map keys and handle key events on Android and OS X

engine/event.h

@@ -0,0 +1,64 @@
+#pragma once
+
+enum class kKey : uint8_t
+{
+    Unknown,
+    AndroidVolumeUp,
+    AndroidVolumeDown,
+    AndroidHome,
+    KeySpacebar,
+    KeyE,
+};
+
+enum class kEventResult : uint8_t
+{
+    Consumed,
+    Available,
+};
+
+enum class kEventCategory : uint8_t
+{
+    MouseEvent,
+    KeyEvent,
+    ButtonEvent,
+};
+
+enum class kEventType : uint8_t
+{
+    MouseDownL,
+    MouseDownR,
+    MouseMove,
+    MouseUpL,
+    MouseUpR,
+    MouseEnter,
+    MouseLeave,
+    MouseScroll,
+    KeyDown,
+    KeyUp,
+    KeyChar,
+    ButtonDown,
+    ButtonUp,
+};
+
+class Event
+{
+public:
+    kEventCategory m_cat;
+    kEventType m_type;
+};
+
+class MouseEvent : public Event
+{
+public:
+    MouseEvent() { m_cat = kEventCategory::MouseEvent; }
+    glm::vec2 m_pos;
+    float m_scroll_delta;
+};
+
+class KeyEvent : public Event
+{
+public:
+    KeyEvent() { m_cat = kEventCategory::KeyEvent; }
+    kKey m_key;
+    char m_char;
+};