bool UpdateParticle(ref CCParticleRadial particleRadial, float dt)
{
if (UpdateParticleBase(ref particleRadial.ParticleBase, dt))
{
particleRadial.Angle += particleRadial.DegreesPerSecond * dt;
particleRadial.Radius += particleRadial.DeltaRadius * dt;
CCPoint position = particleRadial.ParticleBase.Position;
position.X = -CCMathHelper.Cos(particleRadial.Angle) * particleRadial.Radius;
position.Y = -CCMathHelper.Sin(particleRadial.Angle) * particleRadial.Radius;
particleRadial.ParticleBase.Position = position;
return(true);
}
return(false);
}
// Initialise particle
void InitParticle(ref CCParticleGravity particleGrav, ref CCParticleBase particleBase)
{
InitParticleBase(ref particleBase);
// direction
float a = MathHelper.ToRadians(Angle + AngleVar * CCRandom.Float_Minus1_1());
if (EmitterMode == CCEmitterMode.Gravity)
{
CCPoint v = new CCPoint(CCMathHelper.Cos(a), CCMathHelper.Sin(a));
float s = GravityMode.Speed + GravityMode.SpeedVar * CCRandom.Float_Minus1_1();
particleGrav.Direction = v * s;
particleGrav.RadialAccel = GravityMode.RadialAccel + GravityMode.RadialAccelVar * CCRandom.Float_Minus1_1();
particleGrav.TangentialAccel = GravityMode.TangentialAccel + GravityMode.TangentialAccelVar * CCRandom.Float_Minus1_1();
if (GravityMode.RotationIsDir)
{
particleBase.Rotation = -MathHelper.ToDegrees(CCPoint.ToAngle(particleGrav.Direction));
}
}
}
void UpdateQuad(ref CCV3F_C4B_T2F_Quad quad, ref CCParticleBase particle)
{
CCPoint newPosition;
if (PositionType == CCPositionType.Free)
{
newPosition.X = particle.Position.X - (currentPosition.X - particle.StartPosition.X);
newPosition.Y = particle.Position.Y - (currentPosition.Y - particle.StartPosition.Y);
}
else
{
newPosition = particle.Position;
}
CCColor4B color = new CCColor4B();
if (OpacityModifyRGB)
{
color.R = (byte)(particle.Color.R * particle.Color.A * 255);
color.G = (byte)(particle.Color.G * particle.Color.A * 255);
color.B = (byte)(particle.Color.B * particle.Color.A * 255);
color.A = (byte)(particle.Color.A * 255);
}
else
{
color.R = (byte)(particle.Color.R * 255);
color.G = (byte)(particle.Color.G * 255);
color.B = (byte)(particle.Color.B * 255);
color.A = (byte)(particle.Color.A * 255);
}
quad.BottomLeft.Colors = color;
quad.BottomRight.Colors = color;
quad.TopLeft.Colors = color;
quad.TopRight.Colors = color;
// vertices
float size_2 = particle.Size / 2;
if (particle.Rotation != 0.0)
{
float x1 = -size_2;
float y1 = -size_2;
float x2 = size_2;
float y2 = size_2;
float x = newPosition.X;
float y = newPosition.Y;
float r = -CCMathHelper.ToRadians(particle.Rotation);
float cr = CCMathHelper.Cos(r);
float sr = CCMathHelper.Sin(r);
float ax = x1 * cr - y1 * sr + x;
float ay = x1 * sr + y1 * cr + y;
float bx = x2 * cr - y1 * sr + x;
float by = x2 * sr + y1 * cr + y;
float cx = x2 * cr - y2 * sr + x;
float cy = x2 * sr + y2 * cr + y;
float dx = x1 * cr - y2 * sr + x;
float dy = x1 * sr + y2 * cr + y;
// bottom-left
quad.BottomLeft.Vertices.X = ax;
quad.BottomLeft.Vertices.Y = ay;
// bottom-right vertex:
quad.BottomRight.Vertices.X = bx;
quad.BottomRight.Vertices.Y = by;
// top-left vertex:
quad.TopLeft.Vertices.X = dx;
quad.TopLeft.Vertices.Y = dy;
// top-right vertex:
quad.TopRight.Vertices.X = cx;
quad.TopRight.Vertices.Y = cy;
}
else
{
// bottom-left vertex:
quad.BottomLeft.Vertices.X = newPosition.X - size_2;
quad.BottomLeft.Vertices.Y = newPosition.Y - size_2;
// bottom-right vertex:
quad.BottomRight.Vertices.X = newPosition.X + size_2;
quad.BottomRight.Vertices.Y = newPosition.Y - size_2;
// top-left vertex:
quad.TopLeft.Vertices.X = newPosition.X - size_2;
quad.TopLeft.Vertices.Y = newPosition.Y + size_2;
// top-right vertex:
quad.TopRight.Vertices.X = newPosition.X + size_2;
quad.TopRight.Vertices.Y = newPosition.Y + size_2;
}
}
void UpdateQuad(ref CCV3F_C4B_T2F_Quad quad, ref CCParticleBase particle)
{
CCPoint newPosition;
if (PositionType == CCPositionType.Free || PositionType == CCPositionType.Relative)
{
newPosition.X = particle.Position.X - (currentPosition.X - particle.StartPosition.X);
newPosition.Y = particle.Position.Y - (currentPosition.Y - particle.StartPosition.Y);
}
else
{
newPosition = particle.Position;
}
// translate newPos to correct position, since matrix transform isn't performed in batchnode
// don't update the particle with the new position information, it will interfere with the radius and tangential calculations
if (BatchNode != null)
{
newPosition.X += Position.X;
newPosition.Y += Position.Y;
}
CCColor4B color = new CCColor4B();
if (OpacityModifyRGB)
{
color.R = (byte)(particle.Color.R * particle.Color.A * 255);
color.G = (byte)(particle.Color.G * particle.Color.A * 255);
color.B = (byte)(particle.Color.B * particle.Color.A * 255);
color.A = (byte)(particle.Color.A * 255);
}
else
{
color.R = (byte)(particle.Color.R * 255);
color.G = (byte)(particle.Color.G * 255);
color.B = (byte)(particle.Color.B * 255);
color.A = (byte)(particle.Color.A * 255);
}
quad.BottomLeft.Colors = color;
quad.BottomRight.Colors = color;
quad.TopLeft.Colors = color;
quad.TopRight.Colors = color;
// vertices
float size_2 = particle.Size / 2;
if (particle.Rotation != 0.0)
{
float x1 = -size_2;
float y1 = -size_2;
float x2 = size_2;
float y2 = size_2;
float x = newPosition.X;
float y = newPosition.Y;
float r = -CCMathHelper.ToRadians(particle.Rotation);
float cr = CCMathHelper.Cos(r);
float sr = CCMathHelper.Sin(r);
float ax = x1 * cr - y1 * sr + x;
float ay = x1 * sr + y1 * cr + y;
float bx = x2 * cr - y1 * sr + x;
float by = x2 * sr + y1 * cr + y;
float cx = x2 * cr - y2 * sr + x;
float cy = x2 * sr + y2 * cr + y;
float dx = x1 * cr - y2 * sr + x;
float dy = x1 * sr + y2 * cr + y;
// bottom-left
quad.BottomLeft.Vertices.X = ax;
quad.BottomLeft.Vertices.Y = ay;
// bottom-right vertex:
quad.BottomRight.Vertices.X = bx;
quad.BottomRight.Vertices.Y = by;
// top-left vertex:
quad.TopLeft.Vertices.X = dx;
quad.TopLeft.Vertices.Y = dy;
// top-right vertex:
quad.TopRight.Vertices.X = cx;
quad.TopRight.Vertices.Y = cy;
}
else
{
// bottom-left vertex:
quad.BottomLeft.Vertices.X = newPosition.X - size_2;
quad.BottomLeft.Vertices.Y = newPosition.Y - size_2;
// bottom-right vertex:
quad.BottomRight.Vertices.X = newPosition.X + size_2;
quad.BottomRight.Vertices.Y = newPosition.Y - size_2;
// top-left vertex:
quad.TopLeft.Vertices.X = newPosition.X - size_2;
quad.TopLeft.Vertices.Y = newPosition.Y + size_2;
// top-right vertex:
quad.TopRight.Vertices.X = newPosition.X + size_2;
quad.TopRight.Vertices.Y = newPosition.Y + size_2;
}
}