feat: Add Camera component / Add cooked model and texture loading

destrum/include/destrum/Assets/AssetManager.h

@@ -28,6 +28,10 @@ public:
 
 private:
     AssetManager() = default;
+
+    [[nodiscard]] ModelDoc::ModelAsset LoadCookedOrImport(
+        const std::string& reference,
+        const ModelDoc::LoadOptions& options) const;
 };
 
 #endif // DESTRUM_ASSETMANAGER_H

destrum/include/destrum/Assets/ModelFile.h

@@ -3,6 +3,7 @@
 
 #include <cstdint>
 #include <filesystem>
+#include <optional>
 #include <span>
 #include <string_view>
 #include <vector>
@@ -13,11 +14,18 @@ namespace ModelFile {
     inline constexpr std::uint32_t Version = 1;
     inline constexpr std::string_view Extension = ".dmodel";
 
+    inline constexpr ModelDoc::LoadOptions CookOptions{};
+
+    [[nodiscard]] bool SupportsLoadOptions(const ModelDoc::ModelAsset& model, const ModelDoc::LoadOptions& options);
+    void ApplyLoadOptions(ModelDoc::ModelAsset& model, const ModelDoc::LoadOptions& options);
+
     [[nodiscard]] std::vector<std::uint8_t> Write(const ModelDoc::ModelAsset& model);
     [[nodiscard]] ModelDoc::ModelAsset Read(std::span<const std::uint8_t> bytes);
 
     void WriteToFile(const ModelDoc::ModelAsset& model, const std::filesystem::path& path);
     [[nodiscard]] ModelDoc::ModelAsset ReadFromFile(const std::filesystem::path& path);
+
+    [[nodiscard]] std::optional<std::uint32_t> ReadVersionFromFile(const std::filesystem::path& path);
 }
 
 #endif // DESTRUM_MODELFILE_H

destrum/include/destrum/Assets/TextureFile.h

@@ -0,0 +1,38 @@
+#ifndef DESTRUM_TEXTUREFILE_H
+#define DESTRUM_TEXTUREFILE_H
+
+#include <cstdint>
+#include <filesystem>
+#include <optional>
+#include <span>
+#include <string_view>
+#include <vector>
+
+namespace TextureFile {
+    inline constexpr std::uint32_t Version = 1;
+    inline constexpr std::string_view Extension = ".dtex";
+
+    enum class PixelFormat : std::uint32_t {
+        RGBA16Float,
+    };
+
+    struct Texture {
+        std::uint32_t width{0};
+        std::uint32_t height{0};
+        PixelFormat format{PixelFormat::RGBA16Float};
+        std::vector<std::uint8_t> pixels;
+    };
+
+    [[nodiscard]] std::size_t BytesPerPixel(PixelFormat format);
+
+    [[nodiscard]] Texture FromRGBA32Float(std::uint32_t width, std::uint32_t height, std::span<const float> rgba);
+
+    [[nodiscard]] std::vector<std::uint8_t> Write(const Texture& texture);
+    [[nodiscard]] Texture Read(std::span<const std::uint8_t> bytes);
+
+    void WriteToFile(const Texture& texture, const std::filesystem::path& path);
+    [[nodiscard]] Texture ReadFromFile(const std::filesystem::path& path);
+    [[nodiscard]] std::optional<std::uint32_t> ReadVersionFromFile(const std::filesystem::path& path);
+}
+
+#endif // DESTRUM_TEXTUREFILE_H

destrum/include/destrum/Components/CameraComponent.h

@@ -0,0 +1,44 @@
+#ifndef CAMERACOMPONENT_H
+#define CAMERACOMPONENT_H
+
+#include <destrum/ObjectModel/Component.h>
+#include <destrum/Graphics/Camera.h>
+
+#include <glm/glm.hpp>
+
+class CameraComponent final : public Component {
+public:
+    explicit CameraComponent(GameObject& parent);
+
+    CameraComponent(const CameraComponent& other) = delete;
+    CameraComponent(CameraComponent&& other) noexcept = delete;
+    CameraComponent& operator=(const CameraComponent& other) = delete;
+    CameraComponent& operator=(CameraComponent&& other) noexcept = delete;
+
+    std::string GetTypeName() const override { return "CameraComponent"; }
+
+    nlohmann::json Serialize() const override;
+    void Deserialize(const nlohmann::json& data) override;
+    void ImGuiInspector() override;
+
+    // Places the camera at this object's world transform, looking down its local -Z.
+    [[nodiscard]] Camera& GetCamera(float aspectRatio);
+
+    void SetFieldOfView(float fovDegrees);
+    [[nodiscard]] float GetFieldOfView() const { return m_FieldOfView; }
+
+    void SetClipPlanes(float zNear, float zFar);
+    [[nodiscard]] float GetZNear() const { return m_ZNear; }
+    [[nodiscard]] float GetZFar() const { return m_ZFar; }
+
+    void MakeCurrent();
+    [[nodiscard]] bool IsCurrent() const;
+
+private:
+    Camera m_Camera{glm::vec3{0.0f}, glm::vec3{0.0f, 1.0f, 0.0f}};
+    float m_FieldOfView{90.0f};
+    float m_ZNear{0.01f};
+    float m_ZFar{1000.0f};
+};
+
+#endif // CAMERACOMPONENT_H

destrum/include/destrum/Graphics/Camera.h

@@ -101,6 +101,7 @@ public:
     float GetZFar() const { return m_zFar; }
     void SetZFar(float zFar) { m_zFar = zFar; }
     float GetFOVY() const { return fovAngle; }
+    void SetFOVY(float fovDegrees) { fovAngle = fovDegrees; }
     float GetAspectRatio() const { return m_aspectRatio; }
 
     glm::vec3 m_position{2.f, 0, 0};
@@ -127,6 +128,7 @@ public:
 
     void SetRotation(float yawRadians, float pitchRadians);
     void SetRotation(const glm::vec2& yawPitchRadians);
+    void SetOrientation(const glm::vec3& forward, const glm::vec3& up);
 
     float GetYaw() const { return m_yaw; }
     float GetPitch() const { return m_pitch; }

destrum/include/destrum/Graphics/imageLoader.h

@@ -3,6 +3,7 @@
 
 #include <filesystem>
 #include <cstddef>
+#include <vector>
 #include <vulkan/vulkan.h>
 
 #include "destrum/Graphics/TextureIntent.h"
@@ -19,11 +20,12 @@ struct ImageData {
         if (this == &o) return *this;
 
         // free current contents first
-        this->~ImageData();
+        freePixels();
 
         // steal
         pixels         = o.pixels;
         hdrPixels      = o.hdrPixels;
+        cookedPixels   = std::move(o.cookedPixels);
         hdr            = o.hdr;
         width          = o.width;
         height         = o.height;
@@ -50,8 +52,11 @@ struct ImageData {
     ImageData(const ImageData&) = delete;
     ImageData& operator=(const ImageData&) = delete;
 
+    void freePixels();
+
     unsigned char* pixels{nullptr};
     float* hdrPixels{nullptr};
+    std::vector<unsigned char> cookedPixels; // owns `pixels` for cooked textures
     bool hdr{false};
 
     int width{0};

destrum/include/destrum/Scene/Scene.h

@@ -12,6 +12,7 @@
 #include "destrum/Physics/JoltPhysicsWorld.h"
 #include "destrum/Physics/PhysicsSceneBridge.h"
 
+class CameraComponent;
 class GameObject;
 class SceneSerializer;
 class PhysicsWorld;
@@ -105,6 +106,10 @@ public:
     Event<> OnSceneLoaded;
 
     PhysicsSceneBridge& GetPhysics() { return m_Physics; }
+
+    [[nodiscard]] CameraComponent* GetCurrentCamera() const;
+    [[nodiscard]] std::vector<CameraComponent*> GetCameras() const;
+    void SetCurrentCamera(const CameraComponent* camera);
 private:
     explicit Scene(const std::string& name);
     explicit Scene(const std::string& name, std::unique_ptr<PhysicsWorld> physicsWorld);
@@ -127,6 +132,8 @@ private:
     bool m_ShowDemoWindow{false};
     ObjectId m_SelectedObjectId{InvalidObjectId};
 
+    ObjectId m_CurrentCameraId{InvalidObjectId};
+
     std::function<void()> m_registerBindings;
     std::function<void()> m_unregisterBindings;
     bool m_bindingsUnloaded{false};

destrum/include/destrum/Serialization/EngineComponentList.h

@@ -2,6 +2,7 @@
 #define DESTRUM_ENGINECOMPONENTLIST_H
 
 #include <destrum/Components/Animator.h>
+#include <destrum/Components/CameraComponent.h>
 #include <destrum/Components/LightComponent.h>
 #include <destrum/Components/MeshRendererComponent.h>
 #include <destrum/Components/OrbitAndSpin.h>
@@ -15,6 +16,7 @@
 #define DESTRUM_ENGINE_COMPONENTS(X) \
     X(MeshRendererComponent) \
     X(LightComponent) \
+    X(CameraComponent) \
     X(Rotator) \
     X(Spinner) \
     X(OrbitAndSpin) \

destrum/include/destrum/Util/ImGuiUtils.h

@@ -1,6 +1,7 @@
 #ifndef DESTRUM_IMGUIUTILS_H
 #define DESTRUM_IMGUIUTILS_H
 
+#include <functional>
 #include <memory>
 #include <string_view>
 #include <vector>
@@ -22,6 +23,7 @@ namespace ImGuiUtils {
         const std::vector<std::shared_ptr<GameObject>>& objects,
         const std::vector<std::shared_ptr<GameObject>>& pendingAdditions,
         ObjectId& selectedObjectId,
+        const std::function<GameObject*()>& createGameObject,
         bool* open = nullptr);
 }