mirror
/
devilutionX
mirror of https://github.com/diasurgical/devilutionX.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity
Browse Source

🐛 Fix bounds checks in monster code

pull/2379/head
Anders Jenbo 5 years ago
parent
c0128d79b8
commit
a44781bd73
3 changed files with 65 additions and 67 deletions
Whitespace
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Split View
Diff Options
Show Stats Download Patch File Download Diff File
  1. 9
      Source/missiles.cpp
  2. 121
      Source/monster.cpp
  3. 2
      Source/msg.cpp

9
Source/missiles.cpp
Unescape View File

@ -1485,7 +1485,7 @@ void AddBerserk(int mi, Point /*src*/, Point dst, int /*midir*/, int8_t /*mienem
int dm = dMonster[tx][ty];
dm = dm > 0 ? dm - 1 : -(dm + 1);
if (dm <= 3)
if (dm < MAX_PLRS)
continue;
auto &monster = Monsters[dm];
@ -2233,7 +2233,7 @@ void AddLightning(int mi, Point /*src*/, Point dst, int midir, int8_t mienemy, i
void AddMisexp(int mi, Point /*src*/, Point dst, int /*midir*/, int8_t mienemy, int id, int /*dam*/)
{
if (mienemy != 0 && id > 0) {
if (mienemy != 0 && id >= 0) {
switch (Monsters[id].MType->mtype) {
case MT_SUCCUBUS:
SetMissAnim(mi, MFILE_FLAREEXP);
@ -2597,6 +2597,8 @@ void AddStone(int mi, Point /*src*/, Point dst, int /*midir*/, int8_t /*mienemy*
ty = dst.y + CrawlTable[ck];
if (InDungeonBounds({ tx, ty })) {
int mid = dMonster[tx][ty];
if (mid == 0)
continue;
mid = mid > 0 ? mid - 1 : -(mid + 1);
auto &monster = Monsters[mid];
if (mid > MAX_PLRS - 1 && monster._mAi != AI_DIABLO && monster.MType->mtype != MT_NAKRUL) {
@ -3481,7 +3483,8 @@ void MI_HorkSpawn(int mi)
i = 6;
auto md = static_cast<Direction>(Missiles[mi]._miVar1);
int monsterId = AddMonster({ tx, ty }, md, 1, true);
M_StartStand(Monsters[monsterId], md);
if (monsterId != -1)
M_StartStand(Monsters[monsterId], md);
break;
}
}

121
Source/monster.cpp
Unescape View File

@ -1957,13 +1957,14 @@ void GroupUnity(int i)
assert((DWORD)i < MAXMONSTERS);
auto &monster = Monsters[i];
auto &leader = Monsters[monster.leader];
if (monster.leaderflag != MonsterRelation::Individual) {
bool clear = IsLineNotSolid(monster.position.tile, leader.position.future);
if (clear || monster.leaderflag != MonsterRelation::Minion) {
if (clear
&& monster.leaderflag == MonsterRelation::Leader
&& monster.position.tile.WalkingDistance(leader.position.future) < 4) {
if (monster.leaderflag == MonsterRelation::Individual) {
return;
}
if (monster.leader != 0) {
auto &leader = Monsters[monster.leader];
if (IsLineNotSolid(monster.position.tile, leader.position.future)) {
if (monster.leaderflag == MonsterRelation::Leader && monster.position.tile.WalkingDistance(leader.position.future) < 4) {
leader.packsize++;
monster.leaderflag = MonsterRelation::Minion;
}
@ -1971,35 +1972,34 @@ void GroupUnity(int i)
leader.packsize--;
monster.leaderflag = MonsterRelation::Leader;
}
}
if (monster.leaderflag == MonsterRelation::Minion) {
if (monster._msquelch > leader._msquelch) {
leader.position.last = monster.position.tile;
leader._msquelch = monster._msquelch - 1;
}
if (leader._mAi == AI_GARG) {
if ((leader._mFlags & MFLAG_ALLOW_SPECIAL) != 0) {
leader._mFlags &= ~MFLAG_ALLOW_SPECIAL;
leader._mmode = MM_SATTACK;
if (monster.leaderflag == MonsterRelation::Minion) {
if (monster._msquelch > leader._msquelch) {
leader.position.last = monster.position.tile;
leader._msquelch = monster._msquelch - 1;
}
}
} else if (monster._uniqtype != MonsterRelation::Individual) {
if ((UniqMonst[monster._uniqtype - 1].mUnqAttr & 2) != 0) {
for (int j = 0; j < ActiveMonsterCount; j++) {
auto &minion = Monsters[ActiveMonsters[j]];
if (minion.leaderflag == MonsterRelation::Minion && minion.leader == i) {
if (monster._msquelch > minion._msquelch) {
minion.position.last = monster.position.tile;
minion._msquelch = monster._msquelch - 1;
}
if (minion._mAi == AI_GARG) {
if ((minion._mFlags & MFLAG_ALLOW_SPECIAL) != 0) {
minion._mFlags &= ~MFLAG_ALLOW_SPECIAL;
minion._mmode = MM_SATTACK;
}
}
}
}
if (monster._mAi == AI_GARG && (monster._mFlags & MFLAG_ALLOW_SPECIAL) != 0) {
if (monster.leaderflag == MonsterRelation::Minion || monster.packsize > 0) {
monster._mFlags &= ~MFLAG_ALLOW_SPECIAL;
monster._mmode = MM_SATTACK;
}
}
if (monster.leaderflag == MonsterRelation::Leader && monster._uniqtype != 0) {
if ((UniqMonst[monster._uniqtype - 1].mUnqAttr & 2) == 0) {
return;
}
for (int j = 0; j < ActiveMonsterCount; j++) {
auto &minion = Monsters[ActiveMonsters[j]];
if (minion.leaderflag != MonsterRelation::Minion || minion.leader != i) {
continue;
}
if (monster._msquelch > minion._msquelch) {
minion.position.last = monster.position.tile;
minion._msquelch = monster._msquelch - 1;
}
}
}
@ -4386,38 +4386,35 @@ void GolumAi(int i)
if ((golem._mFlags & MFLAG_TARGETS_MONSTER) == 0)
UpdateEnemy(golem);
bool haveEnemy = (golem._mFlags & MFLAG_NO_ENEMY) == 0;
if (golem._mmode == MM_ATTACK) {
return;
}
auto &enemy = Monsters[golem._menemy];
int mex = golem.position.tile.x - enemy.position.future.x;
int mey = golem.position.tile.y - enemy.position.future.y;
Direction md = GetDirection(golem.position.tile, enemy.position.tile);
golem._mdir = md;
if (abs(mex) < 2 && abs(mey) < 2 && haveEnemy) {
golem.enemyPosition = enemy.position.tile;
if (enemy._msquelch == 0) {
enemy._msquelch = UINT8_MAX;
enemy.position.last = golem.position.tile;
for (int j = 0; j < 5; j++) {
for (int k = 0; k < 5; k++) {
int menemy = dMonster[golem.position.tile.x + k - 2][golem.position.tile.y + j - 2]; // BUGFIX: Check if indexes are between 0 and 112
if (menemy > 0)
Monsters[menemy - 1]._msquelch = UINT8_MAX; // BUGFIX: should be `Monsters[_menemy-1]`, not Monsters[_menemy]. (fixed)
if ((golem._mFlags & MFLAG_NO_ENEMY) == 0) {
auto &enemy = Monsters[golem._menemy];
int mex = golem.position.tile.x - enemy.position.future.x;
int mey = golem.position.tile.y - enemy.position.future.y;
golem._mdir = GetDirection(golem.position.tile, enemy.position.tile);
if (abs(mex) < 2 && abs(mey) < 2) {
golem.enemyPosition = enemy.position.tile;
if (enemy._msquelch == 0) {
enemy._msquelch = UINT8_MAX;
enemy.position.last = golem.position.tile;
for (int j = 0; j < 5; j++) {
for (int k = 0; k < 5; k++) {
int enemyId = dMonster[golem.position.tile.x + k - 2][golem.position.tile.y + j - 2]; // BUGFIX: Check if indexes are between 0 and 112
if (enemyId > 0)
Monsters[enemyId - 1]._msquelch = UINT8_MAX; // BUGFIX: should be `Monsters[_menemy-1]`, not Monsters[_menemy]. (fixed)
}
}
}
StartAttack(golem);
return;
}
StartAttack(golem);
return;
if (AiPlanPath(i))
return;
}
if (haveEnemy && AiPlanPath(i))
return;
golem._pathcount++;
if (golem._pathcount > 8)
golem._pathcount = 5;
@ -4426,7 +4423,7 @@ void GolumAi(int i)
if (ok)
return;
md = left[md];
Direction md = left[golem._mdir];
for (int j = 0; j < 8 && !ok; j++) {
md = right[md];
ok = DirOK(i, md);
@ -4628,12 +4625,10 @@ bool DirOK(int i, Direction mdir)
if (y < 0 || y >= MAXDUNY || x < 0 || x >= MAXDUNX)
continue;
int mi = dMonster[x][y];
if (mi < 0)
mi = -mi;
if (mi != 0)
mi--;
// BUGFIX: should only run pack member check if mi was non-zero prior to executing the body of the above if-statement.
auto &minion = Monsters[mi];
if (mi == 0)
continue;
auto &minion = Monsters[(mi < 0) ? -(mi + 1) : (mi - 1)];
if (minion.leaderflag == MonsterRelation::Minion
&& minion.leader == i
&& minion.position.future == Point { x, y }) {

2
Source/msg.cpp
Unescape View File

@ -1264,7 +1264,7 @@ DWORD OnMonstDeath(TCmd *pCmd, int pnum)
if (gbBufferMsgs == 1)
SendPacket(pnum, p, sizeof(*p));
else if (pnum != MyPlayerId) {
else if (pnum != MyPlayerId && p->wParam1 < MAXMONSTERS) {
if (currlevel == Players[pnum].plrlevel)
M_SyncStartKill(p->wParam1, { p->x, p->y }, pnum);
delta_kill_monster(p->wParam1, { p->x, p->y }, Players[pnum].plrlevel);

Write Preview
Loading…
Cancel
Save