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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_OS2 |
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25 |
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26 /* OS/2 Joystick driver, contributed by Daniel Caetano */ |
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27 |
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28 #include <mem.h> |
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29 |
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30 #define INCL_DOSDEVICES |
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31 #define INCL_DOSDEVIOCTL |
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32 #define INCL_DOSMEMMGR |
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33 #include <os2.h> |
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34 #include "joyos2.h" |
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35 |
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36 #include "SDL_joystick.h" |
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37 #include "SDL_events.h" |
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38 #include "../SDL_sysjoystick.h" |
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39 #include "../SDL_joystick_c.h" |
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40 |
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41 HFILE hJoyPort = NULL; /* Joystick GAME$ Port Address */ |
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42 #define MAX_JOYSTICKS 2 /* Maximum of two joysticks */ |
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43 #define MAX_AXES 4 /* each joystick can have up to 4 axes */ |
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44 #define MAX_BUTTONS 8 /* 8 buttons */ |
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45 #define MAX_HATS 0 /* 0 hats - OS/2 doesn't support it */ |
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46 #define MAX_BALLS 0 /* and 0 balls - OS/2 doesn't support it */ |
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47 #define AXIS_MIN -32768 /* minimum value for axes coordinate */ |
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48 #define AXIS_MAX 32767 /* maximum value for axes coordinate */ |
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49 #define MAX_JOYNAME 128 /* Joystick name may have 128 characters */ |
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50 /* limit axes to 256 possible positions to filter out noise */ |
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51 #define JOY_AXIS_THRESHOLD (((AXIS_MAX)-(AXIS_MIN))/256) |
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52 /* Calc Button Flag for buttons A to D */ |
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53 #define JOY_BUTTON_FLAG(n) (1<<n) |
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54 |
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55 /* Joystick data... hold information about detected devices */ |
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56 typedef struct SYS_JoyData_s |
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57 { |
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58 Sint8 id; // Device ID |
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59 char szDeviceName[MAX_JOYNAME]; // Device Name |
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60 char axes; // Number of axes |
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61 char buttons; // Number of buttons |
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62 char hats; // Number of buttons |
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63 char balls; // Number of buttons |
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64 int axes_min[MAX_AXES]; // minimum callibration value for axes |
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65 int axes_med[MAX_AXES]; // medium callibration value for axes |
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66 int axes_max[MAX_AXES]; // maximum callibration value for axes |
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67 int buttoncalc[4]; // Used for buttons 5, 6, 7 and 8. |
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68 } SYS_JoyData_t, *SYS_JoyData_p; |
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69 |
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70 SYS_JoyData_t SYS_JoyData[MAX_JOYSTICKS]; |
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71 |
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72 |
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73 /* Structure used to convert data from OS/2 driver format to SDL format */ |
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74 struct joystick_hwdata |
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75 { |
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76 Sint8 id; |
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77 struct _transaxes |
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78 { |
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79 int offset; /* Center Offset */ |
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80 float scale1; /* Center to left/up Scale */ |
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81 float scale2; /* Center to right/down Scale */ |
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82 } transaxes[MAX_AXES]; |
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83 }; |
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84 |
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85 /* Structure used to get values from Joystick Environment Variable */ |
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86 struct _joycfg |
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87 { |
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88 char name[MAX_JOYNAME]; |
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89 unsigned int axes; |
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90 unsigned int buttons; |
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91 unsigned int hats; |
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92 unsigned int balls; |
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93 }; |
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94 |
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95 /* OS/2 Implementation Function Prototypes */ |
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96 APIRET joyPortOpen(HFILE * hGame); |
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97 void joyPortClose(HFILE * hGame); |
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98 int joyGetData(char *joyenv, char *name, char stopchar, size_t maxchars); |
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99 int joyGetEnv(struct _joycfg * joydata); |
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100 |
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101 |
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102 |
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103 /************************************************************************/ |
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104 /* Function to scan the system for joysticks. */ |
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105 /* This function should set SDL_numjoysticks to the number of available */ |
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106 /* joysticks. Joystick 0 should be the system default joystick. */ |
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107 /* It should return 0, or -1 on an unrecoverable fatal error. */ |
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108 /************************************************************************/ |
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109 int SDL_SYS_JoystickInit(void) |
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110 { |
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111 APIRET rc; /* Generic OS/2 return code */ |
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112 GAME_PORT_STRUCT stJoyStatus; /* Joystick Status Structure */ |
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113 GAME_PARM_STRUCT stGameParms; /* Joystick Parameter Structure */ |
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114 GAME_CALIB_STRUCT stGameCalib; /* Calibration Struct */ |
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115 ULONG ulDataLen; /* Size of data */ |
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116 ULONG ulLastTick; /* Tick Counter for timing operations */ |
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117 Uint8 maxdevs; /* Maximum number of devices */ |
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118 Uint8 numdevs; /* Number of present devices */ |
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119 Uint8 maxbut; /* Maximum number of buttons... */ |
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120 Uint8 i; /* Temporary Count Vars */ |
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121 Uint8 ucNewJoystickMask; /* Mask for Joystick Detection */ |
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122 struct _joycfg joycfg; /* Joy Configuration from envvar */ |
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123 |
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124 |
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125 /* Get Max Number of Devices */ |
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126 rc = joyPortOpen(&hJoyPort); /* Open GAME$ port */ |
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127 if (rc != 0) return 0; /* Cannot open... report no joystick */ |
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128 ulDataLen = sizeof(stGameParms); |
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129 rc = DosDevIOCtl(hJoyPort, IOCTL_CAT_USER, GAME_GET_PARMS, |
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130 NULL, 0, NULL, &stGameParms, ulDataLen, &ulDataLen); /* Ask device info */ |
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131 if (rc != 0) |
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132 { |
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133 joyPortClose(&hJoyPort); |
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134 SDL_SetError("Could not read joystick port."); |
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135 return -1; |
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136 } |
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137 if (stGameParms.useA != 0) maxdevs++; |
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138 if (stGameParms.useB != 0) maxdevs++; |
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139 if ( maxdevs > MAX_JOYSTICKS ) maxdevs = MAX_JOYSTICKS; |
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140 |
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141 /* Defines min/max axes values (callibration) */ |
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142 ulDataLen = sizeof(stGameCalib); |
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143 rc = DosDevIOCtl(hJoyPort, IOCTL_CAT_USER, GAME_GET_CALIB, |
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144 NULL, 0, NULL, &stGameCalib, ulDataLen, &ulDataLen); |
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145 if (rc != 0) |
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146 { |
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147 joyPortClose(&hJoyPort); |
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148 SDL_SetError("Could not read callibration data."); |
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149 return -1; |
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150 } |
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151 |
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152 /* Determine how many joysticks are active */ |
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153 numdevs = 0; /* Points no device */ |
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154 ucNewJoystickMask = 0x0F; /* read all 4 joystick axis */ |
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155 ulDataLen = sizeof(ucNewJoystickMask); |
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156 rc = DosDevIOCtl(hJoyPort, IOCTL_CAT_USER, GAME_PORT_RESET, |
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157 &ucNewJoystickMask, ulDataLen, &ulDataLen, NULL, 0, NULL); |
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158 if (rc == 0) |
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159 { |
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160 ulDataLen = sizeof(stJoyStatus); |
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161 rc = DosDevIOCtl(hJoyPort, IOCTL_CAT_USER, GAME_PORT_GET, |
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162 NULL, 0, NULL, &stJoyStatus, ulDataLen, &ulDataLen); |
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163 if (rc != 0) |
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164 { |
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165 joyPortClose(&hJoyPort); |
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166 SDL_SetError("Could not call joystick port."); |
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167 return -1; |
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168 } |
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169 ulLastTick = stJoyStatus.ulJs_Ticks; |
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170 while (stJoyStatus.ulJs_Ticks == ulLastTick) |
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171 { |
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172 rc = DosDevIOCtl(hJoyPort, IOCTL_CAT_USER, GAME_PORT_GET, |
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173 NULL, 0, NULL, &stJoyStatus, ulDataLen, &ulDataLen); |
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174 } |
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175 if ((stJoyStatus.ucJs_JoyStickMask & 0x03) > 0) numdevs++; |
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176 if (((stJoyStatus.ucJs_JoyStickMask >> 2) & 0x03) > 0) numdevs++; |
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177 } |
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178 |
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179 if (numdevs>maxdevs) numdevs=maxdevs; |
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180 |
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181 /* If *any* joystick was detected... Let's configure SDL for them */ |
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182 if (numdevs > 0) |
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183 { |
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184 /* Verify if it is a "user defined" joystick */ |
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185 if (joyGetEnv(&joycfg)) |
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186 { |
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187 GAME_3POS_STRUCT * axis[4]; |
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188 axis[0] = &stGameCalib.Ax; |
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189 axis[1] = &stGameCalib.Ay; |
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190 axis[2] = &stGameCalib.Bx; |
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191 axis[3] = &stGameCalib.By; |
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192 /* Say it has one device only (user defined is always one device only) */ |
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193 numdevs = 1; |
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194 /* Define Device 0 as... */ |
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195 SYS_JoyData[0].id=0; |
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196 /* Define Number of Axes... up to 4 */ |
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197 if (joycfg.axes>MAX_AXES) joycfg.axes = MAX_AXES; |
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198 SYS_JoyData[0].axes = joycfg.axes; |
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199 /* Define number of buttons... 8 if 2 axes, 6 if 3 axes and 4 if 4 axes */ |
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200 maxbut = MAX_BUTTONS; |
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201 if (joycfg.axes>2) maxbut-=((joycfg.axes-2)<<1); /* MAX_BUTTONS - 2*(axes-2) */ |
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202 if (joycfg.buttons > maxbut) joycfg.buttons = maxbut; |
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203 SYS_JoyData[0].buttons = joycfg.buttons; |
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204 /* Define number of hats */ |
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205 if (joycfg.hats > MAX_HATS) joycfg.hats = MAX_HATS; |
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206 SYS_JoyData[0].hats = joycfg.hats; |
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207 /* Define number of balls */ |
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208 if (joycfg.balls > MAX_BALLS) joycfg.balls = MAX_BALLS; |
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209 SYS_JoyData[0].balls = joycfg.balls; |
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210 /* Initialize Axes Callibration Values */ |
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211 for (i=0; i<joycfg.axes; i++) |
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212 { |
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213 SYS_JoyData[0].axes_min[i] = axis[i]->lower; |
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214 SYS_JoyData[0].axes_med[i] = axis[i]->centre; |
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215 SYS_JoyData[0].axes_max[i] = axis[i]->upper; |
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216 } |
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217 /* Initialize Buttons 5 to 8 structures */ |
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218 if (joycfg.buttons>=5) SYS_JoyData[0].buttoncalc[0]=((axis[2]->lower+axis[3]->centre)>>1); |
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219 if (joycfg.buttons>=6) SYS_JoyData[0].buttoncalc[1]=((axis[3]->lower+axis[3]->centre)>>1); |
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220 if (joycfg.buttons>=7) SYS_JoyData[0].buttoncalc[2]=((axis[2]->upper+axis[3]->centre)>>1); |
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221 if (joycfg.buttons>=8) SYS_JoyData[0].buttoncalc[3]=((axis[3]->upper+axis[3]->centre)>>1); |
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222 /* Intialize Joystick Name */ |
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223 SDL_strlcpy (SYS_JoyData[0].szDeviceName,joycfg.name, SDL_arraysize(SYS_JoyData[0].szDeviceName)); |
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224 } |
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225 /* Default Init ... autoconfig */ |
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226 else |
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227 { |
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228 /* if two devices were detected... configure as Joy1 4 axis and Joy2 2 axis */ |
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229 if (numdevs==2) |
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230 { |
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231 /* Define Device 0 as 4 axes, 4 buttons */ |
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232 SYS_JoyData[0].id=0; |
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233 SYS_JoyData[0].axes = 4; |
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234 SYS_JoyData[0].buttons = 4; |
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235 SYS_JoyData[0].hats = 0; |
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236 SYS_JoyData[0].balls = 0; |
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237 SYS_JoyData[0].axes_min[0] = stGameCalib.Ax.lower; |
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238 SYS_JoyData[0].axes_med[0] = stGameCalib.Ax.centre; |
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239 SYS_JoyData[0].axes_max[0] = stGameCalib.Ax.upper; |
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240 SYS_JoyData[0].axes_min[1] = stGameCalib.Ay.lower; |
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241 SYS_JoyData[0].axes_med[1] = stGameCalib.Ay.centre; |
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242 SYS_JoyData[0].axes_max[1] = stGameCalib.Ay.upper; |
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243 SYS_JoyData[0].axes_min[2] = stGameCalib.Bx.lower; |
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244 SYS_JoyData[0].axes_med[2] = stGameCalib.Bx.centre; |
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245 SYS_JoyData[0].axes_max[2] = stGameCalib.Bx.upper; |
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246 SYS_JoyData[0].axes_min[3] = stGameCalib.By.lower; |
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247 SYS_JoyData[0].axes_med[3] = stGameCalib.By.centre; |
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248 SYS_JoyData[0].axes_max[3] = stGameCalib.By.upper; |
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249 /* Define Device 1 as 2 axes, 2 buttons */ |
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250 SYS_JoyData[1].id=1; |
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251 SYS_JoyData[1].axes = 2; |
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252 SYS_JoyData[1].buttons = 2; |
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253 SYS_JoyData[1].hats = 0; |
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254 SYS_JoyData[1].balls = 0; |
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255 SYS_JoyData[1].axes_min[0] = stGameCalib.Bx.lower; |
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256 SYS_JoyData[1].axes_med[0] = stGameCalib.Bx.centre; |
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257 SYS_JoyData[1].axes_max[0] = stGameCalib.Bx.upper; |
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258 SYS_JoyData[1].axes_min[1] = stGameCalib.By.lower; |
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259 SYS_JoyData[1].axes_med[1] = stGameCalib.By.centre; |
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260 SYS_JoyData[1].axes_max[1] = stGameCalib.By.upper; |
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261 } |
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262 /* One joystick only? */ |
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263 else |
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264 { |
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265 /* If it is joystick A... */ |
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266 if ((stJoyStatus.ucJs_JoyStickMask & 0x03) > 0) |
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267 { |
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268 /* Define Device 0 as 2 axes, 4 buttons */ |
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269 SYS_JoyData[0].id=0; |
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270 SYS_JoyData[0].axes = 2; |
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271 SYS_JoyData[0].buttons = 4; |
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272 SYS_JoyData[0].hats = 0; |
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273 SYS_JoyData[0].balls = 0; |
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274 SYS_JoyData[0].axes_min[0] = stGameCalib.Ax.lower; |
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275 SYS_JoyData[0].axes_med[0] = stGameCalib.Ax.centre; |
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276 SYS_JoyData[0].axes_max[0] = stGameCalib.Ax.upper; |
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277 SYS_JoyData[0].axes_min[1] = stGameCalib.Ay.lower; |
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278 SYS_JoyData[0].axes_med[1] = stGameCalib.Ay.centre; |
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279 SYS_JoyData[0].axes_max[1] = stGameCalib.Ay.upper; |
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280 } |
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281 /* If not, it is joystick B */ |
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282 else |
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283 { |
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284 /* Define Device 1 as 2 axes, 2 buttons */ |
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285 SYS_JoyData[0].id=1; |
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286 SYS_JoyData[0].axes = 2; |
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287 SYS_JoyData[0].buttons = 2; |
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288 SYS_JoyData[0].hats = 0; |
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289 SYS_JoyData[0].balls = 0; |
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290 SYS_JoyData[0].axes_min[0] = stGameCalib.Bx.lower; |
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291 SYS_JoyData[0].axes_med[0] = stGameCalib.Bx.centre; |
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292 SYS_JoyData[0].axes_max[0] = stGameCalib.Bx.upper; |
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293 SYS_JoyData[0].axes_min[1] = stGameCalib.By.lower; |
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294 SYS_JoyData[0].axes_med[1] = stGameCalib.By.centre; |
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295 SYS_JoyData[0].axes_max[1] = stGameCalib.By.upper; |
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296 } |
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297 } |
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298 /* Hack to define Joystick Port Names */ |
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299 if ( numdevs > maxdevs ) numdevs = maxdevs; |
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300 for (i=0; i<numdevs; i++) |
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301 SDL_snprintf (SYS_JoyData[i].szDeviceName, SDL_arraysize(SYS_JoyData[i].szDeviceName), "Default Joystick %c", 'A'+SYS_JoyData[i].id); |
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302 |
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303 } |
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304 } |
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305 /* Return the number of devices found */ |
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306 return(numdevs); |
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307 } |
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308 |
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309 |
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310 /***********************************************************/ |
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311 /* Function to get the device-dependent name of a joystick */ |
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312 /***********************************************************/ |
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313 const char *SDL_SYS_JoystickName(int index) |
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314 { |
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315 /* No need to verify if device exists, already done in upper layer */ |
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316 return(SYS_JoyData[index].szDeviceName); |
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317 } |
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318 |
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319 |
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320 |
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321 /******************************************************************************/ |
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322 /* Function to open a joystick for use. */ |
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323 /* The joystick to open is specified by the index field of the joystick. */ |
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324 /* This should fill the nbuttons and naxes fields of the joystick structure. */ |
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325 /* It returns 0, or -1 if there is an error. */ |
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326 /******************************************************************************/ |
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327 int SDL_SYS_JoystickOpen(SDL_Joystick *joystick) |
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328 { |
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329 int index; /* Index shortcut for index in joystick structure */ |
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330 int i; /* Generic Counter */ |
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331 |
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332 /* allocate memory for system specific hardware data */ |
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333 joystick->hwdata = (struct joystick_hwdata *) SDL_malloc(sizeof(*joystick->hwdata)); |
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334 if (joystick->hwdata == NULL) |
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335 { |
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336 SDL_OutOfMemory(); |
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337 return(-1); |
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338 } |
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339 /* Reset Hardware Data */ |
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340 SDL_memset(joystick->hwdata, 0, sizeof(*joystick->hwdata)); |
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341 |
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342 /* ShortCut Pointer */ |
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343 index = joystick->index; |
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344 /* Define offsets and scales for all axes */ |
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345 joystick->hwdata->id = SYS_JoyData[index].id; |
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346 for ( i = 0; i < MAX_AXES; ++i ) |
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347 { |
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348 if ( (i<2) || i < SYS_JoyData[index].axes ) |
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349 { |
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350 joystick->hwdata->transaxes[i].offset = ((AXIS_MAX + AXIS_MIN)>>1) - SYS_JoyData[index].axes_med[i]; |
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351 //joystick->hwdata->transaxes[i].scale = (float)((AXIS_MAX - AXIS_MIN)/(SYS_JoyData[index].axes_max[i]-SYS_JoyData[index].axes_min[i])); |
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352 joystick->hwdata->transaxes[i].scale1 = (float)abs((AXIS_MIN/SYS_JoyData[index].axes_min[i])); |
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353 joystick->hwdata->transaxes[i].scale2 = (float)abs((AXIS_MAX/SYS_JoyData[index].axes_max[i])); |
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354 } |
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355 else |
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356 { |
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357 joystick->hwdata->transaxes[i].offset = 0; |
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358 //joystick->hwdata->transaxes[i].scale = 1.0; /* Just in case */ |
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359 joystick->hwdata->transaxes[i].scale1 = 1.0; /* Just in case */ |
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360 joystick->hwdata->transaxes[i].scale2 = 1.0; /* Just in case */ |
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361 } |
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362 } |
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363 |
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364 /* fill nbuttons, naxes, and nhats fields */ |
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365 joystick->nbuttons = SYS_JoyData[index].buttons; |
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366 joystick->naxes = SYS_JoyData[index].axes; |
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367 /* joystick->nhats = SYS_JoyData[index].hats; */ |
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368 joystick->nhats = 0; /* No support for hats at this time */ |
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369 /* joystick->nballs = SYS_JoyData[index].balls; */ |
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370 joystick->nballs = 0; /* No support for balls at this time */ |
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371 return 0; |
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372 } |
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373 |
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374 |
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375 |
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376 /***************************************************************************/ |
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377 /* Function to update the state of a joystick - called as a device poll. */ |
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378 /* This function shouldn't update the joystick structure directly, */ |
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379 /* but instead should call SDL_PrivateJoystick*() to deliver events */ |
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380 /* and update joystick device state. */ |
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381 /***************************************************************************/ |
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382 void SDL_SYS_JoystickUpdate(SDL_Joystick *joystick) |
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383 { |
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384 APIRET rc; /* Generic OS/2 return code */ |
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385 int index; /* index shortcurt to joystick index */ |
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386 int i; /* Generic counter */ |
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387 int normbut; /* Number of buttons reported by joystick */ |
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388 int corr; /* Correction for button names */ |
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389 Sint16 value, change; /* Values used to update axis values */ |
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390 struct _transaxes *transaxes; /* Shortcut for Correction structure */ |
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391 Uint32 pos[MAX_AXES]; /* Vector to inform the Axis status */ |
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392 ULONG ulDataLen; /* Size of data */ |
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393 GAME_STATUS_STRUCT stGameStatus; /* Joystick Status Structure */ |
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394 |
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395 ulDataLen = sizeof(stGameStatus); |
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396 rc = DosDevIOCtl(hJoyPort, IOCTL_CAT_USER, GAME_GET_STATUS, |
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397 NULL, 0, NULL, &stGameStatus, ulDataLen, &ulDataLen); |
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398 if (rc != 0) |
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399 { |
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400 SDL_SetError("Could not read joystick status."); |
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401 return; /* Could not read data */ |
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402 } |
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403 |
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404 /* Shortcut pointer */ |
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405 index = joystick->index; |
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406 /* joystick motion events */ |
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407 |
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408 if (SYS_JoyData[index].id == 0) |
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409 { |
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410 pos[0] = stGameStatus.curdata.A.x; |
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411 pos[1] = stGameStatus.curdata.A.y; |
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412 if (SYS_JoyData[index].axes >= 3) pos[2] = stGameStatus.curdata.B.x; |
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413 else pos[2]=0; |
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414 if (SYS_JoyData[index].axes >= 4) pos[3] = stGameStatus.curdata.B.y; |
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415 else pos[3]=0; |
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416 pos[4]=0; /* OS/2 basic drivers do not support more than 4 axes joysticks */ |
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417 pos[5]=0; |
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418 } |
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419 else if (SYS_JoyData[index].id == 1) |
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420 { |
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421 pos[0] = stGameStatus.curdata.B.x; |
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422 pos[1] = stGameStatus.curdata.B.y; |
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423 pos[2]=0; |
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424 pos[3]=0; |
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425 pos[4]=0; |
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426 pos[5]=0; |
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427 } |
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428 |
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429 /* Corrects the movements using the callibration */ |
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430 transaxes = joystick->hwdata->transaxes; |
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431 for (i = 0; i < joystick->naxes; i++) |
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432 { |
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433 value = pos[i] + transaxes[i].offset; |
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434 if (value<0) |
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435 { |
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436 value*=transaxes[i].scale1; |
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437 if (value>0) value = AXIS_MIN; |
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438 } |
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439 else |
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440 { |
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441 value*=transaxes[i].scale2; |
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442 if (value<0) value = AXIS_MAX; |
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443 } |
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444 change = (value - joystick->axes[i]); |
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445 if ( (change < -JOY_AXIS_THRESHOLD) || (change > JOY_AXIS_THRESHOLD) ) |
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446 { |
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447 SDL_PrivateJoystickAxis(joystick, (Uint8)i, (Sint16)value); |
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448 } |
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449 } |
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450 |
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451 /* joystick button A to D events */ |
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452 if (SYS_JoyData[index].id == 1) corr = 2; |
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453 else corr = 0; |
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454 normbut=4; /* Number of normal buttons */ |
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455 if (joystick->nbuttons<normbut) normbut = joystick->nbuttons; |
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456 for ( i = corr; (i-corr) < normbut; ++i ) |
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457 { |
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458 /* |
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459 Button A: 1110 0000 |
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460 Button B: 1101 0000 |
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461 Button C: 1011 0000 |
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462 Button D: 0111 0000 |
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463 */ |
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464 if ( (~stGameStatus.curdata.butMask)>>4 & JOY_BUTTON_FLAG(i) ) |
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465 { |
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466 if ( ! joystick->buttons[i-corr] ) |
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467 { |
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468 SDL_PrivateJoystickButton(joystick, (Uint8)(i-corr), SDL_PRESSED); |
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469 } |
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470 } |
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471 else |
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472 { |
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473 if ( joystick->buttons[i-corr] ) |
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474 { |
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475 SDL_PrivateJoystickButton(joystick, (Uint8)(i-corr), SDL_RELEASED); |
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476 } |
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477 } |
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478 } |
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479 |
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480 /* Joystick button E to H buttons */ |
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481 /* |
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482 Button E: Axis 2 X Left |
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483 Button F: Axis 2 Y Up |
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484 Button G: Axis 2 X Right |
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485 Button H: Axis 2 Y Down |
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486 */ |
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487 if (joystick->nbuttons>=5) |
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488 { |
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489 if (stGameStatus.curdata.B.x < SYS_JoyData[index].buttoncalc[0]) SDL_PrivateJoystickButton(joystick, (Uint8)4, SDL_PRESSED); |
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490 else SDL_PrivateJoystickButton(joystick, (Uint8)4, SDL_RELEASED); |
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491 } |
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492 if (joystick->nbuttons>=6) |
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493 { |
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494 if (stGameStatus.curdata.B.y < SYS_JoyData[index].buttoncalc[1]) SDL_PrivateJoystickButton(joystick, (Uint8)5, SDL_PRESSED); |
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495 else SDL_PrivateJoystickButton(joystick, (Uint8)5, SDL_RELEASED); |
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496 } |
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497 if (joystick->nbuttons>=7) |
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498 { |
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499 if (stGameStatus.curdata.B.x > SYS_JoyData[index].buttoncalc[2]) SDL_PrivateJoystickButton(joystick, (Uint8)6, SDL_PRESSED); |
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500 else SDL_PrivateJoystickButton(joystick, (Uint8)6, SDL_RELEASED); |
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501 } |
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502 if (joystick->nbuttons>=8) |
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503 { |
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504 if (stGameStatus.curdata.B.y > SYS_JoyData[index].buttoncalc[3]) SDL_PrivateJoystickButton(joystick, (Uint8)7, SDL_PRESSED); |
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505 else SDL_PrivateJoystickButton(joystick, (Uint8)7, SDL_RELEASED); |
|
506 } |
|
507 |
|
508 /* joystick hat events */ |
|
509 /* Not Supported under OS/2 */ |
|
510 /* joystick ball events */ |
|
511 /* Not Supported under OS/2 */ |
|
512 } |
|
513 |
|
514 |
|
515 |
|
516 /******************************************/ |
|
517 /* Function to close a joystick after use */ |
|
518 /******************************************/ |
|
519 void SDL_SYS_JoystickClose(SDL_Joystick *joystick) |
|
520 { |
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521 if (joystick->hwdata != NULL) |
|
522 { |
|
523 /* free system specific hardware data */ |
|
524 SDL_free(joystick->hwdata); |
|
525 } |
|
526 } |
|
527 |
|
528 |
|
529 |
|
530 /********************************************************************/ |
|
531 /* Function to perform any system-specific joystick related cleanup */ |
|
532 /********************************************************************/ |
|
533 void SDL_SYS_JoystickQuit(void) |
|
534 { |
|
535 joyPortClose(&hJoyPort); |
|
536 } |
|
537 |
|
538 |
|
539 |
|
540 /************************/ |
|
541 /************************/ |
|
542 /* OS/2 Implementations */ |
|
543 /************************/ |
|
544 /************************/ |
|
545 |
|
546 |
|
547 /*****************************************/ |
|
548 /* Open Joystick Port, if not opened yet */ |
|
549 /*****************************************/ |
|
550 APIRET joyPortOpen(HFILE * hGame) |
|
551 { |
|
552 APIRET rc; /* Generic Return Code */ |
|
553 ULONG ulAction; /* ? */ |
|
554 ULONG ulVersion; /* Version of joystick driver */ |
|
555 ULONG ulDataLen; /* Size of version data */ |
|
556 |
|
557 /* Verifies if joyport is not already open... */ |
|
558 if (*hGame != NULL) return 0; |
|
559 /* Open GAME$ for read */ |
|
560 rc = DosOpen((PSZ)GAMEPDDNAME, hGame, &ulAction, 0, FILE_READONLY, |
|
561 FILE_OPEN, OPEN_ACCESS_READONLY | OPEN_SHARE_DENYNONE, NULL); |
|
562 if (rc != 0) |
|
563 { |
|
564 SDL_SetError("Could not open Joystick Port."); |
|
565 return -1; |
|
566 } |
|
567 |
|
568 /* Get Joystick Driver Version... must be 2.0 or higher */ |
|
569 ulVersion = 0; |
|
570 ulDataLen = sizeof(ulVersion); |
|
571 rc = DosDevIOCtl( *hGame, IOCTL_CAT_USER, GAME_GET_VERSION, |
|
572 NULL, 0, NULL, &ulVersion, ulDataLen, &ulDataLen); |
|
573 if (rc != 0) |
|
574 { |
|
575 joyPortClose(hGame); |
|
576 SDL_SetError("Could not get Joystick Driver version."); |
|
577 return -1; |
|
578 } |
|
579 if (ulVersion < GAME_VERSION) |
|
580 { |
|
581 joyPortClose(hGame); |
|
582 SDL_SetError("Driver too old. At least IBM driver version 2.0 required."); |
|
583 return -1; |
|
584 } |
|
585 return 0; |
|
586 } |
|
587 |
|
588 |
|
589 |
|
590 /****************************/ |
|
591 /* Close JoyPort, if opened */ |
|
592 /****************************/ |
|
593 void joyPortClose(HFILE * hGame) |
|
594 { |
|
595 if (*hGame != NULL) DosClose(*hGame); |
|
596 *hGame = NULL; |
|
597 } |
|
598 |
|
599 |
|
600 |
|
601 /***************************/ |
|
602 /* Get SDL Joystick EnvVar */ |
|
603 /***************************/ |
|
604 int joyGetEnv(struct _joycfg * joydata) |
|
605 { |
|
606 char *joyenv; /* Pointer to tested character */ |
|
607 char tempnumber[5]; /* Temporary place to put numeric texts */ |
|
608 |
|
609 joyenv = SDL_getenv("SDL_OS2_JOYSTICK"); |
|
610 if (joyenv == NULL) return 0; |
|
611 /* Joystick Environment is defined! */ |
|
612 while (*joyenv==' ' && *joyenv!=0) joyenv++; /* jump spaces... */ |
|
613 /* If the string name starts with '... get if fully */ |
|
614 if (*joyenv=='\'') joyenv+=joyGetData(++joyenv,joydata->name,'\'',sizeof(joydata->name)); |
|
615 /* If not, get it until the next space */ |
|
616 else if (*joyenv=='\"') joyenv+=joyGetData(++joyenv,joydata->name,'\"',sizeof(joydata->name)); |
|
617 else joyenv+=joyGetData(joyenv,joydata->name,' ',sizeof(joydata->name)); |
|
618 /* Now get the number of axes */ |
|
619 while (*joyenv==' ' && *joyenv!=0) joyenv++; /* jump spaces... */ |
|
620 joyenv+=joyGetData(joyenv,tempnumber,' ',sizeof(tempnumber)); |
|
621 joydata->axes = atoi(tempnumber); |
|
622 /* Now get the number of buttons */ |
|
623 while (*joyenv==' ' && *joyenv!=0) joyenv++; /* jump spaces... */ |
|
624 joyenv+=joyGetData(joyenv,tempnumber,' ',sizeof(tempnumber)); |
|
625 joydata->buttons = atoi(tempnumber); |
|
626 /* Now get the number of hats */ |
|
627 while (*joyenv==' ' && *joyenv!=0) joyenv++; /* jump spaces... */ |
|
628 joyenv+=joyGetData(joyenv,tempnumber,' ',sizeof(tempnumber)); |
|
629 joydata->hats = atoi(tempnumber); |
|
630 /* Now get the number of balls */ |
|
631 while (*joyenv==' ' && *joyenv!=0) joyenv++; /* jump spaces... */ |
|
632 joyenv+=joyGetData(joyenv,tempnumber,' ',sizeof(tempnumber)); |
|
633 joydata->balls = atoi(tempnumber); |
|
634 return 1; |
|
635 } |
|
636 |
|
637 |
|
638 |
|
639 /************************************************************************/ |
|
640 /* Get a text from in the string starting in joyenv until it finds */ |
|
641 /* the stopchar or maxchars is reached. The result is placed in name. */ |
|
642 /************************************************************************/ |
|
643 int joyGetData(char *joyenv, char *name, char stopchar, size_t maxchars) |
|
644 { |
|
645 char *nameptr; /* Pointer to the selected character */ |
|
646 int chcnt=0; /* Count how many characters where copied */ |
|
647 |
|
648 nameptr=name; |
|
649 while (*joyenv!=stopchar && *joyenv!=0) |
|
650 { |
|
651 if (nameptr<(name+(maxchars-1))) |
|
652 { |
|
653 *nameptr = *joyenv; /* Only copy if smaller than maximum */ |
|
654 nameptr++; |
|
655 } |
|
656 chcnt++; |
|
657 joyenv++; |
|
658 } |
|
659 if (*joyenv==stopchar) |
|
660 { |
|
661 joyenv++; /* Jump stopchar */ |
|
662 chcnt++; |
|
663 } |
|
664 *nameptr = 0; /* Mark last byte */ |
|
665 return chcnt; |
|
666 } |
|
667 |
|
668 #endif /* SDL_JOYSTICK_OS2 */ |