//Wander method.
public void Wander(Map m, Tank t, List<EnemyTanks>others)
{
//If this AI tank is defeated, add its bounding spheres to the list of walls in the map.
if(this.LivesRemaining <= 0)
{
if (!addedToWalls)
{
foreach (BoundingSphere sp in this.Spheres)
{
m.Walls.Add(sp);
}
addedToWalls = true;
}
return;
}
Random rand = new Random();
float rotStep = 1.0f;
//calculate random angle of direction to move in. //Delayed by a counter to avoid jitter.
if (count == 10)
{
//Calculate new angle.
float tempAngle = (float)rand.NextDouble() * (rotStep - (-rotStep)) - rotStep;
ChassisAngle += tempAngle;
updateSpheres();
//Check if new angle conflicts with walls. If so, undo angle.
foreach (BoundingSphere b in m.Walls)
{
for (int i = 0; i < this.Spheres.Count; i++)
{
if (this.Spheres[i].Intersects(b) || this.AvoidanceSphere.Intersects(b))
{
ChassisAngle -= tempAngle;
updateSpheres();
break;
}
}
}
}
// update position
Vector2 newPos = new Vector2((float)Math.Cos((ChassisAngle)) * 1f, (float)Math.Sin((ChassisAngle)) * 1f);
updatePosition(m, newPos, t, others);
//If tank has a target, aim cannon in its direction to fire.
if (this.Target!=null)
{
Vector2 aim = new Vector2(this.Target.Position.X, this.Target.Position.Y) - new Vector2(this.Position.X, this.Position.Y);
if (this.Target.Position.X > this.Position.X && this.Target.Position.Y > this.Position.Y)
{
this.CannonAngle = (float)Math.Atan2(aim.Y, aim.X);
}
else
{
this.CannonAngle = (float)Math.Atan2(aim.Y, aim.X);
}
}
//Else, allign cannon with chassis.
else
{
this.CannonAngle = this.ChassisAngle;
}
//Update bounding spheres and delay counter..
updateSpheres();
count--;
if (count == 0)
{
count = 10;
}
}
//This method updates position.
public void updatePosition(Map m, Vector2 pos, Tank t, List<EnemyTanks> others)
{
Position += pos; //Add new position.
//If new position conflicts with walls, undo the position change.
//Also set off seek delay counter. If tank is seeking player, it will lose sight of them upon collision for a short time.
foreach (BoundingSphere b in m.Walls)
{
for (int i = 0; i < this.Spheres.Count; i++)
{
if (this.Spheres[i].Intersects(b))
{
if (seekCount == 100 && seekCount > 0)
{
seekCount--;
}
this.target = null;
this.Position -= pos;
this.updateSpheres();
break;
}
}
}
//If tank is close enough to player tank, check for collision. If collides, undo position change.
if ((this.Position - t.Position).Length() <= 65)
{
for (int i = 0; i < this.Spheres.Count; i++)
{
for (int j = 0; j < t.Spheres.Count; j++)
{
if (this.Spheres[i].Intersects(t.Spheres[j]))
{
this.Position -= pos;
this.updateSpheres();
break;
}
}
}
}
//If tank is close enough to other AI tanks, check for collision. If collides, undo position change.
foreach (EnemyTanks et in others)
{
if (this.TankColor != et.TankColor)
{
if ((this.Position - et.Position).Length() <= 65)
{
for (int i = 0; i < this.Spheres.Count; i++)
{
for (int j = 0; j < et.Spheres.Count; j++)
{
if (this.Spheres[i].Intersects(et.Spheres[j]))
{
this.Position -= pos;
this.updateSpheres();
break;
}
}
}
}
}
}
//Update seek delay counter.
if (seekCount < 100 && seekCount > 0)
{
seekCount--;
}
if (seekCount == 0)
{
seekCount = 100;
}
}
//Seek method. The AI tank will seek the player until it gets close enough or hits a wall.
public void Seek(Map m, Tank t, List<EnemyTanks> others)
{
//Don't seek if the target is not the player tank.
if (target != t)
{
return;
}
//If seek counter is full, seek player.
if (seekCount == 100)
{
//Update cannon angle.
Vector2 aim = new Vector2(this.Target.Position.X, this.Target.Position.Y) - new Vector2(this.Position.X, this.Position.Y);
if (this.Target.Position.X > this.Position.X && this.Target.Position.Y > this.Position.Y)
{
this.CannonAngle = (float)Math.Atan2(aim.Y, aim.X);
}
else
{
this.CannonAngle = (float)Math.Atan2(aim.Y, aim.X);
}
Vector2 direction = target.Position - Position;
direction.Normalize();
Vector2 newPos = new Vector2((float)Math.Cos((ChassisAngle)) * direction.X, (float)Math.Sin((ChassisAngle)) * direction.Y);
//Chase until close enough to player tank.
if ((this.Position - target.Position).Length() >= 105)
{
this.still = false;
ChassisAngle = CannonAngle;
updateSpheres();
this.updatePosition(m, direction, t, others);
}
//When close enough, stop chasing player.
else
{
this.still = true;
}
}
}
//This method updates the active bullets.
public void update(Map m, Tank t1, List<EnemyTanks> others)
{
for (int i = 0; i < bullets.Count; i++)
{
if (bullets[i] != null)
{
Vector2 direction = bullets[i].Target - bullets[i].Position; //Move in target's direction.
if (direction.Length() <= 1.5) //Don't fire if aimed very close to the firing tank.
{
bullets[i].LifeTime = 0;
}
direction.Normalize();
bullets[i].Position += direction * 2.7f;
bullets[i].LifeTime--;
int x = (int)Math.Floor(bullets[i].Position.X / 20);
int y = (int)Math.Floor(bullets[i].Position.Y / 20);
//If bullet is out of bounds, over a wall tile or out of lifetime(fire range), remove bullet object.
if (x < 0 || x > 63 || y < 0 || y > 35 || m.getTileType(x, y) == 1 || bullets[i].LifeTime < 1)
{
bullets.RemoveAt(i);
i--;
break;
}
if (i >= 0)
{
//If bullet is within range of player tank, if it overlaps wth any of its spheres, remove bullet object.
if ((bullets[i].Position - t1.Position).Length() <= 31 && bullets[i].BulletColor != t1.TankColor)
{
foreach (BoundingSphere s in t1.Spheres)
{
Vector2 spherePos = new Vector2(s.Center.X, s.Center.Y);
if ((bullets[i].Position - spherePos).Length() <= 10)
{
if (t1.LivesRemaining > 0)
{
t1.LivesRemaining--;
}
bullets.RemoveAt(i);
i--;
break;
}
}
}
}
if (i >= 0)
{
foreach (EnemyTanks e in others)
{
if (i >= 0)
{
//If bullet is within range of another AI tank, if it overlaps wth any of its spheres, remove bullet object.
if ((bullets[i].Position - e.Position).Length() <= 31 && bullets[i].BulletColor != e.TankColor)
{
foreach (BoundingSphere s in e.Spheres)
{
Vector2 spherePos = new Vector2(s.Center.X, s.Center.Y);
if ((bullets[i].Position - spherePos).Length() <= 10)
{
if (e.LivesRemaining > 0)
{
e.LivesRemaining--;
}
bullets.RemoveAt(i);
i--;
break;
}
}
}
}
else
{
break;
}
}
}
}
}
}
/// <summary>
/// Allows the game to run logic such as updating the world,
/// checking for collisions, gathering input, and playing audio.
/// </summary>
/// <param name="gameTime">Provides a snapshot of timing values.</param>
protected override void Update(GameTime gameTime)
{
// Allows the game to exit
if (GamePad.GetState(PlayerIndex.One).Buttons.Back == ButtonState.Pressed || Keyboard.GetState().IsKeyDown(Keys.Escape))
this.Exit();
lastKs = ks;
ks = Keyboard.GetState();
Keys[] keys = ks.GetPressedKeys();
lastMs = ms;
ms = Mouse.GetState();
switch (currentGameState)
{
//Display all tutorial messages in succession.
case GameState.Tutorial:
if (ks.IsKeyDown(Keys.Space) && lastKs.IsKeyUp(Keys.Space))
{
switch (currentTutorialState)
{
case TutorialState.Tutorial1:
currentTutorialState = TutorialState.Tutorial2;
break;
case TutorialState.Tutorial2:
currentTutorialState = TutorialState.Tutorial3;
break;
case TutorialState.Tutorial3:
currentTutorialState = TutorialState.Tutorial4;
break;
case TutorialState.Tutorial4:
currentTutorialState = TutorialState.Tutorial5;
break;
case TutorialState.Tutorial5:
currentTutorialState = TutorialState.Tutorial6;
break;
case TutorialState.Tutorial6:
currentGameState = GameState.Play;
break;
}
}
break;
//Main menu state.
case GameState.MainMenu:
if (btnArray[0].isClicked == true)
{
currentGameState = GameState.Tutorial;
MediaPlayer.Stop();
MediaPlayer.Play(gameMusic);
MediaPlayer.IsRepeating = true;
}
else if (btnArray[1].isClicked == true)
{
currentGameState = GameState.Controls;
if (btnBack.isClicked == true)
btnBack.isClicked = false;
}
else if (btnArray[2].isClicked == true)
this.Exit();
btnArray[0].Update(ms);
btnArray[1].Update(ms);
btnArray[2].Update(ms);
break;
case GameState.Controls:
if (btnBack.isClicked == true)
{
currentGameState = GameState.MainMenu;
btnArray[1].isClicked = false;
}
btnBack.Update(ms);
break;
case GameState.Play:
//Resets the tanks and map wall data in case of bugs.
if (resetTanks)
{
m1 = new Map(tiles);
t1 = new Tank(tankTex, new Vector2(80, 60), 3);
ets.Clear();
ets.Add(new EnemyTanks(tankTex, new Vector2(80, 600), 1));
ets.Add(new EnemyTanks(tankTex, new Vector2(1180, 600), 2));
ets[1].ChassisAngle = -90;
ets[1].CannonAngle = -90;
ets.Add(new EnemyTanks(tankTex, new Vector2(1180, 60), 0));
ets[2].ChassisAngle = -180;
ets[2].CannonAngle = -180;
resetTanks = false;
}
//Update particle emitters for enemy tanks (displayed when tanks are defeated).
for (int i = 0; i < 3; i++)
{
explosions[i].Update();
explosions[i].EmitterLocation = ets[i].Position;
}
//If player tank is defeated, switch to game over.
if (t1.livesRemaining <= 0)
{
currentGameState = GameState.Lose;
}
//Updated timers for enemy tanks. and update their frames.
timer0 += (float)gameTime.ElapsedGameTime.TotalMilliseconds;
timer1 += (float)gameTime.ElapsedGameTime.TotalMilliseconds;
timer2 += (float)gameTime.ElapsedGameTime.TotalMilliseconds;
for (int i = 0; i < 3; i++)
{
switch (i)
{
case 0:
if (timer0 > interval && ets[i].LivesRemaining > 0)
{
if (!ets[i].Still)
{
ets[i].CurrentFrame++;
ets[i].updateRectangles();
timer0 = 0f;
}
}
if (ets[i].CurrentFrame == 2 && ets[i].LivesRemaining > 0)
{
if (!ets[i].Still)
{
ets[i].CurrentFrame = 0;
ets[i].updateRectangles();
}
}
break;
case 1:
if (timer1 > interval && ets[i].LivesRemaining > 0)
{
if (!ets[i].Still)
{
ets[i].CurrentFrame++;
ets[i].updateRectangles();
timer1 = 0f;
}
}
if (ets[i].CurrentFrame == 2 && ets[i].LivesRemaining > 0)
{
if (!ets[i].Still)
{
ets[i].CurrentFrame = 0;
ets[i].updateRectangles();
}
}
break;
case 2:
if (timer2 > interval && ets[i].LivesRemaining > 0)
{
if (!ets[i].Still)
{
ets[i].CurrentFrame++;
ets[i].updateRectangles();
timer2 = 0f;
}
}
if (ets[i].CurrentFrame == 2 && ets[i].LivesRemaining > 0)
{
if (!ets[i].Still)
{
ets[i].CurrentFrame = 0;
ets[i].updateRectangles();
}
}
break;
default:
break;
}
//Check if enemy tanks found targets. If one is found, create new bullets to fire.
bool willShoot = ets[i].scan(t1, ets);
if (willShoot)
{
switch (i)
{
case 0:
if (canFire0)
{
bm.createBullet(ets[i].TankColor, ets[i].Position, new Vector2(ets[i].Target.Position.X, ets[i].Target.Position.Y));
canFire0 = false;
cdBar1.cd = 0; //Update cooldownt timer.
}
ets[i].FoundTarget = false;
break;
case 1:
if (canFire1)
{
bm.createBullet(ets[i].TankColor, ets[i].Position, new Vector2(ets[i].Target.Position.X, ets[i].Target.Position.Y));
canFire1 = false;
cdBar2.cd = 0;
}
ets[i].FoundTarget = false;
break;
case 2:
if (canFire2)
{
bm.createBullet(ets[i].TankColor, ets[i].Position, new Vector2(ets[i].Target.Position.X, ets[i].Target.Position.Y));
canFire2 = false;
cdBar3.cd = 0;
}
ets[i].FoundTarget = false;
break;
default:
break;
}
}
//If enemy tank found player, seek player. Else, wander.
if (ets[i].Target != null && ets[i].Target == t1)
{
ets[i].Seek(m1, t1, ets);
}
else
{
ets[i].Wander(m1, t1, ets);
}
}
//Remove mosue visibility (for targeting reticle display)
IsMouseVisible = false;
//Mouse input handler.
if (lastMs.LeftButton == ButtonState.Released && ms.LeftButton == ButtonState.Pressed)
{
if (canPlayerFire)
{
bm.createBullet(t1.TankColor, t1.Position, new Vector2(Mouse.GetState().X, Mouse.GetState().Y));
canPlayerFire = false;
cdBar.cd = 0;
}
}
//Update all cooldown bars.
if (cdBar.cd == 0)
{
while (cdBar.cd < playerFireCount)
cdBar.cd++;
}
else if (cdBar.cd >= playerFireCount)
{
cdBar.cd = playerFireCount;
}
if (cdBar1.cd == 0)
{
while (cdBar1.cd < fireCount0)
cdBar1.cd++;
}
else if (cdBar1.cd >= fireCount0)
{
cdBar1.cd = fireCount0;
}
if (cdBar2.cd == 0)
{
while (cdBar2.cd < fireCount1)
cdBar2.cd++;
}
else if (cdBar2.cd >= fireCount1)
{
cdBar2.cd = fireCount1;
}
if (cdBar3.cd == 0)
{
while (cdBar3.cd < fireCount2)
cdBar3.cd++;
}
else if (cdBar3.cd >= fireCount2)
{
cdBar3.cd = fireCount2;
}
//Input handler.
foreach (Keys key in keys)
{
switch (key)
{
//Forward motion.
case Keys.W:
playerTimer += (float)gameTime.ElapsedGameTime.TotalMilliseconds;
if (playerTimer > interval)
{
//Show the next frame
t1.CurrentFrame++;
t1.updateRectangles();
//Reset the timer
playerTimer = 0f;
}
if (t1.CurrentFrame == 2)
{
t1.CurrentFrame = 0;
t1.updateRectangles();
}
t1.Position += new Vector2((float)Math.Cos((t1.ChassisAngle)) * step, (float)Math.Sin((t1.ChassisAngle)) * step);
t1.updateSpheres();
//Check for collisions with walls after movement. If collides, undo movement.
foreach(BoundingSphere b in m1.Walls)
{
for (int i = 0; i < t1.Spheres.Count; i++)
{
int x = (int)Math.Floor(t1.Spheres[i].Center.X / 20);
int y = (int)Math.Floor(t1.Spheres[i].Center.Y / 20);
if (t1.Spheres[i].Intersects(b))
{
t1.Position -= new Vector2((float)Math.Cos((t1.ChassisAngle)) * step, (float)Math.Sin((t1.ChassisAngle)) * step);
t1.updateSpheres();
break;
}
}
}
//Check for collisions with other tanks after movement. If collides, undo movement.
foreach (EnemyTanks et in ets)
{
if ((t1.Position - et.Position).Length() <= 65)
{
for (int i = 0; i < t1.Spheres.Count; i++)
{
for (int j = 0; j < et.Spheres.Count; j++)
{
if (t1.Spheres[i].Intersects(et.Spheres[j]))
{
t1.Position -= new Vector2((float)Math.Cos((t1.ChassisAngle)) * step, (float)Math.Sin((t1.ChassisAngle)) * step);
t1.updateSpheres();
break;
}
}
}
}
}
break;
//Same procedures as forward motion.
case Keys.S:
playerTimer += (float)gameTime.ElapsedGameTime.TotalMilliseconds;
if (playerTimer > interval)
{
//Show the next frame
t1.CurrentFrame++;
t1.updateRectangles();
//Reset the timer
playerTimer = 0f;
}
if (t1.CurrentFrame == 2)
{
t1.CurrentFrame = 0;
t1.updateRectangles();
}
t1.Position -= new Vector2((float)Math.Cos((t1.ChassisAngle)) * step, (float)Math.Sin((t1.ChassisAngle)) * step);
t1.updateSpheres();
foreach (BoundingSphere b in m1.Walls)
{
for (int i = 0; i < t1.Spheres.Count; i++)
{
if (t1.Spheres[i].Intersects(b))
{
t1.Position += new Vector2((float)Math.Cos((t1.ChassisAngle)) * step, (float)Math.Sin((t1.ChassisAngle)) * step);
t1.updateSpheres();
break;
}
}
}
foreach (EnemyTanks et in ets)
{
if ((t1.Position - et.Position).Length() <= 65)
{
for (int i = 0; i < t1.Spheres.Count; i++)
{
for (int j = 0; j < et.Spheres.Count; j++)
{
if (t1.Spheres[i].Intersects(et.Spheres[j]))
{
t1.Position += new Vector2((float)Math.Cos((t1.ChassisAngle)) * step, (float)Math.Sin((t1.ChassisAngle)) * step);
t1.updateSpheres();
break;
}
}
}
}
}
break;
//A and D keys rotate.
case Keys.A:
t1.ChassisAngle -= 0.03f;
t1.updateRectangles();
t1.updateSpheres();
foreach (BoundingSphere b in m1.Walls)
{
for (int i = 0; i < t1.Spheres.Count; i++)
{
if (t1.Spheres[i].Intersects(b))
{
t1.ChassisAngle += 0.03f;
t1.updateRectangles();
t1.updateSpheres();
break;
}
}
}
foreach (EnemyTanks et in ets)
{
if ((t1.Position - et.Position).Length() <= 65)
{
for (int i = 0; i < t1.Spheres.Count; i++)
{
for (int j = 0; j < et.Spheres.Count; j++)
{
if (t1.Spheres[i].Intersects(et.Spheres[j]))
{
t1.ChassisAngle += 0.03f;
t1.updateSpheres();
break;
}
}
}
}
}
break;
case Keys.D:
t1.ChassisAngle += 0.03f;
t1.updateRectangles();
t1.updateSpheres();
foreach (BoundingSphere b in m1.Walls)
{
for (int i = 0; i < t1.Spheres.Count; i++)
{
if (t1.Spheres[i].Intersects(b))
{
t1.ChassisAngle -= 0.03f;
t1.updateRectangles();
t1.updateSpheres();
break;
}
}
}
foreach (EnemyTanks et in ets)
{
if ((t1.Position - et.Position).Length() <= 65)
{
for (int i = 0; i < t1.Spheres.Count; i++)
{
for (int j = 0; j < et.Spheres.Count; j++)
{
if (t1.Spheres[i].Intersects(et.Spheres[j]))
{
t1.ChassisAngle -= 0.03f;
t1.updateSpheres();
break;
}
}
}
}
}
break;
//Debug controls. Space key displays positions of bounding spheres on tank.
//U key resets the tanks and map wall data.
case Keys.Space:
if (lastKs.IsKeyUp(Keys.Space))
{
Tank.DrawBSPheres = !Tank.DrawBSPheres;
}
break;
case Keys.U:
if (lastKs.IsKeyUp(Keys.U))
{
resetTanks = true;
}
break;
}
}
//Compute player tank's cannon angle based on mouse position.
Vector2 playerAim = new Vector2(Mouse.GetState().X, Mouse.GetState().Y) - new Vector2(t1.Position.X, t1.Position.Y);
if (Mouse.GetState().X > t1.Position.X && Mouse.GetState().Y > t1.Position.Y)
{
t1.CannonAngle = (float)Math.Atan2(playerAim.Y, playerAim.X);
}
else
{
t1.CannonAngle = (float)Math.Atan2(playerAim.Y, playerAim.X);
}
//Update cooldown timers tanks.
if (playerFireCount > 0 && !canPlayerFire)
{
playerFireCount--;
}
else
{
canPlayerFire = true;
playerFireCount = 100;
}
if (fireCount0 > 0 && !canFire0)
{
fireCount0--;
ets[0].Target = null;
}
else
{
canFire0 = true;
fireCount0 = 100;
}
if (fireCount1 > 0 && !canFire1)
{
fireCount1--;
ets[1].Target = null;
}
else
{
canFire1 = true;
fireCount1 = 100;
}
if (fireCount2 > 0 && !canFire2)
{
fireCount2--;
ets[2].Target = null;
}
else
{
canFire2 = true;
fireCount2 = 100;
}
//Update all active bullets.
bm.update(m1, t1, ets);
break;
}
base.Update(gameTime);
}
/// <summary>
/// LoadContent will be called once per game and is the place to load
/// all of your content.
/// </summary>
protected override void LoadContent()
{
// Create a new SpriteBatch, which can be used to draw textures.
spriteBatch = new SpriteBatch(GraphicsDevice);
reticle = Content.Load<Texture2D>("reticle");
tankTex = Content.Load<Texture2D>("tanksheet4");
bullet = Content.Load<Texture2D>("bullet");
tiles = Content.Load<Texture2D>("tiles");
frame = Content.Load<Texture2D>("stwhudframe");
wizard = Content.Load<Texture2D>("wizard");
speechBubble = Content.Load<Texture2D>("bubble");
keyboardKeys = Content.Load<Texture2D>("keyboardcontrols");
pericles20 = Content.Load<SpriteFont>("Pericles20");
pericles16 = Content.Load<SpriteFont>("Pericles16");
GameOver = Content.Load<Texture2D>("gameOver");
winFool = Content.Load<Texture2D>("win");
Tank.texture2 = bullet;
livesOffset = 300;
m1 = new Map(tiles);
t1 = new Tank(tankTex, new Vector2(80, 60), 3);
t1Life = new Tank(tankTex, new Vector2(graphics.PreferredBackBufferWidth / 20, (21 * graphics.PreferredBackBufferHeight / 22)), 3);
ets.Add(new EnemyTanks(tankTex, new Vector2(80, 600), 1));
ets.Add(new EnemyTanks(tankTex, new Vector2(1180, 600), 2));
ets[1].ChassisAngle = -90;
ets[1].CannonAngle = -90;
ets.Add(new EnemyTanks(tankTex, new Vector2(1180, 60), 0));
ets[2].ChassisAngle = -180;
ets[2].CannonAngle = -180;
etLives.Add(new EnemyTanks(tankTex, new Vector2((graphics.PreferredBackBufferWidth / 20) + livesOffset, (21 * graphics.PreferredBackBufferHeight / 22)), 1));
etLives.Add(new EnemyTanks(tankTex, new Vector2((graphics.PreferredBackBufferWidth / 20) + livesOffset * 2, (21 * graphics.PreferredBackBufferHeight / 22)), 2));
etLives.Add(new EnemyTanks(tankTex, new Vector2((graphics.PreferredBackBufferWidth / 20) + livesOffset * 3, (21 * graphics.PreferredBackBufferHeight / 22)), 0));
bm = new BulletManager(bullet);
cdBar = new CoolDownBar(this, 2);
cdBar1 = new CoolDownBar(this, 1);
cdBar2 = new CoolDownBar(this, 3);
cdBar3 = new CoolDownBar(this, 0);
//display the mouse
IsMouseVisible = true;
Viewport viewPort = new Viewport();
viewPort.X = 0;
viewPort.Y = 0;
viewPort.Width = graphics.PreferredBackBufferWidth;
viewPort.Height = graphics.PreferredBackBufferHeight + graphics.PreferredBackBufferHeight / 20;
ctrlsTutorial = new Tutorial(this, Content, viewPort, this.graphics.GraphicsDevice);
ctrlsTutorial.AKeyText = "Move Left";
ctrlsTutorial.WKeyText = "Move Up";
ctrlsTutorial.SKeyText = "Move Down";
ctrlsTutorial.DKeyText = "Move Right";
ctrlsTutorial.LeftMouseClickText = "FIRE!";
ctrlsTutorial.LeftMouseClickText = "FIRE!";
// title
title = Content.Load<Texture2D>("title");
// menu items
btnPlay = new Button(Content.Load<Texture2D>("btnPlay"), graphics.GraphicsDevice);
btnPlay.SetPosition(new Vector2((graphics.PreferredBackBufferWidth / 2) + graphics.PreferredBackBufferWidth / 12, (graphics.PreferredBackBufferHeight / 3)));
btnControls = new Button(Content.Load<Texture2D>("btnControls"), graphics.GraphicsDevice);
btnControls.SetPosition(new Vector2((int)(graphics.PreferredBackBufferWidth / 2) + graphics.PreferredBackBufferWidth / 12, (int)(graphics.PreferredBackBufferHeight / 3) + (int)(graphics.PreferredBackBufferHeight / 6)));
btnExit = new Button(Content.Load<Texture2D>("btnExit"), graphics.GraphicsDevice);
btnExit.SetPosition(new Vector2((int)(graphics.PreferredBackBufferWidth / 2) + graphics.PreferredBackBufferWidth / 12, (int)(graphics.PreferredBackBufferHeight / 3) + (int)(graphics.PreferredBackBufferHeight / 3)));
// controls screen button
btnBack = new Button(Content.Load<Texture2D>("btnBack"), graphics.GraphicsDevice);
btnBack.SetPosition(new Vector2(graphics.PreferredBackBufferWidth / 24, graphics.PreferredBackBufferHeight - ((btnBack.size.Y) + graphics.PreferredBackBufferHeight / 24)));
menuBackground = Content.Load<Texture2D>("castleMenuBack");
controlsBackground = Content.Load<Texture2D>("tankSchem");
hat1 = Content.Load<Texture2D>("hat1");
hat2 = Content.Load<Texture2D>("hat2");
hat3 = Content.Load<Texture2D>("hat3");
//Load textures for the particle effects.
images = new List<Texture2D>();
images.Add(Content.Load<Texture2D>("circle"));
images.Add(Content.Load<Texture2D>("star"));
images.Add(Content.Load<Texture2D>("diamond"));
explosions = new List<ParticleSystem>();
explosions.Add(new ParticleSystem(images, Vector2.Zero, 1, 0));
explosions.Add(new ParticleSystem(images, Vector2.Zero, 3, 0));
explosions.Add(new ParticleSystem(images, Vector2.Zero, 2, 0));
titleMusic = Content.Load<Song>("STW title");
gameMusic = Content.Load<Song>("STW Battle");
MediaPlayer.Play(titleMusic);
MediaPlayer.IsRepeating = true;
// TODO: use this.Content to load your game content here
}