[cl_menu] Add CvarIntRange for integer sliders

Fixes viewsize not working (sort of: the slider now works, but the cvar
itself does not, but that's an engine issue).

ruamoko/cl_menu/CvarRange.h

@@ -14,4 +14,15 @@
 -(int)percentage;
 @end
 
+@interface CvarIntRange : CvarObject
+{
+	int min, max, step;
+}
+-(id)initWithCvar:(string)cvname min:(int)_min max:(int)_max step:(int)_step;
+-(void)inc;
+-(void)dec;
+-(float)value;
+-(int)percentage;
+@end
+
 #endif//__CvarRange_h

ruamoko/cl_menu/CvarRange.r

@@ -41,3 +41,42 @@
 }
 
 @end
+
+@implementation CvarIntRange
+
+-(id)initWithCvar:(string)cvname min:(int)_min max:(int)_max step:(int)_step
+{
+	self = [super initWithCvar: cvname];
+
+	min = _min;
+	max = _max;
+	step = _step;
+
+	return self;
+}
+
+-(void)inc
+{
+	local int val = Cvar_GetInteger (name);
+	val = min_max_cnt (min, max, step, val, 1);
+	Cvar_SetInteger (name, val);
+}
+
+-(void)dec
+{
+	local int val = Cvar_GetInteger (name);
+	val = min_max_cnt (min, max, step, val, 0);
+	Cvar_SetInteger (name, val);
+}
+
+-(float)value
+{
+	return Cvar_GetInteger (name);
+}
+
+-(int)percentage
+{
+	return to_percentage(min, max, Cvar_GetInteger (name));
+}
+
+@end

ruamoko/cl_menu/menu.plist

@@ -282,10 +282,10 @@
 				);
 				rect = "[70, 110, 224, 8]";
 				range = {
-					Class = CvarRange;
+					Class = CvarIntRange;
 					Messages = (
 						(initWithCvar:min:max:step:,
-							"\"viewsize\"", 30.0, 120.0, 10.0)
+							"\"viewsize\"", 30, 120, 10)
 					);
 				};
 			}