How to calculate the pos in front of player's vehicle?

[ysc3839]

I want to spawn a ramp in front of player's vehicle. Can somebody tell me how to calculate the pos? Thanks!

[DizzasTeR]

Also trying to figure this out but can't for some reason the object doesnt appear when i touch its pos.

[Thijn]

You can calculate the position in front of a player like so:

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local pos = pPlayer.Pos;
local rot = pPlayer.Angle, rad = rot * 3.14159265359 / 180.0;

local x = pos.x, y = pos.y;
local x2 = x + 1.0 * cos(rad) - 25.0 * sin(rad);
local y2 = y + 1.0 * sin(rad) + 25.0 * cos(rad);


[DizzasTeR]

You can calculate the position in front of a player like so:

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local pos = pPlayer.Pos;
local rot = pPlayer.Angle, rad = rot * 3.14159265359 / 180.0;

local x = pos.x, y = pos.y;
local x2 = x + 1.0 * cos(rad) - 25.0 * sin(rad);
local y2 = y + 1.0 * sin(rad) + 25.0 * cos(rad);


To be honest, understood nothing.... maybe my math skills suck.

[Thijn]

Might give a bit more information: clicky

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// [Ka]Juppi's func from http://forum.liberty-unleashed.co.uk/index.php/topic,398.0.html
// ported to fit your needs
function GetForwardPoint( pos, angle ) // you must pass an angle in degrees
{
local rad = angle * PI / 180; // we convert to radians
                local x = pos.x, y = pos.y;
local x2 = x + 1.0 * cos(rad) - 25.0 * sin(rad); // we calculate
local y2 = y + 1.0 * sin(rad) + 25.0 * cos(rad);
                return Vector( x2, y2, pos.z ); // return a vector
}
usage:

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player.Pos = GetForwardPoint( FindVehicle(0) /* example */, FindVehicle(0).EulerAngle.z );

[Sebastian]

Here is a ramp system made by Juppi, but for LU.
Take from there the needed info, but give credits for Juppi.

[ysc3839]

Might give a bit more information: clicky

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// [Ka]Juppi's func from http://forum.liberty-unleashed.co.uk/index.php/topic,398.0.html
// ported to fit your needs
function GetForwardPoint( pos, angle ) // you must pass an angle in degrees
{
local rad = angle * PI / 180; // we convert to radians
                local x = pos.x, y = pos.y;
local x2 = x + 1.0 * cos(rad) - 25.0 * sin(rad); // we calculate
local y2 = y + 1.0 * sin(rad) + 25.0 * cos(rad);
                return Vector( x2, y2, pos.z ); // return a vector
}
usage:

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player.Pos = GetForwardPoint( FindVehicle(0) /* example */, FindVehicle(0).EulerAngle.z );

But there's also something wrong...

[Gudio]

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function GetForwardPoint( pos, angle )
{
  local x = pos.x + 1.0 * cos(angle) - 25.0 * sin(angle)
  local y = pos.y + 1.0 * sin(angle) + 25.0 * cos(angle);
  return Vector( x, y, pos.z );
}
Don't pass player's angle to GetForwardPoint function while driving the vehicle, because only vehicle's angle is changed!
See my next post!

[ysc3839]

There is no point to pass an angle in degrees since 0.4 supports radians.

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function GetForwardPoint( pos, angle )
{
  local x = pos.x + 1.0 * cos(angle) - 25.0 * sin(angle)
  local y = pos.y + 1.0 * sin(angle) + 25.0 * cos(angle);
  return Vector( x, y, pos.z );
}
Don't pass player's angle to GetForwardPoint function while driving the vehicle, because only vehicle's angle is changed!
GetForwardPoint( vehicle.Pos, vehicle.EulerAngle.z );

I haven't tested it.

The same issue.

[Thijn]

How are you using it?

[Gudio]

Hey, I've written this function for you. Use it with updated squirrel module, because previous module returns vehicle's rotation with wrong order.

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function CVehicle::GetRadiansAngle()
{
local angle;
angle = ::asin( this.Rotation.z ) * 2;

return this.Rotation.w < 0 ? 3.14159 - angle : 6.28319 - angle;
}
Usage: GetForwardPoint( vehicle.Pos, vehicle.GetRadiansAngle() );
Hopefully it works well now.

[Sebastian]

Sounds good, Gudio.
We should be able to set the distance also. Add a parameter for that.

[Fuzzie]

Off:

Hey, I've written this function for you. Use it with updated squirrel module, because previous module returns vehicle's rotation with wrong order.

Please use the Server & Plugin Updates board so it would easier for us to be updated with any changes to the modules.

[Gudio]

@Fuzzie, I have no rights to create a topic there.
@sseebbyy, you can do that. Increase someting in GetForwardPoint function :>

[ysc3839]

Hey, I've written this function for you. Use it with updated squirrel module, because previous module returns vehicle's rotation with wrong order.

Code Select Expand

function CVehicle::GetRadiansAngle()
{
local angle;
angle = ::asin( this.Rotation.z ) * 2;

return this.Rotation.w < 0 ? 3.14159 - angle : 6.28319 - angle;
}
Usage: GetForwardPoint( vehicle.Pos, vehicle.GetRadiansAngle() );
Hopefully it works well now.

This is right:

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function GetRadiansAngle(Rotation)
{
local angle;
angle = ::asin( Rotation.z ) * -2;
return Rotation.w < 0 ? 3.14159 - angle : 6.28319 - angle;
}