Started events abstraction and classes

bakara/src/bakara/events/app_event.h

@@ -5,16 +5,25 @@
 namespace Bk {
     class AppTickEvent : public Event 
     {
+        AppTickEvent() = default;
 
-    }   
+        EVENT_CLASS_TYPE(AppTick)
+        EVENT_CLASS_CATEGORY(AppEvent)
+    };   
 
     class AppRenderEvent : public Event 
     {
+        AppRenderEvent() = default;
 
-    }
+        EVENT_CLASS_TYPE(AppRender)
+        EVENT_CLASS_CATEGORY(AppEvent)
+    };
 
     class AppUpdateEvent : public Event 
     {
+        AppUpdateEvent() = default;
 
-    }
+        EVENT_CLASS_TYPE(AppUpdate)
+        EVENT_CLASS_CATEGORY(AppEvent)
+    };
 }

bakara/src/bakara/events/event.cpp

@@ -1,24 +0,0 @@
-#include "event.h"
-
-namespace Bk {
-    EventDispatcher::EventDispatcher(Event& event) 
-    {
-        p_event = event;
-    }
-
-    bool ventDispatcher::Dispatch(const F& func)
-    {
-        if (p_event.GetEventType() == T::GetStaticType())
-        {
-            p_event.handled |= func(static_cast<T&>(p_event));
-            return true;
-        }
-        return false;
-    }
-
-    inline std::ostream& operator<<(std::ostream& os, Event& e)  
-    {
-        return os << e.ToString();
-    }
-
-}

bakara/src/bakara/events/event.h

@@ -1,6 +1,8 @@
 #pragma once
 
-#include <bakara/math/base.h>
+#include <bakara/core/base.h>
+#include <bkpch.h>
+#include <bakara/core/string_fmt.h>
 
 namespace Bk {
     enum class EventType 
@@ -33,11 +35,13 @@ namespace Bk {
         MouseButtonEvent = BIT_SHIFT(4)
     };
 
-    #define EVENT_CLASS_TYPE(type) static EventType GetStaticType() { return EventType::type; }\
+    #define EVENT_CLASS_TYPE(type) static EventType get_static_type() { return EventType::type; }\
-								virtual EventType GetEventType() const override { return GetStaticType(); }\
+								virtual EventType get_event_type() const override { return get_static_type(); }\
-								virtual const char* GetName() const override { return #type; }
+								virtual const char* get_name() const override { return #type; }
 
-    #define EVENT_CLASS_CATEGORY(category) virtual int GetCategoryFlags() const override { return category; }
+    #define EVENT_CLASS_CATEGORY(category) virtual int get_category_flags() const override { return (int)EventCategory::category; }
+
+    #define EVENT_STRINGIFY(str, ...) std::string to_string() const override { return format(str, __VA_ARGS__); }
 
     class Event 
     {
@@ -46,27 +50,40 @@ namespace Bk {
 
             bool handled = false;
 
-            virtual EventType GetEventType() const = 0;
+            virtual EventType get_event_type() const = 0;
-            virtual const char* GetName() const = 0;
+            virtual const char* get_name() const = 0;
-            virtual int GetCategoryFlags() const = 0;
+            virtual int get_category_flags() const = 0;
-            virtual std::string ToString() const { return GetName(); }
+            
+            virtual std::string to_string() const { return get_name(); }
 
-            bool IsInCategory(EventCategory category)
+            bool is_in_category(EventCategory category)
             {
-                return GetCategoryFlags() & (int)category == GetCategoryFlags();
+                return get_category_flags() & (int)category == get_category_flags();
             }
     };
-    inline std::ostream& operator<<(std::ostream& os, Event& e);
 
+    inline std::ostream& operator<<(std::ostream& os, Event& e)  
+    {
+        return os << e.to_string();
+    }
 
 	class EventDispatcher
 	{
         public:
-            EventDispatcher(Event& event);
+            EventDispatcher(Event& event)
+            : p_event(event) {}
             
             // F will be deduced by the compiler
             template<typename T, typename F>
-            bool Dispatch(const F& func);
+            bool dispatch(const F& func)
+            {
+                if (p_event.get_event_type() == T::get_static_type())
+                {
+                    p_event.handled |= func(static_cast<T&>(p_event));
+                    return true;
+                }
+                return false;
+            }
         private:
             Event& p_event;
 	};

bakara/src/bakara/events/key_event.h

@@ -0,0 +1,59 @@
+#pragma once
+
+
+#include <bakara/core/key_codes.h>
+#include "event.h"
+
+namespace Bk {
+    class KeyEvent : public Event 
+    {
+        public:
+            KeyCode get_key() const { return m_key; }
+
+            EVENT_CLASS_CATEGORY(KeyboardEvent)
+
+        protected: 
+            KeyEvent(const KeyCode key)
+            : m_key(key) {}
+
+            KeyCode m_key;
+    };   
+
+    class KeyPressEvent : public KeyEvent 
+    {
+        public:
+            KeyPressEvent(KeyCode key, bool is_repeated = false)
+            : KeyEvent(key), p_is_repeated(is_repeated) {}
+
+            EVENT_CLASS_TYPE(KeyPress)
+
+            EVENT_STRINGIFY("KeyPressEvent: %d repeat : %b", m_key, p_is_repeated)
+
+            bool is_repeated() { return p_is_repeated; }
+
+        private: 
+            bool p_is_repeated;
+    };
+
+    class KeyReleaseEvent : public KeyEvent 
+    {
+        public:
+            KeyReleaseEvent(KeyCode key)
+            : KeyEvent(key) {}
+
+            EVENT_CLASS_TYPE(KeyRelease)
+
+            EVENT_STRINGIFY("KeyReleaseEvent: %d", m_key)
+    };
+
+    class KeyTypedEvent : public KeyEvent
+	{
+	public:
+		KeyTypedEvent(const KeyCode keycode)
+		: KeyEvent(keycode) {}
+
+		EVENT_CLASS_TYPE(KeyTyped)
+
+        EVENT_STRINGIFY("KeyTypedEvent: %d", m_key)
+	};
+}

bakara/src/bakara/events/window_event.h

@@ -1,30 +1,34 @@
-pragma once
+#pragma once
 
+#include <bkpch.h>
+#include <format>
 #include "event.h"
 
 namespace Bk {
     class WindowResizeEvent : public Event 
     {
+        public:
+            WindowResizeEvent(uint width, uint height)
+            : p_width(width), p_height(height) {};
 
-    }   
+            uint get_width() const { return p_width; }
+            uint get_height() const { return p_height; }
 
-    class WindowCloseEvent : public Event 
+            EVENT_STRINGIFY("WindowResizeEvent : %d %d", p_width, p_height)
-    {
 
-    }
+            EVENT_CLASS_TYPE(WindowResize)
+            EVENT_CLASS_CATEGORY(AppEvent)
 
-    class WindowFocusEvent : public Event 
+        private: 
-    {
+            uint p_width;
-        
+            uint p_height;
-    }
+    };  
 
-    class WindowLostFocusEvent : public Event 
+    class WindowCloseEvent : public Event 
-    {
-
-    }
-
-    class WindowMoveEvent : public Event 
     {
+        WindowCloseEvent() = default;
 
-    }
+        EVENT_CLASS_TYPE(WindowClose)
+        EVENT_CLASS_CATEGORY(AppEvent)
+    };
 }

sandbox/src/sandbox.cpp

@@ -8,7 +8,9 @@ class Sandbox : public Bk::Application
     public:
         Sandbox() 
         {
-            
+            auto event = Bk::WindowResizeEvent(120, 120);
+            auto key_event = Bk::KeyPressEvent(Bk::Key::A);
+            std::cout << event.to_string() << "\n" << key_event.to_string() << "\n";
         }
 
         ~Sandbox()