/****************************************************************************
* apps/graphics/traveler/trv_input.c
* This file contains the main logic for the NuttX version of Traveler
*
* Copyright (C) 2014 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include "trv_types.h"
#include "trv_world.h"
#include "trv_trigtbl.h"
#include "trv_input.h"
#if defined(CONFIG_GRAPHICS_TRAVELER_JOYSTICK)
# include <fcntl.h>
# include <errno.h>
#if defined(CONFIG_GRAPHICS_TRAVELER_AJOYSTICK)
# include <fixedmath.h>
# include <nuttx/input/ajoystick.h>
#elif defined(CONFIG_GRAPHICS_TRAVELER_DJOYSTICK)
# include <nuttx/input/djoystick.h>
#endif
#elif defined(CONFIG_GRAPHICS_TRAVELER_NX_XYINPUT)
#endif
/****************************************************************************
* Pre-processor Definitions
*************************************************************************/
/****************************************************************************
* Private Types
*************************************************************************/
struct trv_input_info_s
{
#if defined(CONFIG_GRAPHICS_TRAVELER_JOYSTICK)
int fd; /* Open driver descriptor */
#ifdef CONFIG_GRAPHICS_TRAVELER_AJOYSTICK
int16_t centerx; /* Center X position */
b16_t leftslope; /* Slope for left of center */
b16_t rightslope; /* Slope for left of center */
int16_t centery; /* Center Y position */
b16_t fwdslope; /* Slope for forward from center */
b16_t backslope; /* Slope for backward from center */
#endif
#elif defined(CONFIG_GRAPHICS_TRAVELER_NX_XYINPUT)
trv_coord_t xpos; /* Reported X position */
trv_coord_t ypos; /* Reported Y position */
uint8_t buttons; /* Report button set */
#endif
};
/****************************************************************************
* Public Data
*************************************************************************/
/* Report positional inputs */
struct trv_input_s g_trv_input;
/****************************************************************************
* Private Function Prototypes
****************************************************************************/
#ifdef CONFIG_GRAPHICS_TRAVELER_NX_XYINPUT
static struct trv_input_info_s g_trv_input_info;
#endif
/****************************************************************************
* Private Data
*************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: trv_joystick_calibrate
*
* Description:
* Calibrate the joystick
*
****************************************************************************/
#ifdef CONFIG_GRAPHICS_TRAVELER_AJOYSTICK
static void trv_joystick_calibrate(void)
{
#warning Missing logic"
}
#endif
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: trv_input_initialize
*
* Description:
* Initialize the selected input device
*
****************************************************************************/
void trv_input_initialize(void)
{
#if defined(CONFIG_GRAPHICS_TRAVELER_JOYSTICK)
/* Open the joy stick device */
g_trv_input_info.fd = open(CONFIG_GRAPHICS_TRAVELER_JOYDEV, O_RDONLY);
if (g_trv_input_info.fd < 0)
{
trv_abort("ERROR: Failed to open %s: %d\n",
CONFIG_GRAPHICS_TRAVELER_JOYDEV, errno);
}
#ifdef CONFIG_GRAPHICS_TRAVELER_AJOYSTICK
/* Calibrate the analog joystick device */
trv_joystick_calibrate();
#endif
#elif defined(CONFIG_GRAPHICS_TRAVELER_NX_XYINPUT)
/* Set the position to the center of the display at eye-level */
#warning Missing logic
#endif
}
/****************************************************************************
* Name: trv_input_read
*
* Description:
* Read the next input from the input device
*
****************************************************************************/
void trv_input_read(void)
{
#if defined(CONFIG_GRAPHICS_TRAVELER_JOYSTICK)
#if defined(CONFIG_GRAPHICS_TRAVELER_AJOYSTICK)
struct ajoy_sample_s sample;
int16_t move_rate;
int16_t turn_rate;
ssize_t nread;
/* Read data from the analog joystick */
nread = read(g_trv_input_info.fd, &sample, sizeof(struct ajoy_sample_s));
if (nread < 0)
{
trv_abort("ERROR: Joystick read error: %d\n", errno);
}
else if (nread != sizeof(struct ajoy_sample_s))
{
trv_abort("ERROR: Unexpected joystick read size: %ld\n", (long)nread);
}
/* Determine the input data to return to the POV logic */
#warning Missing logic
#elif defined(CONFIG_GRAPHICS_TRAVELER_DJOYSTICK)
struct djoy_buttonset_t buttonset;
ssize_t nread;
/* Read data from the discrete joystick */
nread = read(g_trv_input_info.fd, &buttonset, sizeof(djoy_buttonset_t));
if (nread < 0)
{
trv_abort("ERROR: Joystick read error: %d\n", errno);
}
else if (nread != sizeof(struct djoy_buttonset_t))
{
trv_abort("ERROR: Unexpected joystick read size: %ld\n", (long)nread);
}
/* Determine the input data to return to the POV logic */
if ((buttonset & DJOY_BUTTON_RUN_BIT) != 0)
{
/* Run faster/step higher */
g_trv_input.stepheight = g_run_step_height;
move_rate = 2 * STEP_DISTANCE;
turn_rate = ANGLE_9;
}
else
{
/* Normal walking rate and stepping height */
g_trv_input.stepheight = g_walk_step_height;
move_rate = STEP_DISTANCE;
turn_rate = ANGLE_6;
}
/* Move forward or backward OR look up or down */
g_trv_input.pitchrate = 0;
g_trv_input.fwdrate = 0;
switch (buttonset & (DJOY_UP_BIT | DJOY_DOWN_BIT))
{
case 0:
case (DJOY_UP_BIT | DJOY_DOWN_BIT):
/* Don't move, don't nod */
break;
case DJOY_UP_BIT:
if ((buttonset & DJOY_BUTTON_FIRE_BIT) != 0)
{
/* Look upward */
g_trv_input.pitchrate = turn_rate;
}
else
{
/* Move forward */
g_trv_input.fwdrate = move_rate;
}
break;
case DJOY_DOWN_BIT:
if ((buttonset & DJOY_BUTTON_FIRE_BIT) != 0)
{
/* Look downward */
g_trv_input.pitchrate = -turn_rate;
}
else
{
/* Move Backward */
g_trv_input.fwdrate = -move_rate;
}
break;
}
/* Move forward or backward OR look up or down */
g_trv_input.yawrate = 0;
g_trv_input.leftrate = 0;
switch (buttonset & (DJOY_LEFT_BIT | DJOY_RIGHT_BIT))
{
case 0:
case (DJOY_LEFT_BIT | DJOY_RIGHT_BIT):
/* Don't move, don't nod */
break;
case DJOY_LEFT_BIT:
if ((buttonset & DJOY_BUTTON_FIRE_BIT) != 0)
{
/* Turn left */
g_trv_input.yawrate = turn_rate;
}
else
{
/* Move left */
g_trv_input.leftrate = move_rate;
}
break;
case DJOY_RIGHT_BIT:
if ((buttonset & DJOY_BUTTON_FIRE_BIT) != 0)
{
/* Turn right */
g_trv_input.yawrate = -turn_rate;
}
else
{
/* Move right */
g_trv_input.leftrate = -move_rate;
}
break;
}
g_trv_input.leftrate = ((buttonset & DJOY_BUTTON_SELECT) != 0);
#endif /* CONFIG_GRAPHICS_TRAVELER_DJOYSTICK */
#elif defined(CONFIG_GRAPHICS_TRAVELER_NX_XYINPUT)
/* Make position decision based on last sampled X/Y input data */
#warning Missing logic
#endif
}
/****************************************************************************
* Name: trv_input_terminate
*
* Description:
* Terminate input and free resources
*
****************************************************************************/
void trv_input_terminate(void)
{
#ifdef CONFIG_GRAPHICS_TRAVELER_JOYSTICK
#endif
#warning Missing Logic
}
/****************************************************************************
* Name: trv_input_xyinput
*
* Description:
* Receive X/Y input from NX
*
****************************************************************************/
#ifdef CONFIG_GRAPHICS_TRAVELER_NX_XYINPUT
void trv_input_xyinput(trv_coord_t xpos, trv_coord_t xpos, uint8_t buttons)
{
/* Just save the positional data and button presses for now. We will
* decide what to do with the data when we are polled for new input.
*/
g_trv_input_info.xpos = xpos;
g_trv_input_info.ypos = ypos;
g_trv_input_info.buttons = buttons;
}
#endif
