board automatically shrinks if terminal is too small

1 files changed, 10 insertions, 1 deletions

diff --git a/snake.c b/snake.c
index 2afd70d..242ea27 100644
--- a/snake.c
+++ b/snake.c
@@ -3,6 +3,7 @@
 #include <time.h>
 #include <pthread.h>
 #include <signal.h> //handling ctrl-c
+#include <sys/ioctl.h> //terminal size
 #include "vector.h"
 #include "snake.h"
 #include "conio.h"
@@ -14,13 +15,21 @@ void interrupt_handler(int sig) {
 	INT_CTRL_C = 1;
 }
 
-int boardSize = 12;
+int boardSize = 15;
 const int updateInterval = 300000000L;
 vectorp_t snakePositions; 
 vector_t foodPos;
 vector_t lastMoveDir;
 
 int main(int argc, char **argv) {
+	//get terminal size
+	struct winsize win;
+	ioctl(fileno(stdout), TIOCGWINSZ, &win);
+	int width = (int)(win.ws_col);
+	int height = (int)(win.ws_row);
+	//multiplied by 2 to account for the fact that the board is twice as wide as high
+	int smallestAxis = width / 2 < height ? width / 2 : height;
+	boardSize = smallestAxis < boardSize ? smallestAxis : boardSize;
 	//hide cursor
 	printf("\e[?25l");
 	//make a new thread handling interrupts