public EnemyGroup(GraphicsDevice gDevice, Game1 game)
{
moveDirection = MoveDirection.RIGHT;
edgeTouch = EdgeTouch.NONE;
graphicsDevice = gDevice;
this.game = game;
for (int j = 0; j < mEnemyArray.Length; ++j)
{
mEnemyArray[j] = new Enemy[11];
}
for (int j = 0; j < mEnemyArray[0].Length; ++j)
{
mEnemyArray[0][j] = new Enemy(graphicsDevice, game.mPlayerSprite, 0, j, "invader1");
}
for (int j = 1; j < 3; ++j)
{
for (int k = 0; k < mEnemyArray[j].Length; ++k)
{
mEnemyArray[j][k] = new Enemy(graphicsDevice, game.mPlayerSprite, j, k, "invader2");
}
}
for (int j = 3; j < 5; ++j)
{
for (int k = 0; k < mEnemyArray[j].Length; ++k)
{
mEnemyArray[j][k] = new Enemy(graphicsDevice, game.mPlayerSprite, j, k, "invader3");
}
}
}
public void Update(GameTime gameTime)
{
// Update the bullets already fired
foreach (Bullet aBullet in mBullets)
{
aBullet.Update(gameTime);
}
// Shoot new bullets
if (new Random().Next(100) > 75)
{
Enemy enemy = mEnemyArray[new Random().Next(5)][new Random().Next(11)];
if (new Random().Next(100) <= 75)
{
enemy = mEnemyArray[0][new Random().Next(6)];
}
if (enemy != null)
{
ShootBullet(enemy);
}
}
// Basic management of enemies and collision of bullets
List <EnemyCoord> deadEnemies = new List <EnemyCoord>();
bool killed = true;
// Checking the move direction of the enemy group
if (moveDirection == MoveDirection.RIGHT)
{
for (int j = 10; j >= 0; --j)
{
for (int k = 4; k >= 0; --k)
{
if (mEnemyArray[k][j] != null)
{
// Check if touching edge of right screen
if (mEnemyArray[k][j].Position.X + mEnemyArray[k][j].FrameSize > graphicsDevice.Viewport.Width)
{
mEnemyArray[k][j].Position.X = graphicsDevice.Viewport.Width - mEnemyArray[k][j].FrameSize;
edgeTouch = EdgeTouch.RIGHT;
moveDirection = MoveDirection.DOWN;
}
mEnemyArray[k][j].Update(gameTime, moveDirection);
foreach (Bullet bullet in game.mPlayerSprite.mBullets)
{
if (mEnemyArray[k][j].Size.Contains(bullet.Position.X + bullet.FrameSize / 2, bullet.Position.Y))
{
deadEnemies.Add(new EnemyCoord(k, j));
game.mPlayerSprite.mDeadBullets.Add(bullet);
if (mEnemyArray[k][j].ENEMY_ASSETNAME == "invader1")
{
game.score += 30;
}
else if (mEnemyArray[k][j].ENEMY_ASSETNAME == "invader2")
{
game.score += 20;
}
else if (mEnemyArray[k][j].ENEMY_ASSETNAME == "invader3")
{
game.score += 10;
}
}
}
killed = false;
}
}
}
}
else if (moveDirection == MoveDirection.DOWN)
{
for (int j = 10; j >= 0; --j)
{
for (int k = 4; k >= 0; --k)
{
if (mEnemyArray[k][j] != null)
{
// Check if moved one enemy down
if ((int)mEnemyArray[k][j].Position.Y % 8 == 0)
{
// Check if enemy is touching right side of screen
if (edgeTouch == EdgeTouch.RIGHT)
{
moveDirection = MoveDirection.LEFT;
edgeTouch = EdgeTouch.NONE;
}
// Check if enemy is touching left side of screen
else if (edgeTouch == EdgeTouch.LEFT)
{
moveDirection = MoveDirection.RIGHT;
edgeTouch = EdgeTouch.NONE;
}
}
mEnemyArray[k][j].Update(gameTime, moveDirection);
foreach (Bullet bullet in game.mPlayerSprite.mBullets)
{
if (mEnemyArray[k][j].Size.Contains(bullet.Position.X + bullet.FrameSize / 2, bullet.Position.Y))
{
deadEnemies.Add(new EnemyCoord(k, j));
game.mPlayerSprite.mDeadBullets.Add(bullet);
if (mEnemyArray[k][j].ENEMY_ASSETNAME == "invader1")
{
game.score += 30;
}
else if (mEnemyArray[k][j].ENEMY_ASSETNAME == "invader2")
{
game.score += 20;
}
else if (mEnemyArray[k][j].ENEMY_ASSETNAME == "invader3")
{
game.score += 10;
}
}
}
killed = false;
}
}
}
}
else if (moveDirection == MoveDirection.LEFT)
{
for (int j = 0; j < 11; ++j)
{
for (int k = 4; k >= 0; --k)
{
if (mEnemyArray[k][j] != null)
{
// Check if touching edge of left screen
if ((int)mEnemyArray[k][j].Position.X < 0)
{
mEnemyArray[k][j].Position.X = 0;
edgeTouch = EdgeTouch.LEFT;
moveDirection = MoveDirection.DOWN;
}
mEnemyArray[k][j].Update(gameTime, moveDirection);
foreach (Bullet bullet in game.mPlayerSprite.mBullets)
{
if (mEnemyArray[k][j].Size.Contains(bullet.Position.X + bullet.FrameSize / 2, bullet.Position.Y))
{
deadEnemies.Add(new EnemyCoord(k, j));
game.mPlayerSprite.mDeadBullets.Add(bullet);
if (mEnemyArray[k][j].ENEMY_ASSETNAME == "invader1")
{
game.score += 30;
}
else if (mEnemyArray[k][j].ENEMY_ASSETNAME == "invader2")
{
game.score += 20;
}
else if (mEnemyArray[k][j].ENEMY_ASSETNAME == "invader3")
{
game.score += 10;
}
}
}
killed = false;
}
}
}
}
if (killed)
{
game.winState = Game1.WinState.VICTORY;
}
// Remove dead enemies from the enemy array
foreach (EnemyCoord coord in deadEnemies)
{
mEnemyArray[coord.X][coord.Y] = null;
}
// Check if enemy bullets have touched shield
foreach (Bullet bullet in mBullets)
{
foreach (Shield shield in game.mShieldSprites)
{
if (shield.Size.Contains(bullet.Position.X + bullet.FrameSize / 2, bullet.Position.Y))
{
mDeadBullets.Add(bullet);
}
}
// Check if enemy bullets have touched the player
if (game.mPlayerSprite.Size.Contains(bullet.Position.X + bullet.FrameSize / 2, bullet.Position.Y))
{
mDeadBullets.Add(bullet);
game.winState = Game1.WinState.GAME_OVER;
}
}
// Remove bullets that have been hit by the enemy from the player sprite
foreach (Bullet bullet in game.mPlayerSprite.mDeadBullets)
{
game.mPlayerSprite.mBullets.Remove(bullet);
}
// Remove bullets that collided with the shield
foreach (Bullet bullet in mDeadBullets)
{
mBullets.Remove(bullet);
}
}
