private void AddParticles(IStateOwner pOwner, int BlockX, int BlockY, int DirectionMultiplier, int RowsCleared)
{
//the actual block we are clearing...
var ClearingBlock = _BaseState.PlayField.Contents[BlockY][BlockX];
SKColor baseColor = TetrisGame.Choose(ClearLineParticleColours);
Bitmap sourcebitmap = null;
if (ClearingBlock != null && ClearingBlock is ImageBlock ib)
{
sourcebitmap = new Bitmap(ib._RotationImages[MathHelper.mod(ib.Rotation, ib._RotationImages.Length)]);
}
var blockWidth = _BaseState.PlayField.GetBlockWidth((SKRect)pOwner.LastDrawBounds);
var blockHeight = _BaseState.PlayField.GetBlockHeight((SKRect)pOwner.LastDrawBounds);
var CoordPos = new BCPoint(BlockX,
BlockY - 2);
lock (_BaseState.Particles)
{
List <BaseParticle> ToAdd = new List <BaseParticle>(ParticleCountPerBlock);
for (int i = 0; i < ParticleCountPerBlock; i++)
{
BCPoint ParticlePos = new BCPoint((float)TetrisGame.rgen.NextDouble(), (float)TetrisGame.rgen.NextDouble());
//choose a new random position within the block.
BCPoint NewParticlePoint = new BCPoint(CoordPos.X + ParticlePos.X, CoordPos.Y + ParticlePos.Y);
BCPoint Velocity = new BCPoint(
(float)(DirectionMultiplier * (TetrisGame.rgen.NextDouble() * 1 + (Math.Abs(BlockX - (_BaseState.PlayField.ColCount / 2)) / 5))), 0
);
BCColor ChosenColor = baseColor;
if (sourcebitmap != null)
{
Point TargetPixel = new Point((int)(ParticlePos.X * sourcebitmap.Width), (int)(ParticlePos.Y * sourcebitmap.Height));
ChosenColor = sourcebitmap.GetPixel(TargetPixel.X, TargetPixel.Y);
}
BaseParticle p = new BaseParticle(NewParticlePoint, Velocity, ChosenColor);
if (RowsCleared >= 4)
{
if (TetrisGame.rgen.NextDouble() > 0.25d)
{
p.ColorCalculatorFunction = BaseParticle.GetRainbowColorFunc(pOwner, 500);
}
}
p.TTL = (uint)ClearParticleTTL;
ToAdd.Add(p);
}
_BaseState.Particles.AddRange(ToAdd);
}
}
private void AddParticles_Row(IStateOwner pOwner, BCRect RowBounds, int Lines = 1)
{
String UseText = RowClearText?[Lines] ?? $"{Lines}LINE";
Func <BaseParticle, BCColor> TetrisColorFunc = BaseParticle.GetRainbowColorFunc(pOwner);
Func <BaseParticle, BCColor> SingleLineColorFunc = (o) =>
{
int timebase = 2000;
double DarknessValue = (Math.Sin((float)pOwner.GetElapsedTime().Ticks / 2000) / 2) + 1;
BCColor usecolor = (Color) new HSLColor(0, 120, DarknessValue * 120);
return(usecolor);
};
Func <BaseParticle, BCColor> DoubleLineColorFunc = (o) =>
{
int timebase = 2000;
double DarknessValue = Math.Sin((float)pOwner.GetElapsedTime().Ticks / 2000);
BCColor usecolor = (Color) new HSLColor(75, 120, DarknessValue * 120);
return(usecolor);
};
Func <BaseParticle, BCColor> TripleLineColorFunc = (o) =>
{
int timebase = 2000;
double DarknessValue = Math.Sin((float)pOwner.GetElapsedTime().Ticks / 2000);
BCColor usecolor = (Color) new HSLColor(150, 120, DarknessValue * 120);
return(usecolor);
};
Func <BaseParticle, BCColor>[] LineFuncs = new Func <BaseParticle, BCColor>[]
{
SingleLineColorFunc, DoubleLineColorFunc, TripleLineColorFunc, TetrisColorFunc
};
//split the text into characters...
char[] CharsToShow = UseText.ToCharArray();
float XOffset = (int)((float)RowBounds.Width / 2 - ((float)CharsToShow.Length / 2)); //one character per block, ideally.
List <CharParticle> MakeParticles = new List <CharParticle>();
for (int x = 0; x < CharsToShow.Length; x++)
{
int i = x % CharsToShow.Length;
CharParticle makeparticle = new CharParticle(new BCPoint(RowBounds.Left + XOffset + x, RowBounds.Top + RowBounds.Height / 2), new BCPoint(0, -0.05f), Color.Red, CharsToShow[i].ToString());
makeparticle.TTL = 1500;
//makeparticle.Decay = new BCPoint(0.5f, 0.5f);
MakeParticles.Add(makeparticle);
Lines = Lines > 4 ? Lines = 4:Lines;
if (Lines >= 4)
{
makeparticle.ColorCalculatorFunction = LineFuncs[Lines - 1];
}
else
{
makeparticle.Color = new Color[] { Color.Red, Color.Green, Color.Yellow }[Lines - 1];
}
lock (_BaseState.TopParticles)
{
_BaseState.TopParticles.AddRange(MakeParticles);
}
}
}