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quakeforge/qw/source/cl_input.c

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/*
cl_input.c
builds an intended movement command to send to the server
Copyright (C) 1996-1997 Id Software, Inc.
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:
Free Software Foundation, Inc.
59 Temple Place - Suite 330
Boston, MA 02111-1307, USA
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
static __attribute__ ((used)) const char rcsid[] =
"$Id$";
#ifdef HAVE_STRING_H
# include <string.h>
#endif
#ifdef HAVE_STRINGS_H
# include <strings.h>
#endif
#include "QF/checksum.h"
#include "QF/cmd.h"
#include "QF/cvar.h"
#include "QF/input.h"
#include "QF/keys.h"
#include "QF/msg.h"
#include "QF/sys.h"
#include "QF/teamplay.h"
#include "QF/va.h"
#include "qw/msg_ucmd.h"
#include "cl_cam.h"
#include "cl_demo.h"
#include "cl_input.h"
#include "cl_parse.h"
#include "client.h"
#include "compat.h"
#include "host.h"
#include "clview.h"
cvar_t *cl_nodelta;
cvar_t *cl_maxnetfps;
cvar_t *cl_spamimpulse;
/*
KEY BUTTONS
Continuous button event tracking is complicated by the fact that two
different input sources (say, mouse button 1 and the control key) can
both press the same button, but the button should be released only when
both of the pressing key have been released.
When a key event issues a button command (+forward, +attack, etc), it
appends its key number as a parameter to the command so it can be
matched up with the release.
state bit 0 is the current state of the key
state bit 1 is edge triggered on the up to down transition
state bit 2 is edge triggered on the down to up transition
*/
kbutton_t in_left, in_right, in_forward, in_back;
kbutton_t in_lookup, in_lookdown, in_moveleft, in_moveright;
kbutton_t in_use, in_jump, in_attack;
kbutton_t in_up, in_down;
int in_impulse;
static void
KeyPress (kbutton_t *b)
{
const char *c;
int k;
c = Cmd_Argv (1);
if (c[0])
k = atoi (c);
else
k = -1; // typed manually at the console for
// continuous down
if (k == b->down[0] || k == b->down[1])
return; // repeating key
if (!b->down[0])
b->down[0] = k;
else if (!b->down[1])
b->down[1] = k;
else {
Sys_Printf ("Three keys down for a button!\n");
return;
}
if (b->state & 1)
return; // still down
b->state |= 1 + 2; // down + impulse down
}
static void
KeyRelease (kbutton_t *b)
{
const char *c;
int k;
c = Cmd_Argv (1);
if (c[0])
k = atoi (c);
else { // typed manually at the console,
// assume for unsticking, so clear
// all
b->down[0] = b->down[1] = 0;
b->state = 4; // impulse up
return;
}
if (b->down[0] == k)
b->down[0] = 0;
else if (b->down[1] == k)
b->down[1] = 0;
else
return; // key up without coresponding down
// (menu pass through)
if (b->down[0] || b->down[1])
return; // some other key is still holding it
// down
if (!(b->state & 1))
return; // still up (this should not happen)
b->state &= ~1; // now up
b->state |= 4; // impulse up
}
static void
IN_KLookPress (void)
{
KeyPress (&in_klook);
}
static void
IN_KLookRelease (void)
{
KeyRelease (&in_klook);
}
static void
IN_MLookPress (void)
{
KeyPress (&in_mlook);
}
static void
IN_MLookRelease (void)
{
KeyRelease (&in_mlook);
if (!freelook && lookspring->int_val)
V_StartPitchDrift ();
}
static void
IN_UpPress (void)
{
KeyPress (&in_up);
}
static void
IN_UpRelease (void)
{
KeyRelease (&in_up);
}
static void
IN_DownPress (void)
{
KeyPress (&in_down);
}
static void
IN_DownRelease (void)
{
KeyRelease (&in_down);
}
static void
IN_LeftPress (void)
{
KeyPress (&in_left);
}
static void
IN_LeftRelease (void)
{
KeyRelease (&in_left);
}
static void
IN_RightPress (void)
{
KeyPress (&in_right);
}
static void
IN_RightRelease (void)
{
KeyRelease (&in_right);
}
static void
IN_ForwardPress (void)
{
KeyPress (&in_forward);
}
static void
IN_ForwardRelease (void)
{
KeyRelease (&in_forward);
}
static void
IN_BackPress (void)
{
KeyPress (&in_back);
}
static void
IN_BackRelease (void)
{
KeyRelease (&in_back);
}
static void
IN_LookupPress (void)
{
KeyPress (&in_lookup);
}
static void
IN_LookupRelease (void)
{
KeyRelease (&in_lookup);
}
static void
IN_LookdownPress (void)
{
KeyPress (&in_lookdown);
}
static void
IN_LookdownRelease (void)
{
KeyRelease (&in_lookdown);
}
static void
IN_MoveleftPress (void)
{
KeyPress (&in_moveleft);
}
static void
IN_MoveleftRelease (void)
{
KeyRelease (&in_moveleft);
}
static void
IN_MoverightPress (void)
{
KeyPress (&in_moveright);
}
static void
IN_MoverightRelease (void)
{
KeyRelease (&in_moveright);
}
static void
IN_SpeedPress (void)
{
KeyPress (&in_speed);
}
static void
IN_SpeedRelease (void)
{
KeyRelease (&in_speed);
}
static void
IN_StrafePress (void)
{
KeyPress (&in_strafe);
}
static void
IN_StrafeRelease (void)
{
KeyRelease (&in_strafe);
}
static void
IN_AttackPress (void)
{
KeyPress (&in_attack);
}
static void
IN_AttackRelease (void)
{
KeyRelease (&in_attack);
}
static void
IN_UsePress (void)
{
KeyPress (&in_use);
}
static void
IN_UseRelease (void)
{
KeyRelease (&in_use);
}
static void
IN_JumpPress (void)
{
KeyPress (&in_jump);
}
static void
IN_JumpRelease (void)
{
KeyRelease (&in_jump);
}
static void
IN_Impulse (void)
{
in_impulse = atoi (Cmd_Argv (1));
if (Cmd_Argc () <= 2)
return;
Team_BestWeaponImpulse (); // HACK HACK HACK
}
/*
CL_KeyState
Returns 0.25 if a key was pressed and released during the frame,
0.5 if it was pressed and held
0 if held then released, and
1.0 if held for the entire time
*/
float
CL_KeyState (kbutton_t *key)
{
float val;
qboolean impulsedown, impulseup, down;
impulsedown = key->state & 2;
impulseup = key->state & 4;
down = key->state & 1;
val = 0;
if (impulsedown && !impulseup) {
if (down)
val = 0.5; // pressed and held this frame
else
val = 0; // I_Error ();
}
if (impulseup && !impulsedown) {
if (down)
val = 0; // I_Error ();
else
val = 0; // released this frame
}
if (!impulsedown && !impulseup) {
if (down)
val = 1.0; // held the entire frame
else
val = 0; // up the entire frame
}
if (impulsedown && impulseup) {
if (down)
val = 0.75; // released and re-pressed this frame
else
val = 0.25; // pressed and released this frame
}
key->state &= 1; // clear impulses
return val;
}
cvar_t *cl_anglespeedkey;
cvar_t *cl_backspeed;
cvar_t *cl_forwardspeed;
cvar_t *cl_movespeedkey;
cvar_t *cl_pitchspeed;
cvar_t *cl_sidespeed;
cvar_t *cl_upspeed;
cvar_t *cl_yawspeed;
/*
CL_AdjustAngles
Moves the local angle positions
*/
static void
CL_AdjustAngles (void)
{
float down, up;
float pitchspeed, yawspeed;
pitchspeed = cl_pitchspeed->value;
yawspeed = cl_yawspeed->value;
if (in_speed.state & 1) {
pitchspeed *= cl_anglespeedkey->value;
yawspeed *= cl_anglespeedkey->value;
}
if ((cl.fpd & FPD_LIMIT_PITCH) && pitchspeed > FPD_MAXPITCH)
pitchspeed = FPD_MAXPITCH;
if ((cl.fpd & FPD_LIMIT_YAW) && yawspeed > FPD_MAXYAW)
yawspeed = FPD_MAXYAW;
pitchspeed *= host_frametime;
yawspeed *= host_frametime;
if (!(in_strafe.state & 1)) {
cl.viewangles[YAW] -= yawspeed * CL_KeyState (&in_right);
cl.viewangles[YAW] += yawspeed * CL_KeyState (&in_left);
cl.viewangles[YAW] = anglemod (cl.viewangles[YAW]);
}
if (in_klook.state & 1) {
V_StopPitchDrift ();
cl.viewangles[PITCH] -= pitchspeed * CL_KeyState (&in_forward);
cl.viewangles[PITCH] += pitchspeed * CL_KeyState (&in_back);
}
up = CL_KeyState (&in_lookup);
down = CL_KeyState (&in_lookdown);
cl.viewangles[PITCH] -= pitchspeed * up;
cl.viewangles[PITCH] += pitchspeed * down;
if (up || down)
V_StopPitchDrift ();
// FIXME: Need to clean up view angle limits
if (cl.viewangles[PITCH] > 80)
cl.viewangles[PITCH] = 80;
if (cl.viewangles[PITCH] < -70)
cl.viewangles[PITCH] = -70;
if (cl.viewangles[ROLL] > 50)
cl.viewangles[ROLL] = 50;
if (cl.viewangles[ROLL] < -50)
cl.viewangles[ROLL] = -50;
}
/*
CL_BaseMove
Send the intended movement message to the server
*/
void
CL_BaseMove (usercmd_t *cmd)
{
CL_AdjustAngles ();
memset (cmd, 0, sizeof (*cmd));
VectorCopy (cl.viewangles, cmd->angles);
if (in_strafe.state & 1) {
cmd->sidemove += cl_sidespeed->value * CL_KeyState (&in_right);
cmd->sidemove -= cl_sidespeed->value * CL_KeyState (&in_left);
}
cmd->sidemove += cl_sidespeed->value * CL_KeyState (&in_moveright);
cmd->sidemove -= cl_sidespeed->value * CL_KeyState (&in_moveleft);
cmd->upmove += cl_upspeed->value * CL_KeyState (&in_up);
cmd->upmove -= cl_upspeed->value * CL_KeyState (&in_down);
if (!(in_klook.state & 1)) {
cmd->forwardmove += cl_forwardspeed->value * CL_KeyState (&in_forward);
cmd->forwardmove -= cl_backspeed->value * CL_KeyState (&in_back);
}
// adjust for speed key
if (in_speed.state & 1) {
cmd->forwardmove *= cl_movespeedkey->value;
cmd->sidemove *= cl_movespeedkey->value;
cmd->upmove *= cl_movespeedkey->value;
}
if (freelook)
V_StopPitchDrift ();
viewdelta.angles[0] = viewdelta.angles[1] = viewdelta.angles[2] = 0;
viewdelta.position[0] = viewdelta.position[1] = viewdelta.position[2] = 0;
IN_Move ();
// adjust for chase camera angles
if (cl.chase
&& (chase_active->int_val == 2 || chase_active->int_val == 3)) {
vec3_t forward, right, up, f, r;
vec3_t dir = {0, 0, 0};
dir[1] = r_refdef.viewangles[1] - cl.viewangles[1];
AngleVectors (dir, forward, right, up);
VectorScale (forward, cmd->forwardmove, f);
VectorScale (right, cmd->sidemove, r);
cmd->forwardmove = f[0] + r[0];
cmd->sidemove = f[1] + r[1];
VectorScale (forward, viewdelta.position[2], f);
VectorScale (right, viewdelta.position[0], r);
viewdelta.position[2] = f[0] + r[0];
viewdelta.position[0] = (f[1] + r[1]) * -1;
}
cmd->forwardmove += viewdelta.position[2] * m_forward->value;
cmd->sidemove += viewdelta.position[0] * m_side->value;
cmd->upmove += viewdelta.position[1];
cl.viewangles[PITCH] += viewdelta.angles[PITCH] * m_pitch->value;
cl.viewangles[YAW] += viewdelta.angles[YAW] * m_yaw->value;
cl.viewangles[ROLL] += viewdelta.angles[ROLL];
if (freelook && !(in_strafe.state & 1)) {
cl.viewangles[PITCH] = bound (-70, cl.viewangles[PITCH], 80);
}
}
static int
MakeChar (int i)
{
i &= ~3;
if (i < -127 * 4)
i = -127 * 4;
if (i > 127 * 4)
i = 127 * 4;
return i;
}
static void
CL_FinishMove (usercmd_t *cmd)
{
int ms, i;
static double accum = 0.0;
// always dump the first two message, because it may contain leftover
// inputs from the last level
if (++cl.movemessages <= 2)
return;
// figure button bits
if (in_attack.state & 3)
cmd->buttons |= 1;
in_attack.state &= ~2;
if (in_jump.state & 3)
cmd->buttons |= 2;
in_jump.state &= ~2;
// 1999-10-29 +USE fix by Maddes start
if (in_use.state & 3)
cmd->buttons |= 4;
in_use.state &= ~2;
// 1999-10-29 +USE fix by Maddes end
// send milliseconds of time to apply the move
accum += (host_frametime * 1000.0);
ms = accum + 0.5;
accum -= ms;
if (ms > 250) {
ms = 100; // time was unreasonable
accum = 0.0;
}
cmd->msec = ms;
VectorCopy (cl.viewangles, cmd->angles);
cmd->impulse = in_impulse;
in_impulse = 0;
// chop down so no extra bits are kept that the server wouldn't get
cmd->forwardmove = MakeChar (cmd->forwardmove);
cmd->sidemove = MakeChar (cmd->sidemove);
cmd->upmove = MakeChar (cmd->upmove);
for (i = 0; i < 3; i++)
cmd->angles[i] = ((int) (cmd->angles[i] * (65536.0 / 360.0)) & 65535) *
(360.0 / 65536.0);
}
static inline int
pps_check (int dontdrop)
{
static float pps_balance = 0.0;
static int dropcount = 0;
pps_balance += host_frametime;
// never drop more than 2 messages in a row -- that'll cause PL
// and don't drop if one of the last two movemessages have an impulse
if (pps_balance > 0.0 || dropcount >= 2 || dontdrop) {
float pps;
if (!(pps = cl_maxnetfps->int_val))
pps = rate->value / 80.0;
pps = bound (1, pps, 72);
pps_balance -= 1.0 / pps;
pps_balance = bound (-0.1, pps_balance, 0.1);
dropcount = 0;
return 1;
} else {
int i;
// don't count this message when calculating PL
i = cls.netchan.outgoing_sequence & UPDATE_MASK;
cl.frames[i].receivedtime = -3;
// drop this message
cls.netchan.outgoing_sequence++;
dropcount++;
return 0;
}
}
static inline void
build_cmd (usercmd_t *cmd)
{
// get basic movement from keyboard, mouse, etc
CL_BaseMove (cmd);
// if we are spectator, try autocam
if (cl.spectator)
Cam_Track (cmd);
CL_FinishMove (cmd);
Cam_FinishMove (cmd);
}
void
CL_SendCmd (void)
{
byte data[128];
int checksumIndex, lost, seq_hash, frame;
qboolean dontdrop; // FIXME: needed without cl_c2sImpulseBackup?
sizebuf_t buf;
usercmd_t *cmd, *oldcmd;
if (cls.demoplayback && !cls.demoplayback2)
return; // sendcmds come from the demo
// save this command off for prediction
frame = cls.netchan.outgoing_sequence & UPDATE_MASK;
cmd = &cl.frames[frame].cmd;
cl.frames[frame].senttime = realtime;
cl.frames[frame].receivedtime = -1; // we haven't gotten a reply yet
// seq_hash = (cls.netchan.outgoing_sequence & 0xffff) ; // ^ QW_CHECK_HASH;
seq_hash = cls.netchan.outgoing_sequence;
build_cmd (cmd);
if (cls.demoplayback2) {
cls.netchan.outgoing_sequence++;
return;
}
// send this and the previous cmds in the message, so
// if the last packet was dropped, it can be recovered
buf.maxsize = 128;
buf.cursize = 0;
buf.data = data;
MSG_WriteByte (&buf, clc_move);
// save the position for a checksum byte
checksumIndex = buf.cursize;
MSG_WriteByte (&buf, 0);
// write our lossage percentage
lost = CL_CalcNet ();
MSG_WriteByte (&buf, (byte) lost);
dontdrop = false;
frame = (cls.netchan.outgoing_sequence - 2) & UPDATE_MASK;
cmd = &cl.frames[frame].cmd;
if (cl_spamimpulse->int_val >= 2)
dontdrop = dontdrop || cmd->impulse;
MSG_WriteDeltaUsercmd (&buf, &nullcmd, cmd);
oldcmd = cmd;
frame = (cls.netchan.outgoing_sequence - 1) & UPDATE_MASK;
cmd = &cl.frames[frame].cmd;
if (cl_spamimpulse->int_val >= 3)
dontdrop = dontdrop || cmd->impulse;
MSG_WriteDeltaUsercmd (&buf, oldcmd, cmd);
oldcmd = cmd;
frame = (cls.netchan.outgoing_sequence) & UPDATE_MASK;
cmd = &cl.frames[frame].cmd;
if (cl_spamimpulse->int_val >= 1)
dontdrop = dontdrop || cmd->impulse;
MSG_WriteDeltaUsercmd (&buf, oldcmd, cmd);
// calculate a checksum over the move commands
buf.data[checksumIndex] =
COM_BlockSequenceCRCByte (buf.data + checksumIndex + 1,
buf.cursize - checksumIndex - 1, seq_hash);
// request delta compression of entities
if (cls.netchan.outgoing_sequence - cl.validsequence >= UPDATE_BACKUP - 1)
cl.validsequence = 0;
if (cl.validsequence && !cl_nodelta->int_val && cls.state == ca_active
&& !cls.demorecording) {
cl.frames[frame].delta_sequence = cl.validsequence;
MSG_WriteByte (&buf, clc_delta);
MSG_WriteByte (&buf, cl.validsequence & 255);
} else {
cl.frames[frame].delta_sequence = -1;
}
if (cls.demorecording)
CL_WriteDemoCmd (cmd);
// deliver the message
if (pps_check (dontdrop))
Netchan_Transmit (&cls.netchan, buf.cursize, buf.data);
}
void
CL_Input_Init (void)
{
Cmd_AddCommand ("+moveup", IN_UpPress, "When active the player is "
"swimming up in a liquid");
Cmd_AddCommand ("-moveup", IN_UpRelease, "When active the player is not "
"swimming up in a liquid");
Cmd_AddCommand ("+movedown", IN_DownPress, "When active the player is "
"swimming down in a liquid");
Cmd_AddCommand ("-movedown", IN_DownRelease, "When active the player is "
"not swimming down in a liquid");
Cmd_AddCommand ("+left", IN_LeftPress, "When active the player is turning "
"left");
Cmd_AddCommand ("-left", IN_LeftRelease, "When active the player is not "
"turning left");
Cmd_AddCommand ("+right", IN_RightPress, "When active the player is "
"turning right");
Cmd_AddCommand ("-right", IN_RightRelease, "When active the player is not "
"turning right");
Cmd_AddCommand ("+forward", IN_ForwardPress, "When active the player is "
"moving forward");
Cmd_AddCommand ("-forward", IN_ForwardRelease, "When active the player is "
"not moving forward");
Cmd_AddCommand ("+back", IN_BackPress, "When active the player is moving "
"backwards");
Cmd_AddCommand ("-back", IN_BackRelease, "When active the player is not "
"moving backwards");
Cmd_AddCommand ("+lookup", IN_LookupPress, "When active the player's view "
"is looking up");
Cmd_AddCommand ("-lookup", IN_LookupRelease, "When active the player's "
"view is not looking up");
Cmd_AddCommand ("+lookdown", IN_LookdownPress, "When active the player's "
"view is looking down");
Cmd_AddCommand ("-lookdown", IN_LookdownRelease, "When active the "
"player's view is not looking up");
Cmd_AddCommand ("+strafe", IN_StrafePress, "When active, +left and +right "
"function like +moveleft and +moveright");
Cmd_AddCommand ("-strafe", IN_StrafeRelease, "When active, +left and "
"+right stop functioning like +moveleft and +moveright");
Cmd_AddCommand ("+moveleft", IN_MoveleftPress, "When active the player is "
"strafing left");
Cmd_AddCommand ("-moveleft", IN_MoveleftRelease, "When active the player "
"is not strafing left");
Cmd_AddCommand ("+moveright", IN_MoverightPress, "When active the player "
"is strafing right");
Cmd_AddCommand ("-moveright", IN_MoverightRelease, "When active the "
"player is not strafing right");
Cmd_AddCommand ("+speed", IN_SpeedPress, "When active the player is "
"running");
Cmd_AddCommand ("-speed", IN_SpeedRelease, "When active the player is not "
"running");
Cmd_AddCommand ("+attack", IN_AttackPress, "When active player is "
"firing/using current weapon");
Cmd_AddCommand ("-attack", IN_AttackRelease, "When active player is not "
"firing/using current weapon");
Cmd_AddCommand ("+use", IN_UsePress, "Non-functional. Left over command "
"for opening doors and triggering switches");
Cmd_AddCommand ("-use", IN_UseRelease, "Non-functional. Left over command "
"for opening doors and triggering switches");
Cmd_AddCommand ("+jump", IN_JumpPress, "When active the player is "
"jumping");
Cmd_AddCommand ("-jump", IN_JumpRelease, "When active the player is not "
"jumping");
Cmd_AddCommand ("impulse", IN_Impulse, "Call a game function or QuakeC "
"function.");
Cmd_AddCommand ("+klook", IN_KLookPress, "When active, +forward and +back "
"perform +lookup and +lookdown");
Cmd_AddCommand ("-klook", IN_KLookRelease, "When active, +forward and "
"+back don't perform +lookup and +lookdown");
Cmd_AddCommand ("+mlook", IN_MLookPress, "When active moving the mouse or "
"joystick forwards and backwards performs +lookup and "
"+lookdown");
Cmd_AddCommand ("-mlook", IN_MLookRelease, "When active moving the mouse "
"or joystick forwards and backwards doesn't perform "
"+lookup and +lookdown");
}
void
CL_Input_Init_Cvars (void)
{
cl_nodelta = Cvar_Get ("cl_nodelta", "0", CVAR_NONE, NULL,
"Disable player delta compression. Set to 1 if you "
"have a poor ISP and get many U_REMOVE warnings.");
cl_maxnetfps = Cvar_Get ("cl_maxnetfps", "0", CVAR_ARCHIVE, NULL,
"Controls number of command packets sent per "
"second. Default 0 is unlimited.");
cl_spamimpulse = Cvar_Get ("cl_spamimpulse", "3", CVAR_NONE, NULL,
"Controls number of duplicate packets sent if "
"an impulse is being sent. Default (id "
"behavior) is 3.");
}
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