Fix issue #77 and improve findPath

modules/game_interface/gameinterface.lua

@@ -405,7 +405,7 @@ function processMouseAction(menuPosition, mouseButton, autoWalkPos, lookThing, u
   end
 
   if autoWalkPos and keyboardModifiers == KeyboardNoModifier and mouseButton == MouseLeftButton then
-    local dirs = g_map.findPath(g_game.getLocalPlayer():getPosition(), autoWalkPos, 127)
+    local dirs = g_map.findPath(g_game.getLocalPlayer():getPosition(), autoWalkPos, 127, PathFindFlags.AllowNullTiles)
     if #dirs == 0 then
       modules.game_textmessage.displayStatusMessage(tr('There is no way.'))
       return true

modules/game_minimap/minimap.lua

@@ -160,9 +160,9 @@ function onMinimapMouseRelease(self, mousePosition, mouseButton)
     navigating = false
     return
   end
-  local tile = self:getTile(mousePosition)
-  if tile and mouseButton == MouseLeftButton and self:isPressed() then
-    local dirs = g_map.findPath(g_game.getLocalPlayer():getPosition(), tile:getPosition(), 127)
+  local pos = self:getPosition(mousePosition)
+  if pos and mouseButton == MouseLeftButton and self:isPressed() then
+    local dirs = g_map.findPath(g_game.getLocalPlayer():getPosition(), pos, 127, PathFindFlags.AllowNullTiles)
     if #dirs == 0 then
       modules.game_textmessage.displayStatusMessage(tr('There is no way.'))
       return true

modules/gamelib/const.lua

@@ -156,4 +156,19 @@ OsTypes = {
   OtclientMac = 12
 }
 
+PathFindResults = {
+    Ok = 0,
+    Position = 1,
+    Impossipble = 2,
+    TooFar = 3,
+    NoWay = 4
+}
+
+PathFindFlags = {
+    AllowNullTiles = 1,
+    AllowCreatures = 2,
+    AllowNonPathable = 4,
+    AllowNonWalkable = 8
+}
+
 -- @}