///<summary>
///constructor
///</summary>
///<param name="graph"></param>
///<param name="source"></param>
///<param name="target"></param>
///<param name="bot">The bot requesting the search</param>
public GraphSearchDijkstrasTimeSliced(SparseGraph graph,
int source,
int target,
BotEntity bot)
: base(SearchTypes.Dijkstra, bot)
{
_graph = graph;
_shortestPathTree = new List<NavGraphEdge>(graph.NumNodes);
_searchFrontier = new List<NavGraphEdge>(graph.NumNodes);
_costToThisNode = new List<float>(graph.NumNodes);
for (int i = 0; i < graph.NumNodes; i++)
{
ShortestPathTree.Add(null);
SearchFrontier.Add(null);
CostToThisNode.Add(0);
}
_source = source;
Target = target;
//create the PQ
PQ = new IndexedPriorityQueueLow(CostToThisNode, Graph.NumNodes);
//put the source node on the queue
PQ.Insert(source);
}
//returns a value between 0 and 1 based on the total amount of ammo the
//bot is carrying each of the weapons. Each of the three weapons a bot can
//pick up can contribute a third to the score. In other words, if a bot
//is carrying a RL and a RG and has max ammo for the RG but only half max
//for the RL the rating will be 1/3 + 1/6 + 0 = 0.5
public static float TotalWeaponStrength(BotEntity bot)
{
float maxRoundsForShotgun =
GetMaxRoundsBotCanCarryForWeapon(
WeaponTypes.Shotgun);
float maxRoundsForRailgun =
GetMaxRoundsBotCanCarryForWeapon(
WeaponTypes.Railgun);
float maxRoundsForRocketLauncher =
GetMaxRoundsBotCanCarryForWeapon(
WeaponTypes.RocketLauncher);
float totalRoundsCarryable =
maxRoundsForShotgun + maxRoundsForRailgun + maxRoundsForRocketLauncher;
float numSlugs =
bot.WeaponSystem.GetAmmoRemaining(
WeaponTypes.Railgun);
float numCartridges =
bot.WeaponSystem.GetAmmoRemaining(
WeaponTypes.Shotgun);
float numRockets =
bot.WeaponSystem.GetAmmoRemaining(
WeaponTypes.RocketLauncher);
//the value of the tweaker (must be in the range 0-1) indicates how much
//desirability value is returned even if a bot has not picked up any weapons.
//(it basically adds in an amount for a bot's persistent weapon -- the blaster)
const float tweaker = 0.05f;
return tweaker + (1 - tweaker)*(numSlugs + numCartridges + numRockets)/
totalRoundsCarryable;
}
//returns a score between 0 and 1 representing the desirability of the
//strategy the concrete subclass represents
public override float CalculateDesirability(BotEntity bot)
{
float desirability = 0.0f;
//there is no point in trying to capture their flag when we don't even know where
//to return it to
if (bot.FoundTriggers.NumberOfFlags > 0 && bot.FoundTriggers.IsOurFlagDiscovered)
{
//if we are carrying a flag, we should really try to return it to our base
if (bot.IsCarryingFlag)
desirability = 2;
else
{
//if we have decent health, good ammo, and we are a high ranking officer
//we want to get their flag, otherwise we will tend to guard
desirability = bot.HealthPercentage *
bot.WeaponSystem.CurrentWeapon.PercentageRoundsLeft*
3/(2-(int)bot.Rank);
desirability = MathHelper.Clamp(desirability, 0, 1);
//bias the value according to the personality of the bot
desirability *= _characterBias;
}
}
return desirability;
}
/// <summary>
/// This checks to see if we need to explore to find weapons or health
/// Once we know where at least one health pack is,
/// and one weapon, we really have reason to explore anymore
/// </summary>
/// <param name="bot">bot to evaluate for</param>
/// <returns></returns>
public override float CalculateDesirability(BotEntity bot)
{
//figure out desirability of exploring for health
//if we are unhealthy and we don't know where any health is
float howBadIWantToExploreForHealth = (1 - bot.HealthPercentage)*(bot.FoundTriggers.NumberOfHealthItems > 1
?
1
:
0);
//figure out desirability of exploring for the weapon we are holding
//if we are unloaded and we don't know where any of the weapon is
//by default the bots walk around carrying their blaster...
float howBadIWantToExploreForAWeapon;
if(bot.WeaponSystem.CurrentWeapon.WeaponType == WeaponTypes.Blaster)
{
howBadIWantToExploreForAWeapon = GameManager.GameManager.Instance.Parameters.PropensityToSearchForAWeapon;
}
else
{
howBadIWantToExploreForAWeapon = (1 - bot.WeaponSystem.CurrentWeapon.PercentageRoundsLeft) *
(bot.FoundTriggers.NumberOfWeaponsByType(bot.WeaponSystem.CurrentWeapon.WeaponType) < 1
?
1
:
0);
}
//get the maximum desire to explore for something
float desirability = MathHelper.Max(howBadIWantToExploreForHealth, howBadIWantToExploreForAWeapon);
//ensure the value is in the range 0 to 1
desirability = MathHelper.Clamp(desirability, 0.0f, 1.0f);
return desirability;
}
///<summary>
///constructor for the NavigationalMemoryRecord class
///</summary>
public NavigationalMemoryRecord(
BotEntity owner,
NavigationalMemory.NavigationalMemoryKey key)
{
Mode = key.Mode;
SourceNodeIndex = key.SourceNodeIndex;
DestinationNodeIndex = key.DestinationNodeIndex;
Vector2 position =
owner.PathPlanner.GetNodePosition(key.DestinationNodeIndex);
RunningAverageTimeTaken =
Vector2.Distance(owner.Position, position)/
owner.MaxSpeed*3.0f; //200% margin //TODO: make parameter
//switch (key.Mode)
//{
// case NavigationalMemory.TravelModes.FollowPath:
// break;
// case NavigationalMemory.TravelModes.SeekToPosition:
// break;
// case NavigationalMemory.TravelModes.TraverseEdge:
// break;
//}
}
///<summary>
///constructor
///</summary>
///<param name="graph"></param>
///<param name="source"></param>
///<param name="target"></param>
///<param name="bot">Bot Requesting the path</param>
public GraphSearchAStarTimeSliced(
SparseGraph graph,
int source,
int target,
BotEntity bot)
: base(SearchTypes.AStar, bot)
{
_graph = graph;
_shortestPathTree = new List<NavGraphEdge>(graph.NumNodes);
_searchFrontier = new List<NavGraphEdge>(graph.NumNodes);
_gCosts = new List<float>(graph.NumNodes);
_fCosts = new List<float>(graph.NumNodes);
for (int i = 0; i < graph.NumNodes; i++)
{
ShortestPathTree.Add(null);
SearchFrontier.Add(null);
GCosts.Add(0);
FCosts.Add(0);
}
_source = source;
_target = target;
//create the priority queue
_pq = new IndexedPriorityQueueLow(FCosts, Graph.NumNodes);
//put the source node on the queue
PQ.Insert(source);
}
//returns a score between 0 and 1 representing the desirability of the
//strategy the concrete subclass represents
public override float CalculateDesirability(BotEntity bot)
{
float desirability = 0.0f;
//only do the calculation if there is a target present
if (bot.TargetingSystem.IsTargetPresent)
{
float tweaker =
GameManager.GameManager.Instance.Parameters.BotAggroGoalTweaker;
int teammatesTargetingBot = bot.SensoryMemory.GetListOfRecentlySensedTeammates().FindAll(delegate(BotEntity teammate) { return teammate.TargetBot == bot.TargetBot; }).Count;
const int maxBotsForMaxDesirability = 16;
//f(x) = max((16 + 1) - (x-16)^2/16, 0)
//in effect x=0 [no bots targeting the bot] means f(x) = 1
//x = 16, f(x) = 17
//x = 32, f(x) = 1
//x = 33, f(x) = 0
float teammatesTargetingBotMultiplier = (float)Math.Max(
(maxBotsForMaxDesirability + 1) - Math.Pow(teammatesTargetingBot - maxBotsForMaxDesirability, 2) / maxBotsForMaxDesirability,
1.0f);
desirability = tweaker*
bot.HealthPercentage*
Feature.TotalWeaponStrength(bot)*
teammatesTargetingBotMultiplier;
//bias the value according to the personality of the bot
desirability *= _characterBias;
}
return desirability;
}
public Formation(FormationType Type, BotEntity Lead, uint Pos, List<BotEntity> members)
{
_formationType = Type;
_leader = Lead;
_position = Pos;
_members = members;
}
//returns a score between 0 and 1 representing the desirability of the
//strategy the concrete subclass represents
public override float CalculateDesirability(BotEntity bot)
{
//first grab the distance to the closest instance of a health item
float distance = Feature.DistanceToItem(bot, ItemTypes.Health);
//if the distance feature is rated with a value of 1 it means that the
//item is either not present on the map or too far away to be worth
//considering, therefore the desirability is zero
if (distance == 1)
{
return 0;
}
//the desirability of finding a health item is proportional to the amount
//of health remaining and inversely proportional to the distance from the
//nearest instance of a health item.
float desirability =
GameManager.GameManager.Instance.Parameters.BotHealthGoalTweaker*
(1 - bot.HealthPercentage)/
(Feature.DistanceToItem(bot, ItemTypes.Health));
//ensure the value is in the range 0 to 1
desirability = MathHelper.Clamp(desirability, 0, 1);
//bias the value according to the personality of the bot
desirability *= _characterBias;
return desirability;
}
///<summary>
///Base goal constructor
///</summary>
///<param name="bot"></param>
///<param name="goalType"></param>
protected Goal(BotEntity bot, GoalTypes goalType)
{
_bot = bot;
_goalType = goalType;
_status = StatusTypes.Inactive;
_logPrefixText = String.Format("[{0,-8}] [{1,17}.", Bot.Name, goalType);
}
///<summary>
///steering behavior constructor
///</summary>
///<param name="agent"></param>
public Steering(BotEntity agent)
{
_bot = agent;
Flags = 0;
_weightSeparation = GameManager.GameManager.Instance.Parameters.SeparationWeight;
_weightWander = GameManager.GameManager.Instance.Parameters.WanderWeight;
_weightWallAvoidance = GameManager.GameManager.Instance.Parameters.WallAvoidanceWeight;
_viewDistance = GameManager.GameManager.Instance.Parameters.ViewDistance;
_wallDetectionFeelerLength = GameManager.GameManager.Instance.Parameters.WallDetectionFeelerLength;
Feelers = new List<Vector2>(3);
_deceleration = Decelerations.Normal;
TargetAgent1 = null;
TargetAgent2 = null;
_wanderDistance = WANDER_DIST;
_wanderJitter = WANDER_JITTER_PER_SEC;
_wanderRadius = WANDER_RAD;
_weightSeek = GameManager.GameManager.Instance.Parameters.SeekWeight;
_weightArrive = GameManager.GameManager.Instance.Parameters.ArriveWeight;
CellSpaceIsOn = true;
SummingMethod = SummingMethods.Prioritized;
//stuff for the wander behavior
float theta = RandomUtil.RandomFloat()*(float) Math.PI*2.0f;
//create a vector to a target position on the wander circle
WanderTarget = new Vector2(WanderRadius*(float) Math.Cos(theta),
WanderRadius*(float) Math.Sin(theta));
}
public Formation(Formation cloner)
{
_formationType = cloner.FormationType;
_leader = cloner.Leader;
_position = cloner.Position;
_members = cloner.Members;
}
///<summary>
///constructor for composite goal GetItem
///</summary>
///<param name="bot">bot entity that owns this goal</param>
///<param name="itemToGet">item to get</param>
public GetItem(BotEntity bot, ItemTypes itemToGet)
: base(bot, ItemTypeToGoalType(itemToGet))
{
_itemToGet = itemToGet;
_giverTrigger = null;
_logItemToGetText =
String.Format(" Item: [{0,-12}]",
EnumUtil.GetDescription(_itemToGet));
}
//returns a score between 0 and 1 representing the desirability of the
//strategy the concrete subclass represents
public override float CalculateDesirability(BotEntity bot)
{
//grab the distance to the closest instance of the weapon type
float distance = Feature.DistanceToItem(bot, Entity.Entity.WeaponTypeToItemType(_weaponType));
//Added by Morteza
//If the number of rounds we have is less then maximum, instead of picking up another weapon then,
//Lets grab ammo for the weapon we have
if (bot.WeaponSystem.CurrentWeapon.NumRoundsRemaining < bot.WeaponSystem.CurrentWeapon.MaxRoundsCarried)
{
if (Feature.DistanceToItem(bot, Entity.Entity.WeaponTypeToItemType(_weaponType)) != 1)
{
return 1;
}
}
//if the distance feature is rated with a value of 1 it means that the
//item is either not present on the map or too far away to be worth
//considering, therefore the desirability is zero
if (distance == 1)
{
return 0;
}
//value used to tweak the desirability
float tweaker;
switch (_weaponType)
{
case WeaponTypes.Railgun:
tweaker =
GameManager.GameManager.Instance.Parameters.BotRailgunGoalTweaker;
break;
case WeaponTypes.RocketLauncher:
tweaker =
GameManager.GameManager.Instance.Parameters.BotRocketLauncherGoalTweaker;
break;
case WeaponTypes.Shotgun:
tweaker =
GameManager.GameManager.Instance.Parameters.BotShotgunGoalTweaker;
break;
default:
tweaker = 1.0f;
break;
}
float health = bot.HealthPercentage;
float weaponStrength = Feature.IndividualWeaponStrength(bot, _weaponType);
float desirability = (tweaker * health * (1 - weaponStrength) * bot.WeaponSystem.CurrentWeapon.PercentageRoundsLeft) / distance;
//ensure the value is in the range 0 to 1
desirability = MathHelper.Clamp(desirability, 0, 1);
desirability *= _characterBias;
return desirability;
}
public override void RenderInfo(Vector2 position, BotEntity bot)
{
TextUtil.DrawText(position, "H: " + CalculateDesirability(bot).ToString("F2"));
return;
//string s =
// (1 - Feature.Health(bot)).ToString("F2") +
// ", " +
// Feature.DistanceToItem(bot, ItemTypes.Health).ToString("F2");
//TextUtil.DrawText(position + new Vector2(0, 15), s);
}
public override void RenderInfo(Vector2 position, BotEntity bot)
{
TextUtil.DrawText(position, "AT: " + CalculateDesirability(bot).ToString("F2"));
return;
//string s =
// Feature.Health(bot)).ToString("F2") +
// ", " +
// Feature.TotalWeaponStrength(bot).ToString("F2");
//TextUtil.DrawText(position+Vector2(0,12), s);
}
//returns a value between 0 and 1 based on how much ammo the bot has for
//the given weapon, and the maximum amount of ammo the bot can carry. The
//closer the amount carried is to the max amount, the higher the score
public static float IndividualWeaponStrength(BotEntity bot, WeaponTypes weaponType)
{
//grab a pointer to the gun (if the bot owns an instance)
Weapon wp = bot.WeaponSystem.GetWeaponFromInventory(weaponType);
if (wp != null)
{
return wp.NumRoundsRemaining/
GetMaxRoundsBotCanCarryForWeapon(weaponType);
}
return 0.0f;
}
///<summary>
///constructor
///</summary>
///<param name="owner"></param>
public WeaponBlaster(BotEntity owner)
: base(WeaponTypes.Blaster,
GameManager.GameManager.Instance.Parameters.BlasterDefaultRounds,
GameManager.GameManager.Instance.Parameters.BlasterMaxRoundsCarried,
GameManager.GameManager.Instance.Parameters.BlasterFiringFreq,
GameManager.GameManager.Instance.Parameters.BlasterIdealRange,
GameManager.GameManager.Instance.Parameters.BlasterMaxSpeed,
owner)
{
//setup the fuzzy module
InitializeFuzzyModule();
}
///<summary>
///constructor
///</summary>
///<param name="owner"></param>
///<param name="reactionTime"></param>
///<param name="aimAccuracy"></param>
///<param name="aimPersistence"></param>
public WeaponSystem(
BotEntity owner,
float reactionTime,
float aimAccuracy,
float aimPersistence)
{
_owner = owner;
_reactionTime = reactionTime;
_aimAccuracy = aimAccuracy;
_aimPersistence = aimPersistence;
Initialize();
}
///<summary>
///when this is called the trigger determines if the entity is within
///the trigger's region of influence. If it is then the trigger will be
///triggered and the appropriate action will be taken.
///</summary>
///<param name="bot">entity activating the trigger</param>
public override void Try(BotEntity bot)
{
if (!IsActive ||
!IsTouchingTrigger(bot.Position, bot.BoundingRadius))
return;
TriggeringBot = bot;
bot.IncreaseHealth(HealthGiven);
Deactivate();
}
///<summary>
///constructor
///</summary>
///<param name="owner"></param>
public WeaponRailgun(BotEntity owner)
: base(WeaponTypes.Railgun,
GameManager.GameManager.Instance.Parameters.RailgunDefaultRounds,
GameManager.GameManager.Instance.Parameters.RailgunMaxRoundsCarried,
GameManager.GameManager.Instance.Parameters.RailgunFiringFreq,
GameManager.GameManager.Instance.Parameters.RailgunIdealRange,
GameManager.GameManager.Instance.Parameters.SlugMaxSpeed,
owner)
{
//setup the fuzzy module
InitializeFuzzyModule();
}
///<summary>
///Constructor for composite goal FollowPath
///</summary>
///<param name="bot">Bot entity that owns this goal</param>
///<param name="path">path to follow</param>
public FollowPath(BotEntity bot, List<PathEdge> path)
: base(bot, GoalTypes.FollowPath)
{
_path = path;
_sourceNodeIndex =
bot.PathPlanner.GetClosestNodeToPosition(path[0].Source);
_destinationNodeIndex =
bot.PathPlanner.GetClosestNodeToPosition(
path[path.Count - 1].Destination);
_usedLookup = Bot.CalculateTimeToReachPosition(
path[path.Count - 1].Destination, out _timeExpected);
_startTime = Time.TimeNow;
}
///<summary>
///constructor for atomic goal SeekToPosition
///</summary>
///<param name="bot">bot entity that owns this goal</param>
///<param name="destination">destination</param>
public SeekToPosition(BotEntity bot, Vector2 destination)
: base(bot, GoalTypes.SeekToPosition)
{
_destination = destination;
_timeExpected = 0.0f;
_sourceNodeIndex =
bot.PathPlanner.GetClosestNodeToPosition(
bot.Position);
_destinationNodeIndex =
bot.PathPlanner.GetClosestNodeToPosition(
destination);
}
///<summary>
///when triggered this adds the bot that made the sound to the
///triggering bot's perception by sending a message to be processed by
///the triggering bot's sensory memory.
///</summary>
///<param name="bot"></param>
public override void Try(BotEntity bot)
{
//is this bot within range of this sound
if (!IsTouchingTrigger(bot.Position, bot.BoundingRadius))
return;
TriggeringBot = bot;
MessageDispatcher.Instance.DispatchMsg(
(int) MessageDispatcher.SEND_MSG_IMMEDIATELY,
MessageDispatcher.SENDER_ID_IRRELEVANT,
bot.ObjectId,
MessageTypes.GunshotSound,
SoundSource);
}
///<summary>
///constructor
///</summary>
///<param name="owner"></param>
public WeaponShotgun(BotEntity owner)
: base(WeaponTypes.Shotgun,
GameManager.GameManager.Instance.Parameters.ShotgunDefaultRounds,
GameManager.GameManager.Instance.Parameters.ShotgunMaxRoundsCarried,
GameManager.GameManager.Instance.Parameters.ShotgunFiringFreq,
GameManager.GameManager.Instance.Parameters.ShotgunIdealRange,
GameManager.GameManager.Instance.Parameters.PelletMaxSpeed,
owner)
{
_numBallsInShell =
GameManager.GameManager.Instance.Parameters.ShotgunNumBallsInShell;
_spread = GameManager.GameManager.Instance.Parameters.ShotgunSpread;
//setup the fuzzy module
InitializeFuzzyModule();
}
///<summary>
///constructor for atomic goal TraverseEdge
///</summary>
///<param name="bot">bot entity that owns this goal</param>
///<param name="edgeToFollow">edge to follow</param>
///<param name="lastEdgeInPath">true if last edge in path</param>
public TraverseEdge(
BotEntity bot,
PathEdge edgeToFollow,
bool lastEdgeInPath)
: base(bot, GoalTypes.TraverseEdge)
{
_edgeToFollow = edgeToFollow;
_timeExpected = 0.0f;
_lastEdgeInPath = lastEdgeInPath;
_sourceNodeIndex =
bot.PathPlanner.GetClosestNodeToPosition(
edgeToFollow.Source);
_destinationNodeIndex =
bot.PathPlanner.GetClosestNodeToPosition(
edgeToFollow.Destination);
}
///<summary>
///constructor
///</summary>
///<param name="shooter"></param>
///<param name="target"></param>
///<param name="entitySceneObject"></param>
public ProjectileBolt(
BotEntity shooter,
Vector2 target,
IEntitySceneObject entitySceneObject)
: base(entitySceneObject,
target,
shooter.ObjectId,
shooter.Position,
Vector2.Normalize(target - shooter.Position),
(int) GameManager.GameManager.Instance.Parameters.BoltDamage,
GameManager.GameManager.Instance.Parameters.BotScale,
GameManager.GameManager.Instance.Parameters.BoltMaxSpeed,
GameManager.GameManager.Instance.Parameters.BoltMass,
GameManager.GameManager.Instance.Parameters.BoltMaxForce)
{
_previousPosition = Position;
}
///<summary>
///Constructor for Think composite goal. If <paramref name="emptyBrain"/>
///is false, loads 'brain' with default evaluators and random biases.
///Otherwise, caller must manually add evaluators and biases.
///</summary>
///<param name="bot">Bot that owns this goal</param>
///<param name="emptyBrain">if false, don't add evaluators</param>
public Think(BotEntity bot, bool emptyBrain)
: base(bot, GoalTypes.Think)
{
if (emptyBrain)
return;
//these biases could be loaded in from a script on a per bot basis
//but for now we'll just give them some random values
const float lowRangeOfBias = 0.5f;
const float highRangeOfBias = 1.5f;
float healthBias =
TorqueUtil.GetRandomFloat(lowRangeOfBias, highRangeOfBias);
float exploreBias =
TorqueUtil.GetRandomFloat(lowRangeOfBias, highRangeOfBias);
float attackBias =
TorqueUtil.GetRandomFloat(lowRangeOfBias, highRangeOfBias);
//float evadeBias =
// TorqueUtil.GetRandomFloat(lowRangeOfBias, highRangeOfBias);
float shotgunBias =
TorqueUtil.GetRandomFloat(lowRangeOfBias, highRangeOfBias);
float rocketLauncherBias =
TorqueUtil.GetRandomFloat(lowRangeOfBias, highRangeOfBias);
float railgunBias =
TorqueUtil.GetRandomFloat(lowRangeOfBias, highRangeOfBias);
//create the evaluator objects
if(GameManager.GameManager.Instance.Parameters.PlayCaptureTheFlag)
{
float flagBias =
TorqueUtil.GetRandomFloat(lowRangeOfBias, highRangeOfBias);
_evaluators.Add(new EvaluatorCaptureFlag(flagBias));
}
_evaluators.Add(new EvaluatorGetHealth(healthBias));
_evaluators.Add(new EvaluatorExplore(exploreBias));
_evaluators.Add(new EvaluatorAttackTarget(attackBias));
//_evaluators.Add(new EvaluatorEvadeBot(evadeBias));
_evaluators.Add(new EvaluatorGetWeapon(shotgunBias,
WeaponTypes.Shotgun));
_evaluators.Add(new EvaluatorGetWeapon(railgunBias,
WeaponTypes.Railgun));
_evaluators.Add(new EvaluatorGetWeapon(rocketLauncherBias,
WeaponTypes.RocketLauncher));
}
///<summary>
///constructor
///</summary>
///<param name="source"></param>
///<param name="range"></param>
public TriggerSoundNotify(BotEntity source, float range)
: base(new EntitySceneObject(),
(int) GameManager.GameManager.Instance.Parameters.BotTriggerUpdateFreq)
{
//TODO: integrate with Torque
//SceneObject.CreateWithCollision = false;
//SceneObject.CreateWithPhysics = false;
_soundSource = source;
//set position and range
Position = SoundSource.Position;
BoundingRadius = range;
//create and set this trigger's region of fluence
AddCircularTriggerRegion(Position, BoundingRadius);
}
//adds the appropriate goal to the given bot's brain
public override void SetGoal(BotEntity bot)
{
bot.Brain.AddGoalExplore();
//GoalComponent gc =
// bc.Components.FindComponent<GoalComponent>();
//if (gc != null)
//{
// if (gc.Goal != null)
// {
// Think t = gc.Goal as Think;
// if (t != null)
// {
// t.AddGoalExplore();
// }
// }
//}
}