864 lines
26 KiB
C#
864 lines
26 KiB
C#
using FarseerPhysics;
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using FarseerPhysics.Collision;
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using FarseerPhysics.Common;
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using FarseerPhysics.Common.Decomposition;
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using FarseerPhysics.Dynamics;
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using FarseerPhysics.Dynamics.Contacts;
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using FarseerPhysics.Factories;
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using Lidgren.Network;
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using Microsoft.Xna.Framework;
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using Microsoft.Xna.Framework.Graphics;
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using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Linq;
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using System.Reflection;
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using System.Xml.Linq;
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using Voronoi2;
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namespace Subsurface
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{
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public enum Direction : byte
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{
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None = 0, Left = 1, Right = 2
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}
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class Submarine : Entity
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{
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public static List<Submarine> SavedSubmarines = new List<Submarine>();
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public static readonly Vector2 GridSize = new Vector2(16.0f, 16.0f);
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private static Submarine loaded;
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private static Vector2 lastPickedPosition;
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private static float lastPickedFraction;
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static string SaveFolder;
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Md5Hash hash;
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Vector2 speed;
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Vector2 targetPosition;
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Vector2 targetSpeed;
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private Rectangle borders;
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private Body hullBody;
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private string filePath;
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private string name;
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private double lastNetworkUpdate;
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//properties ----------------------------------------------------
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public string Name
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{
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get { return name; }
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}
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public static Vector2 LastPickedPosition
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{
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get { return lastPickedPosition; }
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}
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public static float LastPickedFraction
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{
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get { return lastPickedFraction; }
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}
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public List<Vector2> HullVertices
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{
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get;
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private set;
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}
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public Md5Hash Hash
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{
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get
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{
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if (hash != null) return hash;
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XDocument doc = OpenDoc(filePath);
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hash = new Md5Hash(doc);
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return hash;
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}
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}
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public static Submarine Loaded
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{
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get { return loaded; }
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}
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public static Rectangle Borders
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{
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get
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{
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return (loaded==null) ? Rectangle.Empty : loaded.borders;
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}
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}
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public Vector2 Center
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{
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get { return new Vector2(borders.X+borders.Width/2, borders.Y - borders.Height/2); }
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}
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public Vector2 Position
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{
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get { return (Level.Loaded==null) ? Vector2.Zero : -Level.Loaded.Position; }
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}
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public string FilePath
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{
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get { return filePath; }
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}
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//constructors & generation ----------------------------------------------------
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public Submarine(string filePath, string hash = "")
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{
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this.filePath = filePath;
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try
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{
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name = System.IO.Path.GetFileNameWithoutExtension(filePath);
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}
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catch (Exception e)
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{
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DebugConsole.ThrowError("Error loading map " + filePath + "!", e);
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}
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if (hash != "")
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{
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this.hash = new Md5Hash(hash);
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}
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else
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{
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//XDocument doc = OpenDoc(filePath);
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//string md5Hash = ToolBox.GetAttributeString(doc.Root, "md5hash", "");
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//if (md5Hash == "" || md5Hash.Length < 16)
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//{
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// DebugConsole.ThrowError("Couldn't find a valid MD5 hash in the map file");
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//}
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//this.mapHash = new MapHash(md5Hash);
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}
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base.Remove();
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}
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private List<Vector2> GenerateConvexHull()
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{
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List<Vector2> points = new List<Vector2>();
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Vector2 leftMost = Vector2.Zero;
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foreach (Structure wall in Structure.wallList)
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{
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for (int x = -1; x <= 1; x += 2)
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{
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for (int y = -1; y <= 1; y += 2)
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{
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Vector2 corner = new Vector2(wall.Rect.X + wall.Rect.Width / 2.0f, wall.Rect.Y - wall.Rect.Height / 2.0f);
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corner.X += x * wall.Rect.Width / 2.0f;
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corner.Y += y * wall.Rect.Height / 2.0f;
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if (points.Contains(corner)) continue;
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points.Add(corner);
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if (leftMost == Vector2.Zero || corner.X < leftMost.X) leftMost = corner;
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}
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}
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}
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List<Vector2> hullPoints = new List<Vector2>();
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Vector2 currPoint = leftMost;
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Vector2 endPoint;
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do
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{
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hullPoints.Add(currPoint);
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endPoint = points[0];
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for (int i = 1; i < points.Count; i++)
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{
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if ((currPoint == endPoint)
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|| (Orientation(currPoint, endPoint, points[i]) == -1))
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{
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endPoint = points[i];
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}
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}
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currPoint = endPoint;
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}
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while (endPoint != hullPoints[0]);
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return hullPoints;
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}
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private static int Orientation(Vector2 p1, Vector2 p2, Vector2 p)
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{
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// Determinant
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float Orin = (p2.X - p1.X) * (p.Y - p1.Y) - (p.X - p1.X) * (p2.Y - p1.Y);
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if (Orin > 0)
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return -1; // (* Orientation is to the left-hand side *)
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if (Orin < 0)
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return 1; // (* Orientation is to the right-hand side *)
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return 0; // (* Orientation is neutral aka collinear *)
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}
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//drawing ----------------------------------------------------
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public static void Draw(SpriteBatch spriteBatch, bool editing = false)
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{
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for (int i = 0; i < MapEntity.mapEntityList.Count(); i++ )
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{
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MapEntity.mapEntityList[i].Draw(spriteBatch, editing);
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}
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}
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public static void DrawFront(SpriteBatch spriteBatch, bool editing = false)
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{
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for (int i = 0; i < MapEntity.mapEntityList.Count(); i++)
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{
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if (MapEntity.mapEntityList[i].sprite == null || MapEntity.mapEntityList[i].sprite.Depth < 0.5f)
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MapEntity.mapEntityList[i].Draw(spriteBatch, editing);
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}
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if (loaded == null) return;
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//foreach (HullBody hb in loaded.hullBodies)
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//{
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// spriteBatch.Draw(
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// hb.shapeTexture,
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// ConvertUnits.ToDisplayUnits(new Vector2(hb.body.Position.X, -hb.body.Position.Y)),
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// null,
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// Color.White,
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// -hb.body.Rotation,
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// new Vector2(hb.shapeTexture.Width / 2, hb.shapeTexture.Height / 2), 1.0f, SpriteEffects.None, 0.0f);
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//}
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}
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public static void DrawBack(SpriteBatch spriteBatch, bool editing = false)
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{
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for (int i = 0; i < MapEntity.mapEntityList.Count(); i++)
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{
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if (MapEntity.mapEntityList[i].sprite == null || MapEntity.mapEntityList[i].sprite.Depth >= 0.5f)
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MapEntity.mapEntityList[i].Draw(spriteBatch, editing);
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}
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}
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//math/physics stuff ----------------------------------------------------
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public static Vector2 MouseToWorldGrid(Camera cam)
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{
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Vector2 position = new Vector2(PlayerInput.GetMouseState.X, PlayerInput.GetMouseState.Y);
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position = cam.ScreenToWorld(position);
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return VectorToWorldGrid(position);
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}
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public static Vector2 VectorToWorldGrid(Vector2 position)
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{
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position.X = (float)Math.Floor(Convert.ToDouble(position.X / GridSize.X)) * GridSize.X;
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position.Y = (float)Math.Ceiling(Convert.ToDouble(position.Y / GridSize.Y)) * GridSize.Y;
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return position;
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}
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public static Rectangle AbsRect(Vector2 pos, Vector2 size)
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{
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if (size.X < 0.0f)
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{
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pos.X += size.X;
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size.X = -size.X;
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}
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if (size.Y < 0.0f)
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{
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pos.Y -= size.Y;
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size.Y = -size.Y;
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}
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return new Rectangle((int)pos.X, (int)pos.Y, (int)size.X, (int)size.Y);
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}
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public static bool RectContains(Rectangle rect, Vector2 pos)
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{
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return (pos.X > rect.X && pos.X < rect.X + rect.Width
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&& pos.Y < rect.Y && pos.Y > rect.Y - rect.Height);
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}
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public static bool RectsOverlap(Rectangle rect1, Rectangle rect2, bool inclusive=true)
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{
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if (inclusive)
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{
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return !(rect1.X > rect2.X + rect2.Width || rect1.X + rect1.Width < rect2.X ||
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rect1.Y < rect2.Y - rect2.Height || rect1.Y - rect1.Height > rect2.Y);
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}
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else
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{
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return !(rect1.X >= rect2.X + rect2.Width || rect1.X + rect1.Width <= rect2.X ||
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rect1.Y <= rect2.Y - rect2.Height || rect1.Y - rect1.Height >= rect2.Y);
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}
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}
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public static Body PickBody(Vector2 rayStart, Vector2 rayEnd, List<Body> ignoredBodies = null)
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{
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float closestFraction = 1.0f;
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Body closestBody = null;
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Game1.World.RayCast((fixture, point, normal, fraction) =>
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{
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if (fixture == null || fixture.CollisionCategories == Category.None) return -1;
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if (ignoredBodies != null && ignoredBodies.Contains(fixture.Body)) return -1;
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Structure structure = fixture.Body.UserData as Structure;
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if (structure != null && (structure.IsPlatform || !structure.HasBody)) return -1;
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if (fraction < closestFraction)
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{
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closestFraction = fraction;
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if (fixture.Body!=null) closestBody = fixture.Body;
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}
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return fraction;
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}
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, rayStart, rayEnd);
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lastPickedPosition = rayStart + (rayEnd - rayStart) * closestFraction;
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lastPickedFraction = closestFraction;
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return closestBody;
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}
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public static Body CheckVisibility(Vector2 rayStart, Vector2 rayEnd)
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{
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Body closestBody = null;
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float closestFraction = 1.0f;
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if (Vector2.Distance(rayStart,rayEnd)<0.01f)
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{
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closestFraction = 0.01f;
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return null;
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}
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Game1.World.RayCast((fixture, point, normal, fraction) =>
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{
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if (fixture == null || fixture.CollisionCategories != Physics.CollisionWall) return -1;
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Structure structure = fixture.Body.UserData as Structure;
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if (structure != null)
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{
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if (structure.IsPlatform || structure.StairDirection != Direction.None) return -1;
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int sectionIndex = structure.FindSectionIndex(ConvertUnits.ToDisplayUnits(point));
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if (sectionIndex > -1 && structure.SectionHasHole(sectionIndex)) return -1;
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}
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if (fraction < closestFraction)
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{
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closestBody = fixture.Body;
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closestFraction = fraction;
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}
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return closestFraction;
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}
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, rayStart, rayEnd);
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lastPickedPosition = rayStart + (rayEnd - rayStart) * closestFraction;
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lastPickedFraction = closestFraction;
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return closestBody;
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}
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public static Body PickBody(Vector2 point)
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{
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Body foundBody = null;
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AABB aabb = new AABB(point, point);
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Game1.World.QueryAABB(p =>
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{
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foundBody = p.Body;
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return true;
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}, ref aabb);
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return foundBody;
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}
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public static bool InsideWall(Vector2 point)
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{
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Body foundBody = PickBody(point);
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if (foundBody==null) return false;
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Structure wall = foundBody.UserData as Structure;
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if (wall == null || wall.IsPlatform) return false;
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return true;
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}
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//movement ----------------------------------------------------
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float collisionRigidness = 1.0f;
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public void Update(float deltaTime)
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{
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Vector2 translateAmount = speed * deltaTime;
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translateAmount += ConvertUnits.ToDisplayUnits(hullBody.Position) * collisionRigidness;
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if (targetPosition != Vector2.Zero && Vector2.Distance(targetPosition, Position) > 5.0f)
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{
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translateAmount += (targetPosition - Position) * 0.05f;
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}
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else
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{
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targetPosition = Vector2.Zero;
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}
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Translate(translateAmount);
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ApplyForce(CalculateBuoyancy());
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float dragCoefficient = 0.00001f;
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float speedLength = speed.Length();
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float drag = speedLength * speedLength * dragCoefficient * mass;
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if (speed != Vector2.Zero)
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{
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ApplyForce(-Vector2.Normalize(speed) * drag);
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}
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//hullBodies[0].body.LinearVelocity = -hullBodies[0].body.Position;
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//hullBody.SetTransform(Vector2.Zero , 0.0f);
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hullBody.LinearVelocity = -hullBody.Position/(float)Physics.step;
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if (collidingCell == null)
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{
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collisionRigidness = MathHelper.Lerp(collisionRigidness, 1.0f, 0.1f);
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return;
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}
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foreach (GraphEdge ge in collidingCell.edges)
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{
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Body body = PickBody(
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ConvertUnits.ToSimUnits(ge.point1+ Game1.GameSession.Level.Position),
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ConvertUnits.ToSimUnits(ge.point2 + Game1.GameSession.Level.Position), new List<Body>(){collidingCell.body});
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if (body == null || body.UserData == null) continue;
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Structure structure = body.UserData as Structure;
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if (structure == null) continue;
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structure.AddDamage(lastPickedPosition, DamageType.Blunt, 50.0f, 0.0f, 0.0f, true);
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}
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//hullBodies[0].body.SetTransform(Vector2.Zero, 0.0f);
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//position = hullBodies[0].body.Position;
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//Level.Loaded.Move(-ConvertUnits.ToDisplayUnits(position - prevPosition));
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//prevPosition = hullBodies[0].body.Position;
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}
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private Vector2 CalculateBuoyancy()
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{
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float waterVolume = 0.0f;
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float volume = 0.0f;
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foreach (Hull hull in Hull.hullList)
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{
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waterVolume += hull.Volume;
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volume += hull.FullVolume;
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}
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float waterPercentage = waterVolume / volume;
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float neutralPercentage = 0.1f;
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float buoyancy = neutralPercentage-waterPercentage;
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buoyancy *= mass * 10.0f;
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return new Vector2(0.0f, buoyancy);
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}
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public void SetPosition(Vector2 position)
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{
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//hullBodies[0].body.SetTransform(position, 0.0f);
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Level.Loaded.SetPosition(-position);
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//prevPosition = position;
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}
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private void Translate(Vector2 amount)
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{
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if (amount == Vector2.Zero) return;
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Level.Loaded.Move(-amount);
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}
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float mass = 10000.0f;
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public void ApplyForce(Vector2 force)
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{
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speed += force/mass;
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}
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//public void Move(Vector2 amount)
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//{
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// speed = Vector2.Lerp(speed, amount, 0.05f);
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//}
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VoronoiCell collidingCell;
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public bool OnCollision(Fixture f1, Fixture f2, Contact contact)
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{
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System.Diagnostics.Debug.WriteLine("colliding");
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VoronoiCell cell = f2.Body.UserData as VoronoiCell;
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if (cell==null) return true;
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Vector2 normal = -contact.Manifold.LocalNormal;
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Vector2 simSpeed = ConvertUnits.ToSimUnits(speed);
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float impact = -Vector2.Dot(simSpeed, normal);
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Vector2 u = Vector2.Dot(simSpeed, normal)*normal;
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Vector2 w = simSpeed - u;
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speed = ConvertUnits.ToDisplayUnits(w*f2.Body.Friction - u*0.5f);
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System.Diagnostics.Debug.WriteLine("IMPACT:"+impact);
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if (impact < 5.0f) return true;
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collisionRigidness = 0.8f;
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collidingCell = cell;
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return true;
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}
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public void OnSeparation(Fixture f1, Fixture f2)
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{
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collidingCell = null;
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}
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public override void FillNetworkData(Networking.NetworkEventType type, NetOutgoingMessage message, object data)
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{
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message.Write(NetTime.Now);
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message.Write(Position.X);
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message.Write(Position.Y);
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message.Write(speed.X);
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message.Write(speed.Y);
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}
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public override void ReadNetworkData(Networking.NetworkEventType type, NetIncomingMessage message)
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{
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double sendingTime = message.ReadDouble();
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if (sendingTime <= lastNetworkUpdate) return;
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//Vector2 newPosition =
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//if (newPosition == Position) return;
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//if ((newPosition - Position).Length() > 500.0f)
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//{
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// System.Diagnostics.Debug.WriteLine("Submarine has moved over 500 pixels since last update");
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// return;
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//}
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targetPosition = new Vector2(message.ReadFloat(), message.ReadFloat());
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speed = new Vector2(message.ReadFloat(), message.ReadFloat());
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lastNetworkUpdate = sendingTime;
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}
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//saving/loading ----------------------------------------------------
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public void Save()
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{
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SaveAs(filePath);
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}
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public void SaveAs(string filePath)
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{
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//if (filePath=="")
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//{
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// DebugConsole.ThrowError("No save file selected");
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// return;
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//}
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XDocument doc = new XDocument(new XElement((XName)name));
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foreach (MapEntity e in MapEntity.mapEntityList)
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{
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e.Save(doc);
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}
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hash = new Md5Hash(doc);
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doc.Root.Add(new XAttribute("md5hash", hash.MD5Hash));
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try
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{
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SaveUtil.CompressStringToFile(filePath, doc.ToString());
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}
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catch (Exception e)
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{
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DebugConsole.ThrowError("Saving submarine ''" + filePath + "'' failed!", e);
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}
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//doc.Save(filePath);
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}
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public static void SaveCurrent(string savePath)
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{
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if (loaded==null)
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{
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loaded = new Submarine(savePath);
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// return;
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}
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loaded.SaveAs(savePath);
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}
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public static void Preload(string folder)
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{
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SaveFolder = folder;
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//string[] mapFilePaths;
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Unload();
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SavedSubmarines.Clear();
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if (!Directory.Exists(SaveFolder))
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{
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try
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{
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Directory.CreateDirectory(SaveFolder);
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}
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catch
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{
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DebugConsole.ThrowError("Directory ''"+SaveFolder+"'' not found and creating the directory failed.");
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return;
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}
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}
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string[] filePaths;
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try
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{
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filePaths = Directory.GetFiles(SaveFolder);
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}
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catch (Exception e)
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{
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DebugConsole.ThrowError("Couldn't open directory ''" + SaveFolder + "''!", e);
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return;
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}
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foreach (string path in filePaths)
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{
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//Map savedMap = new Map(mapPath);
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SavedSubmarines.Add(new Submarine(path));
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}
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}
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private XDocument OpenDoc(string file)
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{
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XDocument doc = null;
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string extension = "";
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try
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{
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extension = System.IO.Path.GetExtension(file);
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}
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catch
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{
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DebugConsole.ThrowError("Couldn't load submarine ''" + file + "! (Unrecognized file extension)");
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return null;
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}
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if (extension == ".gz")
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{
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Stream stream = SaveUtil.DecompressFiletoStream(file);
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if (stream == null)
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{
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DebugConsole.ThrowError("Loading submarine ''" + file + "'' failed!");
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return null;
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}
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try
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{
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stream.Position = 0;
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doc = XDocument.Load(stream); //ToolBox.TryLoadXml(file);
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stream.Close();
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stream.Dispose();
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}
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catch
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{
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DebugConsole.ThrowError("Loading submarine ''" + file + "'' failed!");
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return null;
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}
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}
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else if (extension == ".xml")
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{
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try
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{
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doc = XDocument.Load(file);
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}
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catch
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{
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DebugConsole.ThrowError("Loading submarine ''" + file + "'' failed!");
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return null;
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}
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}
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else
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{
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DebugConsole.ThrowError("Couldn't load submarine ''" + file + "! (Unrecognized file extension)");
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return null;
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}
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return doc;
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}
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public void Load()
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{
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Unload();
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//string file = filePath;
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XDocument doc = OpenDoc(filePath);
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if (doc == null) return;
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foreach (XElement element in doc.Root.Elements())
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{
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string typeName = element.Name.ToString();
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Type t;
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try
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{
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// Get the type of a specified class.
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t = Type.GetType("Subsurface." + typeName + ", Subsurface", true, true);
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if (t == null)
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{
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DebugConsole.ThrowError("Error in " + filePath + "! Could not find a entity of the type ''" + typeName + "''.");
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continue;
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}
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}
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catch (Exception e)
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{
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DebugConsole.ThrowError("Error in " + filePath + "! Could not find a entity of the type ''" + typeName + "''.", e);
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continue;
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}
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try
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{
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MethodInfo loadMethod = t.GetMethod("Load");
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loadMethod.Invoke(t, new object[] { element });
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}
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catch (Exception e)
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{
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DebugConsole.ThrowError("Could not find the method ''Load'' in " + t + ".", e);
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}
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}
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List<Vector2> convexHull = GenerateConvexHull();
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HullVertices = convexHull;
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for (int i = 0; i < convexHull.Count; i++)
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{
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convexHull[i] = ConvertUnits.ToSimUnits(convexHull[i]);
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}
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convexHull.Reverse();
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//get farseer 'vertices' from vectors
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Vertices shapevertices = new Vertices(convexHull);
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AABB hullAABB = shapevertices.GetAABB();
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borders = new Rectangle(
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(int)ConvertUnits.ToDisplayUnits(hullAABB.LowerBound.X),
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(int)ConvertUnits.ToDisplayUnits(hullAABB.UpperBound.Y),
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(int)ConvertUnits.ToDisplayUnits(hullAABB.Extents.X * 2.0f),
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(int)ConvertUnits.ToDisplayUnits(hullAABB.Extents.Y * 2.0f));
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var triangulatedVertices = Triangulate.ConvexPartition(shapevertices, TriangulationAlgorithm.Bayazit);
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hullBody = BodyFactory.CreateCompoundPolygon(Game1.World, triangulatedVertices, 5.0f);
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hullBody.BodyType = BodyType.Dynamic;
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hullBody.CollisionCategories = Physics.CollisionMisc;
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hullBody.CollidesWith = Physics.CollisionLevel;
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hullBody.FixedRotation = true;
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hullBody.Awake = true;
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hullBody.SleepingAllowed = false;
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hullBody.GravityScale = 0.0f;
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hullBody.OnCollision += OnCollision;
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hullBody.OnSeparation += OnSeparation;
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//body.IsSensor = true;
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//body.SetTransform();
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//HullBody hullBody = new HullBody();
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//hullBody.body = body;
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////hullBody.shapeTexture = GUI.CreateRectangle(borders.Width, borders.Height);
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//hullBodies = new List<HullBody>();
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//hullBodies.Add(hullBody);
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MapEntity.LinkAll();
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foreach (Item item in Item.itemList)
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{
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foreach (ItemComponent ic in item.components)
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{
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ic.OnMapLoaded();
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}
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}
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//ID = 1;
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loaded = this;
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}
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public static Submarine Load(string file)
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{
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Unload();
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Submarine sub = new Submarine(file);
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sub.Load();
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return sub;
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}
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public static void Unload()
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{
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if (loaded == null) return;
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loaded.Remove();
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loaded.Clear();
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loaded = null;
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}
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private void Clear()
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{
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if (Game1.GameScreen.Cam != null) Game1.GameScreen.Cam.TargetPos = Vector2.Zero;
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Entity.RemoveAll();
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PhysicsBody.list.Clear();
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Ragdoll.list.Clear();
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Game1.World.Clear();
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}
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}
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}
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