地形碰撞检测方法，J2ME手机游戏开发例程之一，供初学者学习，含代码！-terrain collision detection methods, the development of J2ME mobile gaming routines, one for beginners to learn, with the code!
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001354s ]
SELECT `a`.`aid`,`a`.`title`,`a`.`create_time`,`m`.`username` FROM `jrk_downrecords` `a` INNER JOIN `jrk_member` `m` ON `a`.`uid`=`m`.`id` WHERE `a`.`status` = 1 GROUP BY `a`.`aid` ORDER BY `a`.`create_time` DESC LIMIT 10 [ RunTime:0.091640s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001263s ]
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SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001224s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003624s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001139s ]
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SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001468s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 106193 [ RunTime:0.001358s ]
