// 使用设置好的值计算粒子的随机参数，然后初始化粒子
protected virtual void InitializeParticle(Particle particle, Vector2 where)
{
// 首先确定运动方向
Vector2 direction = PickDirection();
// 确定物理参数
float velocity = Tools.RandomBetween(minInitialSpeed, maxInitialSpeed);
float acceleration = Tools.RandomBetween(minAcceleration, maxAcceleration);
float lifetime = Tools.RandomBetween(minLifetime, maxLifetime);
float scaleX = Tools.RandomBetween(minScaleX, maxScaleX);
float scaleY = Tools.RandomBetween(minScaleY, maxScaleY);
float rotationSpeed = Tools.RandomBetween(minRotationSpeed, maxRotationSpeed);
float rotation = Tools.RandomBetween(minRotationAngle, maxRotationAngle);
// 调用粒子的初始化方法
particle.Initialize(where, velocity * direction, acceleration * direction, lifetime, scaleX, scaleY, rotation, rotationSpeed);
}
protected override void InitializeParticle(Particle particle, Vector2 where)
{
float velocity = Tools.RandomBetween(minInitialSpeed, maxInitialSpeed);
float acceleration = Tools.RandomBetween(minAcceleration, maxAcceleration);
float lifetime = Tools.RandomBetween(minLifetime, maxLifetime);
float scaleX = Tools.RandomBetween(minScaleX, maxScaleX);
float scaleY = Tools.RandomBetween(minScaleY, maxScaleY);
float rotationSpeed = Tools.RandomBetween(minRotationSpeed, maxRotationSpeed);
float rotation = Tools.RandomBetween(minRotationAngle, maxRotationAngle);
Vector2 direction = PickDirection(rotation);
particle.Initialize(where, velocity * direction, acceleration * direction, lifetime, scaleX, scaleY, rotation, rotationSpeed);
}