Method cacheUnit

src/Battlescape/Map.cpp:1382–1428

* Check if a certain unit needs to be redrawn. * @param unit Pointer to battleUnit. */

 * @param unit Pointer to battleUnit.
 */
void Map::cacheUnit(BattleUnit *unit)
{
	UnitSprite *unitSprite = new UnitSprite(_spriteWidth, _spriteHeight, 0, 0);
	unitSprite->setPalette(this->getPalette());
	bool invalid, dummy;
	int numOfParts = unit->getArmor()->getSize() == 1?1:unit->getArmor()->getSize()*2;

	unit->getCache(&invalid);
	if (invalid)
	{
		// 1 or 4 iterations, depending on unit size
		for (int i = 0; i < numOfParts; i++)
		{
			Surface *cache = unit->getCache(&dummy, i);
			if (!cache) // no cache created yet
			{
				cache = new Surface(_spriteWidth, _spriteHeight);
				cache->setPalette(this->getPalette());
			}
			unitSprite->setBattleUnit(unit, i);

			BattleItem *rhandItem = unit->getItem("STR_RIGHT_HAND");
			BattleItem *lhandItem = unit->getItem("STR_LEFT_HAND");
			if (rhandItem)
			{
				unitSprite->setBattleItem(rhandItem);
			}
			if (lhandItem)
			{
				unitSprite->setBattleItem(lhandItem);
			}

			if(!lhandItem && !rhandItem)
			{
				unitSprite->setBattleItem(0);
			}
			unitSprite->setSurfaces(_res->getSurfaceSet(unit->getArmor()->getSpriteSheet()),
									_res->getSurfaceSet("HANDOB.PCK"),
									_res->getSurfaceSet("HANDOB2.PCK"));
			unitSprite->setAnimationFrame(_animFrame);
			cache->clear();
			unitSprite->blit(cache);
			unit->setCache(cache, i);
		}
	}
	delete unitSprite;
}

/**
 * Puts a projectile sprite on the map.