public void TestShipVelocityWith10000FramesOfThrust()
{
World testWorld = new World();
testWorld.ShipAccel = 0.08;
testWorld.SpawnShip(1, "testname");
Ship testShip = (Ship)testWorld.getPlayers()[1];
double xShipStart = testShip.GetLocation().GetX();
double yShipStart = testShip.GetLocation().GetY();
double xShipVel = testShip.GetVelocity().GetX();
double yShipVel = testShip.GetVelocity().GetY();
double xShip = testShip.GetLocation().GetX();
double yShip = testShip.GetLocation().GetY();
Assert.IsTrue(xShipVel == 0);
Assert.IsTrue(yShipVel == 0);
Assert.IsTrue(xShipStart == xShip);
Assert.IsTrue(yShipStart == yShip);
for (int i = 0; i < 10000; i++)
{
testShip.Thrust();
}
xShipVel = testShip.GetVelocity().GetX();
yShipVel = testShip.GetVelocity().GetY();
Assert.IsTrue(xShipVel == 0);
Assert.AreEqual(yShipVel, 0.08 * -10000, 0.000001);
}
/// <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>
/// Updates the the ships dictionary to contain the given ship
/// </summary>
/// <param name="ship"></param>
public void Update(Ship ship)
{
int id = ship.GetShipID();
if (ship.GetHp() == 0)
{
Ships.Remove(ship.GetShipID());
if (!Explosions.ContainsKey(ship.GetShipID()))
{
Explosions.Add(id, new Explosion(id, ship.GetLocation().GetX(), ship.GetLocation().GetY()));
}
foreach (Ship s in sortedPlayerList)
{
if (s.GetShipID() == ship.GetShipID())
{
s.UpdateShip(ship);
}
}
}
else
{
int oldScore = -1;
if (Explosions.ContainsKey(id) && Explosions[id].Dead)
{
Explosions.Remove(id);
}
bool found = false;
foreach (Ship s in sortedPlayerList)
{
if (s.GetShipID() == ship.GetShipID())
{
found = true;
oldScore = s.GetScore();
s.UpdateShip(ship);
break;
}
}
Ships[id] = ship;
if (!found)
{
sortedPlayerList.Add(Ships[ship.GetShipID()]);
sortedPlayerList.Sort((a, b) => b.GetScore().CompareTo(a.GetScore()));
}
if (found && (ship.GetScore() > oldScore))
{
sortedPlayerList.Sort((a, b) => b.GetScore().CompareTo(a.GetScore()));
}
}
}
//******************** World methods for the collisions ********************//
/// <summary>
/// Checks to see if the passed in ship touched a star
/// </summary>
private void CollisionWithAStar(Ship ship, Star star)
{
if (WithinARadius(ship.GetLocation(), star.GetLocation(), shipSize + starSize))
{
// the passed in ship hit a star so we update the ship's health
HitAStar(ship);
}
}
public void TestProjectileVelocity()
{
World testWorld = new World();
testWorld.SpawnShip(1, "testname");
Ship testShip = (Ship)testWorld.getPlayers()[1];
Assert.IsTrue(testWorld.getProjs().Count == 0);
testWorld.SpawnProjectile(testShip);
Projectile testProj = ((Dictionary <int, Projectile>)testWorld.getProjs())[0];
double xProj = testProj.GetLocation().GetX();
double yProj = testProj.GetLocation().GetY();
double xShip = testShip.GetLocation().GetX();
double yShip = testShip.GetLocation().GetY();
Assert.IsTrue(xProj == xShip);
Assert.IsTrue(yProj == yShip);
testWorld.updateProjectiles();
xProj = testProj.GetLocation().GetX();
yProj = testProj.GetLocation().GetY();
Assert.IsTrue(xProj == xShip);
Assert.IsTrue(yProj == yShip);
testProj.SetVelocity(new Vector2D(1, 2));
testWorld.updateProjectiles();
xProj = testProj.GetLocation().GetX();
yProj = testProj.GetLocation().GetY();
Assert.IsTrue(xProj == xShip + 1);
Assert.IsTrue(yProj == yShip + 2);
}
/// <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>
/// Calculates gravity between a ship and a star.
/// </summary>
/// <returns>a Vector2D gravity</returns>
private Vector2D CalculateForce(Ship ship, Star star)
{
// get direction
Vector2D g = star.GetLocation() - ship.GetLocation();
g.Normalize();
// get magnitude
g *= star.GetSize();
return(g);
}
/// <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>
/// Returns true if ship and star are within collision distance, otherwise false.
/// </summary>
/// <param name="ship"></param>
/// <param name="star"></param>
/// <returns></returns>
public bool HasCollidedShipStar(Ship ship, Star star)
{
Vector2D shipLoc = ship.GetLocation();
Vector2D starLoc = star.GetLocation();
Vector2D distanceVector = shipLoc - starLoc;
double distanceLength = distanceVector.Length();
if (distanceLength <= StarSize)
{
return(true);
}
return(false);
}
public void TestUpdatingShipLocationInWorldWithNewShip()
{
World testWorld = new World();
testWorld.SpawnShip(1, "testName");
Ship firstFrame = (Ship)testWorld.getPlayers()[1];
double xShipFirstFrame = firstFrame.GetLocation().GetX();
double yShipFirstFrame = firstFrame.GetLocation().GetY();
Ship secondFrame = new Ship(1, firstFrame.GetLocation() + firstFrame.GetLocation(), firstFrame.GetOrientation(), false, "testName", 5, 0);
testWorld.addShip(secondFrame);
Assert.IsTrue(testWorld.getPlayers().Count == 1);
Ship sameShip = (Ship)testWorld.getPlayers()[1];
double xShipSecondFrame = sameShip.GetLocation().GetX();
double yShipSecondFrame = sameShip.GetLocation().GetY();
Assert.IsTrue(xShipFirstFrame != xShipSecondFrame);
Assert.IsTrue(yShipFirstFrame != yShipSecondFrame);
}
/// <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 TestShipVelocityWith1FrameOfThrust()
{
World testWorld = new World();
testWorld.ShipAccel = 0.08;
testWorld.SpawnShip(1, "testname");
Ship testShip = (Ship)testWorld.getPlayers()[1];
double xShipStart = testShip.GetLocation().GetX();
double yShipStart = testShip.GetLocation().GetY();
double xShipVel = testShip.GetVelocity().GetX();
double yShipVel = testShip.GetVelocity().GetY();
double xShip = testShip.GetLocation().GetX();
double yShip = testShip.GetLocation().GetY();
Assert.IsTrue(xShipVel == 0);
Assert.IsTrue(yShipVel == 0);
Assert.IsTrue(xShipStart == xShip);
Assert.IsTrue(yShipStart == yShip);
testShip.Thrust();
xShipVel = testShip.GetVelocity().GetX();
yShipVel = testShip.GetVelocity().GetY();
Assert.IsTrue(xShipVel == 0);
Assert.IsTrue(yShipVel == 0.08 * -1);
testWorld.updateShips();
xShip = testShip.GetLocation().GetX();
yShip = testShip.GetLocation().GetY();
Assert.IsTrue(xShipStart + xShipVel == xShip);
Assert.IsTrue(yShipStart + yShipVel == yShip);
}
/// <summary>
/// Checks to see if the passed in ship is on the edge of the world
/// </summary>
private void Wraparound(Ship ship)
{
int borderCoordinate = universeSize / 2;
if (Math.Abs(ship.GetLocation().GetX()) >= borderCoordinate)
{
// times x by -1
double x = ship.GetLocation().GetX() * -1;
double y = ship.GetLocation().GetY();
// set the ship's new location
ship.SetLocation(x, y);
}
if (Math.Abs(ship.GetLocation().GetY()) >= borderCoordinate)
{
// times y by -1
double y = ship.GetLocation().GetY() * -1;
double x = ship.GetLocation().GetX();
// set the ship's new location
ship.SetLocation(x, y);
}
}
/// <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();
}
private bool CollidedWith(Projectile proj, Ship ship)
{
Vector2D distance = proj.GetLocation() - ship.GetLocation();
return(distance.Length() < shipRadius);
}
private bool CollidedWith(Star star, Ship ship)
{
Vector2D distance = star.GetLocation() - ship.GetLocation();
return(distance.Length() < (starRadius + shipRadius));
}