public override void Update(GameTime gameTime)
{
Vector3 direction = pathPoints[currentPoint] - pos;
float distance = direction.LengthSquared();
direction.Normalize();
if (distance > 5)
{
spinY = (float)Math.Atan2(direction.X, direction.Z);
pos += direction* 0.55f;
}
else
{
direction = Game1.getInstance().getPlayer().getPos() - pos;
direction.Normalize();
spinY = (float)Math.Atan2(direction.X, direction.Z);
if (lastShot > 2.0f && !dying)
{
//add offset to bullet to position it near the barrell of the tank
Bullet tempBullet = new Bullet(this, pos + (world.Left*3)+(world.Up *5), direction);
tempBullet.LoadContent();
Game1.getInstance().setBullet(tempBullet);
Shoot.Play();
lastShot = 0;
if (currentPoint < (pathPoints.Count - 1))
{
currentPoint++;
}
else
{
currentPoint = 0;
}
}
lastShot += (float)gameTime.ElapsedGameTime.TotalSeconds;
}
//center the bounding sphere on the tanks position
bs.Center = pos + (world.Left * 5);
//check for collisions with bullets
for (int i = 0; i < Game1.getInstance().getNumBullets(); i++)
{
Bullet tempBullet = Game1.getInstance().getBullet(i);
if (collidesWith(tempBullet.getBoundingSphere(), tempBullet.getWorld()) && tempBullet.getCreator() is Player)
{
health--;
Hit.Play();
if (health == 0)
{
EnemyDying.Play();
dying = true;
}
tempBullet.setAlive(false);
}
if (dying)
{
break;
}
}
if (dying)
{
pos -= up * 2;
}
//check for collisions with obstacles
for(int i = 0; i < Game1.getInstance().getNumObstacles(); i++)
{
Obstacle tempObstacle = Game1.getInstance().getObstacle(i);
if (collidesWith(tempObstacle.getBoundingSphere(), tempObstacle.getWorld()))
{
if (currentPoint < (pathPoints.Count - 1))
{
currentPoint++;
}
else
{
currentPoint = 0;
}
}
}
//check for collisions with player
if (collidesWith(Game1.getInstance().getPlayer().getBoundingSphere(), Game1.getInstance().getPlayer().getWorld()))
{
pos -= direction;
}
//each model has a world matrix for scale rotation and translation NB: Translation MUST BE LAST
world = Matrix.CreateScale(1f, 0.2f, 5.5f) * Matrix.CreateRotationY(spinY) * Matrix.CreateTranslation(pos);
}
public override void Update(GameTime gameTime)
{
GamePadState currentState = GamePad.GetState(PlayerIndex.One);
KeyboardState keyState = Keyboard.GetState();
// move camera left and right
if (currentState.ThumbSticks.Right.X < 0 || keyState.IsKeyDown(Keys.Left))
{
yaw(MathHelper.ToRadians(0.5f));
}
if (currentState.ThumbSticks.Right.X > 0 || keyState.IsKeyDown(Keys.Right))
{
yaw(MathHelper.ToRadians(-0.5f));
}
//move camera forward and back
if (currentState.ThumbSticks.Left.Y > 0 || keyState.IsKeyDown(Keys.Up))
{
forward(1);
}
if (currentState.ThumbSticks.Left.Y < 0 || keyState.IsKeyDown(Keys.Down))
{
backward(0.35f);
}
// limit the amount of bullets that can be spawned with last shot
if ((currentState.Triggers.Right >0||keyState.IsKeyDown(Keys.Space)) && lastShot > 0.9)
{
//add offset to the bullet vector3 to center it in the crosshairs
Bullet tempBullet = new Bullet(this, new Vector3(pos.X+0.06f, pos.Y-0.12f, pos.Z-1.5f), look);
//load bullets loadcontent or it wont draw
tempBullet.LoadContent();
Game1.getInstance().setBullet(tempBullet);
lastShot = 0;
Shoot.Play();
}
lastShot += (float)gameTime.ElapsedGameTime.TotalSeconds;
//collision detection stuff
bs.Center = pos;
if (collidesWith(Game1.getInstance().getEnemy().getBoundingSphere(), Game1.getInstance().getEnemy().getWorld()) && Game1.getInstance().getEnemy().isAlive())
{
hitCount++;
}
//check for collisions with bullets
for (int i = 0; i < Game1.getInstance().getNumBullets();i++)
{
Bullet tempBullet = Game1.getInstance().getBullet(i);
if (collidesWith(tempBullet.getBoundingSphere(), tempBullet.getWorld()) && tempBullet.getCreator() is Enemy)
{
GettingHit.Play();
tempBullet.setAlive(false);
hitCount++;
health -=2;
Game1.getInstance().CheckForRumble(gameTime);
if (health <= 0)
{
alive = false;
}
}
}
//check for collisions with obstacles
for (int i = 0; i < Game1.getInstance().getNumObstacles(); i++)
{
Obstacle tempObstacle = Game1.getInstance().getObstacle(i);
if (collidesWith(tempObstacle.getBoundingSphere(), tempObstacle.getWorld()))
{
Crash.Play();
//player cant drive through obstaclesgit
collisionString = "collision: x: " + tempObstacle.getPos().X + " y: " + tempObstacle.getPos().Y + " Z: " + tempObstacle.getPos().Z;
if (currentState.ThumbSticks.Left.Y > 0 || keyState.IsKeyDown(Keys.Up))
{
backward(1.0f);
}
if (currentState.ThumbSticks.Left.Y < 0 || keyState.IsKeyDown(Keys.Down))
{
forward(1);
}
}
}
//end of collision detection
view = Matrix.CreateLookAt(pos, pos + look, up);
world = Matrix.Identity;
//projection is the view space, anything out of this range is not drawn
projection = Matrix.CreatePerspectiveFieldOfView(MathHelper.ToRadians(45.0f), Game1.getInstance().getGraphics().GraphicsDevice.Viewport.AspectRatio, 1.0f, 1000.0f);
}
public void setBullet(Bullet bullet)
{
_bullets.Add(bullet);
}