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common.cpp
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/***************************************************************************
common.cpp - description
-------------------
begin : Fri Aug 24 2001
copyright : (C) 2001 by upi
email : upi@apocalypse.rulez.org
***************************************************************************/
#include <stdio.h>
#include <stdarg.h>
#include "common.h"
#include "State.h"
#include "Joystick.h"
#include "SDL.h"
#include "Event.h"
SDL_Surface* gamescreen = NULL;
void debug( const char* format, ... )
{
va_list ap;
va_start( ap, format );
vfprintf( stderr, format, ap );
va_end( ap );
}
bool FindPlayerKey( SDLKey a_enKey, int& a_riOutPlayer, int& a_riOutKey )
{
for (int i=0; i<MAXPLAYERS; i++)
{
for (int j=0; j<9; j++ )
{
if (g_oState.m_aiPlayerKeys[i][j] == a_enKey )
{
a_riOutPlayer = i;
a_riOutKey = j;
return true;
}
}
}
return false;
}
/**
TranslateEvent is an important function in the OpenMortal event processing
chain. It takes an SDL_Event and converts it to a game related event. This
allows for the "transparent" handling of joysticks and such.
\param a_poInEvent The SDL event which is to be translated.
\param a_poOutEvent The output event.
\returns true if the event could be translated (it was relevant for the game),
or false if it couldn't (a_poOutEvent will be set to Me_NOTHING).
*/
bool TranslateEvent( const SDL_Event* a_poInEvent, SMortalEvent* a_poOutEvent )
{
a_poOutEvent->m_enType = Me_NOTHING;
switch ( a_poInEvent->type )
{
case SDL_QUIT:
a_poOutEvent->m_enType = Me_QUIT;
g_oState.m_bQuitFlag = true;
return true;
case SDL_KEYDOWN:
{
SDLKey enKey = a_poInEvent->key.keysym.sym;
if ( enKey == SDLK_ESCAPE )
{
a_poOutEvent->m_enType = Me_MENU;
return true;
}
if ( enKey == SDLK_F1 )
{
a_poOutEvent->m_enType = Me_SKIP;
return true;
}
// Check the player keys
int iPlayer;
int iKey;
bool bFound = FindPlayerKey( enKey, iPlayer, iKey );
if ( bFound )
{
a_poOutEvent->m_enType = Me_PLAYERKEYDOWN;
a_poOutEvent->m_iPlayer = iPlayer;
a_poOutEvent->m_iKey = iKey;
return true;
}
break;
}
case SDL_KEYUP:
{
SDLKey enKey = a_poInEvent->key.keysym.sym;
int iPlayer;
int iKey;
bool bFound = FindPlayerKey( enKey, iPlayer, iKey );
if ( bFound )
{
a_poOutEvent->m_enType = Me_PLAYERKEYUP;
a_poOutEvent->m_iPlayer = iPlayer;
a_poOutEvent->m_iKey = iKey;
return true;
}
break;
}
case SDL_JOYAXISMOTION:
case SDL_JOYBALLMOTION:
case SDL_JOYHATMOTION:
case SDL_JOYBUTTONDOWN:
case SDL_JOYBUTTONUP:
{
return g_oJoystick.TranslateEvent( a_poInEvent, a_poOutEvent );
}
} // switch
return false;
}
/** MortalPollEvent works like SDL_PollEvent, except that it
returns an SMortalEvent.
*/
bool MortalPollEvent( SMortalEvent& a_roOutEvent )
{
SDL_Event oEvent;
while ( SDL_PollEvent( &oEvent ) )
{
if ( TranslateEvent( &oEvent, &a_roOutEvent ) )
{
return true;
}
}
a_roOutEvent.m_enType = Me_NOTHING;
return false;
}
/** MortalWaitEvent works like SDL_WaitEvent, except that it
returns an SMortalEvent.
*/
void MortalWaitEvent( SMortalEvent& a_roOutEvent )
{
SDL_Event oEvent;
if ( SDL_WaitEvent( &oEvent ) )
{
if ( TranslateEvent( &oEvent, &a_roOutEvent ) )
{
return;
}
}
a_roOutEvent.m_enType = Me_NOTHING;
return;
}

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