diff --git a/src/tsr/systems.hpp b/src/tsr/entity.hpp
similarity index 65%
rename from src/tsr/systems.hpp
rename to src/tsr/entity.hpp
index 2b9a3b2..c516998 100644
--- a/src/tsr/systems.hpp
+++ b/src/tsr/entity.hpp
@@ -1,3 +1,3 @@
 #pragma once
 #include <entt/entt.hpp>
-#include "world.hpp"
\ No newline at end of file
+#include "game.hpp"
\ No newline at end of file
diff --git a/src/tsr/entity_model.cpp b/src/tsr/entity_model.cpp
new file mode 100644
index 0000000..7cb554a
--- /dev/null
+++ b/src/tsr/entity_model.cpp
@@ -0,0 +1,143 @@
+#include "entity_model.hpp"
+
+using namespace TSR;
+
+void ModelSystem::AddModel(entt::entity ent, const std::string& name) {
+    auto& reg = Game::Registry();
+    auto& comp = reg.emplace_or_replace<ModelComponent>(ent);
+    comp.model = AssetMap::Get<Model>(name);
+
+    if (comp.model->IsSkeletal()) {
+        auto num_bones = comp.model->GetSkeleton().Bones().size();
+        comp.bone_transforms_mat.resize(num_bones);
+        comp.bone_transforms[0].resize(num_bones);
+        comp.bone_transforms[1].resize(num_bones);
+    }
+
+    if (comp.model->HasAnimations())
+        reg.emplace_or_replace<AnimationComponent>(ent);
+    else
+        reg.erase<AnimationComponent>(ent);
+
+    for (int i = 0; i < TSR_NUM_COLORS; ++i)
+        comp.ctx.colors[i] = glm::vec4(1.0f);
+
+    comp.spawned_at = Game::FrameNum();
+
+    auto& bone_transforms = comp.bone_transforms[Game::FrameNum() % 2];
+    for (auto& t : bone_transforms) {
+        t.pos = glm::vec3(0.0f);
+        t.rot = glm::quat(glm::mat4(1.0f));
+        t.scl = glm::vec3(1.0f);
+    }
+}
+
+void TSR::ModelSystem::RemoveModel(entt::entity ent) {
+    auto& reg = Game::Registry();
+    reg.erase<ModelComponent>(ent);
+    reg.erase<AnimationComponent>(ent);
+}
+
+void ModelSystem::Anim(entt::entity ent, const std::string& anim_name) {
+    auto& comp = Game::Registry().get<ModelComponent>(ent);
+    auto id = comp.model->GetAnimId(anim_name);
+
+    auto& anim = comp.animations[id];
+    anim.t = 0.0f;
+
+}
+
+void ModelSystem::StopAnim(entt::entity ent, const std::string& anim_name) {
+    auto& comp = Game::Registry().get<ModelComponent>(ent);
+    auto id = comp.model->GetAnimId(anim_name);
+
+    comp.animations.erase(id);
+}
+
+void ModelSystem::Animate() {
+    auto frame_idx = Game::FrameNum() % 2;
+    
+    float frame_time = 1.0f / (float)Game::TPS();
+
+    auto v = Game::Registry().view<AnimationComponent, ModelComponent>();
+    for (auto [ent, model] : v.each()) {
+        auto& anims = model.animations;
+        auto& bone_transforms = model.bone_transforms[frame_idx];
+
+        for (auto it = anims.begin(); it != anims.end(); ) {
+            bool remove = false;
+            const auto& anim = model.model->GetAnim(it->first);
+            auto& anim_data = it->second;
+            
+            anim_data.t += anim.tps * frame_time;
+
+            if (anim_data.t > anim.duration) {
+                if (anim.is_cyclic) {
+                    anim_data.t = glm::mod(anim_data.t, anim.duration);
+                }
+                else {
+                    anim_data.t = anim.duration;
+                    remove = true;
+                }
+            }
+
+            if (anim.skel) {
+                auto& skel_anim = *anim.skel;
+                
+                for (int i = 0; i < anim.skel->Channels().size(); ++i) {
+
+                    int fr1 = glm::floor(anim_data.t);
+                    int fr2 = glm::ceil(anim_data.t);
+                    float t = glm::fract(anim_data.t);
+
+                    const auto& frame1 = anim.skel->Channels()[i].frames[fr1];
+                    const auto& frame2 = anim.skel->Channels()[i].frames[fr2];
+
+                    auto& trans = bone_transforms[anim.bone_ids[i]];
+                    trans.pos = glm::mix(frame1.pos, frame2.pos, t);
+                    trans.rot = glm::slerp(frame1.rot, frame2.rot, t);
+                    trans.scl = glm::mix(frame1.scl, frame2.scl, t);
+                }
+            }
+            
+            if (remove)
+                it = anims.erase(it);
+            else
+                ++it;
+        }
+
+
+    }
+
+}
+
+void ModelSystem::Render(TSR::Renderer& renderer) {
+
+    //auto v = World::Registry().view<ModelComponent, TransformComponent>();
+    //for (auto [ent, mesh, render, trans] : v.each()) {
+    //    render.ctx.m_model_matrix = glm::toMat4(trans.rot) * glm::translate(glm::mat4(1.0f), trans.pos);
+    //   
+    //    for (auto& drawable : mesh.parts)
+    //        renderer.Add(TSR::DrawRef(&drawable, &render.ctx));
+
+
+    //}
+
+    auto frame_t = Game::FrameT();
+    auto frame_idx1 = Game::FrameNum() % 2;
+    auto frame_idx0 = 1 - frame_idx1;
+
+    auto v = Game::Registry().view<ModelComponent, TransformComponent>();
+    for (auto [ent, model, trans] : v.each()) {
+
+    }
+
+
+
+
+    //entt::view<MeshComponent> v(World::Get().Reg());
+
+
+    //World::Get().Reg()
+
+}
\ No newline at end of file
diff --git a/src/tsr/entity_model.hpp b/src/tsr/entity_model.hpp
new file mode 100644
index 0000000..7eb4f7f
--- /dev/null
+++ b/src/tsr/entity_model.hpp
@@ -0,0 +1,39 @@
+#pragma once
+#include "entity.hpp"
+#include "model.hpp"
+#include <vector>
+#include <map>
+#include "../tsr/renderer.hpp"
+
+namespace TSR {
+
+    struct ModelAnimation {
+        float t;
+    };
+
+    struct ModelComponent {
+        AssetPtr<Model> model;
+        TSR::DrawCtx ctx;
+        std::vector<glm::mat4> bone_transforms_mat;
+        std::vector<BoneTransform> bone_transforms[2];
+        std::map<AnimationId, ModelAnimation> animations;
+        uint64_t spawned_at;
+    };
+
+    struct AnimationComponent {};
+
+    class ModelSystem {
+    public:
+        static void AddModel(entt::entity ent, const std::string& name);
+        static void RemoveModel(entt::entity ent);
+        static void Anim(entt::entity ent, const std::string& anim_name);
+        static void StopAnim(entt::entity ent, const std::string& anim_name);
+
+        static void Animate();
+        static void Render(Renderer& renderer);
+
+
+
+    };
+
+}
diff --git a/src/tsr/game.cpp b/src/tsr/game.cpp
new file mode 100644
index 0000000..478835e
--- /dev/null
+++ b/src/tsr/game.cpp
@@ -0,0 +1,8 @@
+#include "game.hpp"
+
+using namespace TSR;
+
+entt::registry Game::s_registry;
+uint64_t Game::s_sv_frame = 0;
+ float Game::s_frame_t = 0.0f;
+ int Game::s_tps = 50;
\ No newline at end of file
diff --git a/src/tsr/game.hpp b/src/tsr/game.hpp
new file mode 100644
index 0000000..c094448
--- /dev/null
+++ b/src/tsr/game.hpp
@@ -0,0 +1,34 @@
+#pragma once
+#include <glm/glm.hpp>
+#include <glm/gtc/matrix_transform.hpp>
+#include <glm/gtc/type_ptr.hpp>
+#include <glm/gtx/quaternion.hpp>
+#include <memory>
+#include <entt/entt.hpp>
+
+namespace TSR {
+
+    struct TransformComponent {
+        glm::vec3 pos[2];
+        glm::quat rot[2];
+    };
+
+    class Game {
+        static entt::registry s_registry;
+        static uint64_t s_sv_frame;
+        static float s_frame_t;
+        static int s_tps;
+
+    public:
+        static void SvFrame();
+        static void ClFrame(float frame_t);
+
+        static entt::registry& Registry() { return s_registry; }
+        static uint64_t FrameNum() { return s_sv_frame; }
+        static float FrameT() { return s_frame_t; }
+        static int TPS() { return s_tps; }
+    };
+
+}
+
+
diff --git a/src/tsr/ia.hpp b/src/tsr/ia.hpp
index 8e55192..2bf0414 100644
--- a/src/tsr/ia.hpp
+++ b/src/tsr/ia.hpp
@@ -22,7 +22,7 @@ namespace TSR {
         glm::mat4 offset;
     };
 
-    struct SkAnimFrame {
+    struct BoneTransform {
         glm::vec3 pos;
         glm::quat rot;
         glm::vec3 scl;
@@ -30,7 +30,7 @@ namespace TSR {
 
     struct SkAnimChannel {
         std::string name;
-        std::vector<SkAnimFrame> frames;
+        std::vector<BoneTransform> frames;
     };
 
     //struct SkAnim {
diff --git a/src/tsr/model.cpp b/src/tsr/model.cpp
index 98e62de..cb0e8b8 100644
--- a/src/tsr/model.cpp
+++ b/src/tsr/model.cpp
@@ -116,8 +116,19 @@ Model::Model(const std::string& name) {
                 anim.skel = AssetMap::Get<SkAnim>(anim_json.at("skel").get<std::string>());
                 for (const auto& chan : anim.skel->Channels())
                     anim.bone_ids.push_back(m_skeleton->GetBoneIdByName(chan.name));
+
+                anim.duration = anim.skel->Duration();
+                anim.tps = anim.skel->TPS();
+            }
+            else {
+                anim.duration = anim_json.at("duration").get<float>();
+                anim.tps = anim_json.at("tps").get<float>();
             }
  
+            anim.is_cyclic = false;
+            if (anim_json.contains("cyclic"))
+                anim.is_cyclic = anim_json.at("cyclic").get<bool>();
+
             // events
         }
     }
diff --git a/src/tsr/model.hpp b/src/tsr/model.hpp
index 31be706..d4eae24 100644
--- a/src/tsr/model.hpp
+++ b/src/tsr/model.hpp
@@ -29,17 +29,23 @@ namespace TSR {
     struct Animation {
         AssetPtr<SkAnim> skel;
         std::vector<int> bone_ids;
+        float duration;
+        float tps;
+        bool is_cyclic;
         /* events */
     };
 
+    typedef int AnimationId;
+    typedef int PartId;
+
     class Model : public Asset {
         AssetPtr<Skeleton> m_skeleton;
 
         std::vector<Drawable> m_parts;
-        std::map<std::string, int> m_part_names;
+        std::map<std::string, PartId> m_part_names;
 
         std::vector<Animation> m_animations;
-        std::map<std::string, int> m_anim_names;
+        std::map<std::string, AnimationId> m_anim_names;
 
     public:
 
@@ -60,6 +66,8 @@ namespace TSR {
         const Skeleton& GetSkeleton() const { return *m_skeleton; }
         int GetAnimId(const std::string& name) { return m_anim_names.at(name); }
         const Animation& GetAnim(int id) { return m_animations[id]; }
+        bool IsSkeletal() const { return m_skeleton.get() != nullptr; }
+        bool HasAnimations() const { return m_animations.size() > 0; }
     };
 
 }
\ No newline at end of file
diff --git a/src/tsr/renderer.hpp b/src/tsr/renderer.hpp
index eecdaa3..cbb7147 100644
--- a/src/tsr/renderer.hpp
+++ b/src/tsr/renderer.hpp
@@ -9,6 +9,7 @@
 #include "assets.hpp"
 #include "ia.hpp"
 
+
 namespace TSR {
 
     enum RenderType {
@@ -93,7 +94,7 @@ namespace TSR {
 
     struct BasicDrawCtx {
         glm::mat4 model_matrix;
-        glm::vec4 colors[4];
+        glm::vec4 colors[TSR_NUM_COLORS];
     };
 
     class InstancedSSBO {
diff --git a/src/tsr/rendersystem.cpp b/src/tsr/rendersystem.cpp
deleted file mode 100644
index 2ea9449..0000000
--- a/src/tsr/rendersystem.cpp
+++ /dev/null
@@ -1,26 +0,0 @@
-#include "rendersystem.hpp"
-
-using namespace TSR;
-
-void RenderSystem::Render(TSR::Renderer& renderer) {
-
-    //auto v = World::Registry().view<ModelComponent, TransformComponent>();
-    //for (auto [ent, mesh, render, trans] : v.each()) {
-    //    render.ctx.m_model_matrix = glm::toMat4(trans.rot) * glm::translate(glm::mat4(1.0f), trans.pos);
-    //   
-    //    for (auto& drawable : mesh.parts)
-    //        renderer.Add(TSR::DrawRef(&drawable, &render.ctx));
-
-
-    //}
-
-
-
-
-
-    //entt::view<MeshComponent> v(World::Get().Reg());
-
-
-    //World::Get().Reg()
-
-}
diff --git a/src/tsr/rendersystem.hpp b/src/tsr/rendersystem.hpp
deleted file mode 100644
index 346fbd8..0000000
--- a/src/tsr/rendersystem.hpp
+++ /dev/null
@@ -1,25 +0,0 @@
-#pragma once
-#include "systems.hpp"
-#include <vector>
-#include "../tsr/renderer.hpp"
-
-namespace TSR {
-
-    struct ModelComponent {
-        TSR::DrawCtx ctx;
-        
-        std::vector<glm::mat4> bone_transforms;
-
-
-    };
-
-    class RenderSystem {
-    public:
-
-        static void Render(TSR::Renderer& renderer);
-
-
-
-    };
-
-}
diff --git a/src/tsr/tsr.hpp b/src/tsr/tsr.hpp
index aa87688..f6b7580 100644
--- a/src/tsr/tsr.hpp
+++ b/src/tsr/tsr.hpp
@@ -22,6 +22,8 @@
 #define TSR_NO_BONE 255
 #define TSR_MAX_BONES TSR_NO_BONE
 
+#define TSR_NUM_COLORS 4
+
 #define U8(_S)    (const char*)u8##_S
 
 namespace TSR {
diff --git a/src/tsr/world.cpp b/src/tsr/world.cpp
deleted file mode 100644
index c100111..0000000
--- a/src/tsr/world.cpp
+++ /dev/null
@@ -1,6 +0,0 @@
-#include "world.hpp"
-
-using namespace TSR;
-
-//std::unique_ptr<World> World::s_world;
-entt::registry World::s_registry;
\ No newline at end of file
diff --git a/src/tsr/world.hpp b/src/tsr/world.hpp
deleted file mode 100644
index 3f9f8d6..0000000
--- a/src/tsr/world.hpp
+++ /dev/null
@@ -1,33 +0,0 @@
-#pragma once
-#include <glm/glm.hpp>
-#include <glm/gtc/matrix_transform.hpp>
-#include <glm/gtc/type_ptr.hpp>
-#include <glm/gtx/quaternion.hpp>
-#include <memory>
-#include <entt/entt.hpp>
-
-namespace TSR {
-
-    struct TransformComponent {
-        glm::vec3 pos;
-        glm::quat rot;
-    };
-
-    class World {
-        static entt::registry s_registry;
-
-        //entt::registry m_reg;
-
-
-
-    public:
-
-        static entt::registry& Registry() {
-            return s_registry;
-        }
-
-    };
-
-}
-
-
diff --git a/tsrecs.vcxproj b/tsrecs.vcxproj
index 4f643c5..90d39ba 100644
--- a/tsrecs.vcxproj
+++ b/tsrecs.vcxproj
@@ -131,8 +131,8 @@
   <ItemGroup>
     <ClCompile Include="src\tsr\camera.cpp" />
     <ClCompile Include="src\tsr\model.cpp" />
-    <ClCompile Include="src\tsr\rendersystem.cpp" />
-    <ClCompile Include="src\tsr\world.cpp" />
+    <ClCompile Include="src\tsr\entity_model.cpp" />
+    <ClCompile Include="src\tsr\game.cpp" />
     <ClCompile Include="src\tsr\assets.cpp" />
     <ClCompile Include="src\tsr\filesystem.cpp" />
     <ClCompile Include="src\tsr\ia.cpp" />
@@ -143,9 +143,9 @@
   <ItemGroup>
     <ClInclude Include="src\tsr\camera.hpp" />
     <ClInclude Include="src\tsr\model.hpp" />
-    <ClInclude Include="src\tsr\rendersystem.hpp" />
-    <ClInclude Include="src\tsr\systems.hpp" />
-    <ClInclude Include="src\tsr\world.hpp" />
+    <ClInclude Include="src\tsr\entity_model.hpp" />
+    <ClInclude Include="src\tsr\entity.hpp" />
+    <ClInclude Include="src\tsr\game.hpp" />
     <ClInclude Include="src\tsr\assets.hpp" />
     <ClInclude Include="src\tsr\filesystem.hpp" />
     <ClInclude Include="src\tsr\ia.hpp" />
diff --git a/tsrecs.vcxproj.filters b/tsrecs.vcxproj.filters
index 3d11d62..8df5ece 100644
--- a/tsrecs.vcxproj.filters
+++ b/tsrecs.vcxproj.filters
@@ -33,10 +33,10 @@
     <ClCompile Include="src\tsr\ia.cpp">
       <Filter>Source Files</Filter>
     </ClCompile>
-    <ClCompile Include="src\tsr\world.cpp">
+    <ClCompile Include="src\tsr\game.cpp">
       <Filter>Source Files</Filter>
     </ClCompile>
-    <ClCompile Include="src\tsr\rendersystem.cpp">
+    <ClCompile Include="src\tsr\entity_model.cpp">
       <Filter>Source Files</Filter>
     </ClCompile>
     <ClCompile Include="src\tsr\model.cpp">
@@ -65,13 +65,13 @@
     <ClInclude Include="src\tsr\tsr.hpp">
       <Filter>Header Files</Filter>
     </ClInclude>
-    <ClInclude Include="src\tsr\world.hpp">
+    <ClInclude Include="src\tsr\game.hpp">
       <Filter>Header Files</Filter>
     </ClInclude>
-    <ClInclude Include="src\tsr\rendersystem.hpp">
+    <ClInclude Include="src\tsr\entity_model.hpp">
       <Filter>Header Files</Filter>
     </ClInclude>
-    <ClInclude Include="src\tsr\systems.hpp">
+    <ClInclude Include="src\tsr\entity.hpp">
       <Filter>Header Files</Filter>
     </ClInclude>
     <ClInclude Include="src\tsr\model.hpp">