How to get coordinates of point to the right of vehicle?

How to get coordinates of point to the right of vehicle? - Printable Version

+- SA-MP Forums Archive (https://sampforum.blast.hk)
+-- Forum: SA-MP Scripting and Plugins (https://sampforum.blast.hk/forumdisplay.php?fid=8)
+--- Forum: Scripting Help (https://sampforum.blast.hk/forumdisplay.php?fid=12)
+--- Thread: How to get coordinates of point to the right of vehicle? (/showthread.php?tid=338014)

[SOLVED] How to get coordinates of point to the right of vehicle? - gangsta15 - 28.04.2012

It is hard to explain, I've prepared some screenshotes. So, it is a geometric question. Help me please with solution of this problem. How can I get coordinates of the point to the right of vehicle, based on vehicle coordinates and other information?
P.S. Vehicle ID - 588.

Re: How to get coordinates of point to the right of vehicle? - ViniBorn - 28.04.2012

GetVehicleZAngle

Re: How to get coordinates of point to the right of vehicle? - gangsta15 - 28.04.2012

Quote:

Originally Posted by Viniborn

GetVehicleZAngle

It returns vehicle Z rotation angle, but how can I get right point coordinates?

Re: How to get coordinates of point to the right of vehicle? - Niko_boy - 28.04.2012

may be unsure though
u can use combination of these functions IsPlayerInVehicle GetPlayerPos then Get x y coordinate and use IsPlayerinrangeofpoint

Re: How to get coordinates of point to the right of vehicle? - ViniBorn - 28.04.2012

The first step is to obtain the rotation.
The second is the position (X, Y, Z).

So trigonometry. Pythagoras, etc.

Re: How to get coordinates of point to the right of vehicle? - gangsta15 - 28.04.2012

Quote:

Originally Posted by Niko_boy

may be unsure though
u can use combination of these functions IsPlayerInVehicle GetPlayerPos then Get x y coordinate and use IsPlayerinrangeofpoint

There is no solution in your answer) I need coordinates to create a pickup. So, if it is 0, 90, 180, 270 z angle, it is easy to get point coordinates, but I will deal with other angles.

Quote:

Originally Posted by Viniborn

So trigonometry. Pythagoras, etc.

This is what I'm talking about, there must be geometric solution, but I have no idea how to do this, therefore I posted this question.

AW: How to get coordinates of point to the right of vehicle? - Nero_3D - 28.04.2012

Here an easy stock

pawn Код:

stock GetXYInDirection(& Float: X, & Float: Y, Float: Angle, Float: distance = 1.0) {
    X -= (floatsin(Angle, degrees) * distance);
    Y += (floatcos(Angle, degrees) * distance);
}

And how to use it in your example

pawn Код:

new
    Float: X,
    Float: Y,
    Float: Z,
    Float: A
;
GetVehiclePos(vehicleid, X, Y, Z);
GetVehicleZAngle(vehicleid, A);
GetXYInDirection(X, Y, (A - 90.0), 5.0); // (angle - 90) is the angle to the right

Re: AW: How to get coordinates of point to the right of vehicle? - gangsta15 - 28.04.2012

Quote:

Originally Posted by Nero_3D

Here an easy stock
...

Thank you! Will test it.

Re: How to get coordinates of point to the right of vehicle? - gangsta15 - 28.04.2012

Thanks again, it works fine! But can you give me theorems on which this solution is based on?

AW: How to get coordinates of point to the right of vehicle? - Nero_3D - 28.04.2012

On the unit circle

To get to the correct x we need cos and for y we need sin

Код:

x = cos(angle)
y = sin(angle)

The only thing we need to consider in sa-mp is that 0 degrees is 90 degrees in the unit circle, also we use

Код:

x = cos(angle + 90)
y = sin(angle + 90)

Another notation for that would be

Код:

x = -sin(angle)
y = cos(angle)

In the end we just add these cordinates to our original position

Код:

x = x - sin(angle)
y = y + cos(angle)