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分享C语言贪吃蛇按键延迟问题
void runGame() // 游戏运行函数
{
HideCursor(0);
state = R;//初始移动方向向右；
grades = 0;
while (1)
{
gotoxy(64, 5);
printf("Grades：%d ", grades);
gotoxy(64, 6);
printf("Each food score：%d", score);
gotoxy(64, 14);
printf("ESC\tFor Exit Game");
gotoxy(64, 15);
printf("SPACE\tFor Pause Game");
gotoxy(64, 18);
printf("↑\tFor UP");
gotoxy(64, 20);
printf("↓\tFor DOWN");
gotoxy(64, 22);
printf("←\tFor LEFT");
gotoxy(64, 24);
printf("→\tFor RIGHT");
if (GetAsyncKeyState(VK_UP) && state != D)
{
state = U;
}
else if (GetAsyncKeyState(VK_DOWN) && state != U)
{
state = D;
}
else if (GetAsyncKeyState(VK_LEFT) && state != R)
{
state = L;
}
else if (GetAsyncKeyState(VK_RIGHT) && state != L)
{
state = R;
}
else if (GetAsyncKeyState(VK_SPACE))
{
pauseGame();
}
else if (GetAsyncKeyState(VK_ESCAPE))
{
Sleep(300);
gotoxy(25, 12);
printf("The windows wille be exit after 3 seconds !\n");
Sleep(3000);
exit(0);
break;
}
Sleep(gameSpeed);
moveSnake();
}
}
/*************************************************
Function: moveSnake
Description: 游戏运行核心代码，控制贪吃蛇运动
Calls: void *malloc(unsigned int num_bytes)、void bitSnake()、void hitWall()、int printf(const char *format,...)、vid creatFoods()、 void free(void *ptr)
void gotoxy()
Called By: void runGame()
*************************************************/
void moveSnake()
{
SNAKE *tempNode;
SNAKE* p;
tempNode = (SNAKE*)malloc(sizeof(SNAKE));
bitSnake();
hitWall();
if (state == U)
{
tempNode->y = head->y - 1;
tempNode->x = head->x;
if (tempNode->x == food->x && tempNode->y == food->y)
{
tempNode->next = head;
head = tempNode;
p = head;
gotoxy(p->x, p->y);
printf("@");
p = p->next;
while (p != NULL)
{
gotoxy(p->x, p->y);
printf("O");
p = p->next;
}
grades = grades + 5;
createFoods();
}
else
{
tempNode->next = head;
head = tempNode;
p = head;
gotoxy(p->x, p->y);
printf("@");
p = p->next;
while (p->next->next != NULL)
{
gotoxy(p->x, p->y);
printf("O");
p = p->next;
}
gotoxy(p->next->x, p->next->y);
printf(" ");
free(p->next);
p->next = NULL;
}
}
if (state == D)
{
tempNode->y = head->y + 1;
tempNode->x = head->x;
if (tempNode->x == food->x && tempNode->y == food->y)
{
tempNode->next = head;
head = tempNode;
p = head;
gotoxy(p->x, p->y);
printf("@");
p = p->next;
while (p != NULL)
{
gotoxy(p->x, p->y);
printf("O");
p = p->next;
}
grades = grades + 5;
createFoods();
}
else
{
tempNode->next = head;
head = tempNode;
p = head;
gotoxy(p->x, p->y);
printf("@");
p = p->next;
while (p->next->next != NULL)
{
gotoxy(p->x, p->y);
printf("O");
p = p->next;
}
gotoxy(p->next->x, p->next->y);
printf(" ");
free(p->next);
p->next = NULL;
}
}
if (state == R)
{
tempNode->y = head->y;
tempNode->x = head->x + 1;
if (tempNode->x == food->x && tempNode->y == food->y)
{
tempNode->next = head;
head = tempNode;
p = head;
gotoxy(p->x, p->y);
printf("@");
p = p->next;
while (p != NULL)
{
gotoxy(p->x, p->y);
printf("O");
p = p->next;
}
grades = grades + 5;
createFoods();
}
else
{
tempNode->next = head;
head = tempNode;
p = head;
gotoxy(p->x, p->y);
printf("@");
p = p->next;
while (p->next->next != NULL)
{
gotoxy(p->x, p->y);
printf("O");
p = p->next;
}
gotoxy(p->next->x, p->next->y);
printf(" ");
free(p->next);
p->next = NULL;
}
}
if (state == L)
{
tempNode->y = head->y;
tempNode->x = head->x - 1;
if (tempNode->x == food->x && tempNode->y == food->y)
{
tempNode->next = head;
head = tempNode;
p = head;
gotoxy(p->x, p->y);
printf("@");
p = p->next;
while (p != NULL)
{
gotoxy(p->x, p->y);
printf("O");
p = p->next;
}
grades = grades + 5;
createFoods();
}
else
{
tempNode->next = head;
head = tempNode;
p = head;
gotoxy(p->x, p->y);
printf("@");
p = p->next;
while (p->next->next != NULL)
{
gotoxy(p->x, p->y);
printf("O");
p = p->next;
}
gotoxy(p->next->x, p->next->y);
printf(" ");
free(p->next);
p->next = NULL;
}
}
}
...全文
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ooolinux 2017-07-01
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按键已经存在键盘缓冲区了
ooolinux 2017-07-01
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我也写过一个贪吃蛇，按键延迟的话要调整代码，因为代码中有检测按键，有Sleep，代码执行也需要时间，我当时的想法好像是在Sleep阶段按下的按键，循环中的代码一运行到检测按键，按键已经存在了，立马检测到，贪吃蛇立即有动作，感觉反应就快了。
赵4老师 2017-06-29
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仅供参考：
#include <conio.h>
#include <windows.h>
void ConPrintAt(int x, int y, char *CharBuffer, int len)
{
DWORD count;
COORD coord = {x, y};
HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
SetConsoleCursorPosition(hStdOut, coord);
WriteConsole(hStdOut, CharBuffer, len, &count, NULL);
}
void HideTheCursor()
{
CONSOLE_CURSOR_INFO cciCursor;
HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
if(GetConsoleCursorInfo(hStdOut, &cciCursor))
{
cciCursor.bVisible = FALSE;
SetConsoleCursorInfo(hStdOut, &cciCursor);
}
}
void ShowTheCursor()
{
CONSOLE_CURSOR_INFO cciCursor;
HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
if(GetConsoleCursorInfo(hStdOut, &cciCursor))
{
cciCursor.bVisible = TRUE;
SetConsoleCursorInfo(hStdOut, &cciCursor);
}
}
void GetWH(int *w,int *h) {
HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
CONSOLE_SCREEN_BUFFER_INFO csbi;
if (GetConsoleScreenBufferInfo(hStdOut, &csbi)) {
*w=csbi.srWindow.Right;
*h=csbi.srWindow.Bottom;
} else {
*w=80;
*h=25;
}
}
void ClearConsole()
{
//Get the handle to the current output buffer...
HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
//This is used to reset the carat/cursor to the top left.
COORD coord = {0, 0};
//A return value... indicating how many chars were written
// not used but we need to capture this since it will be
// written anyway (passing NULL causes an access violation).
DWORD count;
//This is a structure containing all of the console info
// it is used here to find the size of the console.
CONSOLE_SCREEN_BUFFER_INFO csbi;
//Here we will set the current color
if(GetConsoleScreenBufferInfo(hStdOut, &csbi))
{
//This fills the buffer with a given character (in this case 32=space).
FillConsoleOutputCharacter(hStdOut, (TCHAR) 32, csbi.dwSize.X * csbi.dwSize.Y, coord, &count);
FillConsoleOutputAttribute(hStdOut, csbi.wAttributes, csbi.dwSize.X * csbi.dwSize.Y, coord, &count);
//This will set our cursor position for the next print statement.
SetConsoleCursorPosition(hStdOut, coord);
}
}
int main() {
unsigned short k;
int x,y,w,h;
char d;
SetConsoleOutputCP(437);
ClearConsole();
GetWH(&w,&h);
x=w/2;y=h/2;
HideTheCursor();
ConPrintAt(x,y,"O",1);
d='o';
while (1) {
Sleep(50);
if (kbhit()) {
k=getch();
if (27==k) break;//按Esc键退出
if (0==k||0xe0==k) k|=getch()<<8;//非字符键
switch (k) {
case 0x48e0:case 0x04800://上
d='u';
if (y>0) {
ConPrintAt(x,y," ",1);
y--;
ConPrintAt(x,y,"O",1);
}
break;
case 0x50e0:case 0x05000://下
d='d';
if (y<h) {
ConPrintAt(x,y," ",1);
y++;
ConPrintAt(x,y,"O",1);
}
break;
case 0x4be0:case 0x04b00://左
d='l';
if (x>0) {
ConPrintAt(x,y," ",1);
x--;
ConPrintAt(x,y,"O",1);
}
break;
case 0x4de0:case 0x04d00://右
d='r';
if (x<w-1) {
ConPrintAt(x,y," ",1);
x++;
ConPrintAt(x,y,"O",1);
}
break;
}
// cprintf("%04x pressed.\r\n",k);
} else {
switch (d) {
case 'u':
if (y>0) {
ConPrintAt(x,y," ",1);
y--;
ConPrintAt(x,y,"O",1);
}
break;
case 'd':
if (y<h) {
ConPrintAt(x,y," ",1);
y++;
ConPrintAt(x,y,"O",1);
}
break;
case 'l':
if (x>0) {
ConPrintAt(x,y," ",1);
x--;
ConPrintAt(x,y,"O",1);
}
break;
case 'r':
if (x<w-1) {
ConPrintAt(x,y," ",1);
x++;
ConPrintAt(x,y,"O",1);
}
break;
}
}
}
ClearConsole();
ShowTheCursor();
return 0;
}
Kaciry 2017-06-29
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state是全局变量
Kaciry 2017-06-29
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为什么这样写控制蛇移动时按下方向键会感觉不灵敏？
