Vector2D direction = new Vector2D(); //运动方向
public MissPoint(TextureManager texturemanager, double X, double Y, Vector2D dir, int score = 100)
{
//确定类型
this.Type = Item.Miss_Point;
working = true;
//确定弹射范围
Position.X = X; Position.Y = Y;
if (dir.Y < 0)
{
dir.Y = -dir.Y;
}
if (dir.X >= 0)
{
double rad = dir.GetAngle();
if (rad > 60)
{
rad = 60;
}
direction = new Vector2D(0, 1);
direction.rotate((float)(Datas.LooselyRandom.NextDouble() * (rad - 2 * randDomain) + randDomain));
}
else
{
double rad = dir.GetAngle();
rad = 360 - rad;
if (rad > 60)
{
rad = 60;
}
direction = new Vector2D(0, 1);
direction.rotate(-((float)(Datas.LooselyRandom.NextDouble() * (rad - 2 * randDomain) + randDomain)));
}
speed_right = speed_totle * direction.X;
speed_up = speed_totle * direction.Y;
double offset_x = Center_Distance * direction.X;
double offset_y = Center_Distance * direction.Y;
Position.X += offset_x;
Position.Y += offset_y;
offset_x = Datas.LooselyRandom.NextDouble() * 2 * randFireDomain - randFireDomain;
Position.X += offset_x;
Texture texture = texturemanager.Get("Ef_etama2");
sprite = new Sprite();
sprite.Texture = texture;
sprite.SetHeight(16);
sprite.SetWidth(16);
sprite.SetUVs(14 * per_256, 8 * per_256, 16 * per_256, 10 * per_256);
//保存了MissPoint的一些必要信息
ItemData = new itemdata.MissPoint(score, 3);
}
public override void Update(double elapsedTime)
{
if (!working)
{
if (disposing)
{
if (disposingTime > 0)
{
angle += (float)elapsedTime * 360 * 3;
_alpha = disposingTime / 12.0f;
disposingTime--; //注销计时-1
}
else
{
disposing = false;
disabled = true; //在最后的旋转特效以后，同意注销此子弹
}
}
return;
}
speed += 2; //每帧速度+1
if (Datas.CurrentEnemys.Count > 0)
{
double distance = 100000000; //取一个极端数值，使每一个求得值都会小于这个值
double lastdistance = distance;
foreach (Enemy e in Datas.CurrentEnemys) //将离Player距离最短的作为跟踪对象
{
if (e.Position.X < -200 || e.Position.X > 200 || e.Position.Y < -40 || e.Position.Y > 500)
continue;
distance = (Datas.CurrentPlayer.Position.X - e.Position.X) * (Datas.CurrentPlayer.Position.X - e.Position.X) +
(Datas.CurrentPlayer.Position.Y - e.Position.Y) * (Datas.CurrentPlayer.Position.Y - e.Position.Y);
if (distance < lastdistance)
{
FollowEnemy = e;
}
lastdistance = distance;
}
}
if (Position.X < -190 || Position.X > 190 || Position.Y < -20 || Position.Y > 450)
{
speed = 0;
working = false;
disabled = true;
}
move(elapsedTime);
//跟踪旋转
if (FollowEnemy != null && !FollowEnemy.disabled && FollowEnemy.living)
{
Vector2D vct = new Vector2D(FollowEnemy.Position.X - Position.X,
FollowEnemy.Position.Y - Position.Y);
if (!(vct.X == 0 && vct.Y == 0))
{
double distance = vct.X * vct.X + vct.Y * vct.Y;
double percent = distance / 40000;
if (percent > 1)
percent = 1;
percent = 1 - percent;
float addangle = (float)percent * 1080;
vct.Normalize();
double vct_angle = vct.GetAngle(); //目标的角度值
double dir_angle = Direction.GetAngle(); //当前方向的角度值
if (vct_angle < dir_angle)
{
if (dir_angle - vct_angle < 180)
{
Direction.rotate( (addangle + rotateSpeed) * (float)elapsedTime);
double d_2 = Direction.GetAngle();
if (d_2 > dir_angle) //如果左旋转后反而比原本角度更大，则证明旋转过度
{
Direction.X = vct.X;
Direction.Y = vct.Y;
}
else if (d_2 < vct_angle) //如果旋转后跑到方向角左边，则证明旋转过度
{
Direction.X = vct.X;
Direction.Y = vct.Y;
}
}
else
{
Direction.rotate((- addangle -rotateSpeed) * (float)elapsedTime);
double d_2 = Direction.GetAngle();
if (d_2 < dir_angle) //如果旋转后反而比原本角度更小，则证明旋转过了一周
{
if (d_2 > vct_angle)
{
Direction.X = vct.X;
Direction.Y = vct.Y;
}
}
}
}
else if (vct_angle > dir_angle)
{
if (vct_angle - dir_angle < 180)
{
Direction.rotate((-addangle -rotateSpeed) * (float)elapsedTime);
double d_2 = Direction.GetAngle();
if (d_2 < dir_angle)
{
Direction.X = vct.X;
Direction.Y = vct.Y;
}
else if (d_2 > vct_angle)
{
Direction.X = vct.X;
Direction.Y = vct.Y;
}
}
else
{
Direction.rotate((addangle + rotateSpeed) * (float)elapsedTime);
double d_2 = Direction.GetAngle();
if (d_2 > dir_angle)
{
if (d_2 < vct_angle)
{
Direction.X = vct.X;
Direction.Y = vct.Y;
}
}
}
}
}
}
}
public MissPoint(TextureManager texturemanager, double X, double Y,Vector2D dir,int score = 100)
{
//确定类型
this.Type = Item.Miss_Point;
working = true;
//确定弹射范围
Position.X = X; Position.Y = Y;
if (dir.Y < 0)
dir.Y = -dir.Y;
if (dir.X >= 0)
{
double rad = dir.GetAngle();
if (rad > 60)
rad = 60;
direction = new Vector2D(0, 1);
direction.rotate((float)(Datas.LooselyRandom.NextDouble() * (rad - 2*randDomain) + randDomain));
}
else
{
double rad = dir.GetAngle();
rad = 360 - rad;
if (rad > 60)
rad = 60;
direction = new Vector2D(0, 1);
direction.rotate(-((float)(Datas.LooselyRandom.NextDouble() * (rad - 2 * randDomain) + randDomain)));
}
speed_right = speed_totle * direction.X;
speed_up = speed_totle * direction.Y;
double offset_x = Center_Distance * direction.X;
double offset_y = Center_Distance * direction.Y;
Position.X += offset_x;
Position.Y += offset_y;
offset_x = Datas.LooselyRandom.NextDouble() * 2 *randFireDomain - randFireDomain;
Position.X += offset_x;
Texture texture = texturemanager.Get("Ef_etama2");
sprite = new Sprite();
sprite.Texture = texture;
sprite.SetHeight(16);
sprite.SetWidth(16);
sprite.SetUVs(14 * per_256, 8 * per_256, 16 * per_256, 10 * per_256);
//保存了MissPoint的一些必要信息
ItemData = new itemdata.MissPoint(score,3);
}
public override void Update(double elapsedTime)
{
if (!working)
{
if (disposing)
{
if (disposingTime > 0)
{
angle += (float)elapsedTime * 360 * 3;
_alpha = disposingTime / 12.0f;
disposingTime--; //注销计时-1
}
else
{
disposing = false;
disabled = true; //在最后的旋转特效以后，同意注销此子弹
}
}
return;
}
speed += 2; //每帧速度+1
if (Datas.CurrentEnemys.Count > 0)
{
double distance = 100000000; //取一个极端数值，使每一个求得值都会小于这个值
double lastdistance = distance;
foreach (Enemy e in Datas.CurrentEnemys) //将离Player距离最短的作为跟踪对象
{
if (e.Position.X < -200 || e.Position.X > 200 || e.Position.Y < -40 || e.Position.Y > 500)
{
continue;
}
distance = (Datas.CurrentPlayer.Position.X - e.Position.X) * (Datas.CurrentPlayer.Position.X - e.Position.X) +
(Datas.CurrentPlayer.Position.Y - e.Position.Y) * (Datas.CurrentPlayer.Position.Y - e.Position.Y);
if (distance < lastdistance)
{
FollowEnemy = e;
}
lastdistance = distance;
}
}
if (Position.X < -190 || Position.X > 190 || Position.Y < -20 || Position.Y > 450)
{
speed = 0;
working = false;
disabled = true;
}
move(elapsedTime);
//跟踪旋转
if (FollowEnemy != null && !FollowEnemy.disabled && FollowEnemy.living)
{
Vector2D vct = new Vector2D(FollowEnemy.Position.X - Position.X,
FollowEnemy.Position.Y - Position.Y);
if (!(vct.X == 0 && vct.Y == 0))
{
double distance = vct.X * vct.X + vct.Y * vct.Y;
double percent = distance / 40000;
if (percent > 1)
{
percent = 1;
}
percent = 1 - percent;
float addangle = (float)percent * 1080;
vct.Normalize();
double vct_angle = vct.GetAngle(); //目标的角度值
double dir_angle = Direction.GetAngle(); //当前方向的角度值
if (vct_angle < dir_angle)
{
if (dir_angle - vct_angle < 180)
{
Direction.rotate((addangle + rotateSpeed) * (float)elapsedTime);
double d_2 = Direction.GetAngle();
if (d_2 > dir_angle) //如果左旋转后反而比原本角度更大，则证明旋转过度
{
Direction.X = vct.X;
Direction.Y = vct.Y;
}
else if (d_2 < vct_angle) //如果旋转后跑到方向角左边，则证明旋转过度
{
Direction.X = vct.X;
Direction.Y = vct.Y;
}
}
else
{
Direction.rotate((-addangle - rotateSpeed) * (float)elapsedTime);
double d_2 = Direction.GetAngle();
if (d_2 < dir_angle) //如果旋转后反而比原本角度更小，则证明旋转过了一周
{
if (d_2 > vct_angle)
{
Direction.X = vct.X;
Direction.Y = vct.Y;
}
}
}
}
else if (vct_angle > dir_angle)
{
if (vct_angle - dir_angle < 180)
{
Direction.rotate((-addangle - rotateSpeed) * (float)elapsedTime);
double d_2 = Direction.GetAngle();
if (d_2 < dir_angle)
{
Direction.X = vct.X;
Direction.Y = vct.Y;
}
else if (d_2 > vct_angle)
{
Direction.X = vct.X;
Direction.Y = vct.Y;
}
}
else
{
Direction.rotate((addangle + rotateSpeed) * (float)elapsedTime);
double d_2 = Direction.GetAngle();
if (d_2 > dir_angle)
{
if (d_2 < vct_angle)
{
Direction.X = vct.X;
Direction.Y = vct.Y;
}
}
}
}
}
}
}