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Merge pull request #1579 from blazoncek/fire2012-mod

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Fire2012 mod & optimization.
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Aircoookie 2020-12-26 11:59:47 +01:00 committed by GitHub
commit b5e02e6ff9
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1 changed files with 6 additions and 3 deletions
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wled00/FX.cpp
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@ -1780,19 +1780,22 @@ uint16_t WS2812FX::mode_fire_2012()
if (it != SEGENV.step)
{
uint8_t ignition = max(7,SEGLEN/10); // ignition area: 10% of segment length or minimum 7 pixels
// Step 1. Cool down every cell a little
for (uint16_t i = 0; i < SEGLEN; i++) {
SEGENV.data[i] = qsub8(heat[i], random8(0, (((20 + SEGMENT.speed /3) * 10) / SEGLEN) + 2));
uint8_t temp = qsub8(heat[i], random8(0, (((20 + SEGMENT.speed /3) * 10) / SEGLEN) + 2));
heat[i] = (temp==0 && i<ignition) ? 2 : temp; // prevent ignition area from becoming black
}
// Step 2. Heat from each cell drifts 'up' and diffuses a little
for (uint16_t k= SEGLEN -1; k > 1; k--) {
heat[k] = (heat[k - 1] + heat[k - 2] + heat[k - 2] ) / 3;
heat[k] = (heat[k - 1] + (heat[k - 2]<<1) ) / 3; // heat[k-2] multiplied by 2
}
// Step 3. Randomly ignite new 'sparks' of heat near the bottom
if (random8() <= SEGMENT.intensity) {
uint8_t y = random8(7);
uint8_t y = random8(ignition);
if (y < SEGLEN) heat[y] = qadd8(heat[y], random8(160,255));
}
SEGENV.step = it;