Add nativescript component, camera controller

inferno/src/inferno/scene/components.h

@@ -3,12 +3,15 @@
 
 #include <memory>     // std::shared_ptr
 #include <string>     // std::string
+#include <functional> // std::function
 
 #include "glm/ext/matrix_float4x4.hpp" // glm::mat4
 #include "glm/ext/vector_float3.hpp"   // glm::vec3
 
+#include "inferno/assertions.h"
 #include "inferno/log.h"
 #include "inferno/render/texture.h"
+#include "inferno/script/nativescript.h"
 
 namespace Inferno {
 
@@ -51,10 +54,28 @@ namespace Inferno {
 	};
 
 	struct SpriteComponent {
-		glm::vec4 color;
+		glm::vec4 color { 1.0f };
 		std::shared_ptr<Texture> texture;
 	};
 
+	struct NativeScriptComponent {
+		NativeScript* instance = nullptr;
+
+		std::function<void()> initialize = nullptr;
+		std::function<void()> destroy = nullptr;
+
+		// Dont allow manually setting instance during construction
+		NativeScriptComponent() {}
+
+		template<typename T>
+		void bind()
+		{
+			ASSERT(initialize == nullptr && destroy == nullptr, "NativeScript already bound");
+			initialize = [&]() { instance = static_cast<NativeScript*>(new T()); };
+			destroy = [&]() { delete instance; instance = nullptr; initialize = nullptr; destroy = nullptr; };
+		}
+	};
+
 // ----------------------------------------
 
 	const LogStream& operator<<(const LogStream& stream, const TransformComponent& value);

inferno/src/inferno/script/cameracontroller.cpp

@@ -0,0 +1,7 @@
+#include "inferno/script/cameracontroller.h"
+
+namespace Inferno {
+
+	//..
+
+}

inferno/src/inferno/script/cameracontroller.h

@@ -0,0 +1,109 @@
+#ifndef CAMERA_CONTROLLER_H
+#define CAMERA_CONTROLLER_H
+
+#define TRANSLATE_SPEED 2.5f
+#define ROTATE_SPEED 90.0f
+#define ZOOM_SENSITIVITY 2.5f
+#define MOUSE_SENSITIVITY 0.25f
+#define NEAR_PLANE 0.1f
+#define FAR_PLANE 100.0f
+
+#include <glm/ext/matrix_clip_space.hpp> // glm::perspective, glm::ortho
+#include <glm/ext/matrix_transform.hpp>  // glm::radians, glm::lookAt
+
+#include "inferno/input.h"
+#include "inferno/inputcodes.h"
+#include "inferno/scene/components.h"
+#include "inferno/script/nativescript.h"
+
+namespace Inferno {
+
+	class CameraController final : public NativeScript {
+	public:
+		CameraController() {}
+		virtual ~CameraController() {}
+
+		virtual void initialize() override
+		{
+		}
+
+		virtual void update(float deltaTime) override
+		{
+			m_camera = &getComponent<CameraComponent>();
+
+			if (m_camera->type == CameraType::Orthographic) {
+				updateOrthographic(deltaTime);
+			}
+			else if (m_camera->type == CameraType::Perspective) {
+				updatePerspective(deltaTime);
+			}
+		}
+
+		void updateOrthographic(float deltaTime)
+		{
+			// Update camera rotation
+
+			float cameraRotateSpeed = ROTATE_SPEED * (1.0f/ 60.0f);
+
+			if (Input::isKeyPressed(KeyCode("GLFW_KEY_Q"))) {
+				transform->rotate.z += cameraRotateSpeed;
+			}
+			if (Input::isKeyPressed(KeyCode("GLFW_KEY_E"))) {
+				transform->rotate.z -= cameraRotateSpeed;
+			}
+
+			if (transform->rotate.z > 180.0f) {
+				transform->rotate.z -= 360.0f;
+			}
+			else if (transform->rotate.z <= -180.0f) {
+				transform->rotate.z += 360.0f;
+			}
+
+			// Update camera translation
+
+			float cameraTranslateSpeed = TRANSLATE_SPEED * deltaTime;
+
+			// WASD movement
+			if (Input::isKeyPressed(KeyCode("GLFW_KEY_W"))) {
+				transform->translate.x += -sin(glm::radians(transform->rotate.z)) * cameraTranslateSpeed;
+				transform->translate.y +=  cos(glm::radians(transform->rotate.z)) * cameraTranslateSpeed;
+			}
+			if (Input::isKeyPressed(KeyCode("GLFW_KEY_S"))) {
+				transform->translate.x -= -sin(glm::radians(transform->rotate.z)) * cameraTranslateSpeed;
+				transform->translate.y -=  cos(glm::radians(transform->rotate.z)) * cameraTranslateSpeed;
+			}
+			if (Input::isKeyPressed(KeyCode("GLFW_KEY_A"))) {
+				transform->translate.x -= cos(glm::radians(transform->rotate.z)) * cameraTranslateSpeed;
+				transform->translate.y -= sin(glm::radians(transform->rotate.z)) * cameraTranslateSpeed;
+			}
+			if (Input::isKeyPressed(KeyCode("GLFW_KEY_D"))) {
+				transform->translate.x += cos(glm::radians(transform->rotate.z)) * cameraTranslateSpeed;
+				transform->translate.y += sin(glm::radians(transform->rotate.z)) * cameraTranslateSpeed;
+			}
+
+			// Update camera zoom
+
+			float zoomSpeed = ZOOM_SENSITIVITY * (1.0f / 60.0f);
+
+			if (Input::isKeyPressed(KeyCode("GLFW_KEY_EQUAL"))) {
+				m_camera->zoomLevel -= zoomSpeed;
+			}
+			if (Input::isKeyPressed(KeyCode("GLFW_KEY_MINUS"))) {
+				m_camera->zoomLevel += zoomSpeed;
+			}
+			m_camera->zoomLevel = std::max(m_camera->zoomLevel, 0.25f);
+			m_camera->zoomLevel = std::min(m_camera->zoomLevel, 10.0f);
+		}
+
+		void updatePerspective(float deltaTime)
+		{
+
+		}
+
+	private:
+		CameraComponent* m_camera;
+	};
+
+}
+
+#endif // CAMERA_CONTROLLER_H

inferno/src/inferno/script/nativescript.h

@@ -0,0 +1,36 @@
+#ifndef NATIVE_SCRIPT_H
+#define NATIVE_SCRIPT_H
+
+#include "inferno/scene/scene.h"
+
+namespace Inferno {
+
+	struct TransformComponent;
+
+	class NativeScript {
+	public:
+		virtual ~NativeScript() {}
+
+	protected:
+		virtual void initialize() {}
+		virtual void destroy() {}
+		virtual void update(float deltaTime) { (void)deltaTime; }
+
+		template<typename T>
+		T& getComponent() const
+		{
+			return m_scene->getComponent<T>(m_entity);
+		}
+
+		TransformComponent* transform = nullptr;
+
+	private:
+		Scene* m_scene = nullptr;
+		uint32_t m_entity = 0;
+
+		friend class ScriptSystem;
+	};
+
+}
+
+#endif // NATIVE_SCRIPT_H