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field.cpp
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#include "rng.h"
#include "map.h"
#include "field.h"
#include "game.h"
#include "monstergenerator.h"
#define INBOUNDS(x, y) \
(x >= 0 && x < SEEX * my_MAPSIZE && y >= 0 && y < SEEY * my_MAPSIZE)
bool vector_has(std::vector <item> vec, itype_id type);
field_t fieldlist[num_fields];
void game::init_fields()
{
field_t tmp_fields[num_fields] =
{
{
{"", "", ""}, '%',
{c_white, c_white, c_white}, {true, true, true}, {false, false, false}, 0,
{0,0,0}
},
{
{_("blood splatter"), _("blood stain"), _("puddle of blood")}, '%',
{c_red, c_red, c_red}, {true, true, true}, {false, false, false}, 2500,
{0,0,0}
},
{
{_("bile splatter"), _("bile stain"), _("puddle of bile")}, '%',
{c_pink, c_pink, c_pink}, {true, true, true}, {false, false, false}, 2500,
{0,0,0}
},
{
{_("scraps of flesh"), _("bloody meat chunks"), _("heap of gore")}, '~',
{c_brown, c_ltred, c_red}, {true, true, true}, {false, false, false}, 2500,
{0,0,0}
},
{
{_("shredded leaves and twigs"), _("shattered branches and leaves"), _("broken vegetation tangle")}, '~',
{c_ltgreen, c_ltgreen, c_green}, {true, true, true}, {false, false, false}, 2500,
{0,0,0}
},
{
{_("cobwebs"),_("webs"), _("thick webs")}, '}',
{c_white, c_white, c_white}, {true, true, false},{false, false, false}, 0,
{0,0,0}
},
{
{_("slime trail"), _("slime stain"), _("puddle of slime")}, '%',
{c_ltgreen, c_ltgreen, c_green},{true, true, true},{false, false, false}, 2500,
{0,0,0}
},
{
{_("acid splatter"), _("acid streak"), _("pool of acid")}, '5',
{c_ltgreen, c_green, c_green}, {true, true, true}, {true, true, true}, 10,
{0,0,0}
},
{
{_("sap splatter"), _("glob of sap"), _("pool of sap")}, '5',
{c_yellow, c_brown, c_brown}, {true, true, true}, {true, true, true}, 20,
{0,0,0}
},
{
{_("thin sludge trail"), _("sludge trail"), _("thick sludge trail")}, '5',
{c_ltgray, c_dkgray, c_black}, {true, true, true}, {false, false, false}, 900,
{0,0,0}
},
{
{_("small fire"), _("fire"), _("raging fire")}, '4',
{c_yellow, c_ltred, c_red}, {true, true, true}, {true, true, true}, 800,
{0,0,0}
},
{
{_("rubble heap"), _("rubble pile"), _("mountain of rubble")}, '#',
{c_dkgray, c_dkgray, c_dkgray}, {true, true, false},{false, false, false}, 0,
{0,0,0}
},
{
{_("thin smoke"), _("smoke"), _("thick smoke")}, '8',
{c_white, c_ltgray, c_dkgray}, {true, false, false},{false, true, true}, 300,
{0,0,0}
},
{
{_("hazy cloud"),_("toxic gas"),_("thick toxic gas")}, '8',
{c_white, c_ltgreen, c_green}, {true, false, false},{false, true, true}, 900,
{0,0,0}
},
{
{_("hazy cloud"),_("tear gas"),_("thick tear gas")}, '8',
{c_white, c_yellow, c_brown}, {true, false, false},{true, true, true}, 600,
{0,0,0}
},
{
{_("hazy cloud"),_("radioactive gas"), _("thick radioactive gas")}, '8',
{c_white, c_ltgreen, c_green}, {true, true, false}, {true, true, true}, 1000,
{0,0,0}
},
{
{_("gas vent"), _("gas vent"), _("gas vent")}, '%',
{c_white, c_white, c_white}, {true, true, true}, {false, false, false}, 0,
{0,0,0}
},
{ // Fire Vents
{"", "", ""}, '&',
{c_white, c_white, c_white}, {true, true, true}, {false, false, false}, 0,
{0,0,0}
},
{
{_("fire"), _("fire"), _("fire")}, '5',
{c_red, c_red, c_red}, {true, true, true}, {true, true, true}, 0,
{0,0,0}
},
{
{_("sparks"), _("electric crackle"), _("electric cloud")}, '9',
{c_white, c_cyan, c_blue}, {true, true, true}, {true, true, true}, 2,
{0,0,0}
},
{
{_("odd ripple"), _("swirling air"), _("tear in reality")}, '*',
{c_ltgray, c_dkgray, c_magenta},{true, true, false},{false, false, false}, 0,
{0,0,0}
},
{ //Push Items
{"", "", ""}, '&',
{c_white, c_white, c_white}, {true, true, true}, {false, false, false}, 0,
{0,0,0}
},
{ // shock vents
{"", "", ""}, '&',
{c_white, c_white, c_white}, {true, true, true}, {false, false, false}, 0,
{0,0,0}
},
{ // acid vents
{"", "", ""}, '&',
{c_white, c_white, c_white}, {true, true, true}, {false, false, false}, 0,
{0,0,0}
},
{ // plasma glow (for plasma weapons)
{_("faint plasma"), _("glowing plasma"), _("burning plasma")}, '9',
{c_magenta, c_pink, c_white}, {true, true, true}, {false, false, false}, 2,
{0,0,0}
},
{ // laser beam (for laser weapons)
{_("faint glimmer"), _("beam of light"), _("intense beam of light")}, '#',
{c_blue, c_ltblue, c_white}, {true, true, true}, {false, false, false}, 1,
{0,0,0}
}
};
for(int i=0; i<num_fields; i++) {
fieldlist[i] = tmp_fields[i];
}
}
/*
Function: spread_gas
Helper function that encapsulates the logic involved in gas spread.
*/
static void spread_gas( map *m, field_entry *cur, int x, int y, field_id curtype,
int percent_spread, int outdoor_age_speedup )
{
// Reset nearby scents to zero
for (int i = -1; i <= 1; i++) {
for (int j = -1; j <= 1; j++) {
g->scent( x + i, y + j ) = 0;
}
}
// Dissapate faster outdoors.
if (m->is_outside(x, y)) { cur->setFieldAge( cur->getFieldAge() + outdoor_age_speedup ); }
// Bail out if we don't meet the spread chance.
if( rng(1, 100) > percent_spread ) { return; }
std::vector <point> spread;
// Pick all eligible points to spread to.
for( int a = -1; a <= 1; a++ ) {
for( int b = -1; b <= 1; b++ ) {
// Current field not a candidate.
if( !(a || b) ) { continue; }
field_entry* tmpfld = m->field_at( x + a, y + b ).findField( curtype );
// Candidates are existing non-max-strength fields or navigable tiles with no field.
if( ( tmpfld && tmpfld->getFieldDensity() < 3 ) ||
( !tmpfld && m->move_cost( x + a, y + b ) > 0 ) ) {
spread.push_back( point( x + a, y + b ) );
}
}
}
// Then, spread to a nearby point.
int current_density = cur->getFieldDensity();
if (current_density > 1 && cur->getFieldAge() > 0 && !spread.empty()) {
point p = spread[ rng( 0, spread.size() - 1 ) ];
field_entry *candidate_field = m->field_at(p.x, p.y).findField( curtype );
int candidate_density = candidate_field ? candidate_field->getFieldDensity() : 0;
// Nearby gas grows thicker.
if ( candidate_field ) {
candidate_field->setFieldDensity(candidate_density + 1);
cur->setFieldDensity(current_density - 1);
// Or, just create a new field.
} else if ( m->add_field( g, p.x, p.y, curtype, 1 ) ) {
cur->setFieldDensity( current_density - 1 );
}
}
}
bool map::process_fields(game *g)
{
bool found_field = false;
for (int x = 0; x < my_MAPSIZE; x++) {
for (int y = 0; y < my_MAPSIZE; y++) {
if (grid[x + y * my_MAPSIZE]->field_count > 0)
found_field |= process_fields_in_submap(g, x + y * my_MAPSIZE);
}
}
return found_field;
}
/*
Function: process_fields_in_submap
Iterates over every field on every tile of the given submap indicated by NONANT parameter gridn.
This is the general update function for field effects. This should only be called once per game turn.
If you need to insert a new field behavior per unit time add a case statement in the switch below.
*/
bool map::process_fields_in_submap(game *g, int gridn)
{
// Realistically this is always true, this function only gets called if fields exist.
bool found_field = false;
// A pointer to the current field effect.
// Used to modify or otherwise get information on the field effect to update.
field_entry *cur;
//Holds m.field_at(x,y).findField(fd_some_field) type returns.
// Just to avoid typing that long string for a temp value.
field_entry *tmpfld = NULL;
field_id curtype; //Holds cur->getFieldType() as thats what the old system used before rewrite.
bool skipIterIncr = false; // keep track on when not to increment it[erator]
//Loop through all tiles in this submap indicated by gridn
for (int locx = 0; locx < SEEX; locx++) {
for (int locy = 0; locy < SEEY; locy++) {
// This is a translation from local coordinates to submap coords.
// All submaps are in one long 1d array.
int x = locx + SEEX * (gridn % my_MAPSIZE);
int y = locy + SEEY * int(gridn / my_MAPSIZE);
// get a copy of the field variable from the submap;
// contains all the pointers to the real field effects.
field &curfield = grid[gridn]->fld[locx][locy];
for(std::map<field_id, field_entry *>::iterator it = curfield.getFieldStart();
it != curfield.getFieldEnd();) {
//Iterating through all field effects in the submap's field.
cur = it->second;
if(cur == NULL) {
continue; //This shouldn't happen ever, but pointer safety is number one.
}
curtype = cur->getFieldType();
//Setting our return value. fd_null really doesn't exist anymore, its there for legacy support.
if (!found_field && curtype != fd_null) {
found_field = true;
}
// Again, legacy support in the event someone Mods setFieldDensity to allow more values.
if (cur->getFieldDensity() > 3 || cur->getFieldDensity() < 1) {
debugmsg("Whoooooa density of %d", cur->getFieldDensity());
}
// Don't process "newborn" fields. This gives the player time to run if they need to.
if (cur->getFieldAge() == 0) {
curtype = fd_null;
}
int part;
vehicle *veh;
switch (curtype) {
case fd_null:
break; // Do nothing, obviously. OBVIOUSLY.
case fd_blood:
case fd_bile:
case fd_gibs_flesh:
case fd_gibs_veggy:
if (has_flag("SWIMMABLE", x, y)) { // Dissipate faster in water
cur->setFieldAge(cur->getFieldAge() + 250);
}
break;
case fd_acid:
if (has_flag("SWIMMABLE", x, y)) { // Dissipate faster in water
cur->setFieldAge(cur->getFieldAge() + 20);
}
for (int i = 0; i < i_at(x, y).size(); i++) {
item *melting = &(i_at(x, y)[i]); //For each item on the tile...
// see DEVELOPER_FAQ.txt for how acid resistance is calculated
int chance = melting->acid_resist();
if (chance == 0) {
melting->damage++;
} else if (chance > 0 && chance < 9) {
if (one_in(chance)) {
melting->damage++;
}
}
if (melting->damage >= 5) {
//Destroy the object, age the field.
cur->setFieldAge(cur->getFieldAge() + melting->volume());
for (int m = 0; m < i_at(x, y)[i].contents.size(); m++) {
i_at(x, y).push_back( i_at(x, y)[i].contents[m] );
}
i_at(x, y).erase(i_at(x, y).begin() + i);
i--;
}
}
break;
case fd_sap:
break;
case fd_sludge:
break;
// TODO-MATERIALS: use fire resistance
case fd_fire: {
// Consume items as fuel to help us grow/last longer.
bool destroyed = false; //Is the item destroyed?
// Volume, Smoke generation probability, consumed items count
int vol = 0, smoke = 0, consumed = 0;
for (int i = 0; i < i_at(x, y).size() && consumed < cur->getFieldDensity() * 2; i++) {
//Stop when we hit the end of the item buffer OR we consumed enough items given our fire size.
destroyed = false;
item *it = &(i_at(x, y)[i]); //Pointer to the item we are dealing with.
vol = it->volume(); //Used to feed the fire based on volume of item burnt.
it_ammo *ammo_type = NULL; //Special case if its ammo.
if (it->is_ammo()) {
ammo_type = dynamic_cast<it_ammo *>(it->type);
}
//Flame type ammo removed so gasoline isn't explosive, it just burns.
if(ammo_type != NULL &&
(ammo_type->ammo_effects.count("INCENDIARY") ||
ammo_type->ammo_effects.count("EXPLOSIVE") ||
ammo_type->ammo_effects.count("FRAG") ||
ammo_type->ammo_effects.count("NAPALM") ||
ammo_type->ammo_effects.count("NAPALM_BIG") ||
ammo_type->ammo_effects.count("EXPLOSIVE_BIG") ||
ammo_type->ammo_effects.count("EXPLOSIVE_HUGE") ||
ammo_type->ammo_effects.count("TEARGAS") ||
ammo_type->ammo_effects.count("SMOKE") ||
ammo_type->ammo_effects.count("SMOKE_BIG") ||
ammo_type->ammo_effects.count("FLASHBANG") ||
ammo_type->ammo_effects.count("COOKOFF"))) {
//Any kind of explosive ammo (IE: not arrows and pebbles and such)
const int rounds_exploded = rng(1, it->charges);
// TODO: Vary the effect based on the ammo flag instead of just exploding them all.
// cook off ammo instead of just burning it.
for(int j = 0; j < (rounds_exploded / 10) + 1; j++) {
//Blow up with half the ammos damage in force, for each bullet.
g->explosion(x, y, ammo_type->damage / 2, true, false);
}
it->charges -= rounds_exploded; //Get rid of the spent ammo.
if(it->charges == 0) {
destroyed = true; //No more ammo, item should be removed.
}
} else if (it->made_of("paper")) {
//paper items feed the fire moderatly.
destroyed = it->burn(cur->getFieldDensity() * 3);
consumed++;
if (cur->getFieldDensity() == 1) {
cur->setFieldAge(cur->getFieldAge() - vol * 10); //lower age is a longer lasting fire
}
if (vol >= 4) {
smoke++; //Large paper items give chance to smoke.
}
} else if ((it->made_of("wood") || it->made_of("veggy"))) {
//Wood or vegy items burn slowly.
if (vol <= cur->getFieldDensity() * 10 ||
cur->getFieldDensity() == 3) {
// A single wood item will just maintain at the current level.
cur->setFieldAge(cur->getFieldAge() - 1);
if( one_in(50) ) {
destroyed = it->burn(cur->getFieldDensity());
}
smoke++;
consumed++;
} else if (it->burnt < cur->getFieldDensity()) {
destroyed = it->burn(1);
smoke++;
}
} else if ((it->made_of("cotton") || it->made_of("wool"))) {
//Cotton and Wool burn slowly but don't feed the fire much.
if (vol <= cur->getFieldDensity() * 5 || cur->getFieldDensity() == 3) {
cur->setFieldAge(cur->getFieldAge() - 1);
destroyed = it->burn(cur->getFieldDensity());
smoke++;
consumed++;
} else if (it->burnt < cur->getFieldDensity()) {
destroyed = it->burn(1);
smoke++;
}
} else if ((it->made_of("flesh")) || (it->made_of("hflesh"))) {
//Same as cotton/wool really but more smokey.
if (vol <= cur->getFieldDensity() * 5 || (cur->getFieldDensity() == 3 && one_in(vol / 20))) {
cur->setFieldAge(cur->getFieldAge() - 1);
destroyed = it->burn(cur->getFieldDensity());
smoke += 3;
consumed++;
} else if (it->burnt < cur->getFieldDensity() * 5 || cur->getFieldDensity() >= 2) {
destroyed = it->burn(1);
smoke++;
}
} else if (it->made_of(LIQUID)) {
//Lots of smoke if alcohol, and LOTS of fire fueling power, kills a fire otherwise.
if(it->type->id == "tequila" || it->type->id == "whiskey" ||
it->type->id == "vodka" || it->type->id == "rum" || it->type->id == "gasoline") {
cur->setFieldAge(cur->getFieldAge() - 300);
smoke += 6;
} else {
cur->setFieldAge(cur->getFieldAge() + rng(80 * vol, 300 * vol));
smoke++;
}
it->charges -= cur->getFieldDensity();
if(it->charges <= 0) {
destroyed = true;
}
consumed++;
} else if (it->made_of("powder")) {
//Any powder will fuel the fire as much as its volume but be immediately destroyed.
cur->setFieldAge(cur->getFieldAge() - vol);
destroyed = true;
smoke += 2;
} else if (it->made_of("plastic")) {
//Smokey material, doesn't fuel well.
smoke += 3;
if (it->burnt <= cur->getFieldDensity() * 2 || (cur->getFieldDensity() == 3 && one_in(vol))) {
destroyed = it->burn(cur->getFieldDensity());
if (one_in(vol + it->burnt)) {
cur->setFieldAge(cur->getFieldAge() - 1);
}
}
}
if (destroyed) {
//If we decided the item was destroyed by fire, remove it.
for (int m = 0; m < i_at(x, y)[i].contents.size(); m++) {
i_at(x, y).push_back( i_at(x, y)[i].contents[m] );
}
i_at(x, y).erase(i_at(x, y).begin() + i);
i--;
}
}
veh = veh_at(x, y, part); //Get the part of the vehicle in the fire.
if (veh) {
veh->damage (part, cur->getFieldDensity() * 10, false); //Damage the vehicle in the fire.
}
// If the flames are in a brazier, they're fully contained, so skip consuming terrain
if((tr_brazier != tr_at(x, y)) && (has_flag("FIRE_CONTAINER", x, y) != true )) {
// Consume the terrain we're on
if (has_flag("EXPLODES", x, y)) {
//This is what destroys houses so fast.
ter_set(x, y, ter_id(int(ter(x, y)) + 1));
cur->setFieldAge(0); //Fresh level 3 fire.
cur->setFieldDensity(3);
g->explosion(x, y, 40, 0, true); //Boom.
} else if (has_flag("FLAMMABLE", x, y) && one_in(32 - cur->getFieldDensity() * 10)) {
//The fire feeds on the ground itself until max density.
cur->setFieldAge(cur->getFieldAge() - cur->getFieldDensity() * cur->getFieldDensity() * 40);
smoke += 15;
if (cur->getFieldDensity() == 3) {
g->m.destroy(g, x, y, false);
}
} else if (has_flag("FLAMMABLE_ASH", x, y) && one_in(32 - cur->getFieldDensity() * 10)) {
//The fire feeds on the ground itself until max density.
cur->setFieldAge(cur->getFieldAge() - cur->getFieldDensity() * cur->getFieldDensity() * 40);
smoke += 15;
if (cur->getFieldDensity() == 3 || cur->getFieldAge() < -600) {
ter_set(x, y, t_ash);
if(has_furn(x, y)) {
furn_set(x, y, f_null);
}
}
} else if (has_flag("FLAMMABLE_HARD", x, y) && one_in(62 - cur->getFieldDensity() * 10)) {
//The fire feeds on the ground itself until max density.
cur->setFieldAge(cur->getFieldAge() - cur->getFieldDensity() * cur->getFieldDensity() * 30);
smoke += 10;
if (cur->getFieldDensity() == 3 || cur->getFieldAge() < -600) {
g->m.destroy(g, x, y, false);
}
} else if (terlist[ter(x, y)].has_flag("SWIMMABLE")) {
cur->setFieldAge(cur->getFieldAge() + 800); // Flames die quickly on water
}
}
// If the flames are in a pit, it can't spread to non-pit
bool in_pit = (ter(x, y) == t_pit);
// If the flames are REALLY big, they contribute to adjacent flames
if (cur->getFieldAge() < 0 && tr_brazier != tr_at(x, y) &&
(has_flag("FIRE_CONTAINER", x, y) != true ) ) {
if(cur->getFieldDensity() == 3) {
// Randomly offset our x/y shifts by 0-2, to randomly pick a square to spread to
int starti = rng(0, 2);
int startj = rng(0, 2);
tmpfld = NULL;
// Basically: Scan around for a spot,
// if there is more fire there, make it bigger and both flames renew in power
// This is how level 3 fires spend their excess age: making other fires bigger. Flashpoint.
for (int i = 0; i < 3 && cur->getFieldAge() < 0; i++) {
for (int j = 0; j < 3 && cur->getFieldAge() < 0; j++) {
int fx = x + ((i + starti) % 3) - 1, fy = y + ((j + startj) % 3) - 1;
tmpfld = field_at(fx, fy).findField(fd_fire);
if (tmpfld && tmpfld != cur && cur->getFieldAge() < 0 && tmpfld->getFieldDensity() < 3 &&
(in_pit == (ter(fx, fy) == t_pit))) {
tmpfld->setFieldDensity(tmpfld->getFieldDensity() + 1);
cur->setFieldAge(cur->getFieldAge() + 150);
}
}
}
} else {
// See if we can grow into a stage 2/3 fire, for this
// burning neighbours are necessary in addition to
// field age < 0, or alternatively, a LOT of fuel.
// The maximum fire density is 1 for a lone fire, 2 for at least 1 neighbour,
// 3 for at least 2 neighbours.
int maximum_density = 1;
// The following logic looks a bit complex due to optimization concerns, so here are the semantics:
// 1. Calculate maximum field density based on fuel, -500 is 2(raging), -1000 is 3(inferno)
// 2. Calculate maximum field density based on neighbours, 1 neighbours is 2(raging), 2 or more neighbours is 3(inferno)
// 3. Pick the higher maximum between 1. and 2.
// We don't just calculate both maximums and pick the higher because the adjacent field lookup is quite expensive and should be avoided if possible.
if(cur->getFieldAge() < -1500) {
maximum_density = 3;
} else {
int adjacent_fires = 0;
for (int i = 0; i < 3; i++) {
for (int j = 0; j < 3; j++) {
int fx = x + (i % 3) - 1, fy = y + (j % 3) - 1;
tmpfld = field_at(fx, fy).findField(fd_fire);
if (tmpfld && tmpfld != cur) {
adjacent_fires++;
}
}
}
maximum_density = 1 + (adjacent_fires >= 1) + (adjacent_fires >= 2);
if(maximum_density < 2 && cur->getFieldAge() < -500) {
maximum_density = 2;
}
}
// If we consumed a lot, the flames grow higher
while (cur->getFieldDensity() < maximum_density && cur->getFieldAge() < 0) {
//Fires under 0 age grow in size. Level 3 fires under 0 spread later on.
cur->setFieldAge(cur->getFieldAge() + 300);
cur->setFieldDensity(cur->getFieldDensity() + 1);
}
}
}
// Consume adjacent fuel / terrain / webs to spread.
// Randomly offset our x/y shifts by 0-2, to randomly pick a square to spread to
//Fires can only spread under 30 age. This is arbitrary but seems to work well.
//The reason is to differentiate a fire that spawned vs one created really.
//Fires spawned by fire in a new square START at 30 age, so if its a square with no fuel on it
//the fire won't keep crawling endlessly across the map.
int starti = rng(0, 2);
int startj = rng(0, 2);
for (int i = 0; i < 3; i++) {
for (int j = 0; j < 3; j++) {
int fx = x + ((i + starti) % 3) - 1, fy = y + ((j + startj) % 3) - 1;
if (INBOUNDS(fx, fy)) {
field &nearby_field = g->m.field_at(fx, fy);
field_entry *nearwebfld = nearby_field.findField(fd_web);
int spread_chance = 25 * (cur->getFieldDensity() - 1);
if (nearwebfld) {
spread_chance = 50 + spread_chance / 2;
}
if (has_flag("EXPLODES", fx, fy) && one_in(8 - cur->getFieldDensity()) &&
tr_brazier != tr_at(x, y) && (has_flag("FIRE_CONTAINER", x, y) != true ) ) {
ter_set(fx, fy, ter_id(int(ter(fx, fy)) + 1));
g->explosion(fx, fy, 40, 0, true); //Nearby explodables? blow em up.
} else if ((i != 0 || j != 0) && rng(1, 100) < spread_chance && cur->getFieldAge() < 200 &&
tr_brazier != tr_at(x, y) &&
(has_flag("FIRE_CONTAINER", x, y) != true ) &&
(in_pit == (ter(fx, fy) == t_pit)) &&
(
(cur->getFieldDensity() >= 2 &&
(has_flag("FLAMMABLE", fx, fy) && one_in(20))) ||
(cur->getFieldDensity() >= 2 &&
(has_flag("FLAMMABLE_ASH", fx, fy) && one_in(10))) ||
(cur->getFieldDensity() == 3 &&
(has_flag("FLAMMABLE_HARD", fx, fy) && one_in(10))) ||
flammable_items_at(fx, fy) ||
nearwebfld )) {
add_field(g, fx, fy, fd_fire, 1); //Nearby open flammable ground? Set it on fire.
tmpfld = nearby_field.findField(fd_fire);
if(tmpfld) {
tmpfld->setFieldAge(100);
cur->setFieldAge(cur->getFieldAge() + 50);
}
if(nearwebfld) {
if (fx == x && fy == y){
it = nearby_field.removeField(fd_web);
skipIterIncr = true;
} else {
nearby_field.removeField(fd_web);
}
}
} else {
bool nosmoke = true;
for (int ii = -1; ii <= 1; ii++) {
for (int jj = -1; jj <= 1; jj++) {
field &spreading_field = g->m.field_at(x + ii, y + jj);
tmpfld = spreading_field.findField(fd_fire);
int tmpflddens = ( tmpfld ? tmpfld->getFieldDensity() : 0 );
if ( ( tmpflddens == 3 ) || ( tmpflddens == 2 && one_in(4) ) ) {
smoke++; //The higher this gets, the more likely for smoke.
} else if (spreading_field.findField(fd_smoke)) {
nosmoke = false; //slightly, slightly, less likely to make smoke if there is already smoke
}
}
}
// If we're not spreading, maybe we'll stick out some smoke, huh?
if(!(is_outside(fx, fy))) {
//Lets make more smoke indoors since it doesn't dissipate
smoke += 10; //10 is just a magic number. To much smoke indoors? Lower it. To little, raise it.
}
if (move_cost(fx, fy) > 0 &&
(rng(0, 100) <= smoke || (nosmoke && one_in(40))) &&
rng(3, 35) < cur->getFieldDensity() * 5 && cur->getFieldAge() < 1000 &&
(has_flag("SUPPRESS_SMOKE", x, y) != true )) {
smoke--;
add_field(g, fx, fy, fd_smoke, rng(1, cur->getFieldDensity())); //Add smoke!
}
}
}
}
}
}
break;
case fd_smoke:
spread_gas( this, cur, x, y, curtype, 80, 50 );
break;
case fd_tear_gas:
spread_gas( this, cur, x, y, curtype, 33, 30 );
break;
case fd_toxic_gas:
spread_gas( this, cur, x, y, curtype, 50, 30 );
break;
case fd_nuke_gas:
radiation(x, y) += rng(0, cur->getFieldDensity());
spread_gas( this, cur, x, y, curtype, 50, 10 );
break;
case fd_gas_vent:
for (int i = x - 1; i <= x + 1; i++) {
for (int j = y - 1; j <= y + 1; j++) {
field &wandering_field = field_at(i, j);
tmpfld = NULL;
tmpfld = wandering_field.findField(fd_toxic_gas);
if (tmpfld && tmpfld->getFieldDensity() < 3) {
tmpfld->setFieldDensity(tmpfld->getFieldDensity() + 1);
} else {
add_field(g, i, j, fd_toxic_gas, 3);
}
}
}
break;
case fd_fire_vent:
if (cur->getFieldDensity() > 1) {
if (one_in(3)) {
cur->setFieldDensity(cur->getFieldDensity() - 1);
}
} else {
it = curfield.replaceField(fd_fire_vent, fd_flame_burst);
cur->setFieldDensity(3);
continue;
}
break;
case fd_flame_burst:
if (cur->getFieldDensity() > 1) {
cur->setFieldDensity(cur->getFieldDensity() - 1);
} else {
it = curfield.replaceField(fd_flame_burst, fd_fire_vent);
cur->setFieldDensity(3);
continue;
}
break;
case fd_electricity:
if (!one_in(5)) { // 4 in 5 chance to spread
std::vector<point> valid;
if (move_cost(x, y) == 0 && cur->getFieldDensity() > 1) { // We're grounded
int tries = 0;
while (tries < 10 && cur->getFieldAge() < 50 && cur->getFieldDensity() > 1) {
int cx = x + rng(-1, 1), cy = y + rng(-1, 1);
if (move_cost(cx, cy) != 0) {
add_field(g, point(cx, cy), fd_electricity, 1, cur->getFieldAge() + 1);
cur->setFieldDensity(cur->getFieldDensity() - 1);
tries = 0;
} else {
tries++;
}
}
} else { // We're not grounded; attempt to ground
for (int a = -1; a <= 1; a++) {
for (int b = -1; b <= 1; b++) {
if (move_cost(x + a, y + b) == 0) // Grounded tiles first
{
valid.push_back(point(x + a, y + b));
}
}
}
if (valid.empty()) { // Spread to adjacent space, then
int px = x + rng(-1, 1), py = y + rng(-1, 1);
if (move_cost(px, py) > 0 && field_at(px, py).findField(fd_electricity) &&
field_at(px, py).findField(fd_electricity)->getFieldDensity() < 3) {
field_at(px, py).findField(fd_electricity)->setFieldDensity(field_at(px,
py).findField(fd_electricity)->getFieldDensity() + 1);
cur->setFieldDensity(cur->getFieldDensity() - 1);
} else if (move_cost(px, py) > 0) {
add_field(g, point(px, py), fd_electricity, 1, cur->getFieldAge() + 1);
}
cur->setFieldDensity(cur->getFieldDensity() - 1);
}
while (!valid.empty() && cur->getFieldDensity() > 1) {
int index = rng(0, valid.size() - 1);
add_field(g, valid[index], fd_electricity, 1, cur->getFieldAge() + 1);
cur->setFieldDensity(cur->getFieldDensity() - 1);
valid.erase(valid.begin() + index);
}
}
}
break;
case fd_fatigue:{
std::string monids[9] = {"mon_flying_polyp", "mon_hunting_horror", "mon_mi_go", "mon_yugg", "mon_gelatin", "mon_flaming_eye", "mon_kreck", "mon_gracke", "mon_blank"};
if (cur->getFieldDensity() < 3 && int(g->turn) % 3600 == 0 && one_in(10)) {
cur->setFieldDensity(cur->getFieldDensity() + 1);
} else if (cur->getFieldDensity() == 3 && one_in(600)) { // Spawn nether creature!
std::string type = monids[(rng(0, 9))];
monster creature(GetMType(type));
creature.spawn(x + rng(-3, 3), y + rng(-3, 3));
g->add_zombie(creature);
}
}
break;
case fd_push_items: {
std::vector<item> *it = &(i_at(x, y));
for (int i = 0; i < it->size(); i++) {
if ((*it)[i].type->id != "rock" || (*it)[i].bday >= int(g->turn) - 1) {
i++;
} else {
item tmp = (*it)[i];
tmp.bday = int(g->turn);
it->erase(it->begin() + i);
i--;
std::vector<point> valid;
for (int xx = x - 1; xx <= x + 1; xx++) {
for (int yy = y - 1; yy <= y + 1; yy++) {
if (field_at(xx, yy).findField(fd_push_items)) {
valid.push_back( point(xx, yy) );
}
}
}
if (!valid.empty()) {
point newp = valid[rng(0, valid.size() - 1)];
add_item(newp.x, newp.y, tmp);
if (g->u.posx == newp.x && g->u.posy == newp.y) {
g->add_msg(_("A %s hits you!"), tmp.tname().c_str());
g->u.hit(g, random_body_part(), rng(0, 1), 6, 0);
}
int npcdex = g->npc_at(newp.x, newp.y),
mondex = g->mon_at(newp.x, newp.y);
if (npcdex != -1) {
npc *p = g->active_npc[npcdex];
p->hit(g, random_body_part(), rng(0, 1), 6, 0);
if (g->u_see(newp.x, newp.y)) {
g->add_msg(_("A %s hits %s!"), tmp.tname().c_str(), p->name.c_str());
}
}
if (mondex != -1) {
monster *mon = &(g->zombie(mondex));
mon->hurt(6 - mon->armor_bash());
if (g->u_see(newp.x, newp.y))
g->add_msg(_("A %s hits the %s!"), tmp.tname().c_str(),
mon->name().c_str());
}
}
}
}
}
break;
case fd_shock_vent:
if (cur->getFieldDensity() > 1) {
if (one_in(5)) {
cur->setFieldDensity(cur->getFieldDensity() - 1);
}
} else {
cur->setFieldDensity(3);
int num_bolts = rng(3, 6);
for (int i = 0; i < num_bolts; i++) {
int xdir = 0, ydir = 0;
while (xdir == 0 && ydir == 0) {
xdir = rng(-1, 1);
ydir = rng(-1, 1);
}
int dist = rng(4, 12);
int boltx = x, bolty = y;
for (int n = 0; n < dist; n++) {
boltx += xdir;
bolty += ydir;
add_field(g, boltx, bolty, fd_electricity, rng(2, 3));
if (one_in(4)) {
if (xdir == 0) {
xdir = rng(0, 1) * 2 - 1;
} else {
xdir = 0;
}
}
if (one_in(4)) {
if (ydir == 0) {
ydir = rng(0, 1) * 2 - 1;
} else {
ydir = 0;
}
}
}
}
}
break;
case fd_acid_vent:
if (cur->getFieldDensity() > 1) {
if (cur->getFieldAge() >= 10) {
cur->setFieldDensity(cur->getFieldDensity() - 1);
cur->setFieldAge(0);
}
} else {
cur->setFieldDensity(3);
for (int i = x - 5; i <= x + 5; i++) {
for (int j = y - 5; j <= y + 5; j++) {
field &wandering_field = g->m.field_at(i, j);
if (wandering_field.findField(fd_acid)) {
if (wandering_field.findField(fd_acid)->getFieldDensity() == 0) {
int newdens = 3 - (rl_dist(x, y, i, j) / 2) + (one_in(3) ? 1 : 0);
if (newdens > 3) {
newdens = 3;
}
if (newdens > 0) {
add_field(g, i, j, fd_acid, newdens);
}
}
}
}
}
}
break;
} // switch (curtype)
cur->setFieldAge(cur->getFieldAge() + 1);
if (fieldlist[cur->getFieldType()].halflife > 0) {
bool should_dissipate = false;
if (cur->getFieldAge() > 0 &&
dice(2, cur->getFieldAge()) > fieldlist[cur->getFieldType()].halflife) {
cur->setFieldAge(0);
if(cur->getFieldDensity() == 1 || !cur->isAlive()) {
should_dissipate = true;
}
cur->setFieldDensity(cur->getFieldDensity() - 1);
}
if (should_dissipate == true || !cur->isAlive()) { // Totally dissapated.
grid[gridn]->field_count--;
it = grid[gridn]->fld[locx][locy].removeField(cur->getFieldType());
continue;
}
}
if (!skipIterIncr)
++it;
skipIterIncr = false;
}
}
}
return found_field;
}
//This entire function makes very little sense. Why are the rules the way they are? Why does walking into some things destroy them but not others?
/*
Function: step_in_field
Triggers any active abilities a field effect would have. Fire burns you, acid melts you, etc.
If you add a field effect that interacts with the player place a case statement in the switch here.
If you wish for a field effect to do something over time (propagate, interact with terrain, etc) place it in process_subfields
*/
void map::step_in_field(int x, int y, game *g)
{
// A copy of the current field for reference. Do not add fields to it, use map::add_field
field &curfield = field_at(x, y);
field_entry *cur = NULL; // The current field effect.
int veh_part; // vehicle part existing on this tile.
vehicle *veh = NULL; // Vehicle reference if there is one.
bool inside = false; // Are we inside?
// For use in determining if we are in a rubble square or not, for the disease effect
bool no_rubble = true;
//to modify power of a field based on... whatever is relevant for the effect.
int adjusted_intensity;
//If we are in a vehicle figure out if we are inside (reduces effects usually)
// and what part of the vehicle we need to deal with.
if (g->u.in_vehicle) {
veh = g->m.veh_at(x, y, veh_part);
inside = (veh && veh->is_inside(veh_part));
}
// Iterate through all field effects on this tile.
// When removing a field, do field_list_it = curfield.removeField(type) and continue
// This ensures proper iteration through the fields.
for(std::map<field_id, field_entry*>::iterator field_list_it = curfield.getFieldStart();
field_list_it != curfield.getFieldEnd();){
cur = field_list_it->second;
// Shouldn't happen unless you free memory of field entries manually
// (hint: don't do that)... Pointer safety.
if(cur == NULL) continue;
if (cur->getFieldType() == fd_rubble) {
//We found rubble, don't remove the players rubble disease at the end of function.
no_rubble = false;
}
//Do things based on what field effect we are currently in.
switch (cur->getFieldType()) {
case fd_null:
case fd_blood: // It doesn't actually do anything
case fd_bile: // Ditto
//break instead of return in the event of post-processing in the future;
// also we're in a loop now!
break;
case fd_web: {
//If we are in a web, can't walk in webs or are in a vehicle, get webbed maybe.
//Moving through multiple webs stacks the effect.
if (!g->u.has_trait("WEB_WALKER") && !g->u.in_vehicle) {
//between 5 and 15 minus your current web level.
int web = cur->getFieldDensity() * 5 - g->u.disease_duration("webbed");
if (web > 0) { g->u.add_disease("webbed", web); }
field_list_it = curfield.removeField( fd_web ); //Its spent.
continue;
//If you are in a vehicle destroy the web.
//It should of been destroyed when you ran over it anyway.