C++ ItemBase::Fields方法代码示例

bool Equipable::CorrectAmmo(_Item * Ammo)
{
    /* If our current item is empty, cant equip ammo */
    if (!m_ItemBase)
    {
        return false;
    }

    /* If our current item does not use ammo, then we cannot equip any */
    if (!m_UsesAmmo)
    {
        return false;
    }

    /* If we are removing ammo and have ammo to remove, return true */
    if (Ammo->ItemTemplateID == -1 && m_AuxAmmoItem->GetItemTemplateID() != -1)
    {
        return true;
    }

    /* If for some reason the ammo field is null, print an error and exit */
    if (m_ItemInstance.WeaponAmmo == 0)
    {
        LogMessage("Item ID: [%d] uses ammo but has null ammo field\n", m_AuxEquipItem->GetItemTemplateID());
        return false;
    }

	ItemBase * newItemBase = g_ItemBaseMgr->GetItem(Ammo->ItemTemplateID);

    /* If we fail to find an itembase - exit */
	if (!newItemBase)
    {
		return false;
    }

    /* Check to see if this is ammo */
    if (newItemBase->SubCategory() != 103)
    {
        return false;
    }

    /* Now see if the ammo matches */
    if (!strstr(newItemBase->Fields(1)->sData, m_ItemInstance.WeaponAmmo))
    {
		m_Player->SendVaMessage("Wrong ammo type. Trying to install '%s'. Weapon takes '%s'", newItemBase->Fields(1)->sData, m_ItemInstance.WeaponAmmo);
        return false;
    }

    return true;
}

bool Player::QualityCalculator(_Item * myItem)
{
	char InstanceInfo[64];
	char IInstanceInfo[64];
	int QArraySize = 7;
	QualityArray QArray[] = {{14, 5, 0, 1.55f, 0.01f },		// Beams
							 {15,21, 1, 1.55f, 0.01f },		// ML
							 {16,21, 1, 1.55f, 0.01f },		// Projectiles
							 { 2,26, 0, 1.55f, 0.01f },		// Shields
							 { 6,31, 0, 1.35f, 0.01f },		// Engines Thrust
							 { 6,34, 1, 1.55f, 0.01f },		// Engines Warp Drain
							 { 7,20, 0, 1.55f, 0.01f }		// Reactors
							};

	ItemBase * myItemBase = g_ItemBaseMgr->GetItem(myItem->ItemTemplateID);

	memset(InstanceInfo, 0, sizeof(InstanceInfo));

	if (!myItemBase) return false; // early return if item invalid

	for(int x=0;x<QArraySize;x++)
	{
		if (QArray[x].ItemType == myItemBase->ItemType())
		{
			int FieldID = QArray[x].ItemField;
			// Get Field Type
			int FieldType = myItemBase->FieldType(FieldID);
			float FieldData = 0;

			// Read in Data
			switch(FieldType)
			{
				// Float
				case 1:
					FieldData = myItemBase->Fields(FieldID)->fData;
					break;
				// Int
				case 2:
					FieldData = (float) myItemBase->Fields(FieldID)->iData;
					break;
			}

			// Calculate Real Quality Percent
			float RealPercent;
			float ChangeRate;
			float ItemQuality = myItem->Quality;
			float NewFieldValue = 0;

			// Calculate real percent from numbers
			if (ItemQuality < 1.0f)
			{
				ChangeRate = ((1.0f - QArray[x].MinQuality)/1.0f);
				RealPercent = ItemQuality * ChangeRate + QArray[x].MinQuality;
			}
			else
			{
				ChangeRate = ((QArray[x].MaxQuality - 1.0f)/1.0f);
				RealPercent = (ItemQuality - 1.0f)* ChangeRate + 1.0f;
			}

			// Calculate the field data
			if (QArray[x].Direction == 1)
			{
				NewFieldValue = (1.0f + (1.0f - RealPercent)) * FieldData;
			}
			else
			{
				NewFieldValue = RealPercent * FieldData;
			}

			// Client does not read below 1
			if (NewFieldValue < 1.0f)
				NewFieldValue = 1.0f;

			sprintf(IInstanceInfo, "%d:%4.2f^", FieldID,NewFieldValue);
			strcat(InstanceInfo, IInstanceInfo);
		}
	}

	if (InstanceInfo[0] != 0)
	{
		memcpy(myItem->InstanceInfo, InstanceInfo, sizeof(InstanceInfo));
		return true;
	}

	return false;
}