fix camera movement

src/main.cpp

@@ -244,24 +244,24 @@ class VulkanApp {
 
   struct Camera {
     glm::dvec3 position;
-    glm::dvec3 front;
     glm::dvec3 up;
-    f64        speed {};
+    glm::dvec3 look_at;
+    f64        speed {1.0};
 
-    Camera() : position(2.0, 2.0, 2.0), front(0.0, 0.0, 0.0), up(0.0, 0.0, 1.0) {}
+    Camera() : position(2.0, 2.0, 2.0), up(0.0, 0.0, 1.0), look_at(0.0) {}
 
-    [[nodiscard]] fn getViewMatrix() const -> glm::mat4 { return glm::lookAt(position, front, up); }
+    [[nodiscard]] fn getViewMatrix() const -> glm::mat4 { return glm::lookAt(position, look_at, up); }
 
-    fn moveForward(f64 deltaTime) -> void { position += speed * front * deltaTime; }
+    fn moveForward(f64 deltaTime) -> void { position += (look_at - position) * speed * deltaTime; }
 
-    fn moveBackward(f64 deltaTime) -> void { position -= speed * front * deltaTime; }
+    fn moveBackward(f64 deltaTime) -> void { position -= (look_at - position) * speed * deltaTime; }
 
     fn moveLeft(f64 deltaTime) -> void {
-      position -= glm::normalize(glm::cross(front, up)) * speed * deltaTime;
+      position -= glm::normalize(glm::cross((look_at - position), up)) * speed * deltaTime;
     }
 
     fn moveRight(f64 deltaTime) -> void {
-      position += glm::normalize(glm::cross(front, up)) * speed * deltaTime;
+      position += glm::normalize(glm::cross((look_at - position), up)) * speed * deltaTime;
     }
   };
 

src/util/shaders.hpp

@@ -50,7 +50,7 @@ class ShaderCompiler {
       throw runtime_error("Shader compilation failed for: " + shaderName);
 
     // Cache the compiled SPIR-V binary
-    saveCompiledShader(spirvCode, cacheFile);
+    saveCompiledShader(spirvCode, cacheFile.string());
     return spirvCode;
   }
 

src/util/unique_image.hpp

@@ -19,7 +19,7 @@ namespace stb {
      *
      * @param path The filesystem path to the image file to load.
      */
-    UniqueImage(const std::filesystem::path& path) { load(path.c_str()); }
+    UniqueImage(const std::filesystem::path& path) { load(path.string().c_str()); }
 
     // Deleted copy constructor to prevent copying.
     UniqueImage(const UniqueImage&) = delete;