(horrible names)
struct HPMHookPoint {
	void *func;
	unsigned int pID;
};
struct {
	struct {
		struct HPMHookPoint *HP_battle_check_target_pre;
		struct HPMHookPoint *HP_battle_check_target_post;
	} list;
} HPMHooks;
whatever_function {
	struct HPMHookPoint *a = HPMHooks.list.HP_battle_check_target_pre;
	if( type == HOOK_TYPE_POST ) a = (struct HPMHookPoint *)((char *)a + sizeof(struct HPMHookPoint *));
}