snake

commit 5eb5b08221c31fc16ef84f12ac921693fbf7fdca
parent a110c10d086bb7bacde95ed340b1d20f39373349
Author: Michael Constantine Dimopoulos <31562759+MichaelDim02@users.noreply.github.com>
Date:   Sun,  6 Mar 2022 20:48:06 +0000

Add files via upload
Diffstat:
A
snake.c
 | 
232
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

1 file changed, 232 insertions(+), 0 deletions(-)
diff --git a/snake.c b/snake.c
@@ -0,0 +1,232 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+#include <unistd.h>
+#include <X11/Xlib.h>
+#include "X11/keysym.h"
+
+
+#define X 20  /* vertical */
+#define Y 50 /* horizontal */
+
+#define VOID ' '
+#define CELL '#'
+#define APPL 'o'
+#define WALL '$'
+
+char a[X][Y];
+int score = 0;
+
+
+typedef struct position {
+	int x;
+	int y;
+} Position;
+
+
+typedef struct snake {
+	Position cells[100];
+	int direction[100];
+	int length;
+} Snake;
+
+
+void
+print_panel()
+{
+	printf("\033[0;0H");
+
+	int i;
+	for (i = 0; i < Y + 2; i++) {
+		printf("%c", WALL);
+	}
+	printf("\n");
+
+	int j;
+	for (i = 0; i < X; i++) {
+		printf("%c", WALL);
+		for (j = 0; j < Y; j++) {
+			printf("%c",a[i][j]);
+		}
+		printf("%c\n", WALL);
+	}
+
+	for (i = 0; i < Y + 2; i++) {
+		printf("%c", WALL);
+	}
+	printf("\n");
+}
+
+void
+fill_array(char panel[][Y])
+{
+	int i, j;
+	for (i = 0; i < X; i++) {
+		for (j = 0; j < Y; j++) {
+			panel[i][j] = VOID;
+		}
+	}
+}
+
+void
+update_snake(Snake snake)
+{
+	int i;
+	for (i = 0; i < snake.length; i++) {
+		a[snake.cells[i].x][snake.cells[i].y] = CELL;
+	}
+
+	int x = snake.cells[snake.length-1].x;
+	int y = snake.cells[snake.length-1].y;
+
+	if (snake.direction[0] == 1)
+		y = snake.cells[snake.length - 1].y - snake.length -1;
+	else if (snake.direction[0] == 2)
+		y = snake.cells[snake.length - 1].y + snake.length +1;
+	else if (snake.direction[0] == 3)
+		x = snake.cells[snake.length - 1].x - snake.length -1;
+	else if (snake.direction[0] == 4)
+		x = snake.cells[snake.length - 1].x + snake.length +1;
+
+	/*if (snake.direction[snake.length-1] == 1)
+		y = snake.cells[snake.length-1].y -1;
+	else if (snake.direction[snake.length-1] == 2)
+		y = snake.cells[snake.length-1].y  +1;
+	else if (snake.direction[snake.length-1] == 3)
+		x = snake.cells[snake.length-1].x - 1;
+	else if (snake.direction[snake.length-1]  == 4)
+		x = snake.cells[snake.length - 1].x +1;*/
+
+	a[x][y] = VOID;
+}
+
+Position
+get_apple()
+{
+	Position apple;
+
+	do {
+		srand(time(0));
+		apple.x = rand() % (X - 0 + 1);
+
+		srand(time(0));
+		apple.y = rand() % (Y - 0 + 1);
+
+	} while (a[apple.x][apple.y] == CELL);
+
+	a[apple.x][apple.y] = APPL;
+
+	return apple;
+}
+
+
+int
+key_is_pressed(KeySym ks)
+{
+	Display *dpy = XOpenDisplay(":0");
+	char keys_return[32];
+	XQueryKeymap(dpy, keys_return);
+	KeyCode kc2 = XKeysymToKeycode(dpy, ks);
+	int isPressed = !!(keys_return[kc2 >> 3] & (1 << (kc2 & 7)));
+	XCloseDisplay(dpy);
+	return isPressed;
+}
+
+Snake
+get_keys(Snake snake)
+{
+	for (int i = 0; i < snake.length; i++)
+		snake.direction[i+1] = snake.direction[i];
+
+
+	if (key_is_pressed(XK_Up) || key_is_pressed(XK_W)) {
+		snake.direction[0] = 4;
+	}
+
+	if (key_is_pressed(XK_Down) || key_is_pressed(XK_S)) {
+		snake.direction[0] = 3;
+	}
+
+	if (key_is_pressed(XK_Left) || key_is_pressed(XK_A)) {
+		snake.direction[0] = 2;
+	}
+
+	if (key_is_pressed(XK_Right) || key_is_pressed(XK_D)) {
+		snake.direction[0] = 1;
+	}
+	return snake;
+}
+
+Snake
+generation(Snake snake)
+{
+	for (int i = 0; i <= snake.length; i++) {
+		snake.cells[i+1].y = snake.cells[i].y;
+		snake.cells[i+1].x = snake.cells[i].x;
+	}
+
+	if (snake.direction[0] == 1) {
+		snake.cells[0].y++;
+	} else if (snake.direction[0] == 2) {
+		snake.cells[0].y--;
+	} else if (snake.direction[0] == 3) {
+		snake.cells[0].x++;
+	} else if (snake.direction[0] == 4) {
+		snake.cells[0].x--;
+	}
+
+	return snake;
+}
+
+int
+main()
+{
+	fill_array(a);
+
+	Snake snake;
+
+	snake.length = 1;
+	snake.cells[0].y = Y / 2;
+	snake.cells[0].x = X / 2;
+
+	snake.direction[0] = 2;
+	Position apple = get_apple();
+	print_panel();
+
+	do {
+		if (snake.cells[0].x == apple.x &&
+	    	    snake.cells[0].y == apple.y) {
+			apple = get_apple();
+			score += 10;
+
+			int x = snake.cells[snake.length-1].x;
+			int y = snake.cells[snake.length-1].y;
+
+			if (snake.direction[snake.length - 1] == 1)
+				y = snake.cells[snake.length - 1].y + 1;
+			else if (snake.direction[snake.length - 1] == 2)
+				y = snake.cells[snake.length - 1].y - 1;
+			else if (snake.direction[snake.length - 1] == 3)
+				x = snake.cells[snake.length - 1].x + 1;
+			else if (snake.direction[snake.length - 1] == 4)
+				x = snake.cells[snake.length - 1].x - 1;
+
+			snake.length++;
+			snake.cells[snake.length-1].x = x;
+			snake.cells[snake.length-1].y = y;
+		}
+
+		update_snake(snake);
+		print_panel();
+		printf("x=%d, y=%d\n", snake.cells[0].x, snake.cells[0].y);
+		printf("score: %d\nlength: %d\n", score, snake.length);
+
+		snake = get_keys(snake);
+		snake = generation(snake);
+
+		usleep(60000);
+
+	} while (1);
+
+	return 0;
+}