iOS: Store most things in documents instead of application support folder for greater visibility to the user, and store all cached textures inside Application Storage/Cache folder instead so that iOS doesn't back them up and will remove them when running low on disk space if required

See https://developer.apple.com/library/archive/documentation/FileManagement/Conceptual/FileSystemProgrammingGuide/FileSystemOverview/FileSystemOverview.html for more details

src/Platform_Posix.c

@@ -143,9 +143,13 @@ cc_uint64 Stopwatch_Measure(void) {
 /*########################################################################################################################*
 *-----------------------------------------------------Directory/File------------------------------------------------------*
 *#########################################################################################################################*/
+#if defined CC_BUILD_IOS
+/* implemented in interop_ios.m */
+#else
 void Directory_GetCachePath(cc_string* path, const char* folder) {
 	String_AppendConst(path, folder);
 }
+#endif
 
 cc_result Directory_Create(const cc_string* path) {
 	char str[NATIVE_STR_LEN];

src/interop_ios.m

@@ -709,7 +709,7 @@ int Platform_GetCommandLineArgs(int argc, STRING_REF char** argv, cc_string* arg
 
 cc_result Platform_SetDefaultCurrentDirectory(int argc, char **argv) {
     // https://developer.apple.com/library/archive/documentation/FileManagement/Conceptual/FileSystemProgrammingGuide/FileSystemOverview/FileSystemOverview.html
-    NSArray* array = NSSearchPathForDirectoriesInDomains(NSApplicationSupportDirectory, NSUserDomainMask, YES);
+    NSArray* array = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
     if (array.count <= 0) return ERR_NOT_SUPPORTED;
     
     NSString* str    = [array objectAtIndex:0];
@@ -743,6 +743,22 @@ void GetDeviceUUID(cc_string* str) {
     String_AppendUtf8(str, src, String_Length(src));
 }
 
+void Directory_GetCachePath(cc_string* path, const char* folder) {
+    NSArray* array = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES);
+    if (array.count > 0) {
+        // try to use iOS app cache folder if possible
+        // https://developer.apple.com/library/archive/documentation/FileManagement/Conceptual/FileSystemProgrammingGuide/FileSystemOverview/FileSystemOverview.html
+        NSString* str    = [array objectAtIndex:0];
+        const char* utf8 = [str UTF8String];
+        
+        String_AppendUtf8(path, utf8, String_Length(utf8));
+        String_Format1(path, "/%c", folder);
+        Directory_Create(path);
+    } else {
+        String_AppendConst(path, folder);
+    }
+}
+
 
 /*########################################################################################################################*
  *-----------------------------------------------------Font handling-------------------------------------------------------*