/*
* MegaMek - Copyright (C) 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.Building;
import megamek.common.Compute;
import megamek.common.Entity;
import megamek.common.GunEmplacement;
import megamek.common.IGame;
import megamek.common.IHex;
import megamek.common.ILocationExposureStatus;
import megamek.common.Player;
import megamek.common.Protomech;
import megamek.common.TargetRoll;
import megamek.common.Targetable;
import megamek.common.Terrains;
import megamek.common.ToHitData;
/**
* The attacking Protomech makes it's combo physical attack action.
*/
public class ProtomechPhysicalAttackAction extends AbstractAttackAction {
/**
*
*/
private static final long serialVersionUID = 1432011536091665084L;
public ProtomechPhysicalAttackAction(int entityId, int targetId) {
super(entityId, targetId);
}
public ProtomechPhysicalAttackAction(int entityId, int targetType,
int targetId) {
super(entityId, targetType, targetId);
}
/**
* Damage a Protomech does with its Combo-physicalattack.
*/
public static int getDamageFor(Entity entity) {
int toReturn;
if ((entity.getWeight() >= 2) && (entity.getWeight() < 6)) {
toReturn = 1;
} else {
toReturn = 2;
}
// underwater damage is half, round up (see bug 1110692)
if (entity.getLocationStatus(Protomech.LOC_TORSO) == ILocationExposureStatus.WET) {
toReturn = (int) Math.ceil(toReturn * 0.5f);
}
return toReturn;
}
public ToHitData toHit(IGame game) {
return toHit(game, getEntityId(), game.getTarget(getTargetType(),
getTargetId()));
}
public static ToHitData toHit(IGame game, int attackerId, Targetable target) {
final Entity ae = game.getEntity(attackerId);
int targetId = Entity.NONE;
Entity te = null;
// arguments legal?
if ((ae == null) || (target == null)) {
throw new IllegalArgumentException("Attacker or target not valid");
}
if (target.getTargetType() == Targetable.TYPE_ENTITY) {
te = (Entity) target;
targetId = target.getTargetId();
}
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 new ToHitData(TargetRoll.IMPOSSIBLE, "A friendly unit can never be the target of a direct attack.");
}
}
final IHex attHex = game.getBoard().getHex(ae.getPosition());
final IHex targHex = game.getBoard().getHex(target.getPosition());
if ((attHex == null) || (targHex == null)) {
return new ToHitData(TargetRoll.IMPOSSIBLE, "off board");
}
final int attackerElevation = ae.getElevation() + attHex.getElevation();
final int targetHeight = target.absHeight() + targHex.getElevation();
final int targetElevation = target.getElevation()
+ targHex.getElevation();
final boolean targetInBuilding = Compute.isInBuilding(game, te);
boolean inSameBuilding = Compute.isInSameBuilding(game, ae, te);
Building bldg = null;
if (targetInBuilding) {
bldg = game.getBoard().getBuildingAt(te.getPosition());
}
ToHitData toHit;
// can't target yourself
if (ae.equals(te)) {
return new ToHitData(TargetRoll.IMPOSSIBLE,
"You can't target yourself");
}
// non-protos can't make protomech-physicalattacks
if (!(ae instanceof Protomech)) {
return new ToHitData(TargetRoll.IMPOSSIBLE,
"Non-protos can't make proto-physicalattacks");
}
// Can't target a transported entity.
if ((te != null) && (Entity.NONE != te.getTransportId())) {
return new ToHitData(TargetRoll.IMPOSSIBLE,
"Target is a passenger.");
}
// Can't target a entity conducting a swarm attack.
if ((te != null) && (Entity.NONE != te.getSwarmTargetId())) {
return new ToHitData(TargetRoll.IMPOSSIBLE,
"Target is swarming a Mek.");
}
// check range
final int range = ae.getPosition().distance(target.getPosition());
if (range > 1) {
return new ToHitData(TargetRoll.IMPOSSIBLE, "Target not in range");
}
// check elevation
if ((attackerElevation < targetElevation)
|| (attackerElevation > targetHeight)) {
return new ToHitData(TargetRoll.IMPOSSIBLE,
"Target elevation not in range");
}
// can't physically attack mechs making dfa attacks
if ((te != null) && te.isMakingDfa()) {
return new ToHitData(TargetRoll.IMPOSSIBLE,
"Target is making a DFA attack");
}
// can only target targets in adjacent hexes, not in same hex
if (range == 0) {
return new ToHitData(TargetRoll.IMPOSSIBLE,
"Target not in adjacent hex");
}
// check facing
// Don't check arc for stomping infantry or tanks.
if ((0 != range)
&& !Compute.isInArc(ae.getPosition(), ae.getFacing(), target
.getPosition(), Compute.ARC_FORWARD)) {
return new ToHitData(TargetRoll.IMPOSSIBLE, "Target not in arc");
}
// Can't target units in buildings (from the outside).
if ((0 != range) && targetInBuilding) {
if (!Compute.isInBuilding(game, ae)) {
return new ToHitData(TargetRoll.IMPOSSIBLE,
"Target is inside building");
} else if (!game.getBoard().getBuildingAt(ae.getPosition()).equals(
bldg)) {
return new ToHitData(TargetRoll.IMPOSSIBLE,
"Target is inside differnt building");
}
}
// Attacks against adjacent buildings automatically hit.
if ((target.getTargetType() == Targetable.TYPE_BUILDING)
|| (target.getTargetType() == Targetable.TYPE_FUEL_TANK)
|| (target instanceof GunEmplacement)) {
return new ToHitData(TargetRoll.AUTOMATIC_SUCCESS,
"Targeting adjacent building.");
}
// 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 new ToHitData(TargetRoll.IMPOSSIBLE, "Invalid attack");
}
// Set the base BTH
int base = 4;
// Start the To-Hit
toHit = new ToHitData(base, "base");
// attacker movement
toHit.append(Compute.getAttackerMovementModifier(game, attackerId));
// target movement
toHit.append(Compute.getTargetMovementModifier(game, targetId));
// attacker terrain
toHit.append(Compute.getAttackerTerrainModifier(game, attackerId));
// target terrain
toHit.append(Compute.getTargetTerrainModifier(game, te, 0, inSameBuilding));
// attacker is spotting
if (ae.isSpotting()) {
toHit.addModifier(+1, "attacker is spotting");
}
// target prone
if (te.isProne()) {
toHit.addModifier(-2, "target prone and adjacent");
}
// water partial cover?
if ((te.height() > 0) && (te.getElevation() == -1)
&& (targHex.terrainLevel(Terrains.WATER) == te.height())) {
toHit.addModifier(3, "target has partial cover");
}
// target immobile
toHit.append(Compute.getImmobileMod(te));
toHit.append(nightModifiers(game, target, null, ae, false));
Compute.modifyPhysicalBTHForAdvantages(ae, te, toHit, game);
// elevation
if (attackerElevation < targetHeight) {
toHit.setHitTable(ToHitData.HIT_KICK);
} else if (te.height() > 0) {
toHit.setHitTable(ToHitData.HIT_PUNCH);
} else {
toHit.setHitTable(ToHitData.HIT_NORMAL);
}
// factor in target side
toHit.setSideTable(Compute.targetSideTable(ae, te));
// done!
return toHit;
}
}