Input Zhaohui Ning Aaron Cardwell Boonthanome Nouanesengsy

Outline Ogre Input Other input toolkits –SDL –OIS –CEGUI

Ogre Input Not supported well Does not support joysticks Inconsistent –Use 0, 1, 2 or a mask to determine mouse button Mouse event in mouseDragged always returns 0

SDL Simple DirectMedia Layer Provides low level access to audio, keyboard, mouse, and video Cross-platform

SDL Input Keyboard Input Mouse Input Joystick Input

Example Code SDL_Event event; while(SDL_PollEvent(&event)) { switch(event.type) { case SDL_KEYDOWN: out<<"Oh! Key press\n"; break; case SDL_MOUSEMOTION: out<<"Mouse Motion\n"; break; case SDL_QUIT: i=-1; break; default: out<<"I don't know what this event is!\n"; }

SDL with Ogre Requires DirectX to compile SDL wants to create its own window Must tell SDL to use the Ogre window

OIS Object Oriented Input System Phillip Castaneda zlib/libpng License MS Windows, Linux

Manual WreckedLibs:OIS:Manual Mouse Keyboard Joystick

Compiling Official ReleaseFFTestErrors.txtFix An OIS InputManager available on Wiki Practical Application - Let's Get Started A working version Basic Tutorial 5

CEGUI CEGUI (Crazy Eddies Graphical User Interface) –Free graphical interface for graphics API’s which do not have or have a lacking graphical interface system –Combines graphical 2D overlaying displays with mouse input interfaces for the user

CEGUI Pro’s –Free for use under LGPL licensing –Already integrated in Ogre3D –Tutorials provided in OgreSDK and Ogre’s Wiki on using CEGUI with Ogre –Good responsive forums –Decent wiki with documentation for CEGUI classes and tutorials

CEGUI Cons –Random “holes” in documentation and tutorials but you can still figure most things out from forums –Large amount of external script files to compose a “Look” and a “scheme” are complicated –.scheme,.lookNfeel,.imageset,.layout

CEGUI Cons (Cont.) –One major con of CEGUI is its problem in slow speed with lots of windows and elements as noticed in the provided ogre + CEGUI sample. –Child windows with lots of events and elements cause a messaging slowdown because of the cascading mouse move events

CEGUI Solution to slowness of many layouts –Be careful and weary of using large CEGUI windows. –Efficiently group smaller child windows to exclude unnecessary checks on mouse enter/exits

CEGUI Features –Easily displayable overlays with a multitude of functionality –Static images, text boxes, buttons –Use of XML to import layouts from a easily changeable file –Build your own layouts into xml files using their “official” layout editor

CEGUI Features of using the editor –Very easy setup of the layout of a graphical display –Tree structure and snap-able grid for layout modification Downfalls of using the editor –No ability to add specific images –Must still manually code in the event function calls –Missing attributes in the editor