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#include "asset-manager.hpp"
TypeSafeInt_B(AssetHandle);
const uint64_t maxAssetItemsPerBucket = 256;
struct AssetBucket {
Asset assets[maxAssetItemsPerBucket];
};
BucketContainer<AssetBucket, AssetHandle_T> Asset_BucketContainer{};
void AM_Init() {
Buckets_Init(Asset_BucketContainer);
}
AssetHandle AM_Register_Inner(const void *src, void *dst, int64_t size, const char *key) {
AssetHandle_T assetHandle_T{Buckets_NewHandle<AssetBucket>(maxAssetItemsPerBucket, Asset_BucketContainer)};
if (src != nullptr) {
std::memcpy(dst, src, size);
}
auto b = Buckets_GetBucketIndex(assetHandle_T);
auto e = Buckets_GetItemIndex(assetHandle_T);
Asset *asset = &Asset_BucketContainer.buckets[b].assets[e];
asset->ptr = dst;
asset->size = size;
int64_t keyLen = std::strlen(key);
std::memcpy(asset->key, key, keyLen > 16 ? 16 : keyLen);
return AssetHandle{assetHandle_T};
}
AssetHandle AM_Register(const void *data, int64_t size, const char *key) {
assert(data != nullptr && "Attempt to register invalid asset data");
assert(data != CAFE_BABE(void) && "Attempt to register invalid asset data");
assert(size != 0 && "Attempt to register asset data of size 0");
void *target = Pke_New(size);
return AM_Register_Inner(data, target, size, key);
}
AssetHandle AM_Register(const char *path) {
std::ifstream file(path, std::ios::ate | std::ios::binary);
if (!file.is_open()) {
throw "failed to open file";
}
auto fileSize = (int64_t)file.tellg();
void *target = Pke_New(fileSize);
int64_t pathLen = strlen(path);
auto assetHandle = AM_Register_Inner(nullptr, target, 0, path + (pathLen > 16 ? pathLen - 16 : 0));
auto b = Buckets_GetBucketIndex(static_cast<AssetHandle_T>(assetHandle));
auto e = Buckets_GetItemIndex(static_cast<AssetHandle_T>(assetHandle));
Asset *asset = &Asset_BucketContainer.buckets[b].assets[e];
file.seekg(0);
file.read(static_cast<char *>(asset->ptr), fileSize);
file.close();
asset->size = fileSize;
return assetHandle;
}
void AM_Destroy(AssetHandle assetHandle) {
AssetHandle_T assetHandle_T = static_cast<AssetHandle_T>(assetHandle);
auto b = Buckets_GetBucketIndex(assetHandle_T);
auto i = Buckets_GetItemIndex(assetHandle_T);
Asset *asset = &Asset_BucketContainer.buckets[b].assets[i];
Pke_Delete(asset->ptr, asset->size);
memset(asset->key, '\0', 16);
asset->size = 0;
asset->ptr = CAFE_BABE(void);
auto lastGivenIndex = Asset_BucketContainer.itemCounter - (1ULL << 32);
if (i == lastGivenIndex) {
Asset_BucketContainer.itemCounter = lastGivenIndex;
}
}
const Asset *AM_Get(AssetHandle assetHandle) {
AssetHandle_T assetHandle_T = static_cast<AssetHandle_T>(assetHandle);
auto b = Buckets_GetBucketIndex(assetHandle_T);
auto i = Buckets_GetItemIndex(assetHandle_T);
return &Asset_BucketContainer.buckets[b].assets[i];
}
void AM_DebugPrint() {
printf("Asset Manager printout:\n");
for (uint64_t b = 0; b <= Asset_BucketContainer.bucketCounter; ++b) {
auto &bkt = Asset_BucketContainer.buckets[b];
long counter = b == Asset_BucketContainer.bucketCounter ? Asset_BucketContainer.itemCounter >> 32 : maxAssetItemsPerBucket;
for (uint64_t i = 0; i < counter; ++i) {
auto &asset = bkt.assets[i];
if (asset.size == 0)
continue;
printf("-Asset: 0x%016lX\n", b + (i << 32));
printf("\tkey: %s\n", asset.key);
printf("\tsize: %ld\n", asset.size);
printf("\tptr %p\n", asset.ptr);
}
}
}
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