// CONVEYOR WALL — the endless belt: alternate tile rows stream the picture
// in opposite directions forever, rolling away over the lip at each edge.
// Pattern taught here: the conveyor's motion NEVER speed-modulates (a
// time-scaled position would jump when a binding moved) — the beat lives
// in the light instead: lanes flash in golden-ratio sequence every beat
// (shader-side) and p2 pumps the grout lattice.
{
    name: "Conveyor Wall"
    engine: "tiles"
    mode: "conveyor"
    seed: 31

    grid: 30
    spread: 8.5
    aspect: 0.72
    gap: 0.08
    amp: 0.35
    freq: 1.5

    beat_pulse: 0.8
    p2: "0.10 + 0.30 * pulse"
    p0: 0.5  p1: 0.5
    glow: "0.25 + 1.5*p0"

    // PERFORMANCE DIALS — GROUT is the engine's own p2 lever (touching it
    // holds the lattice pump); GLOW and SPLIT route p0/p1 through the glow
    // key and the chroma stage. Mid-knob = the stock look, exact.
    dials: [
        {name: "GLOW", bind: "p0", default: 0.5},
        {name: "SPLIT", bind: "p1", default: 0.5},
        {name: "GROUT", bind: "p2", default: 0.5}
    ]

    input0: "test"

    color_bg: #x120806
    color_a: #xffb35a
    color_b: #xd84518
    color_c: #xffd9a8

    stages: [
        {kind: "chroma", p1: "(0.10 + 0.14 * pulse) * (0.2 + 1.6*p1)", p2: 0.0},
        {kind: "bloom", threshold: 0.6, strength: 1.0, levels: 3}
    ]

    // THE LOOK LIVES HERE. This block is not a reference to the
    // engine's shader — it IS the pixel math this effect runs.
    // Rewrite it and the effect looks different; everything else
    // (geometry, motion, the content coupling, the beat) keeps
    // working, because the block SUBCLASSES the engine shader.
    // Inputs: t = the mode highlight drive, attr = (shade, edge, stagger, tumble).
    // Signals: self.time_beat (time, beat, phase, pulse),
    // self.sig (bar, bpm, energy, dt), self.user (p0..p3),
    // self.col_a/b/c/bg, self.fog (density, glow, content, -).
    shader: draw.DrawVjFxTiles {
        fx_color: fn(t: float, attr: vec4, content: vec4, cmix: float) -> vec4 {
            let border = attr.y
            let lit = content.xyz * (attr.x * (0.35 + 0.65 * border))
            let glowline = self.col_c.xyz * (1.0 - border)
                * (t + clamp(self.user.z, 0.0, 4.0))
            return vec4((lit + glowline) * self.fog.y, 1.0)
        }
    }
}