private void SpawnLittleCircle(Rectangle drawRectangleBigCircle)
{
//random x and y
// i>1 because RandomNumberGerator.Next() spawn from 1 to max
// possibility that loop does not work
for (int i = RandomNumberGerator.Next(GameConstants.MAX_COUNT_LITTLE_CIRCLE_AFTER_KILL_BIG_CIRCLE); i >= 1; i--)
{
int randomLocationX = GetRandomLocation(drawRectangleBigCircle.X, 60);
// generate outside window
int randomLocationY = GetRandomLocation(drawRectangleBigCircle.Y, 60);
//random velocity
float speedLittleCircle = GameConstants.SPEED_MIN_LITTLE_CIRCLE_AFTER_KILL_BIG_CIRCLE + RandomNumberGerator.NextFloat(GameConstants.SPEED_RANGE_CIRCLE_AFTER_KILL_BIG_CIRCLE);
float angleLittleCircle = RandomNumberGerator.NextFloat((float)(2 * Math.PI));
// use sin for x and don't use for y
Vector2 velocity = new Vector2(speedLittleCircle * (float)Math.Sin((double)angleLittleCircle), speedLittleCircle);
if (velocity.Y == 0)
{
velocity.Y = velocity.X;
}
if (velocity.Y < 0)
{
velocity.Y *= -1;
}
string spriteName = @"graphics\littleCircle\" + player.ColorEnamy + "LittleCircle";
LittleCircle newLittleCircle = new LittleCircle(Content, spriteName, randomLocationX, randomLocationY, velocity);
littleCircles.Add(newLittleCircle);
}
}
// get random location(int)
private int GetRandomLocation(int min, int range)
{
return(min + RandomNumberGerator.Next(range + 1));
}
