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WARNING: BREAKING: REMOVED: *StorageValue() functions

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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.
This commit is contained in:
Ray 2022-07-05 13:24:14 +02:00
parent e0f0a5f663
commit e722a8dbef
6 changed files with 101 additions and 121 deletions
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101
examples/core/core_storage_values.c
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@ -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;
}