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/*
* Copyright 1994-2022 Olivier Girondel
*
* This file is part of lebiniou.
*
* lebiniou is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* lebiniou is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with lebiniou. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __ROLLER_H
#define __ROLLER_H
#include "parameters.h"
static enum Direction direction = RANDOM;
static double roll_theta = 0.0, roll_freq = 0.03;
static double speed = 0;
static int random_speed = 1;
#define BPP_RANDOM_SPEED "random_speed"
json_t *
get_parameters(const uint8_t fetch_all)
{
json_t *params = json_object();
plugin_parameters_add_string_list(params, BPP_DIRECTION, DIRECTION_NB, direction_list, direction, DIRECTION_NB-1, "Direction");
plugin_parameters_add_boolean(params, BPP_RANDOM_SPEED, random_speed, "Random speed");
if (!random_speed || fetch_all) {
plugin_parameters_add_double(params, BPP_SPEED, speed, 0.01, 0.4, 0.01, "Rolling speed");
}
return params;
}
void
set_speed_parameters(const Context_t *ctx, const json_t *in_parameters, int *speed_changed, int *random_speed_changed)
{
*speed_changed = plugin_parameter_parse_double_range(in_parameters, BPP_SPEED, &speed) & PLUGIN_PARAMETER_CHANGED;
*random_speed_changed = plugin_parameter_parse_boolean(in_parameters, BPP_RANDOM_SPEED, &random_speed) & PLUGIN_PARAMETER_CHANGED;
}
void set_parameters(const Context_t *ctx, const json_t *in_parameters);
json_t *
parameters(const Context_t *ctx, const json_t *in_parameters, const uint8_t fetch_all)
{
if (NULL != in_parameters) {
set_parameters(ctx, in_parameters);
}
return get_parameters(fetch_all);
}
static void
inc_theta(void)
{
roll_theta += roll_freq;
if (roll_theta > (2 * M_PI)) {
roll_theta -= 2 * M_PI;
} else if (roll_theta < (-2 * M_PI)) {
roll_theta += 2 * M_PI;
}
}
static double
get_random_speed(void)
{
return b_rand_double_range(0.02, 0.1);
}
void
on_switch_on(Context_t *ctx)
{
random_speed = 1;
speed = roll_freq = get_random_speed();
direction = RANDOM;
if (b_rand_boolean()) {
roll_freq = -roll_freq;
}
#ifdef DEBUG
VERBOSE(printf("[i] %s:%s direction= %s, speed= %f, roll_freq= %f\n", __FILE__, __func__, direction_list[direction], speed, roll_freq));
#endif
}
#endif /* __ROLLER_H */
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