Scene loading/saving improvements, transform gizmo, entity creation

core/entity.jai

@@ -1,6 +1,6 @@
 Entity_Id :: #type, isa s64;
 
-Entity_Flags :: enum_flags u8 {
+Entity_Flags :: enum_flags u16 {
     NONE;
     RENDERABLE;
     COLLISION;
@@ -10,6 +10,9 @@ Entity_Flags :: enum_flags u8 {
 
     ANIMATED;
 
+    SNAP_TO_GRID;
+    UNIFORM_SCALE;
+
     DONT_SAVE;
 }
 
@@ -66,6 +69,7 @@ Entity :: struct {
     transform: Transform;
 
     snap_offset: Vector3;
+    snap_intervals: Vector3;
 
     renderable: Renderable; @DontSerialize
     animator: Animator; @DontSerialize
@@ -182,9 +186,8 @@ destroy_entity :: (e: *Entity, remove_from_scene: bool = true) {
     }
 
     if remove_from_scene {
-        array_unordered_remove_by_value(*game_state.engine.current_scene.entities, e);
-        if e.type == {
-            case Block; bucket_array_remove(*game_state.engine.current_scene.by_type._Block, e._locator);
-        }
+        array_unordered_remove_by_value(*engine.current_scene.entities, e);
+
+        delete_entity(e);
     }
 }

core/scene.jai

@@ -1,7 +1,9 @@
 #load "../renderer/directional_light.jai";
 #load "particles.jai";
 
+#placeholder init_scene;
 #placeholder Entity_Storage;
+#placeholder delete_entity;
 #placeholder serialize_entity;
 #placeholder deserialize_entity;
 
@@ -26,7 +28,7 @@ Scene :: struct {
 }
 
 Entity_File_Info :: struct {
-    id: s64;
+    id: Entity_Id;
     full_path: string;
 }
 
@@ -38,28 +40,40 @@ visitor :: (info : *File_Visit_Info, files: *[..] Entity_File_Info) {
     // Entity text files
     if ext == "ent" && basename != "cam" {
         file_info : Entity_File_Info;
-        file_info.id = cast(s32)string_to_int(basename);
+        file_info.id = cast(Entity_Id)string_to_int(basename);
         file_info.full_path = copy_temporary_string(info.full_name);
         array_add(files, file_info);
     }
 }
 
-load_scene :: (path: string) -> *Scene {
-    split_path := split(path, "/");
-    name := split_path[split_path.count-1];
+load_scene :: (name: string) -> *Scene {
     scene := create_scene(name, 1024);
+    path := tprint("../assets/scenes/%", name);
 
     files : [..] Entity_File_Info;
     files.allocator = temp;
     visit_files(path, true, *files, visitor);
 
     for file: files {
-        deserialize_entity(scene, file.full_path);
+        deserialize_entity(scene, file.id, file.full_path);
+    }
+
+
+    calculate_aabbs(scene);
+    make_sure_nothing_collides(scene);
+
+    if engine.procs.on_scene_loaded != null {
+        engine.procs.on_scene_loaded(scene, engine.mode);
     }
 
     return scene;
 }
 
+save_scene :: (scene: *Scene) {
+    path := "../assets/scenes/";
+    save_scene(scene, path);
+}
+
 save_scene :: (scene: *Scene, path: string) {
     builder : String_Builder;
     builder.allocator = temp;
@@ -85,10 +99,17 @@ unload_scene :: (scene: *Scene) {
         destroy_entity(e, false);
     }
 
+    free(scene.name);
     fini(*scene.pool);
     free(scene);
 }
 
+reload_scene :: (scene: *Scene) {
+    name := copy_temporary_string(scene.name);
+    unload_scene(engine.current_scene);
+    engine.current_scene = load_scene(name);
+}
+
 create_scene :: (name: string = "", max_entities: s64 = 256) -> *Scene {
     scene := New(Scene);
     new_name := name;
@@ -112,6 +133,8 @@ create_scene :: (name: string = "", max_entities: s64 = 256) -> *Scene {
     scene.allocator.data = *scene.pool;
     scene.allocator.proc = flat_pool_allocator_proc;
 
+    init_scene(scene);
+
     // Assign allocator to everything that needs allocations
     scene.entities.allocator = scene.allocator;
     scene.particle_systems.allocator = scene.allocator;
@@ -129,11 +152,15 @@ create_scene :: (name: string = "", max_entities: s64 = 256) -> *Scene {
     return scene;
 }
 
-register_entity :: (scene: *Scene, entity: *Entity) {
+register_entity :: (scene: *Scene, entity: *Entity, id: Entity_Id = -1) {
     entity.scene = scene;
-    entity.id = next_entity_id;
+    if id != -1 {
+        entity.id = id;
+    } else {
+        entity.id = next_entity_id;
+        next_entity_id += 1;
+    }
     array_add(*scene.entities, entity);
-    next_entity_id += 1;
 
 #if NETWORKING {
     if net_data.net_mode == {