void Battle::struggle() {
    // TO-DO
	//----------------
	// 14/06/2019 07:55

	int const SAPPHIRE = 1;   // index of sapphire jade
	int const EMERALD = 2;    // ... emerald jade
	int const AQUAMARINE = 3; // ... aquamarine crystal

	int const D_ARTAGMAN = 0; // index of musketeer
	int const ATHOS = 1;
	int const PORTHOS = 2;
	int const ARAMIS = 3;

	int const QUEZACOLT = 11; // index of the monster
	int const BAHAMIT = 12;
	int const CERBERUS = 21;
	int const IFRIT = 22;
	int const SIREN = 31;
	int const LEVIATHAN = 32;

	for (int i = 0; i < numOfEvents; i++) {

		int currentID = firstMusketeer; // index of the musketeer at present
		bool emptyCrystal = true;
		bool emptySapphire = true; // none has Sapphire
		Musketeer* p = &musketeers[currentID]; // first musketeer
		if (events[i] % 100 == -11 || events[i] % 100 == -12) { // Quezacolt, Bahamut:	SAPPHIRE
			int* pCrys = p->getCystalPointer(SAPPHIRE);
			if (pCrys == NULL) {
				for (int j = 0; j < NUM_OF_MUSKETEERS; j++) {
					Musketeer* a = &musketeers[(currentID + j) % NUM_OF_MUSKETEERS]; // Pointing to the next one
					if (a->getCystalPointer(SAPPHIRE) != NULL) // if this one has Sapphire
						emptyCrystal = false;
				} // if none has Crystal (empryCrystal=true), the LOOP will end
			}
			if (emptyCrystal) {
				// Lost HP
				p->setHP(p->getHP() - p->getDam(events[i], currentID));
				// p->setHP = p->getHP - p->getDam(events[i], currentID);

				if (p->getHP() > 0)
					currentID = (currentID + 1) % NUM_OF_MUSKETEERS; // update next one
				else if (p->getHP() < 1) {
					p->setHP(0);
					currentID = (currentID + 1) % NUM_OF_MUSKETEERS; // update next one
				}
			}
			if (currentID == ARAMIS) {
				if (musketeers[ARAMIS].getCystalPointer(SAPPHIRE) != NULL) { // SAPPHIRE exists
					int* temp = musketeers[ARAMIS].getCystalPointer(SAPPHIRE);
					this->manager->deallocate(temp); // lv-- (deallocate this pointer)
				}
				else { // Find the others
					for (int j = 0; j < NUM_OF_MUSKETEERS - 1; j++) { // Find the rest 3 ones
						currentID = (currentID + 1) % NUM_OF_MUSKETEERS;
						if (musketeers[currentID].getCystalPointer(SAPPHIRE) != NULL) {
							this->manager->deallocate(musketeers[currentID].getCystalPointer(SAPPHIRE));
							emptySapphire = false; // SAPPHIRE exists
						}
						else { // if SAPPHIRE doesn't exists
							for (int x = 0; x < NUM_OF_MUSKETEERS; x++) { // traverse the musketeers
								for (int y = 2; y <= NUM_OF_CYSTAL; y++) { // traverse the crystals
									int* jade = musketeers[currentID].getCystalPointer(y);
									int level = *jade;
									// Check the conditional of the Crystal
									if (level > 1 && 10 * level < musketeers[ARAMIS].getHP()) {
										musketeers[currentID].setCystalPointer(SAPPHIRE, jade);
										this->manager->deallocate(musketeers[currentID].getCystalPointer(SAPPHIRE)); // SAAPPHIRE lv--
										musketeers[ARAMIS].setHP(musketeers[ARAMIS].getHP() - 10 * (*jade)); // Update ARAMIS's HP
										musketeers[currentID].setCystalPointer(y, NULL); // delete Crystal(position: y)
									}
									else {
										int damageAramis = p->getDam(events[i], ARAMIS);
										musketeers[ARAMIS].setHP(musketeers[ARAMIS].getHP() - damageAramis);
									}
								}
								currentID = (currentID + 1) % NUM_OF_MUSKETEERS; // point to the next one
							}

						}
					}
				}
			}
			else {
				if (musketeers[currentID].getCystalPointer(SAPPHIRE) != NULL) { // check if this one has SAPPHIRE
					int* jade = musketeers[currentID].getCystalPointer(SAPPHIRE);
					this->manager->deallocate(jade); // if have, lv--
				}
				else { // Find the others
					emptySapphire = true;
					for (int j = 0; j < NUM_OF_MUSKETEERS - 1; j++) {
						currentID = (currentID + 1) % NUM_OF_MUSKETEERS;
						if (musketeers[currentID].getCystalPointer(SAPPHIRE) != NULL) {
							this->manager->deallocate(musketeers[currentID].getCystalPointer(SAPPHIRE));
							emptySapphire = false; // SAPPHIRE exists
						}
					}
					if (emptyCrystal) {
						int dam = p->getDam(events[i], currentID);
						musketeers[currentID].setHP(musketeers[currentID].getHP() - dam);
					}
				}
			}
		}

		// COLLECTING Crystal
		if (events[i] > 0) {
			int index = p->getCrystal(events[i]); // index of Crystal
			int level = p->getX(events[i]); // level of Crystal
			int* jade = musketeers[i].getCystalPointer(index);
			if (jade == NULL)
				for (int j = 0; j < level; j++)
					manager->allocate(jade); // lv++
			else if (*jade < level)
				for (int j = *jade; j < level; j++)
					manager->allocate(jade);
		}
	}
}