/*+
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    SDL - Simple DirectMedia Layer+
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    Copyright (C) 1997-2004 Sam Lantinga+
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+
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    This library is free software; you can redistribute it and/or+
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    modify it under the terms of the GNU Library General Public+
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    License as published by the Free Software Foundation; either+
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    version 2 of the License, or (at your option) any later version.+
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+
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    This library is distributed in the hope that it will be useful,+
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    but WITHOUT ANY WARRANTY; without even the implied warranty of+
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    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU+
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    Library General Public License for more details.+
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+
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    You should have received a copy of the GNU Library General Public+
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    License along with this library; if not, write to the Free+
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    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA+
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+
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    Sam Lantinga+
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    slouken@libsdl.org+
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*/+
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+
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+
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#ifdef SAVE_RCSID+
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static char rcsid =+
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 "@(#) $Id$";+
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#endif+
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+
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/* This is the system specific header for the SDL joystick API */+
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+
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#include <stdio.h>		/* For the definition of NULL */+
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+
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#include <libraries/lowlevel.h>+
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#if defined(__SASC) || defined(STORMC4_WOS)+
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#include <proto/exec.h>+
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#include <proto/lowlevel.h>+
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#include <proto/graphics.h>+
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#else+
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#include <inline/exec.h>+
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#include <inline/lowlevel.h>+
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#include <inline/graphics.h>+
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#endif+
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#include "mydebug.h"+
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+
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extern struct ExecBase *SysBase;+
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extern struct GfxBase *GfxBase;+
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#include <stdlib.h>+
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+
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#include "SDL_error.h"+
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#include "SDL_joystick.h"+
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#include "SDL_sysjoystick.h"+
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#include "SDL_joystick_c.h"+
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+
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/* Function to scan the system for joysticks.+
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 * This function should set SDL_numjoysticks to the number of available+
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 * joysticks.  Joystick 0 should be the system default joystick.+
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 * It should return 0, or -1 on an unrecoverable fatal error.+
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 */+
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+
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+
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/* Amiga specific datas */+
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struct Library *LowLevelBase=NULL;+
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+
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ULONG joybut[]=+
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{+
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	JPF_BUTTON_RED,+
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	JPF_BUTTON_BLUE,+
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	JPF_BUTTON_PLAY,+
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	JPF_BUTTON_YELLOW,+
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	JPF_BUTTON_GREEN,+
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	JPF_BUTTON_FORWARD,+
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	JPF_BUTTON_REVERSE,+
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};+
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+
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struct joystick_hwdata+
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{+
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	ULONG joystate;+
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};+
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+
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int SDL_SYS_JoystickInit(void)+
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{+
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	if(!LowLevelBase)+
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	{+
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		if(LowLevelBase=OpenLibrary("lowlevel.library",37))+
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			return 2;+
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	}+
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	else+
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		return 2;+
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+
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	D(bug("%ld joysticks available.\n",SDL_numjoysticks));+
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+
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	return 0;+
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}+
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+
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/* Function to get the device-dependent name of a joystick */+
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const char *SDL_SYS_JoystickName(int index)+
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{+
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	if(index<2&&LowLevelBase)+
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	{+
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		switch(index)+
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		{+
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			case 0:+
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				return "Port 1 Amiga Joystick/Joypad";+
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			case 1:+
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				return "Port 2 Amiga Joystick/Joypad";+
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		}+
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	}+
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+
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	SDL_SetError("No joystick available with that index");+
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	return(NULL);+
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}+
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+
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/* Function to open a joystick for use.+
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   The joystick to open is specified by the index field of the joystick.+
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   This should fill the nbuttons and naxes fields of the joystick structure.+
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   It returns 0, or -1 if there is an error.+
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 */+
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+
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int SDL_SYS_JoystickOpen(SDL_Joystick *joystick)+
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{+
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	ULONG temp,i;+
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	D(bug("Opening joystick %ld\n",joystick->index));+
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+
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	if(!(joystick->hwdata=malloc(sizeof(struct joystick_hwdata))))+
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		return -1;+
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+
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/* This loop is to check if the controller is a joypad */+
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+
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	for(i=0;i<20;i++)+
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	{+
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		temp=ReadJoyPort(joystick->index^1); // fix to invert amiga joyports+
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		WaitTOF();+
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	}+
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+
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	if((temp&JP_TYPE_MASK)==JP_TYPE_GAMECTLR)+
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		joystick->nbuttons=7;+
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	else+
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		joystick->nbuttons=3;+
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+
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	joystick->nhats=0;+
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	joystick->nballs=0;+
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	joystick->naxes=2;+
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	joystick->hwdata->joystate=0L;+
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+
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	return 0;+
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}+
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+
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/* Function to update the state of a joystick - called as a device poll.+
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 * This function shouldn't update the joystick structure directly,+
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 * but instead should call SDL_PrivateJoystick*() to deliver events+
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 * and update joystick device state.+
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 */+
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void SDL_SYS_JoystickUpdate(SDL_Joystick *joystick)+
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{+
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	ULONG data;+
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	int i;+
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+
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	if(joystick->index<2)+
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	{+
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		data=ReadJoyPort(joystick->index);+
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+
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		if(data&JP_DIRECTION_MASK)+
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		{+
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			if(data&JPF_JOY_DOWN)+
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			{+
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				if(!(joystick->hwdata->joystate&JPF_JOY_DOWN))+
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					SDL_PrivateJoystickAxis(joystick,0,127);+
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			}+
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			else if(data&JPF_JOY_UP)+
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			{+
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				if(!(joystick->hwdata->joystate&JPF_JOY_UP))+
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					SDL_PrivateJoystickAxis(joystick,0,-127);+
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			}+
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			else if(joystick->hwdata->joystate&(JPF_JOY_UP|JPF_JOY_DOWN))+
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				SDL_PrivateJoystickAxis(joystick,0,0);+
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+
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			if(data&JPF_JOY_LEFT)+
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			{+
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				if(!(joystick->hwdata->joystate&JPF_JOY_LEFT))+
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					SDL_PrivateJoystickAxis(joystick,1,-127);+
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			}+
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			else if(data&JPF_JOY_RIGHT)+
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			{+
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				if(!(joystick->hwdata->joystate&JPF_JOY_RIGHT))+
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					SDL_PrivateJoystickAxis(joystick,1,127);+
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			}+
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			else if(joystick->hwdata->joystate&(JPF_JOY_LEFT|JPF_JOY_RIGHT))+
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				SDL_PrivateJoystickAxis(joystick,1,0);+
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		}+
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		else if(joystick->hwdata->joystate&(JPF_JOY_LEFT|JPF_JOY_RIGHT))+
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		{+
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				SDL_PrivateJoystickAxis(joystick,1,0);+
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		}+
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		else if(joystick->hwdata->joystate&(JPF_JOY_UP|JPF_JOY_DOWN))+
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		{+
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				SDL_PrivateJoystickAxis(joystick,0,0);+
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		}+
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+
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		for(i=0;i<joystick->nbuttons;i++)+
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		{+
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			if( (data&joybut[i]) )+
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			{+
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				if(i==1)+
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					data&=(~(joybut[2]));+
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+
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				if(!(joystick->hwdata->joystate&joybut[i]))+
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					SDL_PrivateJoystickButton(joystick,i,SDL_PRESSED);+
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			}+
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			else if(joystick->hwdata->joystate&joybut[i])+
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				SDL_PrivateJoystickButton(joystick,i,SDL_RELEASED);+
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		}+
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+
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		joystick->hwdata->joystate=data;+
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	}+
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+
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	return;+
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}+
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+
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/* Function to close a joystick after use */+
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void SDL_SYS_JoystickClose(SDL_Joystick *joystick)+
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{+
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	if(joystick->hwdata)+
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		free(joystick->hwdata);+
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	return;+
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}+
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+
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/* Function to perform any system-specific joystick related cleanup */+
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+
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void SDL_SYS_JoystickQuit(void)+
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{+
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	if(LowLevelBase)+
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	{+
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		CloseLibrary(LowLevelBase);+
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		LowLevelBase=NULL;+
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		SDL_numjoysticks=0;+
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	}+
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+
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	return;+
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}+
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+
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