ref: a7a315bff61bff58a9c918294f53c1e87d7ae7bb
dir: /sys/src/games/doom/p_user.c/
// Emacs style mode select -*- C++ -*-
//-----------------------------------------------------------------------------
//
// $Id:$
//
// Copyright (C) 1993-1996 by id Software, Inc.
//
// This source is available for distribution and/or modification
// only under the terms of the DOOM Source Code License as
// published by id Software. All rights reserved.
//
// The source is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// FITNESS FOR A PARTICULAR PURPOSE. See the DOOM Source Code License
// for more details.
//
// $Log:$
//
// DESCRIPTION:
// Player related stuff.
// Bobbing POV/weapon, movement.
// Pending weapon.
//
//-----------------------------------------------------------------------------
static const char
rcsid[] = "$Id: p_user.c,v 1.3 1997/01/28 22:08:29 b1 Exp $";
#include "doomdef.h"
#include "d_event.h"
#include "p_local.h"
#include "doomstat.h"
// Index of the special effects (INVUL inverse) map.
#define INVERSECOLORMAP 32
//
// Movement.
//
// 16 pixels of bob
#define MAXBOB 0x100000
boolean onground;
//
// P_Thrust
// Moves the given origin along a given angle.
//
void
P_Thrust
( player_t* player,
angle_t angle,
fixed_t move )
{
angle >>= ANGLETOFINESHIFT;
player->mo->momx += FixedMul(move,finecosine[angle]);
player->mo->momy += FixedMul(move,finesine[angle]);
}
//
// P_CalcHeight
// Calculate the walking / running height adjustment
//
void P_CalcHeight (player_t* player)
{
int angle;
fixed_t bob;
// Regular movement bobbing
// (needs to be calculated for gun swing
// even if not on ground)
// OPTIMIZE: tablify angle
// Note: a LUT allows for effects
// like a ramp with low health.
player->bob =
FixedMul (player->mo->momx, player->mo->momx)
+ FixedMul (player->mo->momy,player->mo->momy);
player->bob >>= 2;
if (player->bob>MAXBOB)
player->bob = MAXBOB;
if ((player->cheats & CF_NOMOMENTUM) || !onground)
{
player->viewz = player->mo->z + VIEWHEIGHT;
if (player->viewz > player->mo->ceilingz-4*FRACUNIT)
player->viewz = player->mo->ceilingz-4*FRACUNIT;
player->viewz = player->mo->z + player->viewheight;
return;
}
angle = (FINEANGLES/20*leveltime)&FINEMASK;
bob = FixedMul ( player->bob/2, finesine[angle]);
// move viewheight
if (player->playerstate == PST_LIVE)
{
player->viewheight += player->deltaviewheight;
if (player->viewheight > VIEWHEIGHT)
{
player->viewheight = VIEWHEIGHT;
player->deltaviewheight = 0;
}
if (player->viewheight < VIEWHEIGHT/2)
{
player->viewheight = VIEWHEIGHT/2;
if (player->deltaviewheight <= 0)
player->deltaviewheight = 1;
}
if (player->deltaviewheight)
{
player->deltaviewheight += FRACUNIT/4;
if (!player->deltaviewheight)
player->deltaviewheight = 1;
}
}
player->viewz = player->mo->z + player->viewheight + bob;
if (player->viewz > player->mo->ceilingz-4*FRACUNIT)
player->viewz = player->mo->ceilingz-4*FRACUNIT;
}
//
// P_MovePlayer
//
void P_MovePlayer (player_t* player)
{
ticcmd_t* cmd;
cmd = &player->cmd;
player->mo->angle += (cmd->angleturn<<16);
// Do not let the player control movement
// if not onground.
onground = (player->mo->z <= player->mo->floorz);
if (cmd->forwardmove && onground)
P_Thrust (player, player->mo->angle, cmd->forwardmove*2048);
if (cmd->sidemove && onground)
P_Thrust (player, player->mo->angle-ANG90, cmd->sidemove*2048);
if ( (cmd->forwardmove || cmd->sidemove)
&& player->mo->state == &states[S_PLAY] )
{
P_SetMobjState (player->mo, S_PLAY_RUN1);
}
}
//
// P_DeathThink
// Fall on your face when dying.
// Decrease POV height to floor height.
//
#define ANG5 (ANG90/18)
void P_DeathThink (player_t* player)
{
angle_t angle;
angle_t delta;
P_MovePsprites (player);
// fall to the ground
if (player->viewheight > 6*FRACUNIT)
player->viewheight -= FRACUNIT;
if (player->viewheight < 6*FRACUNIT)
player->viewheight = 6*FRACUNIT;
player->deltaviewheight = 0;
onground = (player->mo->z <= player->mo->floorz);
P_CalcHeight (player);
if (player->attacker && player->attacker != player->mo)
{
angle = R_PointToAngle2 (player->mo->x,
player->mo->y,
player->attacker->x,
player->attacker->y);
delta = angle - player->mo->angle;
if (delta < ANG5 || delta > (unsigned)-ANG5)
{
// Looking at killer,
// so fade damage flash down.
player->mo->angle = angle;
if (player->damagecount)
player->damagecount--;
}
else if (delta < ANG180)
player->mo->angle += ANG5;
else
player->mo->angle -= ANG5;
}
else if (player->damagecount)
player->damagecount--;
if (player->cmd.buttons & BT_USE)
player->playerstate = PST_REBORN;
}
//
// P_PlayerThink
//
void P_PlayerThink (player_t* player)
{
ticcmd_t* cmd;
weapontype_t newweapon;
// fixme: do this in the cheat code
if (player->cheats & CF_NOCLIP)
player->mo->flags |= MF_NOCLIP;
else
player->mo->flags &= ~MF_NOCLIP;
// chain saw run forward
cmd = &player->cmd;
if (player->mo->flags & MF_JUSTATTACKED)
{
cmd->angleturn = 0;
cmd->forwardmove = 0xc800/512;
cmd->sidemove = 0;
player->mo->flags &= ~MF_JUSTATTACKED;
}
if (player->playerstate == PST_DEAD)
{
P_DeathThink (player);
return;
}
// Move around.
// Reactiontime is used to prevent movement
// for a bit after a teleport.
if (player->mo->reactiontime)
player->mo->reactiontime--;
else
P_MovePlayer (player);
P_CalcHeight (player);
if (player->mo->subsector->sector->special)
P_PlayerInSpecialSector (player);
// Check for weapon change.
// A special event has no other buttons.
if (cmd->buttons & BT_SPECIAL)
cmd->buttons = 0;
if (cmd->buttons & BT_CHANGE)
{
// The actual changing of the weapon is done
// when the weapon psprite can do it
// (read: not in the middle of an attack).
newweapon = (cmd->buttons&BT_WEAPONMASK)>>BT_WEAPONSHIFT;
if (newweapon == wp_fist
&& player->weaponowned[wp_chainsaw]
&& !(player->readyweapon == wp_chainsaw
&& player->powers[pw_strength]))
{
newweapon = wp_chainsaw;
}
if ( (gamemode == commercial)
&& newweapon == wp_shotgun
&& player->weaponowned[wp_supershotgun]
&& player->readyweapon != wp_supershotgun)
{
newweapon = wp_supershotgun;
}
if (player->weaponowned[newweapon]
&& newweapon != player->readyweapon)
{
// Do not go to plasma or BFG in shareware,
// even if cheated.
if ((newweapon != wp_plasma
&& newweapon != wp_bfg)
|| (gamemode != shareware) )
{
player->pendingweapon = newweapon;
}
}
}
// check for use
if (cmd->buttons & BT_USE)
{
if (!player->usedown)
{
P_UseLines (player);
player->usedown = true;
}
}
else
player->usedown = false;
// cycle psprites
P_MovePsprites (player);
// Counters, time dependend power ups.
// Strength counts up to diminish fade.
if (player->powers[pw_strength])
player->powers[pw_strength]++;
if (player->powers[pw_invulnerability])
player->powers[pw_invulnerability]--;
if (player->powers[pw_invisibility])
if (! --player->powers[pw_invisibility] )
player->mo->flags &= ~MF_SHADOW;
if (player->powers[pw_infrared])
player->powers[pw_infrared]--;
if (player->powers[pw_ironfeet])
player->powers[pw_ironfeet]--;
if (player->damagecount)
player->damagecount--;
if (player->bonuscount)
player->bonuscount--;
// Handling colormaps.
if (player->powers[pw_invulnerability])
{
if (player->powers[pw_invulnerability] > 4*32
|| (player->powers[pw_invulnerability]&8) )
player->fixedcolormap = INVERSECOLORMAP;
else
player->fixedcolormap = 0;
}
else if (player->powers[pw_infrared])
{
if (player->powers[pw_infrared] > 4*32
|| (player->powers[pw_infrared]&8) )
{
// almost full bright
player->fixedcolormap = 1;
}
else
player->fixedcolormap = 0;
}
else
player->fixedcolormap = 0;
}