(svn r2971) - Newgrf: Support loading VarAction2 parameter for variables 0x60-0x7F. This parameter isn't used yet.

newgrf.c

@@ -1268,6 +1268,9 @@ static void NewSpriteGroup(byte *buf, int len)
 
 		dg->var_scope = numloaded == 0x82 ? VSG_SCOPE_PARENT : VSG_SCOPE_SELF;
 		dg->variable = grf_load_byte(&buf);
+		/* Variables 0x60 - 0x7F include an extra parameter */
+		if (IS_BYTE_INSIDE(dg->variable, 0x60, 0x80))
+			dg->parameter = grf_load_byte(&buf);
 
 		dg->shift_num = grf_load_byte(&buf);
 		dg->and_mask = grf_load_byte(&buf);

sprite.h

@@ -70,6 +70,7 @@ typedef struct DeterministicSpriteGroup {
 	// Take this variable:
 	VarSpriteGroupScope var_scope;
 	byte variable;
+	byte parameter; ///< Used for variables between 0x60 and 0x7F inclusive.
 
 	// Do this with it:
 	byte shift_num;