/* Called when a power box collides with the bat. Activates the relevant
* power-up or power-down. */
void power_collision(nbstate *state, power *p)
{
switch(p->type) {
case POWERW:
activate_widebat(state);
break;
case POWERS:
activate_slowmotion(state);
break;
case POWERT:
activate_stickybat(state);
break;
case POWERP:
activate_powerball(state);
break;
case POWERN:
activate_narrowbat(state);
break;
case POWERF:
activate_fastmotion(state);
break;
}
}
/* The key event handler. */
int handle_keystroke_event(nbstate *state, GR_EVENT_KEYSTROKE *ev)
{
/* If the event is a "key up" event and the key is either the left or
* right cursor key, cancel bat movement in that direction. Otherwise
* we don't care about the event. */
if(ev->type == GR_EVENT_TYPE_KEY_UP) {
switch(ev->ch) {
case MWKEY_LEFT:
state->flags.left = 0;
break;
case MWKEY_RIGHT:
state->flags.right = 0;
break;
default:
/* Ignore the event. */
break;
}
return 0; /* Normal return. */
}
/* If we get to here, it's a "key down" event. Perform various
* different actions depending on which key was pressed: */
switch(ev->ch) {
case ' ': /* The space bar is the "action" key: */
action_pressed(state);
break;
case MWKEY_F1: /* F1 is the "pause" key: */
state->flags.paused ^= 1; /* Set the pause flag. */
break;
case MWKEY_F2: /* F2 is the "suicide" key: */
lost_ball(state); /* Throw away the current ball. */
break;
#ifdef DEBUG_POWERS
/* If DEBUG_POWERS is defined in nbreaker.h, keys F3-F8 are
* used to trigger the power ups and power downs without
* needing to catch a falling power box. */
case MWKEY_F3: /* WideBat */
activate_widebat(state);
break;
case MWKEY_F4: /* SlowMotion */
activate_slowmotion(state);
break;
case MWKEY_F5: /* StickyBat */
activate_stickybat(state);
break;
case MWKEY_F6: /* PowerBall */
activate_powerball(state);
break;
case MWKEY_F7: /* NarrowBat */
activate_narrowbat(state);
break;
case MWKEY_F8: /* FastMotion */
activate_fastmotion(state);
break;
#endif
case MWKEY_LEFT: /* The left cursor key: */
/* Set the "moving left" flag and cancel the
* "moving right" one. */
state->flags.left = 1;
state->flags.right = 0;
break;
case MWKEY_RIGHT: /* The right cursor key: */
/* Set the "moving right" flag and cancel the
* "moving left" one. */
state->flags.left = 0;
state->flags.right = 1;
break;
#ifdef NB_DEBUG
/* If NB_DEBUG is set in nbreaker.h, dump the game state when
* F10 is pressed. */
case MWKEY_F10:
dump_state(state);
break;
#endif
/* If the escape key is pressed, return 1 which means "exit
* the game". */
case MWKEY_ESCAPE:
return 1;
/* Feed all other key presses to the cheat recogniser engine: */
default:
do_cheat(state, ev->ch);
break;
}
return 0; /* Normal return. */
}