// SPDX-License-Identifier: MIT
// Copyright (c) 2026 Incoprea
// Fold elapsed time into a back-and-forth cycle
// Not compiled or tested in-world
// Setup: Put in a spare owned prim. Set positive PERIOD for a full out-and-back cycle and sample TIMES. Owner touch prints calculations only.
// Stop / restore: Disable/remove. No prim motion or appearance is changed.
// Notes: Uses floor-based wrapping so negative input times remain well-defined.
// License: see LICENSE in this distribution.
// Original Incoprea. MIT. Motion planning only.
float PERIOD=4.0;
list TIMES=[0.0,1.0,2.0,3.0,4.0,5.0];
default
{
    touch_start(integer detectedCount)
    {
        if(llDetectedKey(0)!=llGetOwner())return;
        if(PERIOD<=0.0)
        {
            llOwnerSay("Positive period required.");
            return;
        }
        integer i;
        for(i=0;i<llGetListLength(TIMES);++i)
        {
            float t=llList2Float(TIMES,i);
            float phase=t/PERIOD;
            phase-=llFloor(phase);
            float progress=1.0-llFabs(2.0*phase-1.0);
            llOwnerSay("t="+(string)t+" progress="+(string)progress);
        }
    }
}