C++ CvPlot::getBestDefender方法代码示例

CvPlot* CvArmyAI::DetectNearbyEnemy(PlayerTypes eEnemy, bool bNaval)
{
	UnitHandle pUnit = GetFirstUnit();
	while(pUnit)
	{
		for(int iDirectionLoop = 0; iDirectionLoop < NUM_DIRECTION_TYPES; ++iDirectionLoop)
		{
			CvPlot* pAdjacentPlot = plotDirection(pUnit->getX(), pUnit->getY(), ((DirectionTypes)iDirectionLoop));
			if(pAdjacentPlot != NULL && pAdjacentPlot->isWater()==bNaval && pAdjacentPlot->getOwner() == eEnemy)
			{
				UnitHandle pOtherUnit = pAdjacentPlot->getBestDefender(eEnemy);
				if(pOtherUnit)
				{
					if(GC.getLogging() && GC.getAILogging())
					{
						CvString strMsg;
						strMsg.Format("Ran into enemy unit during attack (x=%d y=%d). Need to declare war to continue!", pAdjacentPlot->getX(), pAdjacentPlot->getY());
						GET_PLAYER(m_eOwner).getAIOperation(m_iOperationID)->LogOperationSpecialMessage(strMsg);
					}

					return pAdjacentPlot;
				}
			}
		}
		pUnit = GetNextUnit();
	}

	return NULL;
}

//.........这里部分代码省略.........
				for(int iDY = -(iRange); iDY <= iRange; iDY++)
				{
					pLoopPlot = plotXYWithRangeCheck(pCityPlot->getX(), pCityPlot->getY(), iDX, iDY, iRange);
					if(!pLoopPlot || pLoopPlot == pCityPlot)
						continue;

#if defined(MOD_EVENTS_CITY_BOMBARD)
					if (!bIndirectFireAllowed && !pCityPlot->canSeePlot(pLoopPlot, NO_TEAM, iRange, NO_DIRECTION))
						continue;
#endif
					AssignCityDangerValue(pLoopCity, pLoopPlot);
				}
			}
		}
	}

	// now compare the new known units with the previous known units
	for (UnitSet::iterator it = previousKnownUnits.begin(); it != previousKnownUnits.end(); ++it)
	{
		//might have made peace ...
		if (ShouldIgnorePlayer(it->first))
			continue;

		if (m_knownUnits.find(*it) == m_knownUnits.end())
		{
			CvUnit* pVanishedUnit = GET_PLAYER(it->first).getUnit(it->second);

			//it's still there, but moved out of sight - nevertheless count is, a human would do that as well
			//do not add it to the known units though, so next turn we will have forgotten about it
			if (pVanishedUnit)
				UpdateDangerSingleUnit(pVanishedUnit, true, false);
		}
	}

	int iPlotLoop;
	CvPlot* pPlot, *pAdjacentPlot;
	for(iPlotLoop = 0; iPlotLoop < GC.getMap().numPlots(); iPlotLoop++)
	{
		pPlot = GC.getMap().plotByIndexUnchecked(iPlotLoop);

		if(pPlot->isRevealed(thisTeam))
		{
			//remember the plot based damage, but it depends on the unit's promotions also, so we won't apply it directly
			int iPlotDamage = 0;
			if (pPlot->getFeatureType() != NO_FEATURE)
				iPlotDamage += (GC.getFeatureInfo(pPlot->getFeatureType())->getTurnDamage());
			if (pPlot->getTerrainType() != NO_FEATURE)
				iPlotDamage += (GC.getTerrainInfo(pPlot->getTerrainType())->getTurnDamage());

			m_DangerPlots[iPlotLoop].m_bFlatPlotDamage = (iPlotDamage>0);

			ImprovementTypes eImprovement = pPlot->getRevealedImprovementType(thisTeam);
			if(eImprovement != NO_IMPROVEMENT && GC.getImprovementInfo(eImprovement)->GetNearbyEnemyDamage() > 0)
			{
				if(!ShouldIgnoreCitadel(pPlot, bIgnoreVisibility))
				{
					for(int iI = 0; iI < NUM_DIRECTION_TYPES; iI++)
					{
						pAdjacentPlot = plotDirection(pPlot->getX(), pPlot->getY(), ((DirectionTypes)iI));

						if(pAdjacentPlot != NULL)
						{
							m_DangerPlots[iPlotLoop].m_pCitadel = pPlot;
						}
					}
				}
			}
		}
	}

	// testing city danger values
	CvCity* pLoopCity;
	int iLoopCity = 0;
	for(pLoopCity = thisPlayer.firstCity(&iLoopCity); pLoopCity != NULL; pLoopCity = thisPlayer.nextCity(&iLoopCity))
	{
		//adding danger would count each unit multiple times, is biased towards fast units
		//so we pretend they would all attack the city and tally up the damage
		//question is, what about our own defensive units in the area. should we count those as well?
		int iEvalRange = 4;
		int iThreatValue = 0;
		for(int iX = -iEvalRange; iX <= iEvalRange; iX++)
			for(int iY = -iEvalRange; iY <= iEvalRange; iY++)
			{
				CvPlot* pEvalPlot = plotXYWithRangeCheck(pLoopCity->getX(), pLoopCity->getY(), iX, iY, iEvalRange);
				if (pEvalPlot)
				{
					const CvUnit* pEnemy = pEvalPlot->getBestDefender(NO_PLAYER, thisPlayer.GetID(), NULL, true);
					if (pEnemy)
					{
						int iAttackerDamage = 0; //to be ignored
						iThreatValue += TacticalAIHelpers::GetSimulatedDamageFromAttackOnCity(pLoopCity,pEnemy,iAttackerDamage);
					}
				}
			}

		pLoopCity->SetThreatValue(iThreatValue);
	}

	m_bDirty = false;
}