 | | | Problem with combat | Problem with combat 2003-12-11 - By Sarix
Back
Ok a while ago I redid our combat system to fit with more on how we wanted
it to work. And so far it's been working good but lattly I've been having
this problem, and IDK how it's a problem because it shouldn't be according
to how it all works. I'll show you what it's doing and what I mean. When
someone goes to start an attack the time_to_kill function is called, that
top part of it looks like this:
void fight_type::time_to_kill(CHAR_DATA *ch)
{
OBJ_DATA *wield, *secondary;
if (ch->AffFlagged(AFF_PARALIZE))
return;
if (!ch->is_fighting())
return;
if (IS_VALID(ch->attack_obj))
free_attack_data(ch->attack_obj);
ch->attack_obj = new_attack_data();
ch->attack_obj->ch = ch;
ch->attack_obj->victim = ch->Fighting();
if (IS_NPC(ch))
{
this->mob_hit(ch);
this->end_player_attack(ch);
return;
}
else
{
K now the problem I'm having is with mobs attacking. I'll show the core:
#0 0x080cb949 in fight_type::hit_hand_to_hand (this=0x82e7c14,
ch=0x40fda410)
at fight.cc:451
451 ch->attack_obj->dam = dam;
(gdb) print ch->attack_obj
$1 = (ATTACK_DATA *) 0x0
(gdb) bt
#0 0x080cb949 in fight_type::hit_hand_to_hand (this=0x82e7c14,
ch=0x40fda410)
at fight.cc:451
#1 0x080cc374 in fight_type::mob_hit (this=0x82e7c14, ch=0x40fda410)
at fight.cc:663
#2 0x080cb5de in fight_type::time_to_kill (this=0x82e7c14, ch=0x40fda410)
at fight.cc:396
#3 0x080d008c in char_data::attack (this=0x40fda410) at fight.cc:1800
#4 0x080d0443 in char_data::init_fight (this=0x40fda410, victim=0x40fd9e28)
at fight.cc:1907
#5 0x080d031d in char_data::change_fighting (this=0x40fd9e28,
victim=0x40fda410) at fight.cc:1875
#6 0x080cc348 in fight_type::mob_hit (this=0x82e7c14, ch=0x40fd9e28)
at fight.cc:660
#7 0x080cb5de in fight_type::time_to_kill (this=0x82e7c14, ch=0x40fd9e28)
at fight.cc:396
#8 0x080d008c in char_data::attack (this=0x40fd9e28) at fight.cc:1800
#9 0x080d0443 in char_data::init_fight (this=0x40fd9e28, victim=0x40f9aeb0)
at fight.cc:1907
#10 0x080d031d in char_data::change_fighting (this=0x40f9aeb0,
victim=0x40fd9e28) at fight.cc:1875
#11 0x080cc348 in fight_type::mob_hit (this=0x82e7c14, ch=0x40f9aeb0)
at fight.cc:660
#12 0x080cb5de in fight_type::time_to_kill (this=0x82e7c14, ch=0x40f9aeb0)
at fight.cc:396
---Type <return> to continue, or q <return> to quit---
#13 0x080d008c in char_data::attack (this=0x40f9aeb0) at fight.cc:1800
#14 0x080d0443 in char_data::init_fight (this=0x40f9aeb0, victim=0x40b43144)
at fight.cc:1907
#15 0x080d031d in char_data::change_fighting (this=0x40b43144,
victim=0x40f9aeb0) at fight.cc:1875
#16 0x080cc348 in fight_type::mob_hit (this=0x82e7c14, ch=0x40b43144)
at fight.cc:660
#17 0x080cb5de in fight_type::time_to_kill (this=0x82e7c14, ch=0x40b43144)
at fight.cc:396
#18 0x080d008c in char_data::attack (this=0x40b43144) at fight.cc:1800
#19 0x080d0443 in char_data::init_fight (this=0x40b43144, victim=0x40f9c744)
at fight.cc:1907
#20 0x080d0435 in char_data::init_fight (this=0x40f9c744, victim=0x40b43144)
at fight.cc:1905
#21 0x080d7c66 in do_kill (ch=0x40f9c744, argument=0x40fca773 "q")
at fight.cc:4749
#22 0x080fed0e in interpret (ch=0x40f9c744, argument=0x40fca773 "q")
at interp.cc:788
#23 0x0809cf56 in substitute_alias (d=0x40fc8754, argument=0x40fca771 "k q")
at alias.cc:58
#24 0x080adc6a in game_loop_unix (control=4, control2=5) at comm.cc:1252
#25 0x080ad43b in main (argc=4, argv=0xbffff714) at comm.cc:828
#26 0x400711c4 in __libc_start_main () from /lib/libc.so.6
(gdb) fram 21
#21 0x080d7c66 in do_kill (ch=0x40f9c744, argument=0x40fca773 "q")
at fight.cc:4749
4749 ch->init_fight(victim);
(gdb) print ch->name
$2 = 0x40f9c978 "Corellon"
(gdb) print victim->name
$3 = 0x4024e33d "black queen"
(gdb) down
#20 0x080d0435 in char_data::init_fight (this=0x40f9c744, victim=0x40b43144)
at fight.cc:1905
1905 victim->init_fight(this);
(gdb) print victim->name
$4 = 0x4024e33d "black queen"
(gdb) print this->name
$5 = 0x40f9c978 "Corellon"
(gdb) down
#19 0x080d0443 in char_data::init_fight (this=0x40b43144, victim=0x40f9c744)
at fight.cc:1907
1907 this->attack();
(gdb) print this->name
$6 = 0x4024e33d "black queen"
(gdb) down
#18 0x080d008c in char_data::attack (this=0x40b43144) at fight.cc:1800
1800 fight_handler.time_to_kill(this);
(gdb) down
#17 0x080cb5de in fight_type::time_to_kill (this=0x82e7c14, ch=0x40b43144)
at fight.cc:396
396 this->mob_hit(ch);
(gdb) print ch->name
$7 = 0x4024e33d "black queen"
(gdb) print ch->attack_obj
$8 = (ATTACK_DATA *) 0x0
(gdb)
My problem is at the top of time_to_kill it's making sure the person has a
valid attack_obj but for some reason by the time it gets to the mob_hit call
which is like what 4 lines away. The characters pointer to it's attack_obj
is NULL. How could it not be allocating this? Also this is how I handle
getting new and freeing attack_obj's
ATTACK_DATA *attack_free;
ATTACK_DATA *new_attack_data()
{
static ATTACK_DATA attack_zero;
ATTACK_DATA *attack;
if ( !attack_free )
attack = (ATTACK_DATA *)alloc_perm(sizeof(*attack));
else
{
attack = attack_free;
attack_free = attack_free->next;
}
*attack = attack_zero;
VALIDATE(attack);
return attack;
}
void free_attack_data(ATTACK_DATA *attack)
{
if (!attack)
return;
INVALIDATE(attack);
attack->next = attack_free;
attack_free = attack;
}
So if you can see that I missed anything please point it out to me this is
becoming a pain.
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