Здравствуйте, подскажите почему не работает система частиц, код взял из интернета, уже всё разобрал не могу понять почему не работает!
| C# |
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| using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using SFML;
using SFML.System;
using SFML.Graphics;
using SFML.Window;
namespace ComicDefender
{
class Program
{
private static RenderWindow _window;
public static void Main(string[] args)
{
_window = new RenderWindow(new VideoMode(800, 600), "SFML window");
ParticleSystem particles = new ParticleSystem(1000);
Clock clock = new Clock();
_window.SetVisible(true);
_window.SetFramerateLimit(60);
_window.Closed += new EventHandler(OnClosed);
while (_window.IsOpen)
{
Vector2i mouse = Mouse.GetPosition(_window);
//Console.WriteLine(mouse.X + " " + mouse.Y);
particles.SetEmitter(new Vector2f(mouse.X, mouse.Y));
particles.update(clock.Restart());
_window.DispatchEvents();
_window.Clear(Color.Black);
_window.Draw(particles);
_window.Display();
}
}
private static void OnClosed(object sender, EventArgs e)
{
_window.Close();
}
}
class ParticleSystem : Transformable, Drawable
{
public VertexArray m_vertices;
public Time m_lifetime;
public List<Particle> m_particles;
public Vector2f m_emitter;
public ParticleSystem(int count)
{
m_particles = new List<Particle>(count);
m_vertices = new VertexArray(PrimitiveType.Points, (uint)count);
m_lifetime = Time.FromSeconds(count);
m_emitter = new Vector2f(0, 0);
for (int i = 0; i < count; i++)
{
m_particles.Add(new Particle());
resetParticle(i);
}
}
public void Draw(RenderTarget target, RenderStates states)
{
states.Texture = null;
states.Transform *= Transform;
target.Draw(m_vertices, states);
}
public void SetEmitter(Vector2f newEmitter)
{
m_emitter = newEmitter;
Console.WriteLine(newEmitter.X + " " + newEmitter.Y);
}
public void update(Time elapsed)
{
for (int i = 0; i < m_particles.Count; ++i)
{
// update the particle lifetime
Particle p = m_particles[i];
p.lifetime -= elapsed;
m_particles[i] = p;
// if the particle is dead, respawn it
if (p.lifetime <= Time.Zero)
{
resetParticle(i);
}
// update the position of the corresponding vertex
var a = m_vertices[(uint)i];
a.Position += p.velocity * elapsed.AsSeconds();
// update the alpha (transparency) of the particle according to its lifetime
float ratio = p.lifetime.AsSeconds() / m_lifetime.AsSeconds();
a.Color = Color.Green;
a.Color.A = (byte)(ratio * 255);
m_vertices[(uint)i] = a;
}
}
void resetParticle(int index)
{
// give a random velocity and lifetime to the particle
float angle = (new Random().Next() % 360) * 3.14f / 180;
float speed = (new Random().Next() % 50);
var temp = m_particles[index];
temp.velocity = new SFML.System.Vector2f((float)(Math.Cos(angle) * speed), (float)(Math.Sin(angle) * speed));
temp.lifetime = Time.FromMilliseconds((new Random().Next() % 2000) + 1000);
m_particles[index] = temp;
// reset the position of the corresponding vertex
var temp2 = m_vertices[(uint)index];
temp2.Position = m_emitter;
m_vertices[(uint)index] = temp2;
}
public class Particle
{
public Vector2f velocity;
public Time lifetime;
}
}
} |
|
На консоле вроде пишет что создалась частица в такой то координате, но на экране их нет. Помогите разобраться пожалуйста.
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