public void Update(GameTime gameTime, bool otherScreenHasFocus,
bool coveredByOtherScreen) {
this.otherScreenHasFocus = otherScreenHasFocus;
if (this._isExiting) {
this._drawableState = Painting.DrawableState.TransitionOff;
if (!this.UpdateTransition(gameTime, this.transitionOffTime, 1)) {
this.drawableScreen.RemoveDrawable(this);
}
} else if (coveredByOtherScreen) {
if (this.UpdateTransition(gameTime, this.transitionOffTime, 1)) {
this._drawableState = Painting.DrawableState.TransitionOff;
} else {
this._drawableState = Painting.DrawableState.Hidden;
}
} else if (this.UpdateTransition(gameTime, this.transitionOnTime, -1)) {
this._drawableState = Painting.DrawableState.TransitionOn;
} else {
this._drawableState = Painting.DrawableState.Active;
}
Update(gameTime);
}
public void Draw(SpriteBatch batch, GameTime gameTime) {
}
public abstract void Update(GameTime elapsedTime);
public abstract void Draw(SpriteBatch batch, GameTime elapsedTime);
private bool UpdateTransition(GameTime gameTime, float time,
int direction) {
float num;
if (time == 0f) {
num = 1f;
} else {
num = (gameTime.GetElapsedGameTime() / time);
}
this._transitionPosition += num * direction;
if (((direction < 0) && (this._transitionPosition <= 0f))
|| ((direction > 0) && (this._transitionPosition >= 1f))) {
this._transitionPosition = MathUtils.Clamp(
this._transitionPosition, 0f, 1f);
return false;
}
return true;
}
public abstract void Update(GameTime gameTime);