/// <summary>
/// When a ship is hit by a projectile then remove the a health point remove
/// the projectile form the world
/// </summary>
private void HitAProjectile(Ship ship, Projectile projectile)
{
if (kingIsOn)
{
// find the owner of the projectile
int shipID = projectile.GetOwner();
if (allShips.TryGetValue(shipID, out Ship projectileShip))
{
// if the projectile is from the king or the ship is the king then...
if (ship.IsKing() || projectileShip.IsKing())
{
// subtract a health point from the ship
ship.SetHP(ship.GetHP() - 1);
if (!ship.IsAlive())
{
// increase the ship's score who shot the projectile by 1
projectileShip.SetScore(projectileShip.GetScore() + 1);
}
// register that the projectile hit a non-team member
ship.ShotsHit++;
}
if (ship.IsKing() && !ship.IsAlive())
{
// make sure that the ship that died is no longer king
ship.SetKing(false);
ship.SetName(ship.GetName().Substring(5));
// select a new king
Ship newKingShip = RandomShip();
newKingShip.SetKing(true);
newKingShip.SetName("King " + newKingShip.GetName());
}
}
// set the projectile to dead
projectile.Alive(false);
}
else
{
// subtract a health point
ship.SetHP(ship.GetHP() - 1);
if (!ship.IsAlive())
{
// find the owner of the projectile
int shipID = projectile.GetOwner();
allShips.TryGetValue(shipID, out Ship projectileShip);
// increase the ship's score who shot the projectile by 1
projectileShip.SetScore(projectileShip.GetScore() + 1);
}
// set the projectile to dead
projectile.Alive(false);
// register that the projectile hit a ship
ship.ShotsHit++;
}
}
/// <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 ShipInfoDrawer(object o, PaintEventArgs e)
{
Ship p = o as Ship;
int shipWidth = 35;
e.Graphics.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias;
using (Font font1 = new Font("Times New Roman", 16, FontStyle.Bold, GraphicsUnit.Pixel))
using (Pen pen = new Pen(Brushes.White, 2f))
using (SolidBrush rectangleFiller = new SolidBrush(Color.Green))
{
if (p.GetHealth() == 0)
{
return;
}
PointF pointF1 = new PointF(-(shipWidth / 2) + 4, -(shipWidth / 2) - 20);
e.Graphics.DrawString(p.GetName() + " " + p.GetScore(), font1, Brushes.White, pointF1);
Rectangle rec = new Rectangle(-(shipWidth / 2) + 5, -(shipWidth / 2) + 40, 27, 7);
e.Graphics.DrawRectangle(pen, rec);
int length = p.GetHealth() * 5;
Rectangle rec2 = new Rectangle(-(shipWidth / 2) + 6, -(shipWidth / 2) + 41, length, 5);
e.Graphics.FillRectangle(rectangleFiller, rec2);
}
}
/// <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>
/// The passed in ship has hit a star so the health points of the
/// ship must be set to zero
/// </summary>
private void HitAStar(Ship ship)
{
// if king game mode is turned on
if (kingIsOn)
{
if (ship.IsKing())
{
// make sure that the ship that died is no longer king
ship.SetKing(false);
ship.SetName(ship.GetName().Substring(5));
// select a new king
Ship newKingShip = RandomShip();
newKingShip.SetKing(true);
newKingShip.SetName("King " + newKingShip.GetName());
}
}
// kill the ship
ship.SetHP(0);
}
/// <summary>
/// Draws a box in the right hand side of the screen that will display a players name, score, and hp.
/// Count determines where on the screeen the box will be drawn. Each box is 50 pixels high, so the
/// height of each box is 50 times count, where count begins at 0 for the first player
/// </summary>
/// <param name="ship">ship that contains the player information</param>
/// <param name="e">The PaintEventArgs to access the graphics</param>
/// <param name="count">tracks how many player boxes have been drawn</param>
private void PlayerDrawer(PaintEventArgs e, Ship ship, int count)
{
int height = 50 * count; // determines how far down to draw each player box
string name = ship.GetName() + ": " + ship.GetScore().ToString();
using (System.Drawing.SolidBrush whiteBrush = new System.Drawing.SolidBrush(System.Drawing.Color.White))
using (System.Drawing.SolidBrush greenBrush = new System.Drawing.SolidBrush(System.Drawing.Color.Green))
using (System.Drawing.SolidBrush blackBrush = new System.Drawing.SolidBrush(System.Drawing.Color.Black))
{
e.Graphics.DrawString(name, new Font("Arial", 12), blackBrush, 10, 2 + height);
// Rectangles are drawn starting from the top-left corner.
// So if we want the rectangle centered on the player's location, we have to offset it
// by half its size to the left (-width/2) and up (-height/2)
Rectangle r = new Rectangle(5, (20 + height), 188, 20);
Rectangle r2 = new Rectangle(7, (22 + height), 184, 16);
Rectangle r3 = new Rectangle(9, (24 + height), 36 * ship.GetHp(), 12);
e.Graphics.FillRectangle(blackBrush, r);
e.Graphics.FillRectangle(whiteBrush, r2);
e.Graphics.FillRectangle(greenBrush, r3);
}
}