[hellmonja]

I'm trying to do a Dodge Plugin where if you double-tap either left or right the player 'skips' or side-steps a short distance.

I've done the double-tap part but I don't know how to move the player. I'm not very knowledgeable in vectors and coordinates or using the xs module so I also hope of learning a thing or 2...

[HamletEagle]

PHP Code:

#include <amxmodx>
#include <fakemeta>
#include <xs>

public plugin_init()
{
    register_clcmd("dodge", "ClientCommand_Dodge")
}

public ClientCommand_Dodge(id)
{
    new Float:PlayerAngles[3], Float:PlayerVelocity[3]
    pev(id, pev_angles, PlayerAngles)
    angle_vector(PlayerAngles, ANGLEVECTOR_RIGHT, PlayerVelocity)
    xs_vec_mul_scalar(PlayerVelocity, 800.0, PlayerVelocity)
    set_pev(id, pev_velocity, PlayerVelocity)
} 


Example with always going to the right.

[hellmonja]

Originally Posted by HamletEagle [php]

OMG, it worked like magic! May I ask how this works exactly? A lot of these codes I don't know what they do like "xs_vec_mul_scalar"...

[HamletEagle]

I forgot to say, in order to move left you need to multiply the vector by -1.0(xs_vec_mul_scalar).
It's not hard, just look in xs.inc

PHP Code:

    XS_LIBFUNC_ATTRIB xs_vec_mul_scalar(const Float:vec[], Float:scalar, Float:out[])
    {
        out[0] = vec[0] * scalar;
        out[1] = vec[1] * scalar;
        out[2] = vec[2] * scalar;
    } 


It simply multiples each component of the array(vector) by a given value.

[hellmonja]

Okay so...

PHP Code:

 pev(id, pev_angles, PlayerAngles) 


This records the players current angles?

PHP Code:

angle_vector(PlayerAngles, ANGLEVECTOR_RIGHT, PlayerVelocity) 


Tells plugin which direction is right based on player's angle? Also I noticed there is no ANGLEVECTOR_LEFT. I just replaced '800.0' with '-800.0' and it worked. Like you said, multiply by -1. =)

PHP Code:

set_pev(id, pev_velocity, PlayerVelocity) 


So this one does the actual moving...

[HamletEagle]

I suggest you to read this 2 topics, should answer all your questions.
https://forums.alliedmods.net/showthread.php?t=91474
https://forums.alliedmods.net/showthread.php?t=262138

About velocity: to move you need a direction and a speed. velocity is a vector quantity that gives you both the direction and the speed.

PHP Code:

xs_vec_mul_scalar(PlayerVelocity, 800.0, PlayerVelocity) 


This controls the speed at which we are moving, it doesn't change the direction. As I said, to change direction you need to multiply by -1(so from right to left).
If you want to go faster use a scalar bigger than 800, to mover slower use a lower value(obviously).

Yes, setting pev_velocity moves the player, because you are telling the game where you want to move and how fast.

[hellmonja]

Thank you, sensei, as well as for the links. I will read them to finally learn about vectors.
The dodge mechanic is working perfectly now. I just had to reduce 800.0 to 300.0.
Once again, my deepest gratitude...