俄罗斯方块的代码，帮忙改个错

#include<bits/stdc++.h>

#include <iostream>

#include <windows.h>

#include <vector>

#include <mmsystem.h>

#include <cstdio>

#pragma comment(lib, "winmm.lib")

using namespace std;

#define GameW 10

#define GameH 20

const int CtrlLeft = GameW*2+4 + 3;

struct Point {

Point(){}

Point(int x, int y) {_x = x, _y = y;}

int _x, _y;

};

HANDLE g_hOutput = GetStdHandle(STD_OUTPUT_HANDLE);

HANDLE g_hInput = GetStdHandle(STD_INPUT_HANDLE);

Point g_ptCursor(0,0);

BOOL isChecking = FALSE;

BOOL g_bGameOver = FALSE;

int g_nGameBack[GameH][GameW], Case;

int nowKeyInfo = -1;

int g_nDiff = 1;

int g_nLife = 2;

int g_nScore = 0;

void SetCursor(COORD cd) {

SetConsoleCursorPosition(g_hOutput, cd);

}

void SetCursor(int x, int y){

COORD cd = {x, y};

SetCursor(cd);

}

void SetBlockCursor(int x, int y){

COORD cd = {2*x + 2, y + 1};

SetCursor(cd);

}

void SetBack(int x, int y, BOOL bk) {

SetBlockCursor(x, y);

if (bk)

printf("%s", "■");

else

printf("　");

}

bool Out(int x, int y) {

return x < 0 || y < 0 || x >= GameW || y >= GameH;

}

struct xBlock {

public:

int len;

int nowRotateID;

BOOL mask[4][4][4];

static vector <xBlock> List;

xBlock() { len = 0; }

xBlock(int l, char *str) {

int i, j, k;

len = l;

memset(mask, FALSE, sizeof(mask));

for (i = 0; i < l; i++) {

for (j = 0; j < l; j++) {

mask[0][i][j] = str[i*l + j] - '0';

}

}

for (k = 1; k < 4; k++) {

for (i = 0; i < len; i++) {

for (j = 0; j < len; j++) {

mask[k][i][j] = mask[k-1][j][len-1-i];

}

}

}

nowRotateID = rand() % 4;

}

void rotate() {

nowRotateID ++;

if (nowRotateID >= 4)

nowRotateID = 0;

}

BOOL getUnit(int x, int y, int roID) {

if (roID == -1) {

roID = nowRotateID;

}

return mask[roID][y][x];

}

};

vector <xBlock> xBlock::List;

class Block {

public:

int x, y;

int ID;

xBlock bk;

void reset(xBlock *pbk) {

bk = *pbk;

x = 4, y = 0;

ID = ++ Case;

if (collide(0,0)) {

lifeDown();

}

draw();

*pbk = xBlock::List[rand() % xBlock::List.size()];

}

void lifeDown() {

int i, j;

for (i = 0; i < GameH; i++) {

for (j = 0; j < GameW; j++) {

SetBack(j, i, TRUE);

Sleep(10);

}

}

if (g_nLife) {

g_nLife --;

for (i = g_nLife; i < 6; i++) {

SetCursor(CtrlLeft + i, 15);

printf("%c", ' ');

}

for (i = GameH-1; i >= 0; i--) {

for (j = GameW-1; j >= 0; j--) {

SetBack(j, i, FALSE);

Sleep(10);

g_nGameBack[i][j] = 0;

}

}

}else {

g_bGameOver = TRUE;

}

}

void erase() {

int i, j;

for (i = 0; i < bk.len; i++) {

for (j = 0; j < bk.len; j++) {

if (bk.getUnit(j, i, -1)) {

if (! Out(j+x, i+y) && g_nGameBack[i+y][j+x]) {

SetBack(j+x, i+y, FALSE);

g_nGameBack[i+y][j+x] = 0;

}

}

}

}

}

void draw() {

int i, j;

for (i = 0; i < bk.len; i++) {

for (j = 0; j < bk.len; j++) {

if (bk.getUnit(j, i, -1)) {

if (! Out(j+x, i+y) && ! g_nGameBack[i+y][j+x]) {

SetBack(j+x, i+y, TRUE);

g_nGameBack[i+y][j+x] = ID;

}

}

}

}

}

void draw(int x, int y) {

int i, j;

for (i = 0; i < 4; i++) {

for (j = 0; j < 4; j++) {

SetCursor(x + 2*j, y + i);

if (bk.getUnit(j, i, -1)) {

printf("%s", "■");

}else

printf("　");

}

}

}

bool collide(int dx, int dy, int roID = -1) {

int i, j;

for (i = 0; i < bk.len; i++) {

for (j = 0; j < bk.len; j++) {

if (bk.getUnit(j, i, roID)) {

Point ptPos(j + x + dx, i + y + dy);

if (Out(ptPos._x, ptPos._y)

|| g_nGameBack[ptPos._y][ptPos._x] && ID != g_nGameBack[ptPos._y][ptPos._x]) {

return TRUE;

}

}

}

}

return FALSE;

}

void rotate(int nTimes = 1) {

int nextro = (bk.nowRotateID + nTimes) % 4;

if (collide(0, 0, nextro)) {

return ;

}

Beep(12000, 50);

erase();

bk.nowRotateID = nextro;

draw();

}

BOOL changepos(int dx, int dy) {

if (collide(dx, dy)) {

return FALSE;

}

erase();

x += dx;

y += dy;

draw();

return TRUE;

}

};

void GameInit() {

CONSOLE_CURSOR_INFO cursor_info;

cursor_info.bVisible = FALSE;

cursor_info.dwSize = 100;

SetConsoleCursorInfo(g_hOutput, &cursor_info);

xBlock::List.push_back(xBlock(3, "010111000"));

xBlock::List.push_back(xBlock(3, "110110000"));

xBlock::List.push_back(xBlock(3, "111001000"));

xBlock::List.push_back(xBlock(3, "111100000"));

xBlock::List.push_back(xBlock(3, "110011000"));

xBlock::List.push_back(xBlock(3, "011110000"));

xBlock::List.push_back(xBlock(4, "1000100010001000"));

}

void DrawFrame(int x, int y, int nWidth, int nHeight) {

int i;

for (i = 0; i < nWidth; i++) {

SetCursor(x + 2*i + 2, y);

printf("%s", "一");

SetCursor(x + 2*i + 2, y + nHeight+1);

printf("%s", "┄");

}

for (i = 0; i < nHeight; i++) {

SetCursor(x, y + i + 1);

printf("%s", "┆");

SetCursor(x + nWidth*2+2, y + i + 1);

printf("%s", "┆");

}

SetCursor(x, y);

printf("%s", "┌");

SetCursor(x, y + nHeight+1);

printf("%s", "└");

SetCursor(x + nWidth*2+2, y);

printf("%s", "┐");

SetCursor(x + nWidth*2+2, y + nHeight+1);

printf("%s", "┘");

}

void MissionInit() {

memset(g_nGameBack, FALSE, sizeof(g_nGameBack));

Case = 1;

int i;

DrawFrame(0, 0, GameW, GameH);

DrawFrame(GameW*2+4, 0, 4, GameH);

SetCursor(CtrlLeft, 2);

printf("Next");

SetCursor(CtrlLeft, 8);

printf("Speed");

for (i = 0; i < g_nDiff; i++) {

SetCursor(CtrlLeft + i, 9);

printf("%c", 1);

}

SetCursor(CtrlLeft, 11);

printf("Score");

SetCursor(CtrlLeft, 12);

printf("%d", g_nScore);

SetCursor(CtrlLeft, 14);

printf("Life");

for (i = 0; i < g_nLife; i++) {

SetCursor(CtrlLeft + i, 15);

printf("%c", 3);

}

}

void Check() {

isChecking = TRUE;

int i, j, k;

vector <int> line;

for (i = 0; i < GameH; i++) {

for (j = 0; j < GameW; j++) {

if (! g_nGameBack[i][j])

break;

}

if (j == GameW) {

line.push_back(i);

}

}

if (line.size()) {

int nCount = 7;

while (nCount --) {

for (i = 0; i < line.size(); i++) {

for (j = 0; j < GameW; j++) {

SetBack(j, line[i], nCount&1);

}

}

Sleep(70);

}

for (i = 0; i < line.size(); i++) {

for (j = 0; j < GameW; j++) {

g_nGameBack[line[i]][j] = 0;

}

}

for (i = 0; i < GameW; i++) {

int next = GameH-1;

for (j = GameH-1; j >= 0; j--) {

for (k = next; k >= 0; k--) {

if (g_nGameBack[k][i])

break;

}

next = k - 1;

BOOL is = (k >= 0);

SetBack(i, j, is);

g_nGameBack[j][i] = is;

}

}

g_nScore += 2*line.size()-1;

SetCursor(CtrlLeft, 12);

printf("%d", g_nScore);

if ( g_nScore >= g_nDiff * g_nDiff * 10) {

if (g_nDiff <= 6)

g_nDiff ++;

}

if ( g_nScore >= 50 * (g_nLife+1)) {

if (g_nLife <= 6)

g_nLife ++;

}

}

isChecking = FALSE;

}

int main() {

Block* obj = new Block();

Block* buf = new Block();

BOOL bCreateNew = FALSE;

int nTimer = GetTickCount();

int LastKeyDownTime = GetTickCount();

GameInit();

MissionInit();

buf -> bk = xBlock::List[rand() % xBlock::List.size()];

while (1) {

if (! bCreateNew) {

bCreateNew = TRUE;

obj -> reset(&buf -> bk);

if (g_bGameOver)

break;

buf -> draw(CtrlLeft - 1, 4);

}

if (GetTickCount() - nTimer >= 1000 / g_nDiff) {

nTimer = GetTickCount();

if (! obj -> collide(0, 1))

obj -> changepos(0, 1);

else {

Check();

bCreateNew = FALSE;

}

}

if (GetTickCount() - LastKeyDownTime >= 100) {

if (FALSE == isChecking) {

LastKeyDownTime = GetTickCount();

if (GetAsyncKeyState(VK_UP)) {

obj -> rotate();

}

if (GetAsyncKeyState(VK_LEFT)) {

obj -> changepos(-1, 0);

}

if (GetAsyncKeyState(VK_RIGHT)) {

obj -> changepos(1, 0);

}

if (GetAsyncKeyState(VK_DOWN)) {

if ( FALSE == obj -> changepos(0, 2) )

obj -> changepos(0, 1);

}

}

}

}

SetCursor(8, 10);

printf("Game Over!");

SetCursor(0, GameH + 3);

while (1) {

if (GetAsyncKeyState(VK_ESCAPE))

break;

}

return 0;

}