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Space Invaders game .c
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Space Invaders game .c
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#include <stdio.h>
#include <stdlib.h>
#include <conio.h>
#include <windows.h>
int main()
{
int sizey = 23;
int sizex = 40;
int x, y, yi;
char world[sizey][sizex];
char player = 'A';
char playerLaser = '^';
char enemy = 'M';
char enemyShielded = 'O';
char enemyLaser = 'U';
char explosion = 'X';
int score = 0;
int victory = 1;
int laserReady = 1;
int enemyReady = 0;
srand(time(NULL));
/*welcome screen*/
printf("\n \n Welcome soldier! \n \n \n \n");
Sleep(1000);
printf(" Brave the COMMAND PROMPT INVADERS and come back a hero. \n \n \n \n");
Sleep(2500);
printf(" Your operating system is depending upon you. \n \n \n \n");
Sleep(2500);
printf(" Good luck.");
Sleep(1000);
printf("\n \n \n \n Press any key to start.");
getch();
/*initialise world*/
int totalEnemies = 0;
for (x = 0; x < sizex; x ++) {
for (y = 0; y < sizey; y ++) {
if ((y+1) % 2 == 0 && y < 7 && x > 4
&& x < sizex - 5 && x % 2 ==0) {
world[y][x] = enemy;
totalEnemies ++;
}
else if ((y+1) % 2 == 0 && y >= 7 && y < 9 && x > 4
&& x < sizex - 5 && x % 2 ==0){
world[y][x] = enemyShielded;
totalEnemies = totalEnemies + 2;
}
else {
world[y][x] = ' ';
}
}
}
world[sizey - 1][sizex / 2] = player;
int i = 1;
char direction = 'l';
int keyPress;
int currentEnemies = totalEnemies;
while(currentEnemies > 0 && victory) {
int drop = 0;
int enemySpeed = 1 + 10 * currentEnemies / totalEnemies;
laserReady ++;
/*display world*/
system("cls");
printf(" SCORE: %d", score);
printf("\n");
for (y = 0; y < sizey; y ++) {
printf("|");
for (x = 0; x < sizex; x ++) {
printf("%c",world[y][x]);
}
printf("|");
printf("\n");
}
/*laser time*/
for (x = 0; x < sizex; x ++) {
for (y = sizey-1; y >= 0; y --) {
if (i%2 == 0 && world[y][x] == enemyLaser
&& (world[y+1][x] != enemy & world[y+1][x] != enemyShielded)){
world[y+1][x] = enemyLaser;
world[y][x] = ' ';
}
else if (i%2 == 0 && world[y][x] == enemyLaser
&& (world[y+1][x] == enemy | world[y+1][x] == enemyShielded)){
world[y][x] = ' ';
}
}
}
for (x = 0; x < sizex; x ++) {
for (y = 0; y < sizey; y ++) {
if ((i % 5) == 0 && (world[y][x] == enemyShielded
| world[y][x] == enemy) && (rand() % 15) > 13
&& world[y+1][x] != playerLaser) {
for (yi = y+1; yi < sizey; yi ++) {
if (world[yi][x] == enemy
| world[yi][x] == enemyShielded) {
enemyReady = 0;
break;
}
enemyReady = 1;
}
if (enemyReady) {
world[y+1][x] = enemyLaser;
}
}
if (world[y][x] == playerLaser && world[y-1][x] == enemy) {
world[y][x] = ' ';
world[y-1][x] = explosion;
currentEnemies --;
score = score + 50;
}
else if (world[y][x] == playerLaser
&& world[y-1][x] == enemyShielded) {
world[y][x] = ' ';
world[y-1][x] = enemy;
currentEnemies --;
score = score + 50;
}
else if (world[y][x] == playerLaser
&& world[y-1][x] == enemyLaser) {
world[y][x] = ' ';
}
else if (world[y][x] == explosion) {
world[y][x] = ' ';
}
else if ((i+1) % 2 == 0 && world[y][x] == enemyLaser
&& world[y+1][x] == player) {
world[y+1][x] = explosion;
world[y][x] = ' ';
victory = 0;
}
else if (world[y][x] == playerLaser
&& world[y-1][x] != enemyLaser) {
world[y][x] = ' ';
world[y-1][x] = playerLaser;
}
}
}
/*update enemy direction*/
for (y = 0; y < sizey; y ++) {
if (world[y][0] == enemy) {
direction = 'r';
drop = 1;
break;
}
if (world[y][sizex-1] == enemy){
direction = 'l';
drop = 1;
break;
}
}
/*update board*/
if (i % enemySpeed == 0) {
if (direction == 'l') {
for (x = 0; x < sizex - 1; x ++) {
for (y = 0; y < sizey; y ++) {
if (drop && (world[y-1][x+1] == enemy
|| world[y-1][x+1] == enemyShielded)){
world[y][x] = world[y-1][x+1];
world[y-1][x+1] = ' ';
}
else if (!drop && (world[y][x+1] == enemy
|| world[y][x+1] == enemyShielded)) {
world[y][x] = world[y][x+1];
world[y][x+1] = ' ';
}
}
}
}
else {
for (x = sizex; x > 0; x --) {
for (y = 0; y < sizey; y ++) {
if (drop && (world[y-1][x-1] == enemy
|| world[y-1][x-1] == enemyShielded)) {
world[y][x] = world[y-1][x-1];
world[y-1][x-1] = ' ';
}
else if (!drop && (world[y][x-1] == enemy
|| world[y][x-1] == enemyShielded)) {
world[y][x] = world[y][x-1];
world[y][x-1] = ' ';
}
}
}
}
for (x = 0; x < sizex; x ++) {
if (world[sizey - 1][x] == enemy) {
victory = 0;
}
}
}
/*control player*/
if(kbhit()){
keyPress = getch();
}
else {
keyPress =0;
}
if (keyPress == 75) {
for (x = 0; x < sizex; x = x+1) {
if ( world[sizey-1][x+1] == player) {
world[sizey-1][x] = player;
world[sizey-1][x+1] = ' ';
}
}
}
if (keyPress == 77) {
for (x = sizex - 1; x > 0; x = x-1) {
if ( world[sizey-1][x-1] == player) {
world[sizey-1][x] = player;
world[sizey-1][x-1] = ' ';
}
}
}
if (keyPress == 32 && laserReady > 2) {
for (x = 0; x < sizex; x = x+1) {
if ( world[sizey-1][x] == player) {
world[sizey - 2][x] = playerLaser;
laserReady = 0;
}
}
}
i ++;
Sleep(50);
}
system("cls");
printf(" SCORE: %d", score);
printf("\n");
for (y = 0; y < sizey; y ++) {
printf("|");
for (x = 0; x < sizex; x ++) {
printf("%c",world[y][x]);
}
printf("|");
printf("\n");
}
Sleep(1000);
system("cls");
if (victory != 0) {
printf("\n \n \n \n \n \n CONGRATULATIONS! \n \n \n \n \n");
Sleep(1000);
printf("\n \n Score: %d", score);
Sleep(1000);
int bonus = totalEnemies*20 - i;
printf("\n \n Bonus: %d", bonus);
Sleep(1000);
printf("\n \n Total Score: %d", score + bonus);
printf("\n \n \n \n Well done");
Sleep(1000);
printf(", Hero.");
Sleep(1000);
getch();
}
else {
printf("\n \n \n \n \n \n You have failed.");
Sleep(1000);
printf("\n \n \n \n \n \n Windows is doomed.");
Sleep(1000);
printf("\n \n Final Score: %d", score);
getch();
}
}