1 files changed, 829 insertions, 0 deletions

diff --git a/src/p_pspr.c b/src/p_pspr.c
new file mode 100644
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--- /dev/null
+++ b/src/p_pspr.c
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+/* Emacs style mode select   -*- C++ -*-
+ *-----------------------------------------------------------------------------
+ *
+ *
+ *  PrBoom: a Doom port merged with LxDoom and LSDLDoom
+ *  based on BOOM, a modified and improved DOOM engine
+ *  Copyright (C) 1999 by
+ *  id Software, Chi Hoang, Lee Killough, Jim Flynn, Rand Phares, Ty Halderman
+ *  Copyright (C) 1999-2000 by
+ *  Jess Haas, Nicolas Kalkhof, Colin Phipps, Florian Schulze
+ *  Copyright 2005, 2006 by
+ *  Florian Schulze, Colin Phipps, Neil Stevens, Andrey Budko
+ *
+ *  This program is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU General Public License
+ *  as published by the Free Software Foundation; either version 2
+ *  of the License, or (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ *  02111-1307, USA.
+ *
+ * DESCRIPTION:
+ *      Weapon sprite animation, weapon objects.
+ *      Action functions for weapons.
+ *
+ *-----------------------------------------------------------------------------*/
+
+#include "doomstat.h"
+#include "r_main.h"
+#include "p_map.h"
+#include "p_inter.h"
+#include "p_pspr.h"
+#include "p_enemy.h"
+#include "m_random.h"
+#include "s_sound.h"
+#include "sounds.h"
+#include "d_event.h"
+#include "r_demo.h"
+
+#define LOWERSPEED   (FRACUNIT*6)
+#define RAISESPEED   (FRACUNIT*6)
+#define WEAPONBOTTOM (FRACUNIT*128)
+#define WEAPONTOP    (FRACUNIT*32)
+
+#define BFGCELLS bfgcells        /* Ty 03/09/98 externalized in p_inter.c */
+
+extern void P_Thrust(player_t *, angle_t, fixed_t);
+
+// The following array holds the recoil values         // phares
+
+static const int recoil_values[] = {    // phares
+  10, // wp_fist
+  10, // wp_pistol
+  30, // wp_shotgun
+  10, // wp_chaingun
+  100,// wp_missile
+  20, // wp_plasma
+  100,// wp_bfg
+  0,  // wp_chainsaw
+  80  // wp_supershotgun
+};
+
+//
+// P_SetPsprite
+//
+
+static void P_SetPsprite(player_t *player, int position, statenum_t stnum)
+{
+  pspdef_t *psp = &player->psprites[position];
+
+  do
+    {
+      state_t *state;
+
+      if (!stnum)
+        {
+          // object removed itself
+          psp->state = NULL;
+          break;
+        }
+
+      state = &states[stnum];
+      psp->state = state;
+      psp->tics = state->tics;        // could be 0
+
+      if (state->misc1)
+        {
+          // coordinate set
+          psp->sx = state->misc1 << FRACBITS;
+          psp->sy = state->misc2 << FRACBITS;
+        }
+
+      // Call action routine.
+      // Modified handling.
+      if (state->action)
+        {
+          state->action(player, psp);
+          if (!psp->state)
+            break;
+        }
+      stnum = psp->state->nextstate;
+    }
+  while (!psp->tics);     // an initial state of 0 could cycle through
+}
+
+//
+// P_BringUpWeapon
+// Starts bringing the pending weapon up
+// from the bottom of the screen.
+// Uses player
+//
+
+static void P_BringUpWeapon(player_t *player)
+{
+  statenum_t newstate;
+
+  if (player->pendingweapon == wp_nochange)
+    player->pendingweapon = player->readyweapon;
+
+  if (player->pendingweapon == wp_chainsaw)
+    S_StartSound (player->mo, sfx_sawup);
+
+  newstate = weaponinfo[player->pendingweapon].upstate;
+
+  player->pendingweapon = wp_nochange;
+  // killough 12/98: prevent pistol from starting visibly at bottom of screen:
+  player->psprites[ps_weapon].sy =
+    mbf_features ? WEAPONBOTTOM+FRACUNIT*2 : WEAPONBOTTOM;
+
+  P_SetPsprite(player, ps_weapon, newstate);
+}
+
+// The first set is where the weapon preferences from             // killough,
+// default.cfg are stored. These values represent the keys used   // phares
+// in DOOM2 to bring up the weapon, i.e. 6 = plasma gun. These    //    |
+// are NOT the wp_* constants.                                    //    V
+
+int weapon_preferences[2][NUMWEAPONS+1] = {
+  {6, 9, 4, 3, 2, 8, 5, 7, 1, 0},  // !compatibility preferences
+  {6, 9, 4, 3, 2, 8, 5, 7, 1, 0},  //  compatibility preferences
+};
+
+// P_SwitchWeapon checks current ammo levels and gives you the
+// most preferred weapon with ammo. It will not pick the currently
+// raised weapon. When called from P_CheckAmmo this won't matter,
+// because the raised weapon has no ammo anyway. When called from
+// G_BuildTiccmd you want to toggle to a different weapon regardless.
+
+int P_SwitchWeapon(player_t *player)
+{
+  int *prefer = weapon_preferences[demo_compatibility!=0]; // killough 3/22/98
+  int currentweapon = player->readyweapon;
+  int newweapon = currentweapon;
+  int i = NUMWEAPONS+1;   // killough 5/2/98
+
+  // killough 2/8/98: follow preferences and fix BFG/SSG bugs
+
+  do
+    switch (*prefer++)
+      {
+      case 1:
+        if (!player->powers[pw_strength])      // allow chainsaw override
+          break;
+      case 0:
+        newweapon = wp_fist;
+        break;
+      case 2:
+        if (player->ammo[am_clip])
+          newweapon = wp_pistol;
+        break;
+      case 3:
+        if (player->weaponowned[wp_shotgun] && player->ammo[am_shell])
+          newweapon = wp_shotgun;
+        break;
+      case 4:
+        if (player->weaponowned[wp_chaingun] && player->ammo[am_clip])
+          newweapon = wp_chaingun;
+        break;
+      case 5:
+        if (player->weaponowned[wp_missile] && player->ammo[am_misl])
+          newweapon = wp_missile;
+        break;
+      case 6:
+        if (player->weaponowned[wp_plasma] && player->ammo[am_cell] &&
+            gamemode != shareware)
+          newweapon = wp_plasma;
+        break;
+      case 7:
+        if (player->weaponowned[wp_bfg] && gamemode != shareware &&
+            player->ammo[am_cell] >= (demo_compatibility ? 41 : 40))
+          newweapon = wp_bfg;
+        break;
+      case 8:
+        if (player->weaponowned[wp_chainsaw])
+          newweapon = wp_chainsaw;
+        break;
+      case 9:
+        if (player->weaponowned[wp_supershotgun] && gamemode == commercial &&
+            player->ammo[am_shell] >= (demo_compatibility ? 3 : 2))
+          newweapon = wp_supershotgun;
+        break;
+      }
+  while (newweapon==currentweapon && --i);          // killough 5/2/98
+  return newweapon;
+}
+
+// killough 5/2/98: whether consoleplayer prefers weapon w1 over weapon w2.
+int P_WeaponPreferred(int w1, int w2)
+{
+  return
+    (weapon_preferences[0][0] != ++w2 && (weapon_preferences[0][0] == ++w1 ||
+    (weapon_preferences[0][1] !=   w2 && (weapon_preferences[0][1] ==   w1 ||
+    (weapon_preferences[0][2] !=   w2 && (weapon_preferences[0][2] ==   w1 ||
+    (weapon_preferences[0][3] !=   w2 && (weapon_preferences[0][3] ==   w1 ||
+    (weapon_preferences[0][4] !=   w2 && (weapon_preferences[0][4] ==   w1 ||
+    (weapon_preferences[0][5] !=   w2 && (weapon_preferences[0][5] ==   w1 ||
+    (weapon_preferences[0][6] !=   w2 && (weapon_preferences[0][6] ==   w1 ||
+    (weapon_preferences[0][7] !=   w2 && (weapon_preferences[0][7] ==   w1
+   ))))))))))))))));
+}
+
+//
+// P_CheckAmmo
+// Returns true if there is enough ammo to shoot.
+// If not, selects the next weapon to use.
+// (only in demo_compatibility mode -- killough 3/22/98)
+//
+
+boolean P_CheckAmmo(player_t *player)
+{
+  ammotype_t ammo = weaponinfo[player->readyweapon].ammo;
+  int count = 1;  // Regular
+
+  if (player->readyweapon == wp_bfg)  // Minimal amount for one shot varies.
+    count = BFGCELLS;
+  else
+    if (player->readyweapon == wp_supershotgun)        // Double barrel.
+      count = 2;
+
+  // Some do not need ammunition anyway.
+  // Return if current ammunition sufficient.
+
+  if (ammo == am_noammo || player->ammo[ammo] >= count)
+    return true;
+
+  // Out of ammo, pick a weapon to change to.
+  //
+  // killough 3/22/98: for old demos we do the switch here and now;
+  // for Boom games we cannot do this, and have different player
+  // preferences across demos or networks, so we have to use the
+  // G_BuildTiccmd() interface instead of making the switch here.
+
+  if (demo_compatibility)
+    {
+      player->pendingweapon = P_SwitchWeapon(player);      // phares
+      // Now set appropriate weapon overlay.
+      P_SetPsprite(player,ps_weapon,weaponinfo[player->readyweapon].downstate);
+    }
+
+  return false;
+}
+
+//
+// P_FireWeapon.
+//
+
+static void P_FireWeapon(player_t *player)
+{
+  statenum_t newstate;
+
+  if (!P_CheckAmmo(player))
+    return;
+
+  P_SetMobjState(player->mo, S_PLAY_ATK1);
+  newstate = weaponinfo[player->readyweapon].atkstate;
+  P_SetPsprite(player, ps_weapon, newstate);
+  P_NoiseAlert(player->mo, player->mo);
+}
+
+//
+// P_DropWeapon
+// Player died, so put the weapon away.
+//
+
+void P_DropWeapon(player_t *player)
+{
+  P_SetPsprite(player, ps_weapon, weaponinfo[player->readyweapon].downstate);
+}
+
+//
+// A_WeaponReady
+// The player can fire the weapon
+// or change to another weapon at this time.
+// Follows after getting weapon up,
+// or after previous attack/fire sequence.
+//
+
+void A_WeaponReady(player_t *player, pspdef_t *psp)
+{
+  // get out of attack state
+  if (player->mo->state == &states[S_PLAY_ATK1]
+      || player->mo->state == &states[S_PLAY_ATK2] )
+    P_SetMobjState(player->mo, S_PLAY);
+
+  if (player->readyweapon == wp_chainsaw && psp->state == &states[S_SAW])
+    S_StartSound(player->mo, sfx_sawidl);
+
+  // check for change
+  //  if player is dead, put the weapon away
+
+  if (player->pendingweapon != wp_nochange || !player->health)
+    {
+      // change weapon (pending weapon should already be validated)
+      statenum_t newstate = weaponinfo[player->readyweapon].downstate;
+      P_SetPsprite(player, ps_weapon, newstate);
+      return;
+    }
+
+  // check for fire
+  //  the missile launcher and bfg do not auto fire
+
+  if (player->cmd.buttons & BT_ATTACK)
+    {
+      if (!player->attackdown || (player->readyweapon != wp_missile &&
+                                  player->readyweapon != wp_bfg))
+        {
+          player->attackdown = true;
+          P_FireWeapon(player);
+          return;
+        }
+    }
+  else
+    player->attackdown = false;
+
+  // bob the weapon based on movement speed
+  {
+    int angle = (128*leveltime) & FINEMASK;
+    psp->sx = FRACUNIT + FixedMul(player->bob, finecosine[angle]);
+    angle &= FINEANGLES/2-1;
+    psp->sy = WEAPONTOP + FixedMul(player->bob, finesine[angle]);
+  }
+}
+
+//
+// A_ReFire
+// The player can re-fire the weapon
+// without lowering it entirely.
+//
+
+void A_ReFire(player_t *player, pspdef_t *psp)
+{
+  // check for fire
+  //  (if a weaponchange is pending, let it go through instead)
+
+  if ( (player->cmd.buttons & BT_ATTACK)
+       && player->pendingweapon == wp_nochange && player->health)
+    {
+      player->refire++;
+      P_FireWeapon(player);
+    }
+  else
+    {
+      player->refire = 0;
+      P_CheckAmmo(player);
+    }
+}
+
+void A_CheckReload(player_t *player, pspdef_t *psp)
+{
+  if (!P_CheckAmmo(player) && compatibility_level >= prboom_4_compatibility) {
+    /* cph 2002/08/08 - In old Doom, P_CheckAmmo would start the weapon lowering
+     * immediately. This was lost in Boom when the weapon switching logic was
+     * rewritten. But we must tell Doom that we don't need to complete the
+     * reload frames for the weapon here. G_BuildTiccmd will set ->pendingweapon
+     * for us later on. */
+    P_SetPsprite(player,ps_weapon,weaponinfo[player->readyweapon].downstate);
+  }
+}
+
+//
+// A_Lower
+// Lowers current weapon,
+//  and changes weapon at bottom.
+//
+
+void A_Lower(player_t *player, pspdef_t *psp)
+{
+  psp->sy += LOWERSPEED;
+
+  // Is already down.
+  if (psp->sy < WEAPONBOTTOM)
+    return;
+
+  // Player is dead.
+  if (player->playerstate == PST_DEAD)
+    {
+      psp->sy = WEAPONBOTTOM;
+      return;      // don't bring weapon back up
+    }
+
+  // The old weapon has been lowered off the screen,
+  // so change the weapon and start raising it
+
+  if (!player->health)
+    {      // Player is dead, so keep the weapon off screen.
+      P_SetPsprite(player,  ps_weapon, S_NULL);
+      return;
+    }
+
+  player->readyweapon = player->pendingweapon;
+
+  P_BringUpWeapon(player);
+}
+
+//
+// A_Raise
+//
+
+void A_Raise(player_t *player, pspdef_t *psp)
+{
+  statenum_t newstate;
+
+  psp->sy -= RAISESPEED;
+
+  if (psp->sy > WEAPONTOP)
+    return;
+
+  psp->sy = WEAPONTOP;
+
+  // The weapon has been raised all the way,
+  //  so change to the ready state.
+
+  newstate = weaponinfo[player->readyweapon].readystate;
+
+  P_SetPsprite(player, ps_weapon, newstate);
+}
+
+
+// Weapons now recoil, amount depending on the weapon.              // phares
+//                                                                  //   |
+// The P_SetPsprite call in each of the weapon firing routines      //   V
+// was moved here so the recoil could be synched with the
+// muzzle flash, rather than the pressing of the trigger.
+// The BFG delay caused this to be necessary.
+
+static void A_FireSomething(player_t* player,int adder)
+{
+  P_SetPsprite(player, ps_flash,
+               weaponinfo[player->readyweapon].flashstate+adder);
+
+  // killough 3/27/98: prevent recoil in no-clipping mode
+  if (!(player->mo->flags & MF_NOCLIP))
+    if (!compatibility && weapon_recoil)
+      P_Thrust(player,
+               ANG180+player->mo->angle,                          //   ^
+               2048*recoil_values[player->readyweapon]);          //   |
+}                                                                 // phares
+
+//
+// A_GunFlash
+//
+
+void A_GunFlash(player_t *player, pspdef_t *psp)
+{
+  P_SetMobjState(player->mo, S_PLAY_ATK2);
+
+  A_FireSomething(player,0);                                      // phares
+}
+
+//
+// WEAPON ATTACKS
+//
+
+//
+// A_Punch
+//
+
+void A_Punch(player_t *player, pspdef_t *psp)
+{
+  angle_t angle;
+  int t, slope, damage = (P_Random(pr_punch)%10+1)<<1;
+
+  if (player->powers[pw_strength])
+    damage *= 10;
+
+  angle = player->mo->angle;
+
+  // killough 5/5/98: remove dependence on order of evaluation:
+  t = P_Random(pr_punchangle);
+  angle += (t - P_Random(pr_punchangle))<<18;
+
+  /* killough 8/2/98: make autoaiming prefer enemies */
+  if (!mbf_features ||
+      (slope = P_AimLineAttack(player->mo, angle, MELEERANGE, MF_FRIEND),
+       !linetarget))
+    slope = P_AimLineAttack(player->mo, angle, MELEERANGE, 0);
+
+  P_LineAttack(player->mo, angle, MELEERANGE, slope, damage);
+
+  if (!linetarget)
+    return;
+
+  S_StartSound(player->mo, sfx_punch);
+
+  // turn to face target
+
+  player->mo->angle = R_PointToAngle2(player->mo->x, player->mo->y,
+                                      linetarget->x, linetarget->y);
+  R_SmoothPlaying_Reset(player); // e6y
+}
+
+//
+// A_Saw
+//
+
+void A_Saw(player_t *player, pspdef_t *psp)
+{
+  int slope, damage = 2*(P_Random(pr_saw)%10+1);
+  angle_t angle = player->mo->angle;
+  // killough 5/5/98: remove dependence on order of evaluation:
+  int t = P_Random(pr_saw);
+  angle += (t - P_Random(pr_saw))<<18;
+
+  /* Use meleerange + 1 so that the puff doesn't skip the flash
+   * killough 8/2/98: make autoaiming prefer enemies */
+  if (!mbf_features ||
+      (slope = P_AimLineAttack(player->mo, angle, MELEERANGE+1, MF_FRIEND),
+       !linetarget))
+    slope = P_AimLineAttack(player->mo, angle, MELEERANGE+1, 0);
+
+  P_LineAttack(player->mo, angle, MELEERANGE+1, slope, damage);
+
+  if (!linetarget)
+    {
+      S_StartSound(player->mo, sfx_sawful);
+      return;
+    }
+
+  S_StartSound(player->mo, sfx_sawhit);
+
+  // turn to face target
+  angle = R_PointToAngle2(player->mo->x, player->mo->y,
+                          linetarget->x, linetarget->y);
+
+  if (angle - player->mo->angle > ANG180) {
+    if (angle - player->mo->angle < -ANG90/20)
+      player->mo->angle = angle + ANG90/21;
+    else
+      player->mo->angle -= ANG90/20;
+  } else {
+    if (angle - player->mo->angle > ANG90/20)
+      player->mo->angle = angle - ANG90/21;
+    else
+      player->mo->angle += ANG90/20;
+  }
+
+  player->mo->flags |= MF_JUSTATTACKED;
+  R_SmoothPlaying_Reset(player); // e6y
+}
+
+//
+// A_FireMissile
+//
+
+void A_FireMissile(player_t *player, pspdef_t *psp)
+{
+  player->ammo[weaponinfo[player->readyweapon].ammo]--;
+  P_SpawnPlayerMissile(player->mo, MT_ROCKET);
+}
+
+//
+// A_FireBFG
+//
+
+void A_FireBFG(player_t *player, pspdef_t *psp)
+{
+  player->ammo[weaponinfo[player->readyweapon].ammo] -= BFGCELLS;
+  P_SpawnPlayerMissile(player->mo, MT_BFG);
+}
+
+//
+// A_FirePlasma
+//
+
+void A_FirePlasma(player_t *player, pspdef_t *psp)
+{
+  player->ammo[weaponinfo[player->readyweapon].ammo]--;
+
+  A_FireSomething(player,P_Random(pr_plasma)&1);              // phares
+  P_SpawnPlayerMissile(player->mo, MT_PLASMA);
+}
+
+//
+// P_BulletSlope
+// Sets a slope so a near miss is at aproximately
+// the height of the intended target
+//
+
+static fixed_t bulletslope;
+
+static void P_BulletSlope(mobj_t *mo)
+{
+  angle_t an = mo->angle;    // see which target is to be aimed at
+
+  /* killough 8/2/98: make autoaiming prefer enemies */
+  uint_64_t mask = mbf_features ? MF_FRIEND : 0;
+
+  do
+    {
+      bulletslope = P_AimLineAttack(mo, an, 16*64*FRACUNIT, mask);
+      if (!linetarget)
+  bulletslope = P_AimLineAttack(mo, an += 1<<26, 16*64*FRACUNIT, mask);
+      if (!linetarget)
+  bulletslope = P_AimLineAttack(mo, an -= 2<<26, 16*64*FRACUNIT, mask);
+    }
+  while (mask && (mask=0, !linetarget));  /* killough 8/2/98 */
+}
+
+//
+// P_GunShot
+//
+
+static void P_GunShot(mobj_t *mo, boolean accurate)
+{
+  int damage = 5*(P_Random(pr_gunshot)%3+1);
+  angle_t angle = mo->angle;
+
+  if (!accurate)
+    {  // killough 5/5/98: remove dependence on order of evaluation:
+      int t = P_Random(pr_misfire);
+      angle += (t - P_Random(pr_misfire))<<18;
+    }
+
+  P_LineAttack(mo, angle, MISSILERANGE, bulletslope, damage);
+}
+
+//
+// A_FirePistol
+//
+
+void A_FirePistol(player_t *player, pspdef_t *psp)
+{
+  S_StartSound(player->mo, sfx_pistol);
+
+  P_SetMobjState(player->mo, S_PLAY_ATK2);
+  player->ammo[weaponinfo[player->readyweapon].ammo]--;
+
+  A_FireSomething(player,0);                                      // phares
+  P_BulletSlope(player->mo);
+  P_GunShot(player->mo, !player->refire);
+}
+
+//
+// A_FireShotgun
+//
+
+void A_FireShotgun(player_t *player, pspdef_t *psp)
+{
+  int i;
+
+  S_StartSound(player->mo, sfx_shotgn);
+  P_SetMobjState(player->mo, S_PLAY_ATK2);
+
+  player->ammo[weaponinfo[player->readyweapon].ammo]--;
+
+  A_FireSomething(player,0);                                      // phares
+
+  P_BulletSlope(player->mo);
+
+  for (i=0; i<7; i++)
+    P_GunShot(player->mo, false);
+}
+
+//
+// A_FireShotgun2
+//
+
+void A_FireShotgun2(player_t *player, pspdef_t *psp)
+{
+  int i;
+
+  S_StartSound(player->mo, sfx_dshtgn);
+  P_SetMobjState(player->mo, S_PLAY_ATK2);
+  player->ammo[weaponinfo[player->readyweapon].ammo] -= 2;
+
+  A_FireSomething(player,0);                                      // phares
+
+  P_BulletSlope(player->mo);
+
+  for (i=0; i<20; i++)
+    {
+      int damage = 5*(P_Random(pr_shotgun)%3+1);
+      angle_t angle = player->mo->angle;
+      // killough 5/5/98: remove dependence on order of evaluation:
+      int t = P_Random(pr_shotgun);
+      angle += (t - P_Random(pr_shotgun))<<19;
+      t = P_Random(pr_shotgun);
+      P_LineAttack(player->mo, angle, MISSILERANGE, bulletslope +
+                   ((t - P_Random(pr_shotgun))<<5), damage);
+    }
+}
+
+//
+// A_FireCGun
+//
+
+void A_FireCGun(player_t *player, pspdef_t *psp)
+{
+  if (player->ammo[weaponinfo[player->readyweapon].ammo] || comp[comp_sound])
+    S_StartSound(player->mo, sfx_pistol);
+
+  if (!player->ammo[weaponinfo[player->readyweapon].ammo])
+    return;
+
+  P_SetMobjState(player->mo, S_PLAY_ATK2);
+  player->ammo[weaponinfo[player->readyweapon].ammo]--;
+
+  A_FireSomething(player,psp->state - &states[S_CHAIN1]);           // phares
+
+  P_BulletSlope(player->mo);
+
+  P_GunShot(player->mo, !player->refire);
+}
+
+void A_Light0(player_t *player, pspdef_t *psp)
+{
+  player->extralight = 0;
+}
+
+void A_Light1 (player_t *player, pspdef_t *psp)
+{
+  player->extralight = 1;
+}
+
+void A_Light2 (player_t *player, pspdef_t *psp)
+{
+  player->extralight = 2;
+}
+
+//
+// A_BFGSpray
+// Spawn a BFG explosion on every monster in view
+//
+
+void A_BFGSpray(mobj_t *mo)
+{
+  int i;
+
+  for (i=0 ; i<40 ; i++)  // offset angles from its attack angle
+    {
+      int j, damage;
+      angle_t an = mo->angle - ANG90/2 + ANG90/40*i;
+
+      // mo->target is the originator (player) of the missile
+
+      // killough 8/2/98: make autoaiming prefer enemies
+      if (!mbf_features ||
+         (P_AimLineAttack(mo->target, an, 16*64*FRACUNIT, MF_FRIEND),
+         !linetarget))
+        P_AimLineAttack(mo->target, an, 16*64*FRACUNIT, 0);
+
+      if (!linetarget)
+        continue;
+
+      P_SpawnMobj(linetarget->x, linetarget->y,
+                  linetarget->z + (linetarget->height>>2), MT_EXTRABFG);
+
+      for (damage=j=0; j<15; j++)
+        damage += (P_Random(pr_bfg)&7) + 1;
+
+      P_DamageMobj(linetarget, mo->target, mo->target, damage);
+    }
+}
+
+//
+// A_BFGsound
+//
+
+void A_BFGsound(player_t *player, pspdef_t *psp)
+{
+  S_StartSound(player->mo, sfx_bfg);
+}
+
+//
+// P_SetupPsprites
+// Called at start of level for each player.
+//
+
+void P_SetupPsprites(player_t *player)
+{
+  int i;
+
+  // remove all psprites
+  for (i=0; i<NUMPSPRITES; i++)
+    player->psprites[i].state = NULL;
+
+  // spawn the gun
+  player->pendingweapon = player->readyweapon;
+  P_BringUpWeapon(player);
+}
+
+//
+// P_MovePsprites
+// Called every tic by player thinking routine.
+//
+
+void P_MovePsprites(player_t *player)
+{
+  pspdef_t *psp = player->psprites;
+  int i;
+
+  // a null state means not active
+  // drop tic count and possibly change state
+  // a -1 tic count never changes
+
+  for (i=0; i<NUMPSPRITES; i++, psp++)
+    if (psp->state && psp->tics != -1 && !--psp->tics)
+      P_SetPsprite(player, i, psp->state->nextstate);
+
+  player->psprites[ps_flash].sx = player->psprites[ps_weapon].sx;
+  player->psprites[ps_flash].sy = player->psprites[ps_weapon].sy;
+}