Hook.sma

/* Plugin generated by AMXX-Studio */

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


#define PLUGIN "Hook"
#define VERSION "1.0"
#define AUTHOR "Yan"

new beampoint


public plugin_init() {
    register_plugin(PLUGIN, VERSION, PLUGIN);

    RegisterHam(Ham_Weapon_PrimaryAttack,"weapon_usp", "PlayerAttack");
    return PLUGIN_CONTINUE;
}


public plugin_precache()
{
	beampoint = precache_model("sprites/laserbeam.spr")
}


public PlayerAttack(this, idcaller, idactivator, use_type, Float:value)
{
    console_print(0,"Shooting lasers %d %d",idcaller, idactivator);
    shoot_laser(idcaller);
}

public shoot_laser(ent)
{
    // We get the origin of the entity.
    new Float:origin[3]
    pev(ent, pev_origin, origin)
    
    // We want to trace down to the floor, if it's there.
    new Float:traceto[3]
    traceto[0] = origin[0]
    traceto[1] = origin[1]
    traceto[2] = origin[2] - 10.0
    
    new trace = 0
    // Draw the traceline. We're assuming the object is resting on the floor.
    engfunc(EngFunc_TraceLine, origin, traceto, IGNORE_MONSTERS, ent, trace)
    
    new Float:fraction
    get_tr2(trace, TR_flFraction, fraction)
    // If we didn't hit anything, then we won't get a valid TR_vecPlaneNormal.
    if (fraction == 1.0) return
    
    new Float:normal[3]
    get_tr2(trace, TR_vecPlaneNormal, normal)
    // We'll multiply the the normal vector by a scalar to make it longer.
    normal[0] *= 400.0 // Mathematically, we multiplied the length of the vector by 400*(3)^(1/2),
    normal[1] *= 400.0 // or, in words, four hundred times root three.
    normal[2] *= 400.0
    
    // To get the endpoint, we add the normal vector and the origin.
    new Float:endpoint[3]
    endpoint[0] = origin[0] + normal[0]
    endpoint[1] = origin[1] + normal[1]
    endpoint[2] = origin[2] + normal[2]
    
    // Finally, we draw from the laser!
    draw_laser(origin, endpoint, 100) // Make it stay for 10 seconds. Not a typo; staytime is in 10ths of a second.
}

public draw_laser(Float:start[3], Float:end[3], staytime)
{                    
    message_begin(MSG_ALL, SVC_TEMPENTITY)
    write_byte(TE_BEAMPOINTS)
    engfunc(EngFunc_WriteCoord, start[0])
    engfunc(EngFunc_WriteCoord, start[1])
    engfunc(EngFunc_WriteCoord, start[2])
    engfunc(EngFunc_WriteCoord, end[0])
    engfunc(EngFunc_WriteCoord, end[1])
    engfunc(EngFunc_WriteCoord, end[2])
    write_short(beampoint)
    write_byte(0)
    write_byte(0)
    write_byte(staytime) // In tenths of a second.
    write_byte(10)
    write_byte(1)
    write_byte(255) // Red
    write_byte(0) // Green
    write_byte(0) // Blue
    write_byte(127)
    write_byte(1)
    message_end()
} 


/* AMXX-Studio Notes - DO NOT MODIFY BELOW HERE
*{\\ rtf1\\ ansi\\ ansicpg1252\\ deff0\\ deflang1033{\\ fonttbl{\\ f0\\ fnil Tahoma;}}\n\\ viewkind4\\ uc1\\ pard\\ f0\\ fs16 \n\\ par }
*/