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annotate src/joystick/amigaos/SDL_sysjoystick.c @ 716:f25e3334d583

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SDL_JoystickInit: If malloc() fails, pretend no joysticks were detected.
author Ryan C. Gordon <icculus@icculus.org>
date Sat, 13 Sep 2003 02:20:32 +0000
parents f6ffac90895c
children b8d311d90021
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
297
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3 Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Library General Public
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7 License as published by the Free Software Foundation; either
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8 version 2 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Library General Public License for more details.
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14
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15 You should have received a copy of the GNU Library General Public
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16 License along with this library; if not, write to the Free
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17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22
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23
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24 #ifdef SAVE_RCSID
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25 static char rcsid =
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26 "@(#) $Id$";
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27 #endif
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28
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29 /* This is the system specific header for the SDL joystick API */
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30
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31 #include <stdio.h> /* For the definition of NULL */
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32
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33 #include <libraries/lowlevel.h>
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34 #if defined(__SASC) || defined(STORMC4_WOS)
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35 #include <proto/exec.h>
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36 #include <proto/lowlevel.h>
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37 #include <proto/graphics.h>
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38 #else
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39 #include <inline/exec.h>
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40 #include <inline/lowlevel.h>
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41 #include <inline/graphics.h>
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42 #endif
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43 #include "mydebug.h"
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44
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45 extern struct ExecBase *SysBase;
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46 extern struct GfxBase *GfxBase;
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47 #include <stdlib.h>
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48
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49 #include "SDL_error.h"
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50 #include "SDL_joystick.h"
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51 #include "SDL_sysjoystick.h"
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52 #include "SDL_joystick_c.h"
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53
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54 /* Function to scan the system for joysticks.
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55 * This function should set SDL_numjoysticks to the number of available
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56 * joysticks. Joystick 0 should be the system default joystick.
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57 * It should return 0, or -1 on an unrecoverable fatal error.
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58 */
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59
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60
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61 /* Amiga specific datas */
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62 struct Library *LowLevelBase=NULL;
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63
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64 ULONG joybut[]=
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65 {
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66 JPF_BUTTON_RED,
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67 JPF_BUTTON_BLUE,
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68 JPF_BUTTON_PLAY,
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69 JPF_BUTTON_YELLOW,
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70 JPF_BUTTON_GREEN,
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71 JPF_BUTTON_FORWARD,
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72 JPF_BUTTON_REVERSE,
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73 };
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74
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75 struct joystick_hwdata
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76 {
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77 ULONG joystate;
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78 };
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79
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80 int SDL_SYS_JoystickInit(void)
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81 {
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82 if(!LowLevelBase)
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83 {
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84 if(LowLevelBase=OpenLibrary("lowlevel.library",37))
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85 return 2;
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86 }
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87 else
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88 return 2;
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89
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90 D(bug("%ld joysticks available.\n",SDL_numjoysticks));
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91
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92 return 0;
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93 }
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94
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95 /* Function to get the device-dependent name of a joystick */
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96 const char *SDL_SYS_JoystickName(int index)
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97 {
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98 if(index<2&&LowLevelBase)
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99 {
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100 switch(index)
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101 {
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102 case 0:
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103 return "Port 1 Amiga Joystick/Joypad";
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104 case 1:
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105 return "Port 2 Amiga Joystick/Joypad";
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106 }
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107 }
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108
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109 SDL_SetError("No joystick available with that index");
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110 return(NULL);
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111 }
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112
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113 /* Function to open a joystick for use.
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114 The joystick to open is specified by the index field of the joystick.
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115 This should fill the nbuttons and naxes fields of the joystick structure.
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116 It returns 0, or -1 if there is an error.
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117 */
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118
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119 int SDL_SYS_JoystickOpen(SDL_Joystick *joystick)
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120 {
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121 ULONG temp,i;
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122 D(bug("Opening joystick %ld\n",joystick->index));
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123
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124 if(!(joystick->hwdata=malloc(sizeof(struct joystick_hwdata))))
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125 return -1;
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126
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127 /* This loop is to check if the controller is a joypad */
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128
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129 for(i=0;i<20;i++)
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130 {
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131 temp=ReadJoyPort(joystick->index^1); // fix to invert amiga joyports
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132 WaitTOF();
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
133 }
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
134
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
135 if((temp&JP_TYPE_MASK)==JP_TYPE_GAMECTLR)
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
136 joystick->nbuttons=7;
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
137 else
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
138 joystick->nbuttons=3;
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
139
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
140 joystick->nhats=0;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
141 joystick->nballs=0;
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
142 joystick->naxes=2;
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
143 joystick->hwdata->joystate=0L;
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144
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
145 return 0;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
146 }
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
147
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
148 /* Function to update the state of a joystick - called as a device poll.
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
149 * This function shouldn't update the joystick structure directly,
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
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150 * but instead should call SDL_PrivateJoystick*() to deliver events
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
151 * and update joystick device state.
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
152 */
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
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diff changeset
153 void SDL_SYS_JoystickUpdate(SDL_Joystick *joystick)
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
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154 {
255
dcb5e869f8b5 Updated Amiga port by Gabriele Greco
Sam Lantinga <slouken@libsdl.org>
parents: 252
diff changeset
155 ULONG data;
21
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
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diff changeset
156 int i;
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157
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Sam Lantinga <slouken@lokigames.com>
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158 if(joystick->index<2)
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
159 {
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
160 data=ReadJoyPort(joystick->index);
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Sam Lantinga <slouken@lokigames.com>
parents:
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161
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
162 if(data&JP_DIRECTION_MASK)
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Sam Lantinga <slouken@lokigames.com>
parents:
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163 {
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
164 if(data&JPF_JOY_DOWN)
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Sam Lantinga <slouken@lokigames.com>
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165 {
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
166 if(!(joystick->hwdata->joystate&JPF_JOY_DOWN))
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parents:
diff changeset
167 SDL_PrivateJoystickAxis(joystick,0,127);
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
168 }
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Sam Lantinga <slouken@lokigames.com>
parents:
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169 else if(data&JPF_JOY_UP)
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
170 {
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
171 if(!(joystick->hwdata->joystate&JPF_JOY_UP))
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
172 SDL_PrivateJoystickAxis(joystick,0,-127);
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
173 }
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
174 else if(joystick->hwdata->joystate&(JPF_JOY_UP|JPF_JOY_DOWN))
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
175 SDL_PrivateJoystickAxis(joystick,0,0);
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
176
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
177 if(data&JPF_JOY_LEFT)
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
178 {
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
179 if(!(joystick->hwdata->joystate&JPF_JOY_LEFT))
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
180 SDL_PrivateJoystickAxis(joystick,1,-127);
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
181 }
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
182 else if(data&JPF_JOY_RIGHT)
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
183 {
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
184 if(!(joystick->hwdata->joystate&JPF_JOY_RIGHT))
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
185 SDL_PrivateJoystickAxis(joystick,1,127);
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
186 }
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
187 else if(joystick->hwdata->joystate&(JPF_JOY_LEFT|JPF_JOY_RIGHT))
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
188 SDL_PrivateJoystickAxis(joystick,1,0);
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
189 }
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
190 else if(joystick->hwdata->joystate&(JPF_JOY_LEFT|JPF_JOY_RIGHT))
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
191 {
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
192 SDL_PrivateJoystickAxis(joystick,1,0);
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
193 }
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
194 else if(joystick->hwdata->joystate&(JPF_JOY_UP|JPF_JOY_DOWN))
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
195 {
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
196 SDL_PrivateJoystickAxis(joystick,0,0);
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
197 }
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
198
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
199 for(i=0;i<joystick->nbuttons;i++)
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
200 {
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
201 if( (data&joybut[i]) )
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
202 {
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
203 if(i==1)
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
204 data&=(~(joybut[2]));
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
205
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
206 if(!(joystick->hwdata->joystate&joybut[i]))
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
207 SDL_PrivateJoystickButton(joystick,i,SDL_PRESSED);
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
208 }
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
209 else if(joystick->hwdata->joystate&joybut[i])
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
210 SDL_PrivateJoystickButton(joystick,i,SDL_RELEASED);
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
211 }
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
212
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
213 joystick->hwdata->joystate=data;
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
214 }
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
215
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
216 return;
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
217 }
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
218
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
219 /* Function to close a joystick after use */
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
220 void SDL_SYS_JoystickClose(SDL_Joystick *joystick)
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
221 {
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
222 if(joystick->hwdata)
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
223 free(joystick->hwdata);
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
224 return;
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
225 }
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
226
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
227 /* Function to perform any system-specific joystick related cleanup */
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
228
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
229 void SDL_SYS_JoystickQuit(void)
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
230 {
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
231 if(LowLevelBase)
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
232 {
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
233 CloseLibrary(LowLevelBase);
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
234 LowLevelBase=NULL;
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
235 SDL_numjoysticks=0;
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
236 }
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
237
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
238 return;
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
239 }
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
240