public GameWorld(Game game, Camera cam) : base(game)
{
_cam = cam;
_tileMap = new TileMap();
_collisionEngine = new CollisionEngine();
CollisionComponent.CreatedCollisionComponent += RegisterCollisionBox;
}
public RaceEngine()
{
_collisionEngine = new CollisionEngine(4, 250);
m_physicsEngine = new PhysicsEngine();
m_obstacles = new List <TireObstacle>(100);
m_cars = new List <RaceCar>(4);
m_physicsEngine.UpdateForcesEvent += PhysicsEngine_UpdateForcesEvent;
}
public void CheckCollision()
{
if (CollisionEngine.CollisionCheck(new Rectangle((int)(pos.X - dims.X / 2), (int)(pos.Y - dims.Y / 2), (int)dims.X, (int)dims.Y), Globals.currWorld.levels[Globals.currWorld.currLevel].platforms))
{
parent.DeleteProjectile(this);
}
if (CollisionEngine.CollisionCheck(new Rectangle((int)pos.X, (int)pos.Y, (int)dims.X, (int)dims.Y), ((CollisionObject)Globals.currWorld.hero).GetCollisionBox()))
{
((Entity)Globals.currWorld.hero).GetHit(damage);
parent.DeleteProjectile(this);
}
}
/// <summary>
/// Allows the game to perform any initialization it needs to before starting to run.
/// This is where it can query for any required services and load any non-graphic
/// related content. Calling base.Initialize will enumerate through any components
/// and initialize them as well.
/// </summary>
protected override void Initialize()
{
this.IsMouseVisible = true;
var w = (float)graphics.PreferredBackBufferWidth;
var h = (float)graphics.PreferredBackBufferHeight;
CollisionEngine.Init(new Region(0, (float)w, 0, (float)h), 10);
PE = new PhysicsEngine();
var w0 = new VertWallBody(new Vector2(0, h / 2), h);
var w1 = new VertWallBody(new Vector2(w, h / 2), h);
var w2 = new HorizWallBody(new Vector2(w / 2, 0), w);
var w3 = new HorizWallBody(new Vector2(w / 2, h), w);
PE.MapBodies.Add(w0);
PE.MapBodies.Add(w1);
PE.MapBodies.Add(w2);
PE.MapBodies.Add(w3);
var c0 = new CircleBody(30, 300, new Vector2(600, h / 2));
c0.Velocity = -1000 * Vector2.UnitX;
PE.ActiveBodies.Add(c0);
Random rand = new Random();
int nx = 40;
int ny = 30;
var rad = 4f;
var buf = 0f;
var pos = new Vector2(w / 2 - nx * (2f * rad + buf) / 2f, h / 2 - ny * (2f * rad + buf) / 2f);
for (int xi = 0; xi < nx; xi++)
{
for (int yi = 0; yi < ny; yi++)
{
var cent = pos + new Vector2((2f * rad + buf) * xi, (2f * rad + buf) * yi);
var ball = new CircleBody(rad, rad, cent);
PE.ActiveBodies.Add(ball);
}
}
base.Initialize();
}
private void GenerateMaze(Player player)
{
var message = GetComponents <DebugMessageBuilder>().First();
var entireMaze = BoundingBox.CreateMerged(new Cell(0, 0).GetBoundingBox(), new Cell(_width - 1, _height - 1).GetBoundingBox());
var collisionEngine = new CollisionEngine(entireMaze);
Add(collisionEngine);
var chunkManager = new ChunkManager(RenderContext, message, collisionEngine, _width, _height);
collisionEngine.Add(player);
Add(chunkManager);
}
/// <summary>
/// Calculates all the collisionforces acting on a CollisionObject.
/// </summary>
/// <param name="obj">The CollisionObject on which the collisions act.</param>
/// <param name="objects">The other CollisionObjects which act on obj.</param>
/// <returns>The sum of all the collision forces.</returns>
public static Vector2 CollisionForces(CollisionObject obj, CollisionObject[] objects)
{
Vector2 output = Vector2.Zero;
for (int j = 0; j < objects.Length; j++)
{
if (obj != objects[j])
{
Vector2 collision = CollisionEngine.CollisionSide(obj, objects[j]);
if (collision != Vector2.Zero)
{
output += CollisionForce(obj, objects[j], collision);
}
}
}
return(output);
}
public AbstractScene(string sceneName, bool preload = false, bool alwaysActive = false, bool useLoadingScreen = false)
{
if (sceneName == null || sceneName.Length == 0)
{
throw new Exception("The scene must have a non-null, non-empty unique name!");
}
this.sceneName = sceneName;
Preload = preload;
AlwaysActive = alwaysActive;
UseLoadingScreen = useLoadingScreen;
UI = new UserInterface();
LayerManager = new LayerManager(this);
LayerManager.InitLayers();
CollisionEngine = new CollisionEngine();
GridCollisionChecker = new GridCollisionChecker();
}
public Game1()
{
graphics = new GraphicsDeviceManager(this);
Content.RootDirectory = "Content";
currentStage = new Stage();
currentStage.camera.position.Y = -0;
currentCollisionEngine = new CollisionEngines.Octree.OctreeEngine(new BoundingBox(new Vector3(-1024, -1024, -1024), new Vector3(1024, 1024, 1024)), 4);
Actors.Misc.Box box1 = new Actors.Misc.Box(new Vector3(-100, -100, -100), new Vector3(100, 100, 100));
box1.position = new Vector3(-200, 0, 0);
box1.velocity = new Vector3(1, (float)0.4, 0);
Actors.Misc.Box box2 = new Actors.Misc.Box(new Vector3(-50, -50, -100), new Vector3(50, 50, 50));
box2.position = new Vector3(200, 0, 0);
box2.velocity = new Vector3(-1, (float)-0.3, 0);
Actors.Misc.Box wall1 = new Actors.Misc.Box(new Vector3(-1, -200, -300), new Vector3(1, 200, 300));
wall1.position = new Vector3(-300, 0, 0);
Actors.Misc.Box wall2 = new Actors.Misc.Box(new Vector3(-1, -200, -300), new Vector3(1, 200, 300));
wall2.position = new Vector3(300, 0, 0);
Actors.Misc.Box wall3 = new Actors.Misc.Box(new Vector3(-300, -1, -300), new Vector3(300, 1, 300));
wall3.position = new Vector3(0, -200, 0);
Actors.Misc.Box wall4 = new Actors.Misc.Box(new Vector3(-300, -1, -300), new Vector3(300, 1, 300));
wall4.position = new Vector3(0, 200, 0);
currentStage.RegisterActor(box1);
currentStage.RegisterActor(box2);
currentStage.RegisterActor(wall1);
currentStage.RegisterActor(wall2);
currentStage.RegisterActor(wall3);
currentStage.RegisterActor(wall4);
}
/// <summary>
/// Load graphics content for the game.
/// </summary>
public override void LoadContent()
{
if (content == null)
content = new ContentManager(ScreenManager.Game.Services, "Content");
_collisions = new CollisionEngine();
_objectsToBeWrapped = new List<hasPosition2D>();
DisplayedMessages = new Dictionary<string, string>();
SpriteBatchDrawable = new SpriteBatch(ScreenManager.Game.GraphicsDevice);
// A real game would probably have more content than this sample, so
// it would take longer to load. We simulate that by delaying for a
// while, giving you a chance to admire the beautiful loading screen.
// Note by Jason: Awesome... lol
Thread.Sleep(1000);
FontSprite = ScreenManager.Game.Content.Load<SpriteFont>("Fonts\\Arial");
MoritoModel = ScreenManager.Game.Content.Load<Model>("Models\\morito");
BulletModel = ScreenManager.Game.Content.Load<Model>("Models\\missile");
//setup a camera
Camera1 = new Camera();
Level = new Level();
Level.LoadContent(this);
//Level.saveLevelToFile(Environment.GetFolderPath(Environment.SpecialFolder.Desktop) + @"\MoritoLevel.xml");
// once the load has finished, we use ResetElapsedTime to tell the game's
// timing mechanism that we have just finished a very long frame, and that
// it should not try to catch up.
ScreenManager.Game.ResetElapsedTime();
}
/// <summary>
/// Splits the maze into chunks.
/// </summary>
/// <param name="renderContext"></param>
/// <param name="cells"></param>
/// <param name="collisionEngine"></param>
/// <returns></returns>
private List <MazeChunk> GenerateChunks(IRenderContext renderContext, Cell[,] cells, CollisionEngine collisionEngine)
{
var maxSize = MazeChunk.ChunkSize;
// instead of creating arrays per chunk we point to the source array by using indices, this is far faster and saves ram
var w = cells.GetLength(0);
var h = cells.GetLength(1);
var chunks = new List <MazeChunk>();
int yCount = (int)Math.Ceiling(h / (float)maxSize);
int xCount = (int)Math.Ceiling(w / (float)maxSize);
for (int y = 0; y < yCount; y++)
{
for (int x = 0; x < xCount; x++)
{
var startX = x * maxSize;
var startY = y * maxSize;
var endX = Math.Min((x + 1) * maxSize, w);
var endY = Math.Min((y + 1) * maxSize, h);
var id = y * yCount + x;
var chunk = new MazeChunk(renderContext, cells, startX, startY, endX, endY, id, collisionEngine);
chunks.Add(chunk);
}
}
return(chunks);
}
public ChunkManager(IRenderContext renderContext, DebugMessageBuilder messageBuilder, CollisionEngine collisionEngine, int width, int height)
{
_messageBuilder = messageBuilder;
var start = new Cell(0, 0).GetBoundingBox();
var end = new Cell(width - 1, height - 1).GetBoundingBox();
var fullGrid = BoundingBox.CreateMerged(start, end);
_quadtree = new Quadtree <MazeChunk>(fullGrid);
var cells = GenerateNewMaze(width, height);
var chunks = GenerateChunks(renderContext, cells, collisionEngine);
_totalVertices = chunks.Sum(c => c.Vertices);
_totalChunks = chunks.Count;
foreach (var c in chunks)
{
_quadtree.Add(c);
}
}
/// <summary>
/// Determines what the AI will do based on wether the player is on view and where he is on the platform.
/// </summary>
public void ComputeInput()
{
if (VisionBox().Intersects(((CollisionObject)Globals.currWorld.hero).GetCollisionBox()) || VisionBox().Contains(((CollisionObject)Globals.currWorld.hero).GetCollisionBox()) || ((CollisionObject)Globals.currWorld.hero).GetCollisionBox().Contains(VisionBox()))
{
if (!CollisionEngine.CollisionCheck(Globals.currWorld.levels[Globals.currWorld.currLevel].platforms, new Segment(new Vector2(GetCollisionBox().Center.X, GetCollisionBox().Top), new Vector2(Globals.currWorld.hero.GetCollisionBox().Center.X, Globals.currWorld.hero.GetCollisionBox().Top))))
{
if (!isAttacking)
{
viewingDistance *= 2;
}
if (pos.X > Globals.currWorld.hero.pos.X)
{
lastDirRight = false;
}
else
{
lastDirRight = true;
}
Attack();
vector = Vector2.Zero;
isAttacking = true;
}
}
else
{
if (isAttacking)
{
viewingDistance /= 2;
}
isAttacking = false;
attackingCounter = new TimeSpan(0, 0, 0, 1, 250);
}
if (!isAttacking)
{
if (physicsVector.Y > 0.1f)
{
walkingSegment = null;
}
else
{
if (walkingSegment != null)
{
if (Math.Sign(physicsVector.X) != Math.Sign(goingTo.X - pos.X) && Math.Sign(physicsVector.X) != 0 && Math.Abs(physicsVector.X) > 0.5)
{
if (goingTo == walkingSegment.defPoint1)
{
goingTo = walkingSegment.defPoint2;
}
else
{
goingTo = walkingSegment.defPoint1;
}
}
if (Math.Abs(goingTo.X - pos.X) < dims.X)
{
if (goingTo == walkingSegment.defPoint1)
{
goingTo = walkingSegment.defPoint2;
}
else
{
goingTo = walkingSegment.defPoint1;
}
}
if (Math.Sign(goingTo.X - pos.X) < 0)
{
if (vector.X > -speed)
{
vector.X += Math.Sign(goingTo.X - pos.X) * walkingAccelaration;
}
}
else
{
if (vector.X < speed)
{
vector.X += Math.Sign(goingTo.X - pos.X) * walkingAccelaration;
}
}
}
else
{
FindNewWalkingSegment();
if (walkingSegment != null)
{
if (lastDirRight)
{
if (walkingSegment.defPoint1.X > walkingSegment.defPoint2.X)
{
goingTo = walkingSegment.defPoint1;
}
else
{
goingTo = walkingSegment.defPoint2;
}
}
else
{
if (walkingSegment.defPoint1.X > walkingSegment.defPoint2.X)
{
goingTo = walkingSegment.defPoint2;
}
else
{
goingTo = walkingSegment.defPoint1;
}
}
}
}
}
}
}
/// <summary>
/// Initializes a new maze chunk by generating the appropriate mesh for the specific part of the mesh.
/// </summary>
/// <param name="renderContext"></param>
/// <param name="cells">The cells from which to generate the mesh. Note that a subset of cells is used by using the indices.</param>
/// <param name="startXIndex">The start x index inside the cell array to use.</param>
/// <param name="startYIndex">The start y index inside the cell array to use.</param>
/// <param name="endX">The (excluded) end x value inside the cell array. Cells from <paramref name="startXIndex"/> to <paramref name="endX"/> - 1 are used.</param>
/// <param name="endY">The (excluded) end y value inside the cell array. Cells from <paramref name="startYIndex"/> to <paramref name="endY"/> - 1 are used.</param>
/// <param name="id">The id is used to give each chunk floor a different color so the user can easily see where chunks end.</param>
/// <param name="collisionEngine">The collision engine to which to add the walls to.</param>
public MazeChunk(IRenderContext renderContext, Cell[,] cells, int startXIndex, int startYIndex, int endX, int endY, int id, CollisionEngine collisionEngine)
{
var floorMeshBuilder = new TexturedMeshDescriptionBuilder();
var wallMeshBuilder = GenerateWallMesh(cells, startXIndex, startYIndex, endX, endY, collisionEngine);
// get a boundingbox that contains the entire chunk by using CreateMerged on two cells that are at the opposite end of the chunk
var topLeft = cells[startXIndex, startYIndex];
var bottomRight = cells[endX - 1, endY - 1];
var merged = BoundingBox.CreateMerged(topLeft.GetBoundingBox(), bottomRight.GetBoundingBox());
// generate only one big floor plane for this chunk
floorMeshBuilder.AddPlane(merged, Plane.NegativeY, false, TileSize);
BoundingBox = merged;
_maze = renderContext.MeshCreator.CreateMesh(wallMeshBuilder);
_floor = renderContext.MeshCreator.CreateMesh(floorMeshBuilder);
_wallBrush = new SolidColorBrush(Color.DarkGray);
_floorBrush = new SolidColorBrush(_colors[id % _colors.Length]);
}
/// <summary>
/// This method will generate the mesh structure inside the provided boundaries. It will already reduce the vertex count by merging walls within a corridor.
/// Note that this is not the most efficient algorithm (in regards to optimization). It is however very fast.
/// It runs two steps: first only merging in x direction then in y direction, this will result in a mesh like this.
/// <example>
/// XXX
/// X X
/// XXX
/// </example>
/// into
/// <example>
/// 111
/// 2 3
/// 444
/// </example>
/// Note that the left side (124) could technically also be merged if the algorithm would consider faces, however since it is cell-based it will only merge each cell once.
/// </summary>
/// <param name="cells"></param>
/// <param name="startXIndex"></param>
/// <param name="startYIndex"></param>
/// <param name="endX"></param>
/// <param name="endY"></param>
/// <param name="collisionEngine"></param>
/// <returns></returns>
public static IMeshDescription GenerateWallMesh(Cell[,] cells, int startXIndex, int startYIndex, int endX, int endY, CollisionEngine collisionEngine)
{
var skip = MergeCells(cells, startXIndex, startYIndex, endX, endY);
var wallMeshBuilder = new TexturedMeshDescriptionBuilder();
for (int y = startYIndex; y < endY; y++)
{
for (int x = startXIndex; x < endX; x++)
{
var c = cells[x, y];
var cellBox = c.GetBoundingBox();
if (c.Mode == CellMode.Wall)
{
if (skip[x - startXIndex, y - startYIndex] == 3)
{
// has already been merged with previous cells, do not add again
continue;
}
// look at the cells to the right if they can be merged
if (x + 1 < endX)
{
// walk to the right as long as possible
int count = 0;
int i = 1;
while (x + i < endX && skip[x - startXIndex + i, y - startYIndex] == 1)
{
count = i;
i++;
}
// yes, merge
var lastCell = cells[x + count, y].GetBoundingBox();
cellBox = BoundingBox.CreateMerged(cellBox, lastCell);
// flag all as already merged
if (count > 0)
{
do
{
skip[x - startXIndex + count, y - startYIndex] = 3;
count--;
} while (count > 0);
wallMeshBuilder.AddBox(cellBox, TileSize);
collisionEngine.Add(new Wall(cellBox));
continue;
}
}
// look at the cells bellow if they can be merged
if (y + 1 < endY)
{
int count = 0;
int i = 1;
while (y + i < endY && skip[x - startXIndex, y - startYIndex + i] == 2)
{
count = i;
i++;
}
// yes, merge
var lastCell = cells[x, y + count].GetBoundingBox();
cellBox = BoundingBox.CreateMerged(cellBox, lastCell);
// flag all as already merged
do
{
skip[x - startXIndex, y - startYIndex + count] = 3;
count--;
} while (count > 0);
wallMeshBuilder.AddBox(cellBox, TileSize);
collisionEngine.Add(new Wall(cellBox));
continue;
}
// no merging possible, just place default cell sized box
wallMeshBuilder.AddBox(cellBox, TileSize);
collisionEngine.Add(new Wall(cellBox));
}
}
}
return(wallMeshBuilder);
}
