// Define the leg object names
string leg_top = "leg_top";
string leg_mid = "leg_mid";
string leg_bot = "leg_bot";

// Define the vehicle object name
string vehicle = "vehicle";

// Define the position and rotation offsets for each leg object
vector top_offset = <0.0, 0.0, 0.1>;
rotation top_rotation = <0.0, 0.0, 0.0, 1.0>;
vector mid_offset = <0.0, 0.0, -0.2>;
rotation mid_rotation = <0.0, 0.0, 0.0, 1.0>;
vector bot_offset = <0.0, 0.0, -0.2>;
rotation bot_rotation = <0.0, 0.0, 0.0, 1.0>;

// Define the leg movement variables
float leg_angle = 0.0;
float leg_speed = 0.0;

default
{
    state_entry()
    {

        // Position and rotate the leg objects relative to the vehicle object
        vector vehicle_pos = llList2Vector(llGetObjectDetails(vehicle, [OBJECT_POS]), 0);
        rotation vehicle_rot = llList2Rot(llGetObjectDetails(vehicle, [OBJECT_ROT]), 0);

        vector top_pos = vehicle_pos + (vehicle_rot * top_offset);
        llSetPos(top_pos);
        llSetRot(vehicle_rot * top_rotation);

        vector mid_pos = top_pos + (vehicle_rot * mid_offset);
        llSetLinkPrimitiveParamsFast(llGetLinkNumber(), [PRIM_POSITION, mid_pos, PRIM_ROTATION, vehicle_rot * mid_rotation]);

        vector bot_pos = mid_pos + (vehicle_rot * bot_offset);
        llSetLinkPrimitiveParamsFast(llGetLinkNumber(), [PRIM_POSITION, bot_pos, PRIM_ROTATION, vehicle_rot * bot_rotation]);

        // Start the leg movement timer
        llSetTimerEvent(0.1);
    }

    timer()
    {
        // Get the vehicle velocity and direction
        vector vehicle_vel = llList2Vector(llGetObjectDetails(vehicle, [OBJECT_VELOCITY]), 0);
        vector vehicle_dir = llRot2Fwd(llList2Rot(llGetObjectDetails(vehicle, [OBJECT_ROT]), 0));

        // Calculate the leg speed based on the vehicle velocity
        leg_speed = llVecMag(vehicle_vel) * llDot(vehicle_dir, llVecNorm(vehicle_vel));

        // Calculate the leg angle based on the leg speed
        leg_angle += leg_speed * 0.01;

        // Calculate the leg position and rotation based on the leg angle
        vector bot_pos = llGetPos() + (llGetRot() * bot_offset);
        rotation bot_rot = llGetRot() * bot_rotation * llEuler2Rot(<0.0, 0.0, leg_angle>);

        // Update the leg position and rotation
        llSetLinkPrimitiveParamsFast(llGetLinkNumber(), [PRIM_POSITION, bot_pos, PRIM_ROTATION, bot_rot]);
    }
}