public void update()
{
position.CenterX = position.CenterX + speed.X;
position.CenterY = position.CenterY + speed.Y;
position.TopOfAutoDrawSet();
foreach (Enemy e in enemies)
{
if (e.getPosition().Collided(position) && position.Visible)
{
e.gotShot(position.Color);
position.Visible = false;
explosions.Add(new Explosion(hero, e));
}
}
foreach (Explosion e in explosions)
{
e.update();
e.interactEnemy(enemies);
}
explosions.RemoveAll(explosion => explosion.isDone());
//if bullet is out off screen or some situation
//bullet . alive = false
// let bullet manager remove it
}
protected override void UpdateWorld()
{
if (GamePad.ButtonBackClicked())
{
Exit();
}
#region change speed by inc/dec time for travelling
mSecondsToTravel += GamePad.ThumbSticks.Right.Y;
if (mSecondsToTravel <= 0f)
{
mSecondsToTravel = 0.1f;
}
#endregion
#region recompute new speed for ball
if (GamePad.ButtonAClicked())
{
ComputeBallSpeed();
mBall.AddToAutoDrawSet();
ResetBallShootInfo();
}
#endregion
#region recompute new velocity direction for ball
if (GamePad.ButtonBClicked())
{
GenerateRandomBallVelocityDirection();
ResetBallShootInfo();
mBall.TopOfAutoDrawSet();
}
#endregion
#region determine if should contiune to draw the ball
if (mBall.IsInAutoDrawSet())
{
Vector2 delta = mBall.Center - kInitPosition;
mDistanceTravelled = delta.Length();
if (mDistanceTravelled > kDistanceCovered)
{
mBall.RemoveFromAutoDrawSet();
}
else
{
mUpdatesSinceShoot++;
}
}
#endregion
EchoToTopStatus("Ball velocity:" + mBall.Velocity + " position:" + mBall.Center);
EchoToBottomStatus("Travel across " + kDistanceCovered + " units in: " + mSecondsToTravel + " seconds"
+ " UpdatesSinceShoot(" + mUpdatesSinceShoot + ")");
}
private void PlotSineCurve()
{
mPlotSet.RemoveAllFromSet();
ComputeFrequencyScale();
for (int x = 0; x < World.WorldDimension.X; x++)
{
float y = mInitPos.Y + GetYValue(x);
XNACS1Circle c = new XNACS1Circle(new Vector2(x, y), 0.2f);
mPlotSet.AddToSet(c);
}
mTravel.TopOfAutoDrawSet();
}
public FunctionPath(Vector2 origin, float w, float h, float xCoverage, float yCoverage)
{
mShowPlots = true;
mPlotBox = new PlotBox(origin, w, h);
mFunctionXCoverage = xCoverage;
mFunctionYCoverage = yCoverage;
mPlotDist = mPlotBox.Width / kNumPlotPoints;
mXTravelDistance = 0f;
mTravel = new XNACS1Circle(Vector2.Zero, kTravelRatio * mPlotDist);
mTravel.Center = mPlotBox.GetBoxPosition(mXTravelDistance, GetYValue(mXTravelDistance));
mTravel.Color = Color.Black;
mConstantSpeed = false;
mPlotSet = new XNACS1PrimitiveSet();
PlotFunction();
mTravel.TopOfAutoDrawSet();
}
protected void PlotFunction()
{
mPlotSet.RemoveAllFromSet();
mPlotDist = mPlotBox.Width / kNumPlotPoints;
for (float xDist = 0f; xDist < mPlotBox.Width; xDist += mPlotDist)
{
float nextY = GetYValue(xDist);
Vector2 p = mPlotBox.GetBoxPosition(xDist, nextY);
XNACS1Circle c = new XNACS1Circle(p, kPlotPtRatio * mPlotDist);
if (mPlotBox.Collided(c))
{
mPlotSet.AddToSet(c);
}
else
{
c.RemoveFromAutoDrawSet();
}
}
mTravel.TopOfAutoDrawSet();
if (!mShowPlots)
{
mPlotSet.RemoveAllFromAutoDrawSet();
}
}