public byte tval; /* Item type for book this spell is in */
#endregion Fields
#region Methods
/**
* Adjust damage according to resistance or vulnerability.
*
* \param type is the attack type we are checking.
* \param dam is the unadjusted damage.
* \param dam_aspect is the calc we want (min, avg, max, random).
* \param resist is the degree of resistance (-1 = vuln, 3 = immune).
*/
public static int adjust_dam(Player.Player p, GF type, int dam, aspect dam_aspect, int resist)
{
GF gf_ptr = type;
int i, denom;
if (resist == 3) /* immune */
return 0;
/* Hack - acid damage is halved by armour, holy orb is halved */
if ((type == GF.ACID && minus_ac(p)) || type == GF.HOLY_ORB)
dam = (dam + 1) / 2;
if (resist == -1) /* vulnerable */
return (dam * 4 / 3);
/* Variable resists vary the denominator, so we need to invert the logic
* of dam_aspect. (m_bonus is unused) */
switch (dam_aspect) {
case aspect.MINIMISE:
denom = Random.randcalc(gf_ptr.denom, 0, aspect.MAXIMISE);
break;
case aspect.MAXIMISE:
denom = Random.randcalc(gf_ptr.denom, 0, aspect.MINIMISE);
break;
default:
denom = Random.randcalc(gf_ptr.denom, 0, dam_aspect);
break;
}
for (i = resist; i > 0; i--)
if (denom != 0)
dam = dam * gf_ptr.num / denom;
return dam;
}
/**
* Adjust damage according to resistance or vulnerability.
*
* \param type is the attack type we are checking.
* \param dam is the unadjusted damage.
* \param dam_aspect is the calc we want (min, avg, max, random).
* \param resist is the degree of resistance (-1 = vuln, 3 = immune).
*/
public static int adjust_dam(Player.Player p, GF type, int dam, aspect dam_aspect, int resist)
{
GF gf_ptr = type;
int i, denom;
if (resist == 3) /* immune */
{
return(0);
}
/* Hack - acid damage is halved by armour, holy orb is halved */
if ((type == GF.ACID && minus_ac(p)) || type == GF.HOLY_ORB)
{
dam = (dam + 1) / 2;
}
if (resist == -1) /* vulnerable */
{
return(dam * 4 / 3);
}
/* Variable resists vary the denominator, so we need to invert the logic
* of dam_aspect. (m_bonus is unused) */
switch (dam_aspect)
{
case aspect.MINIMISE:
denom = Random.randcalc(gf_ptr.denom, 0, aspect.MAXIMISE);
break;
case aspect.MAXIMISE:
denom = Random.randcalc(gf_ptr.denom, 0, aspect.MINIMISE);
break;
default:
denom = Random.randcalc(gf_ptr.denom, 0, dam_aspect);
break;
}
for (i = resist; i > 0; i--)
{
if (denom != 0)
{
dam = dam * gf_ptr.num / denom;
}
}
return(dam);
}
/**
* Check for resistance to a GF_ attack type. Return codes:
* -1 = vulnerability
* 0 = no resistance (or resistance plus vulnerability)
* 1 = single resistance or opposition (or double resist plus vulnerability)
* 2 = double resistance (including opposition)
* 3 = total immunity
*
* \param type is the attack type we are trying to resist
* \param flags is the set of flags we're checking
* \param real is whether this is a real attack
*/
public static int check_for_resist(Player.Player p, GF type, Bitflag flags, bool real)
{
//GF gf_ptr = &gf_table[type];
GF gf_ptr = type;
int result = 0;
if (gf_ptr.vuln != Object.Object_Flag.NONE && flags.has(gf_ptr.vuln.value))
{
result--;
}
/* If it's not a real attack, we don't check timed status explicitly */
if (real && (int)gf_ptr.opp != 0 && p.timed[(int)gf_ptr.opp] != 0)
{
result++;
}
if (gf_ptr.resist != Object.Object_Flag.NONE && flags.has(gf_ptr.resist.value))
{
result++;
}
if (gf_ptr.immunity != Object.Object_Flag.NONE && flags.has(gf_ptr.immunity.value))
{
result = 3;
}
/* Notice flags, if it's a real attack */
if (real && gf_ptr.immunity.value != 0)
{
Object.Object.wieldeds_notice_flag(p, gf_ptr.immunity.value);
}
if (real && gf_ptr.resist.value != 0)
{
Object.Object.wieldeds_notice_flag(p, gf_ptr.resist.value);
}
if (real && gf_ptr.vuln.value != 0)
{
Object.Object.wieldeds_notice_flag(p, gf_ptr.vuln.value);
}
return(result);
}
/**
* Check for resistance to a GF_ attack type. Return codes:
* -1 = vulnerability
* 0 = no resistance (or resistance plus vulnerability)
* 1 = single resistance or opposition (or double resist plus vulnerability)
* 2 = double resistance (including opposition)
* 3 = total immunity
*
* \param type is the attack type we are trying to resist
* \param flags is the set of flags we're checking
* \param real is whether this is a real attack
*/
public static int check_for_resist(Player.Player p, GF type, Bitflag flags, bool real)
{
//GF gf_ptr = &gf_table[type];
GF gf_ptr = type;
int result = 0;
if (gf_ptr.vuln != Object.Object_Flag.NONE && flags.has(gf_ptr.vuln.value))
result--;
/* If it's not a real attack, we don't check timed status explicitly */
if (real && (int)gf_ptr.opp != 0 && p.timed[(int)gf_ptr.opp] != 0)
result++;
if (gf_ptr.resist != Object.Object_Flag.NONE && flags.has(gf_ptr.resist.value))
result++;
if (gf_ptr.immunity != Object.Object_Flag.NONE && flags.has(gf_ptr.immunity.value))
result = 3;
/* Notice flags, if it's a real attack */
if (real && gf_ptr.immunity.value != 0)
Object.Object.wieldeds_notice_flag(p, gf_ptr.immunity.value);
if (real && gf_ptr.resist.value != 0)
Object.Object.wieldeds_notice_flag(p, gf_ptr.resist.value);
if (real && gf_ptr.vuln.value != 0)
Object.Object.wieldeds_notice_flag(p, gf_ptr.vuln.value);
return result;
}
