重构模式环境的dropPiece和task事件为更强大的自定义和未来联网任意模式做准备

整理出所有模式的这两个事件独立到一个文件夹并整理所有模式引用它们的方式
警告：很可能有错误，需要他人帮助测试

parts/player/player.lua

@@ -290,6 +290,13 @@ function Player:setRS(RSname)
     if self.cur then self.cur.RS=rs end
 end
 
+function Player:triggerDropEvents()
+    local L=self.gameEnv.dropPiece
+    for i=1,#L do
+        L[i](self)
+    end
+end
+
 function Player:getHolePos()--Get a good garbage-line hole position
     if self.garbageBeneath==0 then
         return generateLine(self.holeRND:random(10))
@@ -1183,7 +1190,7 @@ do--Player.drop(self)--Place piece
         if finePts<5 then
             Stat.extraPiece=Stat.extraPiece+1
             if ENV.fineKill then
-                finish=true
+                finish='lose'
             end
             if self.sound then
                 if ENV.fineKill then
@@ -1349,7 +1356,7 @@ do--Player.drop(self)--Place piece
             if self.b2b>1000 then
                 self.b2b=1000
             elseif self.b2b==0 and ENV.b2bKill then
-                finish=true
+                finish='lose'
             end
 
             --Bonus atk/def when focused
@@ -1468,7 +1475,7 @@ do--Player.drop(self)--Place piece
             elseif ENV.missionKill then
                 self:_showText(text.missionFailed,0,140,40,'flicker',.5)
                 SFX.play('finesseError_long',.6)
-                finish=true
+                finish='lose'
             end
         end
 
@@ -1513,11 +1520,14 @@ do--Player.drop(self)--Place piece
         end
 
         if finish then
-            if finish==true then self:lose()return end
-            _=ENV.dropPiece if _ then _(self)end
-            if finish then self:win(finish)end
+            if finish=='lose'then
+                self:lose()
+            else
+                self:triggerDropEvents()
+                if finish then self:win(finish)end
+            end
         else
-            _=ENV.dropPiece if _ then _(self)end
+            self:triggerDropEvents()
         end
     end
 end