/* Deals damage to an object
* \param psObj object to deal damage to
* \param damage amount of damage to deal
* \param weaponClass the class of the weapon that deals the damage
* \param weaponSubClass the subclass of the weapon that deals the damage
* \return < 0 when the dealt damage destroys the object, > 0 when the object survives
*/
int32_t objDamage(BASE_OBJECT *psObj, unsigned damage, unsigned originalhp, WEAPON_CLASS weaponClass, WEAPON_SUBCLASS weaponSubClass, bool isDamagePerSecond)
{
int actualDamage, armour, level = 1, lastHit = psObj->timeLastHit;
// If the previous hit was by an EMP cannon and this one is not:
// don't reset the weapon class and hit time
// (Giel: I guess we need this to determine when the EMP-"shock" is over)
if (psObj->lastHitWeapon != WSC_EMP || weaponSubClass == WSC_EMP)
{
psObj->timeLastHit = gameTime;
psObj->lastHitWeapon = weaponSubClass;
}
// EMP cannons do no damage, if we are one return now
if (weaponSubClass == WSC_EMP)
{
return 0;
}
// apply game difficulty setting
damage = modifyForDifficultyLevel(damage, psObj->player != selectedPlayer);
armour = psObj->armour[weaponClass];
if (psObj->type == OBJ_STRUCTURE || psObj->type == OBJ_DROID)
{
if (psObj->type == OBJ_STRUCTURE && ((STRUCTURE *)psObj)->status == SS_BEING_BUILT)
{
armour = 0;
}
// Force sending messages, even if messages were turned off, since a non-synchronised script will execute here. (Aaargh!)
bool bMultiMessagesBackup = bMultiMessages;
bMultiMessages = bMultiPlayer;
clustObjectAttacked((BASE_OBJECT *)psObj);
triggerEventAttacked(psObj, g_pProjLastAttacker, lastHit);
bMultiMessages = bMultiMessagesBackup;
}
debug(LOG_ATTACK, "objDamage(%d): body %d armour %d damage: %d", psObj->id, psObj->body, armour, damage);
if (psObj->type == OBJ_DROID)
{
DROID *psDroid = (DROID *)psObj;
// Retrieve highest, applicable, experience level
level = getDroidEffectiveLevel(psDroid);
}
// Reduce damage taken by EXP_REDUCE_DAMAGE % for each experience level
actualDamage = (damage * (100 - EXP_REDUCE_DAMAGE * level)) / 100;
// You always do at least a third of the experience modified damage
actualDamage = MAX(actualDamage - armour, actualDamage / 3);
// And at least MIN_WEAPON_DAMAGE points
actualDamage = MAX(actualDamage, MIN_WEAPON_DAMAGE);
if (isDamagePerSecond)
{
int deltaDamageRate = actualDamage - psObj->burnDamage;
if (deltaDamageRate <= 0)
{
return 0; // Did this much damage already, this tick, so don't do more.
}
actualDamage = gameTimeAdjustedAverage(deltaDamageRate);
psObj->burnDamage += deltaDamageRate;
}
objTrace(psObj->id, "objDamage: Penetrated %d", actualDamage);
syncDebug("damage%u dam%u,o%u,wc%d.%d,ar%d,lev%d,aDam%d,isDps%d", psObj->id, damage, originalhp, weaponClass, weaponSubClass, armour, level, actualDamage, isDamagePerSecond);
// for some odd reason, we have 0 hitpoints.
if (!originalhp)
{
ASSERT(originalhp, "original hitpoints are 0 ?");
return -65536; // it is dead
}
// If the shell did sufficient damage to destroy the object, deal with it and return
if (actualDamage >= psObj->body)
{
return -(int64_t)65536 * psObj->body / originalhp;
}
// Subtract the dealt damage from the droid's remaining body points
psObj->body -= actualDamage;
syncDebugObject(psObj, 'D');
return (int64_t)65536 * actualDamage / originalhp;
}
// update the visibility change levels
void visUpdateLevel(void)
{
visLevelInc = gameTimeAdjustedAverage(VIS_LEVEL_INC);
visLevelDec = gameTimeAdjustedAverage(VIS_LEVEL_DEC);
}