static int get_hit(void)
{
libcbio_t handle;
libcbio_document_t doc;
cbio_error_t err;
if (get_miss() != 0 || store_document() != 0) {
/* Error already reported */
return 1;
}
err = cbio_open_handle(dbfile, CBIO_OPEN_RDONLY, &handle);
if (err != CBIO_SUCCESS) {
report("Expected open of \"%s\" to succeed, but it \"%s\"",
cbio_strerror(err));
return 1;
}
err = cbio_get_document(handle, "hi-there", sizeof("hi-there"), &doc);
if (err != CBIO_SUCCESS) {
report("Expected to find the document, but I got \"%s\"",
cbio_strerror(err));
return 1;
}
cbio_document_release(doc);
cbio_close_handle(handle);
return 0;
}
/* 绘制屏幕上的内容。
* 注意程序在绘图之前调用了prepare_buffer，结束前调用了display_buffer。
* prepare_buffer会准备一个空白的绘图缓冲区，display_buffer则会将缓冲区绘制到屏幕上，
* draw_pixel或draw_string绘制的内容将保存在缓冲区内(暂时不会显示在屏幕上)，调用
* display_buffer后才会显示。
*/
void
redraw_screen() {
fly_t it;
const char *hit, *miss;
prepare_buffer(); /* 准备缓冲区 */
/* 绘制每个字符 */
for (it = characters(); it != NULL; it = it->_next) {
static char buf[2];
buf[0] = it->text + 'A'; buf[1] = 0;
draw_string(buf, F2int(it->x), it->y, 15);
}
/* 绘制命中数、miss数、最后一次按键扫描码和fps */
draw_string(itoa(last_key_code()), SCR_HEIGHT - 8, 0, 48);
hit = itoa(get_hit());
draw_string(hit, 0, SCR_WIDTH - strlen(hit) * 8, 10);
miss = itoa(get_miss());
draw_string(miss, SCR_HEIGHT - 8, SCR_WIDTH - strlen(miss) * 8, 12);
draw_string(itoa(get_fps()), 0, 0, 14);
draw_string("FPS", 0, strlen(itoa(get_fps())) * 8, 14);
display_buffer(); /* 绘制缓冲区 */
}
static int delete_document(void)
{
libcbio_t handle;
libcbio_document_t doc;
cbio_error_t err;
if (get_miss() != 0 || store_document() != 0) {
/* Error already reported */
return 1;
}
err = cbio_open_handle(dbfile, CBIO_OPEN_CREATE, &handle);
if (err != CBIO_SUCCESS) {
report("Expected open of \"%s\" to succeed, but it \"%s\"",
cbio_strerror(err));
return 1;
}
err = cbio_create_empty_document(handle, &doc);
if (err != CBIO_SUCCESS) {
report("Failed to create an empty document: \"%s\"",
cbio_strerror(err));
return 1;
}
err = cbio_document_set_id(doc, "hi-there", sizeof("hi-there"), 0);
if (err != CBIO_SUCCESS) {
report("Failed to set document id \"%s\"",
cbio_strerror(err));
return 1;
}
err = cbio_document_set_revision(doc, 1);
if (err != CBIO_SUCCESS) {
report("Failed to set revision \"%s\"",
cbio_strerror(err));
return 1;
}
err = cbio_document_set_deleted(doc, 1);
if (err != CBIO_SUCCESS) {
report("Failed to set deleted \"%s\"",
cbio_strerror(err));
return 1;
}
err = cbio_store_document(handle, doc);
if (err != CBIO_SUCCESS) {
report("Failed to store document \"%s\"",
cbio_strerror(err));
return 1;
}
cbio_commit(handle);
cbio_document_release(doc);
cbio_close_handle(handle);
return 0;
}
static int get_deleted_document(void)
{
return (delete_document() != 0 || get_miss() != 0) ? 1 : 0;
}
