/*
* MegaMek - Copyright (C) 2001,2002,2003,2004 Ben Mazur (bmazur@sev.org)
*
* This program 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 2 of the License, or (at your option)
* any later version.
*
* This program 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.
*/
package megamek.common.actions;
import megamek.common.BattleArmor;
import megamek.common.Building;
import megamek.common.Compute;
import megamek.common.CriticalSlot;
import megamek.common.Entity;
import megamek.common.EntityWeightClass;
import megamek.common.IGame;
import megamek.common.IHex;
import megamek.common.Mech;
import megamek.common.Player;
import megamek.common.TargetRoll;
import megamek.common.Targetable;
import megamek.common.Terrains;
import megamek.common.ToHitData;
public class PhysicalAttackAction extends AbstractAttackAction {
/**
*
*/
private static final long serialVersionUID = -4702357516725749181L;
public PhysicalAttackAction(int entityId, int targetId) {
super(entityId, targetId);
}
public PhysicalAttackAction(int entityId, int targetType, int targetId) {
super(entityId, targetType, targetId);
}
/**
* Common checking whether is it possible to physically attack the target
*
* @param game
* @param attackerId
* @param target
* @return reason the attack is impossible, or null if it is possible
*/
protected static String toHitIsImpossible(IGame game, Entity ae,
Targetable target) {
if (target == null) {
return "target is null";
}
if (!game.getOptions().booleanOption("friendly_fire")) {
// a friendly unit can never be the target of a direct attack.
if ((target.getTargetType() == Targetable.TYPE_ENTITY)
&& ((((Entity)target).getOwnerId() == ae.getOwnerId())
|| ((((Entity)target).getOwner().getTeam() != Player.TEAM_NONE)
&& (ae.getOwner().getTeam() != Player.TEAM_NONE)
&& (ae.getOwner().getTeam() == ((Entity)target).getOwner().getTeam())))) {
return "A friendly unit can never be the target of a direct attack.";
}
}
// check range
if (ae.getPosition().distance(target.getPosition()) > 1) {
return "Target not in range";
}
//can't make a physical attack if you are evading
if(ae.isEvading()) {
return "Attacker is evading.";
}
if (target.getTargetType() == Targetable.TYPE_ENTITY) {
// Checks specific to entity targets
Entity te = (Entity) target;
// Can't target a transported entity.
if (Entity.NONE != te.getTransportId()) {
return "Target is a passenger.";
}
// can't target yourself
if (ae.equals(te)) {
return "You can't target yourself";
}
// Can't target a entity conducting a swarm attack.
if (Entity.NONE != te.getSwarmTargetId()) {
return "Target is swarming a Mek.";
}
if ( (ae.getGrappled() != Entity.NONE) &&
(ae.getGrappleSide() == Entity.GRAPPLE_BOTH) ) {
return "Locked in Grapple";
}
// target unit in building checks
final boolean targetInBuilding = Compute.isInBuilding(game, te);
if (targetInBuilding) {
Building TargBldg = game.getBoard().getBuildingAt(
te.getPosition());
// Can't target units in buildings (from the outside).
if (!Compute.isInBuilding(game, ae)) {
return "Target is inside building";
} else if (!game.getBoard().getBuildingAt(ae.getPosition())
.equals(TargBldg)) {
return "Target is inside different building";
}
}
// can't physically attack mechs making dfa attacks
if (te.isMakingDfa()) {
return "Target is making a DFA attack";
}
}
// Can't target woods or ignite a building with a physical.
if ((target.getTargetType() == Targetable.TYPE_BLDG_IGNITE)
|| (target.getTargetType() == Targetable.TYPE_HEX_CLEAR)
|| (target.getTargetType() == Targetable.TYPE_HEX_IGNITE)) {
return "Invalid attack";
}
return null;
}
protected static void setCommonModifiers(ToHitData toHit, IGame game,
Entity ae, Targetable target) {
boolean inSameBuilding = Compute.isInSameBuilding(game, ae, target);
int attackerId = ae.getId();
int targetId = target.getTargetId();
// Battle Armor targets are hard for Meks and Tanks to hit.
if (target instanceof BattleArmor) {
toHit.addModifier(1, "battle armor target");
}
// attacker movement
toHit.append(Compute.getAttackerMovementModifier(game, attackerId));
// attacker terrain
toHit.append(Compute.getAttackerTerrainModifier(game, attackerId));
// target terrain
toHit.append(Compute.getTargetTerrainModifier(game, target, 0, inSameBuilding));
if ( ae.hasModularArmor() ) {
toHit.addModifier(1,"Modular Armor");
}
// If it has a torso-mounted cockpit and two head sensor hits or three
// sensor hits...
// It gets a =4 penalty for being blind!
if (((Mech) ae).getCockpitType() == Mech.COCKPIT_TORSO_MOUNTED) {
int sensorHits = ae.getBadCriticals(CriticalSlot.TYPE_SYSTEM,
Mech.SYSTEM_SENSORS, Mech.LOC_HEAD);
int sensorHits2 = ae.getBadCriticals(CriticalSlot.TYPE_SYSTEM,
Mech.SYSTEM_SENSORS, Mech.LOC_CT);
if ((sensorHits + sensorHits2) == 3) {
toHit = new ToHitData(TargetRoll.IMPOSSIBLE,
"Sensors Completely Destroyed for Torso-Mounted Cockpit");
return;
} else if (sensorHits == 2) {
toHit.addModifier(4,
"Head Sensors Destroyed for Torso-Mounted Cockpit");
}
}
// if we're spotting for indirect fire, add +1
if (ae.isSpotting()) {
toHit.addModifier(+1, "attacker is spotting for indirect LRM fire");
}
// target immobile
toHit.append(Compute.getImmobileMod(target));
toHit.append(nightModifiers(game, target, null, ae, false));
if (target.getTargetType() == Targetable.TYPE_ENTITY) {
// Checks specific to entity targets
Entity te = (Entity) target;
// target movement
toHit.append(Compute.getTargetMovementModifier(game, targetId));
// target prone
if (te.isProne()) {
toHit.addModifier(-2, "target prone and adjacent");
}
IHex targHex = game.getBoard().getHex(te.getPosition());
// water partial cover?
if ((te.height() > 0) && (te.getElevation() == -1)
&& (targHex.terrainLevel(Terrains.WATER) == te.height())) {
toHit.addModifier(1, "target has partial cover");
}
// Pilot skills
Compute.modifyPhysicalBTHForAdvantages(ae, te, toHit, game);
//Attacking Weight Class Modifier.
if ( game.getOptions().booleanOption("tacops_attack_physical_psr") ) {
if ( ae.getWeightClass() == EntityWeightClass.WEIGHT_LIGHT ) {
toHit.addModifier(-2, "Weight Class Attack Modifier");
}else if ( ae.getWeightClass() == EntityWeightClass.WEIGHT_MEDIUM ) {
toHit.addModifier(-1, "Weight Class Attack Modifier");
}
}
//evading bonuses (
if(te.isEvading()) {
toHit.addModifier(te.getEvasionBonus(), "target is evading");
}
}
if ((ae instanceof Mech) && ((Mech)ae).hasIndustrialTSM()) {
toHit.addModifier(2, "industrial TSM");
}
}
}