int step = 8; //How many pixels you want the invaders to move
#endregion Fields
#region Constructors
public Enemies(World world)
{
m_enemies = new Enemy[ROWS, COLS];
m_world = world;
for (int r = 0; r < ROWS; r += 1)
for (int c = 0; c < COLS; c += 1)
{
Enemy enemy = null;
Vector2 position = new Vector2(20, 125) + new Vector2(30 * (c + 1), 25 * (r + 1));
switch(r) {
case 0: {
enemy = new Enemy(world, position, new Vector2(28, 20), world.m_texInvadersSheet, m_Enemy3Playing, m_EnemyDying);
enemy.points = 30;
} break;
case 1: {
enemy = new Enemy(world, position, new Vector2(28, 20), world.m_texInvadersSheet, m_Enemy2Playing, m_EnemyDying);
enemy.points = 20;
} break;
case 2: {
enemy = new Enemy(world, position, new Vector2(28, 20), world.m_texInvadersSheet, m_Enemy2Playing, m_EnemyDying);
enemy.points = 20;
} break;
case 3: {
enemy = new Enemy(world, position, new Vector2(28, 20), world.m_texInvadersSheet, m_Enemy1Playing, m_EnemyDying);
enemy.points = 10;
} break;
case 4: {
enemy = new Enemy(world, position, new Vector2(28, 20), world.m_texInvadersSheet, m_Enemy1Playing, m_EnemyDying);
enemy.points = 10;
} break;
}
world.m_entities.Add(enemy);
m_enemies[r, c] = enemy;
}
}
private bool CanShoot(Enemy enemy)
{
throw new NotImplementedException();
}
private void SpawnNewEnemies()
{
if (Utilities.GetTimeDifference(timeOfLastSpawn, true) >= 100)
{
timeOfLastSpawn = DateTime.Now;
for (int i = 0; i < 6; i++)
{
int result = rnd.Next(0, 101);
if (result > 70)
{
Vector2f position = new Vector2f(i * laneWidth + laneWidth * 0.5f, -32);
Vector2f targetPosition = player.Position;
Enemy enemyShip = new Enemy(position, AssetsManager.Textures["enemy"]);
enemyShip.Scale *= 0.5f;
float distx = player.Position.X - enemyShip.Position.X;
float disty = player.Position.Y - enemyShip.Position.Y;
double dist = Math.Sqrt(Math.Pow(distx, 2) + Math.Pow(disty, 2));
double unitX = distx / dist;
double unitY = disty / dist;
enemyShip.DirectionVector = new Vector2f((float)unitX, (float)unitY);
enemyShip.Rotation = (float)(Math.Atan2(-distx, disty) * (180 / Math.PI));
enemies.Add(enemyShip);
}
}
}
}
private void InitlizeEnemies()
{
this.enemies = new List<Enemy>();
int currEnemyXPosition = InitialData.Hud.ScreenWidth / InitialData.UnitData.EnemiesCount;
int currEnemyYPosition = InitialData.UnitData.EnemyHeight;
Enemy currEnemy = null;
// It is used for initialization of the enemies with different sprites
int numberOfEnemiesOnRow = InitialData.UnitData.EnemiesCount / InitialData.UnitData.EnemyPacks;
for (int currEnemyIndex = 1; currEnemyIndex <= InitialData.UnitData.EnemiesCount; currEnemyIndex++)
{
currEnemy = new Enemy(GetEnemySpritePath((currEnemyIndex - 1) / numberOfEnemiesOnRow),
MathHelper.ToRadians(180));
currEnemy.PositionX = currEnemyXPosition;
currEnemy.PositionY = currEnemyYPosition / 5;
currEnemyXPosition = currEnemyXPosition + InitialData.UnitData.EnemyWidth;
if (currEnemyIndex % (InitialData.UnitData.EnemiesCount / InitialData.UnitData.EnemyPacks) == 0)
{
currEnemyYPosition = currEnemyYPosition + InitialData.UnitData.EnemyHeight * 5;
currEnemyXPosition = InitialData.Hud.ScreenWidth / InitialData.UnitData.EnemiesCount;
}
currEnemy.Texture = Content.Load<Texture2D>(currEnemy.SpritePath);
this.enemies.Add(currEnemy);
}
}
private void CheckIfEnemyHit(Enemy enemy)
{
for (int i = projectileList.Count - 1; i >= 0; i--)
{
if (Math.Abs(projectileList[i].Position.Y - enemy.Position.Y) < projectileList[i].Origin.Y + enemy.Origin.Y)
{
if (Math.Abs(projectileList[i].Position.X - enemy.Position.X) < projectileList[i].Origin.X + enemy.Origin.X) // Hit.
{
explosionSound.Play();
player.Points += 10;
AnimatedSprite anim = new AnimatedSprite(new Vector2i(77, 79), AssetsManager.Textures["explosion"], 8, SpriteSheetType.OneRowPerAnimation);
anim.Position = enemy.Position;
explosionList.Add(anim);
projectileList.Remove(projectileList[i]);
enemies.Remove(enemy);
}
}
}
}
