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Found 14 results

  1. I've been looking at why vehicle behavior when crossing sim boundaries is so bad. One problem is viewer-side. The effect where vehicles go flying off into space at a sim crossing and then come back is a viewer-side problem. Whatever extrapolation algorithm "Velocity Interpolate Objects" uses is flawed, at least in Alchemy. Try driving a vehicle at moderate speed over a sim boundary on a connection with some lag. You'll probably fly off into space and then come back. Now turn off off "Velocity Interpolate Objects" in the Develop menu, and repeat. Now you stall for about a second when crossing a sim boundary. That shows what's really happening back at the servers. Is this a problem in the SL browser, too? (I'm on 64-bit Linux, so I can't run the SL browser easily.) Please check, so a bug report can be submitted. The extrapolation algorithm needs to be fixed. It needs clamping, or a low-pass filter, or it may even be differencing two positions from different sims and getting some huge velocity. Or it may be a straightforward math bug. Extrapolation from derivatives is always touchy. But those huge bogus velocities that rubber-band back to normal are a viewer-side problem. Sim-side screwups don't return to proper positions. See, for example, [1]. This is the kind of bug that doesn't show for devs working on high speed connections with low lag to the servers. (There are other server-side problems at sim crossings, most reported about ten years ago and not fixed. But this one is viewer-side and probably not hard to fix. [1] https://jira.secondlife.com/browse/SVC-22

    Physics problem EXIT:: SOLVED!

    Hello! The problem solved! Hello! Help please I have a problem. I'm trying to upload through the Firestorm the roof with an exit to the top, but I can not do physics. I tried a simplified cubic physics and the same model. But the passage is not formed. Applied rotation and scale. Prim / Convex hull don't work. I press the analyze and without, it does not help. It will be the roof of the moving object, so I think the analyze needs to be done. I will be grateful for any help! Thank you! P.S. When uploading with cubic physics, I do not even see the outlines of these cubes. Two months ago I uploaded another model and every cube could be seen.

    Uneven particle emission

    Hello! I have a question. My seaplane during the movement on water produces foam trace. But the emission goes by impulses, uneven. Help please make the trace smoother and more continuous! Thanks in advance! [PSYS_PART_MAX_AGE,5.00, PSYS_PART_FLAGS, 291, PSYS_PART_START_COLOR, <0.89900, 0.93776, 0.97216>, PSYS_PART_END_COLOR, <0.98706, 0.98044, 0.98756>, PSYS_PART_START_SCALE,<1.00750, 1.00752, 0.00000>, PSYS_PART_END_SCALE,<3.00369, 3.00974, 0.00000>, PSYS_SRC_PATTERN, 4, PSYS_SRC_BURST_RATE,0.00, PSYS_SRC_BURST_PART_COUNT,16, PSYS_SRC_BURST_RADIUS,0.00, PSYS_SRC_BURST_SPEED_MIN,1.00, PSYS_SRC_BURST_SPEED_MAX,1.00, PSYS_SRC_ANGLE_BEGIN, 0.00, PSYS_SRC_ANGLE_END, 0.00, PSYS_SRC_MAX_AGE, 0.0, PSYS_SRC_TEXTURE, "013bfffb-d1a5-04e9-d776-67d4ade3b99b", PSYS_PART_START_ALPHA, 1.00, PSYS_PART_END_ALPHA, 0.50]);

    Seaplane Script

    Hello! I'm trying for the first time to build a seaplane and here I got such a script. The script is excellent, the plane flies, but I can not add the ailerons, rudder, flaps. in the script I see these words are encountered. Please help add them. Thanks for any help. // :CATEGORY:Vehicles // :NAME:A_flight_script_with_more_realistic // :AUTHOR:Fritz Kakapo // :CREATED:2010-12-28 21:16:02.003 // :EDITED:2013-09-18 15:38:46 // :ID:8 // :NUM:12 // :REV:1.0 // :WORLD:Second Life // :DESCRIPTION: // My more elaborate airplane and bird scripts are also available free in world, but I suggest that this is the place to start. This scrpt is public domain "Copyleft!". My others are distributed under GNU Free Public Licenses, so only the ideas and short sections of script should be used in proprietary flight scripts, not long sections verbatim. Direct derivatives of the others should remain open source. // // I am anxious for others to use my new methods. I realize that most sl residents don't have strong backgrounds in physical analysis and modeling, numerical methods and real time programming, so I have tried to make this a script that others will be able to use as a starting place and adapt to their own requirements. One can look at the other scripts when ready to add more details and features. // :CODE: //==================================================================================================================================== // PIETENPOL AIR CAMPER FLIGHT SCRIPT MK1, with F. t. C.'s extensive changes // // Portions of this script are influenced by or based on work from Alex Linden, Cubey Terra, Eoin Widget, Kerian Bunin, Ronald Krugman // Script by Ezekiel Bailly 2005-2008 // New, more physical, flight behavior and other changes by Fritz t. Cat (Fritz Kakapo), April--May 2010. // Copyleft! //-------------------------------------------------------------------------------------------------------------------------------------- // Some of Fritz's changes: // Making it act like an airplane, maybe even like a Model A engined Air Camper, // but keeping it simple and as compatible as I can with what other sl flight scripters are doing. // Explaining how this new script relates to the simplified physics of airplanes. // Separated aileron and rudder controls. (The variables controlling the prim angles were already separate.) // Some improvements in response time. // Pulling loose wires. When I was a student, they used to send me up to trace signal cables and remove them if open. // Trying to make it easier for the next person (or robot?) who works on it. // Took out HUD control, for simplicity and efficiency. (Each listen puts a lot of load on the server, or used to at least.) // More concise, clearer and more efficient code. Tables of if statements could be replaced by formulas, for example. // Formatting. I prefer less blank lines, dashes instead. More consistent and standard indenting. // Deleting long obsolete comments, better variable names. // // Wikipedia says stall speed 35 mph, top 100 mph, rate of climb 500 ft/min (152 m/min). // It lists the Model as as 40 horsepower (30 kW), and the Camper loaded weight as 995 lb (452 kg). // Because of sl limitattions, I have modeled that at half speed. // The stall here is not realistic and is too slow, to keep it easy to fly and simple. // Too slow can be fixed by increasing LINEAR_FRICTION_TIMESCALE.z to decrease lift. // The stall is too gentle because of the approximation that the lift is proportional to the angle of incidence // times the square of the speed, which breaks down in a stall because of boundary layer separation. // It would be somewhat improved by making the linear friction increase (LINEAR_FRICTION_TIMESCALE decrease) with speed, // but this is a simple script, and it is easier to fly without that. // // Come the revolution, there'll be no more flying level, just the same, with the wings vertical! // Come the revolution, airplanes will turn toward the low wing, even when up side down! //====================================================================================================================================== // // // *AC control flags that we set later (It won't do logic in the initialization of variables.) integer gAngularControls; // *AC we may keep track of angular history for more responsive turns integer gOldAngularLevel; // Landing Gear Weight on Wheels-Collision Integer integer onground = TRUE; // THROTTLE (SPEED) Sensitive Declarations // Thrust variables: // thrust = forward * thrust_multiplier // Edit the maxThrottle and thrustMultiplier to determine max speed. integer forward = 0; // this changes when pilot uses throttle controls integer maxThrottle = 5; // Number of "clicks" in throttle control. Arbitrary, really. float thrustMultiplier = 11.; // Amount thrust increases per click. // // Lift and speed //float cruiseSpeed = 19.0; // knots, speed at which plane achieves full lift, knots! float speed = 0.; // speed in m/s float requested_timer_interval = 0.5; // timer call requested rate, it can be much slower integer sit = FALSE; // pilot sitting integer ignition = FALSE; // engine running, object physical // // Control Surface Motion Declarations string last_aileron_direction; string cur_aileron_direction; // string last_elevator_direction; string cur_elevator_direction; string last_rudder_direction; string cur_rudder_direction; // // CAMERA DECLARATIONS list drive_cam = [ CAMERA_ACTIVE, TRUE, CAMERA_BEHINDNESS_ANGLE, 0.0, CAMERA_BEHINDNESS_LAG, 0.6, CAMERA_DISTANCE, 10.0,//3.0, CAMERA_PITCH, 10.0, // CAMERA_FOCUS, CAMERA_FOCUS_LAG, 0.05, CAMERA_FOCUS_LOCKED, FALSE, CAMERA_FOCUS_THRESHOLD, 0.0, // CAMERA_POSITION, CAMERA_POSITION_LAG, 0.3, CAMERA_POSITION_LOCKED, FALSE, CAMERA_POSITION_THRESHOLD, 0.0, // CAMERA_FOCUS_OFFSET,<0,0,1>//<0,0,1> ]; integer camon = FALSE; integer camPermed; // key pilot = NULL_KEY; vector angular_motor; // vector global_vel; // velocity in the sim coordinate system vector local_vel; // velocity in the coordinate system pointed as the airplane integer thrustPercent = 0; float ANGULAR_MOTOR_TIMESCALE_0 = 4.; // strength of angular motor and angular damping float VERTICAL_ATTRACTION_TIMESCALE_0 = 17.; //-------------------------------------------------------------------------------------------------------------------------- integer HUDon = TRUE; //"Heads Up Display" variables string HUDtext = ""; vector HUDcolor; //========================================================================================================================== // init() { llListen(0, "", llGetOwner(), "" ); // llSetCameraEyeOffset( < -12, 0., 3.5 > ); // Position of camera, relative to parent. llSetCameraAtOffset( <0, 0, 1.9 > ); // Point to look at, relative to parent. // llSetSitText( "AirCamper" ); // Text that appears in pie menu when you sit // llCollisionSound( "", 0.0 ); // Remove the annoying thump sound from collisions // //SET VEHICLE PARAMETERS -- See www.secondlife.com/badgeo for an explanation llSetVehicleType( VEHICLE_TYPE_AIRPLANE ); // // angular deflection, fin and rudder llSetVehicleFloatParam( VEHICLE_ANGULAR_DEFLECTION_EFFICIENCY, 0.3 ); llSetVehicleFloatParam( VEHICLE_ANGULAR_DEFLECTION_TIMESCALE, 1.0 ); // // linear deflection llSetVehicleFloatParam( VEHICLE_LINEAR_DEFLECTION_EFFICIENCY, 0. ); // fuselage lift, both pitch and yaw cause lift llSetVehicleFloatParam( VEHICLE_LINEAR_DEFLECTION_TIMESCALE, 1000. ); // but we use LINEAR_FRICTION instead. // // angular friction llSetVehicleVectorParam( VEHICLE_ANGULAR_FRICTION_TIMESCALE, < 1.5, 3., 6. > ); // Caused by drag of extremities. // // linear friction llSetVehicleVectorParam( VEHICLE_LINEAR_FRICTION_TIMESCALE, < 37., 9., 0.15 > ); // This is the all-important trick to get the physics engine to handle the wing lift. // The x and y components contribute to parasite drag and to fuselage lift. // I have a note card explaining how the dependence of both lift and drag on pitch angle // are accurately and efficiently modeled by this parameter. // (To get a realistic depenence of lift and drag on speed, this parameter should decrease with speed.) // llSetVehicleVectorParam( VEHICLE_LINEAR_MOTOR_DIRECTION, <0, 0, 0> ); // Start with the Model A off. // llSetVehicleFloatParam( VEHICLE_LINEAR_MOTOR_TIMESCALE, 24. ); // loose control to feel like air llSetVehicleFloatParam( VEHICLE_LINEAR_MOTOR_DECAY_TIMESCALE, 10. ); // 20 times the timer interval. // If this is too long, it gets lost between sims more often. If it is too short, it falls in busy sims. // // angular motor llSetVehicleVectorParam( VEHICLE_ANGULAR_MOTOR_DIRECTION, <0, 0, 0> ); // control surfaces // llSetVehicleFloatParam( VEHICLE_ANGULAR_MOTOR_TIMESCALE, ANGULAR_MOTOR_TIMESCALE_0/5. ); // strength of " and angular damping // llSetVehicleFloatParam( VEHICLE_ANGULAR_MOTOR_DECAY_TIMESCALE, 3. ); // can be refreshed in timer or not // // hover llSetVehicleFloatParam( VEHICLE_HOVER_HEIGHT, 0. ); // useful for sea planes llSetVehicleFloatParam( VEHICLE_HOVER_EFFICIENCY, 0. ); // or for taking off from bare ground llSetVehicleFloatParam( VEHICLE_HOVER_TIMESCALE, 1000. ); // // vertical attractor // This tends to keep the airplane right side up. // More technically, it gives it dynamic stability against spiral dive. // In rl airplanes, this stability is provided largely by dihedral and by // the vertical distance between the aerodynamic center and the center of gravity. // This vertical attractor is less realistic but simpler than the dihedral approximation I use in Li'l Stinker. llSetVehicleFloatParam( VEHICLE_VERTICAL_ATTRACTION_EFFICIENCY, 0.1 ); llSetVehicleFloatParam( VEHICLE_VERTICAL_ATTRACTION_TIMESCALE, VERTICAL_ATTRACTION_TIMESCALE_0 ); // The /10. is to fix leaning over on ground, probably caused by the lack of a good sit animation. // // banking I don't know much what this does yet, so I am not using it. // Used in a straightforward way, it is partly responsible for the // un-airplanelike behavior of other sl airplanes. // It was obviously not introduced with airplanes in mind (at least not in a rational mind). // (I tried reversing it when up side down, but did not understand the result.) llSetVehicleFloatParam( VEHICLE_BANKING_EFFICIENCY, 0. ); llSetVehicleFloatParam( VEHICLE_BANKING_TIMESCALE, 1000. ); // // Falls half as fast, as though the space and speed were twice as big, // to deal with the small size of sims and the slowness of handoffs between sims. llSetVehicleFloatParam( VEHICLE_BUOYANCY, 0.5 ); // This and must be a constant (for any flight mode). // // default rotation of local frame llSetVehicleRotationParam( VEHICLE_REFERENCE_FRAME, <0,0,0,1> ); // A noop, I think. // // remove these flags llRemoveVehicleFlags( VEHICLE_FLAG_NO_DEFLECTION_UP | VEHICLE_FLAG_HOVER_WATER_ONLY | VEHICLE_FLAG_HOVER_TERRAIN_ONLY | VEHICLE_FLAG_HOVER_GLOBAL_HEIGHT | VEHICLE_FLAG_HOVER_UP_ONLY | VEHICLE_FLAG_LIMIT_MOTOR_UP | VEHICLE_FLAG_CAMERA_DECOUPLED); //----------------------------------------------------------------------------------------------------------------- // gAngularControls = CONTROL_RIGHT | CONTROL_LEFT | CONTROL_ROT_RIGHT | CONTROL_ROT_LEFT | CONTROL_BACK | CONTROL_FWD; // refreshHUD(); // llSay(0, "Cogito ergo sum." ); // "I think therefore I am.", Descartes. Variant on "Hello world!" // } // End init. // //----------------------------------------------------------------------------------------------------------------------------------- // refreshHUD() // from the VICE test airplane { if ( !sit ) { HUDtext="Take a copy, or buy for l$ 0. \n Full permissions, Revolutionary flight script. Public domain, no restrictions on use. Open the airplane as a box to get the documentation."; HUDcolor = < 0.2, 0.4, 1. >; jump GOTO; } // if ( !HUDon ) { HUDtext=""; jump GOTO; } // HUDtext = "Airpeed: " + (string)llFloor( (local_vel.x + 0.5) ) + " m/s" + " = "+(string)llFloor( ( local_vel.x*1.94 + 0.5 ) ) + " kts." + " = "+(string)llFloor( ( local_vel.x * 100./2.54/12./5280. *60.*60. + 0.5 ) ) + " mi./hr." + "\n " +" = "+(string)llFloor( local_vel.x *100. /2.54/12. /5280. *60.*60. * 2. + 0.5 ) + " scaled mi./hr." + "\n Rate of climb: " + " = " + (string)( llFloor( global_vel.z *100. /2.54 /12. *60. * 2. /10. + 0.5 ) * 10 ) + " scaled foot/min." + "\n " + "Throttle: " + (string)thrustPercent + "%"; // HUDcolor = < 1.0, 1.0, 1.0 >; // white when combat is disabled // @GOTO; // llSetText( "", HUDcolor, 1.0); //llSetText(HUDtext+"\n \n \n \n \n \n \n ", HUDcolor, 1.0); // llMessageLinked( 2, 333, (string)HUDcolor, NULL_KEY ); llMessageLinked( 2, 137, HUDtext+"\n \n \n ", NULL_KEY ); // } // End refreshHUD(). // //----------------------------------------------------------------------------------------------------------------------------------- // default { state_entry() { init(); } // //---------------------------------------------------------------------------------------------------------------------- on_rez(integer num) { llOwnerSay("Welcome to the Pietenpol Air Camper, type 'help' for the manual."); llOwnerSay("These controls can be typed in chat:"); llOwnerSay("Start, stop the engine: 'contact' , 'cutoff' "); //llOwnerSay("Seat position: 'seatup' 'seatdown' (You will need to Re-sit) "); llOwnerSay("'smoke' turns colored smoke off and on."); // llOwnerSay(" "); llOwnerSay( "The arrow keys or a, d work the ailerons."); llOwnerSay( "Shift arrow or shift a, d controls the rudder." ); llOwnerSay( "Up, down arrow or s, w controls the elevator, as usual." ); llOwnerSay( "Page up, down or e, c changes the throttle, as usual." ); llOwnerSay( "For a good turn, start the turn with the ailerons, then continue it with the rudder and elevator." ); llOwnerSay( "But the elevator and ailerons don't work at the same time as the rudder, sorry." ); llOwnerSay( "Use full throttle for take off." ); // init(); } // // DETECT AV SITTING/UNSITTING AND TAKE CONTROLS //----------------------------------------------------------------------------------------------------------------------------------- changed( integer change ) { // if ( change & CHANGED_LINK ) { pilot = llAvatarOnSitTarget(); // if ( pilot ) { if ( pilot != llGetOwner() ) //if ( FALSE ) { // only the owner can use this vehicle llWhisper(0, "Please take a copy of this airplane and fly your own copy. (If it is not set \"free to copy\" or \"for sale 0 l$\" contact the owner or the creator.) You aren't the owner -- only the owner can fly this plane."); llUnSit( pilot ); //llPushObject(pilot, <0,0,10>, ZERO_VECTOR, FALSE); } else { // Pilot sits on vehicle llRequestPermissions(pilot, PERMISSION_TAKE_CONTROLS | PERMISSION_TRIGGER_ANIMATION | PERMISSION_CONTROL_CAMERA); llSetTimerEvent( requested_timer_interval ); llMessageLinked( LINK_SET, 0, "seated", "" ); llMessageLinked( LINK_ALL_CHILDREN , 0, "CONTROLS_FLYING", NULL_KEY ); sit = TRUE; forward = 0; thrustPercent = 0; //llSetStatus(STATUS_PHYSICS, TRUE); // llSay(0, "Seated." ); } } // End pilot. // else if ( sit ) // When changed is called with flying and CHANGED_LINK, it is usually that the avatar is getting up. { // Pilot is getting up. // llSetStatus( STATUS_PHYSICS, FALSE ); llSetTimerEvent( 0 ); llMessageLinked( LINK_SET, 0, "unseated", "" ); llStopSound(); llReleaseControls(); // llClearCameraParams(); sit = FALSE; // llSay(0, "Unseated." ); // //llPushObject( pilot, <0,0, 10. >, ZERO_VECTOR, FALSE ); << This goes in the pilot seat script. //llSetStatus(STATUS_PHANTOM, TRUE); // It falls through the floor. //llSleep(4.0); //llSetStatus(STATUS_PHANTOM, FALSE ); // } // End sit. else llSay(0, "??" ); // for debugging } refreshHUD(); // } // End changed. // //------------------------------------------------------------------------------------------------------------------------ //CHECK PERMISSIONS AND TAKE CONTROLS run_time_permissions( integer perm ) { if ( perm & PERMISSION_TAKE_CONTROLS ) { llTakeControls( CONTROL_UP | CONTROL_DOWN | CONTROL_FWD | CONTROL_BACK | CONTROL_RIGHT | CONTROL_LEFT | CONTROL_ROT_RIGHT | CONTROL_ROT_LEFT // | CONTROL_ML_LBUTTON | CONTROL_LBUTTON , TRUE, FALSE); } } // End run_time_permissions. // //---------------------------------------------------------------------------------------- // listen( integer channel, string name, key id, string message ) { //Aircraft Start Watcher //if( (message == "contact") && (ignition == FALSE) ) if( message == "contact" ) { ignition = TRUE; llOwnerSay( "Starting Engine" ); llSetStatus( STATUS_PHYSICS, TRUE ); llMessageLinked( LINK_SET, 0, "start", NULL_KEY ); //thrustPercent = (integer) llFloor( (float)(forward+1) / (float)maxThrottle * 100. + 0.5 ); } //else if( ( message == "cutoff" ) && (ignition == TRUE) ) else if( message == "cutoff" ) { ignition = FALSE; llOwnerSay( "Engine Stop" ); llSetStatus( STATUS_PHYSICS, FALSE ); llMessageLinked( LINK_SET, 0, "stop", NULL_KEY ); } // else if( (message=="c") && (camon==FALSE) ) // No tested. { llSetCameraParams(drive_cam); camon=TRUE; llOwnerSay("Dynamic Camera on"); } else if( (message=="c") && (camon==TRUE) ) { llClearCameraParams(); camon=FALSE; llOwnerSay("Dynamic Camera off"); } else if( message == "smoke" ) // Added by FtC, because I can't feel the acceleration in the seat of my pants. { llMessageLinked( LINK_SET, 0, "smoke", NULL_KEY ); // (The smoke script starts and stops the smoke with the engine but remembers this command.) } } // End listen. // //---------------------------------------------------------------------------------------- // //FLIGHT CONTROLS control( key id, integer levels, integer edge ) { // OBC DECLARATIONS integer throttle_up = CONTROL_UP; integer throttle_down = CONTROL_DOWN; // // if ( (levels & (throttle_up+throttle_down)) && ignition ) { ////////////// THROTTLE INCREASE //////////////// if ( levels & throttle_up ) { if ( forward < maxThrottle-1 ) { forward += 1; } } // ////////////// THROTTLE DECREASE //////////////// else if ( levels & throttle_down ) { if ( forward > 0 ) { forward -= 1; } } llSetVehicleVectorParam( VEHICLE_LINEAR_MOTOR_DIRECTION, < forward * thrustMultiplier, 0, 0 > ); // // Calculate percent of max throttle and send to child prims as link message thrustPercent = (integer) llFloor( (float)(forward+1) / (float)maxThrottle * 100. + 0.5 ); // llMessageLinked( LINK_SET, thrustPercent, "throttle", "" ); // llOwnerSay( "Throttle at " + (string)thrustPercent + " %" ); // refreshHUD(); // llSleep( 0.15 ); // crappy kludge // This must be to avoid multiple clicks. } // // only change angular motor if the angular levels have changed // if ( (edge & gOldAngularLevel) || (levels & gAngularControls) ) { // This is not fly by wire or fly by light, so the controls work when the pilot is seated. // The fact that they still have some effect at zero speed is an unrealistic convenience. // By the standard simple approximation, both lift and control surface effectiveness are proportional // to the square of the speed. This is a compromise between that and flying ease. // angular_motor = <0,0,0>; cur_aileron_direction = "AILERON_NEUTRAL"; // Start neutral. cur_elevator_direction = "ELEVATOR_NEUTRAL"; cur_rudder_direction = "RUDDER_NEUTRAL"; // // ailerons if( levels & CONTROL_ROT_RIGHT ) { cur_aileron_direction = "AILERON_RIGHT"; angular_motor.x += 2.5 * (0.5 + speed/10.); } // if( levels & CONTROL_ROT_LEFT ) { cur_aileron_direction = "AILERON_LEFT"; angular_motor.x -= 2.5 * (0.5 + speed/10.); } // // rudder if( levels & CONTROL_RIGHT ) { cur_rudder_direction = "RUDDER_RIGHT"; angular_motor.z -= 1.3 * (0.7 + speed/10.); } // if( levels & CONTROL_LEFT ) { cur_rudder_direction = "RUDDER_LEFT"; angular_motor.z += 1.3 * (0.7 + speed/10.); } // // elevator if( levels & CONTROL_BACK ) { // add pitch component ==> causes vehicle lift nose (in local frame) cur_elevator_direction = "ELEVATOR_UP"; angular_motor.y -= 1.2 * (0.7 + speed/10.); } if( levels & CONTROL_FWD ) { cur_elevator_direction = "ELEVATOR_DOWN"; angular_motor.y += 1.2 * (0.7 + speed/10.); } llSetVehicleVectorParam( VEHICLE_ANGULAR_MOTOR_DIRECTION, angular_motor ); // // These are moved from timer to reduce the delay. // if ( cur_aileron_direction != last_aileron_direction ) { llMessageLinked( LINK_ALL_CHILDREN , 0, cur_aileron_direction, NULL_KEY ); last_aileron_direction = cur_aileron_direction; } if ( cur_elevator_direction != last_elevator_direction ) { llMessageLinked( LINK_ALL_CHILDREN , 0, cur_elevator_direction, NULL_KEY ); last_elevator_direction = cur_elevator_direction; } if ( cur_rudder_direction != last_rudder_direction ) { llMessageLinked( LINK_ALL_CHILDREN , 0, cur_rudder_direction, NULL_KEY ); last_rudder_direction = cur_rudder_direction; } // } // End angular controls. // store the angular levels history for the next control callback gOldAngularLevel = levels & gAngularControls; // } // End control. // //---------------------------------------------------------------------------------------------------------------------------- // LAND COLLISION FILTER FOR turn BEHAVIOR // Used now only for unrealistic convenience. // collision_start(integer num_detected) { //llOwnerSay( "Down." ); llSetVehicleFloatParam( VEHICLE_ANGULAR_MOTOR_TIMESCALE, ANGULAR_MOTOR_TIMESCALE_0/10. ); // More torque needed on ground. llSetVehicleFloatParam( VEHICLE_VERTICAL_ATTRACTION_TIMESCALE, VERTICAL_ATTRACTION_TIMESCALE_0 / 20. ); // The wheel keep us right side up. onground = TRUE; } collision_end(integer num_detected){ //llOwnerSay( "Up." ); //llSetVehicleFloatParam( VEHICLE_ANGULAR_MOTOR_TIMESCALE, ANGULAR_MOTOR_TIMESCALE_0 ); // Less torque needed in air. onground = FALSE; } land_collision_start(vector pos) { //llOwnerSay( "Down." ); llSetVehicleFloatParam( VEHICLE_ANGULAR_MOTOR_TIMESCALE, ANGULAR_MOTOR_TIMESCALE_0/10. ); // More torque needed on ground. llSetVehicleFloatParam( VEHICLE_VERTICAL_ATTRACTION_TIMESCALE, VERTICAL_ATTRACTION_TIMESCALE_0 / 20. ); // The wheel keep us right side up. onground = TRUE; } land_collision_end(vector pos) { //llOwnerSay( "Up." ); //llSetVehicleFloatParam( VEHICLE_ANGULAR_MOTOR_TIMESCALE, ANGULAR_MOTOR_TIMESCALE_0 ); // Less torque needed in air. onground = FALSE; } //---------------------------------------------------------------------------------------- //Aircraft Start Watcher // I took this out for efficiency and simplicity. //link_message( integer send, integer num, string msg, key id ) //{ // if(( msg == "contact" ) && (ignition == FALSE)) // { // ignition= TRUE; // llOwnerSay("Starting Engine"); // llSetStatus(STATUS_PHYSICS, TRUE); // } // else if(( msg == "cutoff" ) && (ignition == TRUE) ) // { // ignition = FALSE; // llOwnerSay("Engine Stop"); // llSetStatus(STATUS_PHYSICS, FALSE); // } //} //------------------------------------------------------------------------------------------------------------------------ // timer() { global_vel = llGetVel(); speed = llVecMag( global_vel ); float speed_kt = speed * 1.94384449; // Calculate speed in knots. local_vel = global_vel / llGetRot(); // to coordinate frame alligned with body // llSetVehicleVectorParam( VEHICLE_LINEAR_MOTOR_DIRECTION, < forward*thrustMultiplier, 0, 0 > ); // Keep engine running. llSetVehicleVectorParam( VEHICLE_ANGULAR_MOTOR_DIRECTION, angular_motor ); // Keeps friction constant. // if ( onground ) ; //llSetVehicleFloatParam( VEHICLE_VERTICAL_ATTRACTION_TIMESCALE, VERTICAL_ATTRACTION_TIMESCALE_0 / 10. ); else llSetVehicleFloatParam( VEHICLE_ANGULAR_MOTOR_TIMESCALE, ANGULAR_MOTOR_TIMESCALE_0 / (1.5 + 0.5*speed/10.) ); // More torque needed at higher speed. llSetVehicleFloatParam( VEHICLE_VERTICAL_ATTRACTION_TIMESCALE, VERTICAL_ATTRACTION_TIMESCALE_0 / (1.5 + 0.5*speed/10.) ); // Dihedral and wing sweep are more effective at higher speed. // refreshHUD(); // } // End timer. } // End default. // //======================================================================================= //
  5. NikolaiBunny

    Help about tank?

    I've been working on a T-55 model for the marketplace, using scripts from an example I found some time ago on VICE. https://marketplace.secondlife.com/p/T-55-Tank-VICE/14664468 This is the tank I've working on, I can't figure out how to make the cannon to be able to move vertically instead of just rotating. I've tried using Space Tech Advanced Turret Scripts but it seems not only not to work properly with this one for the first time since using it for long, but also making the barrel turn 90 degrees back, aiming at the sky and shooting so. Still could not manage how to make a single-person tank with this pack: https://marketplace.secondlife.com/p/Z3-VICE-Tank-Development-Kit/3723742 Seems to work properly but only with at least two crew members. Seems like the rotating turret/barrel scripts are obsolete because the way it turns, kinda laggy. Does anyone know how to make the tracks work properly? Like, to climb some stuff at least. Thank you.
  6. Hello! I need some help please! I'm trying to make a speedometer. Does anyone know what is the actual speed of the flight or walking avatar in the sl? I need to calibrate. I tried two speedometers at the same time they show different numbers. Thank you!

    Boat Wake Particles

    Hello! Help please with particles! I build a boat and I want to make such a wake on the water, which starts from the very nose and goes around the boats's hull. I saw it inworld so I believe its possible, I just dont know how. Particles does not go through the hull. They are slightly spraying forward and then circling the boat. But my particles go through without encountering obstacles. How can I simulate such particle wake? I have a particle script generator. I'm playing with sliders but I can not find the right one yet. Maybe someone has done this before and just tell the right parameter? This would greatly help. (Animation shows my particles going through obstacle)
  8. Hello! Please help to make a depth gauge for the boat. I have a script that shows the depth in the form of hovertext. But I need to turn it into an analog scale with an animated arrow texture or a fixed arrow with an animated scale for one mesh prim. I can provide this script. Please, not very expensive, I dont want this gauge to be more expensive than my boat. I can wait as long as you need. You can leave this script no mod! More details .: that's how I see it. One prim mesh with two - three faces. One face for the background, the second for the arrow, the third for the body (not necessary). We need to animate one texture, depending on the depth. Mesh and textures I do myself. Simple scale from 0 to 20. I also have full perm scripted analog compass and altimeter gauges, if that helps. Thank you very much! _------------+------------_ THE PROBLEM SOLVED!
  9. I found a useful little wheeled stool on Marketplace that's scripted as a vehicle. You can move it round with the arrow keys. Animations make it look like you're moving it with your feet. When you get off, it goes back to its home position. That ought to be a common feature for wheeled office chairs. Bar stools should let you rotate. Unfortunately, the script isn't very good. You can't turn in place. The turning radius is huge, about 5 meters. I wrote to the creator asking for a fix, or at least mod permissions so I can fix it. Good project for someone selling furniture to write a better script for this.
  10. There's something strange at the point where Robin Loop crosses from Juanita to Grote. Vehicles get knocked off the road at the region crossing. There are some nearby encroachments involving a private parking lot, but I can't see the problem even in wireframe mode. Go to http://maps.secondlife.com/secondlife/Juanita/150/15/85 and head southeast in the left lane of Robin Loop to see this. This may be new; I ride around Robin Loop regularly and haven't hit this before. I've tried different motorcycles and Firestorm versions, and it's the same every time. Logging out doesn't affect it. Even moving at very slow speed, the problem appears. It's a small bump, not a solid wall; going fast enough will get through it. That's the reverse of most region crossing problems. Sinking at a region crossing is a general problem and well understood, but this is something else. The last time I hit something like this, someone had put an invisible prim across a road.
  11. animats

    Suggest a road trip

    I've been working on making vehicle sim crossings work better. I can now drive fast around SL for two hours with few problems. So I'm looking for some good road trips. Any suggestions? I've driven around the Circuit de Corse. That's great. I've driven around Heterocera, which has some good spots. I've driven across parts of Sansara, most recently the region around the airport in Bradmoor. (In Sansara, I've enountered three bots, two AFKs, an abandoned hearse in the roadway, and no active users. The mainland is deader than I expected, even though 34,000 people are logged in right now.) I've explored Kama City. What am I missing?
  12. I first saw this when I started using an updating system for the scripts in my vehicle builds. However, this isn't specific to my scripts, it seems to be a generic vehicle behaviour. After replacing the script which manages the Vehicle settings, the vehicle seems to acquire a huge amount of mass causing the object to sink down when it next goes physical. The amount of pull is more than the vehicle engine can counter. Here's a way to reproduce the behaviour without using the scripts I've been writing.. 1) Take a simple boat such as BBX's Aqua which has modify permission 2) Go into edit linked on the driver's sitting position and take a copy of the Yacht Engine 1.0 script 3) Sit on that prim and observe that the boat drives normally (page up/down to change gears, up arrow to increase speed, down arrow to stop) 4) Stand up, go into edit linked, delete the Yacht Engine script 5) Put back the Yacht Engine script from the copy you took to inventory. Observe the chat output indicating that the engine script has initialised normally. 6) Sit on the driving position again. The boat will sink to the seabed and it either won't move at all or will move in directions other than the motor should be sending it. Larger vehicles will hardly move. Smaller vehicles like the Aqua can end up shooting off in unexpected directions contrary to the motor direction My question is - what's causing this? The boat is only set physical whilst it is being driven, so it's not physical between steps 4 and 5 Second question - what can a script do to fix this effect? Thanks in advance for answers... --Chorazin
  13. Targath

    At Home Indicator/Vehicle

    I think it would be cool to have an object scripted to place a low prim model vehicle (car, truck, motorcycle, boat) out near your home when you are within a chosen range (maybe even region) to indicate to others that you are home, and then have that same vehicle disappear when you leave range or go offline. Perhaps it could even be scripted to allow you to hide it when you wish to appear out even when in range. This could be handy on community or RP sims as it would indicate if you were "at home" or "away" for RP purposes.
  14. I've recently learned skills to texture and create graphics and designs for rp sims. I am looking for advice and for ideas for getting the word out there as well as pricing tips. I was very fortunate to win the best chief car at the most recent vehicle car show but I want to branch out and advertise more. Below are some examples of work ive done and I would like to know where the best demand is or what people look for. Do you see more US vehicles than European vehicles? I want to do this cheapest for my customers but still be able to cover my expenses.