Ever since I began subscribing to Kitely, it’s bothered me that the ocean around my island is flat and unchanging. I looked around for a tidal range script and discovered that there wasn’t one to be found. With some help from Krull Kitty, I tried to develop one, but nothing worked. So, I thought about it. For a year.
I decided to base the script on sun position.z and assumed that it's a linear progression ranging from -1.000000 to 1.000000. It isn’t. So, I sat on a rock in Kitely for two hours and noted the sun position.z figure every 2-1/2 minutes. A tidal range of around five metres felt about right, approximating the Bristol Channel, due north of Plymouth.
O.5m increments looked jarringly obvious, so I opted for 0.25m increments, even though it doubled the number of steps. There are “slack “ periods at the top and bottom of each tide, so I’ve reflected those.
I developed a script that rises and falls twice every Kitely (4 hour) day, with a range from 13.75m to 19.00m in 0.25m increments every 2-1/2 minutes. I’ve tested it on ReGen (which you are welcome to visit and watch) and it appears to be working exactly as I’d hoped. Simply drop the script into a convenient rock and off it goes. If you want it to stop, just delete it again. The tide isn’t something you can switch on and off!
I do know that incorporating the script drove me to a frenzy of terraforming for a while. Some areas, particularly river beds and shorelines, just didn’t look right as they drained. But now I have an island that looks and feels more like home!
Code: Select all
// This script adjusts the Region Water Height between 13.75m & 19.00m in 0.25m increments at 2-1/2 minute intervals.
// It's designed to run continuously, creating two high tides and two low tides per Kitely day.
default {
state_entry() {
llSetTimerEvent(10);
}
timer() {
vector sun = llGetSunDirection();
if(sun.z >=0.997912 & sun.z <=1.000000) osSetRegionWaterHeight(19.00);
if(sun.z >=0.991539 & sun.z <=0.997911) osSetRegionWaterHeight(19.00);
if(sun.z >=0.980909 & sun.z <=0.991538) osSetRegionWaterHeight(18.75);
if(sun.z >=0.966069 & sun.z <=0.980908) osSetRegionWaterHeight(18.75);
if(sun.z >=0.947080 & sun.z <=0.966068) osSetRegionWaterHeight(18.50);
if(sun.z >=0.924026 & sun.z <=0.947079) osSetRegionWaterHeight(18.25);
if(sun.z >=0.897005 & sun.z <=0.924025) osSetRegionWaterHeight(18.00);
if(sun.z >=0.866133 & sun.z <=0.897004) osSetRegionWaterHeight(17.75);
if(sun.z >=0.831543 & sun.z <=0.866132) osSetRegionWaterHeight(17.50);
if(sun.z >=0.793380 & sun.z <=0.831542) osSetRegionWaterHeight(17.25);
if(sun.z >=0.751817 & sun.z <=0.793379) osSetRegionWaterHeight(17.00);
if(sun.z >=0.707031 & sun.z <=0.751816) osSetRegionWaterHeight(16.75);
if(sun.z >=0.663921 & sun.z <=0.707030) osSetRegionWaterHeight(16.50);
if(sun.z >=0.618480 & sun.z <=0.663920) osSetRegionWaterHeight(16.25);
if(sun.z >=0.570870 & sun.z <=0.618479) osSetRegionWaterHeight(16.00);
if(sun.z >=0.522940 & sun.z <=0.570869) osSetRegionWaterHeight(15.75);
if(sun.z >=0.471556 & sun.z <=0.522939) osSetRegionWaterHeight(15.50);
if(sun.z >=0.418517 & sun.z <=0.471555) osSetRegionWaterHeight(15.25);
if(sun.z >=0.364010 & sun.z <=0.418516) osSetRegionWaterHeight(15.00);
if(sun.z >=0.308227 & sun.z <=0.364009) osSetRegionWaterHeight(14.75);
if(sun.z >=0.251360 & sun.z <=0.308226) osSetRegionWaterHeight(14.50);
if(sun.z >=0.193613 & sun.z <=0.251359) osSetRegionWaterHeight(14.25);
if(sun.z >=0.135184 & sun.z <=0.193612) osSetRegionWaterHeight(14.00);
if(sun.z >=0.076282 & sun.z <=0.135183) osSetRegionWaterHeight(13.75);
if(sun.z >=0.004736 & sun.z <=0.076281) osSetRegionWaterHeight(13.75);
if(sun.z >=-0.067037 & sun.z <=0.004735) osSetRegionWaterHeight(13.75);
if(sun.z >=-0.138467 & sun.z <=-0.067038) osSetRegionWaterHeight(14.00);
if(sun.z >=-0.209184 & sun.z <=-0.138468) osSetRegionWaterHeight(14.25);
if(sun.z >=-0.278821 & sun.z <=-0.209185) osSetRegionWaterHeight(14.50);
if(sun.z >=-0.347021 & sun.z <=-0.278822) osSetRegionWaterHeight(14.75);
if(sun.z >=-0.413429 & sun.z <=-0.347022) osSetRegionWaterHeight(15.00);
if(sun.z >=-0.477706 & sun.z <=-0.413430) osSetRegionWaterHeight(15.25);
if(sun.z >=-0.539519 & sun.z <=-0.477707) osSetRegionWaterHeight(15.50);
if(sun.z >=-0.598548 & sun.z <=-0.539520) osSetRegionWaterHeight(15.75);
if(sun.z >=-0.654495 & sun.z <=-0.598549) osSetRegionWaterHeight(16.00);
if(sun.z >=-0.707065 & sun.z <=-0.654496) osSetRegionWaterHeight(16.25);
if(sun.z >=-0.751862 & sun.z <=-0.707066) osSetRegionWaterHeight(16.50);
if(sun.z >=-0.793425 & sun.z <=-0.751863) osSetRegionWaterHeight(16.75);
if(sun.z >=-0.831581 & sun.z <=-0.793426) osSetRegionWaterHeight(17.00);
if(sun.z >=-0.865073 & sun.z <=-0.831582) osSetRegionWaterHeight(17.25);
if(sun.z >=-0.897036 & sun.z <=-0.865074) osSetRegionWaterHeight(17.50);
if(sun.z >=-0.923216 & sun.z <=-0.897037) osSetRegionWaterHeight(17.75);
if(sun.z >=-0.946400 & sun.z <=-0.923217) osSetRegionWaterHeight(18.00);
if(sun.z >=-0.965520 & sun.z <=-0.946401) osSetRegionWaterHeight(18.25);
if(sun.z >=-0.980496 & sun.z <=-0.965521) osSetRegionWaterHeight(18.50);
if(sun.z >=-0.991261 & sun.z <=-0.980497) osSetRegionWaterHeight(18.75);
if(sun.z >=-0.997772 & sun.z <=-0.991262) osSetRegionWaterHeight(18.75);
if(sun.z >=-1.000000 & sun.z <=-0.997773) osSetRegionWaterHeight(19.00);
}
}There is a further issue when I noticed that I was regularly drowning the swan floating on the pond in front of our house. So I cobbled together a further script to be inserted into any object that should be floating on the surface of region water.
Code: Select all
// A script to be used in conjunction with "Tidal range adjusting region water height" script
// To be inserted into any object that should float on region water
default
{
state_entry()
{llSetTimerEvent(2.0);}
timer()
{
vector vTarget = llGetPos();
vTarget.z = llGround( ZERO_VECTOR );
float fWaterLevel = llWater( ZERO_VECTOR );
if( vTarget.z < fWaterLevel )
{
vTarget.z = fWaterLevel;
}
llSetRegionPos(vTarget + <0,0,0.1>); //alter the z quantity to adjust object buoyancy
llResetScript();
state Ground;
}
}