void input_t::keyboard_to_signal(){
const bool alt_key = query_key(SDL_SCANCODE_LALT) || query_key(SDL_SCANCODE_RALT);
if(unlikely(alt_key)){
if(query_key(SDL_SCANCODE_1)){
set_signal(SIGNAL_QUIT_LOOP, true);
}else{
set_signal(SIGNAL_QUIT_LOOP, false);
}
}
}
void query_options(struct soap *soap, struct option *options)
{ char *s = query(soap); /* get arguments from query string */
while (s)
{ char *key = query_key(soap, &s); /* decode next query string key */
char *val = query_val(soap, &s); /* decode next query string value */
if (key)
set_option(key, val, options);
}
}
bool
wait_restart(void){
disable_interrupt();
if ( query_key('r' - 'a') ){
release_key('r' - 'a');
return true;
}
enable_interrupt();
return false;
}
//改变蛇的运动方向
void ChangeDir()
{
disable_interrupt();
//寻找已经按下的键，若有多个键按下，处理优先级以此为上下左右
int i;
for(i=0;i<4;i++)
{
if(query_key(i))
switch(i)
{
case 0:snake.dir = up;break;
case 1:snake.dir = down;break;
case 2:snake.dir = left;break;
case 3:snake.dir = right;break;
}
release_key(i);
}
enable_interrupt();
}
/* 更新按键 */
bool update_keypress(void) {
fly_t it, target = NULL;
float min = -100;
disable_interrupt();
/* 寻找相应键已被按下、最底部且未被击中的字符 */
for (it = head; it != NULL; it = it->_next) {
assert(it->text >= 0 && it->text < 26);
if (it->v > 0 && it->x > min && query_key(it->text)) {
min = it->x;
target = it;
}
}
/* 如果找到则更新相应数据 */
if (target != NULL) {
release_key(target->text);
target->v = -3; /* 速度改为向上 */
return TRUE;
}
enable_interrupt();
return FALSE;
}
/* 更新按键 */
bool
update_keypress(void) {
fly_t it, target = NULL;
FLOAT min = -int2F(100);
cli();
/* 寻找相应键已被按下、最底部且未被击中的字符 */
for (it = head; it != NULL; it = it->_next) {
assert(it->text >= 0 && it->text < 26);
if (it->v > 0 && it->x > min && query_key(it->text)) {
min = it->x;
target = it;
}
}
/* 如果找到则更新相应数据 */
if (target != NULL) {
release_key(target->text);
target->v = -int2F(3); /* 速度改为向上 */
return true;
}
sti();
return false;
}
