1.2.1
Use scanf to input different strings, press W, a, s and D to change the values of coordinates x and y, so as to control the movement of aircraft * characters up, down, left and right.
This VS may have a scanf C4996 error and a C6031 warning, which indicates that the modifier or attribute specified in the declaration is not recommended. We add code #pragma warning(disable:4996) at the top to disable it.
The switch function can also be used to determine whether the input character is a raw character.
#include <stdio.h>
#include <cstdlib>
#pragma warning(disable:4996)
using namespace std;
int main(){
int i, j;
int x = 5;
int y = 10;
char input;
while (true) {
system("cls");
//Output the empty line above the aircraft
for (i = 0; i < x; i++)
printf("\n");
//Output the space on the left of the aircraft
for (j = 0; j < y; j++)
printf(" ");
printf("*");
printf("\n");
scanf("%c", &input);
if (input == 'a')
y--;
if (input == 'd')
y++;
if (input == 'w')
x--;
if (input == 's')
x++;
}
return 0;
}
1.2.2 getch controls the movement of the aircraft
The scanf function needs to press a space every time it inputs a character, which is not good. Therefore, we can consider using a new input function getch function (in the header file #include < conio. H >), so that we can get the input control characters without entering. In addition, the kbhit function returns 1 when the user has keyboard input, otherwise it returns 0; when there is no keyboard input, the statements below if(kbhit()) will not run, So as to avoid the situation that the user pauses without entering the game.
#include <stdio.h>
#include <stdlib.h>
#include <conio.h>
#pragma warning(disable:4996)
using namespace std;
int main(){
int i, j;
int x = 5;
int y = 10;
char input;
while (true) {
system("cls");
//Output the empty line above the aircraft
for (i = 0; i < x; i++)
printf("\n");
//Output the space on the left of the aircraft
for (j = 0; j < y; j++)
printf(" ");
printf("*");
printf("\n");
if (kbhit()) {
input = getch();
if (input == 'a')
y--;
if (input == 'd')
y++;
if (input == 'w')
x--;
if (input == 's')
x++;
}
}
return 0;
}
1.2. 3 display complex aircraft patterns
If the aircraft is only represented by a "*", it seems a little crude. We can display a more complex aircraft pattern.
#include <stdio.h>
#include <stdlib.h>
#include <conio.h>
#pragma warning(disable:4996)
using namespace std;
int main(){
int i, j;
int x = 5;
int y = 10;
char input;
while (true) {
system("cls");
//Output the empty line above the aircraft
for (i = 0; i < x; i++)
printf("\n");
//Output a complex aircraft pattern
for (j = 0; j < y; j++)
printf(" ");
printf(" *\n");
for (j = 0; j < y; j++)
printf(" ");
printf("*****\n");
for (j = 0; j < y; j++)
printf(" ");
printf(" * * \n");
if (kbhit()) {
input = getch();
if (input == 'a')
y--;
if (input == 'd')
y++;
if (input == 'w')
x--;
if (input == 's')
x++;
}
}
return 0;
}
1.2. 4 emitting laser
We have a plane. How can we be without weapons? Next, we will create a weapon for the aircraft.
Our purpose is that when we press the space, the aircraft will fire laser bullets, that is, a column of vertical lines' | 'will be displayed above the aircraft.
We can define a variable isFire to record whether the aircraft is firing bullets. When isFire is equal to 1, the laser vertical line will be output directly above the aircraft.
#include <stdio.h>
#include <stdlib.h>
#include <conio.h>
#pragma warning(disable:4996)
using namespace std;
int main(){
int i, j;
int x = 5;
int y = 10;
char input;
int isFire = 0;
while (true) {
system("cls");
if (isFire == 0) {
for (j = 0; j < x; j++)
printf("\n");
}
else {
for (i = 0; i < x; i++) {
for (j = 0; j < y; j++)
printf(" ");
printf(" |\n");
}
isFire = 0;
}
//Output a complex aircraft pattern
for (j = 0; j < y; j++)
printf(" ");
printf(" *\n");
for (j = 0; j < y; j++)
printf(" ");
printf("*****\n");
for (j = 0; j < y; j++)
printf(" ");
printf(" * * \n");
if (kbhit()) {
input = getch();
if (input == 'a')
y--;
if (input == 'd')
y++;
if (input == 'w')
x--;
if (input == 's')
x++;
if (input == ' ')
isFire = 1;
}
}
return 0;
}
Target practice
Our plane has a weapon, and then we need an enemy.
We're going to add a target '+' in the first line. We can control the plane to shoot a laser at it. We can define a variable to save one of our achievements.
#include <stdio.h>
#include <stdlib.h>
#include <conio.h>
#pragma warning(disable:4996)
using namespace std;
int main(){
int i, j;
int x = 5;
int y = 10;
char input;
int isFire = 0;
int ny = 5;
int isKilled = 0;
while (true) {
system("cls");
if (!isKilled) {
for (j = 0; j < ny; j++)
printf(" ");
printf("+\n");
}
if (isFire == 0) {
for (j = 0; j < x; j++)
printf("\n");
}
else {
for (i = 0; i < x; i++) {
for (j = 0; j < y; j++)
printf(" ");
printf(" |\n");
}
if (y + 2 == ny)
isKilled = 1;
isFire = 0;
}
//Output a complex aircraft pattern
for (j = 0; j < y; j++)
printf(" ");
printf(" *\n");
for (j = 0; j < y; j++)
printf(" ");
printf("*****\n");
for (j = 0; j < y; j++)
printf(" ");
printf(" * * \n");
if (kbhit()) {
input = getch();
if (input == 'a')
y--;
if (input == 'd')
y++;
if (input == 'w')
x--;
if (input == 's')
x++;
if (input == ' ')
isFire = 1;
}
}
return 0;
}
1.2. 6 free play
For a better game experience, we can implement some other functions.
(1) Let the target move
(2) Statistics and display of scores and other data.
(3) Partition the program.