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-rw-r--r--scripts/src/bus.lua2
-rw-r--r--src/devices/bus/a2gameio/brightpen.cpp140
-rw-r--r--src/devices/bus/a2gameio/brightpen.h18
-rw-r--r--src/devices/bus/a2gameio/gameio.cpp7
-rw-r--r--src/devices/bus/a2gameio/gameio.h12
-rw-r--r--src/mame/apple/apple2.cpp2
6 files changed, 179 insertions, 2 deletions
diff --git a/scripts/src/bus.lua b/scripts/src/bus.lua
index 2b94b22976c..8096a161189 100644
--- a/scripts/src/bus.lua
+++ b/scripts/src/bus.lua
@@ -3141,6 +3141,8 @@ end
if (BUSES["A2GAMEIO"]~=null) then
files {
+ MAME_DIR .. "src/devices/bus/a2gameio/brightpen.cpp",
+ MAME_DIR .. "src/devices/bus/a2gameio/brightpen.h",
MAME_DIR .. "src/devices/bus/a2gameio/computereyes.cpp",
MAME_DIR .. "src/devices/bus/a2gameio/computereyes.h",
MAME_DIR .. "src/devices/bus/a2gameio/gameio.cpp",
diff --git a/src/devices/bus/a2gameio/brightpen.cpp b/src/devices/bus/a2gameio/brightpen.cpp
new file mode 100644
index 00000000000..6429b16b5f2
--- /dev/null
+++ b/src/devices/bus/a2gameio/brightpen.cpp
@@ -0,0 +1,140 @@
+// license:BSD-3-Clause
+// copyright-holders:kmg
+/*********************************************************************
+
+ Apple II Softape Bright Pen interface for the Apple ][/][+
+
+*********************************************************************/
+
+#include "emu.h"
+#include "bus/a2gameio/brightpen.h"
+#include "screen.h"
+
+
+namespace {
+
+#define BRIGHTPEN_POINT "BRIGHTPEN_POINT"
+#define BRIGHTPEN_X "BRIGHTPEN_X"
+#define BRIGHTPEN_Y "BRIGHTPEN_Y"
+
+// ======================> apple2_brightpen_device
+
+class apple2_brightpen_device : public device_t, public device_a2gameio_interface
+{
+public:
+ // construction/destruction
+ apple2_brightpen_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock)
+ : device_t(mconfig, APPLE2_BRIGHTPEN, tag, owner, clock)
+ , device_a2gameio_interface(mconfig, *this)
+ , m_brightpen_point(*this, BRIGHTPEN_POINT)
+ , m_brightpen_x(*this, BRIGHTPEN_X)
+ , m_brightpen_y(*this, BRIGHTPEN_Y)
+ {
+ }
+
+protected:
+ // device_t implementation
+ virtual ioport_constructor device_input_ports() const override;
+ virtual void device_start() override;
+
+ // device_a2gameio_interface implementation
+ virtual int sw0_r() override;
+
+private:
+ // input ports
+ required_ioport m_brightpen_point;
+ required_ioport m_brightpen_x;
+ required_ioport m_brightpen_y;
+
+ // radius of circle picked up by the bright pen
+ static constexpr int PEN_X_RADIUS = 2;
+ static constexpr int PEN_Y_RADIUS = 1;
+ // brightness threshold
+ static constexpr int BRIGHTNESS_THRESHOLD = 0x20;
+ // # of CRT scanlines that sustain brightness
+ static constexpr int SUSTAIN = 22;
+};
+
+//**************************************************************************
+// INPUT PORTS
+//**************************************************************************
+
+static INPUT_PORTS_START( apple2_brightpen )
+ PORT_START(BRIGHTPEN_X)
+ PORT_BIT( 0x3ff, 0x80, IPT_LIGHTGUN_X ) PORT_CROSSHAIR(X, 1.0, 0.0, 0) PORT_SENSITIVITY(45) PORT_KEYDELTA(15) PORT_MINMAX(0, 559) PORT_NAME("Bright Pen X")
+ PORT_START(BRIGHTPEN_Y)
+ PORT_BIT( 0x3ff, 0x80, IPT_LIGHTGUN_Y ) PORT_CROSSHAIR(Y, 1.0, 0.0, 0) PORT_SENSITIVITY(45) PORT_KEYDELTA(15) PORT_MINMAX(0, 191) PORT_NAME("Bright Pen Y")
+ PORT_START(BRIGHTPEN_POINT)
+ PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_BUTTON1 ) PORT_NAME("Bright Pen pointed at screen")
+ PORT_BIT( 0xfe, IP_ACTIVE_LOW, IPT_UNUSED )
+INPUT_PORTS_END
+
+ioport_constructor apple2_brightpen_device::device_input_ports() const
+{
+ return INPUT_PORTS_NAME(apple2_brightpen);
+}
+
+void apple2_brightpen_device::device_start()
+{
+}
+
+// light detection logic based on zapper_sensor.cpp nes_zapper_sensor_device::detect_light
+
+int apple2_brightpen_device::sw0_r()
+{
+ if (!BIT(m_brightpen_point->read(), 0)) return 0;
+
+ int pen_x_pos = m_brightpen_x->read();
+ int pen_y_pos = m_brightpen_y->read();
+ int beam_vpos = m_screen->vpos();
+ int beam_hpos = m_screen->hpos();
+
+ // update the screen if the beam position is within the radius of the pen
+ if (!machine().side_effects_disabled())
+ {
+ if (!m_screen->vblank())
+ {
+ if (beam_vpos > pen_y_pos - PEN_Y_RADIUS || (beam_vpos == pen_y_pos - PEN_Y_RADIUS && beam_hpos >= pen_x_pos - PEN_X_RADIUS))
+ {
+ m_screen->update_now();
+ }
+ }
+ }
+
+ int brightness_sum = 0;
+ int pixels_scanned = 0;
+
+ // sum brightness of pixels nearby the pen position
+ for (int i = pen_x_pos - PEN_X_RADIUS; i <= pen_x_pos + PEN_X_RADIUS; i++)
+ {
+ for (int j = pen_y_pos - PEN_Y_RADIUS; j <= pen_y_pos + PEN_Y_RADIUS; j++)
+ {
+ // look at pixels within circular sensor
+ if ((pen_x_pos - i) * (pen_x_pos - i) + (pen_y_pos - j) * (pen_y_pos - j) <= PEN_X_RADIUS * PEN_Y_RADIUS)
+ {
+ rgb_t pix = m_screen->pixel(i, j);
+
+ // only detect light if pen position is near, and behind,
+ // where the video generator is drawing on the CRT,
+ if (j <= beam_vpos && j > beam_vpos - SUSTAIN && (j != beam_vpos || i <= beam_hpos))
+ {
+ brightness_sum += pix.r() + pix.g() + pix.b();
+ }
+ pixels_scanned++;
+ }
+ }
+ }
+
+ // light detected if average brightness is above threshold
+ return (brightness_sum >= BRIGHTNESS_THRESHOLD * pixels_scanned);
+}
+
+} // anonymous namespace
+
+
+//**************************************************************************
+// GLOBAL VARIABLES
+//**************************************************************************
+
+// device type definition
+DEFINE_DEVICE_TYPE_PRIVATE(APPLE2_BRIGHTPEN, device_a2gameio_interface, apple2_brightpen_device, "a2brightpen", "Softape Bright Pen")
diff --git a/src/devices/bus/a2gameio/brightpen.h b/src/devices/bus/a2gameio/brightpen.h
new file mode 100644
index 00000000000..9c47c3d47d4
--- /dev/null
+++ b/src/devices/bus/a2gameio/brightpen.h
@@ -0,0 +1,18 @@
+// license:BSD-3-Clause
+/*********************************************************************
+
+ Apple II Softape Bright Pen interface for a lightpen
+
+*********************************************************************/
+
+#ifndef MAME_BUS_A2GAMEIO_BRIGHTPEN_H
+#define MAME_BUS_A2GAMEIO_BRIGHTPEN_H
+
+#pragma once
+
+#include "bus/a2gameio/gameio.h"
+
+// device type declaration
+DECLARE_DEVICE_TYPE(APPLE2_BRIGHTPEN, device_a2gameio_interface)
+
+#endif // MAME_BUS_A2GAMEIO_BRIGHTPEN_H
diff --git a/src/devices/bus/a2gameio/gameio.cpp b/src/devices/bus/a2gameio/gameio.cpp
index e0eb1405530..fa1f1accf71 100644
--- a/src/devices/bus/a2gameio/gameio.cpp
+++ b/src/devices/bus/a2gameio/gameio.cpp
@@ -50,6 +50,7 @@
#include "emu.h"
#include "bus/a2gameio/gameio.h"
+#include "bus/a2gameio/brightpen.h"
#include "bus/a2gameio/joystick.h"
#include "bus/a2gameio/joyport.h"
#include "bus/a2gameio/joyport_paddles.h"
@@ -68,6 +69,7 @@ DEFINE_DEVICE_TYPE(APPLE2_GAMEIO, apple2_gameio_device, "a2gameio", "Apple II Ga
apple2_gameio_device::apple2_gameio_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock)
: device_t(mconfig, APPLE2_GAMEIO, tag, owner, clock)
, device_single_card_slot_interface<device_a2gameio_interface>(mconfig, *this)
+ , m_screen(*this, finder_base::DUMMY_TAG)
, m_intf(nullptr)
, m_sw_pullups(false)
{
@@ -82,6 +84,7 @@ void apple2_gameio_device::iiandplus_options(device_slot_interface &slot)
slot.option_add("gizmo", APPLE2_GIZMO);
slot.option_add("compeyes", APPLE2_COMPUTEREYES);
slot.option_add("wicojoy", APPLE2_WICO_JOYSTICK);
+ slot.option_add("brightpen", APPLE2_BRIGHTPEN);
}
void apple2_gameio_device::default_options(device_slot_interface &slot)
@@ -105,8 +108,10 @@ void apple2_gameio_device::device_config_complete()
void apple2_gameio_device::device_resolve_objects()
{
- if (m_intf)
+ if (m_intf) {
m_intf->m_connector = this;
+ m_intf->set_screen(m_screen);
+ }
}
void apple2_gameio_device::device_start()
diff --git a/src/devices/bus/a2gameio/gameio.h b/src/devices/bus/a2gameio/gameio.h
index 1f8d53a8c20..dfe2f3716bd 100644
--- a/src/devices/bus/a2gameio/gameio.h
+++ b/src/devices/bus/a2gameio/gameio.h
@@ -11,6 +11,7 @@
#pragma once
+#include "screen.h"
//**************************************************************************
// TYPE DEFINITIONS
@@ -37,6 +38,13 @@ public:
set_fixed(false);
}
+ template <typename T, typename U>
+ apple2_gameio_device(const machine_config &mconfig, const char *tag, device_t *owner, T &&screen_tag, U &&opts, const char *dflt)
+ : apple2_gameio_device(mconfig, tag, owner, opts, dflt)
+ {
+ m_screen.set_tag(std::forward<T>(screen_tag));
+ }
+
// configuration
void set_sw_pullups(bool enabled) { m_sw_pullups = enabled; }
bool has_sw_pullups() const { return m_sw_pullups; }
@@ -77,6 +85,8 @@ protected:
virtual void device_resolve_objects() override;
virtual void device_start() override;
+ optional_device<screen_device> m_screen;
+
private:
// selected device
device_a2gameio_interface *m_intf;
@@ -115,6 +125,8 @@ protected:
virtual void an4_w(int state) { }
virtual void strobe_w(int state) { }
+ void set_screen(screen_device *screen) { m_screen = screen; }
+ screen_device *m_screen;
private:
apple2_gameio_device *m_connector;
};
diff --git a/src/mame/apple/apple2.cpp b/src/mame/apple/apple2.cpp
index 2ff28d76335..37d068bbaa8 100644
--- a/src/mame/apple/apple2.cpp
+++ b/src/mame/apple/apple2.cpp
@@ -1155,7 +1155,7 @@ void apple2_state::apple2_common(machine_config &config)
m_softlatch->q_out_cb<6>().append(m_video, FUNC(a2_video_device::an2_w));
m_softlatch->q_out_cb<7>().set(m_gameio, FUNC(apple2_gameio_device::an3_w));
- APPLE2_GAMEIO(config, m_gameio, apple2_gameio_device::iiandplus_options, nullptr);
+ APPLE2_GAMEIO(config, m_gameio, m_screen, apple2_gameio_device::iiandplus_options, nullptr);
/* keyboard controller */
AY3600(config, m_ay3600, 0);