重构玩家交互事件系统，尝试支持可通过网络传递的自定义事件

parts/gameFuncs.lua

@@ -570,6 +570,16 @@ function applyCustomGame()-- Apply CUSTOMENV, BAG, MISSION
         GAME.modeEnv.mission=nil
     end
 end
+local defaultAttackRule={
+    extraEvent={
+        {'attack',4},
+    },
+    extraEventHandler={
+        attack=function(P,P2,...)
+            P:beAttacked(P2,...)
+        end,
+    },
+}
 function loadGame(mode,ifQuickPlay,ifNet)-- Load a mode and go to game scene
     freshDate()
     if legalGameTime() then
@@ -577,6 +587,7 @@ function loadGame(mode,ifQuickPlay,ifNet)-- Load a mode and go to game scene
             MODES[mode]=require('parts.modes.'..mode)
             MODES[mode].name=mode
         end
+        TABLE.complete(defaultAttackRule,MODES[mode])
         if MODES[mode].score then
             STAT.lastPlay=mode
         end