private void frmMain_Load(object sender, EventArgs e)
{
imgRes = new List <Image>();
/*
* imgRes.Add(Properties.Resources.shot);
* imgRes.Add(Properties.Resources.player);
* imgRes.Add(Properties.Resources.enemy);
* imgRes.Add(Properties.Resources.crush);
* imgRes.Add(Properties.Resources.explosion);
*/
foreach (string fn in resources)
{
imgRes.Add(Image.FromFile(fn));
}
infShot = new infSprite(1.0f, 0.2f, imgRes[0], imgRes[3], imgRes[4]);
infPlayer = new infSprite(10.0f, 0.2f, imgRes[1], imgRes[3], imgRes[4]);
infEnemy = new infSprite(10.0f, 0.2f, imgRes[2], imgRes[3], imgRes[4]);
sprites = new List <clsSprite>();
player = new clsPlayer(calcpos(infPlayer, 0, 0), infPlayer);
sprites.Add(player);
for (int j = 0; j < 3; ++j)
{
for (int i = 0; i < 7; ++i)
{
sprites.Add(new clsEnemy(calcpos(infEnemy, j + 1, i - 3), infEnemy));
}
}
timer1.Interval = 100;
timer1.Start(); // timer1.Enabled = true;
}
public clsSprite(PointF p, PointF v, infSprite inf,
long life, bool vanish, bool emission)
{
position = new PointF(p.X, p.Y);
velocity = new PointF(v.X, v.Y);
acceleration = new PointF(0, 0);
this.inf = inf;
this.life = life;
this.vanish = vanish;
this.emission = emission;
}
private PointF calcpos(infSprite inf, int r, int c)
{
float x = ClientRectangle.Width / 2.0f;
float y = ClientRectangle.Height - (r + 1) * inf.img.Height;
if (r > 0)
{
x += inf.img.Width * (1.2f + 2.2f * c - r * 2.0f / 3.0f);
y -= 7 * inf.img.Height;
}
return(new PointF(x, y));
}
public override IEnumerable <clsShot> emit(infSprite sinf)
{
Size swh = new Size(sinf.img.Width, sinf.img.Height);
Size ewh = wh();
float x = position.X;
float y = position.Y + (ewh.Height + swh.Height) / 2.0f;
PointF p = new PointF(x, y);
float dx = 0;
float dy = swh.Height;
PointF v = new PointF(dx, dy);
yield return(new clsShot(p, v, sinf));
}
public override IEnumerable <clsShot> emit(infSprite sinf)
{
Size swh = new Size(sinf.img.Width, sinf.img.Height);
Size pwh = wh();
float x = position.X;
float y = position.Y - (pwh.Height + swh.Height) / 2.0f;
PointF p = new PointF(x, y);
int r = swh.Height; // too short to reject crush with neighbourhood
int ds = 7; // 1; to 17; // odd number
int hd = ds / 2; // (i - hd) means (-hd ... 0 ... +hd)
for (int i = 0; i < ds; ++i)
{
double ang = (double)(i - hd) / ds;
//double th = Math.PI / 2.0 + 2.0 * Math.PI * ang; // circle around
double th = Math.PI / 2.0 + Math.PI * ang; // half circle
float dx = (float)(r * Math.Cos(th));
float dy = (float)(r * Math.Sin(th));
PointF v = new PointF(dx, -dy);
yield return(new clsShot(p, v, sinf));
}
}
public clsPlayer(PointF p, infSprite inf) :
base(p, new PointF(0, 0), inf, -1, false, false)
{
}
public clsEnemy(PointF p, infSprite inf) :
base(p, new PointF(0, 0), inf, -1, false, true)
{
}
public clsShot(PointF p, PointF v, infSprite inf) :
base(p, v, inf, -1, true, false)
{
}
public virtual IEnumerable <clsShot> emit(infSprite inf)
{
// throw new IndexOutOfRangeException("emit().next");
throw new ArgumentOutOfRangeException("emit().next");
// yield return null;
}
