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

#define ADMINACCESS ADMIN_CHAT

new jumpnum[33] = 0
new bool:dojump[33] = false

public plugin_init()
{
   register_plugin("MultiJump","1.1","twistedeuphoria")
   register_cvar("amx_maxjumps","1")
   register_cvar("amx_mjadminonly","0")
}

public client_putinserver(id)
{
   jumpnum[id] = 0
   dojump[id] = false
}

public client_disconnect(id)
{
   jumpnum[id] = 0
   dojump[id] = false
}

public client_PreThink(id)
{
   if(!is_user_alive(id)) return PLUGIN_CONTINUE
   if(get_cvar_num("amx_mjadminonly") && (!access(id,ADMINACCESS))) return PLUGIN_CONTINUE
   new nbut = get_user_button(id)
   new obut = get_user_oldbutton(id)
   if((nbut & IN_JUMP) && !(get_entity_flags(id) & FL_ONGROUND) && !(obut & IN_JUMP))
   {
      if(jumpnum[id] < get_cvar_num("amx_maxjumps"))
      {
         dojump[id] = true
         jumpnum[id]++
         return PLUGIN_CONTINUE
      }
   }
   if((nbut & IN_JUMP) && (get_entity_flags(id) & FL_ONGROUND))
   {
      jumpnum[id] = 0
      return PLUGIN_CONTINUE
   }
   return PLUGIN_CONTINUE
}

public client_PostThink(id)
{
   if(!is_user_alive(id)) return PLUGIN_CONTINUE
   if(get_cvar_num("amx_mjadminonly") && (!access(id,ADMINACCESS))) return PLUGIN_CONTINUE
   if(dojump[id] == true)
   {
      new Float:velocity[3]   
      entity_get_vector(id,EV_VEC_velocity,velocity)
      velocity[2] = random_float(265.0,285.0)
      entity_set_vector(id,EV_VEC_velocity,velocity)
      dojump[id] = false
      return PLUGIN_CONTINUE
   }
   return PLUGIN_CONTINUE
}

multijump.amxx