add iOS support

engine/asset.cpp

@@ -2,14 +2,19 @@
 #include "log.h"
 #include "asset.h"
 
+#ifdef __IOS__
+#include <Foundation/Foundation.h>
+#endif
+
 #ifdef __ANDROID__
 AAssetManager* Asset::m_am;
 #endif
 
 bool Asset::open(const char* path)
 {
-    //LOG("Asset::open %s", path);
+    LOG("Asset::open %s", path);
     m_current_path = path;
+    std::string file_path = path;
 #ifdef __ANDROID__
     if (!(m_asset = AAssetManager_open(m_am, path, AASSET_MODE_RANDOM)))
     {
@@ -19,8 +24,16 @@ bool Asset::open(const char* path)
     m_len = (int)AAsset_getLength(m_asset);
     m_data = (uint8_t*)AAsset_getBuffer(m_asset);
 #else
-    if (!(m_fp = fopen(path, "rb")))
+#ifdef __IOS__
+    NSString* bundle_path = [[NSBundle mainBundle] bundlePath];
+    std::string base = [bundle_path cStringUsingEncoding:1];
+    file_path = base + "/" + path;
+#endif
+    if (!(m_fp = fopen(file_path.c_str(), "rb")))
+    {
+        LOG("errno = %d", errno);
         return false;
+    }
     fseek(m_fp, 0, SEEK_END);
     m_len = (int)ftell(m_fp);
     fseek(m_fp, 0, SEEK_SET);