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_OpenJoypad Scol 6.x or above required

Open a joypad and init the data callback.

Prototype :

fun [Chn fun [ObjJoypad u0 [I I] I [I I] I [I I I I] [I I] [I r1]] u1 u0] ObjJoypad

• Chn : a channel, typically the current channel
• fun [ObjJoypad u0 [I I] I [I I] I [I I I I] [I I] [I r1]] u1 : the reflex. The supplemental arguments are :
  • [I I] : X-axis, usually the left-right movement of the joypad, Y-axis, usually the forward-backward movement of the joypad
  • I : Z-axis, often the throttle control. If the joystick does not have this axis, the value is 0.
  • [I I] : X-axis rotation. If the joystick does not have this axis, the value is 0, Y-axis rotation. If the joystick does not have this axis, the value is 0.
  • I : Z-axis rotation (often called the rudder). If the joystick does not have this axis, the value is 0.
  • [I I I I] : Direction controllers, such as point-of-view hats. The position is indicated in hundredths of a degree clockwise from north (away from the user). The center position is normally reported as - 1. For indicators that have only five positions, the value for a controller is - 1, 0, 9,000, 18,000, or 27,000.
  • [I I] : Two additional axis values (formerly called the u-axis and v-axis) whose semantics depend on the joystick.
  • [I r1] : Array of buttons.
• u0 : an user parameter, at your convenience

Return : ObjJoypad the new object or nil if error.

See also :