isle/LEGO1/mxatomidcounter.h

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#ifndef MXATOMIDCOUNTER_H
#define MXATOMIDCOUNTER_H
#include "mxstring.h"
#include "compat.h" // STL
// Counts the number of existing MxAtomId objects based
// on the matching char* string. A <map> seems fit for purpose here:
// We have an MxString as a key and MxU16 as the value.
// And yet a <set> is the best match. The malloc in MxOmni::Create
// for the _Nil node asks for more bytes than a regular node if a <map>
// is used, but all nodes are 20 bytes wide with a <set>.
// Also: the increment/decrement methods suggest a custom type was used
// for the combined key_value_pair, which doesn't seem possible with <map>.
// SIZE: 0x14 (including padding)
class MxAtomIdCounter
{
public:
// always inlined
MxAtomIdCounter(const char *p_str)
{
m_key = p_str;
m_value = 0;
}
void Inc();
void Dec();
inline MxString* GetKey() { return &m_key; };
inline MxU16 GetValue() { return m_value; };
private:
MxString m_key;
MxU16 m_value;
};
struct MxAtomIdCounterCompare
{
// OFFSET: LEGO1 0x100ad120
int operator()(MxAtomIdCounter* const & p_val0, MxAtomIdCounter* const & p_val1) const
{
return strcmp(p_val0->GetKey()->GetData(), p_val1->GetKey()->GetData()) > 0;
}
};
class MxAtomIdCounterSet : public set<MxAtomIdCounter*, MxAtomIdCounterCompare>
{};
#endif //MXATOMIDCOUNTER_H