Java - 使用Graphics2D矩形在面板中创建2D平铺图？ [英] Java - Creating a 2D tile map in a panel using Graphics2D Rectangles?
问题描述
我有10种不同类型的地形循环，5种不同的景观简介。基本上，我想要的程序是当我在一个组合框中选择一个特定的配置文件时，它描绘了这个风景和两个相对的两面（尽管我还不完全相同）
老实说，我没有在这个计划中取得很大进展。我应该如此使用Graphics2D和Rectangular，或者我应该切换到OpenGL或类似的东西？虽然我目前的Java经验，我不认为我会得到很远的没有帮助。无论如何，这里是我到目前为止：
public class Map扩展JPanel {
int n = 1;
int x; int y
int Area = 750;
public Color City = new Color（214,217,223）;
public Color沙漠=新颜色（255,204,102）;
public Color DirtRoad = new Color（153,102,0）;
public Color Forest = new Color（0,102,0）;
public Color Hills = new Color（51,153,0）;
public Color Lake = new Color（0,153,153）;
public Color Mountains = new Color（102,102,255）;
public Color Ocean = new Color（0,0,153）;
public Color PavedRoad = new Color（51,51,0）;
public Color Plains = new Color（102,153,0）;
public Rectangle blocks [];
public Map（）{
blocks = new Rectangle [750];
if（n == 1）{
setBackground（City）;
n = 2;
} else if（n == 2）{
setBackground（Desert）;
n = 3;
} else if（n == 3）{
setBackground（DirtRoad）;
n = 4;
} else if（n == 4）{
setBackground（Forest）;
n = 5;
} else if（n == 5）{
setBackground（Hills）;
n = 6;
} else if（n == 6）{
setBackground（Lake）;
n = 7;
} else if（n == 7）{
setBackground（Mountains）;
n = 8;
} else if（n == 8）{
setBackground（Ocean）;
n = 9;
} else if（n == 9）{
setBackground（PavedRoad）;
n = 10;
} else if（n == 10）{
setBackground（Plains）;
n = 1; （int i = 1; i< = Area; i ++）{
块[i] =新矩形（x，y，20， 20）;
}
}
我有很多Youtube教程，所以我的代码有点不规则。我所有的主窗体代码都是一个复选框触发事件。 （GUI在Netbeans编辑器中预先设计）
1）强烈建议您坚持在OpenGL之前学习Java 2d 。
2）理想情况下，您将有一些模型视图分离 - 您将有一个表示地图内容的类，另一个表示实际呈现。
这是一些示例代码，应该让你更接近你的目标。请尝试阅读并了解 ，而不仅仅是复制粘贴并将其删除。
import javax.swing。 *;
import java.awt。*;
import java.util.Random;
public class Map扩展JPanel {
public static final Color CITY = new Color（214,217,223）;
public static final颜色DESERT = new Color（255,204,102）;
public static final颜色DIRT_ROAD = new Color（153,102,0）;
public static final Color FOREST = new Color（0,102,0）;
public static final颜色HILLS = new Color（51,153,0）;
public static final颜色LAKE = new Color（0,153,153）;
public static final颜色MOUNTAINS = new Color（102,102,255）;
public static final颜色OCEAN = new Color（0,0,153）;
public static final颜色PAVED_ROAD = new Color（51,51,0）;
public static final颜色PLAINS = new Color（102,153,0）;
public static final Color [] TERRAIN = {
CITY，
DESERT，
DIRT_ROAD，
FOREST，
HILLS，
LAKE，
MOUNTAINS，
OCEAN，
PAVED_ROAD，
PLAINS
};
public static final int NUM_ROWS = 25;
public static final int NUM_COLS = 30;
public static final int PREFERRED_GRID_SIZE_PIXELS = 10;
//实际上，你可能想要一个类来表示一个地图块，
//将包含
//游戏中的维度，颜色，属性等内容世界。保持简单只是为了说明。
private final Color [] [] terrainGrid;
public Map（）{
this.terrainGrid = new Color [NUM_ROWS] [NUM_COLS];
随机r = new Random（）;
//为（int i = 0; i< NUM_ROWS; i ++）{
为（int j = 0; j< NUM_COLS; j ++）{
int randomTerrainIndex = r.nextInt（TERRAIN.length）;
颜色randomColor = TERRAIN [randomTerrainIndex];
this.terrainGrid [i] [j] = randomColor;
}
}
int preferredWidth = NUM_COLS * PREFERRED_GRID_SIZE_PIXELS;
int preferredHeight = NUM_ROWS * PREFERRED_GRID_SIZE_PIXELS;
setPreferredSize（new Dimension（preferredWidth，preferredHeight））;
}
@Override
public void paintComponent（Graphics g）{
//重要的是调用超类方法
super.paintComponent（g）;
//清除板
g.clearRect（0，0，getWidth（），getHeight（））;
//绘制网格
int rectWidth = getWidth（）/ NUM_COLS;
int rectHeight = getHeight（）/ NUM_ROWS; （int i = 0; i< NUM_ROWS; i ++）{
for（int j = 0; j< NUM_COLS; j ++）{
//左上角这个地形的角落
int x = i * rectWidth;
int y = j * rectHeight;
颜色terrainColor = terrainGrid [i] [j];
g.setColor（terrainColor）;
g.fillRect（x，y，rectWidth，rectHeight）;
}
}
}
public static void main（String [] args）{
// http://docs.oracle.com/ javase / tutorial / uiswing / concurrency / initial.html
SwingUtilities.invokeLater（new Runnable（）{
public void run（）{
JFrame frame = new JFrame（Game）;
Map map = new Map（）;
frame.add（map）;
frame.setDefaultCloseOperation（JFrame.EXIT_ON_CLOSE）;
frame.pack（）;
框架.setVisible（true）;
}
}）;
}
}
I'm trying to simulate a battle in a really basic program, but since this is my first time with a big program in Java I'm pretty much clueless on how to proceed. I was thinking I'd have a big 600-by-600 panel and use Graphics2D to just draw the terrain as 20x20 rectangles... Unfortunately even with several tutorials I have no idea what to do.
I have 10 different types of terrain to cycle through, and 5 different landscape profiles. Basically what I want the program to do is when I select a certain profile in a combobox, it paints the landscape and the two opposing sides in the battle (though I'm not quite there yet)
Honestly I haven't made very much progress in the program. Should I be using just Graphics2D and rectangles for something like this, or should I switch to OpenGL or something similar? Although with my current Java experience, I don't think I'd get very far with it without help. Anyways, here's what I have so far:
public class Map extends JPanel {
int n = 1;
int x; int y;
int Area = 750;
public Color City = new Color(214,217,223);
public Color Desert = new Color(255,204,102);
public Color DirtRoad = new Color(153,102,0);
public Color Forest = new Color(0,102,0);
public Color Hills = new Color(51,153,0);
public Color Lake = new Color(0,153,153);
public Color Mountains = new Color(102,102,255);
public Color Ocean = new Color(0,0,153);
public Color PavedRoad = new Color(51,51,0);
public Color Plains = new Color(102,153,0);
public Rectangle blocks[];
public Map(){
blocks = new Rectangle[750];
if (n == 1) {
setBackground(City);
n = 2;
} else if (n == 2) {
setBackground(Desert);
n = 3;
} else if (n == 3) {
setBackground(DirtRoad);
n = 4;
} else if (n == 4) {
setBackground(Forest);
n = 5;
} else if (n == 5) {
setBackground(Hills);
n = 6;
} else if (n == 6) {
setBackground(Lake);
n = 7;
} else if (n == 7) {
setBackground(Mountains);
n = 8;
} else if (n == 8) {
setBackground(Ocean);
n = 9;
} else if (n == 9) {
setBackground(PavedRoad);
n = 10;
} else if (n == 10) {
setBackground(Plains);
n = 1;
} else {
}
for (int i = 1; i <= Area; i++) {
blocks[i] = new Rectangle(x, y, 20, 20);
}
}
I got this far with several Youtube tutorials, so my code is a bit erratic. All I have in the main form code is a checkBox firing event. (GUI is pre-designed in Netbeans editor.)
1) I would strongly suggest you stick with learning Java 2d before OpenGL.
2) Ideally you would have some model view separation - you'd have one class representing the map contents and another one to actually render it.
Here's some sample code that should get you a bit closer towards your goal. Please try to read through and understand it, not just copy paste and hack away at it.
import javax.swing.*;
import java.awt.*;
import java.util.Random;
public class Map extends JPanel {
public static final Color CITY = new Color(214,217,223);
public static final Color DESERT = new Color(255,204,102);
public static final Color DIRT_ROAD = new Color(153,102,0);
public static final Color FOREST = new Color(0,102,0);
public static final Color HILLS = new Color(51,153,0);
public static final Color LAKE = new Color(0,153,153);
public static final Color MOUNTAINS = new Color(102,102,255);
public static final Color OCEAN = new Color(0,0,153);
public static final Color PAVED_ROAD = new Color(51,51,0);
public static final Color PLAINS = new Color(102,153,0);
public static final Color[] TERRAIN = {
CITY,
DESERT,
DIRT_ROAD,
FOREST,
HILLS,
LAKE,
MOUNTAINS,
OCEAN,
PAVED_ROAD,
PLAINS
};
public static final int NUM_ROWS = 25;
public static final int NUM_COLS = 30;
public static final int PREFERRED_GRID_SIZE_PIXELS = 10;
// In reality you will probably want a class here to represent a map tile,
// which will include things like dimensions, color, properties in the
// game world. Keeping simple just to illustrate.
private final Color[][] terrainGrid;
public Map(){
this.terrainGrid = new Color[NUM_ROWS][NUM_COLS];
Random r = new Random();
// Randomize the terrain
for (int i = 0; i < NUM_ROWS; i++) {
for (int j = 0; j < NUM_COLS; j++) {
int randomTerrainIndex = r.nextInt(TERRAIN.length);
Color randomColor = TERRAIN[randomTerrainIndex];
this.terrainGrid[i][j] = randomColor;
}
}
int preferredWidth = NUM_COLS * PREFERRED_GRID_SIZE_PIXELS;
int preferredHeight = NUM_ROWS * PREFERRED_GRID_SIZE_PIXELS;
setPreferredSize(new Dimension(preferredWidth, preferredHeight));
}
@Override
public void paintComponent(Graphics g) {
// Important to call super class method
super.paintComponent(g);
// Clear the board
g.clearRect(0, 0, getWidth(), getHeight());
// Draw the grid
int rectWidth = getWidth() / NUM_COLS;
int rectHeight = getHeight() / NUM_ROWS;
for (int i = 0; i < NUM_ROWS; i++) {
for (int j = 0; j < NUM_COLS; j++) {
// Upper left corner of this terrain rect
int x = i * rectWidth;
int y = j * rectHeight;
Color terrainColor = terrainGrid[i][j];
g.setColor(terrainColor);
g.fillRect(x, y, rectWidth, rectHeight);
}
}
}
public static void main(String[] args) {
// http://docs.oracle.com/javase/tutorial/uiswing/concurrency/initial.html
SwingUtilities.invokeLater(new Runnable() {
public void run() {
JFrame frame = new JFrame("Game");
Map map = new Map();
frame.add(map);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.pack();
frame.setVisible(true);
}
});
}
}
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