From 29ad6702ab90fc75fe9d0422609609fd15123fc3 Mon Sep 17 00:00:00 2001
From: Andrei Karas <akaras@inbox.ru>
Date: Wed, 26 Sep 2012 01:57:54 +0300
Subject: Some error fixes in atlases.

Check if image already in cache and check for mapinfo before using it.
---
 src/resources/atlasmanager.cpp    | 8 ++++++++
 src/resources/mapdb.cpp           | 6 +++++-
 src/resources/mapreader.cpp       | 7 +++++--
 src/resources/resourcemanager.cpp | 6 ++++++
 src/resources/resourcemanager.h   | 3 +++
 5 files changed, 27 insertions(+), 3 deletions(-)

(limited to 'src/resources')

diff --git a/src/resources/atlasmanager.cpp b/src/resources/atlasmanager.cpp
index 770e43412..401dba0cb 100644
--- a/src/resources/atlasmanager.cpp
+++ b/src/resources/atlasmanager.cpp
@@ -92,10 +92,18 @@ AtlasResource *AtlasManager::loadTextureAtlas(const std::string &name,
 void AtlasManager::loadImages(const StringVect &files,
                               std::vector<Image*> &images)
 {
+    const ResourceManager *const resman = ResourceManager::getInstance();
+
     for (StringVectCIter it = files.begin(), it_end = files.end();
           it != it_end; ++ it)
     {
         const std::string str = *it;
+        if (resman->isInCache(str))
+        {
+            logger->log("Resource %s already in cache", str.c_str());
+            continue;
+        }
+
         SDL_RWops *rw = PHYSFSRWOPS_openRead(str.c_str());
         Image *image = sdlImageHelper->load(rw);
         if (image)
diff --git a/src/resources/mapdb.cpp b/src/resources/mapdb.cpp
index 2b2beed89..84b5f6cf3 100644
--- a/src/resources/mapdb.cpp
+++ b/src/resources/mapdb.cpp
@@ -121,8 +121,12 @@ void MapDB::readAtlas(XmlNodePtr node)
 void MapDB::loadInfo()
 {
     XML::Document *doc = new XML::Document("maps.xml");
-
     const XmlNodePtr root = doc->rootNode();
+    if (!root)
+    {
+        delete doc;
+        return;
+    }
 
     for_each_xml_child_node(node, root)
     {
diff --git a/src/resources/mapreader.cpp b/src/resources/mapreader.cpp
index f81741227..ede630d0c 100644
--- a/src/resources/mapreader.cpp
+++ b/src/resources/mapreader.cpp
@@ -279,8 +279,11 @@ Map *MapReader::readMap(XmlNodePtr node, const std::string &path)
     if (graphicsManager.getUseAtlases())
     {
         const MapDB::MapInfo *const info = MapDB::getMapAtlas(fileName);
-        map->setAtlas(ResourceManager::getInstance()->getAtlas(
-            info->atlas, *info->files));
+        if (info)
+        {
+            map->setAtlas(ResourceManager::getInstance()->getAtlas(
+                info->atlas, *info->files));
+        }
     }
 #endif
 
diff --git a/src/resources/resourcemanager.cpp b/src/resources/resourcemanager.cpp
index 5270e6f60..9beba49e7 100644
--- a/src/resources/resourcemanager.cpp
+++ b/src/resources/resourcemanager.cpp
@@ -399,6 +399,12 @@ Resource *ResourceManager::getFromCache(const std::string &filename,
     return getFromCache(ss.str());
 }
 
+bool ResourceManager::isInCache(const std::string &idPath) const
+{
+    const ResourceCIterator &resIter = mResources.find(idPath);
+    return (resIter != mResources.end() && resIter->second);
+}
+
 Resource *ResourceManager::getFromCache(const std::string &idPath)
 {
     // Check if the id exists, and return the value if it does.
diff --git a/src/resources/resourcemanager.h b/src/resources/resourcemanager.h
index 551b00a33..6c089a243 100644
--- a/src/resources/resourcemanager.h
+++ b/src/resources/resourcemanager.h
@@ -285,6 +285,7 @@ class ResourceManager final
 
         typedef std::map<std::string, Resource*> Resources;
         typedef Resources::iterator ResourceIterator;
+        typedef Resources::const_iterator ResourceCIterator;
 
 #ifdef DEBUG_DUMP_LEAKS
         Resources* getResources()
@@ -296,6 +297,8 @@ class ResourceManager final
 
         bool cleanOrphans(const bool always = false);
 
+        bool isInCache(const std::string &idPath) const;
+
         static void addDelayedAnimation(AnimationDelayLoad *const animation)
         { mDelayedAnimations.push_back(animation); }
 
-- 
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