SCR_Stack.c

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//-----------------------------------------------------------------------------------------------------------
// Temporal wrapper for array that works as a stack
// Items are stored as 'first in, last out'
// Items inside are always ref, so bear that in mind
// Might be replaced with cpp implementation with script api later on
class SCR_Stack<Class T>
{
    protected ref array<ref T> m_aArray;
    
    //-----------------------------------------------------------------------------------------------------------
    void Push(T item) 
    {
        m_aArray.Insert(item);
    }
    
    //-----------------------------------------------------------------------------------------------------------
    T Pop()
    {
        int length = m_aArray.Count();
        if (length >= 1)
        {
            int index = length-1;
            
            ref T poppedItem = m_aArray[index];
            m_aArray.Remove(index);
            
            return poppedItem;
        }
        
        return null;
    }
    
    //-----------------------------------------------------------------------------------------------------------
    bool IsEmpty()
    {
        return (m_aArray.Count() == 0);
    }
    
    //-----------------------------------------------------------------------------------------------------------
    int Count()
    {
        return m_aArray.Count();
    }
    
    //-----------------------------------------------------------------------------------------------------------
    void SCR_Stack()
    {
        m_aArray = new array<ref T>();
    }
    
    //-----------------------------------------------------------------------------------------------------------
    void ~SCR_Stack()
    {
        if (m_aArray)
        {
            m_aArray.Clear();
            m_aArray = null;            
        }
    }
};