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annotate src/joystick/amigaos/SDL_sysjoystick.c @ 1863:0e44c6f90b95

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Fixed bug #241
author Sam Lantinga <slouken@libsdl.org>
date Tue, 20 Jun 2006 05:25:04 +0000
parents 92947e3a18db
children 782fd950bd46 c121d94672cb
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2006 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 Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 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 Lesser 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 Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 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 #include "SDL_config.h"
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23
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24 #ifdef SDL_JOYSTICK_AMIGA
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25
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26 /* This is the system specific header for the SDL joystick API */
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27
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28 #include <libraries/lowlevel.h>
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29 #if defined(__SASC) || defined(STORMC4_WOS)
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30 #include <proto/exec.h>
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31 #include <proto/lowlevel.h>
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32 #include <proto/graphics.h>
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33 #else
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34 #include <inline/exec.h>
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35 #include <inline/lowlevel.h>
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36 #include <inline/graphics.h>
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37 #endif
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38 #include "mydebug.h"
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39
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40 extern struct ExecBase *SysBase;
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41 extern struct GfxBase *GfxBase;
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42
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43 #include "SDL_joystick.h"
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44 #include "../SDL_sysjoystick.h"
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45 #include "../SDL_joystick_c.h"
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46
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47 /* Function to scan the system for joysticks.
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48 * This function should set SDL_numjoysticks to the number of available
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49 * joysticks. Joystick 0 should be the system default joystick.
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50 * It should return 0, or -1 on an unrecoverable fatal error.
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51 */
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52
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53
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54 /* Amiga specific datas */
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55 struct Library *LowLevelBase=NULL;
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56
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57 ULONG joybut[]=
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58 {
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59 JPF_BUTTON_RED,
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60 JPF_BUTTON_BLUE,
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61 JPF_BUTTON_PLAY,
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62 JPF_BUTTON_YELLOW,
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63 JPF_BUTTON_GREEN,
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64 JPF_BUTTON_FORWARD,
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65 JPF_BUTTON_REVERSE,
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66 };
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67
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68 struct joystick_hwdata
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69 {
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70 ULONG joystate;
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71 };
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72
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73 int SDL_SYS_JoystickInit(void)
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74 {
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75 if(!LowLevelBase)
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76 {
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77 if(LowLevelBase=OpenLibrary("lowlevel.library",37))
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78 return 2;
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79 }
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80 else
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81 return 2;
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82
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83 D(bug("%ld joysticks available.\n",SDL_numjoysticks));
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84
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85 return 0;
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86 }
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87
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88 /* Function to get the device-dependent name of a joystick */
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89 const char *SDL_SYS_JoystickName(int index)
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90 {
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91 if(index<2&&LowLevelBase)
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92 {
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93 switch(index)
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94 {
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95 case 0:
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96 return "Port 1 Amiga Joystick/Joypad";
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97 case 1:
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98 return "Port 2 Amiga Joystick/Joypad";
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99 }
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100 }
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101
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102 SDL_SetError("No joystick available with that index");
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103 return(NULL);
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104 }
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105
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106 /* Function to open a joystick for use.
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107 The joystick to open is specified by the index field of the joystick.
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108 This should fill the nbuttons and naxes fields of the joystick structure.
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109 It returns 0, or -1 if there is an error.
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110 */
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111
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112 int SDL_SYS_JoystickOpen(SDL_Joystick *joystick)
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113 {
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114 ULONG temp,i;
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115 D(bug("Opening joystick %ld\n",joystick->index));
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116
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117 if(!(joystick->hwdata=SDL_malloc(sizeof(struct joystick_hwdata))))
21
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118 return -1;
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119
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120 /* This loop is to check if the controller is a joypad */
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121
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122 for(i=0;i<20;i++)
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123 {
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124 temp=ReadJoyPort(joystick->index^1); // fix to invert amiga joyports
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125 WaitTOF();
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126 }
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127
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128 if((temp&JP_TYPE_MASK)==JP_TYPE_GAMECTLR)
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129 joystick->nbuttons=7;
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130 else
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131 joystick->nbuttons=3;
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132
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133 joystick->nhats=0;
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134 joystick->nballs=0;
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135 joystick->naxes=2;
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136 joystick->hwdata->joystate=0L;
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137
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138 return 0;
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139 }
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140
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141 /* Function to update the state of a joystick - called as a device poll.
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142 * This function shouldn't update the joystick structure directly,
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143 * but instead should call SDL_PrivateJoystick*() to deliver events
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144 * and update joystick device state.
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145 */
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146 void SDL_SYS_JoystickUpdate(SDL_Joystick *joystick)
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147 {
255
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148 ULONG data;
21
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149 int i;
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150
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151 if(joystick->index<2)
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152 {
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153 data=ReadJoyPort(joystick->index);
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154
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155 if(data&JP_DIRECTION_MASK)
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156 {
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157 if(data&JPF_JOY_DOWN)
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158 {
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159 if(!(joystick->hwdata->joystate&JPF_JOY_DOWN))
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160 SDL_PrivateJoystickAxis(joystick,0,127);
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161 }
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162 else if(data&JPF_JOY_UP)
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163 {
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164 if(!(joystick->hwdata->joystate&JPF_JOY_UP))
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165 SDL_PrivateJoystickAxis(joystick,0,-127);
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166 }
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167 else if(joystick->hwdata->joystate&(JPF_JOY_UP|JPF_JOY_DOWN))
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168 SDL_PrivateJoystickAxis(joystick,0,0);
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169
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170 if(data&JPF_JOY_LEFT)
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171 {
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172 if(!(joystick->hwdata->joystate&JPF_JOY_LEFT))
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173 SDL_PrivateJoystickAxis(joystick,1,-127);
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174 }
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175 else if(data&JPF_JOY_RIGHT)
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176 {
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177 if(!(joystick->hwdata->joystate&JPF_JOY_RIGHT))
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178 SDL_PrivateJoystickAxis(joystick,1,127);
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179 }
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180 else if(joystick->hwdata->joystate&(JPF_JOY_LEFT|JPF_JOY_RIGHT))
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181 SDL_PrivateJoystickAxis(joystick,1,0);
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182 }
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183 else if(joystick->hwdata->joystate&(JPF_JOY_LEFT|JPF_JOY_RIGHT))
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184 {
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185 SDL_PrivateJoystickAxis(joystick,1,0);
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186 }
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187 else if(joystick->hwdata->joystate&(JPF_JOY_UP|JPF_JOY_DOWN))
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188 {
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189 SDL_PrivateJoystickAxis(joystick,0,0);
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190 }
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191
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192 for(i=0;i<joystick->nbuttons;i++)
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193 {
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194 if( (data&joybut[i]) )
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195 {
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196 if(i==1)
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197 data&=(~(joybut[2]));
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198
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199 if(!(joystick->hwdata->joystate&joybut[i]))
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200 SDL_PrivateJoystickButton(joystick,i,SDL_PRESSED);
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201 }
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202 else if(joystick->hwdata->joystate&joybut[i])
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203 SDL_PrivateJoystickButton(joystick,i,SDL_RELEASED);
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204 }
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parents:
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205
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diff changeset
206 joystick->hwdata->joystate=data;
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207 }
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parents:
diff changeset
208
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parents:
diff changeset
209 return;
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parents:
diff changeset
210 }
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>
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212 /* Function to close a joystick after use */
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diff changeset
213 void SDL_SYS_JoystickClose(SDL_Joystick *joystick)
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diff changeset
214 {
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
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diff changeset
215 if(joystick->hwdata)
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
216 SDL_free(joystick->hwdata);
21
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217 return;
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)
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219
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220 /* Function to perform any system-specific joystick related cleanup */
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221
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Sam Lantinga <slouken@lokigames.com>
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222 void SDL_SYS_JoystickQuit(void)
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diff changeset
223 {
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
224 if(LowLevelBase)
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parents:
diff changeset
225 {
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
226 CloseLibrary(LowLevelBase);
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diff changeset
227 LowLevelBase=NULL;
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parents:
diff changeset
228 SDL_numjoysticks=0;
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diff changeset
229 }
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
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diff changeset
230 return;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
231 }
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
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diff changeset
232
1635
92947e3a18db Make sure code is only compiled if the appropriate subsystem is enabled
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
233 #endif /* SDL_JOYSTICK_AMIGA */