Баг с гравитацией на кс 1.6 jetpack

#include <amxmodx>
#include <cstrike>
#include <engine>

new const PLUGIN[] = "Jetpack Lite";
new const VERSION[] = "1.0";
new const AUTHOR[] = "Julien";

new const CVAR_JP_ACTIVE[] = "jp_active";
new const CVAR_JP_COST[] = "jp_cost";
new const CVAR_JP_MAX[] = "jp_max";
new const CVAR_JP_SPEED[] = "jp_speed";
new const CVAR_JP_TRAIL[] = "jp_trail";
new const CVAR_JP_DOD[] = "jp_dropondeath";

new JP_SOUND[] = "jetpack.wav";

new flame , smoke;
new bool:has_jp[33];
new bool:has_started;
new frame[33];
new current_jps;

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

register_clcmd("say /jetpack" , "ClCmd_BuyJP");
register_clcmd("jetpack" , "ClCmd_BuyJP");
register_clcmd("say /dropjp" , "drop_jp");
register_clcmd("dropjp" , "drop_jp");
register_clcmd("drop" , "drop_jp");
//register_clcmd("amx_givejp" , "ClCmd_GiveJP");

register_cvar(CVAR_JP_ACTIVE , "1");
register_cvar(CVAR_JP_COST , "30000");
register_cvar(CVAR_JP_MAX , "4");
register_cvar(CVAR_JP_SPEED , "500");
register_cvar(CVAR_JP_TRAIL , "2");
register_cvar(CVAR_JP_DOD , "1");

register_event("DeathMsg" , "Event_DeathMsg" , "a");
register_event("HLTV" , "did_not_start" , "a" , "1=0" , "2=0");

register_logevent("did_start" , 2 , "1=Round_Start");

register_touch("jetpack" , "player" , "mmm_touchy");

set_task(300.0 , "Advertise");
}

public Advertise() {
if(get_cvar_num(CVAR_JP_ACTIVE)) {
client_print(0 , print_chat, "* To buy a jetpack say /jetpack");
}
set_task(300.0 , "Advertise");
}

public did_not_start() {
has_started = false;
new ent = -1;
while((ent = find_ent_by_class(ent , "jetpack")) != 0) {
remove_entity(ent);
}
current_jps = 0;
new aPlayers[32] , iNum , i;
get_players(aPlayers , iNum);
for(i = 1; i <= iNum; i++) {
if(has_jp[aPlayers[i]]) {
current_jps++;
}
}
}

public did_start() {
has_started = true;
}

public client_connect(id) {
has_jp[id] = false;
}

public client_disconnect(id) {
has_jp[id] = false;
}

public plugin_precache() {
smoke = precache_model("sprites/lightsmoke.spr");
flame = precache_model("sprites/rjet1.spr"); // bm1, rjet1, stmbal1, WXplo1, xsmoke1, lightsmoke
precache_model("models/p_jetpack.mdl");
precache_model("models/w_egon.mdl");
precache_sound(JP_SOUND);
}

public client_PreThink(id) {
if(!get_cvar_num(CVAR_JP_ACTIVE)) {
return PLUGIN_CONTINUE;
}
if(!is_user_connected(id) || !is_user_alive(id)) {
return PLUGIN_CONTINUE;
}
if(!(get_user_button(id) & IN_JUMP)) {
return PLUGIN_CONTINUE;
}
if(!has_started || !has_jp[id]) {
return PLUGIN_CONTINUE;
}
new Float:fAim[3] , Float:fVelocity[3];
VelocityByAim(id , get_cvar_num(CVAR_JP_SPEED) , fAim);

fVelocity[0] = fAim[0];
fVelocity[1] = fAim[1];
fVelocity[2] = fAim[2];

set_user_velocity(id , fVelocity);

entity_set_int(id , EV_INT_gaitsequence , 6);

emit_sound(id , CHAN_VOICE , JP_SOUND , 1.0 , ATTN_NORM , 0 , PITCH_NORM);

if(frame[id] >= 3) {
frame[id] = 0;
if(get_cvar_num(CVAR_JP_TRAIL)) {
smoke_effect(id);
}
entity_set_string(id , EV_SZ_weaponmodel , "models/p_jetpack.mdl");
}
frame[id]++;

return PLUGIN_CONTINUE;
}

public smoke_effect(id) {
new origin[3];
get_user_origin(id, origin, 0);
origin[2] = origin[2] - 10;

message_begin(MSG_BROADCAST, SVC_TEMPENTITY);
write_byte(17);
write_coord(origin[0]);
write_coord(origin[1]);
write_coord(origin[2]);
write_short((get_cvar_num(CVAR_JP_TRAIL) == 1) ? smoke : flame);
write_byte(10);
write_byte(115);
message_end();
}

public Event_DeathMsg() {
if(get_cvar_num(CVAR_JP_DOD)) {
drop_jp(read_data(2));
} else {
has_jp[read_data(2)] = false;
}
}

public ClCmd_BuyJP(id) {
if(!get_cvar_num(CVAR_JP_ACTIVE)) {
client_print(id , print_chat , "[AMXX] Sorry, jetpacks are currently disabled");
return PLUGIN_HANDLED;
}

if(!is_user_alive(id)) {
client_print(id , print_chat , "[AMXX] You cannot buy a jetpack when you are dead!");
return PLUGIN_HANDLED;
}

if(has_jp[id]) {
client_print(id , print_chat , "[AMXX] You already have a jetpack!");
return PLUGIN_HANDLED;
}

if(current_jps >= get_cvar_num(CVAR_JP_MAX)) {
client_print(id , print_chat , "[AMXX] There's too many jetpacks out already!");
return PLUGIN_HANDLED;
}

new iMoney = cs_get_user_money(id) - get_cvar_num(CVAR_JP_COST);

if(iMoney < 0) {
client_print(id , print_chat , "[AMXX] You do not have enough money for a jetpack! Cost: $%d" , get_cvar_num(CVAR_JP_COST));
return PLUGIN_HANDLED;
}

cs_set_user_money(id , iMoney , 1);

has_jp[id] = true;

client_print(id , print_chat , "[AMXX] To use the jetpack hold jump and aim in the direction you wish to move in");

emit_sound(id , CHAN_VOICE , "items/gunpickup2.wav" , 1.0 , ATTN_NORM , 0 , PITCH_NORM);

current_jps++;

return PLUGIN_HANDLED;
}

public drop_jp(id) {
if(!has_jp[id]) return PLUGIN_HANDLED;

new Float:fAim[3] , Float:fOrigin[3];
VelocityByAim(id , 64 , fAim);
entity_get_vector(id , EV_VEC_origin , fOrigin);

fOrigin[0] += fAim[0];
fOrigin[1] += fAim[1];

new jp = create_entity("info_target");

entity_set_string(jp , EV_SZ_classname , "jetpack");
entity_set_model(jp , "models/p_jetpack.mdl");

entity_set_size(jp , Float:{-16.0,-16.0,-16.0} , Float:{16.0,16.0,16.0});

entity_set_int(jp , EV_INT_solid , 1);
entity_set_int(jp , EV_INT_movetype , 6);

entity_set_vector(jp , EV_VEC_origin , fOrigin);

has_jp[id] = false;

return PLUGIN_HANDLED;
}

public mmm_touchy(jp , id) {
if(!is_user_alive(id)) return PLUGIN_CONTINUE;
if(has_jp[id]) return PLUGIN_CONTINUE;

has_jp[id] = true;

emit_sound(id , CHAN_VOICE , "items/gunpickup2.wav" , 1.0 , ATTN_NORM , 0 , PITCH_NORM);

remove_entity(jp);

return PLUGIN_CONTINUE;
}