Need to add the menu with \"Start\" for Snake Game, Here is 2 classes code: ----
ID: 3838247 • Letter: N
Question
Need to add the menu with "Start" for Snake Game, Here is 2 classes code:
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*****snake.java
import java.awt.Dimension;
import java.awt.Point;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.util.ArrayList;
import java.util.Random;
import javax.swing.JFrame;
import javax.swing.Timer;
public class Snake implements ActionListener, KeyListener
{
public static Snake snake;
public JFrame jframe;
public RenderPanel renderPanel;
public Timer timer = new Timer(20, this);
public ArrayList snakeParts = new ArrayList();
public static final int UP = 0, DOWN = 1, LEFT = 2, RIGHT = 3, SCALE = 10;
public int ticks = 0, direction = DOWN, score, tailLength = 10, time;
public Point head, cherry;
public Random random;
public boolean over = false, paused;
public Dimension dim;
public Snake()
{
dim = Toolkit.getDefaultToolkit().getScreenSize();
jframe = new JFrame("Snake");
jframe.setVisible(true);
jframe.setSize(805, 700);
jframe.setResizable(false);
jframe.setLocation(dim.width / 2 - jframe.getWidth() / 2, dim.height / 2 - jframe.getHeight() / 2);
jframe.add(renderPanel = new RenderPanel());
jframe.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
jframe.addKeyListener(this);
startGame();
}
public void startGame()
{
over = false;
paused = false;
time = 0;
score = 0;
tailLength = 20;
ticks = 0;
direction = DOWN;
head = new Point(0, -1);
random = new Random();
snakeParts.clear();
cherry = new Point(random.nextInt(79), random.nextInt(66));
timer.start();
}
@Override
public void actionPerformed(ActionEvent arg0)
{
renderPanel.repaint();
ticks++;
if (ticks % 2 == 0 && head != null && !over && !paused)
{
time++;
snakeParts.add(new Point(head.x, head.y));
if (direction == UP)
{
if (head.y - 1 >= 0 && noTailAt(head.x, head.y - 1))
{
head = new Point(head.x, head.y - 1);
}
else
{
over = true;
}
}
if (direction == DOWN)
{
if (head.y + 1 < 67 && noTailAt(head.x, head.y + 1))
{
head = new Point(head.x, head.y + 1);
}
else
{
over = true;
}
}
if (direction == LEFT)
{
if (head.x - 1 >= 0 && noTailAt(head.x - 1, head.y))
{
head = new Point(head.x - 1, head.y);
}
else
{
over = true;
}
}
if (direction == RIGHT)
{
if (head.x + 1 < 80 && noTailAt(head.x + 1, head.y))
{
head = new Point(head.x + 1, head.y);
}
else
{
over = true;
}
}
if (snakeParts.size() > tailLength)
{
snakeParts.remove(0);
}
if (cherry != null)
{
if (head.equals(cherry))
{
score += 10;
tailLength++;
cherry.setLocation(random.nextInt(79), random.nextInt(66));
}
}
}
}
public boolean noTailAt(int x, int y)
{
for (Point point : snakeParts)
{
if (point.equals(new Point(x, y)))
{
return false;
}
}
return true;
}
public static void main(String[] args)
{
snake = new Snake();
}
@Override
public void keyPressed(KeyEvent e)
{
int i = e.getKeyCode();
if ((i == KeyEvent.VK_A || i == KeyEvent.VK_LEFT) && direction != RIGHT)
{
direction = LEFT;
}
if ((i == KeyEvent.VK_D || i == KeyEvent.VK_RIGHT) && direction != LEFT)
{
direction = RIGHT;
}
if ((i == KeyEvent.VK_W || i == KeyEvent.VK_UP) && direction != DOWN)
{
direction = UP;
}
if ((i == KeyEvent.VK_S || i == KeyEvent.VK_DOWN) && direction != UP)
{
direction = DOWN;
}
if (i == KeyEvent.VK_SPACE)
{
if (over)
{
startGame();
}
else
{
paused = !paused;
}
}
}
@Override
public void keyReleased(KeyEvent e)
{
}
@Override
public void keyTyped(KeyEvent e)
{
}
}
--------------------------------------------------------------------------------------------------------------------------------------------
***RenderPanel.java
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Point;
import javax.swing.JPanel;
@SuppressWarnings("serial")
public class RenderPanel extends JPanel
{
public static final Color GREEN = new Color(1666073);
@Override
protected void paintComponent(Graphics g)
{
super.paintComponent(g);
Snake snake = Snake.snake;
g.setColor(Color.BLACK);
g.fillRect(0, 0, 800, 700);
g.setColor(Color.WHITE);
for (Point point : snake.snakeParts)
{
g.fillRect(point.x * Snake.SCALE, point.y * Snake.SCALE, Snake.SCALE, Snake.SCALE);
}
g.fillRect(snake.head.x * Snake.SCALE, snake.head.y * Snake.SCALE, Snake.SCALE, Snake.SCALE);
g.setColor(Color.RED);
g.fillRect(snake.cherry.x * Snake.SCALE, snake.cherry.y * Snake.SCALE, Snake.SCALE, Snake.SCALE);
String string = "Score: " + snake.score + ", Length: " + snake.tailLength + ", Time: " + snake.time / 20;
g.setColor(Color.white);
g.drawString(string, (int) (getWidth() / 2 - string.length() * 2.5f), 10);
string = "Game Over!";
if (snake.over)
{
g.drawString(string, (int) (getWidth() / 2 - string.length() * 2.5f), (int) snake.dim.getHeight() / 4);
}
string = "Game Paused!";
if (snake.paused && !snake.over)
{
g.drawString(string, (int) (getWidth() / 2 - string.length() * 2.5f), (int) snake.dim.getHeight() / 4);
}
}
}
Explanation / Answer
#include <iostream>
#include <conio.h>
void run();
void printMap();
void initMap();
void move(int dx, int dy);
void update();
void changeDirection(char key);
void clearScreen();
void generateFood();
char getMapValue(int value);
const int mapwidth = 10;
const int mapheight = 10;
const int size = mapwidth * mapheight;
int map[size];
int headxpos;
int headypos;
int direction;
int food = 3;
bool running;
int main()
{
run();
return 0;
}
void run()
{
initMap();
running = true;
while (running) {
if (kbhit())
changeDirection(getch());
}
}
std::cout << " !!!Game over!" << std::endl << " Your score is: " << food;
std::cin.ignore();
}
void changeDirection(char key) {
switch (key) {
case 'w':
if (direction != 2) direction = 0;
break;
case 'd':
if (direction != 3) direction = 1;
break;
case 's':
if (direction != 4) direction = 2;
break;
case 'a':
if (direction != 5) direction = 3;
break;
}
}
void move(int dx, int dy) {
int newx = headxpos + dx;
int newy = headypos + dy;
if (map[newx + newy * mapwidth] == -2) {
food++;
generateFood();
}
else if (map[newx + newy * mapwidth] != 0) {
running = false;
}
headxpos = newx;
headypos = newy;
map[headxpos + headypos * mapwidth] = food + 1;
}
void clearScreen() {
system("cls");
}
void generateFood() {
int x = 0;
int y = 0;
do {
x = rand() % (mapwidth - 2) + 1;
y = rand() % (mapheight - 2) + 1;
} while (map[x + y * mapwidth] != 0);
map[x + y * mapwidth] = -2;
}
void update() {
// Move in direction indicated
switch (direction) {
case 0: move(-1, 0);
break;
case 1: move(0, 1);
break;
case 2: move(1, 0);
break;
case 3: move(0, -1);
break;
}
for (int i = 0; i < size; i++) {
if (map[i] > 0) map[i]--;
}
}
void initMap()
{
headxpos = mapwidth / 2;
headypos = mapheight / 2;
map[headxpos + headypos * mapwidth] = 1;
for (int x = 0; x < mapwidth; ++x) {
map[x] = -1;
map[x + (mapheight - 1) * mapwidth] = -1;
}
for (int y = 0; y < mapheight; y++) {
map[0 + y * mapwidth] = -1;
map[(mapwidth - 1) + y * mapwidth] = -1;
}
generateFood();
}
void printMap()
{
for (int x = 0; x < mapwidth; ++x) {
for (int y = 0; y < mapheight; ++y) {
std::cout << getMapValue(map[x + y * mapwidth]);
}
std::cout << std::endl;
}
}
char getMapValue(int value)
{
if (value > 0) return 'o';
switch (value) {
case -1: return 'X';
case -2: return 'O';
}
}
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