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add multiple meteors and ability to slow meteors #5758

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add multiple meteors and ability to slow meteors #5758

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163d455
add multiple meteors and ability to slow meteors
benjamw Jul 28, 2026
7ab24be
fix whitespace
benjamw Jul 28, 2026
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41 changes: 23 additions & 18 deletions wled00/FX.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -2379,13 +2379,15 @@ void mode_meteor() {
if (SEGLEN <= 1) FX_FALLBACK_STATIC;
if (!SEGENV.allocateData(SEGLEN)) FX_FALLBACK_STATIC; //allocation failed
const bool meteorSmooth = SEGMENT.check3;
const bool slow = SEGMENT.check2;
byte* trail = SEGENV.data;

const unsigned meteorSize = 1 + SEGLEN / 20; // 5%
const unsigned numMeteors = 1 + (SEGMENT.custom1 >> 5); // 1..8 meteors
uint16_t meteorstart;
if(meteorSmooth) meteorstart = map((SEGENV.step >> 6 & 0xFF), 0, 255, 0, SEGLEN -1);
else {
unsigned counter = strip.now * ((SEGMENT.speed >> 2) + 8);
unsigned counter = strip.now * (slow ? (SEGMENT.speed >> 4) + 1 : (SEGMENT.speed >> 2) + 8);
meteorstart = (counter * SEGLEN) >> 16;
}

Expand Down Expand Up @@ -2417,29 +2419,32 @@ void mode_meteor() {
}
}

// draw meteor
for (unsigned j = 0; j < meteorSize; j++) {
unsigned index = (meteorstart + j) % SEGLEN;
if(meteorSmooth) {
trail[index] = max;
uint32_t col = SEGMENT.check1 ? SEGMENT.color_from_palette(index, true, false, 0, trail[index]) : SEGMENT.color_from_palette(trail[index], false, true, 255);
// draw meteor(s), evenly spaced along the strip
for (unsigned m = 0; m < numMeteors; m++) {
unsigned start = (meteorstart + m * SEGLEN / numMeteors) % SEGLEN;
for (unsigned j = 0; j < meteorSize; j++) {
unsigned index = (start + j) % SEGLEN;
if(meteorSmooth) {
trail[index] = max;
uint32_t col = SEGMENT.check1 ? SEGMENT.color_from_palette(index, true, false, 0, trail[index]) : SEGMENT.color_from_palette(trail[index], false, true, 255);
SEGMENT.setPixelColor(index, col);
}
else{
int idx = 255;
int i = trail[index] = max;
if (!SEGMENT.check1) {
i = map(index,0,SEGLEN,0,max);
idx = 0;
}
uint32_t col = SEGMENT.color_from_palette(i, false, false, idx, 255); // full brightness
SEGMENT.setPixelColor(index, col);
}
else{
int idx = 255;
int i = trail[index] = max;
if (!SEGMENT.check1) {
i = map(index,0,SEGLEN,0,max);
idx = 0;
}
uint32_t col = SEGMENT.color_from_palette(i, false, false, idx, 255); // full brightness
SEGMENT.setPixelColor(index, col);
}
}

SEGENV.step += SEGMENT.speed +1;
SEGENV.step += (slow ? SEGMENT.speed >> 3 : SEGMENT.speed) + 1;
}
static const char _data_FX_MODE_METEOR[] PROGMEM = "Meteor@!,Trail,,,,Gradient,,Smooth;;!;1";
static const char _data_FX_MODE_METEOR[] PROGMEM = "Meteor@!,Trail,# of Meteors,,,Gradient,Slow,Smooth;;!;1;c1=0";


//Railway Crossing / Christmas Fairy lights
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