<?xml version="1.0"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
	   elementFormDefault="qualified">
  <xs:annotation>
    <xs:documentation>
      
      Copyright (C) 2002-2015  The FreeCol Team

      This file is part of FreeCol.

      FreeCol is free software: you can redistribute it and/or modify
      it under the terms of the GNU General Public License as published by
      the Free Software Foundation, either version 2 of the License, or
      (at your option) any later version.

      FreeCol is distributed in the hope that it will be useful,
      but WITHOUT ANY WARRANTY; without even the implied warranty of
      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
      GNU General Public License for more details.

      You should have received a copy of the GNU General Public License
      along with FreeCol. If not, see http://www.gnu.org/licenses
    </xs:documentation>
  </xs:annotation>

  <xs:include schemaLocation="data-common.xsd" />

  <xs:element name="modifier">
    <xs:annotation>
      <xs:documentation>
	WARNING! Asymmetric read/write
      </xs:documentation>
    </xs:annotation>
    <xs:complexType>
      <xs:sequence>
        <xs:element minOccurs="0" maxOccurs="unbounded" ref="scope"/>
      </xs:sequence>

      <xs:attribute name="id" type="xs:string" use="optional" />
      <xs:attribute name="source" type="xs:string" use="optional" />
      <xs:attribute name="index" type="xs:int" use="optional" />
      <xs:attribute name="firstTurn" type="xs:int" use="optional" />
      <xs:attribute name="lastTurn" type="xs:int" use="optional" />

      <xs:attribute name="value" type="xs:float" use="required" />
      <xs:attribute name="type" type="ModifierType" use="required" />

      <xs:attribute name="increment-type" type="ModifierType" use="optional" />
      <xs:attribute name="increment" type="xs:float" use="optional" />
      <xs:attribute name="duration" type="xs:int" use="optional" />
      <xs:attribute name="temporary" type="xs:boolean" use="optional" />
      <!-- @compat 0.11.3 -->
      <xs:attribute name="incrementType" type="ModifierType" use="optional" />
      <!-- end @compat 0.11.3 -->
    </xs:complexType>
  </xs:element>

  <xs:simpleType name="ModifierType">
    <xs:restriction base="xs:NMTOKEN">
      <xs:enumeration value="additive" />
      <xs:enumeration value="multiplicative" />
      <xs:enumeration value="percentage" />
      <!-- @compat 0.10.7 -->
      <xs:enumeration value="ADDITIVE" />
      <xs:enumeration value="MULTIPLICATIVE" />
      <xs:enumeration value="PERCENTAGE" />
      <!-- end @compat -->
    </xs:restriction>
  </xs:simpleType>

</xs:schema>
