WARNING: BREAKING: REMOVED: `*StorageValue()` functions

Those functions were platform dependent and user has no control over the file created. They have been removed from raylib and just moved to `core_storage_values` example.

1 files changed, 101 insertions, 0 deletions

diff --git a/examples/core/core_storage_values.c b/examples/core/core_storage_values.c
index 41173d26..03bd70f1 100644
--- a/examples/core/core_storage_values.c
+++ b/examples/core/core_storage_values.c
@@ -11,12 +11,20 @@
 
 #include "raylib.h"
 
+#include <stdlib.h>         // Required for: calloc(), free()
+
+#define STORAGE_DATA_FILE   "storage.data"   // Storage file
+
 // NOTE: Storage positions must start with 0, directly related to file memory layout
 typedef enum {
     STORAGE_POSITION_SCORE      = 0,
     STORAGE_POSITION_HISCORE    = 1
 } StorageData;
 
+// Persistent storage functions
+static bool SaveStorageValue(unsigned int position, int value);
+static int LoadStorageValue(unsigned int position);
+
 //------------------------------------------------------------------------------------
 // Program main entry point
 //------------------------------------------------------------------------------------
@@ -87,4 +95,97 @@ int main(void)
     //--------------------------------------------------------------------------------------
 
     return 0;
+}
+
+// Save integer value to storage file (to defined position)
+// NOTE: Storage positions is directly related to file memory layout (4 bytes each integer)
+bool SaveStorageValue(unsigned int position, int value)
+{
+    bool success = false;
+    unsigned int dataSize = 0;
+    unsigned int newDataSize = 0;
+    unsigned char *fileData = LoadFileData(STORAGE_DATA_FILE, &dataSize);
+    unsigned char *newFileData = NULL;
+
+    if (fileData != NULL)
+    {
+        if (dataSize <= (position*sizeof(int)))
+        {
+            // Increase data size up to position and store value
+            newDataSize = (position + 1)*sizeof(int);
+            newFileData = (unsigned char *)RL_REALLOC(fileData, newDataSize);
+
+            if (newFileData != NULL)
+            {
+                // RL_REALLOC succeded
+                int *dataPtr = (int *)newFileData;
+                dataPtr[position] = value;
+            }
+            else
+            {
+                // RL_REALLOC failed
+                TraceLog(LOG_WARNING, "FILEIO: [%s] Failed to realloc data (%u), position in bytes (%u) bigger than actual file size", STORAGE_DATA_FILE, dataSize, position*sizeof(int));
+
+                // We store the old size of the file
+                newFileData = fileData;
+                newDataSize = dataSize;
+            }
+        }
+        else
+        {
+            // Store the old size of the file
+            newFileData = fileData;
+            newDataSize = dataSize;
+
+            // Replace value on selected position
+            int *dataPtr = (int *)newFileData;
+            dataPtr[position] = value;
+        }
+
+        success = SaveFileData(STORAGE_DATA_FILE, newFileData, newDataSize);
+        RL_FREE(newFileData);
+
+        TraceLog(LOG_INFO, "FILEIO: [%s] Saved storage value: %i", STORAGE_DATA_FILE, value);
+    }
+    else
+    {
+        TraceLog(LOG_INFO, "FILEIO: [%s] File created successfully", STORAGE_DATA_FILE);
+
+        dataSize = (position + 1)*sizeof(int);
+        fileData = (unsigned char *)RL_MALLOC(dataSize);
+        int *dataPtr = (int *)fileData;
+        dataPtr[position] = value;
+
+        success = SaveFileData(STORAGE_DATA_FILE, fileData, dataSize);
+        UnloadFileData(fileData);
+
+        TraceLog(LOG_INFO, "FILEIO: [%s] Saved storage value: %i", STORAGE_DATA_FILE, value);
+    }
+
+    return success;
+}
+
+// Load integer value from storage file (from defined position)
+// NOTE: If requested position could not be found, value 0 is returned
+int LoadStorageValue(unsigned int position)
+{
+    int value = 0;
+    unsigned int dataSize = 0;
+    unsigned char *fileData = LoadFileData(STORAGE_DATA_FILE, &dataSize);
+
+    if (fileData != NULL)
+    {
+        if (dataSize < (position*4)) TraceLog(LOG_WARNING, "FILEIO: [%s] Failed to find storage position: %i", STORAGE_DATA_FILE, position);
+        else
+        {
+            int *dataPtr = (int *)fileData;
+            value = dataPtr[position];
+        }
+
+        UnloadFileData(fileData);
+
+        TraceLog(LOG_INFO, "FILEIO: [%s] Loaded storage value: %i", STORAGE_DATA_FILE, value);
+    }
+
+    return value;
 }
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