// +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
// +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
// ++++
// ++++ get the index field
/// ++++
// +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
// +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
int SelectIdx::getIndexField(int &numElem, char *&selArr)
{
int i;
/// create selection array from index and selection
coDoIntArr *idx = dynamic_cast<coDoIntArr *>(p_index->getCurrentObject());
if (!idx)
{
sendError("Could not open Object at index field port");
return STOP_PIPELINE;
}
numElem = idx->get_dim(0); // get 1st field size
selArr = new char[numElem];
int *idxField = idx->getAddress();
// create a restarint construct
coRestraint restraint;
restraint.add(p_selection->getValue());
// mark all selected elements true, all others false
for (i = 0; i < numElem; i++)
if (restraint(idxField[i]))
selArr[i] = 1;
else
selArr[i] = 0;
return SUCCESS;
}
/*
* The `main loop' of the game abstracted so we can use it for other things
* while still keeping our timesteps synchronous. Mix & Match whichever
* functions that will be called at the major steps to achieve cool things.
*
* Accepts NULL for every argument except the restraint.
*/
void
main_loop(struct Game *game,
void (*level)(struct Game *),
void (*update)(struct Game *),
void (*display)(struct Game *),
void (*restraint)(struct Game *, bool *))
{
bool looping = true;
while (game->running && looping) {
game->current_time = (long int) SDL_GetTicks();
/* make sure our input state is constantly updated & able to quit anytime */
while (SDL_PollEvent(&game->event)){
switch (game->event.type) {
case SDL_KEYDOWN:
switch(game->event.key.keysym.sym) {
case SDLK_ESCAPE: case SDL_QUIT:
game->running = false;
}
}
}
/* handle level information if needed */
if (level) {
level(game);
}
/* update the the game every 30 frames */
if (game->current_time - game->frame_time > THIRTY_FPS) {
game->frame_time = game->current_time;
if (update) {
update(game);
}
}
/* set up the display for drawing */
set_display();
/* draw the player, stars, and asteroids */
display_essentials(game);
/* draw whatever else if something was provided */
if (display) {
display(game);
}
render(&game->graphics);
/* stop whatever loop we're in (animation, replaying, or the game loop) */
restraint(game, &looping);
}
}
