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260 lines (246 loc) · 8.8 KB
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import java.util.Scanner;
public class GameConsoleVersion {
private final int[][] tiles = new int[4][4];
private final int LEFT = 4, RIGHT = 6, UP = 8, DOWN = 2;
private boolean isWin = false;
private boolean isLose = false;
//TODO：
//1.实现合并移动，使用8，2，4，6进行上下左右的移动命令
//2.实现每次移动过后都在剩下的0位置随机生成一个2或4
//3.实现判断输的方法
//4.实现判断赢的方法
public GameConsoleVersion() {
init();
start();
}
public void start() {
Scanner scanner = new Scanner(System.in);
print();
while (!isLose) {
int flag = scanner.nextInt();
perform(flag);
print();
if(isWin){
System.out.println("You Win!");
return;
}
}
System.out.println("You Lose!");
}
private void init() {
//生成两个随即砖块
tiles[random(0, 3)][random(0, 3)] = random(0, 1) == 0 ? 2 : 4;
tiles[random(0, 3)][random(0, 3)] = random(0, 1) == 0 ? 2 : 4;
}
private int random(int s, int e) {
return (int) Math.round(Math.random() * (e - s) + s);
}
private void perform(int flag) {
merge(flag);
move(flag);
isWin = isWin();
isLose = isLose();
giveTiles();
}
private void merge(int flag) {
if (flag == LEFT) {
for (int row = 0; row < 4; row++) {
for (int col = 0; col < 4; col++) {
if (tiles[row][col] == 0) {
continue;
}
for (int j = col + 1; j < 4; j++) {
if (tiles[row][j] != tiles[row][col] && tiles[row][j] != 0) {
break;
}
if (tiles[row][j] == tiles[row][col]) {
tiles[row][col] += tiles[row][j];
tiles[row][j] = 0;
break;
}
}
}
}
} else if (flag == RIGHT) {
for (int row = 0; row < 4; row++) {
for (int col = 3; col >= 0; col--) {
if (tiles[row][col] == 0) {
continue;
}
for (int j = col - 1; j >= 0; j--) {
if (tiles[row][j] != tiles[row][col] && tiles[row][j] != 0) {
break;
}
if (tiles[row][j] == tiles[row][col]) {
tiles[row][col] += tiles[row][j];
tiles[row][j] = 0;
break;
}
}
}
}
} else if (flag == UP) {
for (int col = 0; col < 4; col++) {
for (int row = 0; row < 4; row++) {
if (tiles[row][col] == 0) {
continue;
}
for (int j = row + 1; j < 4; j++) {
if (tiles[j][col] != tiles[row][col] && tiles[j][col] != 0) {
break;
}
if (tiles[j][col] == tiles[row][col]) {
tiles[row][col] += tiles[j][col];
tiles[j][col] = 0;
break;
}
}
}
}
} else if (flag == DOWN) {
for (int col = 0; col < 4; col++) {
for (int row = 3; row >= 0; row--) {
if (tiles[row][col] == 0) {
continue;
}
for (int j = row - 1; j >= 0; j--) {
if (tiles[j][col] != tiles[row][col] && tiles[j][col] != 0) {
break;
}
if (tiles[j][col] == tiles[row][col]) {
tiles[row][col] += tiles[j][col];
tiles[j][col] = 0;
break;
}
}
}
}
}
}
private void move(int flag) {
int[][] tmp = new int[4][4];
if (flag == UP) {
for (int col = 0; col < 4; col++) {
for (int row = 0, j = 0; row < 4; row++) {
if (tiles[row][col] != 0) {
tmp[j++][col] = tiles[row][col];
}
}
for (int row = 0; row < 4; row++) {
if (tmp[row][col] != 0) {
tiles[row][col] = tmp[row][col];
} else {
tiles[row][col] = 0;
}
}
}
} else if (flag == DOWN) {
for (int col = 0; col < 4; col++) {
for (int row = 3, j = 3; row >= 0; row--) {
if (tiles[row][col] != 0) {
tmp[j--][col] = tiles[row][col];
}
}
for (int row = 3; row >= 0; row--) {
if (tmp[row][col] != 0) {
tiles[row][col] = tmp[row][col];
} else {
tiles[row][col] = 0;
}
}
}
} else if (flag == LEFT) {
for (int row = 0; row < 4; row++) {
for (int col = 0, j = 0; col < 4; col++) {
if (tiles[row][col] != 0) {
tmp[row][j++] = tiles[row][col];
}
}
for (int col = 0; col < 4; col++) {
if (tmp[row][col] != 0) {
tiles[row][col] = tmp[row][col];
} else {
tiles[row][col] = 0;
}
}
}
} else if (flag == RIGHT) {
for (int row = 0; row < 4; row++) {
for (int col = 3, j = 3; col >= 0; col--) {
if (tiles[row][col] != 0) {
tmp[row][j--] = tiles[row][col];
}
}
for (int col = 3; col >= 0; col--) {
if (tmp[row][col] != 0) {
tiles[row][col] = tmp[row][col];
} else {
tiles[row][col] = 0;
}
}
}
}
}
private boolean isLose() {
//扫描tiles，只要发现一个0，那就没输，返回false，对于每一个位置，分别扫描它的上下左右，只要发现一个和
//该位置的数相同的，同样没输，返回false，这一步在扫描0之后，最后返回true
for (int row = 0; row < 4; row++) {
for (int col = 0; col < 4; col++) {
if (tiles[row][col] == 0) {
return false;
}
}
}
for (int row = 0; row < 4; row++) {
for (int col = 0; col < 4; col++) {
int left, right, up, down, cur;
left = col == 0 ? -1 : tiles[row][col - 1];
right = col == 3 ? -1 : tiles[row][col + 1];
up = row == 0 ? -1 : tiles[row - 1][col];
down = row == 3 ? -1 : tiles[row + 1][col];
cur = tiles[row][col];
if (cur == left || cur == right || cur == up || cur == down) {
return false;
}
}
}
return true;
}
private boolean isWin() {
for (int row = 0; row < 4; row++) {
for (int col = 0; col < 4; col++) {
if (tiles[row][col] == 2048) {
return true;
}
}
}
return false;
}
private void giveTiles() {
int[][] zeroIndex = new int[16][2];
int count = 0;
for (int row = 0; row < 4; row++) {
for (int col = 0; col < 4; col++) {
if (tiles[row][col] == 0) {
zeroIndex[count][0] = row;
zeroIndex[count][1] = col;
count++;
}
}
}
int pos = (int) Math.round(Math.random() * count);
int num = (int) Math.round(Math.random()) == 0 ? 2 : 4;
tiles[zeroIndex[pos][0]][zeroIndex[pos][1]] = num;
}
public void print() {
for (int[] tile : tiles) {
for(int i=0;i<4;i++){
System.out.print(tile[i]+" ");
}
System.out.println();
}
}
public static void main(String[] args) {
new GameConsoleVersion();
}
}
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