Añadidas las librerias asset y screen

source/asset.cpp

@@ -0,0 +1,118 @@
+#include "asset.h"
+
+// Constructor
+Asset::Asset(std::string path)
+{
+    mExecutablePath = path;
+}
+
+// Destructor
+Asset::~Asset()
+{
+}
+
+// Añade un elemento a la lista
+void Asset::add(std::string file, enum assetType type, bool required)
+{
+    item_t temp;
+    temp.file = mExecutablePath + "/.." + file;
+    temp.type = type;
+    temp.required = required;
+    mFileList.push_back(temp);
+}
+
+// Devuelve el fichero de un elemento de la lista a partir de una cadena
+std::string Asset::get(std::string text)
+{
+    for (int i = 0; i < mFileList.size(); i++)
+        if (mFileList[i].file.find(text) != std::string::npos)
+            return mFileList[i].file;
+
+    printf("Warning: file %s not found\n", text.c_str());
+    return "";
+}
+
+// Comprueba que existen todos los elementos
+bool Asset::check()
+{
+    bool success = true;
+
+    // Comprueba la lista de ficheros clasificandolos por tipo
+    for (int type = 0; type < maxAssetType; type++)
+    {
+        printf("\n>> %s FILES\n", getTypeName(type).c_str());
+
+        for (int i = 0; i < mFileList.size(); i++)
+            if ((mFileList[i].required) && (mFileList[i].type == type))
+                success &= checkFile(mFileList[i].file);
+    }
+
+    // Resultado
+    if (success)
+        printf("\n** All files OK.\n\n");
+    else
+        printf("\n** A file is missing. Exiting.\n\n");
+
+    return success;
+}
+
+// Comprueba que existe un fichero
+bool Asset::checkFile(std::string path)
+{
+    bool success = true;
+
+    // Comprueba si existe el fichero
+    const std::string filename = path.substr(path.find_last_of("\\/") + 1);
+    SDL_RWops *file = SDL_RWFromFile(path.c_str(), "r+b");
+
+    if (file != NULL)
+    {
+        printf("Checking file %-20s [OK]\n", filename.c_str());
+        SDL_RWclose(file);
+    }
+    else
+    {
+        printf("Checking file %-20s [ERROR]\n", filename.c_str());
+        success = false;
+    }
+
+    return success;
+}
+
+// Devuelve el nombre del tipo de recurso
+std::string Asset::getTypeName(int type)
+{
+    switch (type)
+    {
+    case bitmap:
+        return "BITMAP";
+        break;
+    case music:
+        return "MUSIC";
+        break;
+    case sound:
+        return "SOUND";
+        break;
+    case font:
+        return "FONT";
+        break;
+    case lang:
+        return "LANG";
+        break;
+    case data:
+        return "DATA";
+        break;
+    case room:
+        return "ROOM";
+        break;
+    case enemy:
+        return "ENEMY";
+        break;
+    case item:
+        return "ITEM";
+        break;
+    default:
+        return "ERROR";
+        break;
+    }
+}