Reproduce the snake game in C language (I) build pages and construct snakes

A small still snake is displayed on the screen . For two dimensional arrays canvas[High][Width] The corresponding element of , The value is 0 Output space , The value is -1 Output border #, The value is 1 Output snakehead @, Value is greater than 1 The positive number of the output snake body *. stay startup() Function to initialize the snake head in the middle of the canvas （canvas[High/2][Width/2]=1;), The snake head generates... In turn to the left 4 A snake (for(i=1;i<=4;i++) canvas[High/2][Width/2-i]=i+1;) The element values are 2、3、4、5.

#include<stdio.h>
#include<stdlib.h>              // Contains C、C++ The most commonly used system function of language 
#include<conio.h>               // It is mainly the input and output of files and standard console 
#include<windows.h>             // Control page  

#define High 20                 // Game screen size  ： high 20. wide 30 
#define Width 30


//0 Is a space ,-1 Is border #,1 For the snake head @, Greater than 1 For the snake                      
int canvas[High][Width]={0};       // Two dimensional array   Store elements  

       
void gotoxy(int x,int y)          // Move the cursor to （x,y）; Included in conio.h    
{
	HANDLE handle=GetStdHandle(STD_OUTPUT_HANDLE);
	COORD pos;
	pos.X=x;
	pos.Y=y;
	SetConsoleCursorPosition(handle,pos);
}

gotoxy（int x,int y) Is the position of the fixed cursor .

void startup()                // Data initialization  
{
int i,j;

// Initialize border 
for(i=0;i<High;i++) 
{
	canvas[i][0] = -1;
	canvas[i][Width-1] =-1;        // Yes i Conduct 20 Secondary external circulation  	
}
for(j=0;j<Width;j++)
{
	canvas[0][j]=-1;
	canvas[High-1][j] = -1;        // Yes j Conduct 30 Secondary external circulation  
}

canvas[High/2][Width/2] =1;            // Snake head position 

for(i=1;i<=4;i++)                       // stay @ The left side of the output three * As a snake  
   canvas[High/2][Width/2-i] = i+1;     // Initialize the snake body  
}

  Here is the construction of snake and game page as required .

void show()           // display frame 
{
	gotoxy(0,0);                     // Move the cursor to the origin position , Clear the screen 
	int i,j;
	for (i=0;i<High;i++)
	{
		for(j=0;j<Width;j++)
		{
			if(canvas[i][j]==0)            // The unassigned , The assignment is 0 
			printf(" ");                   // Output space  
			else if(canvas[i][j]==-1)
			printf("#");                  // Output border  
			else if(canvas[i][j]==1)
			printf("@");                  // Output snakehead  
			else if(canvas[i][j]>1)
			printf("*");                  // Output snake body  
		}
		printf("\n"); 
	}
}

Use show Functions and if Conditional statements output the page and the snake .

void updateWithoutTnput()             // User independent updates  
{
}
void updateWithInput()               // User related updates  
{
}

The above two statements are convenient to identify the subsequent updates of the game , Does not affect the integrity of the program .

int main()                          // The main function  
{
	startup();                       // call startup function  
	while(1)
	{
		show();
		updateWithoutTnput();           // User independent updates  
		updateWithInput();              // User related updates  
	}
	return 0;
 } 

The results are shown in the figure .

##############################
#                            #
#                            #
#                            #
#                            #
#                            #
#                            #
#                            #
#                            #
#                            #
#          ****@             #
#                            #
#                            #
#                            #
#                            #
#                            #
#                            #
#                            #
#                            #
##############################

notes ： If the cursor flashes , You can do it again main Add the following function to the function to hide the cursor ：

    CONSOLE_CURSOR_INFO cci;
	cci.bVisible = FALSE;
	cci.dwSize = sizeof(cci);
	SetConsoleCursorInfo(GetStdHandle(STD_OUTPUT_HANDLE), &cci);