Hey! do you know the game snake? well my professor asked us to develop it in c++!
It`s crazy!Although he said write a simple program but I`m still confused!Can someone pleassssssssse help me with it?
The snake should eat and Its length and score should increase and also do not stick with walls!!!
I have already write something! It just increases Its length!
3pid 0 Newbie Poster
William Hemsworth 1,339 Posting Virtuoso
>I have already write something!
If you have some code, then post it so we can help.
3pid 0 Newbie Poster
>I have already write something!
If you have some code, then post it so we can help.
#include <stdlib.h>
#include <stdio.h>
#include <conio.h>
#include<time.h>
void draw_line(int col, int row);
void show_score();
void add_segment();
void setup_level();
int randomize(int i);
void speed(int sec);
/* constants */
const int maxrow=20, maxcol=75;
const int snake_start_col=5,snake_start_row=5;
const char up_key='w', down_key='s', left_key='a', right_key='d';
/* global variables */
int score, snake_length ;
char screen_grid[maxrow][maxcol];
char direction = right_key;
struct snake_segment {
int row,col;
} snake[50];
int main()
{
setup_level();
draw_line(1,1);
/* Variable declarations within main() only */
char keypress;
do /* restart game loop */
{
score=0;
/* main loop */
do
{
/* If key has been hit, then check it is a direction key - if so,
change direction */
if (kbhit())
{
keypress=(char)getch();
if((keypress==right_key)||(keypress==left_key)||
(keypress==up_key)||(keypress==down_key))
direction = keypress;
}
/* Add a segment to the end of the snake */
add_segment();
/* Blank last segment of snake */
/* ... and remove it from the array */
for (int s=1;s<=snake_length;s++)
snake[s-1]=snake[s];
for (int j=0;j<=snake_length;j++)
{
speed(1);
for(int g=0;g<=j;g++)
{
if(direction==right_key)
{
gotoxy(snake[g+1].col+1,snake[g].row);
printf("O");
gotoxy(snake[g-1].col-1,snake[g].row);
printf(" ");
}
else if(direction== down_key)
{
gotoxy(snake[g].col,snake[g+1].row+1);
printf("O");
gotoxy(snake[g].col,snake[g-1].row-1);
printf(" ");
}
else if (direction==up_key)
{
gotoxy(snake[g].col,snake[g-1].row-1);
printf("O");
gotoxy(snake[g].col,snake[g+1].row+1);
printf(" ");
}
else if (direction==left_key)
{
gotoxy(snake[g-1].col-1,snake[g].row);
printf("O");
gotoxy(snake[g+1].col+1,snake[g].row);
printf(" ");
}
}
if ( (snake[j].row==maxrow)||(snake[j].row==1)||(snake[j].col==maxcol)||(snake[j].col==1)||
(snake[snake_length].row)==(snake[j].row) &&(snake[snake_length].col)==(snake[j].col))
{
break;
printf("break");
}
if (screen_grid[snake[j].row][snake[j].col]=='X')
{
score+=250;
show_score();
snake_length++;
add_segment();
}
}
/* Collision detection - snake (bad!) */
/* Collision detection - food (good!) */
} while (keypress!='x');
show_score();
} while(keypress!='x');
}
void setup_level()
{
/* variables local to setup_level() */
int row,col;
/* Set up global variables for new level */
snake_length='4';
/* Fill grid with Xs */
for(int i=0;i< score+2 ;i++)
{
row= randomize(i++);
col= randomize(i+3);
gotoxy(col,row++);
printf("X");
}
/* Create snake array of length snake_length */
for(int m=0;m<snake_length;m++)
{
snake[m].row=snake_start_row;
snake[m].col=snake_start_col;
}
/* Draw playing board */
show_score();
}
void draw_line(int colm, int row)
{
for (colm=0;colm<maxcol;colm++)
{
gotoxy(colm,1);
printf("-");
}
for (colm=0;colm<maxcol;colm++)
{
gotoxy(colm,maxrow);
printf("-");
}
for(row=0;row<maxrow;row++)
{
gotoxy(1,row);
printf("|");
}
for(row=0;row<maxrow;row++)
{
gotoxy(maxcol,row);
printf("|");
}
}
void show_score()
{
gotoxy(10,maxrow+4);
printf("up_key='w', down_key='s', left_key='a', right_key='d'");
gotoxy(28,maxrow+5);
printf("press 'x' to stop");
gotoxy(30,maxrow+2);
printf("Score: %05d",score);
}
void add_segment()
{
switch(direction)
{
case(right_key): snake[snake_length].row=snake[snake_length-1].row;
snake[snake_length].col=snake[snake_length-1].col+1;
break;
case(left_key) : snake[snake_length].row=snake[snake_length-1].row;
snake[snake_length].col=snake[snake_length-1].col-1;
break;
case(up_key) : snake[snake_length].row=snake[snake_length-1].row-1;
snake[snake_length].col=snake[snake_length-1].col;
break;
case(down_key) : snake[snake_length].row=snake[snake_length-1].row+1;
snake[snake_length].col=snake[snake_length-1].col;
break;
}
}
int randomize(int i)
{
return i*i+4;
}
void speed(int sec)
{
clock_t timesec;
timesec = clock();
while((clock() - timesec) < sec);
} William Hemsworth 1,339 Posting Virtuoso
Even after formatting this code, I can't make much sense of it. Just to get it to compile was hard enough, as you've used many non-standard functions. Here is the code I have (green parts are what I added to allow it to compile)
#include <windows.h>
#include <stdlib.h>
#include <stdio.h>
#include <conio.h>
#include <time.h>
void draw_line(int col, int row);
void show_score();
void add_segment();
void setup_level();
int randomize(int i);
void speed(int sec);
void gotoxy(int x, int y) {
static HANDLE hOut = GetStdHandle( STD_OUTPUT_HANDLE );
COORD c = {x, y};
SetConsoleCursorPosition( hOut, c );
}
/* constants */
const int maxrow = 20,
maxcol = 75;
const int snake_start_col = 5,
snake_start_row = 5;
const char up_key ='w',
down_key ='s',
left_key ='a',
right_key ='d';
/* global variables */
int score, snake_length;
char screen_grid[maxrow][maxcol];
char direction = right_key;
struct snake_segment {
int row, col;
} snake[50];
int main()
{
setup_level();
draw_line(1, 1);
/* Variable declarations within main() only */
char keypress = 0;
do /* restart game loop */
{
score = 0;
do /* main loop */
{
/* If key has been hit, then check it is a direction key - if so, change direction */
if ( GetAsyncKeyState(VK_LEFT) ) keypress = left_key; else
if ( GetAsyncKeyState(VK_RIGHT) ) keypress = right_key; else
if ( GetAsyncKeyState(VK_UP) ) keypress = up_key; else
if ( GetAsyncKeyState(VK_DOWN) ) keypress = down_key;
/* Add a segment to the end of the snake */
add_segment();
/* Blank last segment of snake */
/* ... and remove it from the array */
for (int s = 1; s <= snake_length; s++)
snake[s-1] = snake[s];
for (int j = 0; j <= snake_length; j++) {
speed(1);
for (int g = 0; g <= j; g++) {
if ( direction == right_key ) {
gotoxy(snake[g+1].col+1, snake[g].row);
printf("O");
gotoxy(snake[g-1].col-1, snake[g].row);
printf(" ");
}
else if ( direction == down_key ) {
gotoxy(snake[g].col, snake[g+1].row+1);
printf("O");
gotoxy(snake[g].col, snake[g-1].row-1);
printf(" ");
}
else if ( direction == up_key ) {
gotoxy(snake[g].col, snake[g-1].row-1);
printf("O");
gotoxy(snake[g].col, snake[g+1].row+1);
printf(" ");
}
else if ( direction == left_key ) {
gotoxy(snake[g-1].col-1, snake[g].row);
printf("O");
gotoxy(snake[g+1].col+1, snake[g].row);
printf(" ");
}
}
if ( (snake[j].row == maxrow) || (snake[j].row == 1)||
(snake[j].col == maxcol) || (snake[j].col == 1)||
(snake[snake_length].row) == (snake[j].row) &&
(snake[snake_length].col) == (snake[j].col) ) {
break;
printf("break");
}
if ( screen_grid[snake[j].row][snake[j].col] == 'X' )
{
score += 250;
show_score();
snake_length++;
add_segment();
}
}
/* Collision detection - snake (bad!) */
/* Collision detection - food (good!) */
} while (keypress != 'x');
show_score();
} while(keypress!='x');
}
void setup_level()
{
/* variables local to setup_level() */
int row,col;
/* Set up global variables for new level */
snake_length='4';
/* Fill grid with Xs */
for (int i = 0; i < score + 2; i++) {
row = randomize(i++);
col = randomize(i+3);
gotoxy(col,row++);
printf("X");
}
/* Create snake array of length snake_length */
for (int m = 0; m < snake_length; m++) {
snake[m].row=snake_start_row;
snake[m].col=snake_start_col;
}
/* Draw playing board */
show_score();
}
void draw_line(int colm, int row)
{
for (colm = 0; colm < maxcol; colm++) {
gotoxy(colm, 1);
printf("-");
}
for (colm = 0; colm < maxcol; colm++) {
gotoxy(colm, maxrow);
printf("-");
}
for(row = 0; row < maxrow; row++) {
gotoxy(1, row);
printf("|");
}
for(row=0;row<maxrow;row++) {
gotoxy(maxcol, row);
printf("|");
}
}
void show_score()
{
gotoxy(10, maxrow + 4);
printf("up_key='w', down_key='s', left_key='a', right_key='d'");
gotoxy(28, maxrow + 5);
printf("press 'x' to stop");
gotoxy(30, maxrow + 2);
printf("Score: %05d", score);
}
void add_segment()
{
switch(direction) {
case right_key:
snake[snake_length].row = snake[snake_length-1].row;
snake[snake_length].col = snake[snake_length-1].col + 1;
break;
case left_key:
snake[snake_length].row = snake[snake_length-1].row;
snake[snake_length].col = snake[snake_length-1].col - 1;
break;
case up_key:
snake[snake_length].row=snake[snake_length-1].row - 1;
snake[snake_length].col=snake[snake_length-1].col;
break;
case down_key:
snake[snake_length].row=snake[snake_length-1].row + 1;
snake[snake_length].col=snake[snake_length-1].col;
break;
}
}
int randomize(int i)
{
return i * i + 4;
}
void speed(int sec)
{
clock_t timesec;
timesec = clock();
while ((clock() - timesec) < sec);
}Either way, the output is way off for me, so I don't know what exact problems your having, so I can't help. The best I can do is to say you start over, use standard functions, and structure the game well.
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