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#include "base/switchCallbacks.h"
#include <string.h>
#include <stdlib.h>
Callbacks *last_callback = NULL;
Callbacks *current_callback = NULL;
void exitCallback(Callbacks *cb) {
if(cb != NULL)
if(cb->exit != NULL)
(cb->exit)(); /* give them the chance to quit */
}
void initCallback(Callbacks *cb) {
if(cb->init != NULL)
(cb->init)();
if(cb->initGL != NULL)
(cb->initGL)();
}
void switchCallbacks(Callbacks *new) {
// if(current_callback)
// fprintf(stderr, "callbacks: exiting %s\n", current_callback->name);
exitCallback(current_callback);
SystemRegisterCallbacks(new);
// fprintf(stderr, "callbacks: initializing %s\n", new->name);
initCallback(new);
last_callback = current_callback;
current_callback = new;
}
void updateCallbacks(void) {
/* called when the window is recreated */
exitCallback(current_callback);
SystemRegisterCallbacks(current_callback);
initCallback(current_callback);
}
void restoreCallbacks(void) {
if(last_callback == NULL) {
fprintf(stderr, "fatal: no last callback present, exiting\n");
exit(1); // OK: programmer error, critical
}
exitCallback(last_callback);
current_callback = last_callback;
SystemRegisterCallbacks(current_callback);
initCallback(current_callback);
}
#define N_CALLBACKS 7
Callbacks *callbackList[N_CALLBACKS] = {
&gameCallbacks, &guiCallbacks, &pauseCallbacks, &configureCallbacks,
&promptCallbacks, &creditsCallbacks, &timedemoCallbacks
};
void setCallback(const char *name) {
int i;
for(i = 0; i < N_CALLBACKS; i++) {
if(strcmp( callbackList[i]->name, name ) == 0)
break;
}
if(i == N_CALLBACKS) {
fprintf(stderr, "fatal: no callback named '%s' found\n", name);
exit(1); // OK: programmer error, critical
}
switchCallbacks(callbackList[i]);
}
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