[Exolent[jNr]]

Try this:

#include <amxmodx>
#include <engine>
#include <hamsandwich>

new gSetSpawnOrigin;
#define ShouldSetSpawnOrigin(%1) (gSetSpawnOrigin &   (1 << (%1 & 31)))
#define SetSpawnOrigin(%1)        gSetSpawnOrigin |=  (1 << (%1 & 31))
#define ClearSpawnOrigin(%1)      gSetSpawnOrigin &= ~(1 << (%1 & 31))

#define MAX_PLAYERS 32

new Float:gSpawnOrigin[MAX_PLAYERS + 1][3];

public plugin_init() {
    register_plugin("Respawn Position", "0.0.1", "Exolent");
    
    RegisterHam(Ham_Killed, "player", "FwdPlayerKilled");
    RegisterHam(Ham_Killed, "player", "FwdPlayerKilledPost", 1);
    RegisterHam(Ham_Spawn, "player", "FwdPlayerSpawnPost", 1);
}

public client_disconnect(id) {
    ClearSpawnOrigin(id);
}

public FwdPlayerKilled(victim, killer, shouldGib) {
    entity_get_vector(victim, EV_VEC_origin, gSpawnOrigin[victim]);
    SetSpawnOrigin(victim);
}

public FwdPlayerKilledPost(victim, killer, shouldGib) {
    entity_set_int(victim, EV_INT_deadflag, DEAD_RESPAWNABLE);
    entity_set_float(victim, EV_FL_nextthink, get_gametime());
}

public FwdPlayerSpawnPost(id) {
    if(ShouldSetSpawnOrigin(id) && is_user_alive(id)) {
        entity_set_vector(id, EV_VEC_origin, gSpawnOrigin[id]);
        
        ClearSpawnOrigin(id);
    }
}