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author etabeta78 <doge.fabio@gmail.com>2016-04-23 19:07:33 +0200
committer etabeta78 <doge.fabio@gmail.com>2016-04-23 19:07:33 +0200
commit3b1f24dd829d3f9a07d77f70ee3fa1c82a6d33b9 (patch)
tree30af56bcbb2b69ff0a936615f3c83ddd2f8b697e /src/devices/bus/sat_ctrl/pointer.cpp
parentd80b977719978293b5f22f3bea4454fcf976f36f (diff)
saturn.cpp: converted controllers to work through slot devices,
cleaning up the related code. [Fabio Priuli] saturn.cpp: added emulation of the SegaTap adapter (4 controllers) and Sega Multitap adapter (6 controllers). Saturn Bomberman can now be played as intended. [Fabio Priuli]
Diffstat (limited to 'src/devices/bus/sat_ctrl/pointer.cpp')
-rw-r--r--src/devices/bus/sat_ctrl/pointer.cpp120
1 files changed, 120 insertions, 0 deletions
diff --git a/src/devices/bus/sat_ctrl/pointer.cpp b/src/devices/bus/sat_ctrl/pointer.cpp
new file mode 100644
index 00000000000..cfc2bbfc3b2
--- /dev/null
+++ b/src/devices/bus/sat_ctrl/pointer.cpp
@@ -0,0 +1,120 @@
+// license:BSD-3-Clause
+// copyright-holders:Fabio Priuli
+/**********************************************************************
+
+ Sega Saturn Pointing Controller / Trackball emulation
+
+ This is basically the same as a mouse, but it uses a different ID
+
+**********************************************************************/
+
+#include "pointer.h"
+
+//**************************************************************************
+// DEVICE DEFINITIONS
+//**************************************************************************
+
+const device_type SATURN_TRACK = &device_creator<saturn_track_device>;
+
+
+static INPUT_PORTS_START( saturn_track )
+ PORT_START("POINT_X")
+ PORT_BIT(0xffff, 0x00, IPT_MOUSE_X) PORT_SENSITIVITY(100) PORT_MINMAX(0x000, 0xffff) PORT_KEYDELTA(2) PORT_RESET PORT_NAME("Pointer X")
+
+ PORT_START("POINT_Y")
+ PORT_BIT(0xffff, 0x00, IPT_MOUSE_Y) PORT_SENSITIVITY(100) PORT_MINMAX(0x000, 0xffff) PORT_KEYDELTA(2) PORT_RESET PORT_REVERSE PORT_NAME("Pointer Y")
+
+ PORT_START("BUTTONS")
+ PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_BUTTON1 ) PORT_NAME("Left Button")
+ PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_BUTTON2 ) PORT_NAME("Right Button")
+ PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_BUTTON3 ) PORT_NAME("Middle Button")
+ PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_START ) PORT_NAME("Start Button")
+INPUT_PORTS_END
+
+
+//-------------------------------------------------
+// input_ports - device-specific input ports
+//-------------------------------------------------
+
+ioport_constructor saturn_track_device::device_input_ports() const
+{
+ return INPUT_PORTS_NAME( saturn_track );
+}
+
+
+//**************************************************************************
+// LIVE DEVICE
+//**************************************************************************
+
+//-------------------------------------------------
+// saturn_track_device - constructor
+//-------------------------------------------------
+
+saturn_track_device::saturn_track_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) :
+ device_t(mconfig, SATURN_TRACK, "Sega Saturn Pointing Controller / Trackball", tag, owner, clock, "saturn_track", __FILE__),
+ device_saturn_control_port_interface(mconfig, *this),
+ m_pointx(*this, "POINT_X"),
+ m_pointy(*this, "POINT_Y"),
+ m_buttons(*this, "BUTTONS")
+{
+ m_ctrl_id = 0x23;
+}
+
+
+//-------------------------------------------------
+// device_start - device-specific startup
+//-------------------------------------------------
+
+void saturn_track_device::device_start()
+{
+}
+
+
+//-------------------------------------------------
+// device_reset - device-specific reset
+//-------------------------------------------------
+
+void saturn_track_device::device_reset()
+{
+}
+
+
+//-------------------------------------------------
+// read_ctrl
+//-------------------------------------------------
+
+UINT8 saturn_track_device::read_ctrl(UINT8 offset)
+{
+ UINT8 res = 0;
+ UINT8 mouse_ctrl = m_buttons->read();
+ INT16 mouse_x = m_pointx->read();
+ INT16 mouse_y = m_pointy->read();
+
+ if (mouse_x < 0)
+ mouse_ctrl |= 0x10;
+
+ if (mouse_y < 0)
+ mouse_ctrl |= 0x20;
+
+ if ((mouse_x & 0xff00) != 0xff00 && (mouse_x & 0xff00) != 0x0000)
+ mouse_ctrl |= 0x40;
+
+ if ((mouse_y & 0xff00) != 0xff00 && (mouse_y & 0xff00) != 0x0000)
+ mouse_ctrl |= 0x80;
+
+ switch (offset)
+ {
+ case 0:
+ default:
+ res = mouse_ctrl;
+ break;
+ case 1:
+ res = mouse_x & 0xff;
+ break;
+ case 2:
+ res = mouse_y & 0xff;
+ break;
+ }
+ return res;
+}
+