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forked from 0ad/0ad
0ad/source/tools/atlas/GameInterface/CommandProc.cpp
Ykkrosh bbda296289 TerrainProperties: Use CTerrainPropertiesPtr (boost::shared_ptr) instead of CTerrainProperties*, to fix (slightly inelegantly) memory leaks.
Renderer: Initialise pointers when HW lighting is unavailable.
Atlas: Avoid strange VS2005 iterator complaint.

This was SVN commit r3036.
2005-10-28 01:43:16 +00:00

117 lines
2.4 KiB
C++

#include "precompiled.h"
#include "CommandProc.h"
//////////////////////////////////////////////////////////////////////////
template<typename T> T next(T x) { T t = x; return ++t; }
template<typename T, typename I> void delete_erase(T list, I first, I last)
{
while (first != last)
{
delete *first;
first = list.erase(first);
}
}
template<typename T> void delete_fn(T* v) { delete v; }
//////////////////////////////////////////////////////////////////////////
using namespace AtlasMessage;
namespace AtlasMessage {
static CommandProc g_CommandProc;
CommandProc& GetCommandProc() { return g_CommandProc; }
cmdHandlers& GetCmdHandlers()
{
static cmdHandlers h;
return h;
}
}
CommandProc::CommandProc()
{
// Start the list with a NULL, so m_CurrentCommand can point at
// something even when the command stack is empty
m_Commands.push_back(NULL);
m_CurrentCommand = m_Commands.begin();
}
CommandProc::~CommandProc()
{
for_each(m_Commands.begin(), m_Commands.end(), delete_fn<Command>);
m_Commands.clear();
}
void CommandProc::Submit(Command* cmd)
{
delete_erase(m_Commands, next(m_CurrentCommand), m_Commands.end());
m_CurrentCommand = m_Commands.insert(next(m_CurrentCommand), cmd);
(*m_CurrentCommand)->Do();
}
void CommandProc::Undo()
{
if (m_CurrentCommand != m_Commands.begin())
{
(*m_CurrentCommand)->Undo();
--m_CurrentCommand;
}
}
void CommandProc::Redo()
{
if (next(m_CurrentCommand) != m_Commands.end())
{
++m_CurrentCommand;
(*m_CurrentCommand)->Redo();
}
}
void CommandProc::Merge()
{
if (m_CurrentCommand == m_Commands.begin())
{
debug_warn("Merge illogic: no commands");
return;
}
if (next(m_CurrentCommand) != m_Commands.end())
{
debug_warn("Merge illogic: not at stack top");
return;
}
cmdIt prev = m_CurrentCommand;
--prev;
if (prev == m_Commands.begin())
{
debug_warn("Merge illogic: only 1 command");
return;
}
if ((*prev)->GetType() != (*m_CurrentCommand)->GetType())
{
const char* a = (*prev)->GetType();
const char* b = (*m_CurrentCommand)->GetType();
debug_printf("[incompatible: %s -> %s]\n", a, b);
debug_warn("Merge illogic: incompatible command");
return;
}
(*m_CurrentCommand)->Merge(*prev);
delete *m_CurrentCommand;
m_Commands.erase(m_CurrentCommand);
m_CurrentCommand = prev;
}