if (target is Turret)
return PRIORITY_FOR_ELIMINATING_TURRET;
else if (target is Destroyer)
return PRIORITY_FOR_ELIMINATING_DESTROYER;
else if (target is Fighter)
return PRIORITY_FOR_ELIMINATING_FIGHTER;
else if (target is Base)
return PRIORITY_FOR_ELIMINATING_BASE;
else return 0;
}
protected float lifeSpan; // how long the bullet lasts
#endregion Fields
#region Constructors
/// <summary>
/// Constructor
/// </summary>
/// <param name="game">Game class</param>
/// <param name="parent">The parent of the bullet</param>
public Projectile(Game game, StaticObject parent)
: base(game, Objects.Team.neutral, parent.Position + Vector3.Transform(new Vector3(0, -parent.getGreatestLength / 2, parent.getGreatestLength / 2), Matrix.CreateFromQuaternion(parent.rotation)))
{
this.Health = 10;
numHudLines = 3;
typeOfLine = PrimitiveType.LineStrip;
Vector3 foreward = parent.Position + Vector3.Transform(new Vector3(0, 0, 10), Matrix.CreateFromQuaternion(parent.rotation));
Vector3 PYR = MathEuler.AngleTo(foreward, parent.Position);
rotation = Quaternion.CreateFromYawPitchRoll(PYR.Y, PYR.X, PYR.Z);
this.shipData.speed = parent.ShipMovementInfo.speed;
this.parent = parent;
}
/// <summary>
/// Constructor
/// </summary>
/// <param name="game">Game class</param>
/// <param name="parent">The parent of the bullet</param>
/// <param name="target">The target for the object</param>
public Bullet(Game game, StaticObject target, StaticObject parent)
: base(game, parent)
{
this.target = target;
}
/// <summary>
/// Checks if a particular dodge is valid
/// </summary>
private bool isDodgeValid(DynamicObject callingAI,float dodgeAngle,int dodgeAngleMultiplierYaw,int dodgeAngleMultiplierPitch,PathInformation pathInfo, StaticObject closestObstruction,float dodgeDistance, ref Vector3 dodgeWp)
{
bool bFlag = false;
//Define a conal area around the current path to choose another path from
Quaternion qRot = Quaternion.CreateFromYawPitchRoll(dodgeAngle * dodgeAngleMultiplierYaw, dodgeAngle * dodgeAngleMultiplierPitch, 0);
Vector3 choiceVector = Vector3.Normalize(
Vector3.Transform(pathInfo.currentWaypoint.Position - callingAI.Position,
Matrix.CreateFromQuaternion(qRot)));
dodgeWp = callingAI.Position + choiceVector * dodgeDistance;
if ((dodgeWp - closestObstruction.Position).Length() > dodgeDistance)
{
foreach (GridObjectInterface o in spatialGrid.checkNeighbouringBlocks(dodgeWp))
{
if (o != callingAI)
{
if (o is StaticObject)
{
if ((o.Position - dodgeWp).Length() > (o.getBoundingSphere().Radius + callingAI.getBoundingSphere().Radius * (DODGE_DISTANCE_MULTIPLIER)))
bFlag = true;
}
if (o is DynamicObject)
{
if (isObjectRegistered(o as DynamicObject))
{
Node otherObjectsWaypoint = objectPaths[o as DynamicObject].currentWaypoint;
if (otherObjectsWaypoint != null)
{
if ((otherObjectsWaypoint.Position - dodgeWp).Length() < (o.getBoundingSphere().Radius + callingAI.getBoundingSphere().Radius * (DODGE_DISTANCE_MULTIPLIER)))
bFlag = false;
}
}
}
if (!spatialGrid.isInGrid(new Node(dodgeWp,-1)))
bFlag = false;
}
}
}
return bFlag;
}
/// <summary>
/// Method to set the path of an ai unit in order to dodge an object
/// </summary>
/// <param name="callingAI">ai to perform dodge</param>
/// <param name="closestObstruction">closest obstruction</param>
private void dodgeObject(DynamicObject callingAI, StaticObject closestObstruction)
{
if (!this.isObjectRegistered(callingAI)) return;
PathInformation pathInfo = objectPaths[callingAI];
if (pathInfo.currentWaypoint == null) return;
if (!dodgeInactiveCountDown.Keys.Contains(callingAI))
dodgeInactiveCountDown.Add(callingAI, RETAIN_DODGE_PATH_TICKS);
else
return;
Vector3 dodgeWp = new Vector3();
bool bFlag = false;
// Set the new path:
float dodgeDistance = (callingAI.getBoundingSphere().Radius + closestObstruction.getBoundingSphere().Radius) * DODGE_DISTANCE_MULTIPLIER;
float distanceToObject = (callingAI.Position - closestObstruction.Position).Length();
float distanceToCurrentWp = (callingAI.Position - pathInfo.currentWaypoint.Position).Length();
float dodgeAngle = (float)Math.Abs(Math.Atan2(distanceToObject, dodgeDistance));
for (int i = (int)Math.Ceiling(dodgeAngle); i * dodgeAngle < Math.PI; ++i)
{
for (int j = (int)Math.Ceiling(dodgeAngle); j * dodgeAngle < Math.PI; ++j)
{
if (isDodgeValid(callingAI, dodgeAngle, i, j, pathInfo, closestObstruction, dodgeDistance, ref dodgeWp))
{
bFlag = true;
break;
}
if (isDodgeValid(callingAI, -dodgeAngle, i, j, pathInfo, closestObstruction, dodgeDistance, ref dodgeWp))
{
bFlag = true;
break;
}
}
if (bFlag)
break;
}
List<Node> path = pathInfo.remainingPath;
if (path.Count > 0)
path.Remove(path.Last());
path.Add(new Node(dodgeWp, -1));
pathInfo.remainingPath = path;
}
/// <summary>
/// Performs a dogfight move against the opponent
/// </summary>
/// <param name="ti">Team on which the ai is registered</param>
/// <param name="ai">Character to perform move</param>
/// <param name="target">Opponent of the ai</param>
public void doDogfightMove(TeamInformation ti, DynamicObject ai, StaticObject target)
{
if (!this.isObjectRegistered(ai)) return;
float radiusToGoBehindTarget = (target.getBoundingSphere().Radius + ai.getBoundingSphere().Radius) * RADIUS_MULTIPLIER_TO_GO_BEHIND_TARGET;
Vector3 wpPosition = target.Position + Vector3.Normalize(Matrix.CreateFromQuaternion(target.rotation).Forward) * radiusToGoBehindTarget;
Vector3 wpDPosition = target.Position + Vector3.Normalize(Matrix.CreateFromQuaternion(target.rotation).Up) * radiusToGoBehindTarget / RADIUS_FACTOR_TO_GO_ABOVE_TARGET;
if (Vector3.Dot(Vector3.Normalize(wpPosition - target.Position), Vector3.Normalize(ai.Position - target.Position)) < DOT_ANGLE_TO_STOP_DOGFIGHT_MOVE ||
(ai.Position - target.Position).Length() > CHASE_WHEN_FURTHER)
{
PathInformation fighterPath = objectPaths[ai];
List<Node> waypointList = fighterPath.remainingPath;
//we clear the waypoint list and add new waypoints:
if (waypointList.Count > 0)
{
bool shouldAddTopWaypt = (Vector3.Dot(Vector3.Normalize(Matrix.CreateFromQuaternion(target.rotation).Forward), Vector3.Normalize(target.Position - ai.Position)) > 0);
if ((wpPosition - waypointList.ElementAt(0).Position).Length() > TARGET_WP_BUFFER || shouldAddTopWaypt)
{
waypointList.Clear();
if (shouldAddTopWaypt)
waypointList.Insert(0, new Node(wpDPosition, -1));
waypointList.Insert(0, new Node(wpPosition, -1));
}
}
else
{
if (Vector3.Dot(Vector3.Normalize(Matrix.CreateFromQuaternion(target.rotation).Forward), Vector3.Normalize(target.Position - ai.Position)) > 0)
waypointList.Insert(0, new Node(wpDPosition, -1));
waypointList.Insert(0, new Node(wpPosition, -1));
}
fighterPath.remainingPath = waypointList;
}
else //stop navigation (we are behind the target so we can start shooting it)
getPath(ai).Clear();
}
/// <summary>
/// override for the update method to call on the camera update methods.
/// </summary>
/// <param name="gt">Game time variable</param>
public override void Update(GameTime gt)
{
// todo add the if statement on the enum for cockpit View
if (cameraType.Equals(CurrentCam.Chase))
chaseCamera.update(gt, Position, Matrix.CreateFromQuaternion(rotation));
else
fpCamera.update(gt, Position, Matrix.CreateFromQuaternion(rotation), this.getGreatestLength);
if (target != null)
{
if (target is Turret)
{
if (((Turret)target).Repairing)
target = null;
}
else
{
if (target.getHealth <= 0)
target = null;
}
}
if (target == null)
{
getNewTarget();
}
base.Update(gt);
}
/// <summary>
/// This tries to get
/// </summary>
public void getNewTarget()
{
List<Grid.GridObjectInterface> list = Controller.GameController.getTargets(this);
if (list.Count > 0)
{
for (int i = 0; i < list.Count; ++i)
{
if (list.ElementAt(i) is StaticObject)
{
StaticObject obj = (StaticObject)list.ElementAt(i);
if (obj.Team != Team.neutral)
{
if (obj.Team != this.Team)
{
if (!previousList.Contains(obj))
{
previousList.Add(obj);
target = obj;
return;
}
}
}
}
}
previousList.Clear();
}
}
public void registerHitOnBaseOrTurretOrFighters(StaticObject victim, StaticObject shooter)
{
TeamInformation tiV = getTeam(victim);
TeamInformation tiS = getTeam(shooter);
if (tiV == null || tiS == null) return;
if (tiV != tiS)
if (!isTargetMarkedForElimination(shooter, tiV))
if (!isTargetAlreadyBattledByFighters(tiV, shooter))
{
if (shooter is playerObject)
{
if (victim is Fighter || victim is Base)
tiV.scrambleQueue.Add(new KeyValuePair<int, StaticObject>(PRIORITY_FOR_ELIMINATING_PLAYER, shooter));
else if (victim is Turret)
{
float distanceFromTurretToHomeBase = (victim.Position - tiV.teamBase.Position).Length();
if (distanceFromTurretToHomeBase <= DISTANCE_WHEN_TURRET_IS_CLOSE_TO_BASE)
tiV.scrambleQueue.Add(new KeyValuePair<int, StaticObject>(PRIORITY_FOR_ELIMINATING_PLAYER, shooter));
}
}
else if (shooter is Destroyer)
{
if (victim is Fighter || victim is Base)
tiV.scrambleQueue.Add(new KeyValuePair<int, StaticObject>(PRIORITY_FOR_ELIMINATING_DESTROYER, shooter));
else if (victim is Turret)
{
float distanceFromTurretToHomeBase = (victim.Position - tiV.teamBase.Position).Length();
if (distanceFromTurretToHomeBase <= DISTANCE_WHEN_TURRET_IS_CLOSE_TO_BASE)
tiV.scrambleQueue.Add(new KeyValuePair<int, StaticObject>(PRIORITY_FOR_ELIMINATING_DESTROYER, shooter));
}
}
}
}
private int topupAssignedFightersToBattle(TeamInformation ti, StaticObject enemy)
{
Dictionary<StaticObject, int> numEngagedFightersPerEnemy = countFightersEngagedOnEnemy(ti);
int numToScramble = 0;
if (enemy is playerObject)
numToScramble = FIGHTERS_TO_SCRAMBLE_FOR_PLAYER;
else if (enemy is Destroyer)
numToScramble = FIGHTERS_TO_SCRAMBLE_FOR_DESTROYER;
//if the enemy is already being faught then just top up the fighters when they die off
if (numEngagedFightersPerEnemy.Keys.Contains(enemy))
numToScramble -= numEngagedFightersPerEnemy[enemy];
//now get the healthiest fighters and scramble them:
if (numToScramble > 0)
{
PowerDataStructures.PriorityQueue<float, Fighter> healthiestInactiveFighters = getHealthiestFighters(ti, FighterState.FS_IDLE);
int numIdleAvailable = healthiestInactiveFighters.Count;
//when we have enough fighters available just scramble them
if (numIdleAvailable >= numToScramble)
{
for (int i = 0; i < numToScramble; ++i)
ti.fighterBattleList.Add(healthiestInactiveFighters.DequeueValue(), enemy);
return numIdleAvailable;
}
//when we have too few fighters reassign them to more important targets
else
{
//add what we do have:
for (int i = 0; i < numIdleAvailable; ++i)
ti.fighterBattleList.Add(healthiestInactiveFighters.DequeueValue(), enemy);
//now find more fighters and reassign:
PowerDataStructures.PriorityQueue<float, Fighter> healthiestActiveFighters = getHealthiestFighters(ti, FighterState.FS_ENGAGED);
int numReassigned = 0;
foreach (KeyValuePair<float,Fighter> fighter in healthiestActiveFighters)
if (getEliminationPriority(ti.fighterBattleList[fighter.Value]) < getEliminationPriority(enemy))
{
ti.fighterBattleList.Remove(fighter.Value);
ti.fighterBattleList.Add(fighter.Value, enemy);
if (numIdleAvailable+(++numReassigned) == numToScramble)
break;
}
return numReassigned+numIdleAvailable;
}
}
else return 0;
}
private bool isTargetMarkedForElimination(StaticObject target, TeamInformation ti)
{
foreach (System.Collections.Generic.KeyValuePair<int, BBN_Game.Objects.StaticObject> pair in ti.scrambleQueue)
if (pair.Value == target)
return true;
return false;
}
private bool isTargetAlreadyBattledByFighters(TeamInformation ti, StaticObject target)
{
return ti.fighterBattleList.Values.Contains(target);
}
private TeamInformation getTeam(StaticObject ai)
{
foreach (TeamInformation ti in infoOnTeams)
if (ai.Team == ti.teamId)
return ti;
return null;
}
/// <summary>
/// Constructor
/// </summary>
/// <param name="game">Game class</param>
/// <param name="parent">The parent of the bullet</param>
/// <param name="target">The target for the object</param>
public Bullet(Game game, StaticObject target, StaticObject parent)
: base(game, parent)
{
this.target = target;
}
