Patch Script to convert land-based plane to seaplane

[JeffersonSeaplaneMcDonough]

Hello!

I have recently been attempting to convert one of my land-based planes into a seaplane. I have successfully installed floats on it, but find that my aircraft sinks like a rock. The aircraft in question is an mm_MXS-R 1.2 by Michie Yokosuka, and the mm_MXS-R_script_1.2 it contains is marked as 'no modify'.

Therefore, I have since been trying to learn how to create a patch script which I can insert into my plane's root prim, that will allow my plane to float on water. Based on past forum posts, I have crafted the following script, but it does not seem to work:

default
{
    state_entry()
    {
        vector pos = llGetPos();
            float altitude_sea = (pos.z - llWater(ZERO_VECTOR));
            if (altitude_sea > 0 )
            {
                llSetVehicleFloatParam( VEHICLE_HOVER_HEIGHT, 0 );
                llSetVehicleFloatParam( VEHICLE_HOVER_EFFICIENCY, 0 ); 
                llSetVehicleFloatParam( VEHICLE_HOVER_TIMESCALE, 10 );
                llSetVehicleFloatParam( VEHICLE_BUOYANCY, .977 );
            }
            else if (altitude_sea < 0 )
            {
                llSetVehicleFloatParam( VEHICLE_HOVER_HEIGHT, 0 );
                llSetVehicleFloatParam( VEHICLE_HOVER_EFFICIENCY, 0.2 ); 
                llSetVehicleFloatParam( VEHICLE_HOVER_TIMESCALE, 0.4 );
                llSetVehicleFloatParam( VEHICLE_BUOYANCY, 1.0 );
            }
    }
}

I have also installed VICE on the plane via RCX's free installer program, and that process has been a resounding success. So currently the additional scripts installed on the plane's root prim are:

1. RCX VICE+TCS LISTENER
2. VICE Bomb Control v1.2.0
3. VICE+TCS ALA sensor
4. The following VICE Patch:

/**
 * @author: reconx86 (RCX Productions)
 *
 * @license: You are allowed to share this script full-perm with others and even use it in your own projects.
 * But do not sell the script seperately nor as part of a script package.
 *
 * This script is made to make any incompatible mod-vehicle work with VICE.
 * It's not recommended to use unless you really can't script the vehicle at hand, this script may cause glitches and interfere with the main-script functions.
 */
integer seated;
key owner;
integer links;
integer prevLinks;

default
{
    state_entry()
    {
        owner = llGetOwner();
        prevLinks = llGetNumberOfPrims();
    }
    
    changed(integer change)
    {
        if (change & CHANGED_OWNER) {
            owner = llGetOwner();
        }
        if (change & CHANGED_LINK) {
            integer link_nr;
            links = llGetNumberOfPrims();
            for (link_nr = 0; link_nr <= links; link_nr++) {
                if (owner == llGetLinkKey(link_nr)) {
                    if (!seated) {
                        llMessageLinked(LINK_SET, seated = TRUE, "seated", owner);
                    }
                    prevLinks = links;
                }
            }
            if (seated && links == prevLinks - 1) {
                llMessageLinked(LINK_SET, seated = FALSE, "seated", NULL_KEY);
            }
            prevLinks = links;
        }
    }
}

I would really appreciate it if someone could help me perfect my seaplane patch script! 

[Innula Zenovka]

I've not tried it but a quick Google search led me to a reply by Dora Gustafson in this thread.   Anything Dora writes is well worth serious study, and her suggestion here would certainly be worth trying.

 

Edited March 14, 2018 by Innula Zenovka