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/*
* File: areas.cc
* Summary: Tracking effects that affect areas for durations.
* Silence, sanctuary, halos, ...
*/
#include "AppHdr.h"
#include "areas.h"
#include "beam.h"
#include "cloud.h"
#include "coord.h"
#include "coordit.h"
#include "directn.h"
#include "env.h"
#include "fprop.h"
#include "mon-behv.h"
#include "mon-iter.h"
#include "mon-stuff.h"
#include "mon-util.h"
#include "monster.h"
#include "player.h"
#include "religion.h"
#include "stuff.h"
#include "traps.h"
#include "travel.h"
#include "viewgeom.h"
static void _remove_sanctuary_property(const coord_def& where)
{
env.pgrid(where) &= ~(FPROP_SANCTUARY_1 | FPROP_SANCTUARY_2);
}
bool remove_sanctuary(bool did_attack)
{
if (env.sanctuary_time)
env.sanctuary_time = 0;
if (!in_bounds(env.sanctuary_pos))
return (false);
const int radius = 5;
bool seen_change = false;
for (radius_iterator ri(env.sanctuary_pos, radius, C_SQUARE); ri; ++ri)
if (is_sanctuary(*ri))
{
_remove_sanctuary_property(*ri);
if (you.see_cell(*ri))
seen_change = true;
}
env.sanctuary_pos.set(-1, -1);
if (did_attack)
{
if (seen_change)
simple_god_message(" revokes the gift of sanctuary.", GOD_ZIN);
did_god_conduct(DID_FRIEND_DIED, 3);
}
// Now that the sanctuary is gone, monsters aren't afraid of it
// anymore.
for (monster_iterator mi; mi; ++mi)
mons_stop_fleeing_from_sanctuary(*mi);
if (is_resting())
stop_running();
return (true);
}
// For the last (radius) counter turns the sanctuary will slowly shrink.
void decrease_sanctuary_radius()
{
const int radius = 5;
// For the last (radius-1) turns 33% chance of not decreasing.
if (env.sanctuary_time < radius && one_chance_in(3))
return;
int size = --env.sanctuary_time;
if (size >= radius)
return;
if (you.running && is_sanctuary(you.pos()))
{
mpr("The sanctuary starts shrinking.", MSGCH_DURATION);
stop_running();
}
for (radius_iterator ri(env.sanctuary_pos, size+1, C_SQUARE); ri; ++ri)
{
int dist = distance(*ri, env.sanctuary_pos);
// If necessary overwrite sanctuary property.
if (dist > size*size)
_remove_sanctuary_property(*ri);
}
// Special case for time-out of sanctuary.
if (!size)
{
_remove_sanctuary_property(env.sanctuary_pos);
if (you.see_cell(env.sanctuary_pos))
mpr("The sanctuary disappears.", MSGCH_DURATION);
}
}
void create_sanctuary(const coord_def& center, int time)
{
env.sanctuary_pos = center;
env.sanctuary_time = time;
// radius could also be influenced by Inv
// and would then have to be stored globally.
const int radius = 5;
int blood_count = 0;
int trap_count = 0;
int scare_count = 0;
int cloud_count = 0;
monsters *seen_mon = NULL;
for (radius_iterator ri(center, radius, C_POINTY); ri; ++ri)
{
const coord_def pos = *ri;
const int dist = distance(center, pos);
if (testbits(env.pgrid(pos), FPROP_BLOODY) && you.see_cell(pos))
blood_count++;
if (trap_def* ptrap = find_trap(pos))
{
if (!ptrap->is_known())
{
ptrap->reveal();
++trap_count;
}
}
// forming patterns
const int x = pos.x - center.x, y = pos.y - center.y;
bool in_yellow = false;
switch (random2(4))
{
case 0: // outward rays
in_yellow = (x == 0 || y == 0 || x == y || x == -y);
break;
case 1: // circles
in_yellow = (dist >= (radius-1)*(radius-1)
&& dist <= radius*radius
|| dist >= (radius/2-1)*(radius/2-1)
&& dist <= radius*radius/4);
break;
case 2: // latticed
in_yellow = (x%2 == 0 || y%2 == 0);
break;
case 3: // cross-like
in_yellow = (abs(x)+abs(y) < 5 && x != y && x != -y);
break;
default:
break;
}
env.pgrid(pos) |= (in_yellow ? FPROP_SANCTUARY_1
: FPROP_SANCTUARY_2);
env.pgrid(pos) &= ~(FPROP_BLOODY);
// Scare all attacking monsters inside sanctuary, and make
// all friendly monsters inside sanctuary stop attacking and
// move towards the player.
if (monsters* mon = monster_at(pos))
{
if (mon->friendly())
{
mon->foe = MHITYOU;
mon->target = center;
mon->behaviour = BEH_SEEK;
behaviour_event(mon, ME_EVAL, MHITYOU);
}
else if (!mon->wont_attack())
{
if (mons_is_mimic(mon->type))
{
mimic_alert(mon);
if (you.can_see(mon))
{
scare_count++;
seen_mon = mon;
}
}
else if (mons_is_influenced_by_sanctuary(mon))
{
mons_start_fleeing_from_sanctuary(mon);
// Check to see that monster is actually fleeing.
if (mons_is_fleeing(mon) && you.can_see(mon))
{
scare_count++;
seen_mon = mon;
}
}
}
}
if (!is_harmless_cloud(cloud_type_at(pos)))
{
delete_cloud(env.cgrid(pos));
if (you.see_cell(pos))
cloud_count++;
}
} // radius loop
// Messaging.
if (trap_count > 0)
{
mpr("By Zin's power hidden traps are revealed to you.",
MSGCH_GOD);
}
if (cloud_count == 1)
{
mpr("By Zin's power the foul cloud within the sanctuary is "
"swept away.", MSGCH_GOD);
}
else if (cloud_count > 1)
{
mpr("By Zin's power all foul fumes within the sanctuary are "
"swept away.", MSGCH_GOD);
}
if (blood_count > 0)
{
mpr("By Zin's power all blood is cleared from the sanctuary.",
MSGCH_GOD);
}
if (scare_count == 1 && seen_mon != NULL)
simple_monster_message(seen_mon, " turns to flee the light!");
else if (scare_count > 0)
mpr("The monsters scatter in all directions!");
}
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