/*
* create_automaton
*
* Allocates the memory required for a automaton. It then fills in the state
* and event arrays but does not fill in the transition table or use the csv
* file at all as this is done by a separate function.
*
* We pass in callbacks rather than arrays so that all memory allocation
* regarding this object is done internally to the create function, thus all
* freeing of memory can be done in the destroy function.
*
* Parameters: state_callback - A callback function pointer to a function which
* will create all the state objects and fill them
* in.
* event_callback - A callback function pointer to a function which
* will create all the event objects and fill them
* in.
*
* Returns: A pointer to the newly created memory or NULL on failure.
*/
AUTOMATON *create_automaton(int (*state_callback)(AUTOMATON_STATE ***, int),
int (*event_callback)(AUTOMATON_EVENT ***))
{
/*
* Local Variables
*/
AUTOMATON *automaton;
/*
* Allocate the required memory. Forcing everything to 0 means that we can
* test against NULL when destroying the object even if it is only half
* created.
*/
automaton = (AUTOMATON *) DT_MALLOC(sizeof(AUTOMATON));
memset(automaton, '\0', sizeof(AUTOMATON));
/*
* Make the callback to get the array of events used in this automaton.
*/
automaton->num_events = event_callback(&(automaton->events));
/*
* Make the callback to get the array of states used in this automaton.
*/
automaton->num_states = state_callback(&(automaton->states),
automaton->num_events);
return(automaton);
}
void InputHandler::pollInputs() {
SDL_Event event;
while (SDL_PollEvent(&event)) {
callbacks.top()(event);
}
state_callback();
}
void save_manager::register_postload(save_prepost_delegate func)
{
// check for invalid timing
if (!m_reg_allowed)
fatalerror("Attempt to register callback function after state registration is closed!\n");
// scan for duplicates and push through to the end
for (state_callback *cb = m_postload_list.first(); cb != NULL; cb = cb->next())
if (cb->m_func == func)
fatalerror("Duplicate save state function (%s/%s)\n", cb->m_func.name(), func.name());
// allocate a new entry
m_postload_list.append(*auto_alloc(machine(), state_callback(func)));
}
