Smoke.cs

Siirry tämän tiedoston dokumentaatioon.

using System;
using Microsoft.Xna.Framework;

namespace Jypeli.Effects
{
    public class Smoke : ParticleSystem
    {
        private double addTime;
        private double width;

        public Smoke()
            : base(Game.LoadImageFromResources("smoke"), 100)
        {
            this.Angle = Angle.FromDegrees(90);
            this.width = 5;
        }

        public Smoke(Image particleImage, double width)
            : base(particleImage, (int)width*4)
        {
            this.Angle = Angle.FromDegrees(90);
            this.width = width;
        }

        protected override void InitializeParticles()
        {
            MinLifetime = 4.0;
            MaxLifetime = 4.2;
            
            MinScale = 70;
            MaxScale = 100;

            ScaleAmount = 1;

            AlphaAmount = 0.3;

            MinVelocity = 40;
            MaxVelocity = 60;

            MinAcceleration = 1;
            MaxAcceleration = 1;

            MinRotationSpeed = -MathHelper.PiOver4;
            MaxRotationSpeed = MathHelper.PiOver4;

        }

        protected override Vector GiveRandomDirection()
        {
            return Vector.FromLengthAndAngle(1, Angle + Angle.FromDegrees(RandomGen.NextDouble(-5, 5)));
        }

        public override void Update(Time time)
        {
            double t = time.SinceLastUpdate.TotalSeconds;
            addTime += t;
            if (addTime > 0.1)
            {
                for (int i = 0; i < (int)Math.Ceiling(width/50); i++)
                {
                    base.AddEffect(RandomGen.NextDouble(Position.X - width / 2, Position.X + width / 2), Position.Y, 2);
                }
                    
                addTime = 0;
            }
            base.Update(time);
        }

        protected override void InitializeParticle(Particle p, Vector position)
        {
            base.InitializeParticle(p, position);

            if(!IgnoreWind)
            p.Acceleration = Game.Wind;
            
        }
    }
}