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# 示例：使用复合规则创建与属性相似或选择相似的玩家的对战
<a name="match-examples-10"></a>

此示例说明如何使用 `compound` 为两个团队的对战设置规则集。在示例中：
+ 该 `SimilarLeagueDistance` 规则确保一场对战中的所有玩家与其他玩家具有 2 以内的 `league`。
+ 该 `SimilarSkillDistance` 规则确保一场对战中的所有玩家与其他玩家具有 10 以内的 `skill`。如果玩家等待 10 秒，则距离将扩大到 20 秒。如果玩家等待 20 秒，则距离将扩大到 40 秒。
+ 该 `SameMapComparison` 规则确保对战中的所有玩家都提出同样的 `map`。
+ 该 `SameModeComparison` 规则确保对战中的所有玩家都提出同样的 `mode`。
+ 如果满足以下任意条件，`CompoundRuleMatchmaker` 规则确保：
  + 一场对战中的玩家提出了同样的 `map` 和 `mode`。
  + 对战中的玩家具有不相上下的 `skill` 和 `league` 属性。

```
{
    "ruleLanguageVersion": "1.0",
    "teams": [{
        "name": "red",
        "minPlayers": 10,
        "maxPlayers": 20
    }, {
        "name": "blue",
        "minPlayers": 10,
        "maxPlayers": 20
    }],
    "algorithm": {
        "strategy":"balanced",
        "balancedAttribute": "skill",
        "batchingPreference":"fastestRegion"
    },
    "playerAttributes": [{
        "name": "league",
        "type": "number"
    },{
        "name": "skill",
        "type": "number"
    },{
        "name": "map",
        "type": "string"
    },{
        "name": "mode",
        "type": "string"
    }],
    "rules": [{
        "name": "SimilarLeagueDistance",
        "type": "distance",
        "measurements": ["max(flatten(teams[*].players.attributes[league]))"],
        "referenceValue": "min(flatten(teams[*].players.attributes[league]))",
        "maxDistance": 2
    }, {
        "name": "SimilarSkillDistance",
        "type": "distance",
        "measurements": ["max(flatten(teams[*].players.attributes[skill]))"],
        "referenceValue": "min(flatten(teams[*].players.attributes[skill]))",
        "maxDistance": 10
    }, {
        "name": "SameMapComparison",
        "type": "comparison",
        "operation": "=",
        "measurements": ["flatten(teams[*].players.attributes[map])"]
    }, {
        "name": "SameModeComparison",
        "type": "comparison",
        "operation": "=",
        "measurements": ["flatten(teams[*].players.attributes[mode])"]
    }, {
        "name": "CompoundRuleMatchmaker",
        "type": "compound",
        "statement": "or(and(SameMapComparison, SameModeComparison), and(SimilarSkillDistance, SimilarLeagueDistance))"
    }],
    "expansions": [{
        "target": "rules[SimilarSkillDistance].maxDistance",
        "steps": [{
            "waitTimeSeconds": 10,
            "value": 20
        }, {
            "waitTimeSeconds": 20,
            "value": 40
        }]
    }]
}
```