Thanks for the help, @ScruffR
I’m new to c++ so just trying to navigate my way.
Here is the newest code I have:
Do you have comments on where to go from here? The tail isn’t being erased.
Also, I would like the chase to be faster. How can I increment the movement of the pixels by 2, instead of just 1? I tried ‘pos+=2’ but that doesn’t work.
/* ======================= includes ================================= */
#include "Particle.h"
#include <neopixel.h>
SYSTEM_MODE(AUTOMATIC);
#define PIXEL_COUNT 864
#define PIXEL_PIN D1
#define PIXEL_TYPE SK6812RGBW
Adafruit_NeoPixel strip(PIXEL_COUNT, PIXEL_PIN, PIXEL_TYPE);
struct ANIMATION_DATA {
uint32_t g;
uint32_t r;
uint32_t b;
int pos;
int len;
};
// circular buffer with 100 slots will overwrite unfinished animations when full
const int maxAnim = 100;
int animHead = 0;
int animTail = 0;
ANIMATION_DATA anim[maxAnim];
const uint32_t msRefresh = 25;
void setup() {
memset(anim, 0, sizeof(anim));
strip.begin();
strip.show(); // Initialize all pixels to 'off'
Particle.function("led", addComet);
}
void loop() {
static uint32_t msDelay = 0;
if (millis() - msDelay < msRefresh) return;
msDelay = millis();
if (animHead != animTail) {
ANIMATION_DATA *a;
for (int i = animTail; i != animHead; ) {
a = &anim[i];
if (a->len) {
if (a->pos < strip.numPixels()) {
strip.setPixelColor(a->pos++, a->g, a->r, a->b, 200);
strip.setPixelColor(a->pos++, a->g, a->r, a->b, 100);
strip.setPixelColor(a->pos++, a->g, a->r, a->b, 75);
strip.setPixelColor(a->pos++, a->g, a->r, a->b, 50);
strip.setPixelColor(a->pos++, a->g, a->r, a->b, 25);
strip.setPixelColor(a->pos++, a->g, a->r, a->b, 10);
strip.setPixelColor(a->pos++, a->g, a->r, a->b, 0);
strip.setPixelColor(a->pos++, a->g, a->r, a->b, 0);
strip.setPixelColor(a->pos++, a->g, a->r, a->b, 0);
}
else
a->len--;
if (a->pos - a->len >= 0) strip.setPixelColor(a->pos - a->len, 0);
if (!a->len) {
*a = { 0, 0, 0 };
animTail++;
animTail %= maxAnim;
}
}
i++;
i %= maxAnim;
}
strip.show();
}
}
int addComet(String command) {
int retVal = -1;
if (command=="login") {
// Do not run more than 15 seconds of these, or the b/g tasks
// will be blocked.
//--------------------------------------------------------------
anim[animHead] = { 0, 0, 0, 0, 10 }; // white
retVal = 0;
}
else if (command=="idea") {
anim[animHead] = { 255, 255, 0, 0, 10 }; // yellow
retVal = 1;
}
else if (command=="comment") {
anim[animHead] = { 0, 0, 255, 0, 10 }; // blue
retVal = 2;
}
else if (command=="outcome") {
anim[animHead] = { 255, 0, 0, 0, 10 }; // green
retVal = 3;
}
else if (command=="projection") {
anim[animHead] = { 255, 0, 0, 0, 10 }; // green
retVal = 4;
}
else {
return -1;
}
animHead++;
animHead %= maxAnim;
return retVal;
}
