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Support for "Arcade Racer" wheel perihperal

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This commit is contained in:
David Walters 2017-11-11 11:30:20 +00:00
parent 66f8672c00
commit 16c0eaac5e
1 changed files with 102 additions and 4 deletions
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106
input.cpp
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@ -46,15 +46,18 @@ static uint32_t input_mode[ MAX_CONTROLLERS ] = {0};
// Supported Devices
//------------------------------------------------------------------------------
#define RETRO_DEVICE_SS_PAD RETRO_DEVICE_SUBCLASS( RETRO_DEVICE_JOYPAD, 0 )
#define RETRO_DEVICE_SS_3D_PAD RETRO_DEVICE_SUBCLASS( RETRO_DEVICE_ANALOG, 0 )
#define RETRO_DEVICE_SS_MOUSE RETRO_DEVICE_SUBCLASS( RETRO_DEVICE_MOUSE, 0 )
#define RETRO_DEVICE_SS_PAD RETRO_DEVICE_SUBCLASS( RETRO_DEVICE_JOYPAD, 0 )
#define RETRO_DEVICE_SS_3D_PAD RETRO_DEVICE_SUBCLASS( RETRO_DEVICE_ANALOG, 0 )
#define RETRO_DEVICE_SS_MOUSE RETRO_DEVICE_SUBCLASS( RETRO_DEVICE_MOUSE, 0 )
#define RETRO_DEVICE_SS_WHEEL RETRO_DEVICE_SUBCLASS( RETRO_DEVICE_ANALOG, 1 )
enum { INPUT_DEVICE_TYPES_COUNT = 1 /*none*/ + 3 }; // <-- update me!
enum { INPUT_DEVICE_TYPES_COUNT = 1 /*none*/ + 2 }; // <-- update me!
static const struct retro_controller_description input_device_types[ INPUT_DEVICE_TYPES_COUNT ] =
{
{ "Control Pad", RETRO_DEVICE_JOYPAD },
{ "3D Control Pad", RETRO_DEVICE_SS_3D_PAD },
{ "Arcade Racer", RETRO_DEVICE_SS_WHEEL },
// { "Mouse", RETRO_DEVICE_SS_MOUSE }, // todo !
{ NULL, 0 },
};
@ -109,6 +112,27 @@ static const unsigned input_map_3d_pad[ INPUT_MAP_3D_PAD_SIZE ] =
static const unsigned input_map_3d_pad_mode_switch =
RETRO_DEVICE_ID_JOYPAD_SELECT;
/* Arcade Racer (wheel) */
enum { INPUT_MAP_WHEEL_BITSHIFT = 4 };
enum { INPUT_MAP_WHEEL_SIZE = 7 };
static const unsigned input_map_wheel[ INPUT_MAP_WHEEL_SIZE ] =
{
// libretro input at position || maps to Saturn on bit
//-----------------------------------------------------------------------------
RETRO_DEVICE_ID_JOYPAD_A, // A(right) -> B 4
RETRO_DEVICE_ID_JOYPAD_R, // R1 -> C 5
RETRO_DEVICE_ID_JOYPAD_B, // B(down) -> A 6
RETRO_DEVICE_ID_JOYPAD_START, // Start -> Start 7
RETRO_DEVICE_ID_JOYPAD_L, // L1 -> Z 8
RETRO_DEVICE_ID_JOYPAD_X, // X(top) -> Y 9
RETRO_DEVICE_ID_JOYPAD_Y, // Y(left) -> X 10
};
static const unsigned input_map_wheel_shift_left =
RETRO_DEVICE_ID_JOYPAD_L2;
static const unsigned input_map_wheel_shift_right =
RETRO_DEVICE_ID_JOYPAD_R2;
//------------------------------------------------------------------------------
// Global Functions
@ -339,6 +363,75 @@ void input_update( retro_input_state_t input_state_cb )
break;
case RETRO_DEVICE_SS_WHEEL:
{
//
// -- Wheel buttons
// input_map_wheel is configured to quickly map libretro buttons to the correct bits for the Saturn.
for ( int i = 0; i < INPUT_MAP_WHEEL_SIZE; ++i ) {
const uint16_t bit = ( 1 << ( i + INPUT_MAP_WHEEL_BITSHIFT ) );
p_input->buttons |= input_state_cb( iplayer, RETRO_DEVICE_JOYPAD, 0, input_map_wheel[ i ] ) ? bit : 0;
}
// shift-paddles
p_input->buttons |= input_state_cb( iplayer, RETRO_DEVICE_JOYPAD, 0, input_map_wheel_shift_left ) ? ( 1 << 0 ) : 0;
p_input->buttons |= input_state_cb( iplayer, RETRO_DEVICE_JOYPAD, 0, input_map_wheel_shift_right ) ? ( 1 << 1 ) : 0;
//
// -- analog wheel
int analog_x = input_state_cb( iplayer, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_LEFT,
RETRO_DEVICE_ID_ANALOG_X );
// Analog stick deadzone
if ( astick_deadzone > 0 )
{
static const int ASTICK_MAX = 0x8000;
const float scale = ((float)ASTICK_MAX/(float)(ASTICK_MAX - astick_deadzone));
if ( analog_x < -astick_deadzone )
{
// Re-scale analog stick range
float scaled = (-analog_x - astick_deadzone)*scale;
analog_x = (int)round(-scaled);
if (analog_x < -32767) {
analog_x = -32767;
}
}
else if ( analog_x > astick_deadzone )
{
// Re-scale analog stick range
float scaled = (analog_x - astick_deadzone)*scale;
analog_x = (int)round(scaled);
if (analog_x > +32767) {
analog_x = +32767;
}
}
else
{
analog_x = 0;
}
}
//
// -- format input data
// Convert analog values into direction values.
uint16_t right = analog_x > 0 ? analog_x : 0;
uint16_t left = analog_x < 0 ? -analog_x : 0;
p_input->u8[0x2] = ((left >> 0) & 0xff);
p_input->u8[0x3] = ((left >> 8) & 0xff);
p_input->u8[0x4] = ((right >> 0) & 0xff);
p_input->u8[0x5] = ((right >> 8) & 0xff);
}
break;
}; // switch ( input_type[ iplayer ] )
}; // for each player
@ -380,6 +473,11 @@ void retro_set_controller_port_device( unsigned in_port, unsigned device )
SMPC_SetInput( in_port, "mouse", (uint8*)&input_data[ in_port ] );
break;*/
case RETRO_DEVICE_SS_WHEEL:
log_cb( RETRO_LOG_INFO, "Controller %u: Arcade Racer\n", (in_port+1) );
SMPC_SetInput( in_port, "wheel", (uint8*)&input_data[ in_port ] );
break;
default:
log_cb( RETRO_LOG_WARN, "Controller %u: Unsupported Device (%u)\n", (in_port+1), device );
SMPC_SetInput( in_port, "none", (uint8*)&input_data[ in_port ] );