The Quake sources as originally release under the GPL license on December 21, 1999

1 files changed, 533 insertions, 0 deletions

diff --git a/QW/client/cl_input.c b/QW/client/cl_input.c
new file mode 100644
index 0000000..bfff293
--- /dev/null
+++ b/QW/client/cl_input.c
@@ -0,0 +1,533 @@
+/*
+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 the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+
+*/
+// cl.input.c  -- builds an intended movement command to send to the server
+
+#include "quakedef.h"
+
+cvar_t	cl_nodelta = {"cl_nodelta","0"};
+
+/*
+===============================================================================
+
+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 only be released 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_mlook, in_klook;
+kbutton_t	in_left, in_right, in_forward, in_back;
+kbutton_t	in_lookup, in_lookdown, in_moveleft, in_moveright;
+kbutton_t	in_strafe, in_speed, in_use, in_jump, in_attack;
+kbutton_t	in_up, in_down;
+
+int			in_impulse;
+
+
+void KeyDown (kbutton_t *b)
+{
+	int		k;
+	char	*c;
+	
+	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
+	{
+		Con_Printf ("Three keys down for a button!\n");
+		return;
+	}
+	
+	if (b->state & 1)
+		return;		// still down
+	b->state |= 1 + 2;	// down + impulse down
+}
+
+void KeyUp (kbutton_t *b)
+{
+	int		k;
+	char	*c;
+	
+	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
+}
+
+void IN_KLookDown (void) {KeyDown(&in_klook);}
+void IN_KLookUp (void) {KeyUp(&in_klook);}
+void IN_MLookDown (void) {KeyDown(&in_mlook);}
+void IN_MLookUp (void) {
+KeyUp(&in_mlook);
+if ( !(in_mlook.state&1) &&  lookspring.value)
+	V_StartPitchDrift();
+}
+void IN_UpDown(void) {KeyDown(&in_up);}
+void IN_UpUp(void) {KeyUp(&in_up);}
+void IN_DownDown(void) {KeyDown(&in_down);}
+void IN_DownUp(void) {KeyUp(&in_down);}
+void IN_LeftDown(void) {KeyDown(&in_left);}
+void IN_LeftUp(void) {KeyUp(&in_left);}
+void IN_RightDown(void) {KeyDown(&in_right);}
+void IN_RightUp(void) {KeyUp(&in_right);}
+void IN_ForwardDown(void) {KeyDown(&in_forward);}
+void IN_ForwardUp(void) {KeyUp(&in_forward);}
+void IN_BackDown(void) {KeyDown(&in_back);}
+void IN_BackUp(void) {KeyUp(&in_back);}
+void IN_LookupDown(void) {KeyDown(&in_lookup);}
+void IN_LookupUp(void) {KeyUp(&in_lookup);}
+void IN_LookdownDown(void) {KeyDown(&in_lookdown);}
+void IN_LookdownUp(void) {KeyUp(&in_lookdown);}
+void IN_MoveleftDown(void) {KeyDown(&in_moveleft);}
+void IN_MoveleftUp(void) {KeyUp(&in_moveleft);}
+void IN_MoverightDown(void) {KeyDown(&in_moveright);}
+void IN_MoverightUp(void) {KeyUp(&in_moveright);}
+
+void IN_SpeedDown(void) {KeyDown(&in_speed);}
+void IN_SpeedUp(void) {KeyUp(&in_speed);}
+void IN_StrafeDown(void) {KeyDown(&in_strafe);}
+void IN_StrafeUp(void) {KeyUp(&in_strafe);}
+
+void IN_AttackDown(void) {KeyDown(&in_attack);}
+void IN_AttackUp(void) {KeyUp(&in_attack);}
+
+void IN_UseDown (void) {KeyDown(&in_use);}
+void IN_UseUp (void) {KeyUp(&in_use);}
+void IN_JumpDown (void) {KeyDown(&in_jump);}
+void IN_JumpUp (void) {KeyUp(&in_jump);}
+
+void IN_Impulse (void) {in_impulse=Q_atoi(Cmd_Argv(1));}
+
+/*
+===============
+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_upspeed = {"cl_upspeed","200"};
+cvar_t	cl_forwardspeed = {"cl_forwardspeed","200", true};
+cvar_t	cl_backspeed = {"cl_backspeed","200", true};
+cvar_t	cl_sidespeed = {"cl_sidespeed","350"};
+
+cvar_t	cl_movespeedkey = {"cl_movespeedkey","2.0"};
+
+cvar_t	cl_yawspeed = {"cl_yawspeed","140"};
+cvar_t	cl_pitchspeed = {"cl_pitchspeed","150"};
+
+cvar_t	cl_anglespeedkey = {"cl_anglespeedkey","1.5"};
+
+
+/*
+================
+CL_AdjustAngles
+
+Moves the local angle positions
+================
+*/
+void CL_AdjustAngles (void)
+{
+	float	speed;
+	float	up, down;
+	
+	if (in_speed.state & 1)
+		speed = host_frametime * cl_anglespeedkey.value;
+	else
+		speed = host_frametime;
+
+	if (!(in_strafe.state & 1))
+	{
+		cl.viewangles[YAW] -= speed*cl_yawspeed.value*CL_KeyState (&in_right);
+		cl.viewangles[YAW] += speed*cl_yawspeed.value*CL_KeyState (&in_left);
+		cl.viewangles[YAW] = anglemod(cl.viewangles[YAW]);
+	}
+	if (in_klook.state & 1)
+	{
+		V_StopPitchDrift ();
+		cl.viewangles[PITCH] -= speed*cl_pitchspeed.value * CL_KeyState (&in_forward);
+		cl.viewangles[PITCH] += speed*cl_pitchspeed.value * CL_KeyState (&in_back);
+	}
+	
+	up = CL_KeyState (&in_lookup);
+	down = CL_KeyState(&in_lookdown);
+	
+	cl.viewangles[PITCH] -= speed*cl_pitchspeed.value * up;
+	cl.viewangles[PITCH] += speed*cl_pitchspeed.value * down;
+
+	if (up || down)
+		V_StopPitchDrift ();
+		
+	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;
+	}	
+}
+
+int MakeChar (int i)
+{
+	i &= ~3;
+	if (i < -127*4)
+		i = -127*4;
+	if (i > 127*4)
+		i = 127*4;
+	return i;
+}
+
+/*
+==============
+CL_FinishMove
+==============
+*/
+void CL_FinishMove (usercmd_t *cmd)
+{
+	int		i;
+	int		ms;
+
+//
+// allways 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;
+
+	// send milliseconds of time to apply the move
+	ms = host_frametime * 1000;
+	if (ms > 250)
+		ms = 100;		// time was unreasonable
+	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)&65535) * (360.0/65536.0);
+}
+
+/*
+=================
+CL_SendCmd
+=================
+*/
+void CL_SendCmd (void)
+{
+	sizebuf_t	buf;
+	byte		data[128];
+	int			i;
+	usercmd_t	*cmd, *oldcmd;
+	int			checksumIndex;
+	int			lost;
+	int			seq_hash;
+
+	if (cls.demoplayback)
+		return; // sendcmds come from the demo
+
+	// save this command off for prediction
+	i = cls.netchan.outgoing_sequence & UPDATE_MASK;
+	cmd = &cl.frames[i].cmd;
+	cl.frames[i].senttime = realtime;
+	cl.frames[i].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;
+
+	// get basic movement from keyboard
+	CL_BaseMove (cmd);
+
+	// allow mice or other external controllers to add to the move
+	IN_Move (cmd);
+
+	// if we are spectator, try autocam
+	if (cl.spectator)
+		Cam_Track(cmd);
+
+	CL_FinishMove(cmd);
+
+	Cam_FinishMove(cmd);
+
+// 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);
+
+	i = (cls.netchan.outgoing_sequence-2) & UPDATE_MASK;
+	cmd = &cl.frames[i].cmd;
+	MSG_WriteDeltaUsercmd (&buf, &nullcmd, cmd);
+	oldcmd = cmd;
+
+	i = (cls.netchan.outgoing_sequence-1) & UPDATE_MASK;
+	cmd = &cl.frames[i].cmd;
+	MSG_WriteDeltaUsercmd (&buf, oldcmd, cmd);
+	oldcmd = cmd;
+
+	i = (cls.netchan.outgoing_sequence) & UPDATE_MASK;
+	cmd = &cl.frames[i].cmd;
+	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.value && cls.state == ca_active &&
+		!cls.demorecording)
+	{
+		cl.frames[cls.netchan.outgoing_sequence&UPDATE_MASK].delta_sequence = cl.validsequence;
+		MSG_WriteByte (&buf, clc_delta);
+		MSG_WriteByte (&buf, cl.validsequence&255);
+	}
+	else
+		cl.frames[cls.netchan.outgoing_sequence&UPDATE_MASK].delta_sequence = -1;
+
+	if (cls.demorecording)
+		CL_WriteDemoCmd(cmd);
+
+//
+// deliver the message
+//
+	Netchan_Transmit (&cls.netchan, buf.cursize, buf.data);	
+}
+
+
+
+/*
+============
+CL_InitInput
+============
+*/
+void CL_InitInput (void)
+{
+	Cmd_AddCommand ("+moveup",IN_UpDown);
+	Cmd_AddCommand ("-moveup",IN_UpUp);
+	Cmd_AddCommand ("+movedown",IN_DownDown);
+	Cmd_AddCommand ("-movedown",IN_DownUp);
+	Cmd_AddCommand ("+left",IN_LeftDown);
+	Cmd_AddCommand ("-left",IN_LeftUp);
+	Cmd_AddCommand ("+right",IN_RightDown);
+	Cmd_AddCommand ("-right",IN_RightUp);
+	Cmd_AddCommand ("+forward",IN_ForwardDown);
+	Cmd_AddCommand ("-forward",IN_ForwardUp);
+	Cmd_AddCommand ("+back",IN_BackDown);
+	Cmd_AddCommand ("-back",IN_BackUp);
+	Cmd_AddCommand ("+lookup", IN_LookupDown);
+	Cmd_AddCommand ("-lookup", IN_LookupUp);
+	Cmd_AddCommand ("+lookdown", IN_LookdownDown);
+	Cmd_AddCommand ("-lookdown", IN_LookdownUp);
+	Cmd_AddCommand ("+strafe", IN_StrafeDown);
+	Cmd_AddCommand ("-strafe", IN_StrafeUp);
+	Cmd_AddCommand ("+moveleft", IN_MoveleftDown);
+	Cmd_AddCommand ("-moveleft", IN_MoveleftUp);
+	Cmd_AddCommand ("+moveright", IN_MoverightDown);
+	Cmd_AddCommand ("-moveright", IN_MoverightUp);
+	Cmd_AddCommand ("+speed", IN_SpeedDown);
+	Cmd_AddCommand ("-speed", IN_SpeedUp);
+	Cmd_AddCommand ("+attack", IN_AttackDown);
+	Cmd_AddCommand ("-attack", IN_AttackUp);
+	Cmd_AddCommand ("+use", IN_UseDown);
+	Cmd_AddCommand ("-use", IN_UseUp);
+	Cmd_AddCommand ("+jump", IN_JumpDown);
+	Cmd_AddCommand ("-jump", IN_JumpUp);
+	Cmd_AddCommand ("impulse", IN_Impulse);
+	Cmd_AddCommand ("+klook", IN_KLookDown);
+	Cmd_AddCommand ("-klook", IN_KLookUp);
+	Cmd_AddCommand ("+mlook", IN_MLookDown);
+	Cmd_AddCommand ("-mlook", IN_MLookUp);
+
+	Cvar_RegisterVariable (&cl_nodelta);
+}
+
+/*
+============
+CL_ClearStates
+============
+*/
+void CL_ClearStates (void)
+{
+}
+