fix non-local players interpolation and head direction

res/scripts/components/player.lua

@@ -67,12 +67,12 @@ function on_physics_update(delta)
     mob.set_flight(player.is_flight(pid))
     body:set_body_type(player.is_noclip(pid) and "kinematic" or "dynamic")
 
-    if hud and pid == hud.get_player() then
-        local pos = tsf:get_pos()
-        local rot = get_player_rotation(pid)
-        local front = mat4.mul(rot, {0, 0, -1})
+    local rot = get_player_rotation(pid)
+    local front = mat4.mul(rot, {0, 0, -1})
+    local pos = tsf:get_pos()
 
+    if hud and pid == hud.get_player() then
         process_player_inputs(pid, rot, delta)
-        mob.look_at(vec3.add(pos, front))
     end
+    mob.look_at(vec3.add(pos, front))
 end

src/graphics/render/HandsRenderer.cpp

@@ -27,8 +27,7 @@ void HandsRenderer::renderHands(
     auto& skeleton = *this->skeleton;
     const auto& config = *skeleton.config;
 
-    // render
     modelBatch.setLightsOffset(camera.position);
     config.update(skeleton, glm::mat4(1.0f), glm::vec3());
-    config.render(assets, modelBatch, skeleton, glm::mat4(1.0f), glm::vec3());
+    config.render(assets, modelBatch, skeleton, glm::mat3(1.0f), glm::vec3());
 }

src/objects/Entities.cpp

@@ -412,7 +412,7 @@ void Entities::render(
         const auto& size = transform.size;
         if (!frustum || frustum->isBoxVisible(pos - size, pos + size)) {
             const auto* rigConfig = skeleton.config;
-            rigConfig->render(assets, batch, skeleton, transform.combined, pos);
+            rigConfig->render(assets, batch, skeleton, transform.rot, pos);
         }
     }
 }

src/objects/rigging.cpp

@@ -1,14 +1,14 @@
 #include "rigging.hpp"
 
+#include <glm/ext/matrix_transform.hpp>
+#include <glm/gtx/matrix_decompose.hpp>
+
 #include "assets/Assets.hpp"
 #include "coders/json.hpp"
 #include "data/dv_util.hpp"
 #include "graphics/commons/Model.hpp"
 #include "graphics/render/ModelBatch.hpp"
 
-#include <glm/ext/matrix_transform.hpp>
-#include <glm/gtx/matrix_decompose.hpp>
-
 using namespace rigging;
 
 void ModelReference::refresh(const Assets& assets) {
@@ -122,21 +122,26 @@ size_t SkeletonConfig::update(
     return count;
 }
 
+static glm::mat4 build_matrix(const glm::mat3& rot, const glm::vec3& pos) {
+    glm::mat4 combined(1.0f);
+    combined = glm::translate(combined, pos);
+    combined = combined * glm::mat4(rot);
+    return combined;
+}
+
 void SkeletonConfig::update(
-    Skeleton& skeleton, const glm::mat4& matrix, const glm::vec3& position
+    Skeleton& skeleton, const glm::mat3& rotation, const glm::vec3& position
 ) const {
     if (skeleton.interpolation.isEnabled()) {
         const auto& interpolation = skeleton.interpolation;
-        glm::vec3 scale, translation, skew;
-        glm::quat rotation;
-        glm::vec4 perspective;
-        glm::decompose(matrix, scale, rotation, translation, skew, perspective);
-
-        auto delta = interpolation.getCurrent() - position;
-        auto interpolatedMatrix = glm::translate(matrix, delta);
-        update(0, skeleton, root.get(), interpolatedMatrix);
+        update(
+            0,
+            skeleton,
+            root.get(),
+            build_matrix(rotation, interpolation.getCurrent())
+        );
     } else {
-        update(0, skeleton, root.get(), matrix);
+        update(0, skeleton, root.get(), rotation);
     }
 }
 
@@ -144,10 +149,10 @@ void SkeletonConfig::render(
     const Assets& assets,
     ModelBatch& batch,
     Skeleton& skeleton,
-    const glm::mat4& matrix,
+    const glm::mat3& rotation,
     const glm::vec3& position
 ) const {
-    update(skeleton, matrix, position);
+    update(skeleton, rotation, position);
 
     if (!skeleton.visible) {
         return;

src/objects/rigging.hpp

@@ -120,7 +120,7 @@ namespace rigging {
 
         void update(
             Skeleton& skeleton,
-            const glm::mat4& matrix,
+            const glm::mat3& rotation,
             const glm::vec3& position
         ) const;
 
@@ -128,7 +128,7 @@ namespace rigging {
             const Assets& assets,
             ModelBatch& batch,
             Skeleton& skeleton,
-            const glm::mat4& matrix,
+            const glm::mat3& rotation,
             const glm::vec3& position
         ) const;