/// <summary>
/// If Ship s does not exist in ships adds it. If the id already exists
/// in ships, updates reference in ships to s.
/// </summary>
public void AddShip(Ship ship)
{
// if the ship is null then do nothing
if (ship == null)
{
return;
}
// if the ship is dead then remove it from the world
if (!ship.IsAlive())
{
aliveShips.Remove(ship.GetID());
}
// if the ship is in the world then replace the old ship with the passed in ship
else if (aliveShips.ContainsKey(ship.GetID()))
{
aliveShips[ship.GetID()] = ship;
}
// if the ship is not in the world then add it
else
{
aliveShips.Add(ship.GetID(), ship);
}
// we have taken care of the alive ships, now lets keep track of all ships
AddAllShips(ship);
}
/// <summary>
/// Acts as a drawing delegate for DrawObjectWithTransform
/// After performing the necessary transformation (translate/rotate)
/// DrawObjectWithTransform will invoke this method
/// </summary>
/// <param name="o">The object to draw</param>
/// <param name="e">The PaintEventArgs to access the graphics</param>
private void ShipDrawer(object o, PaintEventArgs e)
{
Ship ship = o as Ship;
Bitmap shipSprite;
int x, y;
Point p;
x = WorldSpaceToImageSpace(this.Size.Width, (int)ship.GetLocation().GetX() - (SHIP_SIZE.Width / 2));
y = WorldSpaceToImageSpace(this.Size.Width, (int)ship.GetLocation().GetY() - (SHIP_SIZE.Height / 2));
p = new Point(x, y);
if (theWorld.GetMarioMode() && ship.GetID() == theWorld.GetCurrentPlayer())
{
shipSprite = marioShip;
}
else
{
if (ship.GetThrust())
{
shipSprite = shipSpritesThrust[ship.GetID() % shipSprites.Count];
}
else
{
shipSprite = shipSprites[ship.GetID() % shipSprites.Count];
}
}
e.Graphics.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias;
e.Graphics.DrawImage(shipSprite, p);
}
/// <summary>
/// This method "kills" a ship and adds it to a list to respawn.
/// </summary>
/// <param name="ship"></param>
public void KillShip(Ship ship)
{
lock (shipDictionary)
{
this.RemoveShip(ship.GetID());
ship.Died();
deadShipDictionary.Add(ship.GetID(), ship);
}
}
/// <summary>
/// When a ship is added to the game we update the info or add it
/// to the world
/// </summary>
private void AddAllShips(Ship ship)
{
// if the ship is in the world, update its reference
if (allShips.ContainsKey(ship.GetID()))
{
allShips[ship.GetID()] = ship;
}
// if the ship is not in the world then add it
else
{
allShips.Add(ship.GetID(), ship);
}
}
/// <summary>
/// Helper method that helps to draw the ship. Picks the correct sprite for current ship.
/// </summary>
/// <param name="s">a ship object</param>
/// <returns>the corresponding Image sprite</returns>
private Image DrawShip(Ship s)
{
// if coasting, return coasting
if (!s.IsThrusting())
{
// retrieve image from CoastingShips image dictionary
return(CoastingShips[s.GetID() % 8]);
}
// else, return thrusting
else
{
// retrieve image from CoastingShips image dictionary
return(ThrustingShips[s.GetID() % 8]);
}
}
private void hpDrawer(object o, PaintEventArgs e)
{
Ship s = o as Ship;
int hpWidth = 8;
DrawHP(s.GetID() % 8, hpWidth, e);
}
/// <summary>
/// Acts as a drawing delegate for DrawObjectWithTransform
/// After performing the necessary transformation (translate/rotate)
/// DrawObjectWithTransform will invoke this method
/// </summary>
/// <param name="o">The object to draw</param>
/// <param name="e">The PaintEventArgs to access the graphics</param>
private void ShipDrawer(object o, PaintEventArgs e)
{
Ship p = o as Ship;
int shipWidth = 35;
if (p.GetHealth() == 0)
{
e.Graphics.DrawImage(dead_ship, -(shipWidth / 2), -(shipWidth / 2), shipWidth, shipWidth); return;
}
if (p.isThrustOn())
{
e.Graphics.DrawImage(shipImagesThrust[p.GetID() % 8], -(shipWidth / 2), -(shipWidth / 2), shipWidth, shipWidth);
}
else
{
e.Graphics.DrawImage(shipImagesCoast[p.GetID() % 8], -(shipWidth / 2), -(shipWidth / 2), shipWidth, shipWidth);
}
}
/// <summary>
/// Detects whether or not a ship is hit by a projectile
/// </summary>
private void CollisionWithAProjectile(Ship ship, Projectile projectile)
{
if (ship.GetID() != projectile.GetOwner() && ship.IsAlive())
{
if (WithinARadius(ship.GetLocation(), projectile.GetLocation(), shipSize))
{
// the passed in ship was hit by a projectile so we update health and remove
// the projectile from the world
HitAProjectile(ship, projectile);
}
}
}
/// <summary>
/// Returns true if ship and projectile are within collision distance, otherwise false.
/// </summary>
/// <param name="ship"></param>
/// <param name="proj"></param>
/// <returns></returns>
public bool HasCollidedShipProj(Ship ship, Projectile proj)
{
Vector2D shipLoc = ship.GetLocation();
Vector2D projLoc = proj.GetLocation();
Vector2D distanceVector = shipLoc - projLoc;
double distanceLength = distanceVector.Length();
if (distanceLength <= ShipSize && (ship.GetID() != proj.GetOwner()))
{
return(true);
}
return(false);
}
/// <summary>
/// Spawns a ship using the properties of an existing ship. Used for respawning existing ships which have been killed. Spawn location is randomized.
/// </summary>
/// <param name="ship">ship to be respawned</param>
public void RespawnShip(Ship ship)
{
Vector2D newLoc = new Vector2D(rand.Next(-worldSize / 2, worldSize / 2), rand.Next(-worldSize / 2, worldSize / 2));
Vector2D newOrient = new Vector2D(0, -1);
Ship newShip = new Ship(ship.GetID(), newLoc, newOrient, false, ship.GetName(), ShipHealth, ship.GetScore());
// Set ship's modifiable variables
newShip.setAccelRate(ShipAccel);
newShip.SetRespawnDelay(ShipRespawnRate);
newShip.SetFireDelay(FireDelay);
newShip.setWorldSize(this.worldSize);
this.addShip(newShip);
}
/// <summary>
/// This method will either add a new ship to the world, or update
/// a current ship with a new ship depending on the ship's ID.
/// </summary>
/// <param name="newShip"></param>
public void addShip(Ship newShip)
{
int shipId = newShip.GetID();
lock (shipDictionary)
{
if (shipDictionary.ContainsKey(shipId))
{
shipDictionary.Remove(shipId);
shipDictionary.Add(shipId, newShip);
}
else
{
shipDictionary.Add(shipId, newShip);
}
}
}
/// <summary>
/// Creates a projectile with the same location and orientation of the ship which fired it, and adds it to the world. Then tells the ship that is projectile has been fired.
/// </summary>
/// <param name="currentShip">ship which fired this projectile</param>
public void SpawnProjectile(Ship currentShip)
{
if (currentShip.ReadyToFire())
{
// Need to adjust spawn location Y-axis
Vector2D projLocation = new Vector2D(currentShip.GetLocation().GetX(), currentShip.GetLocation().GetY());
Vector2D projDir = new Vector2D(currentShip.GetOrientation());
Vector2D projVeloc = new Vector2D(currentShip.GetOrientation().GetX() * ProjVelocity, currentShip.GetOrientation().GetY() * ProjVelocity);
Projectile newProj = new Projectile(projIDs, projLocation, projDir, true, currentShip.GetID()); // May want to shift projectile
newProj.SetVelocity(projVeloc);
this.addProjectile(newProj);
projIDs++;
lock (shipDictionary)
{
this.shipDictionary[currentShip.GetID()].FireProjectile();
}
}
}
public void ReceiveData(SocketState state)
{
StringBuilder sb = state.sb;
JsonSerializerSettings settings = new JsonSerializerSettings
{
MissingMemberHandling = MissingMemberHandling.Error
};
try
{
char[] separator = new char[] { '\n' };
string[] strArray = sb.ToString().Split(separator, StringSplitOptions.RemoveEmptyEntries);
int length = strArray.Length;
if (sb.ToString()[sb.Length - 1] != '\n')
{
length--;
}
List <Ship> list = new List <Ship>();
List <Ship> list2 = new List <Ship>();
for (int i = 0; i < length; i++)
{
string json = strArray[i];
if ((json[0] == '{') && (json[json.Length - 1] == '}'))
{
Ship item = null;
Projectile projectile = null;
Star star = null;
JObject obj1 = JObject.Parse(json);
JToken token = obj1["ship"];
JToken token2 = obj1["proj"];
if (token != null)
{
item = JsonConvert.DeserializeObject <Ship>(json, settings);
}
if (token2 != null)
{
projectile = JsonConvert.DeserializeObject <Projectile>(json, settings);
}
if (obj1["star"] != null)
{
star = JsonConvert.DeserializeObject <Star>(json, settings);
}
World world = this.world;
lock (world)
{
if (item != null)
{
if (this.world.GetShips().ContainsKey(item.GetID()))
{
if (this.world.GetShips()[item.GetID()].Alive && !item.Alive)
{
list2.Add(item);
}
}
else
{
list.Add(item);
}
this.world.GetShips()[item.GetID()] = item;
}
if (projectile != null)
{
if (projectile.IsAlive())
{
this.world.GetProjectiles()[projectile.GetID()] = projectile;
}
else if (this.world.GetProjectiles().ContainsKey(projectile.GetID()))
{
this.world.GetProjectiles().Remove(projectile.GetID());
}
}
if (star != null)
{
this.world.GetStars()[star.GetID()] = star;
}
}
sb.Remove(0, json.Length + 1);
}
}
foreach (Ship ship2 in list2)
{
this.ShipDied(ship2);
}
foreach (Ship ship3 in list)
{
this.NewShip(ship3);
}
this.FrameTick();
}
catch (JsonReaderException)
{
}
catch (Exception)
{
}
state.call_me = new Action <SocketState>(this.ReceiveData);
Networking.RequestMoreData(state);
}
/// <summary>
/// Computes the acceleration, velocity, and position of the passed in ship
/// </summary>
public void MotionForShips(Ship ship)
{
// if the ship isn't alive, just skip it
if (!ship.IsAlive())
{
return;
}
// handle left turn command
if (ship.TurnLeft)
{
ship.GetDirection().Rotate(-turningRate);
ship.TurnLeft = false;
}
// handle right turn command
else if (ship.TurnRight)
{
ship.GetDirection().Rotate(turningRate);
ship.TurnRight = false;
}
// spawn a projectile if projectile command has been given
if (ship.FireProjectile)
{
Projectile p = new Projectile(ship.GetID(), projectileID++, ship.GetLocation(), ship.GetDirection());
AddProjectile(p);
ship.FireProjectile = false;
ship.ResetFireTimer();
// we just fired a projectile, increment total number of fired projectiles
ship.ShotsFired++;
}
//get a zero vector
Vector2D acceleration = new Vector2D(0.0, 0.0);
//compute the acceleration caused by the star
foreach (Star star in stars.Values)
{
Vector2D g = star.GetLocation() - ship.GetLocation();
g.Normalize();
acceleration = acceleration + g * star.GetMass();
}
if (ship.HasThrust())
{
//compute the acceleration due to thrust
Vector2D t = new Vector2D(ship.GetDirection());
t = t * engineStrength;
acceleration = acceleration + t;
}
// recalculate velocity and location
ship.SetVelocity(ship.GetVelocity() + acceleration);
ship.SetLocation(ship.GetVelocity() + ship.GetLocation());
// check to see if ship is off screen
Wraparound(ship);
// check for collisions with any star
foreach (Star star in stars.Values)
{
CollisionWithAStar(ship, star);
}
// check for collisions with any projectiles
foreach (Projectile proj in projectiles.Values)
{
CollisionWithAProjectile(ship, proj);
}
ship.IncrementFireTimer();
}