Implemented Asset foundation

Signed-off-by: Robear Selwans <robear.selwans@outlook.com>

meson.build

@@ -7,8 +7,13 @@ dst = meson.current_source_dir() + '/import/'
 run_command( 'python3', meson.source_root() + '/subprojects/evol/buildscripts/copy.py', src, dst)
 subdir('import')
 
+subproject('evmod_ecs')
+
 mod_src = [
   'src/mod.c',
+
+  # Loaders
+  'src/loaders/TextLoader/TextLoader.c',
 ]
 
 mod_incdir = [
@@ -17,6 +22,9 @@ mod_incdir = [
 
 mod_deps = [
   evmod_deps,
+
+  dependency('assetsys'),
+  dependency('evmod_ecs'),
 ]
 
 module = shared_module(

meta/evmod.configvars

@@ -0,0 +1 @@
+EV_CONFIG_VAR(resource_directory, STRING, ".")

meta/evmod.namespaces

@@ -0,0 +1,18 @@
+EV_NS_DEF_BEGIN(Asset)
+EV_NS_DEF_FN(AssetHandle, load, (CONST_STR, path))
+EV_NS_DEF_FN(AssetHandle, cloneHandle, (AssetHandle, handle))
+EV_NS_DEF_FN(void, free, (AssetHandle, handle))
+EV_NS_DEF_END(Asset)
+
+
+EV_NS_DEF_BEGIN(AssetManager)
+EV_NS_DEF_FN(void, mount, (CONST_STR, path), (CONST_STR, as))
+EV_NS_DEF_END(AssetManager)
+
+/* #include LOADERS_NAMESPACES_H */
+
+EV_NS_DEF_BEGIN(TextLoader)
+
+EV_NS_DEF_FN(TextAsset, loadAsset, (AssetHandle, handle))
+
+EV_NS_DEF_END(TextLoader)

meta/evmod.types

@@ -0,0 +1,8 @@
+TYPE(AssetHandle, GenericHandle)
+
+/* #include LOADERS_TYPES_H */
+
+TYPE(TextAsset, struct {
+  CONST_STR text;
+  U64 length;
+})

module.lua

@@ -1,6 +1,6 @@
 { 
-  name = "Template",
+  name = "asset-manager",
   version = "0.1",
-  categories = {"Category1", "Category2"},
-  dependencies = {"Dependency1", "Dependency2"}
+  categories = {"assetmanager"},
+  dependencies = {"ecs"}
 }

src/loaders/LoaderCommon.h

@@ -0,0 +1,16 @@
+#pragma once
+
+#include <evol/common/ev_types.h>
+
+typedef struct {
+  PTR data;
+  I64 size;
+
+  U32 ref_count;
+  U32 ticks_left;
+} Asset;
+
+
+const Asset *
+ev_asset_getfromhandle(
+    AssetHandle handle);

src/loaders/TextLoader/TextLoader.c

@@ -0,0 +1,16 @@
+#define TYPE_MODULE evmod_assets
+#include <evol/meta/type_import.h>
+
+#include "../LoaderCommon.h"
+#include "TextLoader.h"
+
+TextAsset
+ev_textloader_loadasset(
+    AssetHandle handle)
+{
+  const Asset *asset = ev_asset_getfromhandle(handle);
+  return (TextAsset) {
+    .text = asset->data,
+    .length = asset->size
+  };
+}

src/loaders/TextLoader/TextLoader.h

@@ -0,0 +1,5 @@
+#pragma once
+
+TextAsset
+ev_textloader_loadasset(
+    AssetHandle handle);

src/mod.c

@@ -1,14 +1,138 @@
 #define EV_MODULE_DEFINE
 #include <evol/evolmod.h>
+#include <assetsys/assetsys.h>
+#include <evol/utils/aligned_alloc.h>
+
+#define IMPORT_MODULE evmod_ecs
+#include <evol/meta/module_import.h>
+
+#include "loaders/LoaderCommon.h"
+#include "loaders/TextLoader/TextLoader.h"
+
+#define AssetSysCheck(...) do { \
+  assetsys_error_t res = __VA_ARGS__; \
+  if(res != ASSETSYS_SUCCESS) { \
+    ev_log_error("`%s` failed. Error Message: %s", EV_STRINGIZE(__VA_ARGS__), assetsys_error_strings[res]); \
+  } \
+} while (0)
+
+struct {
+  assetsys_t *sys;
+
+  evolmodule_t ecs_mod;
+  ECSAssetWorldHandle world;
+  AssetComponentID assetcomponent_id;
+
+} AssetManagerData = {NULL};
+
+void
+onRemoveAssetComponent(
+    ECSQuery query)
+{
+  Asset *asset = ECS->getQueryColumn(query, sizeof(Asset), 1);
+  aligned_free(asset->data);
+}
 
 EV_CONSTRUCTOR
 {
+  static_assert(sizeof(AssetEntityID) == sizeof(AssetHandle), "AssetEntityID not the same size of AssetHandle");
+
+  AssetManagerData.sys = assetsys_create( 0 );
+
+  AssetManagerData.ecs_mod = evol_loadmodule("ecs");
+  if(AssetManagerData.ecs_mod) {
+    imports(AssetManagerData.ecs_mod, (ECS, AssetECS));
+    if(AssetECS) {
+      AssetManagerData.world = AssetECS->newWorld();
+
+      AssetManagerData.assetcomponent_id = AssetECS->registerComponent("Asset", sizeof(Asset), EV_ALIGNOF(Asset));
+      AssetECS->setOnRemoveTrigger("AssetComponentOnRemove", "Asset", onRemoveAssetComponent);
+    }
+  }
+
+  return AssetManagerData.sys == NULL;
 }
 
 EV_DESTRUCTOR
 {
+  assetsys_destroy(AssetManagerData.sys);
+
+  if(AssetManagerData.world) {
+    AssetECS->destroyWorld(AssetManagerData.world);
+  }
+  if(AssetManagerData.ecs_mod) {
+    evol_unloadmodule(AssetManagerData.ecs_mod);
+  }
+  return 0;
+}
+
+AssetHandle
+ev_asset_load(
+    CONST_STR path)
+{
+  assetsys_file_t file;
+  AssetSysCheck(assetsys_file(AssetManagerData.sys, path, &file));
+  Asset a;
+  a.size = (I64)assetsys_file_size(AssetManagerData.sys, file);
+  a.data = aligned_malloc(a.size + 1, 16);
+  int loaded_size = 0;
+  AssetSysCheck(assetsys_file_load(AssetManagerData.sys, file, &loaded_size, a.data, a.size));
+  a.size = (I64) loaded_size;
+  ((char*)a.data)[a.size] = '\0';
+
+  a.ref_count = 1;
+
+  AssetEntityID entt = AssetECS->createEntity(AssetManagerData.world);
+  AssetECS->setComponent(AssetManagerData.world, entt, AssetManagerData.assetcomponent_id, &a);
+
+  return (AssetHandle)entt;
+}
+
+AssetHandle
+ev_asset_clonehandle(
+    AssetHandle handle)
+{
+  Asset *asset = AssetECS->getComponent(AssetManagerData.world, handle, AssetManagerData.assetcomponent_id);
+  asset->ref_count++;
+
+  return handle;
+}
+
+void
+ev_asset_free(
+    AssetHandle handle)
+{
+  Asset *asset = AssetECS->getComponent(AssetManagerData.world, handle, AssetManagerData.assetcomponent_id);
+  asset->ref_count--;
+  if(asset->ref_count == 0) {
+    AssetECS->destroyEntity(AssetManagerData.world, handle);
+  }
+}
+
+void
+ev_assetmanager_mount(
+  CONST_STR path,
+  CONST_STR as)
+{
+  AssetSysCheck(assetsys_mount(AssetManagerData.sys, path, as));
+}
+
+const Asset *
+ev_asset_getfromhandle(
+    AssetHandle handle)
+{
+  return AssetECS->getComponent(AssetManagerData.world, handle, AssetManagerData.assetcomponent_id);
 }
 
 EV_BINDINGS
 {
+  EV_NS_BIND_FN(AssetManager, mount, ev_assetmanager_mount);
+
+  EV_NS_BIND_FN(Asset, load, ev_asset_load);
+  EV_NS_BIND_FN(Asset, cloneHandle, ev_asset_clonehandle);
+  EV_NS_BIND_FN(Asset, free, ev_asset_free);
+
+  EV_NS_BIND_FN(TextLoader, loadAsset, ev_textloader_loadasset);
+
+  return 0;
 }

subprojects/assetsys.wrap

@@ -0,0 +1,10 @@
+[wrap-git]
+directory = assetsys
+url = https://github.com/evol3d/libs
+revision = main
+depth = 1
+
+patch_directory = assetsys
+
+[provide]
+dependency_names = assetsys

subprojects/evmod_ecs.wrap

@@ -0,0 +1,7 @@
+[wrap-git]
+directory = evmod_ecs
+url = https://github.com/evol3D/evol-mod-flecs.git
+revision = master
+
+[provide]
+dependency_names = evmod_ecs

subprojects/packagefiles/assetsys/assetsys.c

@@ -0,0 +1,3 @@
+#define ASSETSYS_IMPLEMENTATION
+#define STRPOOL_IMPLEMENTATION
+#include <assetsys.h>

subprojects/packagefiles/assetsys/meson.build

@@ -0,0 +1,16 @@
+project('assetsys', 'c',
+  default_options: [
+    'default_library=static',
+  ],
+)
+
+assetsys_include = include_directories('.')
+
+# All other targets should follow the same template
+assetsys_src = files('assetsys.c')
+assetsys_lib = library('assetsys', assetsys_src, include_directories: assetsys_include)
+assetsys_dep = declare_dependency(link_with: assetsys_lib, include_directories: assetsys_include)
+
+if meson.version().version_compare('>= 0.54.0')
+  meson.override_dependency('assetsys', assetsys_dep)
+endif