Add two player mode fixes

src/dhgr.tk/gg/sean.pla

@@ -1108,7 +1108,7 @@ def actionUpdatePlayer(event)#0
     byte moveDir
 
     moveDir = getPlayerKbd
-    if not moveDir
+    if moveDir == MOVE_NONE
         moveDir = getPlayerJoy
     fin
     moveNerd(nerdPlayer, moveDir)
@@ -1635,7 +1635,7 @@ if tileList <> NULL and spriteList <> NULL
         loop
         if nerdPlayer2 < NUM_NERDS
             dcgrColor(CLR_BLACK)
-            dcgrRect(3*TILE_WIDTH, 3*TILE_HEIGHT, 4*TILE_WIDTH, 3*TILE_HEIGHT)
+            dhgrClearBl7(3*TILE_WIDTH7, 3*TILE_HEIGHT, 4*TILE_WIDTH7, 3*TILE_HEIGHT)
             dcgrColor(CLR_WHITE)
             dcgrStr(82-32, 4*TILE_HEIGHT, "Player1:")
             dcgrStr(82,    4*TILE_HEIGHT, itoa(@params, totalScore))