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//==============================================================================
// base_item.qc -- top-level item pickups
//==============================================================================

//======================================================================
// constants
//======================================================================

const float ITEM_SPAWNSILENT = 32;      // item spawnflags
const float ITEM_SPAWNED = 64;
const float ITEM_SUSPENDED = 128;
const float ITEM_RESPAWNDM = 16384;
const float ITEM_DONTDROP = 8388608;

const float ITEM_ALPHA_WAITSPAWN = 0.1; // alpha values (respawn feedback)
const float ITEM_ALPHA_NEARSPAWN = 0.25;
const float ITEM_ALPHA_OPAQUE = 1.0;

const string ITEM_SOUND_SPAWN = "items/item_respawn_q3.wav";

//======================================================================
// fields
//======================================================================

// Supa, Quoth respawning items support
//
// Respawn item like in DM if 'ritem' TRUE, override respawn time
// with 'respawndelay' if set, inc 'cnt' with each respawn and if
// 'respawncount' is set we'll remove the item if cnt > respawncount
// remember that SUB_Regen is already set on every item that can
// respawn, all we need to do is give a nextthink time in order
// to trigger it

.float ritem;                           // legacy SP item respawn flag
.float respawndelay;                    // legacy SP respawn delay
.float respawncount;                    // legacy SP respawn limit

.vector particles_offset;

//======================================================================
// forward declarations
//======================================================================

void(entity actor) base_item_drop_stuff;
float(entity item, float delay_sp, float delay_dm) base_item_check_respawn;
void() base_item_think_respawn;
void() base_item_think_nearspawn;
void() base_item_think_rhull;
void() base_item_think_place;
void() base_item_use_delayspawn;
void(entity e) base_item_init;
strip void() base_item;

//------------------------------------------------------------------------------

//----------------------------------------------------------------------
// class base_item: base_mapentity
// {
        //==============================================================
        // Static Helper Functions
        //==============================================================

        //--------------------------------------------------------------
        // DropStuff -- dumptruck_ds
        // set drops_item on a monster to a number:
        //
        // 1 = Silver Key
        // 2 = Gold Key
        // 3 = Health Vial
        // 4 = Armor Shard
        // 5 = Health Vial & Armor Shard
        // 6 = random combination of 3 Vials and/or Shards
        //
        // TODO CEV this should probably be outside of base_item
        //--------------------------------------------------------------
        void(entity actor) base_item_drop_stuff =
        {
                switch (actor.drop_item)
                {
                        case 0:
                                // drop nothing
                                break;
                        case 1:
                                item_key1_drop (self);
                                break;
                        case 2:
                                item_key2_drop (self);
                                break;
                        case 3:
                                item_health_vial_drop (self);
                                break;
                        case 4:
                                item_armor_shard_drop (self);
                                break;
                        case 5:
                                item_health_vial_drop (self);
                                item_armor_shard_drop (self);
                                break;
                        case 6:
                                local float rand_drop = rint(random() * 3);
                                if (rand_drop == 1)
                                {
                                        item_armor_shard_drop (self);
                                        item_health_vial_drop (self);
                                        item_health_vial_drop (self);
                                }
                                else if (rand_drop == 2)
                                {
                                        item_armor_shard_drop (self);
                                        item_armor_shard_drop (self);
                                        item_health_vial_drop (self);
                                }
                                else if (rand_drop == 0)
                                {
                                        item_armor_shard_drop (self);
                                        item_armor_shard_drop (self);
                                        item_armor_shard_drop (self);
                                }
                                else
                                {
                                        item_health_vial_drop (self);
                                        item_health_vial_drop (self);
                                        item_health_vial_drop (self);
                                }
                                break;
                        default:
                                dprint (sprintf("base_item_drop_stuff: "
                                        "unhandled drop_item %g\n",
                                        actor.drop_item));
                }
        };

        //==============================================================
        // Subs
        //==============================================================

        //--------------------------------------------------------------
        // CheckItemRespawn -- was in items.qc
        //--------------------------------------------------------------
        float(entity item, float delay_sp, float delay_dm)
                base_item_check_respawn =
        {
                // DM rules first
                if (deathmatch == 1)
                {
                        if (delay_dm > 5.0)
                        {
                                item.alpha = ITEM_ALPHA_WAITSPAWN;
                                item.think = base_item_think_nearspawn;
                                item.nextthink = time + delay_dm - 5.0;
                        }
                        else
                        {
                                item.alpha = ITEM_ALPHA_NEARSPAWN;
                                item.nextthink = time + delay_dm;
                        }

                        item.nextthink = time + delay_dm;
                        setmodel (item, item.mdl);
                        return TRUE;
                }

                if (deathmatch)
                {
                        dprint (sprintf("base_item_check_respawn: unhandled "
                                "deathmatch state %f\n", deathmatch));
                        return FALSE;
                }

                // Supa, SP respawning items support
                // respawn item if true, otherwise abort
                if (!item.ritem)
                        return FALSE;

                // inc before check to account for zero indexing
                item.cnt = item.cnt + 1;

                // limited respawns
                if (item.respawncount && item.respawncount < item.cnt)
                        return FALSE;

                // okay, we're clear to set up a respawn
                if (item.respawndelay)
                {
                        // custom respawn delay
                        if (item.respawndelay > 5.0)
                        {
                                item.alpha = ITEM_ALPHA_WAITSPAWN;
                                item.think = base_item_think_nearspawn;
                                item.nextthink = time + item.respawndelay - 5.0;
                        }
                        else
                        {
                                item.alpha = ITEM_ALPHA_NEARSPAWN;
                                item.nextthink = time + item.respawndelay;
                        }
                }
                else
                {
                        if (delay_sp > 5.0)
                        {
                                item.alpha = ITEM_ALPHA_WAITSPAWN;
                                item.think = base_item_think_nearspawn;
                                item.nextthink = time + delay_sp - 5.0;
                        }
                        else
                        {
                                item.alpha = ITEM_ALPHA_NEARSPAWN;
                                item.nextthink = time + delay_sp;
                        }
                }

                setmodel (item, item.mdl);
                return TRUE;
        };

        //==============================================================
        // Interfacing
        //==============================================================

        //--------------------------------------------------------------
        // SUB_Regen -- was in items.qc
        //--------------------------------------------------------------
        void() base_item_think_respawn =
        {
                // restore original model
                self.model = self.mdl;
                self.alpha = ITEM_ALPHA_OPAQUE;

                // allow it to be touched again
                self.solid = SOLID_TRIGGER;

                // new respawning effects -- CEV
                sound (self, CHAN_VOICE, ITEM_SOUND_SPAWN, 1, ATTN_NORM);

                setorigin (self, self.origin);
                setsize (self, self.pos1, self.pos2);
        };

        //--------------------------------------------------------------
        void() base_item_think_nearspawn =
        {
                // bump alpha when 5s remain -- CEV
                self.alpha = ITEM_ALPHA_NEARSPAWN;
                self.think = base_item_think_respawn;
                self.nextthink = time + 5.0;
        };

        //--------------------------------------------------------------
        // RefreshHull -- Supa, restore old hull and lock movement
        //--------------------------------------------------------------
        void() base_item_think_rhull =
        {
                dprint ("base_item_think_rhull: fix for bboxes\n");

                // dumptruck_ds -- fix for bounding boxes
                if (self.pos1 && self.pos2)
                        setsize (self, self.pos1, self.pos2);
                else
                        setsize (self, '0 0 0', '32 32 56');

                self.movetype = MOVETYPE_NONE;
                self.velocity = '0 0 0';
        };

        //--------------------------------------------------------------
        // PlaceItem -- plants the object on the floor
        //--------------------------------------------------------------
        void() base_item_think_place =
        {
                self.alpha = ITEM_ALPHA_OPAQUE;
                self.solid = SOLID_TRIGGER;
                self.velocity = '0 0 0';
                self.think = base_item_think_respawn;

                // make extra wide
                self.flags = FL_ITEM;

                // so it can be restored on respawn
                self.mdl = self.model;

                if (!self.pos1 && !self.pos2)
                {
                        self.pos1 = '0 0 0';
                        self.pos2 = '32 32 56';
                }
                setsize (self, self.pos1, self.pos2);

                if (self.spawnflags & ITEM_SUSPENDED)
                {
                        // ijed Don't drop spawnflag
                        self.movetype = MOVETYPE_FLY;
                }
                else
                {
                        // The following hack for item_health was inherited
                        // from the RMQ code, and was here when the
                        // func_mapjamx maps were created. It would have been
                        // nice to remove this code entirely, because progs_dump
                        // doesn't need it, and it breaks item_health's
                        // collision with entities that have MOVETYPE_PUSH.
                        // However, removing this code would cause some of the
                        // item_health entities in some of the func_mapjamx
                        // maps to "fall out of the level", because they're
                        // accidentally touching solid surfaces. So, to
                        // maintain backwards-compatibility, this code has
                        // been left in, but will only be run if one of the
                        // func_mapjamx maps is being played.  -- iw
                        if (known_release == KNOWN_RELEASE_FUNC_MAPJAMX)
                        {
                                if (self.classtype == CT_ITEM_HEALTH)
                                {
                                        // Supa, CTF
                                        // hacking around hull issues..
                                        // void hull for now
                                        setsize (self, '0 0 0',  '0 0 0');
                                        self.think = base_item_think_rhull;
                                        self.nextthink = time + 0.2;
                                }
                        }

                        self.movetype = MOVETYPE_TOSS;

                        if (!(self.spawnflags & ITEM_DONTDROP))
                        {
                                setorigin (self, self.origin + '0 0 6');

                                if (!droptofloor())
                                {
                                        dprint (sprintf("base_item_think_place"
                                                ": bonus item %s fell out of "
                                                "level at %v\n",
                                                self.classname, self.origin));
                                        // TODO CEV
                                        // remove (self);
                                        return;
                                }
                        }
                }

                if (self.spawnflags & ITEM_SPAWNED)
                {
                        // SPAWNED, gb
                        self.pos1 = self.mins;
                        self.pos2 = self.maxs;

                        self.model = "";
                        self.solid = SOLID_NOT;

                        if (self.spawnflags & ITEM_DONTDROP)
                                self.movetype = MOVETYPE_NONE;

                        self.use = base_item_use_delayspawn;
                }
        };

        //--------------------------------------------------------------
        // DelaySpawnItem -- this is from rmq-items.qc
        // Makes a SPAWNED item ready for pickup on a trigger event
        // - modified a bit -- dumptruck_ds
        //--------------------------------------------------------------
        void() base_item_use_delayspawn =
        {
                self.solid = SOLID_TRIGGER;
                setmodel (self, self.mdl);
                setsize (self, self.pos1, self.pos2);

                if (!(self.spawnflags & ITEM_SPAWNSILENT))
                        // SILENT, gb
                        // sound (self, CHAN_VOICE, "items/itembk2.wav",
                        //      1, ATTN_NORM);
                        spawn_tfog (self.origin + self.particles_offset);

                if (self.spawnflags & ITEM_SUSPENDED)
                        self.movetype = MOVETYPE_FLY;
                else
                        self.movetype = MOVETYPE_TOSS;

                self.use = sub_null;
        };

        //==============================================================
        // Constructor & Spawn Functions
        //==============================================================

        //--------------------------------------------------------------
        void(entity e) base_item_init =
        {
                base_mapentity_init (e);
                e.classgroup |= CG_ITEM;

                //------------------------------------------------------
                // StartItem -- Sets the clipping size and plants the
                // object on the floor
                //------------------------------------------------------
                e.think = base_item_think_place;
                // items start after other solids || was 0.2 -- dumptruck_ds
                e.nextthink = time + 0.3;
        };

        //--------------------------------------------------------------
        strip void() base_item =
        {
                base_item_init (self);
        };
// };