static IEnumerable<Renderable> DrawZap( int2 from, int2 to, Sequence tesla )
{
int2 d = to - from;
if( d.X < 8 )
{
var prev = new int2( 0, 0 );
var y = d.Y;
while( y >= prev.Y + 8 )
{
yield return new Renderable( tesla.GetSprite( 2 ), (float2)( from + prev - new int2( 0, 8 ) ), "effect");
prev.Y += 8;
}
}
else
{
var prev = new int2( 0, 0 );
for( int i = 1 ; i < d.X ; i += 8 )
{
var y = i * d.Y / d.X;
if( y <= prev.Y - 8 )
{
yield return new Renderable(tesla.GetSprite(3), (float2)(from + prev - new int2(8, 16)), "effect");
prev.Y -= 8;
while( y <= prev.Y - 8 )
{
yield return new Renderable(tesla.GetSprite(2), (float2)(from + prev - new int2(0, 16)), "effect");
prev.Y -= 8;
}
}
else if( y >= prev.Y + 8 )
{
yield return new Renderable(tesla.GetSprite(0), (float2)(from + prev - new int2(8, 8)), "effect");
prev.Y += 8;
while( y >= prev.Y + 8 )
{
yield return new Renderable(tesla.GetSprite(2), (float2)(from + prev - new int2(0, 8)), "effect");
prev.Y += 8;
}
}
else
yield return new Renderable(tesla.GetSprite(1), (float2)(from + prev - new int2(8, 8)), "effect");
prev.X += 8;
}
}
}
static IEnumerable<IRenderable> DrawZapWandering(WorldRenderer wr, float2 from, float2 to, Sequence s, string pal)
{
var z = float2.Zero; /* hack */
var dist = to - from;
var norm = (1f / dist.Length) * new float2(-dist.Y, dist.X);
var renderables = new List<IRenderable>();
if (Game.CosmeticRandom.Next(2) != 0)
{
var p1 = from + (1 / 3f) * dist + WRange.FromPDF(Game.CosmeticRandom, 2).Range * dist.Length / 4096 * norm;
var p2 = from + (2 / 3f) * dist + WRange.FromPDF(Game.CosmeticRandom, 2).Range * dist.Length / 4096 * norm;
renderables.AddRange(DrawZap(wr, from, p1, s, out p1, pal));
renderables.AddRange(DrawZap(wr, p1, p2, s, out p2, pal));
renderables.AddRange(DrawZap(wr, p2, to, s, out z, pal));
}
else
{
var p1 = from + (1 / 2f) * dist + WRange.FromPDF(Game.CosmeticRandom, 2).Range * dist.Length / 4096 * norm;
renderables.AddRange(DrawZap(wr, from, p1, s, out p1, pal));
renderables.AddRange(DrawZap(wr, p1, to, s, out z, pal));
}
return renderables;
}
static IEnumerable<IRenderable> DrawZap(WorldRenderer wr, float2 from, float2 to, Sequence s, out float2 p, string palette)
{
var dist = to - from;
var q = new float2(-dist.Y, dist.X);
var c = -float2.Dot(from, q);
var rs = new List<IRenderable>();
var z = from;
var pal = wr.Palette(palette);
while ((to - z).X > 5 || (to - z).X < -5 || (to - z).Y > 5 || (to - z).Y < -5)
{
var step = steps.Where(t => (to - (z + new float2(t[0], t[1]))).LengthSquared < (to - z).LengthSquared)
.OrderBy(t => Math.Abs(float2.Dot(z + new float2(t[0], t[1]), q) + c)).First();
var pos = wr.Position((z + new float2(step[2], step[3])).ToInt2());
rs.Add(new SpriteRenderable(s.GetSprite(step[4]), pos, WVec.Zero, 0, pal, 1f, true));
z += new float2(step[0], step[1]);
if (rs.Count >= 1000)
break;
}
p = z;
return rs;
}
static IEnumerable<Renderable> DrawZapWandering(WorldRenderer wr, PPos from, PPos to, Sequence s)
{
var z = float2.Zero; /* hack */
var dist = to - from;
var norm = (1f / dist.Length) * new float2(-dist.Y, dist.X);
var renderables = new List<Renderable>();
if (Game.CosmeticRandom.Next(2) != 0)
{
var p1 = from.ToFloat2() + (1 / 3f) * dist.ToFloat2() + Game.CosmeticRandom.Gauss1D(1) * .2f * dist.Length * norm;
var p2 = from.ToFloat2() + (2 / 3f) * dist.ToFloat2() + Game.CosmeticRandom.Gauss1D(1) * .2f * dist.Length * norm;
renderables.AddRange(DrawZap(wr, from.ToFloat2(), p1, s, out p1));
renderables.AddRange(DrawZap(wr, p1, p2, s, out p2));
renderables.AddRange(DrawZap(wr, p2, to.ToFloat2(), s, out z));
}
else
{
var p1 = from.ToFloat2() + (1 / 2f) * dist.ToFloat2() + Game.CosmeticRandom.Gauss1D(1) * .2f * dist.Length * norm;
renderables.AddRange(DrawZap(wr, from.ToFloat2(), p1, s, out p1));
renderables.AddRange(DrawZap(wr, p1, to.ToFloat2(), s, out z));
}
return renderables;
}
static IEnumerable<Renderable> DrawZap(WorldRenderer wr, float2 from, float2 to, Sequence s, out float2 p)
{
var dist = to - from;
var q = new float2(-dist.Y, dist.X);
var c = -float2.Dot(from, q);
var rs = new List<Renderable>();
var z = from;
while ((to - z).X > 5 || (to - z).X < -5 || (to - z).Y > 5 || (to - z).Y < -5)
{
var step = steps.Where(t => (to - (z + new float2(t[0],t[1]))).LengthSquared < (to - z).LengthSquared )
.OrderBy(t => Math.Abs(float2.Dot(z + new float2(t[0], t[1]), q) + c)).First();
rs.Add(new Renderable(s.GetSprite(step[4]), z + new float2(step[2], step[3]),
wr.Palette("effect"), (int)from.Y));
z += new float2(step[0], step[1]);
if( rs.Count >= 1000 )
break;
}
p = z;
return rs;
}
int timeUntilRemove = 2; // # of frames
#endregion Fields
#region Constructors
public TeslaZap(TeslaZapInfo info, ProjectileArgs args)
{
Args = args;
tesla = SequenceProvider.GetSequence("litning", "bright");
}