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input.cpp
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input.cpp
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#include "libretro.h"
#include "libretro_settings.h"
#include "mednafen/mednafen-types.h"
#include "mednafen/ss/ss.h"
#include "mednafen/ss/smpc.h"
#include "mednafen/state.h"
#include <math.h>
#include <stdio.h>
//------------------------------------------------------------------------------
// Locals
//------------------------------------------------------------------------------
#define MAX_CONTROLLERS 12 /* 2x 6 player adaptors */
static retro_environment_t environ_cb; /* cached during input_init_env */
static unsigned players = 2;
static int astick_deadzone = 0;
static int trigger_deadzone = 0;
static const int TRIGGER_MAX = 0xFFFF;
static float mouse_sensitivity = 1.0f;
static unsigned geometry_width = 0;
static unsigned geometry_height = 0;
static int pointer_pressed = 0;
static const int POINTER_PRESSED_CYCLES = 4;
static int pointer_cycles_after_released = 0;
static int pointer_pressed_last_x = 0;
static int pointer_pressed_last_y = 0;
typedef union
{
uint8_t u8[ 32 ];
uint16_t gun_pos[ 2 ];
uint16_t buttons;
} INPUT_DATA;
// Controller state buffer (per player)
static INPUT_DATA input_data[ MAX_CONTROLLERS ] = {0};
// Controller type (per player)
static uint32_t input_type[ MAX_CONTROLLERS ] = {0};
#define INPUT_MODE_3D_PAD_ANALOG ( 1 << 0 ) // Set means analog mode.
#define INPUT_MODE_3D_PAD_PREVIOUS_MASK ( 1 << 1 ) // Edge trigger helper.
#define INPUT_MODE_MISSION_THROTTLE_LATCH ( 1 << 2 ) // Latch throttle enabled?
#define INPUT_MODE_MISSION_THROTTLE_PREV ( 1 << 3 ) // Edge trigger helper.
#define INPUT_MODE_DEFAULT 0
#define INPUT_MODE_DEFAULT_3D_PAD INPUT_MODE_3D_PAD_ANALOG
// Mode switch for 3D Control Pad (per player)
static uint16_t input_mode[ MAX_CONTROLLERS ] = {0};
static int16_t input_throttle_latch[ 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_WHEEL RETRO_DEVICE_SUBCLASS( RETRO_DEVICE_ANALOG, 1 )
#define RETRO_DEVICE_SS_MISSION RETRO_DEVICE_SUBCLASS( RETRO_DEVICE_ANALOG, 2 )
#define RETRO_DEVICE_SS_MISSION2 RETRO_DEVICE_SUBCLASS( RETRO_DEVICE_ANALOG, 3 )
#define RETRO_DEVICE_SS_MOUSE RETRO_DEVICE_SUBCLASS( RETRO_DEVICE_MOUSE, 0 )
#define RETRO_DEVICE_SS_TWINSTICK RETRO_DEVICE_SUBCLASS( RETRO_DEVICE_ANALOG, 4 )
#define RETRO_DEVICE_SS_GUN_JP RETRO_DEVICE_SUBCLASS( RETRO_DEVICE_LIGHTGUN, 0 )
#define RETRO_DEVICE_SS_GUN_US RETRO_DEVICE_SUBCLASS( RETRO_DEVICE_LIGHTGUN, 1 )
enum { INPUT_DEVICE_TYPES_COUNT = 1 /*none*/ + 9 }; /* <-- 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 },
{ "Mission Stick", RETRO_DEVICE_SS_MISSION },
{ "Mouse", RETRO_DEVICE_SS_MOUSE },
{ "Stunner", RETRO_DEVICE_SS_GUN_US },
{ "Twin-Stick", RETRO_DEVICE_SS_TWINSTICK },
{ "Virtua Gun", RETRO_DEVICE_SS_GUN_JP },
{ "Dual Mission Sticks", RETRO_DEVICE_SS_MISSION2 }, /*"Panzer Dragoon Zwei" only!*/
{ NULL, 0 },
};
static const struct retro_controller_info ports_no_6player[ 1 + 1 + 1 ] =
{
/* port one */
{ input_device_types, INPUT_DEVICE_TYPES_COUNT },
/* port two */
{ input_device_types, INPUT_DEVICE_TYPES_COUNT },
{ 0 },
};
static const struct retro_controller_info ports_left_6player[ 6 + 1 + 1 ] =
{
/* port one */
{ input_device_types, INPUT_DEVICE_TYPES_COUNT },
{ input_device_types, INPUT_DEVICE_TYPES_COUNT },
{ input_device_types, INPUT_DEVICE_TYPES_COUNT },
{ input_device_types, INPUT_DEVICE_TYPES_COUNT },
{ input_device_types, INPUT_DEVICE_TYPES_COUNT },
{ input_device_types, INPUT_DEVICE_TYPES_COUNT },
/* port two: 6player adaptor */
{ input_device_types, INPUT_DEVICE_TYPES_COUNT },
{ 0 },
};
static const struct retro_controller_info ports_right_6player[ 1 + 6 + 1 ] =
{
/* port one */
{ input_device_types, INPUT_DEVICE_TYPES_COUNT },
/* port two: 6player adaptor */
{ input_device_types, INPUT_DEVICE_TYPES_COUNT },
{ input_device_types, INPUT_DEVICE_TYPES_COUNT },
{ input_device_types, INPUT_DEVICE_TYPES_COUNT },
{ input_device_types, INPUT_DEVICE_TYPES_COUNT },
{ input_device_types, INPUT_DEVICE_TYPES_COUNT },
{ input_device_types, INPUT_DEVICE_TYPES_COUNT },
{ 0 },
};
static const struct retro_controller_info ports_two_6player[ 6 + 6 + 1 ] =
{
/* port one: 6player adaptor */
{ input_device_types, INPUT_DEVICE_TYPES_COUNT },
{ input_device_types, INPUT_DEVICE_TYPES_COUNT },
{ input_device_types, INPUT_DEVICE_TYPES_COUNT },
{ input_device_types, INPUT_DEVICE_TYPES_COUNT },
{ input_device_types, INPUT_DEVICE_TYPES_COUNT },
{ input_device_types, INPUT_DEVICE_TYPES_COUNT },
/* port two: 6player adaptor */
{ input_device_types, INPUT_DEVICE_TYPES_COUNT },
{ input_device_types, INPUT_DEVICE_TYPES_COUNT },
{ input_device_types, INPUT_DEVICE_TYPES_COUNT },
{ input_device_types, INPUT_DEVICE_TYPES_COUNT },
{ input_device_types, INPUT_DEVICE_TYPES_COUNT },
{ input_device_types, INPUT_DEVICE_TYPES_COUNT },
{ 0 },
};
/* Lookup table to select ports info for all combinations
of 6player adaptor connection. */
static const struct retro_controller_info* ports_lut[ 4 ] =
{
ports_no_6player,
ports_left_6player,
ports_right_6player,
ports_two_6player
};
//------------------------------------------------------------------------------
// Mapping Helpers
//------------------------------------------------------------------------------
/* Control Pad (default) */
enum { INPUT_MAP_PAD_SIZE = 12 };
static const unsigned input_map_pad[ INPUT_MAP_PAD_SIZE ] =
{
// libretro input at position || maps to Saturn on bit
//-----------------------------------------------------------------------------
RETRO_DEVICE_ID_JOYPAD_L, // L1 -> Z 0
RETRO_DEVICE_ID_JOYPAD_X, // X(top) -> Y 1
RETRO_DEVICE_ID_JOYPAD_Y, // Y(left) -> X 2
RETRO_DEVICE_ID_JOYPAD_R2, // R2 -> R 3
RETRO_DEVICE_ID_JOYPAD_UP, // Pad-Up -> Pad-Up 4
RETRO_DEVICE_ID_JOYPAD_DOWN, // Pad-Down -> Pad-Down 5
RETRO_DEVICE_ID_JOYPAD_LEFT, // Pad-Left -> Pad-Left 6
RETRO_DEVICE_ID_JOYPAD_RIGHT, // Pad-Right -> Pad-Right 7
RETRO_DEVICE_ID_JOYPAD_A, // A(right) -> B 8
RETRO_DEVICE_ID_JOYPAD_R, // R1 -> C 9
RETRO_DEVICE_ID_JOYPAD_B, // B(down) -> A 10
RETRO_DEVICE_ID_JOYPAD_START, // Start -> Start 11
};
static const unsigned input_map_pad_left_shoulder =
RETRO_DEVICE_ID_JOYPAD_L2; // L2 -> L 15
/* 3D Control Pad */
enum { INPUT_MAP_3D_PAD_SIZE = 11 };
static const unsigned input_map_3d_pad[ INPUT_MAP_3D_PAD_SIZE ] =
{
// libretro input at position || maps to Saturn on bit
//-----------------------------------------------------------------------------
RETRO_DEVICE_ID_JOYPAD_UP, // Pad-Up -> Pad-Up 0
RETRO_DEVICE_ID_JOYPAD_DOWN, // Pad-Down -> Pad-Down 1
RETRO_DEVICE_ID_JOYPAD_LEFT, // Pad-Left -> Pad-Left 2
RETRO_DEVICE_ID_JOYPAD_RIGHT, // Pad-Right -> Pad-Right 3
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_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;
/* Mission Stick */
enum { INPUT_MAP_MISSION_SIZE = 8 };
static const unsigned input_map_mission[ INPUT_MAP_MISSION_SIZE ] =
{
// libretro input at position || maps to Saturn on bit
//-----------------------------------------------------------------------------
RETRO_DEVICE_ID_JOYPAD_A, // A(right) -> B 0
RETRO_DEVICE_ID_JOYPAD_R, // R1 -> C 1
RETRO_DEVICE_ID_JOYPAD_B, // B(down) -> A 2
RETRO_DEVICE_ID_JOYPAD_START, // Start -> Start 3
RETRO_DEVICE_ID_JOYPAD_L, // L1 -> Z 4
RETRO_DEVICE_ID_JOYPAD_X, // X(top) -> Y 5
RETRO_DEVICE_ID_JOYPAD_Y, // Y(left) -> X 6
RETRO_DEVICE_ID_JOYPAD_R2, // R2 -> R 7
};
static const unsigned input_map_mission_left_shoulder =
RETRO_DEVICE_ID_JOYPAD_L2; // L2 -> L 15
static const unsigned input_map_mission_throttle_latch = RETRO_DEVICE_ID_JOYPAD_R3;
/* Twin-Stick */
static const unsigned input_map_twinstick_left_trigger = RETRO_DEVICE_ID_JOYPAD_L2;
static const unsigned input_map_twinstick_left_button = RETRO_DEVICE_ID_JOYPAD_L;
static const unsigned input_map_twinstick_right_trigger = RETRO_DEVICE_ID_JOYPAD_R2;
static const unsigned input_map_twinstick_right_button = RETRO_DEVICE_ID_JOYPAD_R;
//------------------------------------------------------------------------------
// Local Functions
//------------------------------------------------------------------------------
static void get_analog_axis( retro_input_state_t input_state_cb,
int player_index,
int stick,
int axis,
int* p_analog )
{
int analog = input_state_cb( player_index, RETRO_DEVICE_ANALOG, stick, axis );
// 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 < -astick_deadzone )
{
// Re-scale analog stick range
float scaled = (-analog - astick_deadzone)*scale;
analog = (int)round(-scaled);
if (analog < -32767)
analog = -32767;
}
else if ( analog > astick_deadzone )
{
// Re-scale analog stick range
float scaled = (analog - astick_deadzone)*scale;
analog = (int)round(scaled);
if (analog > +32767)
analog = +32767;
}
else
analog = 0;
}
// output
*p_analog = analog;
}
static void get_analog_stick( retro_input_state_t input_state_cb,
int player_index,
int stick,
int* p_analog_x,
int* p_analog_y )
{
int analog_x = input_state_cb( player_index, RETRO_DEVICE_ANALOG, stick, RETRO_DEVICE_ID_ANALOG_X );
int analog_y = input_state_cb( player_index, RETRO_DEVICE_ANALOG, stick, RETRO_DEVICE_ID_ANALOG_Y );
// Analog stick deadzone (borrowed code from parallel-n64 core)
if ( astick_deadzone > 0 )
{
static const int ASTICK_MAX = 0x8000;
// Convert cartesian coordinate analog stick to polar coordinates
double radius = sqrt(analog_x * analog_x + analog_y * analog_y);
double angle = atan2(analog_y, analog_x);
if (radius > astick_deadzone)
{
// Re-scale analog stick range to negate deadzone (makes slow movements possible)
radius = (radius - astick_deadzone)*((float)ASTICK_MAX/(ASTICK_MAX - astick_deadzone));
// Convert back to cartesian coordinates
analog_x = (int)round(radius * cos(angle));
analog_y = (int)round(radius * sin(angle));
// Clamp to correct range
if (analog_x > +32767) analog_x = +32767;
if (analog_x < -32767) analog_x = -32767;
if (analog_y > +32767) analog_y = +32767;
if (analog_y < -32767) analog_y = -32767;
}
else
{
analog_x = 0;
analog_y = 0;
}
}
// output
*p_analog_x = analog_x;
*p_analog_y = analog_y;
}
static uint32_t apply_trigger_deadzone( uint32_t input )
{
// Scale by two and apply outer deadzone (about 1%)
input = ( input * 66191 ) / 32768;
// Inner deadzone
if ( trigger_deadzone > 0 )
{
const float scale = ((float)TRIGGER_MAX/(float)(TRIGGER_MAX - trigger_deadzone));
if ( input > trigger_deadzone )
{
// Re-scale analog range
float scaled = (input - trigger_deadzone)*scale;
input = (int)round(scaled);
}
else
input = 0;
}
// Clamp
if (input > TRIGGER_MAX)
input = TRIGGER_MAX;
return input;
}
static uint16_t get_analog_trigger( retro_input_state_t input_state_cb,
int player_index,
int id )
{
// NOTE: Analog triggers were added Nov 2017. Not all front-ends support this
// feature (or pre-date it) so we need to handle this in a graceful way.
// First, try and get an analog value using the new libretro API constant
uint16_t trigger = input_state_cb( player_index,
RETRO_DEVICE_ANALOG,
RETRO_DEVICE_INDEX_ANALOG_BUTTON,
id );
if ( trigger == 0 )
{
// If we got exactly zero, we're either not pressing the button, or the front-end
// is not reporting analog values. We need to do a second check using the classic
// digital API method, to at least get some response - better than nothing.
// NOTE: If we're really just not holding the trigger, we're still going to get zero.
if (input_state_cb( player_index,
RETRO_DEVICE_JOYPAD,
0,
id ))
return 0xFFFF;
return 0;
}
// We got something, which means the front-end can handle analog buttons.
// So we apply a deadzone to the input and use it.
// Mednafen wants 0 - 65535 so we scale up from 0 - 32767
return apply_trigger_deadzone( (unsigned)trigger );
}
//------------------------------------------------------------------------------
// Global Functions
//------------------------------------------------------------------------------
void input_init_env( retro_environment_t _environ_cb )
{
// Cache this
environ_cb = _environ_cb;
#define RETRO_DESCRIPTOR_BLOCK( _user ) \
{ _user, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" }, \
{ _user, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" }, \
{ _user, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" }, \
{ _user, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" }, \
{ _user, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "A Button" }, \
{ _user, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "B Button" }, \
{ _user, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R, "C Button" }, \
{ _user, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "X Button" }, \
{ _user, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "Y Button" }, \
{ _user, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L, "Z Button" }, \
{ _user, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L2, "L Button" }, \
{ _user, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R2, "R Button" }, \
{ _user, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start Button" }, \
{ _user, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT, "Mode Switch" }, \
{ _user, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_LEFT, RETRO_DEVICE_ID_ANALOG_X, "Analog X" }, \
{ _user, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_LEFT, RETRO_DEVICE_ID_ANALOG_Y, "Analog Y" }, \
{ _user, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_RIGHT, RETRO_DEVICE_ID_ANALOG_X, "Analog X (Right)" }, \
{ _user, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_RIGHT, RETRO_DEVICE_ID_ANALOG_Y, "Analog Y (Right)" }, \
{ _user, RETRO_DEVICE_LIGHTGUN, 0, RETRO_DEVICE_ID_LIGHTGUN_TRIGGER, "Gun Trigger" }, \
{ _user, RETRO_DEVICE_LIGHTGUN, 0, RETRO_DEVICE_ID_LIGHTGUN_START, "Gun Start" }, \
{ _user, RETRO_DEVICE_LIGHTGUN, 0, RETRO_DEVICE_ID_LIGHTGUN_RELOAD, "Gun Reload" }
struct retro_input_descriptor desc[] =
{
RETRO_DESCRIPTOR_BLOCK( 0 ),
RETRO_DESCRIPTOR_BLOCK( 1 ),
RETRO_DESCRIPTOR_BLOCK( 2 ),
RETRO_DESCRIPTOR_BLOCK( 3 ),
RETRO_DESCRIPTOR_BLOCK( 4 ),
RETRO_DESCRIPTOR_BLOCK( 5 ),
RETRO_DESCRIPTOR_BLOCK( 6 ),
RETRO_DESCRIPTOR_BLOCK( 7 ),
RETRO_DESCRIPTOR_BLOCK( 8 ),
RETRO_DESCRIPTOR_BLOCK( 9 ),
RETRO_DESCRIPTOR_BLOCK( 10 ),
RETRO_DESCRIPTOR_BLOCK( 11 ),
{ 0 },
};
#undef RETRO_DESCRIPTOR_BLOCK
/* Send to front-end */
environ_cb( RETRO_ENVIRONMENT_SET_INPUT_DESCRIPTORS, desc );
}
void input_set_env( retro_environment_t environ_cb )
{
/* Pick ports selection */
const struct retro_controller_info* ports = ports_lut[ setting_multitap_port1 + setting_multitap_port2 * 2 ];
/* Send to front-end */
environ_cb( RETRO_ENVIRONMENT_SET_CONTROLLER_INFO, (void*)ports );
}
void input_init(void)
{
// Initialise to default pad type and bind input buffers to SMPC emulation.
for ( unsigned i = 0; i < MAX_CONTROLLERS; ++i )
{
input_type[ i ] = RETRO_DEVICE_JOYPAD;
input_mode[ i ] = INPUT_MODE_DEFAULT;
input_throttle_latch[ i ] = 0;
SMPC_SetInput( i, "gamepad", (uint8*)&input_data[ i ] );
}
}
void input_set_geometry(unsigned width, unsigned height)
{
log_cb(RETRO_LOG_INFO, "%s: %dx%d\n", __func__, width, height);
geometry_width = width;
geometry_height = height;
}
void input_set_deadzone_stick( int percent )
{
if ( percent >= 0 && percent <= 100 )
astick_deadzone = (int)( percent * 0.01f * 0x8000);
}
void input_set_deadzone_trigger( int percent )
{
if ( percent >= 0 && percent <= 100 )
trigger_deadzone = (int)( percent * 0.01f * TRIGGER_MAX);
}
void input_set_mouse_sensitivity( int percent )
{
if ( percent > 0 && percent <= 200 )
mouse_sensitivity = (float)percent / 100.0f;
}
void input_update_with_bitmasks( retro_input_state_t input_state_cb )
{
// For each player (logical controller)
for ( unsigned iplayer = 0; iplayer < players; ++iplayer )
{
INPUT_DATA* p_input = &(input_data[ iplayer ]);
int16_t ret = input_state_cb( iplayer, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_MASK );
// reset input
p_input->buttons = 0;
// What kind of controller is connected?
switch ( input_type[ iplayer ] )
{
case RETRO_DEVICE_JOYPAD:
case RETRO_DEVICE_SS_PAD:
//
// -- standard control pad buttons + d-pad
// input_map_pad is configured to quickly map libretro buttons to the correct bits for the Saturn.
for ( int i = 0; i < INPUT_MAP_PAD_SIZE; ++i )
{
if (ret & (1 << input_map_pad[ i ]))
p_input->buttons |= ( 1 << i );
}
// .. the left trigger on the Saturn is a special case since there's a gap in the bits.
if (ret & (1 << RETRO_DEVICE_ID_JOYPAD_L2))
p_input->buttons |= ( 1 << 15 );
if (!opposite_directions)
{
if ((p_input->buttons & 0x30) == 0x30)
p_input->buttons &= ~0x30;
if ((p_input->buttons & 0xC0) == 0xC0)
p_input->buttons &= ~0xC0;
}
break;
case RETRO_DEVICE_SS_TWINSTICK:
{
int analog_lx, analog_ly;
int analog_rx, analog_ry;
get_analog_stick( input_state_cb, iplayer, RETRO_DEVICE_INDEX_ANALOG_LEFT, &analog_lx, &analog_ly );
get_analog_stick( input_state_cb, iplayer, RETRO_DEVICE_INDEX_ANALOG_RIGHT, &analog_rx, &analog_ry );
const int thresh = 16000;
// left-stick
if ( analog_ly <= -thresh )
p_input->buttons |= ( 1 << 4 ); // Up
if ( analog_lx >= thresh )
p_input->buttons |= ( 1 << 7 ); // Right
if ( analog_ly >= thresh )
p_input->buttons |= ( 1 << 5 ); // Down
if ( analog_lx <= -thresh )
p_input->buttons |= ( 1 << 6 ); // Left
// right-stick
if ( analog_ry <= -thresh )
p_input->buttons |= ( 1 << 1 ); // Up <-(Y)
if ( analog_rx >= thresh )
p_input->buttons |= ( 1 << 0 ); // Right <-(Z)
if ( analog_ry >= thresh )
p_input->buttons |= ( 1 << 8 ); // Down <-(B)
if ( analog_rx <= -thresh )
p_input->buttons |= ( 1 << 2 ); // Left <-(X)
// left trigger
if (ret & (1 << input_map_twinstick_left_trigger))
p_input->buttons |= (1 << 15);
// left button
if (ret & (1 << input_map_twinstick_left_button))
p_input->buttons |= ( 1 << 3 );
// right trigger
if (ret & (1 << input_map_twinstick_right_trigger))
p_input->buttons |= ( 1 << 10 );
// right button
if (ret & (1 << input_map_twinstick_right_button))
p_input->buttons |= ( 1 << 9 );
// start
if (ret & (1 << RETRO_DEVICE_ID_JOYPAD_START))
p_input->buttons |= ( 1 << 11 );
}
break;
case RETRO_DEVICE_SS_3D_PAD:
{
//
// -- 3d control pad buttons
// input_map_3d_pad is configured to quickly map libretro buttons to the correct bits for the Saturn.
for ( int i = 0; i < INPUT_MAP_3D_PAD_SIZE; ++i )
if (ret & (1 << input_map_3d_pad[ i ]))
p_input->buttons |= ( 1 << i );
//
// -- analog stick
int analog_x, analog_y;
get_analog_stick( input_state_cb, iplayer, RETRO_DEVICE_INDEX_ANALOG_LEFT, &analog_x, &analog_y );
// mednafen wants 0 - 32767 - 65535
uint16_t thumb_x = static_cast< uint16_t >( analog_x + 32767 );
uint16_t thumb_y = static_cast< uint16_t >( analog_y + 32767 );
//
// -- triggers
// mednafen wants 0 - 65535
uint16_t l_trigger = get_analog_trigger( input_state_cb, iplayer, RETRO_DEVICE_ID_JOYPAD_L2 );
uint16_t r_trigger = get_analog_trigger( input_state_cb, iplayer, RETRO_DEVICE_ID_JOYPAD_R2 );
//
// -- mode switch
{
// Handle MODE button as a switch
uint16_t prev = ( input_mode[iplayer] & INPUT_MODE_3D_PAD_PREVIOUS_MASK );
uint16_t held = 0;
if (ret & (1 << input_map_3d_pad_mode_switch))
held = INPUT_MODE_3D_PAD_PREVIOUS_MASK;
// Rising edge trigger
if ( !prev && held )
{
char text[ 256 ];
// Toggle 'state' bit: analog/digital mode
input_mode[ iplayer ] ^= INPUT_MODE_3D_PAD_ANALOG;
// Tell user
if ( input_mode[iplayer] & INPUT_MODE_3D_PAD_ANALOG )
sprintf( text, "Controller %u: Analog Mode", (iplayer+1) );
else
sprintf( text, "Controller %u: Digital Mode", (iplayer+1) );
struct retro_message msg = { text, 180 };
environ_cb( RETRO_ENVIRONMENT_SET_MESSAGE, &msg );
}
// Store held state in 'previous' bit.
input_mode[ iplayer ] = ( input_mode[ iplayer ] & ~INPUT_MODE_3D_PAD_PREVIOUS_MASK ) | held;
}
//
// -- format input data
// Apply analog/digital mode switch bit.
if ( input_mode[iplayer] & INPUT_MODE_3D_PAD_ANALOG )
p_input->buttons |= 0x1000; // set bit 12
p_input->u8[0x2] = ((thumb_x >> 0) & 0xff);
p_input->u8[0x3] = ((thumb_x >> 8) & 0xff);
p_input->u8[0x4] = ((thumb_y >> 0) & 0xff);
p_input->u8[0x5] = ((thumb_y >> 8) & 0xff);
p_input->u8[0x6] = ((r_trigger >> 0) & 0xff);
p_input->u8[0x7] = ((r_trigger >> 8) & 0xff);
p_input->u8[0x8] = ((l_trigger >> 0) & 0xff);
p_input->u8[0x9] = ((l_trigger >> 8) & 0xff);
}
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 ) );
if (ret & (1 << input_map_wheel[ i ]))
p_input->buttons |= bit;
}
// shift-paddles
if (ret & (1 << input_map_wheel_shift_left))
p_input->buttons |= ( 1 << 0 );
if (ret & (1 << input_map_wheel_shift_right))
p_input->buttons |= ( 1 << 1 );
//
// -- analog wheel
int analog_x;
get_analog_axis( input_state_cb, iplayer,
RETRO_DEVICE_INDEX_ANALOG_LEFT,
RETRO_DEVICE_ID_ANALOG_X, &analog_x );
//
// -- 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;
case RETRO_DEVICE_SS_MOUSE:
{
// mouse buttons
p_input->u8[0x4] = 0;
if ( input_state_cb( iplayer, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_LEFT ) )
p_input->u8[0x4] |= ( 1 << 0 ); // A
if ( input_state_cb( iplayer, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_RIGHT ) )
p_input->u8[0x4] |= ( 1 << 1 ); // B
if ( input_state_cb( iplayer, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_MIDDLE ) )
p_input->u8[0x4] |= ( 1 << 2 ); // C
if ( input_state_cb( iplayer, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START ) ||
input_state_cb( iplayer, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_BUTTON_4 ) ||
input_state_cb( iplayer, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_BUTTON_5 ) ) {
p_input->u8[0x4] |= ( 1 << 3 ); // Start
}
// mouse input
int dx_raw = input_state_cb( iplayer, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_X );
int dy_raw = input_state_cb( iplayer, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_Y );
int16_t *delta = (int16_t*)p_input;
delta[ 0 ] = (int16_t)roundf( dx_raw * mouse_sensitivity );
delta[ 1 ] = (int16_t)roundf( dy_raw * mouse_sensitivity );
}
break;
case RETRO_DEVICE_SS_MISSION:
{
//
// -- mission stick buttons
// input_map_mission is configured to quickly map libretro buttons to the correct bits for the Saturn.
for ( int i = 0; i < INPUT_MAP_MISSION_SIZE; ++i )
if (ret & (1 << input_map_mission[ i ]))
p_input->buttons |= ( 1 << i );
// .. the left trigger is a special case, there's a gap in the bits.
if (ret & (1 << input_map_mission_left_shoulder))
p_input->buttons |= ( 1 << 11 );
//
// -- analog stick
int analog_x, analog_y;
get_analog_stick( input_state_cb, iplayer, RETRO_DEVICE_INDEX_ANALOG_LEFT, &analog_x, &analog_y );
//
// -- throttle
int throttle_real;
get_analog_axis( input_state_cb, iplayer,
RETRO_DEVICE_INDEX_ANALOG_RIGHT,
RETRO_DEVICE_ID_ANALOG_Y, &throttle_real );
int16_t throttle;
if ( input_mode[iplayer] & INPUT_MODE_MISSION_THROTTLE_LATCH ) // Use latched value
throttle = input_throttle_latch[iplayer];
else // Direct read
throttle = throttle_real;
//
// -- throttle latch switch
{
// Handle MODE button as a switch
uint16_t prev = ( input_mode[iplayer] & INPUT_MODE_MISSION_THROTTLE_PREV );
uint16_t held = 0;
if (ret & (1 << input_map_mission_throttle_latch))
held = INPUT_MODE_MISSION_THROTTLE_PREV;
// Rising edge trigger?
if ( !prev && held )
{
// Toggle 'state' bit: throttle latch enable/disable.
input_mode[ iplayer ] ^= INPUT_MODE_MISSION_THROTTLE_LATCH;
// Tell user
if ( input_mode[iplayer] & INPUT_MODE_MISSION_THROTTLE_LATCH )
input_throttle_latch[iplayer] = (int16_t)throttle_real;
}
// Store held state in 'previous' bit.
input_mode[ iplayer ] = ( input_mode[ iplayer ] & ~INPUT_MODE_MISSION_THROTTLE_PREV ) | held;
}
//
// -- 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;
uint16_t down = analog_y > 0 ? analog_y : 0;
uint16_t up = analog_y < 0 ? -analog_y : 0;
uint16_t th_up = throttle > 0 ? throttle : 0;
uint16_t th_dn = throttle < 0 ? -throttle : 0;
p_input->u8[0x2] = 0; // todo: auto-fire controls.
p_input->u8[0x3] = ((left >> 0) & 0xff);
p_input->u8[0x4] = ((left >> 8) & 0xff);
p_input->u8[0x5] = ((right >> 0) & 0xff);
p_input->u8[0x6] = ((right >> 8) & 0xff);
p_input->u8[0x7] = ((up >> 0) & 0xff);
p_input->u8[0x8] = ((up >> 8) & 0xff);
p_input->u8[0x9] = ((down >> 0) & 0xff);
p_input->u8[0xa] = ((down >> 8) & 0xff);
p_input->u8[0xb] = ((th_up >> 0) & 0xff);
p_input->u8[0xc] = ((th_up >> 8) & 0xff);
p_input->u8[0xd] = ((th_dn >> 0) & 0xff);
p_input->u8[0xe] = ((th_dn >> 8) & 0xff);
}
break;
case RETRO_DEVICE_SS_MISSION2:
{
//
// -- mission stick buttons
// input_map_mission is configured to quickly map libretro buttons to the correct bits for the Saturn.
for ( int i = 0; i < INPUT_MAP_MISSION_SIZE; ++i )
{
if (ret & (1 << input_map_mission[ i ]))
p_input->buttons |= ( 1 << i );
}
// .. the left trigger is a special case, there's a gap in the bits.
if (ret & (1 << input_map_mission_left_shoulder))
p_input->buttons |= ( 1 << 11 );
//
// -- analog sticks
int analog1_x, analog1_y;
int analog2_x, analog2_y;
// Default - patent shows first stick on right side, second added on left
// see: https://segaretro.org/images/a/a1/Patent_EP0745928A2.pdf
get_analog_stick( input_state_cb, iplayer, RETRO_DEVICE_INDEX_ANALOG_RIGHT, &analog1_x, &analog1_y );
get_analog_stick( input_state_cb, iplayer, RETRO_DEVICE_INDEX_ANALOG_LEFT, &analog2_x, &analog2_y );
//
// -- format input data
// Convert analog values into direction values.
uint16_t right1 = analog1_x > 0 ? analog1_x : 0;
uint16_t left1 = analog1_x < 0 ? -analog1_x : 0;
uint16_t down1 = analog1_y > 0 ? analog1_y : 0;
uint16_t up1 = analog1_y < 0 ? -analog1_y : 0;
uint16_t right2 = analog2_x > 0 ? analog2_x : 0;
uint16_t left2 = analog2_x < 0 ? -analog2_x : 0;
uint16_t down2 = analog2_y > 0 ? analog2_y : 0;
uint16_t up2 = analog2_y < 0 ? -analog2_y : 0;
p_input->u8[ 0x2] = 0; // todo: auto-fire controls.
p_input->u8[ 0x3] = ((left1 >> 0) & 0xff);
p_input->u8[ 0x4] = ((left1 >> 8) & 0xff);
p_input->u8[ 0x5] = ((right1 >> 0) & 0xff);
p_input->u8[ 0x6] = ((right1 >> 8) & 0xff);
p_input->u8[ 0x7] = ((up1 >> 0) & 0xff);
p_input->u8[ 0x8] = ((up1 >> 8) & 0xff);
p_input->u8[ 0x9] = ((down1 >> 0) & 0xff);
p_input->u8[ 0xa] = ((down1 >> 8) & 0xff);
p_input->u8[ 0xb] = 0; // todo: throttle1
p_input->u8[ 0xc] = 0;
p_input->u8[ 0xd] = 0;
p_input->u8[ 0xe] = 0;
p_input->u8[ 0xf] = ((left2 >> 0) & 0xff);
p_input->u8[0x10] = ((left2 >> 8) & 0xff);
p_input->u8[0x11] = ((right2 >> 0) & 0xff);
p_input->u8[0x12] = ((right2 >> 8) & 0xff);
p_input->u8[0x13] = ((up2 >> 0) & 0xff);
p_input->u8[0x14] = ((up2 >> 8) & 0xff);
p_input->u8[0x15] = ((down2 >> 0) & 0xff);
p_input->u8[0x16] = ((down2 >> 8) & 0xff);
p_input->u8[0x17] = 0; // todo: throttle2
p_input->u8[0x18] = 0;
p_input->u8[0x19] = 0;
p_input->u8[0x1a] = 0;
}
break;
case RETRO_DEVICE_SS_GUN_JP:
case RETRO_DEVICE_SS_GUN_US:
{
if ( setting_gun_input == SETTING_GUN_INPUT_POINTER )
{
int gun_x_raw = input_state_cb( iplayer, RETRO_DEVICE_POINTER, 0, RETRO_DEVICE_ID_POINTER_X);
int gun_y_raw = input_state_cb( iplayer, RETRO_DEVICE_POINTER, 0, RETRO_DEVICE_ID_POINTER_Y);
// .. scale into screen space:
// NOTE: the scaling here is empirical-guesswork.
// Tested at 352x240 (ntsc) and 352x256 (pal)
const int scale_x = 21472;
const int scale_y = geometry_height;
const int offset_y = geometry_height - 240;
int is_offscreen = 0;
int gun_x = ( ( gun_x_raw + 0x7fff ) * scale_x ) / (0x7fff << 1);
int gun_y = ( ( gun_y_raw + 0x7fff ) * scale_y ) / (0x7fff << 1) + offset_y;
// Handle offscreen by checking corrected x and y values
if ( gun_x == 0 || gun_y == 0 )
{
is_offscreen = 1;
gun_x = -16384; // magic position to disable cross-hair drawing.
gun_y = -16384;
}
// Touch sensitivity: Keep the gun position held for a fixed number of cycles after touch is released
// because a very light touch can result in a misfire
if ( pointer_cycles_after_released > 0 && pointer_cycles_after_released < POINTER_PRESSED_CYCLES ) {
pointer_cycles_after_released++;
p_input->gun_pos[ 0 ] = pointer_pressed_last_x;
p_input->gun_pos[ 1 ] = pointer_pressed_last_y;
return;
}
// trigger
if ( input_state_cb( iplayer, RETRO_DEVICE_POINTER, 0, RETRO_DEVICE_ID_POINTER_PRESSED ) )
{
pointer_pressed = 1;
pointer_cycles_after_released = 0;
pointer_pressed_last_x = gun_x;
pointer_pressed_last_y = gun_y;
} else if ( pointer_pressed ) {
pointer_cycles_after_released++;
pointer_pressed = 0;
p_input->gun_pos[ 0 ] = pointer_pressed_last_x;
p_input->gun_pos[ 1 ] = pointer_pressed_last_y;
p_input->u8[4] &= ~0x1;
return;
}
// position
p_input->gun_pos[ 0 ] = gun_x;
p_input->gun_pos[ 1 ] = gun_y;
// buttons
p_input->u8[ 4 ] = 0;
// use multi-touch to support different button inputs:
// 3-finger touch: START button
// 2-finger touch: Reload
// offscreen touch: Reload
int touch_count = input_state_cb( iplayer, RETRO_DEVICE_POINTER, 0, RETRO_DEVICE_ID_POINTER_COUNT );
if ( touch_count == 3 )
p_input->u8[ 4 ] |= 0x2;
else if ( touch_count == 2 )
p_input->u8[ 4 ] |= 0x4;
else if ( touch_count == 1 && is_offscreen )
p_input->u8[ 4 ] |= 0x4;
else if ( touch_count == 1 )
p_input->u8[ 4 ] |= 0x1;
} else { // Lightgun input is default
uint8_t shot_type;