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vcs_ctrl/paddles: Swap ports and button bits at runtime. Avoids multiple input defs per-device. [Ryan Holtz] (#10825)

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MooglyGuy 2023-01-11 17:56:22 +01:00 committed by GitHub
parent 1b43a3e093
commit 0b06edd19d
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1 changed files with 5 additions and 21 deletions
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26
src/devices/bus/vcs_ctrl/paddles.cpp
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@ -31,30 +31,13 @@ static INPUT_PORTS_START( vcs_paddles )
PORT_BIT( 0xff, 0x80, IPT_PADDLE) PORT_PLAYER(2) PORT_SENSITIVITY(30) PORT_KEYDELTA(20) PORT_MINMAX(0, 255) PORT_REVERSE // pin 9
INPUT_PORTS_END
static INPUT_PORTS_START( vcs_paddles_reversed )
PORT_START("JOY")
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(1) // pin 3
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(2) // pin 4
PORT_BIT( 0xf3, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_START("POTX")
PORT_BIT( 0xff, 0x80, IPT_PADDLE) PORT_PLAYER(2) PORT_SENSITIVITY(30) PORT_KEYDELTA(20) PORT_MINMAX(0, 255) PORT_REVERSE // pin 5
PORT_START("POTY")
PORT_BIT( 0xff, 0x80, IPT_PADDLE) PORT_PLAYER(1) PORT_SENSITIVITY(30) PORT_KEYDELTA(20) PORT_MINMAX(0, 255) PORT_REVERSE // pin 9
INPUT_PORTS_END
//-------------------------------------------------
// input_ports - device-specific input ports
//-------------------------------------------------
ioport_constructor vcs_paddles_device::device_input_ports() const
{
if (m_reverse_players)
return INPUT_PORTS_NAME( vcs_paddles_reversed );
else
return INPUT_PORTS_NAME( vcs_paddles );
return INPUT_PORTS_NAME( vcs_paddles );
}
@ -93,7 +76,8 @@ void vcs_paddles_device::device_start()
uint8_t vcs_paddles_device::vcs_joy_r()
{
return m_joy->read();
uint8_t const data = m_joy->read();
return m_reverse_players ? bitswap<8>(data, 7, 6, 5, 4, 2, 3, 1, 0) : data;
}
@ -103,7 +87,7 @@ uint8_t vcs_paddles_device::vcs_joy_r()
uint8_t vcs_paddles_device::vcs_pot_x_r()
{
return m_potx->read();
return m_reverse_players ? m_poty->read() : m_potx->read();
}
@ -113,5 +97,5 @@ uint8_t vcs_paddles_device::vcs_pot_x_r()
uint8_t vcs_paddles_device::vcs_pot_y_r()
{
return m_poty->read();
return m_reverse_players ? m_potx->read() : m_poty->read();
}