Function FL_TEST_FILE

tests/fl/fx/1d/perlin_particle_punch.cpp:9–215

#include "fl/fx/1d/perlin_particle_punch.h"

FL_TEST_FILE(FL_FILEPATH) {

using namespace fl;

// Helper: count non-black LEDs in the buffer
static int countLitLeds(const CRGB *leds, u16 count) {
    int lit = 0;
    for (u16 i = 0; i < count; ++i) {
        if (leds[i].r > 0 || leds[i].g > 0 || leds[i].b > 0)
            lit++;
    }
    return lit;
}

// Helper: check if any LEDs in a range are lit
static bool anyLitInRange(const CRGB *leds, int start, int end, u16 count) {
    if (start < 0) start = 0;
    if (end > (int)count) end = (int)count;
    for (int i = start; i < end; ++i) {
        if (leds[i].r > 0 || leds[i].g > 0 || leds[i].b > 0)
            return true;
    }
    return false;
}

FL_TEST_CASE("PerlinParticlePunch: ambient particles spawn at position 0") {
    constexpr u16 NUM_LEDS = 50;
    CRGB leds[NUM_LEDS];
    PerlinParticlePunch fx(NUM_LEDS);

    // Spawn ambient particles
    for (int i = 0; i < 5; i++) {
        fx.spawnAmbient(0.8f);
    }

    // Draw first frame — particles should be near position 0
    Fx::DrawContext ctx(1000, leds);
    fx.draw(ctx);

    // LEDs near position 0 should be lit (particles + noise)
    FL_CHECK(anyLitInRange(leds, 0, 10, NUM_LEDS));
}

FL_TEST_CASE("PerlinParticlePunch: ambient particles move forward over frames") {
    constexpr u16 NUM_LEDS = 50;
    CRGB leds[NUM_LEDS];
    PerlinParticlePunch fx(NUM_LEDS);
    fx.setSpeed(2.0f);

    // Spawn several ambient particles
    for (int i = 0; i < 10; i++) {
        fx.spawnAmbient(1.0f);
    }

    // Run many frames to let particles travel
    for (u32 t = 1000; t < 1100; t += 1) {
        Fx::DrawContext ctx(t, leds);
        fx.draw(ctx);