Events

Basic overview of the event system in Blazr

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Different types of events

Events in Blazr are separated into 3 different types. All these events are derived from the base class Event which is an abstract class and can not be instantiated. The class provides 5 different functions which all the derivative events should implement. This also enables users to create their own events if they so desire. The functions provided are:

  virtual EventType getEventType() const = 0;
  virtual int getCategoryFlags() const = 0;
  inline bool isInCategory(EventCategory category) {
    return getCategoryFlags() & category;
  }

  // Only for debugging
  virtual std::string toString() const { return getName(); }
  virtual const char *getName() const = 0;

The different event types are:

• Application Events
• Key Events
• Mouse Events

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Application Events

Events of this type are related to the application behavior. Currently implemented:

• WindowResizeEvent
• WindowCloseEvent
• AppTickEvent
• AppUpdateEvent
• AppRenderEvent

Key Events

Events of this type are used to create events when a keyboard button has been pressed or released. The provided events are:

• KeyPressedEvent
• KeyReleasedEvent

For different key codes, please refer to: Key Codes

Mouse Events

Events of this type are used to create events for mouse actions, such as a mouse button being pressed, released, the mouse being moved, as well as scrolling. The events provided are:

• MouseButtonPressedEvent
• MouseButtonReleasedEvent
• MouseMovedEvent
• MouseScrolledEvnt

For different mouse button codes, please refer to: Mouse Codes