public void Draw(SpriteBatch spriteBatch, bool inWater, bool?inSub, ParticleBlendState blendState)
{
ParticlePrefab.DrawTargetType drawTarget = inWater ? ParticlePrefab.DrawTargetType.Water : ParticlePrefab.DrawTargetType.Air;
for (int i = 0; i < particleCount; i++)
{
var particle = particles[i];
if (particle.BlendState != blendState)
{
continue;
}
//equivalent to !particles[i].DrawTarget.HasFlag(drawTarget) but garbage free and faster
if ((particle.DrawTarget & drawTarget) == 0)
{
continue;
}
if (inSub.HasValue)
{
bool isOutside = particle.CurrentHull == null;
if (!particle.DrawOnTop && isOutside == inSub.Value)
{
continue;
}
}
particles[i].Draw(spriteBatch);
}
}
public void Draw(SpriteBatch spriteBatch, bool inWater, ParticleBlendState blendState)
{
ParticlePrefab.DrawTargetType drawTarget = inWater ? ParticlePrefab.DrawTargetType.Water : ParticlePrefab.DrawTargetType.Air;
for (int i = 0; i < particleCount; i++)
{
if (particles[i].BlendState != blendState)
{
continue;
}
if (!particles[i].DrawTarget.HasFlag(drawTarget))
{
continue;
}
particles[i].Draw(spriteBatch);
}
}
public ParticlePrefab(XElement element)
{
Name = element.Name.ToString();
Sprites = new List <Sprite>();
foreach (XElement subElement in element.Elements())
{
switch (subElement.Name.ToString().ToLowerInvariant())
{
case "sprite":
Sprites.Add(new Sprite(subElement));
break;
case "spritesheet":
case "animatedsprite":
Sprites.Add(new SpriteSheet(subElement));
break;
}
}
AnimDuration = element.GetAttributeFloat("animduration", 1.0f);
LoopAnim = element.GetAttributeBool("loopanim", true);
if (element.Attribute("angularvelocity") == null)
{
AngularVelocityMin = element.GetAttributeFloat("angularvelocitymin", 0.0f);
AngularVelocityMax = element.GetAttributeFloat("angularvelocitymax", 0.0f);
}
else
{
AngularVelocityMin = element.GetAttributeFloat("angularvelocity", 0.0f);
AngularVelocityMax = AngularVelocityMin;
}
AngularVelocityMin = MathHelper.ToRadians(AngularVelocityMin);
AngularVelocityMax = MathHelper.ToRadians(AngularVelocityMax);
if (element.Attribute("startsize") == null)
{
StartSizeMin = element.GetAttributeVector2("startsizemin", Vector2.One);
StartSizeMax = element.GetAttributeVector2("startsizemax", Vector2.One);
}
else
{
StartSizeMin = element.GetAttributeVector2("startsize", Vector2.One);
StartSizeMax = StartSizeMin;
}
if (element.Attribute("sizechange") == null)
{
SizeChangeMin = element.GetAttributeVector2("sizechangemin", Vector2.Zero);
SizeChangeMax = element.GetAttributeVector2("sizechangemax", Vector2.Zero);
}
else
{
SizeChangeMin = element.GetAttributeVector2("sizechange", Vector2.Zero);
SizeChangeMax = SizeChangeMin;
}
Drag = element.GetAttributeFloat("drag", 0.0f);
WaterDrag = element.GetAttributeFloat("waterdrag", 0.0f);
Friction = element.GetAttributeFloat("friction", 0.5f);
Restitution = element.GetAttributeFloat("restitution", 0.5f);
switch (element.GetAttributeString("blendstate", "alphablend"))
{
case "alpha":
case "alphablend":
BlendState = ParticleBlendState.AlphaBlend;
break;
case "add":
case "additive":
BlendState = ParticleBlendState.Additive;
break;
case "distort":
case "distortion":
BlendState = ParticleBlendState.Distortion;
break;
}
GrowTime = element.GetAttributeFloat("growtime", 0.0f);
if (element.Attribute("startrotation") == null)
{
StartRotationMin = element.GetAttributeFloat("startrotationmin", 0.0f);
StartRotationMax = element.GetAttributeFloat("startrotationmax", 0.0f);
}
else
{
StartRotationMin = element.GetAttributeFloat("startrotation", 0.0f);
StartRotationMax = StartRotationMin;
}
StartRotationMin = MathHelper.ToRadians(StartRotationMin);
StartRotationMax = MathHelper.ToRadians(StartRotationMax);
StartColor = new Color(element.GetAttributeVector4("startcolor", Vector4.One));
StartAlpha = element.GetAttributeFloat("startalpha", 1.0f);
DeleteOnCollision = element.GetAttributeBool("deleteoncollision", false);
CollidesWithWalls = element.GetAttributeBool("collideswithwalls", false);
CollisionRadius = element.GetAttributeFloat("collisionradius",
Sprites.Count > 0 ? 1 : Sprites[0].SourceRect.Width / 2.0f);
ColorChange = element.GetAttributeVector4("colorchange", Vector4.Zero);
LifeTime = element.GetAttributeFloat("lifetime", 5.0f);
VelocityChange = element.GetAttributeVector2("velocitychange", Vector2.Zero);
VelocityChange = ConvertUnits.ToDisplayUnits(VelocityChange);
RotateToDirection = element.GetAttributeBool("rotatetodirection", false);
switch (element.GetAttributeString("drawtarget", "air").ToLowerInvariant())
{
case "air":
default:
DrawTarget = DrawTargetType.Air;
break;
case "water":
DrawTarget = DrawTargetType.Water;
break;
case "both":
DrawTarget = DrawTargetType.Both;
break;
}
}
