open coding.c

Snake game with c code. very fun and a lil bit hard

//doubly link list
#include<stdio.h>
#include<conio.h>
#include<dos.h>
#include<time.h>
#include<stdlib.h>
#include<string.h>

struct node{
  int x,y;
  struct node *prev,*next;
}*head=NULL,*curr,*tail;

void push(void){
  curr = (struct node*)malloc(sizeof(struct node));
  if(head==NULL){
	 head=curr;
	 head->prev=NULL;
  }else{
	 tail->next=curr;
	 curr->prev=tail;
  }
  tail=curr;
  tail->next=NULL;
}

void popAll(void) {
  curr=tail;
  while(curr!=NULL) {
	 curr=curr->prev;
	 free(tail);
	 tail=curr;
  }
}

void main() {
  int xm,ym; //Posisi Node
  int xa,ya; //Posisi Buah
  int i;      //Push Pertama
  int makan;
  char tekan;
//  clrscr();
  randomize();
  textcolor(BLUE);
  gotoxy((80-strlen("Prototype Ular Nokia"))/2,12);cprintf("Prototype Ular Nokia");
  getch();
  clrscr();
  _setcursortype(0);
  textcolor(0);
  //ini langkah awal
  xm = -1; //Kekiri
  ym =  0; //nggak begerak vertikal

  //awalnya kita kasi node buat ularnya 4 buah aja
  for(i = 1; i <= 4; i++) {
	 push();
	 curr->x  = 40+i;
	 curr->y  = 3;
  }

  //buat nyetak
  curr = head;
  while (curr != NULL) { //nyetak supaya di perulangan ga nyetak semua lagi
	 textcolor(BLUE);
	 gotoxy(curr->x, curr->y); cprintf("\1");
	 curr = curr->prev;
  }

  //ini posisi buah nya
  xa = rand() % 73 + 2;
  ya = rand() % 21 + 2;
  textcolor(BLUE);
  gotoxy(xa, ya); cprintf("\3");

  //inisialisasi awal yang dimakan
  makan = 0;

  do {
	 /*
	 //artificial intelligentnya bisa gerak ke mana arah makanan
	 //ini kalo gerak ke bawah ato ke atas
	 if ((xm == 0 && ym == -1 || xm == 0 && ym == 1) && head->y == ya) {
		if (head->x < xa) { //Ke kanan
	xm = 1;
	ym = 0;
		}
		else if(head->x > xa) {  //Ke kiri
	xm = -1;
	ym =  0;
		}
	 }
	 //Kalo gerak ke kanan ato kiri
	 if ((xm == 1 && ym == 0 || xm == -1 && ym ==  0) && head->x == xa) {
		if (head->y > ya) { //Ke atas
	xm =  0;
	ym = -1;
		}
		else if(head->y < ya) { //Ke bawah
	xm = 0;
	ym = 1;
		}
	 }
*/

	 if(kbhit()) {
		tekan = getch();
		if(tekan == 0) { 
			tekan = getch();
		}
//pilihan gerak
		switch(tekan) {
	case 72 : if(ym !=  1) {    //=-> Ke Atas
			 xm =  0;
			 ym = -1;
		  }
		  break;
	case 75 : if(xm !=  1) {    //=-> Ke Kiri
			 xm = -1;
			 ym =  0;
		  }
		  break;
	case 77 : if(xm != -1) {    //=-> Ke Kanan
			 xm = 1;
			 ym = 0;
		  }
		  break;
	case 80 : if(ym != -1) {    //=-> Ke Bawah
			 xm = 0;
			 ym = 1;
		  }
		  break;
		}
	 }


	 gotoxy(head->x, head->y); printf("\1"); //node selain head ga usah di cetak
	 delay(50);
	 if(tekan != 27) { //Kalo keluar tailnya ga di apus jd jml node bener
		gotoxy(tail->x, tail->y); printf(" "); //hapus yg paling akhir
	 }

	 //Kalo nabrak makanan push 1 node di ekor & bikin makanan baru
	 if(head->x == xa && head->y == ya) {
		push();
		tail->x = tail->x + xm;
		tail->y = tail->y + ym;
		makan++;
		//ini untuk jumlah yg dimakan, bila 15 maka menang
		if(makan == 15) {
			tekan  = 27;
			clrscr();
			gotoxy((80-strlen("Menang"))/2,12);printf("Menang");
			getch();
			break;
		}else { //kalo else maka akan dirandom lagi posisi makanan baru
			xa = rand() % 73 + 2;
			ya = rand() % 21 + 2;
			textcolor(BLUE);
			gotoxy(xa, ya); cprintf("\3");
		}
	 }

	 //Ngikutin arah belok head utk masing2 node
	 curr = tail;
	 do {
		if(curr->prev != NULL) {
	curr->x  = curr->prev->x;
	curr->y  = curr->prev->y;
	curr     = curr->prev;
		}
	 }while(curr != head);

	 //Kalo nabrak badan keluar
	 curr = tail;
	 do {
		if(curr->prev != NULL) {
	if(head->x == curr->x && head->y == curr->y) {
	  tekan = 27;
	  break;
	}
	curr = curr->prev;
		}
	 }while(curr->prev != head);

//buat tembus2
	 if(head->x ==  1 && xm == -1 && ym == 0) {
		head->x = 80;
	 }
	 if(head->x == 80 && xm ==  1 && ym == 0) {
		head->x =  1;
	 }
	 if(head->y ==  1 && xm == 0 && ym == -1) {
		head->y = 25;
	 }
	 if(head->y == 25 && xm == 0 &&  ym == 1) {
		head->y =  1;
	 }
	 head->x += xm;
	 head->y += ym;
  }while(tekan != 27);
  //buat free semua
	 popAll();
}