Fixing the raycaster example so it will compile on Linux
#include <string.h>
#include <stddef.h>
+#include <stdint.h>
#include <assert.h>
#include <stdio.h>
#include <math.h>
#include "sbuf.c"
+#ifndef M_PI
+#define M_PI (3.14159265358979323846264338327950288)
+#endif
+
#include "domath.c"
#include "dome.h"
