backImage |
- ( SpriteImage *) backImage;
Returns the image used as a background (used to clear the back buffer after each frame).
bufImage |
- ( SpriteImage *) bufImage;
Returns the image used as a back buffer. Sprites render themselves onto this image and then it is displayed on the screen on each frame update.
destroyImage: |
- ( void ) destroyImage: (SpriteImage *) si;
Destroys the data associated with the SpriteImage si. Does not free the structure itself.
dispatchEvents |
- ( id ) dispatchEvents;
Gets any pending events from the windowing system's event queue, and sends them as messages back to the host SpriteApp object, which then invokes its handlers for the events.
free |
- free;
Releases the IODelegate object.
getTimeMillis |
- ( unsigned int ) getTimeMillis;
Gets the time since the application started in milliseconds. For a 32-bit unsigned int, this value will wrap around once every 49.7 days.
loadPPMFile:toImage: |
- ( int ) loadPPMFile: (char *) fn toImage: (SpriteImage *) si;
Loads a PPM file given by filename fn; converts it into a SpriteImage suitable for rendering on the back buffer, and stores the data in the structure pointed to by si.
lockAndClearBuf |
- ( void ) lockAndClearBuf;
Locks the backbuffer image so that it may be drawn upon, and overwrites it with the background image.
lockBuf |
- ( void ) lockBuf;
Locks the backbuffer image so that it may be drawn upon.
refreshScreen |
- ( void ) refreshScreen;
Write back buffer image to screen.
unlockBuf |
- ( void ) unlockBuf;
Unlocks the backbuffer image after a previous call to lockBuf.
(Last Updated 7/27/2005)