/* 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 #ifdef HAVE_STRING_H # include #endif #ifdef HAVE_STRINGS_H # include #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_data->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."); }