First prototype of armor appearance mod (hook-based)

- Add test version of gl_npcarmor script with config file for FO2 RP
- Add some useful scripting headers
- Add new scripting functions to sfall.h

artifacts/scripting/headers/lib.math.h

@@ -0,0 +1,47 @@
+#ifndef LIB_MATH_H
+#define LIB_MATH_H
+
+/**
+  Numbers...
+*/
+
+#define MAX(x, y)    ((x > y) * x + (x <= y) * y)
+#define MIN(x, y)    ((x < y) * x + (x >= y) * y)
+#define in_range(x, from, to)    (x >= from and x <= to)
+
+procedure max(variable x, variable y) begin
+   if (x > y) then return x;
+   return y;
+end
+
+procedure min(variable x, variable y) begin
+   if (x < y) then return x;
+   return y;
+end
+
+/*procedure round(variable val) begin
+	variable intp;
+	intp := floor(val);
+	if ((val-intp) >= 0.5) then intp++;
+	return intp;
+end*/
+
+procedure ceil(variable val) begin
+	variable intp;
+	intp := floor(val);
+	if (abs(val-intp) > 0.0) then begin
+	   intp++;
+	end
+	return intp;
+end
+
+
+procedure cap_number(variable num, variable min, variable max) begin
+	if (num > max) then num := max;
+	else if (num < min) then num := min;
+	return num;
+end
+
+
+
+#endif