Fixed Blend2Node::UpdateFlags().

src/AnimGraph/AnimGraphData.h

@@ -133,6 +133,7 @@ enum class SocketType {
   SocketTypeUndefined = 0,
   SocketTypeBool,
   SocketTypeAnimation,
+  SocketTypeInt,
   SocketTypeFloat,
   SocketTypeVec3,
   SocketTypeQuat,
@@ -143,7 +144,7 @@ enum class SocketType {
 constexpr size_t cSocketStringValueMaxLength = 256;
 
 static const char* SocketTypeNames[] =
-    {"", "Bool", "Animation", "Float", "Vec3", "Quat", "String"};
+    {"", "Bool", "Animation", "Int", "Float", "Vec3", "Quat", "String"};
 
 enum SocketFlags { SocketFlagNone = 0, SocketFlagAffectsTime = 1 };
 
@@ -152,6 +153,7 @@ struct Socket {
   SocketType m_type = SocketType::SocketTypeUndefined;
   union SocketValue {
     bool flag;
+    int int_value;
     float float_value;
     Vec3 vec3;
     Quat quat;
@@ -172,6 +174,10 @@ struct Socket {
       m_value.flag = value;
     }
 
+    if constexpr (std::is_same<T, int>::value) {
+      m_value.int_value = value;
+    }
+
     if constexpr (std::is_same<T, float>::value) {
       m_value.float_value = value;
     }
@@ -188,6 +194,35 @@ struct Socket {
       m_value_string = value;
     }
   }
+
+  template <typename T>
+  T GetValue() const {
+    if constexpr (std::is_same<T, bool>::value) {
+      return m_value.flag;
+    }
+
+    if constexpr (std::is_same<T, int>::value) {
+      return m_value.int_value;
+    }
+
+    if constexpr (std::is_same<T, float>::value) {
+      return m_value.float_value;
+    }
+
+    if constexpr (std::is_same<T, Vec3>::value) {
+      return m_value.vec3;
+    }
+
+    if constexpr (std::is_same<T, Quat>::value) {
+      return m_value.quat;
+    }
+
+    if constexpr (std::is_same<T, std::string>::value) {
+      return m_value_string;
+    }
+
+    return T();
+  }
 };
 
 template <typename T>
@@ -200,6 +235,10 @@ SocketType GetSocketType() {
     return SocketType::SocketTypeAnimation;
   }
 
+  if constexpr (std::is_same<T, int>::value) {
+    return SocketType::SocketTypeInt;
+  }
+
   if constexpr (std::is_same<T, float>::value) {
     return SocketType::SocketTypeFloat;
   }
@@ -356,6 +395,13 @@ struct NodeDescriptorBase {
     return *static_cast<T*>(socket->m_reference.ptr);
   }
 
+  template <typename T>
+  T GetPropertyValue(const char* name) {
+    Socket* socket = FindSocket(name, m_properties);
+    assert(GetSocketType<T>() == socket->m_type);
+    return socket->GetValue<T>();
+  }
+
   virtual void UpdateFlags(){};
 
  protected:

src/AnimGraph/AnimGraphEditor.cc

@@ -18,6 +18,8 @@ ImNodesPinShape sGetSocketShapeFromSocketType(const SocketType& socket_type) {
   switch (socket_type) {
     case SocketType::SocketTypeAnimation:
       return ImNodesPinShape_QuadFilled;
+    case SocketType::SocketTypeInt:
+      return ImNodesPinShape_CircleFilled;
     case SocketType::SocketTypeFloat:
       return ImNodesPinShape_CircleFilled;
     case SocketType::SocketTypeVec3:
@@ -165,16 +167,24 @@ void AnimGraphEditorRenderSidebar(
   int num_properties = node_resource.m_socket_accessor->m_properties.size();
   for (int i = 0; i < num_properties; i++) {
     Socket& property = node_resource.m_socket_accessor->m_properties[i];
-    if (property.m_type == SocketType::SocketTypeFloat) {
+    if (property.m_type == SocketType::SocketTypeInt) {
+      ImGui::InputInt(
+          property.m_name.c_str(),
+          reinterpret_cast<int*>(&property.m_value.int_value),
+          1);
+    } else if (property.m_type == SocketType::SocketTypeFloat) {
       ImGui::SliderFloat(
           property.m_name.c_str(),
           reinterpret_cast<float*>(&property.m_value.float_value),
           -100.f,
           100.f);
     } else if (property.m_type == SocketType::SocketTypeBool) {
-      ImGui::Checkbox(
+      bool flag_value = property.GetValue<bool>();
+      if (ImGui::Checkbox(
           property.m_name.c_str(),
-          reinterpret_cast<bool*>(property.m_reference.ptr));
+          &flag_value)) {
+        property.SetValue(flag_value);
+      }
     } else if (property.m_type == SocketType::SocketTypeString) {
       char string_buf[1024];
       memset(string_buf, '\0', sizeof(string_buf));
@@ -300,6 +310,10 @@ void AnimGraphEditorUpdate() {
         node_type_name = "SpeedScale";
       }
 
+      if (ImGui::MenuItem("LockTranslationNode")) {
+        node_type_name = "LockTranslationNode";
+      }
+
       if (ImGui::MenuItem("MathAddNode")) {
         node_type_name = "MathAddNode";
       }
@@ -373,6 +387,17 @@ void AnimGraphEditorUpdate() {
         ImGui::PopItemWidth();
       }
 
+      if (!socket_connected && (socket.m_type == SocketType::SocketTypeInt)) {
+        ImGui::SameLine();
+        int socket_value = socket.m_value.int_value;
+        ImGui::PushItemWidth(
+            130.0f - ImGui::CalcTextSize(socket.m_name.c_str()).x);
+        if (ImGui::InputInt("##hidelabel", &socket_value, 1)) {
+          socket.SetValue(socket_value);
+        }
+        ImGui::PopItemWidth();
+      }
+
       ImNodes::PushAttributeFlag(
           ImNodesAttributeFlags_EnableLinkDetachWithDragClick);
       ImNodes::EndInputAttribute();

src/AnimGraph/AnimGraphNodes.cc

@@ -82,10 +82,40 @@ void AnimSamplerNode::Evaluate(AnimGraphContext& context) {
   ozz::animation::SamplingJob sampling_job;
   sampling_job.animation = m_animation;
   sampling_job.context = &m_sampling_context;
-  sampling_job.ratio = m_time_now;
+  sampling_job.ratio = fmodf(m_time_now, m_animation->duration());
   sampling_job.output = make_span(o_output->m_local_matrices);
 
   if (!sampling_job.Run()) {
     ozz::log::Err() << "Error sampling animation." << std::endl;
   }
 }
+
+void LockTranslationNode::Evaluate(AnimGraphContext& context) {
+  o_output->m_local_matrices = i_input->m_local_matrices;
+  ozz::math::SoaFloat3 translation =
+      o_output->m_local_matrices[m_locked_bone_index].translation;
+  float x[4];
+  float y[4];
+  float z[4];
+  _mm_store_ps(x, translation.x);
+  _mm_store_ps(y, translation.y);
+  _mm_store_ps(z, translation.z);
+
+  if (m_lock_x) {
+    x[0] = 0.f;
+  }
+
+  if (m_lock_y) {
+    y[0] = 0.f;
+  }
+
+  if (m_lock_z) {
+    z[0] = 0.f;
+  }
+
+  translation.x = _mm_load_ps(x);
+  translation.y = _mm_load_ps(y);
+  translation.z = _mm_load_ps(z);
+
+  o_output->m_local_matrices[m_locked_bone_index].translation = translation;
+}

src/AnimGraph/AnimGraphNodes.h

@@ -156,8 +156,8 @@ struct SpeedScaleNode : public AnimNode {
   float* i_speed_scale = nullptr;
 
   void UpdateTime(float time_last, float time_now) override {
-    m_time_last = time_last;
+    m_time_last = m_time_now;
-    m_time_now = time_last + (time_now - time_last) * (*i_speed_scale);
+    m_time_now = m_time_last + (time_now - time_last) * (*i_speed_scale);
     m_state = AnimNodeEvalState::TimeUpdated;
   }
 
@@ -196,7 +196,7 @@ struct AnimSamplerNode : public AnimNode {
   virtual bool Init(AnimGraphContext& context) override;
   void UpdateTime(float time_last, float time_now) override {
     m_time_last = time_last;
-    m_time_now = fmodf(time_last + (time_now - time_last), m_animation->duration());
+    m_time_now = time_now;
     m_state = AnimNodeEvalState::TimeUpdated;
   }
   virtual void Evaluate(AnimGraphContext& context) override;
@@ -211,6 +211,34 @@ struct NodeDescriptor<AnimSamplerNode> : public NodeDescriptorBase {
   }
 };
 
+//
+// LockTranslationNode
+//
+struct LockTranslationNode : public AnimNode {
+  AnimData* i_input = nullptr;
+  AnimData* o_output = nullptr;
+  int m_locked_bone_index;
+  bool m_lock_x;
+  bool m_lock_y;
+  bool m_lock_z;
+
+  virtual void Evaluate(AnimGraphContext& context) override;
+};
+
+template <>
+struct NodeDescriptor<LockTranslationNode> : public NodeDescriptorBase {
+  NodeDescriptor(LockTranslationNode* node) {
+    RegisterInput("Input", &node->i_input);
+    RegisterOutput("Output", &node->o_output);
+
+    RegisterProperty("BoneIndex", &node->m_locked_bone_index);
+    RegisterProperty("LockAxisX", &node->m_lock_x);
+    RegisterProperty("LockAxisY", &node->m_lock_y);
+    RegisterProperty("LockAxisZ", &node->m_lock_z);
+  }
+};
+
+
 //
 // ConstScalarNode
 //
@@ -296,6 +324,8 @@ static inline AnimNode* AnimNodeFactory(const std::string& name) {
     result = new SpeedScaleNode;
   } else if (name == "AnimSampler") {
     result = new AnimSamplerNode;
+  } else if (name == "LockTranslationNode") {
+    result = new LockTranslationNode;
   } else if (name == "BlendTree") {
     result = new BlendTreeNode;
   } else if (name == "MathAddNode") {
@@ -324,6 +354,8 @@ static inline NodeDescriptorBase* AnimNodeDescriptorFactory(
     return CreateNodeDescriptor<SpeedScaleNode>(node);
   } else if (node_type_name == "AnimSampler") {
     return CreateNodeDescriptor<AnimSamplerNode>(node);
+  } else if (node_type_name == "LockTranslationNode") {
+    return CreateNodeDescriptor<LockTranslationNode>(node);
   } else if (node_type_name == "BlendTree") {
     return CreateNodeDescriptor<BlendTreeNode>(node);
   } else if (node_type_name == "MathAddNode") {

src/AnimGraph/AnimGraphResource.cc

@@ -35,6 +35,8 @@ json sSocketToJson(const Socket& socket) {
     if (socket.m_type == SocketType::SocketTypeBool) {
       result["value"] = socket.m_value.flag;
     } else if (socket.m_type == SocketType::SocketTypeAnimation) {
+    } else if (socket.m_type == SocketType::SocketTypeInt) {
+      result["value"] = socket.m_value.int_value;
     } else if (socket.m_type == SocketType::SocketTypeFloat) {
       result["value"] = socket.m_value.float_value;
     } else if (socket.m_type == SocketType::SocketTypeVec3) {
@@ -72,6 +74,12 @@ Socket sJsonToSocket(const json& json_data) {
   } else if (type_string == "Animation") {
     result.m_type = SocketType::SocketTypeAnimation;
     result.m_type_size = sizeof(AnimData);
+  } else if (type_string == "Int") {
+    result.m_type = SocketType::SocketTypeInt;
+    result.m_type_size = sizeof(int);
+    if (have_value) {
+      result.m_value.int_value = json_data["value"];
+    }
   } else if (type_string == "Float") {
     result.m_type = SocketType::SocketTypeFloat;
     result.m_type_size = sizeof(float);
@@ -572,6 +580,11 @@ void AnimGraphResource::setRuntimeNodeProperties(AnimGraph& instance) const {
               name.c_str(),
               property.m_value.flag);
           break;
+        case SocketType::SocketTypeInt:
+          node_instance_accessor->SetProperty(
+              name.c_str(),
+              property.m_value.int_value);
+          break;
         case SocketType::SocketTypeFloat:
           node_instance_accessor->SetProperty(
               name.c_str(),

src/main.cc

@@ -76,6 +76,7 @@ static struct {
   } loaded;
   struct {
     double frame;
+    double anim_update_time;
     float absolute;
     uint64_t laptime;
     float factor;
@@ -511,7 +512,10 @@ int main() {
         stm_round_to_common_refresh_rate(stm_laptime(&state.time.laptime)));
 
     if (!state.time.paused) {
+      state.time.anim_update_time = state.time.frame;
       state.time.absolute += state.time.frame * state.time.factor;
+    } else {
+      state.time.anim_update_time = 0.;
     }
 
     if (state.ozz.animation != nullptr) {
@@ -725,7 +729,8 @@ int main() {
 
         ImGui::SameLine();
         if (ImGui::Button("Step")) {
-          state.time.absolute += state.time.frame;
+          state.time.anim_update_time = 1. / 30.f;
+          state.time.absolute += state.time.anim_update_time;
         }
 
         if (state.ozz.animation != nullptr) {
@@ -758,9 +763,9 @@ int main() {
         skinned_mesh.CalcModelMatrices();
       }
 
-      if (state.time.use_graph && anim_graph.m_nodes.size() > 0) {
+      if (state.time.use_graph && anim_graph.m_nodes.size() > 0 && state.time.anim_update_time > 0.) {
         anim_graph.markActiveNodes();
-        anim_graph.updateTime(state.time.frame);
+        anim_graph.updateTime(state.time.anim_update_time);
         anim_graph.evaluate(anim_graph_context);
         skinned_mesh.m_local_matrices = anim_graph_output.m_local_matrices;