add walkmaps support.

Fast detecting between two targets is they in same walkable area.

4 files changed, 37 insertions, 1 deletions

diff --git a/src/resources/mapreader.cpp b/src/resources/mapreader.cpp
index 6a149c6fd..464680620 100644
--- a/src/resources/mapreader.cpp
+++ b/src/resources/mapreader.cpp
@@ -279,13 +279,15 @@ Map *MapReader::readMap(XmlNodePtr node, const std::string &path)
 
     const std::string fileName = path.substr(path.rfind("/") + 1);
     map->setProperty("shortName", fileName);
+    ResourceManager *const resman = ResourceManager::getInstance();
+
 #ifdef USE_OPENGL
     if (graphicsManager.getUseAtlases())
     {
         const MapDB::MapInfo *const info = MapDB::getMapAtlas(fileName);
         if (info)
         {
-            map->setAtlas(ResourceManager::getInstance()->getAtlas(
+            map->setAtlas(resman->getAtlas(
                 info->atlas, *info->files));
         }
     }
@@ -393,6 +395,7 @@ Map *MapReader::readMap(XmlNodePtr node, const std::string &path)
     map->clearIndexedTilesets();
     map->setActorsFix(0, atoi(map->getProperty("actorsfix").c_str()));
     map->reduce();
+    map->setWalkLayer(resman->getWalkLayer(fileName, map));
     return map;
 }
 
diff --git a/src/resources/mapreader.h b/src/resources/mapreader.h
index 26e47a74c..63805ac60 100644
--- a/src/resources/mapreader.h
+++ b/src/resources/mapreader.h
@@ -29,6 +29,7 @@
 
 class Map;
 class Properties;
+class Resource;
 class Tileset;
 
 /**
diff --git a/src/resources/resourcemanager.cpp b/src/resources/resourcemanager.cpp
index 9a4d1c3f1..43092e28d 100644
--- a/src/resources/resourcemanager.cpp
+++ b/src/resources/resourcemanager.cpp
@@ -26,6 +26,9 @@
 #include "client.h"
 #include "configuration.h"
 #include "logger.h"
+#include "map.h"
+#include "navigationmanager.h"
+#include "walklayer.h"
 
 #include "resources/atlasmanager.h"
 #include "resources/dye.h"
@@ -740,6 +743,31 @@ Resource *ResourceManager::getAtlas(const std::string &name,
 }
 #endif
 
+struct WalkLayerLoader
+{
+    const std::string name;
+    Map *map;
+
+    static Resource *load(const void *const v)
+    {
+        if (!v)
+            return nullptr;
+
+        const WalkLayerLoader *const rl = static_cast<const
+            WalkLayerLoader *const>(v);
+        Resource *const resource = NavigationManager::loadWalkLayer(rl->map);
+        return resource;
+    }
+};
+
+WalkLayer *ResourceManager::getWalkLayer(const std::string &name,
+                                        Map *const map)
+{
+    WalkLayerLoader rl = {name, map};
+    return static_cast<WalkLayer*>(get("map_" + name,
+        WalkLayerLoader::load, &rl));
+}
+
 struct SpriteDefLoader
 {
     std::string path;
diff --git a/src/resources/resourcemanager.h b/src/resources/resourcemanager.h
index 0248aeda2..72efe8693 100644
--- a/src/resources/resourcemanager.h
+++ b/src/resources/resourcemanager.h
@@ -37,10 +37,12 @@
 class AnimationDelayLoad;
 class Image;
 class ImageSet;
+class Map;
 class SDLMusic;
 class Resource;
 class SoundEffect;
 class SpriteDef;
+class WalkLayer;
 
 struct SDL_Surface;
 struct SDL_RWops;
@@ -222,6 +224,8 @@ class ResourceManager final
                            const StringVect &files) A_WARN_UNUSED;
 #endif
 
+        WalkLayer *getWalkLayer(const std::string &name, Map *const map);
+
         /**
          * Creates a sprite definition based on a given path and the supplied
          * variant.