Content menu, content-pack dependencies

src/world/World.cpp

@@ -110,6 +110,14 @@ void World::setName(const std::string& name) {
     this->name = name;
 }
 
+bool World::hasPack(const std::string& id) const {
+    for (auto& pack : packs) {
+        if (pack.id == id)
+            return true;
+    }
+    return false;
+}
+
 void World::setSeed(uint64_t seed) {
     this->seed = seed;
 }

src/world/World.h

@@ -70,6 +70,7 @@ public:
     void setName(const std::string& name);
     void setSeed(uint64_t seed);
     
+    bool hasPack(const std::string& id) const;
     std::string getName() const;
     uint64_t getSeed() const;
     const std::vector<ContentPack>& getPacks() const;