Flyweight_BigResourceManager.c

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#include <stdlib.h>
 
#include "Flyweight_BigResourceManager.h"
 
typedef struct
{
    BigResource** resources; 
    size_t resources_count;  
} BigResourceList;
 
//=============================================================================
//=============================================================================
 
static BigResourceList _resources = { 0 };
 
//=============================================================================
//=============================================================================
 
static void BigResourceList_Clear(BigResourceList* resourceList)
{
    if (resourceList != NULL && resourceList->resources != NULL && resourceList->resources_count != 0)
    {
        for (size_t index = 0; index < resourceList->resources_count; index++)
        {
            BigResource_Clear(resourceList->resources[index]);
        }
        free(resourceList->resources);
        resourceList->resources = NULL;
        resourceList->resources_count = 0;
    }
}
 
static int BigResourceList_AddResource(BigResourceList* resourceList, BigResource* resource)
{
    int resourceIndex = -1;
    BigResource** new_list = NULL;
 
    if (resourceList != NULL && resource != NULL)
    {
        if (resourceList->resources == NULL)
        {
            new_list = malloc(sizeof(BigResource*));
        }
        else
        {
            size_t newSize = (resourceList->resources_count + 1) * sizeof(BigResource*);
            new_list = realloc(resourceList->resources, newSize);
        }
 
        if (new_list != NULL)
        {
            resourceIndex = (int)resourceList->resources_count;
            resourceList->resources = new_list;
            resourceList->resources[resourceIndex] = resource;
            resourceList->resources_count++;
        }
    }
    return resourceIndex;
}
 
 
//=============================================================================
//=============================================================================
 
 
// BigResourceManager_Clear()
void BigResourceManager_Clear(void)
{
    BigResourceList_Clear(&_resources);
}
 
 
// BigResourceManager_AddResource()
int BigResourceManager_AddResource(BigResource* rawResource)
{
    int handle = -1;
    if (rawResource != NULL)
    {
        handle = (int)BigResourceList_AddResource(&_resources, rawResource);
    }
    return handle;
}
 
// BigResourceManager_GetResource()
BigResource* BigResourceManager_GetResource(int bigResourceId)
{
    BigResource* resource = NULL;
 
    if (bigResourceId >= 0 && (size_t)bigResourceId < _resources.resources_count)
    {
        resource = _resources.resources[bigResourceId];
    }
 
    return resource;
}