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spl-transloc.cc
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spl-transloc.cc
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/**
* @file
* @brief Translocation spells.
**/
#include "AppHdr.h"
#include "spl-transloc.h"
#include <algorithm>
#include <cmath>
#include <vector>
#include "abyss.h"
#include "act-iter.h"
#include "areas.h"
#include "art-enum.h"
#include "artefact.h"
#include "cloud.h"
#include "coordit.h"
#include "delay.h"
#include "directn.h"
#include "dungeon.h"
#include "english.h"
#include "god-abil.h" // fedhas_passthrough for palentonga charge
#include "item-prop.h"
#include "items.h"
#include "level-state-type.h"
#include "libutil.h"
#include "los.h"
#include "losglobal.h"
#include "losparam.h"
#include "melee-attack.h" // palentonga charge
#include "message.h"
#include "mon-behv.h"
#include "mon-tentacle.h"
#include "mon-util.h"
#include "movement.h" // palentonga charge
#include "nearby-danger.h"
#include "orb.h"
#include "output.h"
#include "prompt.h"
#include "religion.h"
#include "shout.h"
#include "spl-damage.h" // cancel_polar_vortex
#include "spl-monench.h"
#include "spl-util.h"
#include "stash.h"
#include "state.h"
#include "stringutil.h"
#include "target.h"
#include "teleport.h"
#include "terrain.h"
#include "tiledoll.h"
#include "traps.h"
#include "view.h"
#include "viewmap.h"
#include "xom.h"
/**
* Place a cloud of translocational energy at a player's previous location,
* to make it easier for players to tell what just happened.
*
* @param origin The player's previous location.
*/
static void _place_tloc_cloud(const coord_def &origin)
{
if (!cell_is_solid(origin))
place_cloud(CLOUD_TLOC_ENERGY, origin, 1 + random2(3), &you);
}
spret cast_disjunction(int pow, bool fail)
{
fail_check();
int rand = random_range(35, 45) + random2(pow / 12);
you.duration[DUR_DISJUNCTION] = min(90 + pow / 12,
max(you.duration[DUR_DISJUNCTION] + rand,
30 + rand));
disjunction_spell();
return spret::success;
}
void disjunction_spell()
{
int steps = you.time_taken;
invalidate_agrid(true);
for (int step = 0; step < steps; ++step)
{
vector<monster*> mvec;
for (radius_iterator ri(you.pos(), LOS_RADIUS, C_SQUARE); ri; ++ri)
{
monster* mons = monster_at(*ri);
if (!mons || !you.see_cell(*ri))
continue;
mvec.push_back(mons);
}
if (mvec.empty())
return;
// blink should be isotropic
shuffle_array(mvec);
for (auto mons : mvec)
{
if (!mons->alive() || mons->no_tele())
continue;
coord_def p = mons->pos();
if (!disjunction_haloed(p))
continue;
int dist = grid_distance(you.pos(), p);
int decay = max(1, (dist - 1) * (dist + 1));
int chance = pow(0.8, 1.0 / decay) * 1000;
if (!x_chance_in_y(chance, 1000))
blink_away(mons, &you, false);
}
}
}
/**
* Attempt to blink the player to a random nearby tile.
*
* @param override_stasis Whether to blink even if the player is under
* stasis (& thus normally unable to).
*/
void uncontrolled_blink(bool override_stasis)
{
if (you.no_tele(true) && !override_stasis)
{
canned_msg(MSG_STRANGE_STASIS);
return;
}
coord_def target;
// First try to find a random square not adjacent to the player,
// then one adjacent if that fails.
if (!random_near_space(&you, you.pos(), target)
&& !random_near_space(&you, you.pos(), target, true))
{
mpr("You feel jittery for a moment.");
return;
}
if (!you.attempt_escape(2)) // prints its own messages
return;
canned_msg(MSG_YOU_BLINK);
const coord_def origin = you.pos();
move_player_to_grid(target, false);
_place_tloc_cloud(origin);
}
/**
* Let the player choose a destination for their controlled blink or similar
* effect.
*
* @param target[out] The target found, if any.
* @param safe_cancel Whether it's OK to let the player cancel the control
* of the blink (or whether there should be a prompt -
* for e.g. read-identified ?blink)
* @param verb What kind of movement is this, exactly?
* (E.g. 'blink', 'hop'.)
* @param hitfunc A hitfunc passed to the direction_chooser.
* @return True if a target was found; false if the player aborted.
*/
static bool _find_cblink_target(dist &target, bool safe_cancel,
string verb, targeter *hitfunc = nullptr, bool physical = false)
{
while (true)
{
// query for location {dlb}:
direction_chooser_args args;
args.restricts = DIR_TARGET;
args.needs_path = false;
args.top_prompt = uppercase_first(verb) + " to where?";
args.hitfunc = hitfunc;
direction(target, args);
if (crawl_state.seen_hups)
{
mprf("Cancelling %s due to HUP.", verb.c_str());
return false;
}
if (!target.isValid || target.target == you.pos())
{
const string prompt =
"Are you sure you want to cancel this " + verb + "?";
if (!safe_cancel && !yesno(prompt.c_str(), false, 'n'))
{
clear_messages();
continue;
}
canned_msg(MSG_OK);
return false;
}
const monster* beholder = you.get_beholder(target.target);
if (beholder)
{
mprf("You cannot %s away from %s!",
verb.c_str(),
beholder->name(DESC_THE, true).c_str());
continue;
}
const monster* fearmonger = you.get_fearmonger(target.target);
if (fearmonger)
{
mprf("You cannot %s closer to %s!",
verb.c_str(),
fearmonger->name(DESC_THE, true).c_str());
continue;
}
if (cell_is_solid(target.target))
{
clear_messages();
mprf("You can't %s into that!", verb.c_str());
continue;
}
monster* target_mons = monster_at(target.target);
if (target_mons && you.can_see(*target_mons))
{
mprf("You can't %s onto %s!", verb.c_str(),
target_mons->name(DESC_THE).c_str());
continue;
}
if (!check_moveto(target.target, verb, false))
{
continue;
// try again (messages handled by check_moveto)
}
if (!you.see_cell_no_trans(target.target))
{
clear_messages();
if (you.trans_wall_blocking(target.target))
canned_msg(MSG_SOMETHING_IN_WAY);
else
canned_msg(MSG_CANNOT_SEE);
continue;
}
if (cancel_harmful_move(physical))
{
clear_messages();
continue;
}
return true;
}
}
void wizard_blink()
{
// query for location {dlb}:
direction_chooser_args args;
args.restricts = DIR_TARGET;
args.needs_path = false;
targeter_smite tgt(&you, LOS_RADIUS);
tgt.obeys_mesmerise = false;
args.hitfunc = &tgt;
args.top_prompt = "Blink to where?";
dist beam;
direction(beam, args);
if (!beam.isValid || beam.target == you.pos())
{
canned_msg(MSG_OK);
return;
}
if (!in_bounds(beam.target))
{
clear_messages();
mpr("Please don't blink into the map border.");
return wizard_blink();
}
if (monster_at(beam.target))
{
clear_messages();
mpr("Please don't try to blink into monsters.");
return wizard_blink();
}
if (!check_moveto(beam.target, "blink", false))
{
return wizard_blink();
// try again (messages handled by check_moveto)
}
// Allow wizard blink to send player into walls, in case the
// user wants to alter that grid to something else.
if (cell_is_solid(beam.target))
env.grid(beam.target) = DNGN_FLOOR;
move_player_to_grid(beam.target, false);
}
static const int HOP_FUZZ_RADIUS = 2;
/**
* Randomly choose one of the spaces near the given target for the player's hop
* to land on.
*
* @param target The tile the player wants to land on.
* @return A nearby, unoccupied, inhabitable tile.
*/
static coord_def _fuzz_hop_destination(coord_def target)
{
coord_def chosen;
int seen = 0;
for (radius_iterator ri(target, HOP_FUZZ_RADIUS, C_SQUARE, LOS_NO_TRANS);
ri; ++ri)
{
if (valid_blink_destination(&you, *ri) && one_chance_in(++seen))
chosen = *ri;
}
return chosen;
}
int frog_hop_range()
{
return 2 + you.get_mutation_level(MUT_HOP) * 2; // 4-6
}
/**
* Attempt to hop the player to a space near a tile of their choosing.
*
* @param fail Whether this came from a mis-invoked ability (& should
* therefore fail after selecting a target)
* @return Whether the hop succeeded, aborted, or was miscast.
*/
spret frog_hop(bool fail, dist *target)
{
dist empty;
if (!target)
target = ∅ // XX just convert some of these fn signatures to take dist &
const int hop_range = frog_hop_range();
targeter_smite tgt(&you, hop_range, 0, HOP_FUZZ_RADIUS);
tgt.obeys_mesmerise = true;
while (true)
{
if (!_find_cblink_target(*target, true, "hop", &tgt, true))
return spret::abort;
if (grid_distance(you.pos(), target->target) > hop_range)
{
mpr("That's out of range!"); // ! targeting
continue;
}
break;
}
target->target = _fuzz_hop_destination(target->target);
fail_check();
if (!you.attempt_escape(2)) // XXX: 1?
return spret::success; // of a sort
// invisible monster that the targeter didn't know to avoid, or similar
if (target->target.origin())
{
mpr("You tried to hop, but there was no room to land!");
// TODO: what to do here?
return spret::success; // of a sort
}
if (!cell_is_solid(you.pos())) // should be safe.....
place_cloud(CLOUD_DUST, you.pos(), 2 + random2(3), &you);
move_player_to_grid(target->target, false);
crawl_state.cancel_cmd_again();
crawl_state.cancel_cmd_repeat();
mpr("Boing!");
you.increase_duration(DUR_NO_HOP, 12 + random2(13));
apply_barbs_damage();
return spret::success; // TODO
}
static bool _check_charge_through(coord_def pos)
{
if (!you.can_pass_through_feat(env.grid(pos)))
{
clear_messages();
mprf("You can't roll into that!");
return false;
}
return true;
}
static bool _find_charge_target(vector<coord_def> &target_path, int max_range,
targeter *hitfunc, dist *target)
{
// Check for unholy weapons, breadswinging, etc
if (!wielded_weapon_check(you.weapon(), "roll"))
return false;
const bool interactive = target && target->interactive;
dist targ_local;
if (!target)
target = &targ_local;
// TODO: can't this all be done within a single direction call?
while (true)
{
// query for location {dlb}:
direction_chooser_args args;
args.restricts = DIR_TARGET;
args.mode = TARG_HOSTILE;
args.prefer_farthest = true;
args.top_prompt = "Roll where?";
args.hitfunc = hitfunc;
direction(*target, args);
// TODO: deduplicate with _find_cblink_target
if (crawl_state.seen_hups)
{
mpr("Cancelling rolling charge due to HUP.");
return false;
}
if (!target->isValid || target->target == you.pos())
{
canned_msg(MSG_OK);
return false;
}
const monster* beholder = you.get_beholder(target->target);
if (beholder)
{
mprf("You cannot roll away from %s!",
beholder->name(DESC_THE, true).c_str());
if (interactive)
continue;
else
return false;
}
const monster* fearmonger = you.get_fearmonger(target->target);
if (fearmonger)
{
mprf("You cannot roll closer to %s!",
fearmonger->name(DESC_THE, true).c_str());
if (interactive)
continue;
else
return false;
}
if (!you.see_cell_no_trans(target->target))
{
clear_messages();
if (you.trans_wall_blocking(target->target))
canned_msg(MSG_SOMETHING_IN_WAY);
else
canned_msg(MSG_CANNOT_SEE);
if (interactive)
continue;
else
return false;
}
if (grid_distance(you.pos(), target->target) > max_range)
{
mpr("That's out of range!"); // ! targeting
if (interactive)
continue;
else
return false;
}
ray_def ray;
if (!find_ray(you.pos(), target->target, ray, opc_solid))
{
mpr("You can't roll through that!");
if (interactive)
continue;
else
return false;
}
// done with hard vetos; now we're on a mix of prompts and vetos.
// (Ideally we'd like to split these up and do all the vetos before
// the prompts, but...)
target_path.clear();
bool ok = true;
while (ray.advance())
{
target_path.push_back(ray.pos());
if (!can_charge_through_mons(ray.pos()))
break;
ok = _check_charge_through(ray.pos());
if (ray.pos() == target->target || !ok)
break;
}
if (!ok)
{
if (interactive)
continue;
else
return false;
}
// DON'T use beam.target here - we might have used ! targeting to
// target something behind another known monster
const monster* target_mons = monster_at(ray.pos());
const string bad_charge = bad_charge_target(ray.pos());
if (bad_charge != "")
{
mpr(bad_charge.c_str());
return false;
}
if (adjacent(you.pos(), ray.pos()))
{
mprf("You're already next to %s!",
target_mons->name(DESC_THE).c_str());
return false;
}
// prompt to make sure the player really wants to attack the monster
// (if extant and not hostile)
// Intentionally don't use the real attack position here - that's only
// used for sanctuary,
// so it's more accurate if we use our current pos, since sanctuary
// should move with us.
if (stop_attack_prompt(target_mons, false, target_mons->pos()))
return false;
ray.regress();
// confirm movement for the final square only
if (!check_moveto(ray.pos(), "charge"))
return false;
return true;
}
}
static void _charge_cloud_trail(const coord_def pos)
{
if (!apply_cloud_trail(pos))
place_cloud(CLOUD_DUST, pos, 2 + random2(3), &you);
}
bool palentonga_charge_possible(bool quiet, bool allow_safe_monsters)
{
// general movement conditions are checked in ability.cc:_check_ability_possible
targeter_charge tgt(&you, palentonga_charge_range());
for (monster_near_iterator mi(&you); mi; ++mi)
if (tgt.valid_aim(mi->pos())
&& (allow_safe_monsters || !mons_is_safe(*mi, false) || mons_class_is_test(mi->type)))
{
return true;
}
if (!quiet)
mpr("There's nothing you can charge at!");
return false;
}
int palentonga_charge_range()
{
return 3 + you.get_mutation_level(MUT_ROLL);
}
/**
* Attempt to charge the player to a target of their choosing.
*
* @param fail Whether this came from a mis-invoked ability (& should
* therefore fail after selecting a target)
* @return Whether the charge succeeded, aborted, or was miscast.
*/
spret palentonga_charge(bool fail, dist *target)
{
const coord_def initial_pos = you.pos();
vector<coord_def> target_path;
targeter_charge tgt(&you, palentonga_charge_range());
if (!_find_charge_target(target_path, palentonga_charge_range(), &tgt, target))
return spret::abort;
fail_check();
if (!you.attempt_escape(1)) // prints its own messages
return spret::success;
const coord_def target_pos = target_path.back();
monster* target_mons = monster_at(target_pos);
if (fedhas_passthrough(target_mons))
target_mons = nullptr;
ASSERT(target_mons != nullptr);
// Are you actually moving forward?
if (grid_distance(you.pos(), target_pos) > 1 || !target_mons)
mpr("You roll forward with a clatter of scales!");
crawl_state.cancel_cmd_again();
crawl_state.cancel_cmd_repeat();
const coord_def orig_pos = you.pos();
for (coord_def pos : target_path)
{
monster* sneaky_mons = monster_at(pos);
if (sneaky_mons && !fedhas_passthrough(sneaky_mons))
{
target_mons = sneaky_mons;
break;
}
}
const coord_def dest_pos = target_path.at(target_path.size() - 2);
remove_water_hold();
move_player_to_grid(dest_pos, true);
noisy(12, you.pos());
apply_barbs_damage();
_charge_cloud_trail(orig_pos);
for (auto it = target_path.begin(); it != target_path.end() - 2; ++it)
_charge_cloud_trail(*it);
if (you.pos() != dest_pos) // polar vortex and trap nonsense
return spret::success; // of a sort
// Maybe we hit a trap and something weird happened.
if (!target_mons->alive() || !adjacent(you.pos(), target_mons->pos()))
return spret::success;
// manually apply noise
// this silence check feels kludgy - perhaps could check along the whole route..?
if (!silenced(target_pos))
behaviour_event(target_mons, ME_ALERT, &you, you.pos()); // shout + set you as foe
// We got webbed/netted at the destination, bail on the attack.
if (you.attribute[ATTR_HELD])
return spret::success;
const int base_delay =
div_rand_round(you.time_taken * player_movement_speed(), 10);
melee_attack charge_atk(&you, target_mons);
charge_atk.roll_dist = grid_distance(initial_pos, you.pos());
charge_atk.attack();
// Normally this is 10 aut (times haste, chei etc), but slow weapons
// take longer. Most relevant for low-skill players and Dark Maul.
you.time_taken = max(you.time_taken, base_delay);
return spret::success;
}
/**
* Attempt to blink the player to a nearby tile of their choosing. Doesn't
* handle you.no_tele().
*
* @param safe_cancel Whether it's OK to let the player cancel the control
* of the blink (or whether there should be a prompt -
* for e.g. read-identified ?blink)
* @return Whether the blink succeeded, aborted, or was miscast.
*/
spret controlled_blink(bool safe_cancel, dist *target)
{
if (crawl_state.is_replaying_keys())
{
crawl_state.cancel_cmd_all("You can't repeat controlled blinks.");
return spret::abort;
}
dist empty;
if (!target)
target = ∅
targeter_smite tgt(&you, LOS_RADIUS);
tgt.obeys_mesmerise = true;
if (!_find_cblink_target(*target, safe_cancel, "blink", &tgt))
return spret::abort;
if (!you.attempt_escape(2))
return spret::success; // of a sort
// invisible monster that the targeter didn't know to avoid
if (monster_at(target->target))
{
mpr("Oops! There was something there already!");
uncontrolled_blink();
return spret::success; // of a sort
}
_place_tloc_cloud(you.pos());
move_player_to_grid(target->target, false);
crawl_state.cancel_cmd_again();
crawl_state.cancel_cmd_repeat();
return spret::success;
}
/**
* Cast the player spell Blink.
*
* @param fail Whether the player miscast the spell.
* @return Whether the spell was successfully cast, aborted,
* or miscast.
*/
spret cast_blink(int pow, bool fail)
{
// effects that cast the spell through the player, I guess (e.g. xom)
if (you.no_tele(true))
return fail ? spret::fail : spret::success; // probably always SUCCESS
if (cancel_harmful_move(false))
return spret::abort;
fail_check();
uncontrolled_blink();
int cooldown = div_rand_round(50 - pow, 10);
if (cooldown)
you.increase_duration(DUR_BLINK_COOLDOWN, 1 + random2(2) + cooldown);
return spret::success;
}
void you_teleport()
{
// [Cha] here we block teleportation, which will save the player from
// death from read-id'ing scrolls (in sprint)
if (you.no_tele())
canned_msg(MSG_STRANGE_STASIS);
else if (you.duration[DUR_TELEPORT])
{
mpr("You feel strangely stable.");
you.duration[DUR_TELEPORT] = 0;
}
else
{
mpr("You feel strangely unstable.");
int teleport_delay = 3 + random2(3);
if (player_in_branch(BRANCH_ABYSS))
{
mpr("You feel the power of the Abyss delaying your translocation!");
teleport_delay += 5 + random2(10);
}
else if (orb_limits_translocation())
{
mprf(MSGCH_ORB, "You feel the Orb delaying your translocation!");
teleport_delay += 5 + random2(5);
}
you.set_duration(DUR_TELEPORT, teleport_delay);
}
}
// Should return true if we don't want anyone to teleport here.
bool cell_vetoes_teleport(const coord_def cell, bool check_monsters,
bool wizard_tele)
{
// Monsters always veto teleport.
if (monster_at(cell) && check_monsters)
return true;
// As do all clouds; this may change.
if (cloud_at(cell) && !wizard_tele)
return true;
if (cell_is_solid(cell))
return true;
return is_feat_dangerous(env.grid(cell), true) && !wizard_tele;
}
static void _handle_teleport_update(bool large_change, const coord_def old_pos)
{
if (large_change)
{
viewwindow();
update_screen();
for (monster_iterator mi; mi; ++mi)
{
const bool see_cell = you.see_cell(mi->pos());
if (mi->foe == MHITYOU && !see_cell && !you.penance[GOD_ASHENZARI])
{
mi->foe_memory = 0;
behaviour_event(*mi, ME_EVAL);
}
else if (see_cell)
behaviour_event(*mi, ME_EVAL);
}
}
#ifdef USE_TILE
if (you.has_innate_mutation(MUT_MERTAIL))
{
const dungeon_feature_type new_grid = env.grid(you.pos());
const dungeon_feature_type old_grid = env.grid(old_pos);
if (feat_is_water(old_grid) && !feat_is_water(new_grid)
|| !feat_is_water(old_grid) && feat_is_water(new_grid))
{
init_player_doll();
}
}
#else
UNUSED(old_pos);
#endif
you.clear_far_engulf();
}
static bool _teleport_player(bool wizard_tele, bool teleportitis,
string reason="")
{
if (!wizard_tele && !teleportitis
&& (crawl_state.game_is_sprint() || you.no_tele())
&& !player_in_branch(BRANCH_ABYSS))
{
if (!reason.empty())
mpr(reason);
canned_msg(MSG_STRANGE_STASIS);
return false;
}
// After this point, we're guaranteed to teleport. Kill the appropriate
// delays. Teleportitis needs to check the target square first, though.
if (!teleportitis)
interrupt_activity(activity_interrupt::teleport);
// Update what we can see at the current location as well as its stash,
// in case something happened in the exact turn that we teleported
// (like picking up/dropping an item).
viewwindow();
update_screen();
StashTrack.update_stash(you.pos());
if (player_in_branch(BRANCH_ABYSS) && !wizard_tele)
{
if (teleportitis)
return false;
if (!reason.empty())
mpr(reason);
abyss_teleport();
if (you.pet_target != MHITYOU)
you.pet_target = MHITNOT;
return true;
}
coord_def pos(1, 0);
const coord_def old_pos = you.pos();
bool large_change = false;
if (wizard_tele)
{
while (true)
{
level_pos lpos;
bool chose = show_map(lpos, false, false);
pos = lpos.pos;
redraw_screen();
update_screen();
// If we've received a HUP signal then the user can't choose a
// location, so cancel the teleport.
if (crawl_state.seen_hups)
{
mprf(MSGCH_ERROR, "Controlled teleport interrupted by HUP signal, "
"cancelling teleport.");
return false;
}
dprf("Target square (%d,%d)", pos.x, pos.y);
if (!chose || pos == you.pos())
return false;
break;
}
if (!you.see_cell(pos))
large_change = true;
if (cell_vetoes_teleport(pos, true, wizard_tele))
{
mprf(MSGCH_WARN, "Even you can't go there right now. Sorry!");
return false;
}
else
move_player_to_grid(pos, false);
}
else
{
coord_def newpos;
int tries = 500;
do
{
newpos = random_in_bounds();
}
while (--tries > 0
&& (cell_vetoes_teleport(newpos)
|| testbits(env.pgrid(newpos), FPROP_NO_TELE_INTO)));
// Running out of tries shouldn't happen; no message. Return false so
// it doesn't count as a random teleport for Xom purposes.
if (tries == 0)
return false;
// Teleportitis requires a monster in LOS of the new location, else
// it silently fails.
else if (teleportitis)
{
int mons_near_target = 0;
for (monster_near_iterator mi(newpos, LOS_NO_TRANS); mi; ++mi)
if (mons_is_threatening(**mi) && mons_attitude(**mi) == ATT_HOSTILE)
mons_near_target++;
if (!mons_near_target)
{
dprf("teleportitis: no monster near target");
return false;
}
else if (you.no_tele())
{
if (!reason.empty())
mpr(reason);
canned_msg(MSG_STRANGE_STASIS);
return false;
}
else
{
interrupt_activity(activity_interrupt::teleport);
if (!reason.empty())
mpr(reason);
mprf("You are yanked towards %s nearby monster%s!",
mons_near_target > 1 ? "some" : "a",
mons_near_target > 1 ? "s" : "");
}
}
if (newpos == old_pos)
mpr("Your surroundings flicker for a moment.");
else if (you.see_cell(newpos))
mpr("Your surroundings seem slightly different.");
else
{
mpr("Your surroundings suddenly seem different.");
large_change = true;
}
cancel_polar_vortex(true);
// Leave a purple cloud.
_place_tloc_cloud(old_pos);
move_player_to_grid(newpos, false);
stop_delay(true);
}
_handle_teleport_update(large_change, old_pos);
return !wizard_tele;
}
bool you_teleport_to(const coord_def where_to, bool move_monsters)
{
// Attempts to teleport the player from their current location to 'where'.
// Follows this line of reasoning:
// 1. Check the location (against cell_vetoes_teleport), if valid,
// teleport the player there.
// 2. If not because of a monster, and move_monster, teleport that
// monster out of the way, then teleport the player there.
// 3. Otherwise, iterate over adjacent squares. If a sutiable position is
// found (or a monster can be moved out of the way, with move_monster)
// then teleport the player there.
// 4. If not, give up and return false.
const coord_def old_pos = you.pos();
coord_def where = where_to;
coord_def old_where = where_to;
// Don't bother to calculate a possible new position if it's out of bounds.
if (!in_bounds(where))
return false;
if (cell_vetoes_teleport(where))
{
if (monster_at(where) && move_monsters && !cell_vetoes_teleport(where, false))
{
// dlua only, don't heed no_tele
monster* mons = monster_at(where);
mons->teleport(true);
}
else
{
for (adjacent_iterator ai(where); ai; ++ai)
{
if (!cell_vetoes_teleport(*ai))
{