Use documents directory as game data folder

CMakeLists.txt

@@ -271,6 +271,13 @@ target_sources(${EXECUTABLE_NAME} PUBLIC
     "src/sfall_config.h"
 )
 
+if(IOS)
+    target_sources(${EXECUTABLE_NAME} PUBLIC
+        "src/platform/ios/paths.h"
+        "src/platform/ios/paths.mm"
+    )
+endif()
+
 if(WIN32)
     target_compile_definitions(${EXECUTABLE_NAME} PUBLIC
         _CRT_SECURE_NO_WARNINGS

src/platform/ios/paths.h

@@ -0,0 +1,6 @@
+#ifndef FALLOUT_PLATFORM_IOS_PATHS_H_
+#define FALLOUT_PLATFORM_IOS_PATHS_H_
+
+const char* iOSGetDocumentsPath();
+
+#endif /* FALLOUT_PLATFORM_IOS_PATHS_H_ */

src/platform/ios/paths.mm

@@ -0,0 +1,33 @@
+#include "paths.h"
+
+#include <Foundation/Foundation.h>
+
+#include <SDL.h>
+
+// Modelled after SDL_AndroidGetExternalStoragePath.
+const char* iOSGetDocumentsPath()
+{
+    static char* s_iOSDocumentsPath = NULL;
+
+    if (s_iOSDocumentsPath == NULL) {
+        @autoreleasepool {
+            NSArray* array = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
+
+            if ([array count] > 0) {
+                NSString* str = [array objectAtIndex:0];
+                const char* base = [str fileSystemRepresentation];
+                if (base) {
+                    const size_t len = SDL_strlen(base) + 2;
+                    s_iOSDocumentsPath = (char*)SDL_malloc(len);
+                    if (s_iOSDocumentsPath == NULL) {
+                        SDL_OutOfMemory();
+                    } else {
+                        SDL_snprintf(s_iOSDocumentsPath, len, "%s/", base);
+                    }
+                }
+            }
+        }
+    }
+
+    return s_iOSDocumentsPath;
+}

src/win32.cc

@@ -8,6 +8,10 @@
 #include "svga.h"
 #include "window_manager.h"
 
+#if __APPLE__ && TARGET_OS_IOS
+#include "platform/ios/paths.h"
+#endif
+
 namespace fallout {
 
 #ifdef _WIN32
@@ -39,6 +43,7 @@ int main(int argc, char* argv[])
 #if __APPLE__ && TARGET_OS_IOS
     SDL_SetHint(SDL_HINT_MOUSE_TOUCH_EVENTS, "0");
     SDL_SetHint(SDL_HINT_TOUCH_MOUSE_EVENTS, "0");
+    chdir(iOSGetDocumentsPath());
 #endif
 
 #if __APPLE__ && TARGET_OS_OSX