Merge pull request #978 from MihailRis/entity-lighting-mode

add 'lighting-mode' entity property

doc/en/entity-properties.md

@@ -127,6 +127,11 @@ Defines the entity's material (same as for blocks).
 
 The default value is the same as the entity name. Determines which skeleton will be used by the entity. See [rigging](rigging.md).
 
+### *lighting-mode*
+
+- *bone-based* - lighting is calculated for each skeletal bone separately.
+- *solid* - lighting is calculated for the entire entity.
+
 ## Saving/Loading
 
 In addition to custom components, the engine automatically saves data from the built-in ones: transform, rigidbody, skeleton.

doc/ru/entity-properties.md

@@ -127,6 +127,11 @@
 
 Значение по-умолчанию совпадает с именем сущности. Определяет то, какой скелет будет использоваться сущностью. См. [риггинг](rigging.md).
 
+### Тип освещения - *lighting-mode*
+
+- *bone-based* - освещение рассчитывается для каждой кости скелета отдельно.
+- *solid* - освещение рассчитывается для всей сущности в целом.
+
 ## Сохранение/загрузка
 
 Кроме данных пользовательских компонентов, движок автоматически сохраняет данные встроенных: transform, rigidbody, skeleton.

src/animation/rigging.cpp

@@ -177,6 +177,7 @@ void SkeletonConfig::render(
     const Assets& assets,
     ModelBatch& batch,
     Skeleton& skeleton,
+    ModelLightingMode lightingMode,
     const glm::mat3& rotation,
     const glm::vec3& position,
     const glm::vec3& scale
@@ -203,16 +204,24 @@ void SkeletonConfig::render(
         if (auto foundOverride = modelOverride.model.lock()) {
             model = foundOverride.get();
         }
-        if (model) {
-            batch.draw(
-                skeleton.calculated.matrices[i],
-                skeleton.tint * skeleton.boneTints[i],
-                model,
-                &skeleton.textures
-            );
-        } else if (!node->model.name.empty()) {
-            node->model.updateFlag = true;
-        } 
+        if (model == nullptr) {
+            if (!node->model.name.empty()) {
+                node->model.updateFlag = true;
+            } 
+            continue;
+        }
+        batch.draw(
+            skeleton.calculated.matrices[i],
+            skeleton.tint * skeleton.boneTints[i],
+            lightingMode == ModelLightingMode::SOLID
+                ? position - glm::vec3(
+                      skeleton.calculated.matrices[i] *
+                      glm::vec4(0.0f, 0.0f, 0.0f, 1.0f)
+                  )
+                : glm::vec3(),
+            model,
+            &skeleton.textures
+        );
     }
 }
 

src/animation/rigging.hpp

@@ -11,6 +11,7 @@
 #include "typedefs.hpp"
 #include "data/dv_fwd.hpp"
 #include "util/Interpolation.hpp"
+#include "util/EnumMetadata.hpp"
 
 class Assets;
 class ModelBatch;
@@ -19,6 +20,16 @@ namespace model {
     struct Model;
 }
 
+enum class ModelLightingMode {
+    BONE_BASED,
+    SOLID,
+};
+
+VC_ENUM_METADATA(ModelLightingMode)
+    {"bone-based", ModelLightingMode::BONE_BASED},
+    {"solid", ModelLightingMode::SOLID},
+VC_ENUM_END
+
 namespace rigging {
     struct Skeleton;
     class SkeletonConfig;
@@ -132,6 +143,7 @@ namespace rigging {
             const Assets& assets,
             ModelBatch& batch,
             Skeleton& skeleton,
+            ModelLightingMode lightingMode,
             const glm::mat3& rotation,
             const glm::vec3& position,
             const glm::vec3& scale

src/content/loading/EntityLoader.cpp

@@ -94,4 +94,8 @@ template<> void ContentUnitLoader<EntityDef>::loadUnit(
     root.at("mass").get(def.mass);
     root.at("elasticity").get(def.elasticity);
     root.at("step-height").get(def.stepHeight);
+    
+    std::string lightingModeName;
+    root.at("lighting-mode").get(lightingModeName);
+    ModelLightingModeMeta.getItem(lightingModeName, def.lightingMode);
 }

src/graphics/render/HandsRenderer.cpp

@@ -30,6 +30,7 @@ void HandsRenderer::render(const Camera& camera) {
         assets,
         modelBatch,
         skeleton,
+        ModelLightingMode::SOLID,
         glm::mat3(1.0f),
         glm::vec3(),
         glm::vec3(1.0f)

src/graphics/render/ModelBatch.cpp

@@ -100,13 +100,18 @@ void ModelBatch::draw(
 void ModelBatch::draw(
     const glm::mat4& matrix,
     const glm::vec4& tint,
+    const glm::vec3& lightSampleOffset,
     const model::Model* model,
     const TextureNamesMap* varTextures
 ) {
     for (const auto& mesh : model->meshes) {
-        entries.push_back({
-            matrix, extract_rotation(matrix), tint, &mesh, varTextures
-        });
+        entries.push_back(DrawEntry {
+            matrix,
+            extract_rotation(matrix),
+            tint,
+            lightSampleOffset,
+            &mesh,
+            varTextures});
     }
 }
 
@@ -118,6 +123,7 @@ void ModelBatch::render() {
     );
     bool backlight = settings.graphics.backlight.get();
     for (auto& entry : entries) {
+        setLightsOffset(entry.lightSampleOffset);
         draw(
             *entry.mesh,
             entry.matrix,
@@ -126,6 +132,7 @@ void ModelBatch::render() {
             entry.varTextures,
             backlight
         );
+        setLightsOffset(glm::vec3());
     }
     batch->flush();
     entries.clear();

src/graphics/render/ModelBatch.hpp

@@ -33,6 +33,7 @@ public:
     void draw(
         const glm::mat4& matrix,
         const glm::vec4& tint,
+        const glm::vec3& lightSampleOffset,
         const model::Model* model,
         const TextureNamesMap* varTextures
     );
@@ -66,6 +67,7 @@ private:
         glm::mat4 matrix;
         glm::mat3 rotation;
         glm::vec4 tint;
+        glm::vec3 lightSampleOffset;
         const model::Mesh* mesh;
         const TextureNamesMap* varTextures;
     };

src/objects/Entities.cpp

@@ -482,6 +482,7 @@ void Entities::render(
         if (eid.uid == fpsEntity) {
             continue;
         }
+        const auto& def = eid.def;
         const auto& pos = transform.pos;
         const auto& size = transform.size;
         if (frustum && !frustum->isBoxVisible(pos - size, pos + size)) {
@@ -491,7 +492,13 @@ void Entities::render(
         const auto& rigConfig = skeleton.config;
         if (rigConfig) {
             rigConfig->render(
-                assets, batch, skeleton, transform.rot, pos, size
+                assets,
+                batch,
+                skeleton,
+                def.lightingMode,
+                transform.rot,
+                pos,
+                size
             );
         }
     }

src/objects/EntityDef.cpp

@@ -14,4 +14,5 @@ void EntityDef::cloneTo(EntityDef& dst) {
     dst.elasticity = elasticity;
     dst.stepHeight = stepHeight;
     dst.save = save;
+    dst.lightingMode = lightingMode;
 }

src/objects/EntityDef.hpp

@@ -8,10 +8,7 @@
 #include "data/dv.hpp"
 #include "maths/aabb.hpp"
 #include "physics/Hitbox.hpp"
-
-namespace rigging {
-    class SkeletonConfig;
-}
+#include "animation/rigging.hpp"
 
 struct ComponentInstance {
     std::string component;
@@ -42,6 +39,9 @@ struct EntityDef {
     /// @brief Solid entity material material
     std::string material;
 
+    /// @brief Model lighting mode
+    ModelLightingMode lightingMode = ModelLightingMode::BONE_BASED;
+
     /// @brief Can the entity be interacted with cursor (on_attack, on_use)
     bool selectable = true;