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我正在制作一个基于瓷砖的游戏，我使用 perlin 的噪声生成一个随机地图。当我的地图是 100 * 100 瓷砖时，它工作正常，但是当我的地图是 1000 * 1000 瓷砖时，我会遇到性能问题，我通过检查我的瓷砖是否在相机的视野中而不是绘制它们来解决其中的大部分问题，但它仍然是错误的。这是我的一些代码：

正在加载

void loadMap(int size)
{
    blocks.clear();
    float[][] seed1 =  Perlin.GenerateWhiteNoise(size, size);
    float[][] seed = Perlin.GenerateSmoothNoise(seed1, 3);
    for (int i = 0; i < seed.length; i++)
    {
        for ( int j = 0; j < seed[i].length; j++)
        {
            if(seed[i][j] < 0.5)
            {
                blocks.add(new Block(i * Block.blockSize, j * Block.blockSize, eBlockType.WATER));
            }

            else if(seed[i][j] > 0.8)
            {
                blocks.add(new Block(i * Block.blockSize, j * Block.blockSize, eBlockType.GRASS));
            }

            else
            {
                blocks.add(new Block(i * Block.blockSize, j * Block.blockSize, eBlockType.SAND));
            }
        }
    }
}

绘画

public void paintComponent(Graphics g)
{
    super.paintComponent(g);
    Graphics2D g2 = (Graphics2D)g;
    g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
    cameraX = -player.getX() + getWidth()/2;
    cameraY = -player.getY() + getHeight()/2;
    g.translate(cameraX, cameraY);
    for(Block block : blocks)
    {
        //System.out.println(block.getX() + " " + cameraX);
        Rectangle cameraView = new Rectangle(-(cameraX+cameraPadding), -(cameraY+cameraPadding), this.getWidth()+cameraPadding , this.getHeight()+cameraPadding);
        if(cameraView.contains(block.getX(), block.getY()))
        {
            block.draw(g2);
        }

        else if(block.getX() > cameraView.getMaxX() && block.getY() > cameraView.getMaxY())
        {
            break;
        }
    }

    player.draw(g2);
}

块类

package com.ymail.sanchixx.game;

import java.awt.Graphics;
import java.awt.Rectangle;

public class Block
{

    enum eBlockType
    {
        NULL(-1), STONE(0), STONEBRICK(1), // these are collision
        COLLISION_BLOCKS(2), // PlaceHolder
        GRASS(3), PLANK(4), WATER(5), SAND(6); // these are non-collision

        private int code;

        eBlockType(int c) 
        {
            code = c;
        }

        public int getCode() 
        {
            return code;
        }
    };

    eBlockType m_type = eBlockType.NULL;
    int m_x;
    int m_y;
    static int blockSize = 16;

    Block(int x, int y, eBlockType type)
    {
        m_x = x;
        m_y = y;
        m_type = type;
    }

    boolean isNonCollisionBlock()
    {
        if(m_type.getCode() > eBlockType.COLLISION_BLOCKS.getCode())
        {
            return true;
        }

        return false;
    }

    static boolean collisionDown(Entity e, int v)
    {
        Rectangle player = new Rectangle(e.getX(), e.getY() + v, e.getWidth(), e.getHeight());
        for(Block i : Game.blocks)
        {
            if(!i.isNonCollisionBlock())
            {
                int blockWidth = blockSize;
                int blockHeight = blockSize;
                Rectangle block = new Rectangle(i.getX(), i.getY(), blockWidth, blockHeight);
                if (player.intersects(block))
                {
                    e.setY(e.getY() - (e.getY() - (i.getY() - e.getHeight())));
                    return true;
                }
            }
        }
        return false;
    }

    static boolean collisionUp(Entity e, int v)
    {
        Rectangle player = new Rectangle(e.getX(), e.getY() -v, e.getWidth(), e.getHeight());
        for(Block i : Game.blocks)
        {
            if(!i.isNonCollisionBlock())
            {
                int blockWidth = blockSize;
                int blockHeight = blockSize;
                Rectangle block = new Rectangle(i.getX(), i.getY(), blockWidth, blockHeight);
                if (player.intersects(block))
                {
                    e.setY(e.getY() - (e.getY() - (i.getY())) + blockHeight);
                    return true;
                }
            }
        }
        return false;
    }

    static boolean collisionRight(Entity e, int v)
    {
        Rectangle player = new Rectangle(e.getX() + v, e.getY(), e.getWidth(), e.getHeight());
        for(Block i : Game.blocks)
        {
            if(!i.isNonCollisionBlock())
            {
                int blockWidth = blockSize;
                int blockHeight = blockSize;
                Rectangle block = new Rectangle(i.getX(), i.getY(), blockWidth, blockHeight);
                if (player.intersects(block))
                {
                    e.setX(e.getX() - (e.getX() - (i.getX() - e.getWidth())));
                    return true;
                }
            }
        }
        return false;
    }

    static boolean collisionLeft(Entity e, int v)
    {
        Rectangle player = new Rectangle(e.getX() - v, e.getY(), e.getWidth(), e.getHeight());
        for(Block i : Game.blocks)
        {
            if(!i.isNonCollisionBlock())
            {
                int blockWidth = blockSize;
                int blockHeight = blockSize;
                Rectangle block = new Rectangle(i.getX(), i.getY(), blockWidth, blockHeight);
                if (player.intersects(block))
                {
                    e.setX(e.getX() - (e.getX() - (i.getX())) + e.getWidth());
                    return true;
                }
            }
        }
        return false;
    }

    static Boolean swimmingInBlock(Entity e, eBlockType type)
    {
        Rectangle player = new Rectangle(e.getX(), e.getY() + e.getHeight()/2, e.getWidth(), e.getHeight()/2);
        for(Block i : Game.blocks)
        {
            if(i.isNonCollisionBlock())
            {
                int blockWidth = blockSize;
                int blockHeight = blockSize;
                Rectangle block = new Rectangle(i.getX(), i.getY(), blockWidth, blockHeight);
                if (player.intersects(block))
                {
                    if(i.getType() != type)
                    {
                        return false;
                    }
                }
            }
        }

        return true;
    }

    eBlockType getType()
    {
        return m_type;
    }

    int getX()
    {
        return m_x;
    }

    int getY()
    {
        return m_y;
    }

    void draw(Graphics g)
    {
        switch(m_type)
        {
        case GRASS:
            g.drawImage(Game.blockImg[0], m_x, m_y, null);
            break;
        case WATER:
            g.drawImage(Game.blockImg[4], m_x, m_y, null);
            break;
        case SAND:
            g.drawImage(Game.blockImg[6], m_x, m_y, null);
            break;
        case STONE:
            g.drawImage(Game.blockImg[1], m_x, m_y, null);
            break;

        default:
            break;
        }
    }
}

谢谢

4

1 回答 1

1

即使您选择仅渲染某些图块，您仍在访问 N 2 个图块以测试可见性。相反，使用享元模式仅渲染可见瓦片，其中可见性只能由面板/瓦片几何图形确定。此处概述的方法用于优化JTable.

于 2013-10-06T17:02:54.930 回答