public void FillPowerup(Powerup pwr, int id)
{
int r = pwr.size / 2;
for (int i = -r; i <= r; i++)
for (int j = -r; j <= r; j++)
if ((i * i) + (j * j) <= r * r)
// disallow snake overriding
if (!pointsHistory.ContainsKey(field[pwr.x + i, pwr.y + j]))
field[pwr.x + i, pwr.y + j] = id;
}
public void AddPowerup(Powerup p)
{
int powerupId = findPowerup(p);
if ((powerupId == -1) || (p.unique == false))
{
PowerupEffects.Start(this, p);
powerups.Add(p);
}
else
powerups[powerupId].expirationTime = p.expirationTime;
}
public static void Start(Snake s, Powerup p)
{
switch (p.effect)
{
case Effects.greenSpeed:
s.speed *= 2;
s.turningSpeed *= 1.5;
break;
case Effects.redSpeed:
s.speed *= 2;
break;
case Effects.greenSlow:
s.speed /= 2;
break;
case Effects.redSlow:
s.speed /= 2;
s.turningSpeed /= 1.5;
break;
case Effects.greenThin:
s.size /= 2;
s.RecreateTrailingPen();
break;
case Effects.redThick:
s.size *= 2;
s.RecreateTrailingPen();
break;
case Effects.greenTurns:
s.turningSpeed *= 1.5;
break;
case Effects.redTurns:
s.turningSpeed /= 1.5;
break;
case Effects.greenRightAngle:
case Effects.redRightAngle:
s.rightAngleTurns = !s.rightAngleTurns;
break;
case Effects.greenInvisibility:
s.isDrawing = false;
break;
case Effects.redInverse:
s.inverse *= -1;
break;
default:
break;
}
}
int findPowerup(Powerup pwr)
{
for (int i = 0; i < powerups.Count; i++)
if (powerups[i].effect == pwr.effect)
return i;
return -1;
}