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//==============================================================================
// func_elvtr_button - Rogue Dissolution Of Eternity
//==============================================================================

// elevator button
// pmack
// sept 96

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

const float BUTTON_ELVTR_DOWN = 1;

//======================================================================
// globals
//======================================================================

float elv_butn_dir;

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

// func_elvtr_button
void() func_elvtr_button_wait;
void() func_elvtr_button_done;
void() func_elvtr_button_return;
void() func_elvtr_button_fire;
void() func_elvtr_button_blocked;
void(vector dir) func_elvtr_button_destroy;
void() func_elvtr_button_touch;
void() func_elvtr_button_use;
void(entity e) func_elvtr_button_init;
void() func_elvtr_button;

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

/*QUAKED func_elvtr_button (0 .5 .8) ? ELVTR_DOWN X X X X X X X NOT_ON_EASY NOT_ON_NORMAL NOT_ON_HARD_OR_NIGHTMARE NOT_IN_DEATHMATCH NOT_IN_COOP NOT_IN_SINGLEPLAYER X NOT_ON_HARD_ONLY NOT_ON_NIGHTMARE_ONLY

ELEVATOR BUTTON ONLY!

ELVTR_DOWN causes this to be a DOWN button.
Default is UP.

When a button is touched, it moves some distance in the direction of it's angle, triggers all of it's targets, waits some time, then returns to it's original position where it can be triggered again.

"angle" determines the opening direction
"target" all entities with a matching targetname will be used
"speed" override the default 40 speed
"wait" override the default 1 second wait (-1 = never return)
"lip" override the default 4 pixel lip remaining at end of move
"health" if set, the button must be killed instead of touched
"sounds"
0) steam metal
1) wooden clunk
2) metallic click
3) in-out
*/
//----------------------------------------------------------------------
// class func_elvtr_button: base_func
// {
        //--------------------------------------------------------------
        void() func_elvtr_button_wait =
        {
                // elv_butn_dir = 0;
                if (self.spawnflags & BUTTON_ELVTR_DOWN)
                        elv_butn_dir = -1;
                else
                        elv_butn_dir = 1;

                self.state = FUNC_STATE_TOP;
                activator = self.enemy;
                sub_usetargets ();
                // use alternate textures
                self.frame = 1;

                // schedule next action
                self.think = func_elvtr_button_return;
                self.nextthink = self.ltime + self.wait;
        };

        //--------------------------------------------------------------
        void() func_elvtr_button_done =
        {
                self.state = FUNC_STATE_BOTTOM;
        };

        //--------------------------------------------------------------
        void() func_elvtr_button_return =
        {
                self.state = FUNC_STATE_DOWN;
                sub_calcmove (self, self.pos1, self.speed,
                        func_elvtr_button_done);

                // use normal textures
                self.frame = 0;

                if (self.health)
                        // can be shot again
                        self.takedamage = DAMAGE_YES;
        };

        //--------------------------------------------------------------
        void() func_elvtr_button_fire =
        {
                if (self.state == FUNC_STATE_UP || self.state == FUNC_STATE_TOP)
                        return;

                sound (self, CHAN_VOICE, self.noise, 1, ATTN_NORM);

                self.state = FUNC_STATE_UP;
                sub_calcmove (self, self.pos2, self.speed,
                        func_elvtr_button_wait);
        };

        //--------------------------------------------------------------
        void() func_elvtr_button_blocked =
        {
                // do nothing, just don't come all the way back out
        };

        //--------------------------------------------------------------
        void(vector dir) func_elvtr_button_destroy =
        {
                self.enemy = damage_attacker;
                self.health = self.max_health;
                // wil be reset upon return
                self.takedamage = DAMAGE_NO;
                func_elvtr_button_fire ();
        };

        //--------------------------------------------------------------
        void() func_elvtr_button_touch =
        {
                // if (self.health > 0)
                //      return;

                if (other.classtype != CT_PLAYER)
                        return;

                self.enemy = other;
                func_elvtr_button_fire ();
        };

        //--------------------------------------------------------------
        void() func_elvtr_button_use =
        {
                self.enemy = activator;
                func_elvtr_button_fire ();
        };

        //--------------------------------------------------------------
        void(entity e) func_elvtr_button_init =
        {
                e.classname = "func_elvtr_button";
                e.classtype = CT_FUNC_ELVTR_BUTTON;
                base_func_init (e);

                if (e.sounds == 0)
                {
                        precache_sound ("buttons/airbut1.wav");
                        e.noise = "buttons/airbut1.wav";
                }

                if (e.sounds == 1)
                {
                        precache_sound ("buttons/switch21.wav");
                        e.noise = "buttons/switch21.wav";
                }

                if (e.sounds == 2)
                {
                        precache_sound ("buttons/switch02.wav");
                        e.noise = "buttons/switch02.wav";
                }

                if (e.sounds == 3)
                {
                        precache_sound ("buttons/switch04.wav");
                        e.noise = "buttons/switch04.wav";
                }

                sub_setmovedir (e);

                e.movetype = MOVETYPE_PUSH;
                e.solid = SOLID_BSP;
                setmodel (e, e.model);

                e.blocked = func_elvtr_button_blocked;
                e.use = func_elvtr_button_use;

                if (e.health)
                {
                        e.max_health = e.health;
                        e.takedamage = DAMAGE_YES;
                        e.destroy = func_elvtr_button_destroy;
                }
                else
                {
                        e.touch = func_elvtr_button_touch;
                }

                if (!e.speed)
                        e.speed = 40;
                if (!e.wait)
                        e.wait = 1;
                if (!e.lip)
                        e.lip = 4;

                e.state = FUNC_STATE_BOTTOM;

                e.pos1 = e.origin;
                e.pos2 = e.pos1 + e.movedir *
                        (fabs(e.movedir * e.size) - e.lip);
        };

        //--------------------------------------------------------------
        void() func_elvtr_button =
        {
                // new spawnflags for all entities -- iw
                if (SUB_Inhibit())
                        return;

                func_elvtr_button_init (self);
        };
// };