(svn r20332) -Add: [NewGRF] AdvVarAct2 operators for SHL, SHR and SAR.

src/newgrf_spritegroup.cpp

@@ -124,6 +124,9 @@ static U EvalAdjustT(const DeterministicSpriteGroupAdjust *adjust, ResolverObjec
 		case DSGA_OP_ROR:  return RotateRight(last_value, value);
 		case DSGA_OP_SCMP: return ((S)last_value == (S)value) ? 1 : ((S)last_value < (S)value ? 0 : 2);
 		case DSGA_OP_UCMP: return ((U)last_value == (U)value) ? 1 : ((U)last_value < (U)value ? 0 : 2);
+		case DSGA_OP_SHL:  return (U)last_value << (U)value;
+		case DSGA_OP_SHR:  return (U)last_value >> (U)value;
+		case DSGA_OP_SAR:  return (S)last_value >> (U)value;
 		default:           return value;
 	}
 }

src/newgrf_spritegroup.h

@@ -151,6 +151,9 @@ enum DeterministicSpriteGroupAdjustOperation {
 	DSGA_OP_ROR,  ///< rotate a b positions to the right
 	DSGA_OP_SCMP, ///< (signed) comparision (a < b -> 0, a == b = 1, a > b = 2)
 	DSGA_OP_UCMP, ///< (unsigned) comparision (a < b -> 0, a == b = 1, a > b = 2)
+	DSGA_OP_SHL,  ///< a << b
+	DSGA_OP_SHR,  ///< (unsigned) a >> b
+	DSGA_OP_SAR,  ///< (signed) a >> b
 };