public static Scene MakeParticlesScene()
{
var scene = new Scene()
{
Name = "Particles"
};
float scale = 1.5f;
var body = new SpriteUV(new TextureInfo(new Texture2D("/Application/Sample/GameEngine2D/FeatureCatalog/data/arrow.png", false), new Vector2i(4, 4)));
body.CenterSprite(TRS.Local.BottomCenter);
body.Scale = body.TextureInfo.TextureSizef * scene.Camera.GetPixelSize() * scale;
body.BlendMode = BlendMode.Additive;
scene.AddChild(body);
body.Schedule((dt) => {
if (Input2.Touch00.Down)
{
Vector2 touch_pos = Director.Instance.CurrentScene.Camera.GetTouchPos();
if ((body.Position - touch_pos).Length() > 0.01f)
{
body.Rotation = Math.LerpUnitVectors(body.Rotation, Math.Perp((body.Position - touch_pos).Normalize( )), 0.3f);
}
body.Position = Math.Lerp(body.Position, touch_pos, 0.3f);
}
body.Position += Input2.GamePad0.Dpad * 0.1f;
});
Particles fire_node = new Particles(300);
ParticleSystem fire = fire_node.ParticleSystem;
fire.TextureInfo = new TextureInfo(new Texture2D("/Application/Sample/GameEngine2D/FeatureCatalog/data/fire.png", false));
// fire.BlendMode = BlendMode.PremultipliedAlpha;
fire_node.Schedule((dt) =>
{
fire.Emit.Transform = fire_node.GetWorldTransform();
fire.Emit.TransformForVelocityEstimate = fire_node.GetWorldTransform();
fire.RenderTransform = Director.Instance.CurrentScene.GetWorldTransform(); // most probably identity
}
, -1);
fire_node.AdHocDraw += () =>
{
// debug draw the emission rectangle in pink
Director.Instance.GL.SetBlendMode(BlendMode.Additive);
Director.Instance.DrawHelpers.SetColor(Colors.Pink * 0.3f);
Director.Instance.DrawHelpers.DrawBounds2(Bounds2.QuadMinus1_1.Scale(fire.Emit.PositionVar, Math._00));
};
fire.Emit.Velocity = new Vector2(0.0f, -2.0f);
fire.Emit.VelocityVar = new Vector2(0.2f, 0.3f);
fire.Emit.ForwardMomentum = 0.2f;
fire.Emit.AngularMomentun = 0.0f;
fire.Emit.LifeSpan = 0.4f;
fire.Emit.WaitTime = 0.005f;
float s = 0.25f;
fire_node.Position = new Vector2(0.0f, -s);
fire.Emit.PositionVar = new Vector2(s, s);
fire.Emit.ColorStart = Colors.Red;
fire.Emit.ColorStartVar = new Vector4(0.0f, 0.0f, 0.0f, 0.0f);
fire.Emit.ColorEnd = Colors.White;
fire.Emit.ColorEndVar = new Vector4(0.2f, 0.0f, 0.0f, 0.0f);
fire.Emit.ScaleStart = 0.3f * scale;
fire.Emit.ScaleStartRelVar = 0.2f;
fire.Emit.ScaleEnd = 0.6f * scale;
fire.Emit.ScaleEndRelVar = 0.2f;
fire.Simulation.Fade = 0.3f;
body.AddChild(fire_node);
Particles smoke_node = new Particles(300);
ParticleSystem smoke = smoke_node.ParticleSystem;
smoke.TextureInfo = new TextureInfo(new Texture2D("/Application/Sample/GameEngine2D/FeatureCatalog/data/fire.png", false));
// smoke.BlendMode = BlendMode.PremultipliedAlpha;
smoke_node.Schedule((dt) =>
{
smoke.Emit.Transform = smoke_node.GetWorldTransform();
smoke.Emit.TransformForVelocityEstimate = smoke_node.GetWorldTransform();
smoke.RenderTransform = Director.Instance.CurrentScene.GetWorldTransform(); // most probably identity
}
, -1);
smoke_node.AdHocDraw += () =>
{
// debug draw the emission rectangle in pink
Director.Instance.GL.SetBlendMode(BlendMode.Additive);
Director.Instance.DrawHelpers.SetColor(Colors.Pink * 0.3f);
Director.Instance.DrawHelpers.DrawBounds2(Bounds2.QuadMinus1_1.Scale(smoke.Emit.PositionVar, Math._00));
};
smoke.Emit.Velocity = new Vector2(0.0f, -2.0f);
smoke.Emit.VelocityVar = new Vector2(0.2f, 0.3f);
smoke.Emit.ForwardMomentum = 0.2f;
smoke.Emit.AngularMomentun = 0.0f;
smoke.Emit.LifeSpan = 2.4f;
smoke.Emit.WaitTime = 0.02f;
smoke_node.Position = new Vector2(0.0f, -s);
smoke.Emit.PositionVar = new Vector2(s, s);
smoke.Emit.ColorStart = Colors.Black;
smoke.Emit.ColorStartVar = new Vector4(0.0f, 0.0f, 0.0f, 0.0f);
smoke.Emit.ColorEnd = Colors.Grey30;
smoke.Emit.ColorEndVar = new Vector4(0.2f, 0.0f, 0.0f, 0.0f);
smoke.Emit.ScaleStart = 0.3f * scale * 3.0f;
smoke.Emit.ScaleStartRelVar = 0.2f;
smoke.Emit.ScaleEnd = 0.6f * scale * 4.0f;
smoke.Emit.ScaleEndRelVar = 0.2f;
smoke.Simulation.Fade = 0.3f;
body.AddChild(smoke_node);
scene.RegisterDisposeOnExit((System.IDisposable)fire);
scene.RegisterDisposeOnExit((System.IDisposable)smoke);
scene.RegisterDisposeOnExit((System.IDisposable)body.TextureInfo);
return(scene);
}
