Question

我有一张1280 x 1280像素的地图。我在屏幕上绘制了32 x 32像素的图块。我还给每个图块一个32乘32像素的矩形。每个瓷砖也有一个布尔告诉我它是否被阻止。我的精灵有一个32 x 32像素的矩形。

当精灵和平铺与左上角相交时，平铺的大多数像素是唯一与精灵矩形接触的像素。

我试着给矩形充气而不做任何改变。

Core.playerOneSpriteRectangle = new Rectangle((int)Core.playerOneSprite.Position.X, (int)Core.playerOneSprite.Position.Y, Engine.TileWidth, Engine.TileHeight);

        #region Player One Controls
        // Player One Controls
        Tile tile;
        Rectangle destination = new Rectangle(0, 0, Engine.TileWidth, Engine.TileHeight);
        if (keyState.IsKeyDown(Keys.W) || (gamePadOneState.DPad.Up == ButtonState.Pressed))
        {
            Core.playerOneSprite.CurrentAnimation = AnimationKey.Up;
            foreach (var layer in tileMapLayers)
            {
                for (var y = 0; y < layer.Height; y++)
                {
                    destination.Y = y * Engine.TileHeight;
                    for (var x = 0; x < layer.Width; x++)
                    {
                        tile = layer.GetTile(x, y);

                        destination.X = x * Engine.TileWidth;

                        // Check Collision With Tiles
                        if (Core.playerOneSpriteRectangle.Intersects(destination) && tile.TileBlocked)
                        {
                            playerOneMotion.Y = destination.Bottom;
                            //Console.WriteLine("Intersected with" + destination + tile.TileBlocked);
                        }
                        else if (Core.playerOneSpriteRectangle.Intersects(destination) && tile.TileBlocked == false)
                        {
                            playerOneMotion.Y = -1f;
                        }  
                    }
                }
            }
        }

我正在尝试为每个图块创建矩形，因此我的精灵不会遍历它们。

更新

这是我在修改建议后的代码。

Tile tile;
        Point playertile = new Point((int)Core.playerOneSprite.Position.X / Engine.TileWidth, (int)Core.playerOneSprite.Position.Y / Engine.TileHeight);

        if (keyState.IsKeyDown(Keys.W) || (gamePadOneState.DPad.Up == ButtonState.Pressed))
        {
            Core.playerOneSprite.CurrentAnimation = AnimationKey.Up;
            foreach (var layer in GraelenAreaOne.graelenAreaOneSplatterTileMapLayers)
            {
                tile = layer.GetTile(playertile.X, playertile.Y - 1);

                // Check Collision With Tiles
                if (tile.TileBlocked)
                {
                    playerOneMotion.Y = 0;

                    //Console.WriteLine("Intersected with" + destination + tile.TileBlocked);
                }
                else
                {
                    playerOneMotion.Y = -1;
                }  
            }
        }

我现在能够与瓷砖碰撞但是我的精灵矩形没有正确交叉。精灵纹理的位置0,0位于左上角，只有1x1像素。为什么矩形不包含整个纹理，因为它设置为32x32？

Answer 1

你应该检查你想要去的瓷砖是否是 walkable ，而不必费心自己使用矩形。

一些伪代码：

// Convert pixel coordinates to tile coords
Point playerTile = new Point(player.X / tileWidth, player.Y / tileHeight);
Point targetTile = new Point(target.X / tileWidth, target.Y / tileHeight);

// Take a decision 
if(Direction == Up)
    var tile = layer.GetTile(playerTile.X, playerTile.Y - 1);
    if(tile == walkable)
        // Move to your tile
    else
        ...

此外，这里是我前一段时间编写的一些代码，您可能会感兴趣的是通过绘制来优化绘制水平，只绘制可见的内容。

https://gamedev.stackexchange.com/questions/29121/organize-a-game-set/29930#29930

enter image description here

注意：对于这类问题，https://gamedev.stackexchange.com/绝对是一个更好的地方。

修改

这是一个适合我的简单示例：

请注意，当玩家无法移动到平铺时，我返回。

Tiles：0是步行，1是墙，2是玩家

using System; using System.Linq; using System.Windows; using System.Windows.Navigation; using Microsoft.Phone.Controls; using Microsoft.Xna.Framework; using Microsoft.Xna.Framework.Content; using Microsoft.Xna.Framework.Graphics; using Microsoft.Xna.Framework.Input.Touch; using Point = Microsoft.Xna.Framework.Point; namespace SlXnaApp1 { public partial class GamePage : PhoneApplicationPage { private readonly GameTimer _timer; private int[] _levels; private Point _player; private Texture2D _t1; private Texture2D _t2; private Texture2D _t3; private Texture2D[] _textures; private ContentManager _contentManager; private SpriteBatch _spriteBatch; public GamePage() { InitializeComponent(); // Get the content manager from the application _contentManager = (Application.Current as App).Content; // Create a timer for this page _timer = new GameTimer(); _timer.UpdateInterval = TimeSpan.FromTicks(333333); _timer.Update += OnUpdate; _timer.Draw += OnDraw; } protected override void OnNavigatedTo(NavigationEventArgs e) { // Set the sharing mode of the graphics device to turn on XNA rendering var graphicsDevice = SharedGraphicsDeviceManager.Current.GraphicsDevice; graphicsDevice.SetSharingMode(true); // Create a new SpriteBatch, which can be used to draw textures. _spriteBatch = new SpriteBatch(graphicsDevice); // TODO: use this.content to load your game content here _t1 = new Texture2D(graphicsDevice, 32, 32); _t1.SetData(Enumerable.Repeat(Color.Red, 32*32).ToArray()); _t2 = new Texture2D(graphicsDevice, 32, 32); _t2.SetData(Enumerable.Repeat(Color.Green, 32*32).ToArray()); _t3 = new Texture2D(graphicsDevice, 32, 32); _t3.SetData(Enumerable.Repeat(Color.Blue, 32*32).ToArray()); _textures = new[] {_t1, _t2, _t3}; _levels = new int[4*4] { 2, 0, 0, 0, 0, 0, 1, 0, 1, 1, 1, 0, 0, 0, 0, 1, }; _player = new Point(); TouchPanel.EnabledGestures = GestureType.Flick; // Start the timer _timer.Start(); base.OnNavigatedTo(e); } protected override void OnNavigatedFrom(NavigationEventArgs e) { // Stop the timer _timer.Stop(); // Set the sharing mode of the graphics device to turn off XNA rendering SharedGraphicsDeviceManager.Current.GraphicsDevice.SetSharingMode(false); base.OnNavigatedFrom(e); } /// <summary> /// Allows the page to run logic such as updating the world, /// checking for collisions, gathering input, and playing audio. /// </summary> private void OnUpdate(object sender, GameTimerEventArgs e) { Vector2 vector = new Vector2(); while (TouchPanel.IsGestureAvailable) { var gestureSample = TouchPanel.ReadGesture(); var vector2 = gestureSample.Delta; vector2.Normalize(); vector = new Vector2((float) Math.Round(vector2.X), (float) Math.Round(vector2.Y)); } Direction direction = new Direction(); if (vector.X > 0) direction = Direction.Right; else if (vector.X < 0) direction = Direction.Left; else if (vector.Y < 0) direction = Direction.Up; else if (vector.Y > 0) direction = Direction.Down; Point newPos = new Point(); switch (direction) { case Direction.None: return; case Direction.Up: if (GetTile(_player.X, _player.Y - 1) == 0) newPos = new Point(_player.X, _player.Y - 1); else return; break; case Direction.Down: if (GetTile(_player.X, _player.Y + 1) == 0) newPos = new Point(_player.X, _player.Y + 1); else return; break; case Direction.Left: if (GetTile(_player.X - 1, _player.Y) == 0) newPos = new Point(_player.X - 1, _player.Y); else return; break; case Direction.Right: if (GetTile(_player.X + 1, _player.Y) == 0) newPos = new Point(_player.X + 1, _player.Y); else return; break; default: throw new ArgumentOutOfRangeException(); } SetTile(_player.X, _player.Y, 0); SetTile(newPos.X, newPos.Y, 2); _player = newPos; } private int GetTile(int x, int y) { return _levels[y*4 + x]; } private void SetTile(int x, int y, int value) { _levels[y*4 + x] = value; } /// <summary> /// Allows the page to draw itself. /// </summary> private void OnDraw(object sender, GameTimerEventArgs e) { SharedGraphicsDeviceManager.Current.GraphicsDevice.Clear(Color.CornflowerBlue); _spriteBatch.Begin(); for (int i = 0; i < _levels.Length; i++) { var tile = _levels[i]; Point point = new Point(i%4, i/4); var texture2D = _textures[tile]; _spriteBatch.Draw(texture2D, Vector2.Multiply(new Vector2(point.X, point.Y), 32), Color.White); } _spriteBatch.End(); } private enum Direction { None, Up, Down, Left, Right } } }

此外，由于我将我的关卡构建为一维数组的方式，因此当关注时，例如它位于x = 3，y = 0并向右移动时，向下移动;这是无意的，但是正常，因为我没有检查边界。为简单起见，您需要将您的关卡保持为二维数组。

平铺矩形碰撞

更新

1 个答案: