+
+// x-encoding (encoding as zero length invisible string)
+const string XENCODE_2 = "xX";
+const string XENCODE_22 = "0123456789abcdefABCDEF";
+string xencode(float f)
+{
+ float a, b, c, d;
+ d = mod(f, 22); f = floor(f / 22);
+ c = mod(f, 22); f = floor(f / 22);
+ b = mod(f, 22); f = floor(f / 22);
+ a = mod(f, 2); // f = floor(f / 2);
+ return strcat(
+ "^",
+ substring(XENCODE_2, a, 1),
+ substring(XENCODE_22, b, 1),
+ substring(XENCODE_22, c, 1),
+ substring(XENCODE_22, d, 1)
+ );
+}
+float xdecode(string s)
+{
+ float a, b, c, d;
+ if(substring(s, 0, 1) != "^")
+ return -1;
+ if(strlen(s) < 5)
+ return -1;
+ a = strstrofs(XENCODE_2, substring(s, 1, 1), 0);
+ b = strstrofs(XENCODE_22, substring(s, 2, 1), 0);
+ c = strstrofs(XENCODE_22, substring(s, 3, 1), 0);
+ d = strstrofs(XENCODE_22, substring(s, 4, 1), 0);
+ if(a < 0 || b < 0 || c < 0 || d < 0)
+ return -1;
+ return ((a * 22 + b) * 22 + c) * 22 + d;
+}
+
+float lowestbit(float f)
+{
+ f &~= f * 2;
+ f &~= f * 4;
+ f &~= f * 16;
+ f &~= f * 256;
+ f &~= f * 65536;
+ return f;
+}
+
+#ifdef CSQC
+entity ReadCSQCEntity()
+{
+ float f;
+ f = ReadShort();
+ if(f == 0)
+ return world;
+ return findfloat(world, entnum, f);
+}
+#endif
+
+float shutdown_running;
+#ifdef SVQC
+void SV_Shutdown()
+#endif
+#ifdef CSQC
+void CSQC_Shutdown()
+#endif
+#ifdef MENUQC
+void m_shutdown()
+#endif
+{
+ if(shutdown_running)
+ {
+ print("Recursive shutdown detected! Only restoring cvars...\n");
+ }
+ else
+ {
+ shutdown_running = 1;
+ Shutdown();
+ }
+ cvar_settemp_restore(); // this must be done LAST, but in any case
+}