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package mekanism.api.gas;
import net.minecraft.nbt.NBTTagCompound;
/**
* GasStack - a specified amount of a defined Gas with certain properties.
* @author aidancbrady
*
*/
public class GasStack
{
private Gas type;
public int amount;
/**
* Creates a new GasStack with a defined gas ID and quantity.
* @param id - gas ID to associate this GasStack to, will perform a GasRegistry lookup in the constructor
* @param quantity - amount of gas to be referenced in this GasStack
*/
public GasStack(int id, int quantity)
{
type = GasRegistry.getGas(id);
amount = quantity;
}
/**
* Creates a new GasStack with a defined Gas type and quantity.
* @param gas - gas type of the stack
* @param quantity - amount of gas to be referenced in this GasStack
*/
public GasStack(Gas gas, int quantity)
{
type = gas;
amount = quantity;
}
private GasStack() {}
/**
* Gets the Gas type of this GasStack.
* @return this GasStack's Gas type
*/
public Gas getGas()
{
return type;
}
public GasStack withAmount(int newAmount)
{
amount = newAmount;
return this;
}
/**
* Writes this GasStack to a defined tag compound.
* @param nbtTags - tag compound to write to
* @return tag compound with this GasStack's data
*/
public NBTTagCompound write(NBTTagCompound nbtTags)
{
type.write(nbtTags);
nbtTags.setInteger("amount", amount);
return nbtTags;
}
/**
* Reads this GasStack's data from a defined tag compound.
* @param nbtTags - tag compound to read from
*/
public void read(NBTTagCompound nbtTags)
{
type = Gas.readFromNBT(nbtTags);
amount = nbtTags.getInteger("amount");
}
/**
* Returns the GasStack stored in the defined tag compound, or null if it doesn't exist.
* @param nbtTags - tag compound to read from
* @return GasStack stored in the tag compound
*/
public static GasStack readFromNBT(NBTTagCompound nbtTags)
{
if(nbtTags == null || nbtTags.hasNoTags())
{
return null;
}
GasStack stack = new GasStack();
stack.read(nbtTags);
if(stack.getGas() == null || stack.amount <= 0)
{
return null;
}
return stack;
}
/**
* Returns a copied form of this GasStack.
* @return copied GasStack
*/
public GasStack copy()
{
return new GasStack(type, amount);
}
/**
* Whether or not this GasStack's gas type is equal to the other defined GasStack.
* @param stack - GasStack to check
* @return if the GasStacks contain the same gas type
*/
public boolean isGasEqual(GasStack stack)
{
return stack != null && getGas() == stack.getGas();
}
@Override
public String toString()
{
return "[" + type + ", " + amount + "]";
}
@Override
public int hashCode()
{
return type == null ? 0 : type.getID();
}
}
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