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avr/lantern/lantern.c

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/*
Copyright 2022, Savanni D'Gerinel <savanni@luminescent-dreams.com>
This file is part of Savanni's AVR library.
This AVR library 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 3 of the License, or (at your option) any later version.
This AVR library 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 this AVR library. If not, see <https://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include <stdlib.h>
#include "lantern.h"
uint8_t bound_uint8(int value, uint8_t min, uint8_t max) {
if (value > max) {
return max;
} else if (value < min) {
return min;
} else {
return value;
}
}
uint8_t random_step(uint8_t value, uint8_t min, uint8_t max) {
int8_t step = (rand() % 40) - 20;
int new_value = value + step;
return bound_uint8(new_value, min, max);
}
animation_t animation_new(void) {
return (animation_t) {
.color = { .brightness = 7, .r = 0, .g = 0, .b = 0 },
.red_line = time_line_new(0, 0, 0, 0),
.green_line = time_line_new(0, 0, 0, 0),
.blue_line = time_line_new(0, 0, 0, 0),
.frame = 0,
.duration = 0,
};
}
void animation_begin(animation_t *self, uint8_t rdest, uint8_t gdest, uint8_t bdest, uint8_t duration) {
self->red_line = time_line_new(0, self->color.r, duration, rdest);
self->green_line = time_line_new(0, self->color.g, duration, gdest);
self->blue_line = time_line_new(0, self->color.b, duration, bdest);
self->frame = 0;
self->duration = duration;
}
void animation_step(animation_t *self) {
if (self->frame == self->duration) {
self->frame = 0;
self->duration = 0;
} else {
self->frame++;
self->color.r = bound_uint8(time_line_next(&self->red_line), 0, 255);
self->color.g = bound_uint8(time_line_next(&self->green_line), 0, 255);
self->color.b = bound_uint8(time_line_next(&self->blue_line), 0, 255);
}
}
bool animation_running(animation_t *self) {
return self->frame != self->duration;
}
lantern_t lantern_new(sk9822_t lights) {
sk9822_init(&lights);
return (lantern_t){
.lights = lights,
.color_scheme = normal,
.animations = {
animation_new(),
animation_new(),
animation_new(),
animation_new(),
animation_new(),
animation_new(),
animation_new(),
animation_new(),
animation_new(),
}
};
}
void lantern_start_normal(lantern_t *self, int light_idx) {
switch (light_idx) {
case 0:
animation_begin(
&self->animations[0],
random_step(self->animations[0].color.r, 180, 255),
random_step(self->animations[0].color.g, 20, 50),
0,
5);
animation_begin(
&self->animations[3],
random_step(self->animations[3].color.r, 180, 255),
random_step(self->animations[3].color.g, 20, 50),
0,
5);
animation_begin(
&self->animations[6],
random_step(self->animations[3].color.r, 180, 255),
random_step(self->animations[3].color.g, 20, 50),
0,
5);
break;
case 1:
animation_begin(
&self->animations[1],
random_step(self->animations[1].color.r, 160, 230),
random_step(self->animations[1].color.g, 10, 30),
0,
5);
animation_begin(
&self->animations[4],
random_step(self->animations[4].color.r, 160, 230),
random_step(self->animations[4].color.g, 10, 30),
0,
5);
animation_begin(
&self->animations[7],
random_step(self->animations[7].color.r, 160, 230),
random_step(self->animations[7].color.g, 10, 30),
0,
5);
break;
case 2:
animation_begin(
&self->animations[2],
random_step(self->animations[2].color.r, 140, 170),
random_step(self->animations[2].color.g, 0, 10),
0,
5);
animation_begin(
&self->animations[5],
random_step(self->animations[5].color.r, 140, 170),
random_step(self->animations[5].color.g, 0, 10),
0,
5);
animation_begin(
&self->animations[8],
random_step(self->animations[8].color.r, 140, 170),
random_step(self->animations[8].color.g, 0, 10),
0,
5);
break;
}
}
void lantern_start_spooky(lantern_t *self, int light_idx) {
switch (light_idx) {
case 0:
animation_begin(
&self->animations[0],
0,
random_step(self->animations[0].color.g, 80, 120),
0,
5);
animation_begin(
&self->animations[3],
0,
random_step(self->animations[3].color.g, 80, 120),
0,
5);
animation_begin(
&self->animations[6],
0,
random_step(self->animations[6].color.g, 80, 120),
0,
5);
break;
case 1:
animation_begin(
&self->animations[1],
0,
random_step(self->animations[1].color.g, 60, 100),
0,
5);
animation_begin(
&self->animations[4],
0,
random_step(self->animations[4].color.g, 60, 100),
0,
5);
animation_begin(
&self->animations[7],
0,
random_step(self->animations[7].color.g, 60, 100),
0,
5);
break;
case 2:
animation_begin(
&self->animations[2],
0,
random_step(self->animations[2].color.g, 20, 40),
0,
5);
animation_begin(
&self->animations[5],
0,
random_step(self->animations[5].color.g, 20, 40),
0,
5);
animation_begin(
&self->animations[8],
0,
random_step(self->animations[8].color.g, 20, 40),
0,
5);
break;
}
}
void lantern_start_eerie(lantern_t *self, int light_idx) {
switch (light_idx) {
case 0:
animation_begin(
&self->animations[0],
random_step(self->animations[0].color.r, 20, 40),
random_step(self->animations[0].color.g, 20, 40),
random_step(self->animations[0].color.b, 80, 120),
5);
animation_begin(
&self->animations[3],
random_step(self->animations[3].color.r, 20, 40),
random_step(self->animations[3].color.g, 20, 40),
random_step(self->animations[3].color.b, 80, 120),
5);
animation_begin(
&self->animations[6],
random_step(self->animations[6].color.r, 20, 40),
random_step(self->animations[6].color.g, 20, 40),
random_step(self->animations[6].color.b, 80, 120),
5);
break;
case 1:
animation_begin(
&self->animations[1],
random_step(self->animations[1].color.r, 0, 30),
random_step(self->animations[1].color.g, 0, 30),
random_step(self->animations[1].color.b, 60, 100),
5);
animation_begin(
&self->animations[4],
random_step(self->animations[4].color.r, 0, 30),
random_step(self->animations[4].color.g, 0, 30),
random_step(self->animations[4].color.b, 60, 100),
5);
animation_begin(
&self->animations[7],
random_step(self->animations[7].color.r, 0, 30),
random_step(self->animations[7].color.g, 0, 30),
random_step(self->animations[7].color.b, 60, 100),
5);
break;
case 2:
animation_begin(
&self->animations[2],
random_step(self->animations[2].color.r, 0, 10),
random_step(self->animations[2].color.g, 0, 10),
random_step(self->animations[2].color.b, 20, 40),
5);
animation_begin(
&self->animations[5],
random_step(self->animations[5].color.r, 0, 10),
random_step(self->animations[5].color.g, 0, 10),
random_step(self->animations[5].color.b, 20, 40),
5);
animation_begin(
&self->animations[8],
random_step(self->animations[8].color.r, 0, 10),
random_step(self->animations[8].color.g, 0, 10),
random_step(self->animations[8].color.b, 20, 40),
5);
break;
}
}
void lantern_set_mode(lantern_t *self, color_scheme_e scheme) {
self->color_scheme = scheme;
}
void lantern_step(lantern_t *self, rgb_t colors[LIGHT_COUNT]) {
for (int i = 0; i < LIGHT_COUNT; i++) {
if (!animation_running(&self->animations[i])) {
switch (self->color_scheme) {
case normal:
lantern_start_normal(self, i);
break;
case spooky:
lantern_start_spooky(self, i);
break;
case eerie:
lantern_start_eerie(self, i);
break;
case flash:
break;
}
}
animation_step(&self->animations[i]);
colors[i] = self->animations[i].color;
}
}
/*
void lantern_show(lantern_t *lantern, display_t *display) {
char msg1[20];
char msg2[20];
snprintf(msg1, 20, "[%d,%d] %x,%x,%x",
lantern->animations[0].frame,
lantern->animations[0].duration,
lantern->animations[0].color.r,
lantern->animations[0].color.g,
lantern->animations[0].color.b
);
snprintf(msg2, 20, "%x,%x,%x %x,%x,%x",
lantern->animations[1].color.r,
lantern->animations[1].color.g,
lantern->animations[1].color.b,
lantern->animations[2].color.r,
lantern->animations[2].color.g,
lantern->animations[2].color.b
);
display_clear(display);
display_write_message(display, msg1);
display_set_location(display, 1, 0);
display_write_message(display, msg2);
}
*/
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