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/**********************************************************************

    Atari Video Computer System analog paddles emulation

    Copyright MESS Team.
    Visit http://mamedev.org for licensing and usage restrictions.

**********************************************************************/

#include "vcs_paddles.h"



//**************************************************************************
//  DEVICE DEFINITIONS
//**************************************************************************

const device_type VCS_PADDLES = &device_creator<vcs_paddles_device>;


static INPUT_PORTS_START( vcs_paddles )
	PORT_START("JOY")
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(1)
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(2)
	PORT_BIT( 0xf3, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START("POTX")
	PORT_BIT( 0xff, 0x80, IPT_PADDLE) PORT_PLAYER(1) PORT_SENSITIVITY(30) PORT_KEYDELTA(20) PORT_MINMAX(0, 255)

	PORT_START("POTY")
	PORT_BIT( 0xff, 0x80, IPT_PADDLE) PORT_PLAYER(2) PORT_SENSITIVITY(30) PORT_KEYDELTA(20) PORT_MINMAX(0, 255)
INPUT_PORTS_END


//-------------------------------------------------
//  input_ports - device-specific input ports
//-------------------------------------------------

ioport_constructor vcs_paddles_device::device_input_ports() const
{
	return INPUT_PORTS_NAME( vcs_paddles );
}



//**************************************************************************
//  LIVE DEVICE
//**************************************************************************

//-------------------------------------------------
//  vcs_paddles_device - constructor
//-------------------------------------------------

vcs_paddles_device::vcs_paddles_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) :
	device_t(mconfig, VCS_PADDLES, "Digital paddles", tag, owner, clock),
	device_vcs_control_port_interface(mconfig, *this)
{
}


//-------------------------------------------------
//  device_start - device-specific startup
//-------------------------------------------------

void vcs_paddles_device::device_start()
{
}


//-------------------------------------------------
//  vcs_joy_r - joystick read
//-------------------------------------------------

UINT8 vcs_paddles_device::vcs_joy_r()
{
	return ioport("JOY")->read();
}


//-------------------------------------------------
//  vcs_pot_x_r - potentiometer X read
//-------------------------------------------------

UINT8 vcs_paddles_device::vcs_pot_x_r()
{
	return ioport("POTX")->read();
}


//-------------------------------------------------
//  vcs_pot_y_r - potentiometer Y read
//-------------------------------------------------

UINT8 vcs_paddles_device::vcs_pot_y_r()
{
	return ioport("POTY")->read();
}