BEPUphysics

Code: Select all

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;

namespace ZipperEngine
{
    public class StaticCollideBox : Entity, StaticCollide
    {
        public BEPUphysics.Entities.Prefabs.Box box;
        public StaticCollideBox(float width, float height, float length)
            : base(Global.editor, Global.editor)//will not be selected
        {
            box = new BEPUphysics.Entities.Prefabs.Box(Vector3.Zero, width, height, length);
        }

        //here i set the dimensions
        public float DimX { get { return box.Width; } set { box.Width = value; } }
        public float DimY { get { return box.Height; } set { box.Height = value; } }
        public float DimZ { get { return box.Length; } set { box.Length = value; } }

        public override Microsoft.Xna.Framework.Vector3 Position
        {
            get
            {
                return box.Position;
            }
            set
            {
                box.Position = value;
//snip
            }
        }

        public override Microsoft.Xna.Framework.Quaternion Orientation
        {
            get
            {
                return box.Orientation;
            }
            set
            {
                box.Orientation = value;
//snip
            }
        }

        public override void Draw(Microsoft.Xna.Framework.GameTime gameTime, int method)
        {
            if (Global.showCollisionShapes)
            {
                //draw collison shape
                //little bit transparent
                //or own entity for selection?
                if (DynamicCollideBox.be == null)
                {
                    DynamicCollideBox.be = new BasicEffect(worldSpace.Device);
                }
                //and here i use the dimensions for the drawing scale matrix. and the graphics shows correct
                DynamicCollideBox.be.World = Matrix.CreateTranslation(box.Position) * Matrix.CreateFromQuaternion(Orientation) * Matrix.CreateScale(new Vector3(box.Width, box.Height, box.Length));
                DynamicCollideBox.be.View = worldSpace.currentCamera.ViewMatrix;
                DynamicCollideBox.be.Projection = worldSpace.currentCamera.ProjectionMatrix;

                switch (method)
                {
                    //snip
                }
                RasterizerState rs = new RasterizerState();
                rs.FillMode = FillMode.Solid;
                worldSpace.Device.RasterizerState = rs;
            }
        }

        public override void Update(Microsoft.Xna.Framework.GameTime gameTime)
        {
            //snip
        }

        public override void AddToSpace(Worldspace space)
        {
            space.PhysicSpace.Add(box);
        }

        public override void RemoveFromSpace(Worldspace space)
        {
            space.PhysicSpace.Remove(box);
        }
    }
}

Code: Select all

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using BEPUphysics.Entities.Prefabs;
using Microsoft.Xna.Framework;

namespace BEPUphysicsDemos.Demos
{
    public class BoxUpdateBugDemo : StandardDemo
    {
        public override string Name
        {
            get { return "BoxUpdateBug"; }
        }

        System.Timers.Timer t = new System.Timers.Timer(4000);

        Box box;

        Sphere sphere;
        public BoxUpdateBugDemo(DemosGame game)
            : base(game)
        {
            box = new Box(Vector3.Zero, 1, 1, 1);//box which should be modified
            box.Material.Bounciness = 1;
            Space.Add(box);

            sphere = new Sphere(new Vector3(0, 10, 0), 1,1);//then i drop a sphere on it
            sphere.Material.Bounciness = 1;
            Space.Add(sphere);

            t.Elapsed += new System.Timers.ElapsedEventHandler(t_Elapsed);
            t.Start();
        }

        void t_Elapsed(object sender, System.Timers.ElapsedEventArgs e)
        {
            sphere.Position = new Vector3(0, 10, 0);//redrop yay
            sphere.LinearVelocity = Vector3.Zero;
            sphere.AngularVelocity = Vector3.Zero;
            if (box.Height == 1)//change the height of the box
            {
                //box.Width = 5;
                box.Height = 5;
                //box.Width = 5;
            }
            else
            {
                //box.Width = 1;
                box.Height = 1;
                //box.Length = 1;
            }
        }
    }
}