AlliedModders - How to create circle

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- - How to create circle (https://forums.alliedmods.net/showthread.php?t=318829)

How to create circle

Is it possible to create a circle and detect whether the player pass through it if yes then how?

Re: How to create circle

Yes, check my CSBR mod. You'd have to compare the 2D length of the circle's radius against player.

Re: How to create circle

i was trying to achieve this way using an entity touch but seems entity hitboxes are not supportive of a circle :'(

Re: How to create circle

Quote:

Originally Posted by edon1337 (Post 2667914)

Yes, check my CSBR mod. You'd have to compare the 2D length of the circle's radius against player.

my problem is quite harder because the circle i want to create in multiple angles.

Re: How to create circle

Quote:

Originally Posted by Natsheh (Post 2667957)

my problem is quite harder because the circle i want to create has multiple angles.

Circles have angles?

Re: How to create circle

Lmao I didn't think this through typing it, I mean I want create a circle in multiple directions and check if the player is in it lets say it's more like player inside cylinder I want to give width to that circle/cylinder I'm using this equation to detect how far the player from the circle in different axis (PlayerOriginX - circleCenterX )^2 + floatsqroot((PlayerOriginY - circleCenterY)^2)) < Radius

I'll post what I have tried after I come back from work.

Re: How to create circle

Quote:

Originally Posted by Natsheh (Post 2667975)

First: A circle is 2D. A cylinder is 3D.
Maybe you're trying to know if a player is inside a sphere.
If that's so, the formula to know if something is inside that sphere is this one: (x - SphereCenterX)^2 + (y - SphereCenterY)^2 + (z - SphereCenterZ)^2 < Radius^2
If it's a circle, then it's: (x - CircleCenterX)^2 + (y - CircleCenterY)^2 < Radius^2

P.S: The only thing you got wrong in your formula was the radius that wasn't square rooted.
P.S.S: Of course, because Goldsource is a 3D game engine, your circle you create has a Z origin, so you should use the first formula in my comment.

Re: How to create circle

thanks for replying, actually i did add the sqroot to the equation infact here's the full code...

PHP Code:


		
			
/* Plugin generated by AMXX-Studio */

#include <amxmodx>
#include <amxmisc>
#include <engine>
#include <fakemeta>

#define PLUGIN "Health circle"
#define VERSION "1.0"
#define AUTHOR "Natsheh"

new g_sprite;

#define X 0
#define Y 1
#define Z 2

public plugin_precache() g_sprite = precache_model("sprites/laserbeam.spr");

public plugin_init() {
    register_plugin(PLUGIN, VERSION, AUTHOR)
    
    register_clcmd("amx_health_circle", "handler_command", ADMIN_KICK, "<rad> <width> <axis x> <axis y> <axis z>");
    register_clcmd("amx_delete_health_circle", "handler_command2", ADMIN_KICK, "remove health circle nearby!");
    register_think("health_circle", "brain_work");
}

public handler_command2(id, level, cid)
{
    if(!cmd_access(id, level, cid, 1)) return 1;
    
    new ent = -1, target_circle = 0, Float:wanted_distance = 250.0, Float:fOrigin[3], Float:fOrigin2[3], Float:z;
    pev(id, pev_origin, fOrigin);
    while( (ent = find_ent_by_class(ent, "health_circle")) > 0 )
    {
        pev(ent, pev_origin, fOrigin2);
        if( (z=get_distance_f(fOrigin, fOrigin2)) <= wanted_distance )
        {
            target_circle = ent; wanted_distance = z;
        }
    }
    
    if(target_circle > 0)
    {
        set_entity_flags(target_circle, FL_KILLME, true);
        console_print(id, "The health circle nearby was removed!");
    }
    else
    {
        console_print(id, "No health circles were found!");
    }
    return 1;
}

public handler_command(id, level, cid)
{
    if(!cmd_access(id, level, cid, 2)) return 1;
    
    new szRadius[5], szWidth[5], szAngle_X[5], szAngle_Y[5], szAngle_Z[5];
    read_argv(1, szRadius, charsmax(szRadius));
    read_argv(2, szWidth, charsmax(szWidth));
    read_argv(3, szAngle_X, charsmax(szAngle_X));
    read_argv(4, szAngle_Y, charsmax(szAngle_Y));
    read_argv(5, szAngle_Z, charsmax(szAngle_Z));
    
    remove_quotes(szRadius);
    remove_quotes(szWidth);
    remove_quotes(szAngle_X);
    remove_quotes(szAngle_Y);
    remove_quotes(szAngle_Z);
    
    new ent = create_entity("info_target");
    
    if(ent > 0)
    {
        entity_set_string(ent, EV_SZ_classname, "health_circle");
        
        new Float:fAngles[3];
        
        entity_get_vector(id, EV_VEC_origin, fAngles);
        entity_set_origin(ent, fAngles);
        
        entity_set_int(ent, EV_INT_iuser4, str_to_num(szWidth));
        entity_set_float(ent, EV_FL_fuser4, floatstr(szRadius));
        
        fAngles[0] = floatstr(szAngle_X);
        fAngles[1] = floatstr(szAngle_Y);
        fAngles[2] = floatstr(szAngle_Z);
        entity_set_vector(ent, EV_VEC_angles, fAngles);
        
        entity_set_int(ent, EV_INT_solid, SOLID_TRIGGER);
        entity_set_float(ent, EV_FL_nextthink, get_gametime() + 0.1);
        console_print(id, "Health circle has been created!");
    }
    else
    {
        console_print(id, "Failed to create the health circle!");
    }
    
    return 1;
}

public brain_work(id)
{
    static Float:fAngles[3], Float:fRadius[3], Float:fOrigin[3], Float:fWidth;
    pev(id, pev_angles, fAngles);
    pev(id, pev_origin, fOrigin)
    fWidth = float(pev(id, pev_iuser4));
    pev(id, pev_fuser4, fRadius[X]);
    fRadius[Y] = 0.0;
    fRadius[Z] = 0.0;
    
    static g_aPlayers[32], Float:fPos[3], pnum, i, Float:z1, Float:x1, Float:c1; c1 = fRadius[X];
    get_players(g_aPlayers, pnum, "ach");
    for(i = 0; i < pnum; i++)
    {
        pev(g_aPlayers[i], pev_origin, fPos);
        
        fPos[X] = fRadius[X] * floatcos(fAngles[Y],degrees) - floatsin(fAngles[Y],degrees) * fRadius[Y];
        fPos[Y] = fRadius[X] * floatsin(fAngles[Y],degrees) + floatcos(fAngles[Y],degrees) * fRadius[Y];
        fPos[Z] = 0.0
        xs_vec_copy(fPos, fRadius);
        
        fPos[X] = fRadius[X] * floatcos(fAngles[X],degrees) + fRadius[Y] * floatsin(fAngles[X],degrees);
        fPos[Y] = fRadius[Y];
        fPos[Z] = -fRadius[X] * floatsin(fAngles[X],degrees) + fRadius[Z] * floatcos(fAngles[X],degrees);
        xs_vec_copy(fPos, fRadius);
        
        /*x1=floatsqroot(floatpower((fPos[X] - fOrigin[X]),2.0) + floatpower((fPos[Y] - fOrigin[Y]),2.0));
        z1=floatsqroot(floatpower((fPos[X] - fOrigin[X]),2.0) + floatpower((fPos[Z] - fOrigin[Z]),2.0));
        c1=floatsqroot(floatpower((fPos[Y] - fOrigin[Y]),2.0) + floatpower((fPos[Z] - fOrigin[Z]),2.0));
        if(x1 < fRadius[X] && floatabs(fPos[Z] - fOrigin[Z]) <= fRadius[X] ||
        z1 < fRadius[Y] && floatabs(fPos[Y] - fOrigin[Y]) <= fRadius[Y] ||
        c1 < fRadius[X] && floatabs(fPos[X] - fOrigin[X]) <= fRadius[Z] )
        { 
            client_print(0, print_chat, "------> player in circle <---------- ");
        }*/
        
        client_print(0, print_chat, "--------------------- ");
        client_print(0, print_chat, "Z1: %.1f X1: %.1f C1: %.1f ", floatsqroot(z1), floatsqroot(x1), floatsqroot(c1));
        
        const iDivides = 32
        static Float:AngleMulScalar; AngleMulScalar = (360.0 / iDivides);
        static Float:fTemp[3], Float:fAngle[3], i,
        Float:fVector1[3] = { 0.0, 0.0, 0.0 }, Float:fVector2[3] = { 0.0, 0.0, 0.0 }, Float:fStart1[3], Float:fStart2[3];
        
        xs_vec_set(fAngle, 0.0, 0.0, 0.0);
        xs_vec_normalize(fRadius, fAngle);
        vector_to_angle(fAngle, fAngle);
        for(i = 0; i <= iDivides; i++)
        {
            if(i > 0)
            {
                xs_vec_copy(fVector1, fStart1);
                xs_vec_copy(fVector2, fStart2);
            }
            
            angle_vector(fAngle, ANGLEVECTOR_RIGHT, fTemp);
            xs_vec_mul_scalar(fTemp, floatabs(c1), fVector1);
            xs_vec_mul_scalar(fTemp, -floatabs(c1), fVector2);
            
            xs_vec_add(fOrigin, fVector1, fVector1);
            xs_vec_add(fOrigin, fVector2, fVector2);
            
            xs_vec_mul_scalar(fTemp, AngleMulScalar, fTemp);
            vector_to_angle(fTemp, fTemp);
            fAngle[X] += fTemp[X];
            fAngle[Y] += fTemp[Y];
            fAngle[Z] += fTemp[Z];
            if(i > 0)
            {
                createline(fStart1, fVector1)
                createline(fStart2, fVector2)
            }
        }
        
        client_print(0, print_chat, "Rad %.1f | %.1f | %.1f", fRadius[0], fRadius[1], fRadius[2]);
    }
    
    entity_set_float(id, EV_FL_nextthink, get_gametime() + 1.0);
}

Re: How to create circle

Quote:

Originally Posted by Natsheh (Post 2668015)

thanks for replying, actually i did add the sqroot to the equation infact here's the full code...

PHP Code:


		
			
/* Plugin generated by AMXX-Studio */



#include <amxmodx>

#include <amxmisc>

#include <engine>

#include <fakemeta>



#define PLUGIN "Health circle"

#define VERSION "1.0"

#define AUTHOR "Natsheh"



new g_sprite;



#define X 0

#define Y 1

#define Z 2



public plugin_precache() g_sprite = precache_model("sprites/laserbeam.spr");



public plugin_init() {

    register_plugin(PLUGIN, VERSION, AUTHOR)

    

    register_clcmd("amx_health_circle", "handler_command", ADMIN_KICK, "<rad> <width> <axis x> <axis y> <axis z>");

    register_clcmd("amx_delete_health_circle", "handler_command2", ADMIN_KICK, "remove health circle nearby!");

    register_think("health_circle", "brain_work");

}



public handler_command2(id, level, cid)

{

    if(!cmd_access(id, level, cid, 1)) return 1;

    

    new ent = -1, target_circle = 0, Float:wanted_distance = 250.0, Float:fOrigin[3], Float:fOrigin2[3], Float:z;

    pev(id, pev_origin, fOrigin);

    while( (ent = find_ent_by_class(ent, "health_circle")) > 0 )

    {

        pev(ent, pev_origin, fOrigin2);

        if( (z=get_distance_f(fOrigin, fOrigin2)) <= wanted_distance )

        {

            target_circle = ent; wanted_distance = z;

        }

    }

    

    if(target_circle > 0)

    {

        set_entity_flags(target_circle, FL_KILLME, true);

        console_print(id, "The health circle nearby was removed!");

    }

    else

    {

        console_print(id, "No health circles were found!");

    }

    return 1;

}



public handler_command(id, level, cid)

{

    if(!cmd_access(id, level, cid, 2)) return 1;

    

    new szRadius[5], szWidth[5], szAngle_X[5], szAngle_Y[5], szAngle_Z[5];

    read_argv(1, szRadius, charsmax(szRadius));

    read_argv(2, szWidth, charsmax(szWidth));

    read_argv(3, szAngle_X, charsmax(szAngle_X));

    read_argv(4, szAngle_Y, charsmax(szAngle_Y));

    read_argv(5, szAngle_Z, charsmax(szAngle_Z));

    

    remove_quotes(szRadius);

    remove_quotes(szWidth);

    remove_quotes(szAngle_X);

    remove_quotes(szAngle_Y);

    remove_quotes(szAngle_Z);

    

    new ent = create_entity("info_target");

    

    if(ent > 0)

    {

        entity_set_string(ent, EV_SZ_classname, "health_circle");

        

        new Float:fAngles[3];

        

        entity_get_vector(id, EV_VEC_origin, fAngles);

        entity_set_origin(ent, fAngles);

        

        entity_set_int(ent, EV_INT_iuser4, str_to_num(szWidth));

        entity_set_float(ent, EV_FL_fuser4, floatstr(szRadius));

        

        fAngles[0] = floatstr(szAngle_X);

        fAngles[1] = floatstr(szAngle_Y);

        fAngles[2] = floatstr(szAngle_Z);

        entity_set_vector(ent, EV_VEC_angles, fAngles);

        

        entity_set_int(ent, EV_INT_solid, SOLID_TRIGGER);

        entity_set_float(ent, EV_FL_nextthink, get_gametime() + 0.1);

        console_print(id, "Health circle has been created!");

    }

    else

    {

        console_print(id, "Failed to create the health circle!");

    }

    

    return 1;

}



public brain_work(id)

{

    static width, Float:fAngles[3], Float:fRadius[3], Float:fOrigin[3], Float:fWidth[3];

    pev(id, pev_angles, fAngles);

    pev(id, pev_origin, fOrigin)

    width = pev(id, pev_iuser4);

    pev(id, pev_fuser4, fRadius[0]);

    fRadius[1] = fRadius[0];

    fRadius[2] = fRadius[0];



    static g_aPlayers[32], Float:fPos[3], pnum, i, Float:z1, Float:x1, Float:c1;

    get_players(g_aPlayers, pnum, "ach");

    for(i = 0; i < pnum; i++)

    {

        pev(g_aPlayers[i], pev_origin, fPos);



        fRadius[X] *= floatcos(fAngles[X], degrees);

        fRadius[Y] *= floatsin(fAngles[Y], degrees);

        fRadius[Z] *= floatcos(fAngles[Z], degrees);

        fWidth[X] = float(width) * floatsin(fAngles[X], degrees);

        fWidth[Y] = float(width) * floatcos(fAngles[Y], degrees);

        fWidth[Z] = float(width) * floatsin(fAngles[Y], degrees);

        if(

        (z1=((fPos[X] - fOrigin[X]) ^ 2.0) + ((fPos[Z] - fOrigin[Z]) ^ 2.0)) - fWidth[X] <= floatpower(fRadius[X],2.0) + fWidth[X]  &&

        (x1=((fPos[X] - fOrigin[X]) ^ 2.0) + ((fPos[Y] - fOrigin[Y]) ^ 2.0)) - fWidth[Y] <= floatpower(fRadius[Y],2.0) + fWidth[Y] &&

        (c1=((fPos[Y] - fOrigin[Y]) ^ 2.0) + ((fPos[Z] - fOrigin[Z]) ^ 2.0)) - fWidth[Z] <= floatpower(fRadius[X],2.0) + fWidth[Z])

        { 

            client_print(0, print_chat, "------> player in circle <---------- ");

        }

        

        client_print(0, print_chat, "--------------------- ");

        client_print(0, print_chat, "Z1: %.1f X1: %.1f C1: %.1f ", z1, x1, c1);

        

        

        message_begin(MSG_ALL, SVC_TEMPENTITY)

        write_byte(TE_BEAMPOINTS)

        engfunc(EngFunc_WriteCoord, fOrigin[X] + fRadius[X])

        engfunc(EngFunc_WriteCoord, fOrigin[Y] + fRadius[Y])

        engfunc(EngFunc_WriteCoord, fOrigin[Z] + fRadius[Z])

        engfunc(EngFunc_WriteCoord, fOrigin[X] - fRadius[X])

        engfunc(EngFunc_WriteCoord, fOrigin[Y] - fRadius[Y])

        engfunc(EngFunc_WriteCoord, fOrigin[Z] - fRadius[Z])

        write_short(g_sprite) 

        write_byte(1) 

        write_byte(10) 

        write_byte(10) 

        write_byte(10) 

        write_byte(1) 

        write_byte(255)

        write_byte(0)

        write_byte(0)

        write_byte(255)

        write_byte(1)

        message_end()

        

        message_begin(MSG_ALL, SVC_TEMPENTITY)

        write_byte(TE_BEAMPOINTS)

        engfunc(EngFunc_WriteCoord, fOrigin[0] + fRadius[X])

        engfunc(EngFunc_WriteCoord, fOrigin[1] + fRadius[Z])

        engfunc(EngFunc_WriteCoord, fOrigin[2] + fRadius[Y])

        engfunc(EngFunc_WriteCoord, fOrigin[0] - fRadius[X])

        engfunc(EngFunc_WriteCoord, fOrigin[1] - fRadius[Z])

        engfunc(EngFunc_WriteCoord, fOrigin[2] - fRadius[Y])

        write_short(g_sprite) 

        write_byte(1) 

        write_byte(10) 

        write_byte(10) 

        write_byte(10) 

        write_byte(1) 

        write_byte(0)

        write_byte(255)

        write_byte(0)

        write_byte(255)

        write_byte(1)

        message_end()

        

        message_begin(MSG_ALL, SVC_TEMPENTITY)

        write_byte(TE_BEAMPOINTS)

        engfunc(EngFunc_WriteCoord, fOrigin[0] + fRadius[Y])

        engfunc(EngFunc_WriteCoord, fOrigin[1] + fRadius[X])

        engfunc(EngFunc_WriteCoord, fOrigin[2] + fRadius[Z])

        engfunc(EngFunc_WriteCoord, fOrigin[0] - fRadius[Y])

        engfunc(EngFunc_WriteCoord, fOrigin[1] - fRadius[X])

        engfunc(EngFunc_WriteCoord, fOrigin[2] - fRadius[Z])

        write_short(g_sprite) 

        write_byte(1) 

        write_byte(10) 

        write_byte(10) 

        write_byte(10) 

        write_byte(1) 

        write_byte(0)

        write_byte(0)

        write_byte(255)

        write_byte(255)

        write_byte(1)

        message_end()

        

        client_print(0, print_chat, "Rad %.1f | %.1f | %.1f", fRadius[0], fRadius[1], fRadius[2]);

    }

    

    entity_set_float(id, EV_FL_nextthink, get_gametime() + 1.0);

}

Humm.. what does that do? I tried to understand it but stopped in the middle of brain_work(id).

Re: How to create circle

You call it "health circe" but you are doing sphere math, so these should help:
https://www.amxmodx.org/api/engine/find_ent_in_sphere
https://www.amxmodx.org/api/engine/find_sphere_class