crates/bevy_gltf_blueprints/src/animation.rs

@@ -3,7 +3,7 @@ use bevy::utils::HashMap;
 
 #[derive(Component, Reflect, Default, Debug)]
 #[reflect(Component)]
-/// storage for animations for a given entity's BLUEPRINT (ie for example a characters animations), essentially a clone of gltf's `named_animations`
+/// storage for animations for a given entity (hierarchy), essentially a clone of gltf's `named_animations`
 pub struct BlueprintAnimations {
     pub named_animations: HashMap<String, Handle<AnimationClip>>,
 }
@@ -15,6 +15,13 @@ pub struct BlueprintAnimations {
 /// ie armature/root for animated models, which means more complex queries to trigger animations that we want to avoid
 pub struct BlueprintAnimationPlayerLink(pub Entity);
 
+#[derive(Component, Reflect, Default, Debug)]
+#[reflect(Component)]
+pub struct Animated{
+    pub animations: Vec<String> 
+}
+
+
 #[derive(Component, Reflect, Default, Debug)]
 #[reflect(Component)]
 /// storage for animations for a given entity (hierarchy), essentially a clone of gltf's `named_animations`
@@ -29,54 +36,12 @@ pub struct InstanceAnimations {
 /// ie armature/root for animated models, which means more complex queries to trigger animations that we want to avoid
 pub struct InstanceAnimationPlayerLink(pub Entity);
 
-/// Stores Animation information: name, frame informations etc
-#[derive(Reflect, Default, Debug)]
-pub struct AnimationInfo {
-    pub name: String,
-    pub frame_start: f32,
-    pub frame_end: f32,
-    pub frames_length: f32,
-    pub frame_start_override: f32,
-    pub frame_end_override: f32,
-}
 
-/// Stores information about animations, to make things a bit easier api wise:
-/// these components are automatically inserted by gltf_auto_export on entities that have animations
-#[derive(Component, Reflect, Default, Debug)]
-#[reflect(Component)]
-pub struct AnimationInfos {
-    pub animations: Vec<AnimationInfo>,
-}
-
-pub struct AnimationMarker {
-    pub frame: u32,
+pub struct AnimationMarker{
+    pub frame:u32,
     pub name: String,
 }
 
-/// Stores information about animation markers: practical for adding things like triggering events at specific keyframes etc
-/// it is essentiall a hashmap of AnimationName => HashMap<FrameNumber, Vec of marker names>
 #[derive(Component, Reflect, Default, Debug)]
 #[reflect(Component)]
-pub struct AnimationMarkers(pub HashMap<String, HashMap<u32, Vec<String>>>);
-
-// FIXME: ugh, ugly, there has to be a better way to do this ?
-#[derive(Component, Default, Debug)]
-pub struct AnimationMarkerTrackers(pub HashMap<String, HashMap<u32, Vec<AnimationMarkerTracker>>>);
-
-#[derive(Default, Debug)]
-pub struct AnimationMarkerTracker {
-    // pub frame:u32,
-    // pub name: String,
-    // pub processed_for_cycle: bool,
-    pub prev_frame: u32,
-}
-
-/// Event that gets triggered once a specific marker inside an animation has been reached (frame based)
-/// Provides some usefull information about which entity , wich animation, wich frame & which marker got triggered
-#[derive(Event, Debug)]
-pub struct AnimationMarkerReached {
-    pub entity: Entity,
-    pub animation_name: String,
-    pub frame: u32,
-    pub marker_name: String,
-}
+pub struct AnimationMarkers(pub HashMap<String, HashMap<u32, Vec<String> >>);

crates/bevy_gltf_blueprints/src/lib.rs

@@ -119,16 +119,17 @@ impl Plugin for BlueprintsPlugin {
         .register_type::<BlueprintName>()
         .register_type::<MaterialInfo>()
         .register_type::<SpawnHere>()
+
         .register_type::<BlueprintAnimations>()
         .register_type::<InstanceAnimations>()
-        .register_type::<AnimationInfo>()
-        .register_type::<AnimationInfos>()
-        .register_type::<Vec<AnimationInfo>>()
+        .register_type::<Animated>()
         .register_type::<AnimationMarkers>()
         .register_type::<HashMap<u32, Vec<String>>>()
-        .register_type::<HashMap<String, HashMap<u32, Vec<String>>>>()
-        .add_event::<AnimationMarkerReached>()
+        .register_type::<HashMap<String, HashMap<u32, Vec<String> >>>()
+
+
         .register_type::<BlueprintsList>()
+        .register_type::<Vec<String>>()
         .register_type::<HashMap<String, Vec<String>>>()
         .insert_resource(BluePrintsConfig {
             format: self.format,

crates/bevy_gltf_blueprints/src/spawn_from_blueprints.rs

@@ -2,7 +2,7 @@ use std::path::{Path, PathBuf};
 
 use bevy::{gltf::Gltf, prelude::*, utils::HashMap};
 
-use crate::{BluePrintsConfig, BlueprintAnimations};
+use crate::{BlueprintAnimations, BluePrintsConfig};
 
 /// this is a flag component for our levels/game world
 #[derive(Component)]
@@ -281,12 +281,11 @@ pub(crate) fn spawn_from_blueprints(
             },
             Spawned,
             OriginalChildren(original_children),
-            BlueprintAnimations {
-                // these are animations specific to the inside of the blueprint
+            BlueprintAnimations { // these are animations specific to the inside of the blueprint
                 named_animations: gltf.named_animations.clone(),
-            },
+            }
         ));
-
+   
         if add_to_world.is_some() {
             let world = game_world
                 .get_single_mut()

crates/bevy_gltf_blueprints/src/spawn_post_process.rs

@@ -85,9 +85,7 @@ pub(crate) fn spawned_blueprint_post_process(
                     // FIXME: stopgap solution: since we cannot use an AnimationPlayer at the root entity level
                     // and we cannot update animation clips so that the EntityPaths point to one level deeper,
                     // BUT we still want to have some marker/control at the root entity level, we add this
-                    commands
-                        .entity(original)
-                        .insert(BlueprintAnimationPlayerLink(added));
+                    commands.entity(original).insert(BlueprintAnimationPlayerLink(added));
                 }
             }
         }

testing/bevy_example/assets/registry.json

@@ -110,19 +110,6 @@
       "type": "array",
       "typeInfo": "List"
     },
-    "alloc::vec::Vec<bevy_gltf_blueprints::animation::AnimationInfo>": {
-      "isComponent": false,
-      "isResource": false,
-      "items": {
-        "type": {
-          "$ref": "#/$defs/bevy_gltf_blueprints::animation::AnimationInfo"
-        }
-      },
-      "short_name": "Vec<AnimationInfo>",
-      "title": "alloc::vec::Vec<bevy_gltf_blueprints::animation::AnimationInfo>",
-      "type": "array",
-      "typeInfo": "List"
-    },
     "alloc::vec::Vec<bevy_render::color::Color>": {
       "isComponent": false,
       "isResource": false,
@@ -2960,36 +2947,36 @@
       "type": "object",
       "typeInfo": "Struct"
     },
-    "bevy_example::game::animation::Marker1": {
+    "bevy_example::game::Marker1": {
       "additionalProperties": false,
       "isComponent": true,
       "isResource": false,
       "properties": {},
       "required": [],
       "short_name": "Marker1",
-      "title": "bevy_example::game::animation::Marker1",
+      "title": "bevy_example::game::Marker1",
       "type": "object",
       "typeInfo": "Struct"
     },
-    "bevy_example::game::animation::Marker2": {
+    "bevy_example::game::Marker2": {
       "additionalProperties": false,
       "isComponent": true,
       "isResource": false,
       "properties": {},
       "required": [],
       "short_name": "Marker2",
-      "title": "bevy_example::game::animation::Marker2",
+      "title": "bevy_example::game::Marker2",
       "type": "object",
       "typeInfo": "Struct"
     },
-    "bevy_example::game::animation::Marker3": {
+    "bevy_example::game::Marker3": {
       "additionalProperties": false,
       "isComponent": true,
       "isResource": false,
       "properties": {},
       "required": [],
       "short_name": "Marker3",
-      "title": "bevy_example::game::animation::Marker3",
+      "title": "bevy_example::game::Marker3",
       "type": "object",
       "typeInfo": "Struct"
     },
@@ -3562,90 +3549,25 @@
       "type": "object",
       "typeInfo": "Struct"
     },
-    "bevy_gltf_blueprints::animation::AnimationInfo": {
-      "additionalProperties": false,
-      "isComponent": false,
-      "isResource": false,
-      "properties": {
-        "frame_end": {
-          "type": {
-            "$ref": "#/$defs/f32"
-          }
-        },
-        "frame_end_override": {
-          "type": {
-            "$ref": "#/$defs/f32"
-          }
-        },
-        "frame_start": {
-          "type": {
-            "$ref": "#/$defs/f32"
-          }
-        },
-        "frame_start_override": {
-          "type": {
-            "$ref": "#/$defs/f32"
-          }
-        },
-        "frames_length": {
-          "type": {
-            "$ref": "#/$defs/f32"
-          }
-        },
-        "name": {
-          "type": {
-            "$ref": "#/$defs/alloc::string::String"
-          }
-        }
-      },
-      "required": [
-        "name",
-        "frame_start",
-        "frame_end",
-        "frames_length",
-        "frame_start_override",
-        "frame_end_override"
-      ],
-      "short_name": "AnimationInfo",
-      "title": "bevy_gltf_blueprints::animation::AnimationInfo",
-      "type": "object",
-      "typeInfo": "Struct"
-    },
-    "bevy_gltf_blueprints::animation::AnimationInfos": {
+    "bevy_gltf_blueprints::animation::Animated": {
       "additionalProperties": false,
       "isComponent": true,
       "isResource": false,
       "properties": {
         "animations": {
           "type": {
-            "$ref": "#/$defs/alloc::vec::Vec<bevy_gltf_blueprints::animation::AnimationInfo>"
+            "$ref": "#/$defs/alloc::vec::Vec<alloc::string::String>"
           }
         }
       },
       "required": [
         "animations"
       ],
-      "short_name": "AnimationInfos",
-      "title": "bevy_gltf_blueprints::animation::AnimationInfos",
+      "short_name": "Animated",
+      "title": "bevy_gltf_blueprints::animation::Animated",
       "type": "object",
       "typeInfo": "Struct"
     },
-    "bevy_gltf_blueprints::animation::AnimationMarkers": {
-      "isComponent": true,
-      "isResource": false,
-      "items": false,
-      "prefixItems": [
-        {
-          "type": {
-            "$ref": "#/$defs/bevy_utils::hashbrown::HashMap<alloc::string::String, bevy_utils::hashbrown::HashMap<u32, alloc::vec::Vec<alloc::string::String>, bevy_utils::hashbrown::hash_map::DefaultHashBuilder>, bevy_utils::hashbrown::hash_map::DefaultHashBuilder>"
-          }
-        }
-      ],
-      "short_name": "AnimationMarkers",
-      "title": "bevy_gltf_blueprints::animation::AnimationMarkers",
-      "type": "array",
-      "typeInfo": "TupleStruct"
-    },
     "bevy_gltf_blueprints::animation::BlueprintAnimations": {
       "additionalProperties": false,
       "isComponent": true,
@@ -11012,32 +10934,6 @@
       "type": "object",
       "typeInfo": "Map"
     },
-    "bevy_utils::hashbrown::HashMap<alloc::string::String, bevy_utils::hashbrown::HashMap<u32, alloc::vec::Vec<alloc::string::String>, bevy_utils::hashbrown::hash_map::DefaultHashBuilder>, bevy_utils::hashbrown::hash_map::DefaultHashBuilder>": {
-      "additionalProperties": {
-        "type": {
-          "$ref": "#/$defs/bevy_utils::hashbrown::HashMap<u32, alloc::vec::Vec<alloc::string::String>, bevy_utils::hashbrown::hash_map::DefaultHashBuilder>"
-        }
-      },
-      "isComponent": false,
-      "isResource": false,
-      "short_name": "HashMap<String, HashMap<u32, Vec<String>, DefaultHashBuilder>, DefaultHashBuilder>",
-      "title": "bevy_utils::hashbrown::HashMap<alloc::string::String, bevy_utils::hashbrown::HashMap<u32, alloc::vec::Vec<alloc::string::String>, bevy_utils::hashbrown::hash_map::DefaultHashBuilder>, bevy_utils::hashbrown::hash_map::DefaultHashBuilder>",
-      "type": "object",
-      "typeInfo": "Map"
-    },
-    "bevy_utils::hashbrown::HashMap<u32, alloc::vec::Vec<alloc::string::String>, bevy_utils::hashbrown::hash_map::DefaultHashBuilder>": {
-      "additionalProperties": {
-        "type": {
-          "$ref": "#/$defs/alloc::vec::Vec<alloc::string::String>"
-        }
-      },
-      "isComponent": false,
-      "isResource": false,
-      "short_name": "HashMap<u32, Vec<String>, DefaultHashBuilder>",
-      "title": "bevy_utils::hashbrown::HashMap<u32, alloc::vec::Vec<alloc::string::String>, bevy_utils::hashbrown::hash_map::DefaultHashBuilder>",
-      "type": "object",
-      "typeInfo": "Map"
-    },
     "bevy_utils::smallvec::SmallVec<[bevy_ecs::entity::Entity; 8]>": {
       "isComponent": false,
       "isResource": false,

testing/bevy_example/src/game/animation.rs

@@ -1,278 +0,0 @@
-use std::time::Duration;
-
-use bevy_gltf_blueprints::{
-    AnimationInfos, AnimationMarkerReached, AnimationMarkerTrackers, AnimationMarkers,
-    BlueprintAnimationPlayerLink, BlueprintAnimations, BlueprintName, BlueprintsList,
-    GltfBlueprintsSet, InstanceAnimationPlayerLink, InstanceAnimations,
-};
-
-use bevy::{gltf::Gltf, prelude::*};
-use bevy_gltf_worlflow_examples_common_rapier::{AppState, GameState};
-
-#[derive(Component, Reflect, Default, Debug)]
-#[reflect(Component)]
-/// flag component for testing
-pub struct Marker1;
-
-#[derive(Component, Reflect, Default, Debug)]
-#[reflect(Component)]
-/// flag component for testing
-pub struct Marker2;
-
-#[derive(Component, Reflect, Default, Debug)]
-#[reflect(Component)]
-/// flag component for testing
-pub struct Marker3;
-
-#[derive(Resource)]
-pub struct AnimTest(Handle<Gltf>);
-
-pub fn setup_main_scene_animations(asset_server: Res<AssetServer>, mut commands: Commands) {
-    commands.insert_resource(AnimTest(asset_server.load("models/World.glb")));
-}
-
-pub fn animations(
-    added_animation_players: Query<(Entity, &Name, &AnimationPlayer)>,
-    added_animation_infos: Query<(Entity, &Name, &AnimationInfos), (Added<AnimationInfos>)>,
-    animtest: Res<AnimTest>,
-    mut commands: Commands,
-    assets_gltf: Res<Assets<Gltf>>,
-    parents: Query<&Parent>,
-) {
-    for (entity, name, animation_infos) in added_animation_infos.iter() {
-        //println!("animated stuf {:?} on entity {}", animation_infos, name);
-        let gltf = assets_gltf.get(&animtest.0).unwrap();
-        let mut matching_data = true;
-        for animation_info in &animation_infos.animations {
-            if !gltf.named_animations.contains_key(&animation_info.name) {
-                matching_data = false;
-                break;
-            }
-        }
-        if matching_data {
-            println!(
-                "inserting Animations components into {} ({:?})",
-                name, entity
-            );
-            println!("Found match {:?}", gltf.named_animations);
-            commands.entity(entity).insert(InstanceAnimations {
-                named_animations: gltf.named_animations.clone(),
-            });
-            for ancestor in parents.iter_ancestors(entity) {
-                if added_animation_players.contains(ancestor) {
-                    // println!("found match with animationPlayer !! {:?}",names.get(ancestor));
-                    commands
-                        .entity(entity)
-                        .insert(InstanceAnimationPlayerLink(ancestor));
-                }
-                // info!("{:?} is an ancestor of {:?}", ancestor, player);
-            }
-        }
-        println!("");
-    }
-}
-
-pub fn play_animations(
-    animated_marker1: Query<
-        (&InstanceAnimationPlayerLink, &InstanceAnimations),
-        (With<AnimationInfos>, With<Marker1>),
-    >,
-    animated_marker2: Query<
-        (&InstanceAnimationPlayerLink, &InstanceAnimations),
-        (With<AnimationInfos>, With<Marker2>),
-    >,
-    animated_marker3: Query<
-        (
-            &InstanceAnimationPlayerLink,
-            &InstanceAnimations,
-            &BlueprintAnimationPlayerLink,
-            &BlueprintAnimations,
-        ),
-        (With<AnimationInfos>, With<Marker3>),
-    >,
-
-    mut animation_players: Query<&mut AnimationPlayer>,
-    keycode: Res<ButtonInput<KeyCode>>,
-) {
-    if keycode.just_pressed(KeyCode::KeyM) {
-        for (link, animations) in animated_marker1.iter() {
-            println!("animations {:?}", animations.named_animations);
-            let mut animation_player = animation_players.get_mut(link.0).unwrap();
-            let anim_name = "Blueprint1_move";
-            animation_player
-                .play_with_transition(
-                    animations
-                        .named_animations
-                        .get(anim_name)
-                        .expect("animation name should be in the list")
-                        .clone(),
-                    Duration::from_secs(5),
-                )
-                .repeat();
-        }
-    }
-    if keycode.just_pressed(KeyCode::KeyJ) {
-        for (link, animations) in animated_marker1.iter() {
-            println!("animations {:?}", animations.named_animations);
-            let mut animation_player = animation_players.get_mut(link.0).unwrap();
-            let anim_name = "Blueprint1_jump";
-            animation_player
-                .play_with_transition(
-                    animations
-                        .named_animations
-                        .get(anim_name)
-                        .expect("animation name should be in the list")
-                        .clone(),
-                    Duration::from_secs(5),
-                )
-                .repeat();
-        }
-    }
-
-    if keycode.just_pressed(KeyCode::KeyA) {
-        for (link, animations) in animated_marker2.iter() {
-            println!("animations {:?}", animations.named_animations);
-            let mut animation_player = animation_players.get_mut(link.0).unwrap();
-            let anim_name = "Blueprint1_move";
-            animation_player
-                .play_with_transition(
-                    animations
-                        .named_animations
-                        .get(anim_name)
-                        .expect("animation name should be in the list")
-                        .clone(),
-                    Duration::from_secs(5),
-                )
-                .repeat();
-        }
-    }
-    if keycode.just_pressed(KeyCode::KeyB) {
-        for (link, animations) in animated_marker2.iter() {
-            println!("animations {:?}", animations.named_animations);
-            let mut animation_player = animation_players.get_mut(link.0).unwrap();
-            let anim_name = "Blueprint1_jump";
-            animation_player
-                .play_with_transition(
-                    animations
-                        .named_animations
-                        .get(anim_name)
-                        .expect("animation name should be in the list")
-                        .clone(),
-                    Duration::from_secs(5),
-                )
-                .repeat();
-        }
-    }
-
-    // play instance animation
-    if keycode.just_pressed(KeyCode::KeyW) {
-        for (link, animations, _, _) in animated_marker3.iter() {
-            println!("animations {:?}", animations.named_animations);
-            let mut animation_player = animation_players.get_mut(link.0).unwrap();
-            let anim_name = "Blueprint8_move";
-            animation_player
-                .play_with_transition(
-                    animations
-                        .named_animations
-                        .get(anim_name)
-                        .expect("animation name should be in the list")
-                        .clone(),
-                    Duration::from_secs(5),
-                )
-                .repeat();
-        }
-    }
-    // play blueprint animation
-    if keycode.just_pressed(KeyCode::KeyX) {
-        for (_, _, link, animations) in animated_marker3.iter() {
-            println!("animations {:?}", animations.named_animations);
-            let mut animation_player = animation_players.get_mut(link.0).unwrap();
-            let anim_name = "Walk";
-            animation_player
-                .play_with_transition(
-                    animations
-                        .named_animations
-                        .get(anim_name)
-                        .expect("animation name should be in the list")
-                        .clone(),
-                    Duration::from_secs(5),
-                )
-                .repeat();
-        }
-    }
-}
-
-pub fn trigger_event_based_on_animation_marker(
-    animation_infos: Query<(
-        Entity,
-        &AnimationMarkers,
-        &InstanceAnimationPlayerLink,
-        &InstanceAnimations,
-        &AnimationInfos,
-    )>,
-    animation_players: Query<&AnimationPlayer>,
-    animation_clips: Res<Assets<AnimationClip>>,
-    mut animation_marker_events: EventWriter<AnimationMarkerReached>,
-) {
-    for (entity, markers, link, animations, animation_infos) in animation_infos.iter() {
-        let animation_player = animation_players.get(link.0).unwrap();
-        let animation_clip = animation_clips.get(animation_player.animation_clip());
-
-        if animation_clip.is_some() {
-            // if marker_trackers.0.contains_key(k)
-            // marker_trackers.0
-            // println!("Entity {:?} markers {:?}", entity, markers);
-            // println!("Player {:?} {}", animation_player.elapsed(), animation_player.completions());
-
-            // FIMXE: yikes ! very inneficient ! perhaps add boilerplate to the "start playing animation" code so we know what is playing
-            let animation_name = animations.named_animations.iter().find_map(|(key, value)| {
-                if value == animation_player.animation_clip() {
-                    Some(key)
-                } else {
-                    None
-                }
-            });
-            if animation_name.is_some() {
-                let animation_name = animation_name.unwrap();
-
-                let animation_length_seconds = animation_clip.unwrap().duration();
-                let animation_length_frames = animation_infos
-                    .animations
-                    .iter()
-                    .find(|anim| &anim.name == animation_name)
-                    .unwrap()
-                    .frames_length;
-                // TODO: we also need to take playback speed into account
-                let time_in_animation = animation_player.elapsed()
-                    - (animation_player.completions() as f32) * animation_length_seconds;
-                let frame_seconds =
-                    (animation_length_frames as f32 / animation_length_seconds) * time_in_animation;
-                let frame = frame_seconds as u32;
-
-                let matching_animation_marker = &markers.0[animation_name];
-                if matching_animation_marker.contains_key(&frame) {
-                    let matching_markers_per_frame = matching_animation_marker.get(&frame).unwrap();
-                    // println!("FOUND A MARKER {:?} at frame {}", matching_markers_per_frame, frame);
-                    //emit an event , something like AnimationMarkerReached(entity, animation_name, frame, marker_name)
-                    // FIXME: problem, this can fire multiple times in a row, depending on animation length , speed , etc
-                    for marker_name in matching_markers_per_frame {
-                        animation_marker_events.send(AnimationMarkerReached {
-                            entity: entity,
-                            animation_name: animation_name.clone(),
-                            frame: frame,
-                            marker_name: marker_name.clone(),
-                        });
-                    }
-                }
-            }
-        }
-    }
-}
-
-pub fn react_to_animation_markers(
-    mut animation_marker_events: EventReader<AnimationMarkerReached>,
-) {
-    for event in animation_marker_events.read() {
-        println!("animation marker event {:?}", event)
-    }
-}

testing/bevy_example/src/game/mod.rs

@@ -1,19 +1,13 @@
-pub mod animation;
 pub mod in_game;
-pub use animation::*;
-pub use in_game::*;
-
-use std::{collections::HashMap, fs, time::Duration};
-
-use bevy_gltf_blueprints::{
-    AnimationInfos, AnimationMarkerReached, AnimationMarkerTrackers, AnimationMarkers,
-    BlueprintAnimationPlayerLink, BlueprintAnimations, BlueprintName, BlueprintsList,
-    GltfBlueprintsSet, InstanceAnimationPlayerLink, InstanceAnimations,
+use std::{
+    collections::HashMap, fs, time::Duration
 };
 
+use bevy_gltf_blueprints::{Animated, AnimationMarkers, BlueprintAnimationPlayerLink, BlueprintAnimations, BlueprintName, BlueprintsList, GltfBlueprintsSet, InstanceAnimationPlayerLink, InstanceAnimations};
+pub use in_game::*;
+
 use bevy::{
-    ecs::query, gltf::Gltf, prelude::*, render::view::screenshot::ScreenshotManager,
-    time::common_conditions::on_timer, window::PrimaryWindow,
+    ecs::query, gltf::Gltf, prelude::*, render::view::screenshot::ScreenshotManager, time::common_conditions::on_timer, window::PrimaryWindow
 };
 use bevy_gltf_worlflow_examples_common_rapier::{AppState, GameState};
 
@@ -24,10 +18,11 @@ fn start_game(mut next_app_state: ResMut<NextState<AppState>>) {
     next_app_state.set(AppState::AppLoading);
 }
 
+
 // if the export from Blender worked correctly, we should have animations (simplified here by using AnimationPlayerLink)
 // if the export from Blender worked correctly, we should have an Entity called "Blueprint4_nested" that has a child called "Blueprint3" that has a "BlueprintName" component with value Blueprint3
 // if the export from Blender worked correctly, we should have a blueprints_list
-// if the export from Blender worked correctly, we should have the correct tree of entities
+// if the export from Blender worked correctly, we should have the correct tree of entities 
 #[allow(clippy::too_many_arguments)]
 fn validate_export(
     parents: Query<&Parent>,
@@ -38,7 +33,7 @@ fn validate_export(
     empties_candidates: Query<(Entity, &Name, &GlobalTransform)>,
 
     blueprints_list: Query<(Entity, &BlueprintsList)>,
-    root: Query<(Entity, &Name, &Children), (Without<Parent>, With<Children>)>,
+    root: Query<(Entity, &Name, &Children), (Without<Parent>, With<Children>)>
 ) {
     let animations_found = !animation_player_links.is_empty();
 
@@ -84,23 +79,22 @@ fn validate_export(
         let mut tree: HashMap<String, Vec<String>> = HashMap::new();
 
         for child in children.iter_descendants(root.0) {
-            let child_name: String = names
-                .get(child)
-                .map_or(String::from("no_name"), |e| e.to_string()); //|e| e.to_string(), || "no_name".to_string());
-                                                                     //println!("  child {}", child_name);
+            let child_name:String = names.get(child).map_or(String::from("no_name"), |e| e.to_string() ); //|e| e.to_string(), || "no_name".to_string());
+            //println!("  child {}", child_name);
             let parent = parents.get(child).unwrap();
-            let parent_name: String = names
-                .get(parent.get())
-                .map_or(String::from("no_name"), |e| e.to_string()); //|e| e.to_string(), || "no_name".to_string());
-            tree.entry(parent_name)
-                .or_default()
-                .push(child_name.clone());
-        }
+            let parent_name:String = names.get(parent.get()).map_or(String::from("no_name"), |e| e.to_string() ); //|e| e.to_string(), || "no_name".to_string());
+            tree.entry(parent_name).or_default().push(child_name.clone());
+        } 
 
         let hierarchy = to_json_string(&tree);
-        fs::write("bevy_hierarchy.json", hierarchy).expect("unable to write hierarchy file")
+        fs::write(
+            "bevy_hierarchy.json",
+            hierarchy
+        )
+        .expect("unable to write hierarchy file")
     }
 
+
     fs::write(
         "bevy_diagnostics.json",
         format!(
@@ -124,6 +118,244 @@ fn exit_game(mut app_exit_events: ResMut<Events<bevy::app::AppExit>>) {
     app_exit_events.send(bevy::app::AppExit);
 }
 
+
+#[derive(Resource)]
+struct MainAnimations(Vec<Handle<AnimationClip>>);
+
+#[derive(Resource)]
+struct AnimTest(Handle<Gltf>);
+fn setup_main_scene_animations(
+    asset_server: Res<AssetServer>,
+    mut commands: Commands,
+) {
+    /*commands.insert_resource(MainAnimations(vec![
+        asset_server.load("models/World.glb#Blueprint1_jump"),
+        asset_server.load("models/World.glb#Blueprint1_move"),
+
+        // asset_server.load("models/library/Blueprint6_animated.glb#Run"),
+
+    ]));*/
+
+    commands.insert_resource(AnimTest(asset_server.load("models/World.glb")));
+}
+
+fn animations(
+    added_animation_players:Query<(Entity, &Name, &AnimationPlayer)>,
+    addded_animateds:Query<(Entity, &Name, &Animated),(Added<Animated>)>,
+
+    animtest: Res<AnimTest>,
+
+    mut commands: Commands,
+    assets_gltf: Res<Assets<Gltf>>,
+
+    parents: Query<&Parent>,
+    names: Query<&Name>,
+
+) {
+    for (entity, name, animated) in addded_animateds.iter() {
+        // println!("animated stuf {:?} on entity {}", animated, name);
+        let gltf = assets_gltf.get(&animtest.0).unwrap();
+
+        let animations_list = animated;
+        let mut matching_data = true;
+        for animation_name in &animations_list.animations {
+            if !gltf.named_animations.contains_key(animation_name){
+                matching_data = false;
+                break;
+            }
+        }
+        if matching_data {
+            println!("inserting Animations components into {} ({:?})", name, entity);
+            println!("Found match {:?}", gltf.named_animations);
+            // commands.entity(entity).remove::<Animations>();
+            // FIXME: for some reason this does NOT overwrite the component ??
+            
+                commands.entity(entity).insert(
+                    InstanceAnimations {
+                        named_animations: gltf.named_animations.clone(),
+                    },
+                );
+            
+          
+            //animations.named_animations = gltf.named_animations.clone();
+            
+
+            for ancestor in parents.iter_ancestors(entity) {
+                if added_animation_players.contains(ancestor) {
+                    println!("found match with animationPlayer !! {:?}",names.get(ancestor));
+                    commands.entity(entity).insert(InstanceAnimationPlayerLink(ancestor));
+                }
+                // info!("{:?} is an ancestor of {:?}", ancestor, player);
+            }
+        }
+    }
+}
+
+fn play_animations(
+    animated_marker1: Query<(&InstanceAnimationPlayerLink, &InstanceAnimations), (With<Animated>, With<Marker1>)>,
+    animated_marker2: Query<(&InstanceAnimationPlayerLink, &InstanceAnimations), (With<Animated>, With<Marker2>)>,
+    animated_marker3: Query<(&InstanceAnimationPlayerLink, &InstanceAnimations, &BlueprintAnimationPlayerLink, &BlueprintAnimations), (With<Animated>, With<Marker3>)>,
+
+    mut animation_players: Query<&mut AnimationPlayer>,
+    keycode: Res<ButtonInput<KeyCode>>,
+
+) {
+    if keycode.just_pressed(KeyCode::KeyM) {
+        for (link, animations) in animated_marker1.iter() {
+            println!("animations {:?}", animations.named_animations);
+            let mut animation_player = animation_players.get_mut(link.0).unwrap();
+            let anim_name = "Blueprint1_move";
+            animation_player
+                .play_with_transition(
+                    animations
+                        .named_animations
+                        .get(anim_name)
+                        .expect("animation name should be in the list")
+                        .clone(),
+                    Duration::from_secs(5),
+                )
+                .repeat();
+        }
+    }
+    if keycode.just_pressed(KeyCode::KeyJ) {
+        for (link, animations) in animated_marker1.iter() {
+            println!("animations {:?}", animations.named_animations);
+            let mut animation_player = animation_players.get_mut(link.0).unwrap();
+            let anim_name = "Blueprint1_jump";
+            animation_player
+                .play_with_transition(
+                    animations
+                        .named_animations
+                        .get(anim_name)
+                        .expect("animation name should be in the list")
+                        .clone(),
+                    Duration::from_secs(5),
+                )
+                .repeat();
+        }
+    }
+
+    if keycode.just_pressed(KeyCode::KeyA) {
+        for (link, animations) in animated_marker2.iter() {
+            println!("animations {:?}", animations.named_animations);
+            let mut animation_player = animation_players.get_mut(link.0).unwrap();
+            let anim_name = "Blueprint1_move";
+            animation_player
+                .play_with_transition(
+                    animations
+                        .named_animations
+                        .get(anim_name)
+                        .expect("animation name should be in the list")
+                        .clone(),
+                    Duration::from_secs(5),
+                )
+                .repeat();
+        }
+    }
+    if keycode.just_pressed(KeyCode::KeyB) {
+        for (link, animations) in animated_marker2.iter() {
+            println!("animations {:?}", animations.named_animations);
+            let mut animation_player = animation_players.get_mut(link.0).unwrap();
+            let anim_name = "Blueprint1_jump";
+            animation_player
+                .play_with_transition(
+                    animations
+                        .named_animations
+                        .get(anim_name)
+                        .expect("animation name should be in the list")
+                        .clone(),
+                    Duration::from_secs(5),
+                )
+                .repeat();
+        }
+    }
+
+    // play instance animation
+    if keycode.just_pressed(KeyCode::KeyW) {
+        for (link, animations, _, _) in animated_marker3.iter() {
+            println!("animations {:?}", animations.named_animations);
+            let mut animation_player = animation_players.get_mut(link.0).unwrap();
+            let anim_name = "Blueprint8_move";
+            animation_player
+                .play_with_transition(
+                    animations
+                        .named_animations
+                        .get(anim_name)
+                        .expect("animation name should be in the list")
+                        .clone(),
+                    Duration::from_secs(5),
+                )
+                .repeat();
+        }
+    }
+    // play blueprint animation
+    if keycode.just_pressed(KeyCode::KeyX) {
+        for (_, _, link, animations) in animated_marker3.iter() {
+            println!("animations {:?}", animations.named_animations);
+            let mut animation_player = animation_players.get_mut(link.0).unwrap();
+            let anim_name = "Walk";
+            animation_player
+                .play_with_transition(
+                    animations
+                        .named_animations
+                        .get(anim_name)
+                        .expect("animation name should be in the list")
+                        .clone(),
+                    Duration::from_secs(5),
+                )
+                .repeat();
+        }
+    }
+}
+
+fn trigger_event_based_on_animation_marker(
+    bla: Query<(Entity, &AnimationMarkers, &InstanceAnimationPlayerLink, &InstanceAnimations)>,
+    animation_players: Query<&AnimationPlayer>,
+    animation_clips: Res<Assets<AnimationClip>>
+) {
+    for (entity, markers, link, animations) in bla.iter() {
+        let animation_player = animation_players.get(link.0).unwrap();
+        
+        let animation_clip = animation_clips.get(animation_player.animation_clip());
+
+        if animation_clip.is_some(){
+            // println!("Entity {:?} markers {:?}", entity, markers);
+            // println!("Player {:?} {}", animation_player.elapsed(), animation_player.completions());
+
+            let animation_total_length = animation_clip.unwrap().duration();
+            let animation_total_frames = 80; // FIXME just for testing
+            // TODO: we also need to take playback speed into account
+            let time_in_animation = animation_player.elapsed() - (animation_player.completions() as f32) * animation_total_length;//(animation_player.elapsed() / (animation_player.completions() as f32 + 1.0)) ;// / animation_total_length;
+            let time_bla = (animation_total_frames as f32 / animation_total_length)  * time_in_animation ;
+            let frame = time_bla as u32;
+            // println!("time_in_animation {} out of {}, completions {}, // frame {}",time_in_animation, animation_total_length, animation_player.completions(), frame);
+            //animation_player.animation_clip()
+
+            let matching_animation_marker = &markers.0[&"Blueprint1_jump".to_string()];
+            if matching_animation_marker.contains_key(&frame) {
+                let matching_markers_per_frame = matching_animation_marker.get(&frame).unwrap();
+                println!("FOUND A MARKER {:?} at frame {}", matching_markers_per_frame, frame);
+            }
+        }
+       
+    }
+}
+
+#[derive(Component, Reflect, Default, Debug)]
+#[reflect(Component)]
+/// flag component for testing
+pub struct Marker1;
+
+#[derive(Component, Reflect, Default, Debug)]
+#[reflect(Component)]
+/// flag component for testing
+pub struct Marker2;
+
+#[derive(Component, Reflect, Default, Debug)]
+#[reflect(Component)]
+/// flag component for testing
+pub struct Marker3;
+
 pub struct GamePlugin;
 impl Plugin for GamePlugin {
     fn build(&self, app: &mut App) {
@@ -142,8 +374,6 @@ impl Plugin for GamePlugin {
                 .after(GltfBlueprintsSet::AfterSpawn)
             )
             .add_systems(Update, play_animations)
-            .add_systems(Update, react_to_animation_markers)
-
             /* .add_systems(Update, generate_screenshot.run_if(on_timer(Duration::from_secs_f32(0.2)))) // TODO: run once
             .add_systems(
                 Update,

tools/gltf_auto_export/helpers/helpers_scenes.py

@@ -27,17 +27,27 @@ def remove_unwanted_custom_properties(object):
 # TODO: rename actions ?
 # reference https://github.com/KhronosGroup/glTF-Blender-IO/blob/main/addons/io_scene_gltf2/blender/exp/animation/gltf2_blender_gather_action.py#L481
 def copy_animation_data(source, target):
+    """if source.data:
+        data = source.data.copy()
+        target.data = data"""
     if source.animation_data and source.animation_data:
+        #print("copying animation data from", source.name, "to", target.name)
+        print("I have animation data")
         ad = source.animation_data
-
+        """if ad.action:
+            print(source.name,'uses',ad.action.name)"""
+        
+        animations = []
         blender_actions = []
         blender_tracks = {}
 
         # TODO: this might need to be modified/ adapted to match the standard gltf exporter settings
         for track in ad.nla_tracks:
+            #print("track", track.name, track.active)
             non_muted_strips = [strip for strip in track.strips if strip.action is not None and strip.mute is False]
+
             for strip in non_muted_strips: #t.strips:
-                # print("  ", source.name,'uses',strip.action.name, "active", strip.active, "action", strip.action)
+                print("  ", source.name,'uses',strip.action.name, "active", strip.active, "action", strip.action)
                 blender_actions.append(strip.action)
                 blender_tracks[strip.action.name] = track.name
 
@@ -47,28 +57,31 @@ def copy_animation_data(source, target):
         blender_actions.sort(key = lambda a: a.name.lower())
         
         markers_per_animation = {}
-        animations_infos = []
-
         for action in blender_actions:
             animation_name = blender_tracks[action.name]
-            animations_infos.append(
-                f'(name: "{animation_name}", frame_start: {action.frame_range[0]}, frame_end: {action.frame_range[1]}, frames_length: {action.frame_range[1] - action.frame_range[0]}, frame_start_override: {action.frame_start}, frame_end_override: {action.frame_end})'
-            )
+            animations.append(animation_name)
+
             markers_per_animation[animation_name] = {}
 
+            print("markers", action.pose_markers, "for", action.name)
             for marker in action.pose_markers:
+
                 if marker.frame not in markers_per_animation[animation_name]:
                     markers_per_animation[animation_name][marker.frame] = []
+                print("  marker", marker.name, marker.frame)
+               
                 markers_per_animation[animation_name][marker.frame].append(marker.name)
 
+        print("animations", animations)
+
         """if target.animation_data == None:
             target.animation_data_create()
         target.animation_data.action = source.animation_data.action.copy()"""
-        # alternative method, using the built-in link animation operator
+        # alternative method, using the build in link animation operator
         with bpy.context.temp_override(active_object=source, selected_editable_objects=[target]): 
             bpy.ops.object.make_links_data(type='ANIMATION')
-        # we add an "AnimationInfos" component 
-        target['AnimationInfos'] = f'(animations: {animations_infos})'.replace("'","")
+        # we add an "animated" flag component 
+        target['Animated'] = f'(animations: {animations})'.replace("'", '"')
         
         markers_formated = '{'
         for animation in markers_per_animation.keys():
@@ -79,7 +92,10 @@ def copy_animation_data(source, target):
                 markers_formated += f"{frame}:{markers}, ".replace("'", '"')
             markers_formated += '}, '             
         markers_formated += '}' 
+        print("markers_formated", markers_formated)
         target["AnimationMarkers"] = f'( {markers_formated} )'
+        #'({"animation_name": {5: ["Marker_1"]} })'
+        #f'({json.dumps(markers_per_animation)})'
         
         """print("copying animation data for", source.name, target.animation_data)
         properties = [p.identifier for p in source.animation_data.bl_rna.properties if not p.is_readonly]
@@ -136,7 +152,7 @@ def duplicate_object(object, parent, combine_mode, destination_collection, libra
                 copy.parent = parent_empty
            """
 
-    # print(nester, "copy", copy)
+    print(nester, "copy", copy)
     # do this both for empty replacements & normal copies
     if parent is not None:
         copy.parent = parent