/// <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);
// Load fonts
fontAgency = Content.Load <SpriteFont>("AgencyFB");
fontAgency16 = Content.Load <SpriteFont>("AgencyFB16");
fontArial = Content.Load <SpriteFont>("Arial");
// Textures
playerTex = Content.Load <Texture2D>("tank");
player.Texture = playerTex;
player.Position = new Vector2(ResolutionX / 2 - playerTex.Width / 2,
ResolutionY - playerTex.Height - 40);
enemyTex = Content.Load <Texture2D>("alien2");
for (int i = 1; i <= enemies.Count; i++)
{
Enemy enemy = enemies[i - 1];
enemy.Texture = enemyTex;
enemy.Position = new Vector2((ResolutionX / (enemies.Count + 1)) * i - enemyTex.Width / 2,
200 - enemyTex.Height / 2);
enemy.MovePattern = new Vector2[] {
new Vector2(enemy.Position.X - ((ResolutionX / (enemies.Count + 1))
- enemyTex.Width / 2),
enemy.Position.Y),
new Vector2(enemy.Position.X + ((ResolutionX / (enemies.Count + 1)) - enemyTex.Width / 2),
enemy.Position.Y)
};
enemy.MoveSpeed = 1;
}
bunkerTex = Content.Load <Texture2D>("bunker");
for (int i = 1; i <= bunkers.Count; i++)
{
Bunker b = bunkers[i - 1];
b.Texture = bunkerTex;
b.Position = new Vector2((ResolutionX / (bunkers.Count + 1)) * i - bunkerTex.Width / 2,
ResolutionY - bunkerTex.Height - 200);
b.BoundingBox = new BoundingBox(new Vector3(b.Position.X, b.Position.Y + 17, 0),
new Vector3(b.Position.X + b.Texture.Width, b.Position.Y + 31, 0));
}
bunker_hit = new Texture2D[3];
bunker_hit[0] = Content.Load <Texture2D>("bunker_broken03");
bunker_hit[1] = Content.Load <Texture2D>("bunker_broken02");
bunker_hit[2] = Content.Load <Texture2D>("bunker_broken01");
bombTex = Content.Load <Texture2D>("alienbomb");
bulletTex = Content.Load <Texture2D>("playerbullet");
}
/// <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)
{
// PLAYER CONTROLS
if (Keyboard.GetState().IsKeyDown(Keys.Escape))
{
Exit();
}
if (Keyboard.GetState().IsKeyDown(Keys.Left))
{
if (player.Position.X > 4)
{
player.Position.X -= 4;
player.UpdateBoundingBox();
}
}
if (Keyboard.GetState().IsKeyDown(Keys.Right))
{
if (player.Position.X + playerTex.Width < ResolutionX)
{
player.Position.X += 4;
player.UpdateBoundingBox();
}
}
if (Keyboard.GetState().IsKeyDown(Keys.Space))
{
if ((gameTime.TotalGameTime.TotalMilliseconds - playerFireCooldown) > lastFired)
{
FireBullet(player.Position, gameTime);
lastFired = (int)gameTime.TotalGameTime.TotalMilliseconds;
}
}
//----------------------------------------
// ENEMY PROCEDURES
foreach (Enemy enemy in enemies)
{
// Move enemy
if (enemy.Position.X - enemy.MovePattern[enemy.CurrentGoal].X < 0)
{
enemy.Position.X += enemy.MoveSpeed;
enemy.UpdateBoundingBox();
}
else if (enemy.Position.X - enemy.MovePattern[enemy.CurrentGoal].X > 0)
{
enemy.Position.X -= enemy.MoveSpeed;
enemy.UpdateBoundingBox();
}
else //current move goal reached, change move goal
{
if (enemy.CurrentGoal + 1 == enemy.MovePattern.Length)
{
enemy.CurrentGoal = 0;
}
else
{
enemy.CurrentGoal++;
}
}
// Detertime bomb dropping
if (gameTime.TotalGameTime.TotalMilliseconds - enemy.LastDropped > bombDropCooldown)
{
if (random.Next(1, bombDropChance + 1) == bombDropChance)
{
DropBomb(enemy.Position, gameTime);
}
enemy.LastDropped = (int)gameTime.TotalGameTime.TotalMilliseconds;
}
}
//----------------------------------------
// ADVANCE PROJECTILES AND CHECK COLLISIONS
for (int i = 0; i < bullets.Count; i++)
{
Projectile p = bullets[i];
p.Position.Y -= 10;
p.UpdateBoundingBox();
if (p.Position.Y < -(p.Texture.Height))
{
bullets.Remove(p);
continue;
}
// Collision detection
for (int j = 0; j < bunkers.Count; j++)
{
Bunker b = bunkers[j];
if (p.BoundingBox.Intersects(b.BoundingBox))
{
bullets.Remove(p);
b.Health--;
if (b.Health < 0)
{
bunkers.Remove(b);
}
else
{
b.Texture = bunker_hit[b.Health];
}
break;
}
}
for (int k = 0; k < enemies.Count; k++)
{
Enemy enemy = enemies[k];
if (p.BoundingBox.Intersects(enemy.BoundingBox))
{
enemies.Remove(enemy);
bullets.Remove(p);
break;
}
}
}
for (int i = 0; i < bombs.Count; i++)
{
Bomb b = bombs[i];
b.Position.Y += 10;
b.UpdateBoundingBox();
// Collision detection
for (int j = 0; j < bunkers.Count; j++)
{
Bunker bunker = bunkers[j];
if (b.BoundingBox.Intersects(bunker.BoundingBox))
{
bombs.Remove(b);
bunker.Health--;
if (bunker.Health < 0)
{
bunkers.Remove(bunker);
}
else
{
bunker.Texture = bunker_hit[bunker.Health];
}
break;
}
}
if (b.BoundingBox.Intersects(ground.BoundingBox) ||
b.Position.Y > ResolutionY)
{
bombs.Remove(b);
}
}
//----------------------------------------
base.Update(gameTime);
}
