private void SelectTarget(EnemyShip ship)
{
List <Ship> ships = ship.GameWorld.AllShips;
//int index;// = RandomHelper.Rand() % ships.Count;
//Locate nearest target
Ship targ = null;
float distance = float.PositiveInfinity;
foreach (var item in ships)
{
if (item == ship)
{
continue;
}
var tmpDist = (item.Position - ship.Position).Length();
if (tmpDist < distance)
{
distance = tmpDist;
targ = item;
}
}
//if (ships[index] == ship)
//{
// index++;
// if (index == ships.Count) index = 0;
//}
ship.Target = targ;
}
public override void Exit(object owner)
{
EnemyShip ship = owner as EnemyShip;
if (ship != null)
{
ship.VelocityScalar = 0.0f;
}
}
public override void Enter(object owner)
{
EnemyShip ship = owner as EnemyShip;
if (ship != null)
{
ship.VelocityScalar = 5000.0f;
}
curTime = 0.0;
}
public override void Enter(object owner)
{
EnemyShip ship = owner as EnemyShip;
if (ship != null)
{
ship.VelocityScalar = 5000.0f;
SelectTarget(ship);
}
}
/// <summary>
/// Initalize the game
/// </summary>
protected override void Initialize()
{
base.Initialize();
debug = new DebugDraw(GraphicsDevice);
// Load ship and add to collision manager
Ship ship = new Ship(GraphicsDevice);
ship.WorldBounds = new Vector3(WorldBoundX, 0.0f, WorldBoundZ);
world.SetPlayer(ship);
world.Player.Tag();
// Load enemy ships and add to collision manager
const int numEnemies = 3;
for (int i = 0; i < numEnemies; i++)
{
EnemyShip enemy = new EnemyShip(GraphicsDevice);
// Generate two floats between -1.0f and 1.0f
float randX = RandomHelper.RandFloat();
float randZ = RandomHelper.RandFloat();
enemy.Position = new Vector3(randX * WorldBoundX, 350.0f, randZ * WorldBoundZ);
enemy.WorldBounds = new Vector3(WorldBoundX, 0.0f, WorldBoundZ);
world.AddEnemy(enemy);
}
// Initialise the collidable objects
InitializeCollidableObjects();
// Set camera perspective
float nearPlaneDistance = 100.0f;
float farPlaneDistance = 1000000.0f;
// Create the view and projection matrices
view = Matrix.CreateLookAt(new Vector3(0.0f, 40000.0f, 50.0f),
new Vector3(0.0f, 0.0f, 0.0f),
Vector3.UnitY);
float aspectRatio = (float)graphics.GraphicsDevice.Viewport.Width / graphics.GraphicsDevice.Viewport.Height;
projection = Matrix.CreatePerspectiveFieldOfView(MathHelper.ToRadians(45.0f), aspectRatio, nearPlaneDistance, farPlaneDistance);
InitializeBindings();
}
/// <summary>
/// Initalize the game
/// </summary>
protected override void Initialize()
{
base.Initialize();
debug = new DebugDraw(GraphicsDevice);
// Load ship and add to collision manager
ship = new Ship(GraphicsDevice);
// Load enemy ships and add to collision manager
const int numEnemies = 5;
enemies = new List <EnemyShip>();
Random rand = new Random();
for (int i = 0; i < numEnemies; i++)
{
EnemyShip enemy = new EnemyShip(GraphicsDevice);
// Generate two floats between -1.0f and 1.0f
float randX = (float)(rand.NextDouble() - rand.NextDouble());
float randZ = (float)(rand.NextDouble() - rand.NextDouble());
enemy.Position = new Vector3(randX * 50000.0f, 350.0f, randZ * 50000.0f);
enemies.Add(enemy);
}
// Initialise the collidable objects
InitializeCollidableObjects();
// Set the camera aspect ratio
// This must be done after the class to base.Initalize() which will
// initialize the graphics device.
camera.AspectRatio = (float)graphics.GraphicsDevice.Viewport.Width /
graphics.GraphicsDevice.Viewport.Height;
// Perform an inital reset on the camera so that it starts at the resting
// position. If we don't do this, the camera will start at the origin and
// race across the world to get behind the chased object.
// This is performed here because the aspect ratio is needed by Reset.
UpdateCameraChaseTarget();
camera.Reset();
InitializeBindings();
}
public override void Execute(object owner, GameTime gameTime)
{
EnemyShip ship = owner as EnemyShip;
if (ship == null)
{
return;
}
if (ship.GameWorld.CurrentTagger == null)
{
return;
}
Vector3 taggerPosition = ship.GameWorld.CurrentTagger.Position;
ship.Direction = ship.Position - taggerPosition;
ship.Direction.Normalize();
}
public override void Execute(object owner, GameTime gameTime)
{
EnemyShip ship = owner as EnemyShip;
if (ship == null)
{
return;
}
if (curTime >= directionChangeTime)
{
curTime = 0.0;
ship.SetRandomDirection();
}
else
{
curTime += gameTime.ElapsedGameTime.TotalSeconds;
}
}
public override void Execute(object owner, GameTime gameTime)
{
EnemyShip ship = owner as EnemyShip;
if (ship == null)
{
return;
}
if (ship.Target == null)
{
SelectTarget(ship);
}
if (ship.Target != null)
{
Vector3 targetPosition = ship.Target.Position;
ship.Direction = targetPosition - ship.Position;
ship.Direction.Normalize();
}
}
public void AddEnemy(EnemyShip e)
{
e.GameWorld = this;
enemies.Add(e);
allShips.Add(e);
}
