public PlayStageContext(GameStageContext context)
{
this.GameContext = context;
this.Rnd = new Random(context.GetHashCode());
Size vp = context.Target.ViewportSize;
this.ViewportRight = vp.Width - 1;
this.ViewportBottom = vp.Height - 1;
this.AliveAliensCount = AliensPerRow + AliensPerRow;
//create and init aliens
for (int i = 0; i < AliensPerRow; i++)
{
AlienBase la = this.LargeAliens[i] = new AlienLarge();
la.XCenter = 4 + i * 5;
la.YCenter = 5;
AlienBase sa = this.SmallAliens[i] = new AlienSmall();
sa.XCenter = 4 + i * 5;
sa.YCenter = 2;
sa.AlienBelow = la;
}
//create and init bombs
for (int i = 0; i < BombsCount; i++)
{
this.Bombs[i] = new Bomb();
}
}
private void RestartLevel()
{
//init barriers
for (int i = 0; i < BarriersCount; i++)
{
this.Barriers[i].BricksAlive = Barrier.AllBricks;
}
//init aliens
this._aliveAliensCount = AliensPerRow + AliensPerRow;
for (int i = 0; i < AliensPerRow; i++)
{
AlienBase alien = this.LargeAliens[i];
alien.IsAlive = true;
alien.Status = AlienStatus.Walk1;
alien.XCenter = 4 + i * 5;
alien.YCenter = 5;
alien = this.SmallAliens[i];
alien.IsAlive = true;
alien.Status = AlienStatus.Walk1;
alien.XCenter = 4 + i * 5;
alien.YCenter = 2;
}
//reset aliens' speed to the slowest
this._clockMask = 0x0F;
//do init the remaining parameters
this.ResumeLevel();
//shows the current level
this._pausedClock = PausedTimeLong;
this._pauseStage = PauseStage.ShowLevel;
}
public override void OnLoad(CompositionTargetBase target)
{
//create and init the play-stage context
Size vp = target.ViewportSize;
this.ViewportRight = vp.Width - 1;
this.ViewportBottom = vp.Height - 1;
this._rectAlert = new Rectangle(
2,
2,
this.ViewportRight - 4,
this.ViewportBottom - 4);
this.Context.Status = GameStatus.Playing;
//create barriers
for (int i = 0; i < BarriersCount; i++)
{
Barrier barrier = this.Barriers[i] = new Barrier();
barrier.XLeft = 3 + i * 10;
barrier.YTop = 10;
}
//create aliens
for (int i = 0; i < AliensPerRow; i++)
{
AlienBase la = this.LargeAliens[i] = new AlienLarge();
AlienBase sa = this.SmallAliens[i] = new AlienSmall();
sa.AlienBelow = la;
}
//create bombs
for (int i = 0; i < BombsCount; i++)
{
this.Bombs[i] = new Bomb();
}
//collect renderables
int rc = 0;
for (int i = 0; i < BarriersCount; i++)
{
this._renderables[rc++] = this.Barriers[i];
}
this._renderables[rc++] = this.Ship;
this._renderables[rc++] = this.Missile;
this._renderables[rc++] = this.Saucer;
for (int i = 0; i < AliensPerRow; i++)
{
this._renderables[rc++] = this.SmallAliens[i];
this._renderables[rc++] = this.LargeAliens[i];
}
for (int i = 0; i < BombsCount; i++)
{
this._renderables[rc++] = this.Bombs[i];
}
//sets the number of ships available
this.Context.ShipsLeft = 3;
//reset the score
this.Context.CurrentScore = 0;
//reset the level counter
this.Context.CurrentLevel = 1;
this.RestartLevel();
}