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Copy pathTile.cpp
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924 lines (840 loc) · 21.3 KB
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/*
* Copyright 2010-2013 OpenXcom Developers.
*
* This file is part of OpenXcom.
*
* OpenXcom is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* OpenXcom is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with OpenXcom. If not, see <http://www.gnu.org/licenses/>.
*/
#include "Tile.h"
#include "../Ruleset/MapData.h"
#include "../Ruleset/MapDataSet.h"
#include "../Engine/SurfaceSet.h"
#include "../Engine/Surface.h"
#include "../Engine/RNG.h"
#include "../Engine/Exception.h"
#include "BattleUnit.h"
#include "BattleItem.h"
#include "../Ruleset/RuleItem.h"
#include "../Ruleset/Armor.h"
#include "SerializationHelper.h"
namespace OpenXcom
{
/// How many bytes various fields use in a serialized tile. See header.
Tile::SerializationKey Tile::serializationKey =
{4, // index
2, // _mapDataSetID, four of these
2, // _mapDataID, four of these
1, // _fire
1, // _smoke
1, // one 8-bit bool field
4 + 2*4 + 2*4 + 1 + 1 + 1 // total bytes to save one tile
};
/**
* constructor
* @param pos Position.
*/
Tile::Tile(const Position& pos): _smoke(0), _fire(0), _explosive(0), _pos(pos), _unit(0), _animationOffset(0), _markerColor(0), _overlayMarkerColor(0), _visible(false), _preview(-1), _overlay(-1)
{
for (int i = 0; i < 4; ++i)
{
_objects[i] = 0;
_mapDataID[i] = -1;
_mapDataSetID[i] = -1;
_currentFrame[i] = 0;
}
for (int layer = 0; layer < LIGHTLAYERS; layer++)
{
_light[layer] = 0;
_lastLight[layer] = -1;
}
for (int i = 0; i < 3; ++i)
{
_discovered[i] = false;
}
}
/**
* destructor
*/
Tile::~Tile()
{
_inventory.clear();
}
/**
* Load the tile from a YAML node.
* @param node YAML node.
*/
void Tile::load(const YAML::Node &node)
{
//node["position"] >> _pos;
for (int i =0; i < 4; i++)
{
node["mapDataID"][i] >> _mapDataID[i];
node["mapDataSetID"][i] >> _mapDataSetID[i];
}
if(const YAML::Node *pName = node.FindValue("fire"))
{
*pName >> _fire;
}
else
{
_fire = 0;
}
if(const YAML::Node *pName = node.FindValue("smoke"))
{
*pName >> _smoke;
}
else
{
_smoke = 0;
}
if(const YAML::Node *pName = node.FindValue("discovered"))
{
(*pName)[0] >> _discovered[0];
(*pName)[1] >> _discovered[1];
(*pName)[2] >> _discovered[2];
}
if (const YAML::Node *pName = node.FindValue("openDoorWest"))
{
_currentFrame[1] = 7;
}
if (const YAML::Node *pName = node.FindValue("openDoorNorth"))
{
_currentFrame[2] = 7;
}
}
/**
* Load the tile from binary.
* @param buffer pointer to buffer.
*/
void Tile::loadBinary(Uint8 *buffer, Tile::SerializationKey& serKey)
{
_mapDataID[0] = unserializeInt(&buffer, serKey._mapDataID);
_mapDataID[1] = unserializeInt(&buffer, serKey._mapDataID);
_mapDataID[2] = unserializeInt(&buffer, serKey._mapDataID);
_mapDataID[3] = unserializeInt(&buffer, serKey._mapDataID);
_mapDataSetID[0] = unserializeInt(&buffer, serKey._mapDataSetID);
_mapDataSetID[1] = unserializeInt(&buffer, serKey._mapDataSetID);
_mapDataSetID[2] = unserializeInt(&buffer, serKey._mapDataSetID);
_mapDataSetID[3] = unserializeInt(&buffer, serKey._mapDataSetID);
_smoke = unserializeInt(&buffer, serKey._smoke);
_fire = unserializeInt(&buffer, serKey._fire);
Uint8 boolFields = unserializeInt(&buffer, serKey.boolFields);
_discovered[0] = (boolFields & 1) ? true : false;
_discovered[1] = (boolFields & 2) ? true : false;
_discovered[2] = (boolFields & 4) ? true : false;
_currentFrame[1] = (boolFields & 8) ? 7 : 0;
_currentFrame[2] = (boolFields & 0x10) ? 7 : 0;
}
/**
* Saves the tile to a YAML node.
* @param out YAML emitter.
*/
void Tile::save(YAML::Emitter &out) const
{
out << YAML::BeginMap;
out << YAML::Key << "position" << YAML::Value << _pos;
out << YAML::Key << "mapDataID" << YAML::Value << YAML::Flow;
out << YAML::BeginSeq << _mapDataID[0] << _mapDataID[1] << _mapDataID[2] << _mapDataID[3] << YAML::EndSeq;
out << YAML::Key << "mapDataSetID" << YAML::Value << YAML::Flow;
out << YAML::BeginSeq << _mapDataSetID[0] << _mapDataSetID[1] << _mapDataSetID[2] << _mapDataSetID[3] << YAML::EndSeq;
if (_smoke)
out << YAML::Key << "smoke" << YAML::Value << _smoke;
if (_fire)
out << YAML::Key << "fire" << YAML::Value << _fire;
if (_discovered[0] || _discovered[1] || _discovered[2])
{
out << YAML::Key << "discovered" << YAML::Value << YAML::Flow;
out << YAML::BeginSeq << _discovered[0] << _discovered[1] << _discovered[2] << YAML::EndSeq;
}
if (isUfoDoorOpen(1))
{
out << YAML::Key << "openDoorWest" << YAML::Value << true;
}
if (isUfoDoorOpen(2))
{
out << YAML::Key << "openDoorNorth" << YAML::Value << true;
}
out << YAML::EndMap;
}
/**
* Saves the tile to binary.
* @param buffer pointer to buffer.
*/
void Tile::saveBinary(Uint8** buffer) const
{
serializeInt(buffer, serializationKey._mapDataID, _mapDataID[0]);
serializeInt(buffer, serializationKey._mapDataID, _mapDataID[1]);
serializeInt(buffer, serializationKey._mapDataID, _mapDataID[2]);
serializeInt(buffer, serializationKey._mapDataID, _mapDataID[3]);
serializeInt(buffer, serializationKey._mapDataSetID, _mapDataSetID[0]);
serializeInt(buffer, serializationKey._mapDataSetID, _mapDataSetID[1]);
serializeInt(buffer, serializationKey._mapDataSetID, _mapDataSetID[2]);
serializeInt(buffer, serializationKey._mapDataSetID, _mapDataSetID[3]);
serializeInt(buffer, serializationKey._smoke, _smoke);
serializeInt(buffer, serializationKey._fire, _fire);
Uint8 boolFields = (_discovered[0]?1:0) + (_discovered[1]?2:0) + (_discovered[2]?4:0);
boolFields |= isUfoDoorOpen(1) ? 8 : 0; // west
boolFields |= isUfoDoorOpen(2) ? 0x10 : 0; // north?
serializeInt(buffer, serializationKey.boolFields, boolFields);
}
/**
* Get the MapData pointer of a part of the tile.
* @param part the part 0-3.
* @return pointer to mapdata
*/
MapData *Tile::getMapData(int part) const
{
if (part < 0 || part > 3)
{
throw Exception("unknown MapDataID part");
}
return _objects[part];
}
/**
* Set the MapData references of part 0 to 3.
* @param dat pointer to the data object
* @param newObjectID The ID in the total list of the objects of this battlegame.
* @param part the part number
*/
void Tile::setMapData(MapData *dat, int mapDataID, int mapDataSetID, int part)
{
_objects[part] = dat;
_mapDataID[part] = mapDataID;
_mapDataSetID[part] = mapDataSetID;
}
/**
* get the MapData references of part 0 to 3.
* @param part the part number
* @return the object ID
*/
void Tile::getMapData(int *mapDataID, int *mapDataSetID, int part) const
{
*mapDataID = _mapDataID[part];
*mapDataSetID = _mapDataSetID[part];
}
/**
* Gets whether this tile has no objects. Note that we can have a unit or smoke on this tile.
* @return bool True if there is nothing but air on this tile.
*/
bool Tile::isVoid() const
{
return _objects[0] == 0 && _objects[1] == 0 && _objects[2] == 0 && _objects[3] == 0 && _smoke == 0 && _inventory.size() == 0;
}
/**
* Get the TU cost to walk over a certain part of the tile.
* @param part
* @param movementType
* @return TU cost
*/
int Tile::getTUCost(int part, MovementType movementType) const
{
if (_objects[part])
{
if (_objects[part]->isUFODoor() && _currentFrame[part] != 1)
return 0;
if (_objects[part]->getBigWall() >= 4)
return 0;
return _objects[part]->getTUCost(movementType);
}
else
return 0;
}
/**
* Whether this tile has a floor or not. If no object defined as floor, it has no floor.
* @return bool
*/
bool Tile::hasNoFloor(Tile *tileBelow) const
{
if (tileBelow != 0 && tileBelow->getTerrainLevel() == -24)
return false;
if (_objects[MapData::O_FLOOR])
return _objects[MapData::O_FLOOR]->isNoFloor();
else
return true;
}
/**
* Whether this tile has a big wall.
* @return bool
*/
bool Tile::isBigWall() const
{
if (_objects[MapData::O_OBJECT])
return _objects[MapData::O_OBJECT]->getBigWall();
else
return false;
}
/**
* If an object stand on this tile, this returns how high the unit is it standing.
* @return the level in pixels
*/
int Tile::getTerrainLevel() const
{
int level = 0;
if (_objects[MapData::O_FLOOR])
level = _objects[MapData::O_FLOOR]->getTerrainLevel();
if (_objects[MapData::O_OBJECT])
level += _objects[MapData::O_OBJECT]->getTerrainLevel();
return level;
}
/**
* Gets the tile's position.
* @return position
*/
const Position& Tile::getPosition() const
{
return _pos;
}
/**
* Gets the tile's footstep sound.
* @return sound ID
*/
int Tile::getFootstepSound(Tile *tileBelow) const
{
int sound = 0;
if (_objects[MapData::O_FLOOR])
sound = _objects[MapData::O_FLOOR]->getFootstepSound();
if (_objects[MapData::O_OBJECT] && _objects[MapData::O_OBJECT]->getBigWall() == 0)
sound = _objects[MapData::O_OBJECT]->getFootstepSound();
if (!_objects[MapData::O_FLOOR] && !_objects[MapData::O_OBJECT] && tileBelow != 0 && tileBelow->getTerrainLevel() == -24)
sound = tileBelow->getMapData(MapData::O_OBJECT)->getFootstepSound();
return sound;
}
/**
* Open a door on this tile.
* @param part
* @return a value: 0(normal door), 1(ufo door) or -1 if no door opened or 3 if ufo door(=animated) is still opening 4 if not enough TUs
*/
int Tile::openDoor(int part, BattleUnit *unit, bool debug)
{
if (!_objects[part]) return -1;
if (_objects[part]->isDoor())
{
if (unit && unit->getTimeUnits() < _objects[part]->getTUCost(unit->getArmor()->getMovementType()) && !debug)
return 4;
setMapData(_objects[part]->getDataset()->getObjects()->at(_objects[part]->getAltMCD()), _objects[part]->getAltMCD(), _mapDataSetID[part],
_objects[part]->getDataset()->getObjects()->at(_objects[part]->getAltMCD())->getObjectType());
setMapData(0, -1, -1, part);
return 0;
}
if (_objects[part]->isUFODoor() && _currentFrame[part] == 0) // ufo door part 0 - door is closed
{
if (unit && unit->getTimeUnits() < _objects[part]->getTUCost(unit->getArmor()->getMovementType()) && !debug)
return 4;
_currentFrame[part] = 1; // start opening door
return 1;
}
if (_objects[part]->isUFODoor() && _currentFrame[part] != 7) // ufo door != part 7 - door is still opening
{
return 3;
}
return -1;
}
/**
* Check if the ufo door is open or opening. Used for visibility/light blocking checks.
* This function assumes that there never are 2 doors on 1 tile or a door and another wall on 1 tile.
* @param part
* @return bool
*/
bool Tile::isUfoDoorOpen(int part) const
{
if (_objects[part] && _objects[part]->isUFODoor() && _currentFrame[part] != 0)
{
return true;
}
return false;
}
int Tile::closeUfoDoor()
{
int retval = 0;
for (int part = 0; part < 4; part++)
{
if (isUfoDoorOpen(part))
{
_currentFrame[part] = 0;
retval = 1;
}
}
return retval;
}
/**
* Sets the tile's cache flag. - TODO: set this for each object separately?
* @param flag true/false
* @param part 0-2 westwall/northwall/content+floor
*/
void Tile::setDiscovered(bool flag, int part)
{
if (_discovered[part] != flag)
{
_discovered[part] = flag;
if (part == 2 && flag == true)
{
_discovered[0] = true;
_discovered[1] = true;
}
// if light on tile changes, units and objects on it change light too
if (_unit != 0)
{
_unit->setCache(0);
}
}
}
/**
* Get the black fog of war state of this tile.
* @param part 0-2 westwall/northwall/content+floor
* @return bool True = discovered the tile.
*/
bool Tile::isDiscovered(int part) const
{
return _discovered[part];
}
/**
* Reset the light amount on the tile. This is done before a light level recalculation.
* @param layer Light is separated in 3 layers: Ambient, Static and Dynamic.
*/
void Tile::resetLight(int layer)
{
_light[layer] = 0;
_lastLight[layer] = _light[layer];
}
/**
* Add the light amount on the tile. Only add light if the current light is lower.
* @param light Amount of light to add.
* @param layer Light is separated in 3 layers: Ambient, Static and Dynamic.
*/
void Tile::addLight(int light, int layer)
{
if (_light[layer] < light)
_light[layer] = light;
}
/**
* Gets the tile's shade amount 0-15. It returns the brightest of all light layers.
* Shade level is the inverse of light level. So a maximum amount of light (15) returns shade level 0.
* @return shade
*/
int Tile::getShade() const
{
int light = 0;
for (int layer = 0; layer < LIGHTLAYERS; layer++)
{
if (_light[layer] > light)
light = _light[layer];
}
return 15 - light;
}
/**
* Destroy a part on this tile. We first remove the old object, then replace it with the destroyed one.
* This is because the object type of the old and new one are not necessarily the same.
* If the destroyed part is an explosive, set the tile's explosive value, which will trigger a chained explosion.
* @param part
* @return bool Return true objective was destroyed
*/
bool Tile::destroy(int part)
{
bool _objective = false;
if (_objects[part])
{
if (_objects[part]->isGravLift())
return false;
_objective = _objects[part]->getSpecialType() == MUST_DESTROY;
MapData *originalPart = _objects[part];
int originalMapDataSetID = _mapDataSetID[part];
setMapData(0, -1, -1, part);
if (originalPart->getDieMCD())
{
MapData *dead = originalPart->getDataset()->getObjects()->at(originalPart->getDieMCD());
setMapData(dead, originalPart->getDieMCD(), originalMapDataSetID, dead->getObjectType());
}
if (originalPart->getExplosive())
{
setExplosive(originalPart->getExplosive());
}
}
/* check if the floor on the lowest level is gone */
if (part == MapData::O_FLOOR && getPosition().z == 0 && _objects[MapData::O_FLOOR] == 0)
{
/* replace with scorched earth */
setMapData(MapDataSet::getScorchedEarthTile(), 1, 0, MapData::O_FLOOR);
}
return _objective;
}
/* damage terrain - check against armor
* @return bool Return true objective was destroyed
*/
bool Tile::damage(int part, int power)
{
bool objective = false;
if (power >= _objects[part]->getArmor())
objective = destroy(part);
return objective;
}
/**
* Set a "virtual" explosive on this tile. We mark a tile this way to detonate it later.
* We do it this way, because the same tile can be visited multiple times by an "explosion ray".
* The explosive power on the tile is some kind of moving MAXIMUM of the explosive rays that passes it.
* @param power
*/
void Tile::setExplosive(int power, bool force)
{
if (force || _explosive < power)
{
_explosive = power;
}
}
int Tile::getExplosive() const
{
return _explosive;
}
/**
* Apply the explosive power to the tile parts. This is where the actual destruction takes place.
* @return bool Return true objective was destroyed
*/
bool Tile::detonate()
{
int explosive = _explosive;
_explosive = 0;
bool objective = false;
if (explosive)
{
// explosions create smoke which only stays 1 or 2 turns
addSmoke(1);
for (int i = 0; i < 4; ++i)
{
if(_objects[i])
{
if ((explosive) >= _objects[i]->getArmor())
{
int decrease = _objects[i]->getArmor();
objective = destroy(i);
addSmoke(2);
if (_objects[i] && (explosive - decrease) >= _objects[i]->getArmor())
{
objective = destroy(i);
}
}
}
}
// flammable of the tile needs to be 20 or lower (lower is better chance of catching fire) to catch fire
// note that when we get here, flammable objects can already be destroyed by the explosion, thus not catching fire.
int flam = getFlammability();
if (flam <= 20)
{
if (RNG::generate(0, 20) - flam >= 0)
{
ignite();
}
}
}
return objective;
}
/*
* Flammability of a tile is the lowest flammability of it's objects.
* @return Flammability : the lower the value, the higher the chance the tile/object catches fire.
*/
int Tile::getFlammability() const
{
int flam = 255;
for (int i=0; i < 4; ++i)
{
if (_objects[i])
{
if (_objects[i]->getFlammable() < flam)
{
flam = _objects[i]->getFlammable();
}
}
}
return flam;
}
/*
* Ignite starts fire on a tile, it will burn <fuel> rounds. Fuel of a tile is the highest fuel of it's objects.
* NOT the sum of the fuel of the objects! TODO: check if this is like in the original.
*/
void Tile::ignite()
{
int fuel = 0;
for (int i=0; i < 4; ++i)
{
if (_objects[i])
{
if (_objects[i]->getFuel() > fuel)
{
fuel = _objects[i]->getFuel();
}
}
}
setFire(fuel + 1);
if (fuel > 1)
{
addSmoke(fuel * 2); // not sure
}
}
/**
* Animate the tile. This means to advance the current frame for every object.
* Ufo doors are a bit special, they animated only when triggered.
* When ufo doors are on frame 0(closed) or frame 7(open) they are not animated further.
*/
void Tile::animate()
{
int newframe;
for (int i=0; i < 4; ++i)
{
if (_objects[i])
{
if (_objects[i]->isUFODoor() && (_currentFrame[i] == 0 || _currentFrame[i] == 7)) // ufo door is static
{
continue;
}
newframe = _currentFrame[i] + 1;
if (_objects[i]->isUFODoor() && _objects[i]->getSpecialType() == START_POINT && newframe == 3)
{
newframe = 7;
}
if (newframe == 8)
{
newframe = 0;
}
_currentFrame[i] = newframe;
}
}
}
/**
* Get the sprite of a certain part of the tile.
* @param part
* @return Pointer to the sprite.
*/
Surface *Tile::getSprite(int part) const
{
if (_objects[part] == 0)
return 0;
return _objects[part]->getDataset()->getSurfaceset()->getFrame(_objects[part]->getSprite(_currentFrame[part]));
}
/**
* Set a unit on this tile.
* @param unit
*/
void Tile::setUnit(BattleUnit *unit, Tile *tileBelow)
{
if (unit != 0)
{
unit->setTile(this, tileBelow);
}
_unit = unit;
}
/**
* Get the (alive) unit on this tile.
* @return BattleUnit.
*/
BattleUnit *Tile::getUnit() const
{
return _unit;
}
/**
* Set the amount of turns this tile is on fire. 0 = no fire.
* @param fire : amount of turns this tile is on fire.
*/
void Tile::setFire(int fire)
{
_fire = fire;
_animationOffset = RNG::generate(0,3);
}
/**
* Get the amount of turns this tile is on fire. 0 = no fire.
* @return fire : amount of turns this tile is on fire.
*/
int Tile::getFire() const
{
return _fire;
}
/**
* Set the amount of turns this tile is smoking. 0 = no smoke.
* @param smoke : amount of turns this tile is smoking.
*/
void Tile::addSmoke(int smoke)
{
_smoke += smoke;
if (_smoke > 40) _smoke = 40;
_animationOffset = RNG::generate(0,3);
}
/**
* Get the amount of turns this tile is smoking. 0 = no smoke.
* @return smoke : amount of turns this tile is smoking.
*/
int Tile::getSmoke() const
{
return _smoke;
}
/**
* Get the number of frames the fire or smoke animation is off-sync.
* To void fire and smoke animations of different tiles moving nice in sync - it looks fake.
* @return offset
*/
int Tile::getAnimationOffset() const
{
return _animationOffset;
}
/**
* Add an item on the tile.
* @param item
* @param ground
*/
void Tile::addItem(BattleItem *item, RuleInventory *ground)
{
item->setSlot(ground);
_inventory.push_back(item);
item->setTile(this);
}
/**
* Remove an item from the tile.
* @param item
*/
void Tile::removeItem(BattleItem *item)
{
for (std::vector<BattleItem*>::iterator i = _inventory.begin(); i != _inventory.end(); ++i)
{
if ((*i) == item)
{
_inventory.erase(i);
break;
}
}
item->setTile(0);
}
/**
* Get the topmost item sprite to draw on the battlescape.
* @return item sprite ID in floorob, or -1 when no item
*/
int Tile::getTopItemSprite()
{
int biggestWeight = -1;
int biggestItem = -1;
for (std::vector<BattleItem*>::iterator i = _inventory.begin(); i != _inventory.end(); ++i)
{
if ((*i)->getRules()->getWeight() > biggestWeight)
{
biggestWeight = (*i)->getRules()->getWeight();
biggestItem = (*i)->getRules()->getFloorSprite();
}
}
return biggestItem;
}
/**
* New turn preparations. Decrease smoke and fire timers.
* @return bool Return true objective was destroyed
*/
bool Tile::prepareNewTurn()
{
bool objective = false;
_smoke--;
if (_smoke < 0) _smoke = 0;
if (_fire == 1)
{
// fire will be finished in this turn
// destroy all objects that burned, and try to ignite again
for (int i = 0; i < 4; ++i)
{
if(_objects[i])
{
if (_objects[i]->getFlammable() < 255)
{
objective = destroy(i);
}
}
}
if (getFlammability() < 255)
{
ignite();
}
else
{
_fire = 0;
}
}
else
{
_fire--;
if (_fire < 0) _fire = 0;
}
return objective;
}
/**
* Get the inventory on this tile.
* @return pointer to a vector of battleitems.
*/
std::vector<BattleItem *> *Tile::getInventory()
{
return &_inventory;
}
/**
* Set the marker color on this tile.
* @param color
*/
void Tile::setMarkerColor(int color)
{
_markerColor = color;
}
/**
* Get the marker color on this tile.
* @return color
*/
int Tile::getMarkerColor()
{
return _markerColor;
}
/**
* Set the marker color on this tile.
* @param color
*/
void Tile::setOverlayMarkerColor(int color)
{
_overlayMarkerColor = color;
}
/**
* Get the marker color on this tile.
* @return color
*/
int Tile::getOverlayMarkerColor()
{
return _overlayMarkerColor;
}
/**
* Set the tile visible flag.
*/
void Tile::setVisible(int visibility)
{
_visible += visibility;
}
/**
* Get the tile visible flag.
*/
int Tile::getVisible()
{
return _visible;
}
void Tile::setPreview(int dir)
{
_preview = dir;
}
int Tile::getPreview()
{
return _preview;
}
void Tile::setOverlay(int dir)
{
_overlay = dir;
}
int Tile::getOverlay()
{
return _overlay;
}
}