game-source/fbxa/bot_phys.qc
2003-02-18 23:12:03 +00:00

678 lines
17 KiB
C++

/***********************************************
* *
* FrikBot Physics *
* The near-perfect emulation of *
* Client movement *
* *
* Special Thanks to: Asdf, Frog *
* Alan "Strider" Kivlin *
* *
* *
***********************************************/
/*
This program is in the Public Domain. My crack legal
team would like to add:
RYAN "FRIKAC" SMITH IS PROVIDING THIS SOFTWARE "AS IS"
AND MAKES NO WARRANTY, EXPRESS OR IMPLIED, AS TO THE
ACCURACY, CAPABILITY, EFFICIENCY, MERCHANTABILITY, OR
FUNCTIONING OF THIS SOFTWARE AND/OR DOCUMENTATION. IN
NO EVENT WILL RYAN "FRIKAC" SMITH BE LIABLE FOR ANY
GENERAL, CONSEQUENTIAL, INDIRECT, INCIDENTAL,
EXEMPLARY, OR SPECIAL DAMAGES, EVEN IF RYAN "FRIKAC"
SMITH HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
DAMAGES, IRRESPECTIVE OF THE CAUSE OF SUCH DAMAGES.
You accept this software on the condition that you
indemnify and hold harmless Ryan "FrikaC" Smith from
any and all liability or damages to third parties,
including attorney fees, court costs, and other
related costs and expenses, arising out of your use
of this software irrespective of the cause of said
liability.
The export from the United States or the subsequent
reexport of this software is subject to compliance
with United States export control and munitions
control restrictions. You agree that in the event you
seek to export this software, you assume full
responsibility for obtaining all necessary export
licenses and approvals and for assuring compliance
with applicable reexport restrictions.
Any reproduction of this software must contain
this notice in its entirety.
*/
/*
=========================================
Stuff mimicking cl_input.c code
=========================================
*/
float(float key) CL_KeyState =
{
return (float)((self.keys & key) > 0);
};
void() CL_KeyMove = // CL_BaseMove + CL_AdjustAngles
{
local float anglespeed;
local vector view = '0 0 0';
if (self.keys != self.oldkeys)
{
self.movevect = '0 0 0';
self.movevect_y = self.movevect_y + (350 * CL_KeyState(KEY_MOVERIGHT));
// 350 is the default cl_sidespeed
self.movevect_y = self.movevect_y - (350 * CL_KeyState(KEY_MOVELEFT));
// 350 is the default cl_sidespeed
self.movevect_x = self.movevect_x + (200 * CL_KeyState(KEY_MOVEFORWARD));
// 200 is the default cl_forwardspeed
self.movevect_x = self.movevect_x - (200 * CL_KeyState(KEY_MOVEBACK));
// 200 is the default cl_backspeed
self.movevect_z = self.movevect_z + (200 * CL_KeyState(KEY_MOVEUP));
// 200 is the default cl_upspeed
self.movevect_z = self.movevect_z - (200 * CL_KeyState(KEY_MOVEDOWN));
// 200 is the default cl_upspeed
if (!(self.b_aiflags & AI_PRECISION))
self.movevect = self.movevect * 2;
// 2 is the default cl_movespeedkey & bot always has +speed
}
self.oldkeys = self.keys;
if (self.b_skill != 2) // use mouse emulation
{
anglespeed = 1.5 * real_frametime;
// 1.5 is the default cl_anglespeedkey & bot always has +speed
self.v_angle_y = self.v_angle_y + anglespeed * CL_KeyState(KEY_LOOKLEFT) * 140;
// 140 is default cl_yawspeed
self.v_angle_y = self.v_angle_y - anglespeed * CL_KeyState(KEY_LOOKRIGHT) * 140;
// 140 is default cl_yawspeed
self.v_angle_x = self.v_angle_x - anglespeed * CL_KeyState(KEY_LOOKUP) * 150;
// 150 is default cl_pitchspeed
self.v_angle_x = self.v_angle_x + anglespeed * CL_KeyState(KEY_LOOKDOWN) * 150;
// 150 is default cl_pitchspeed
}
else
{
view_x = angcomp(self.b_angle_x, self.v_angle_x);
view_y = angcomp(self.b_angle_y, self.v_angle_y);
if (vlen(view) > 30)
{
self.mouse_emu = self.mouse_emu + (view * 30);
if (vlen(self.mouse_emu) > 180)
self.mouse_emu = normalize(self.mouse_emu) * 180;
}
else
self.mouse_emu = view * (1 / real_frametime);
self.v_angle = self.v_angle + self.mouse_emu * real_frametime;
}
if (self.v_angle_x > 80)
self.v_angle_x = 80;
else if (self.v_angle_x < -70)
self.v_angle_x = -70;
if (self.v_angle_z > 50)
self.v_angle_z = 50;
else if (self.v_angle_z < -50)
self.v_angle_z = -50;
self.v_angle_y = frik_anglemod(self.v_angle_y);
};
/*
=========================================
Stuff mimicking sv_user.c
=========================================
*/
void() SV_UserFriction =
{
local vector vel, start, stop;
local float sped, friction, newspeed;
vel = self.velocity;
vel_z =0;
sped = vlen(vel);
vel = self.velocity;
if (!sped)
return;
// if the leading edge is over a dropoff, increase friction
start_x = stop_x = self.origin_x + vel_x / (sped * 16);
start_y = stop_y = self.origin_y + vel_y / (sped * 16);
start_z = self.origin_z + self.mins_z;
stop_z = start_z - 34;
traceline(start, stop, TRUE, self);
if (trace_fraction == 1)
friction = sv_friction * 2; // 2 is default edgefriction, removed for QW compatability
else
friction = sv_friction;
if (sped < sv_stopspeed)
newspeed = sped - real_frametime * sv_stopspeed * friction;
else
newspeed = sped - real_frametime * sped * friction;
if (newspeed < 0)
newspeed = 0;
newspeed = newspeed / sped;
self.velocity_y = vel_y * newspeed;
self.velocity_x = vel_x * newspeed;
};
void() SV_WaterJump =
{
if (time > self.teleport_time || !self.waterlevel)
{
self.flags = self.flags - (self.flags & FL_WATERJUMP);
self.teleport_time = 0;
}
self.velocity_x = self.movedir_x;
self.velocity_y = self.movedir_y;
};
void() DropPunchAngle =
{
local float len;
len = vlen(self.punchangle);
self.punchangle = normalize(self.punchangle);
len = len - 10 * real_frametime;
if (len < 0)
len = 0;
self.punchangle = self.punchangle * len;
};
void(vector wishvel) SV_AirAccelerate =
{
local float addspeed, wishspd, accelspeed, currentspeed;
wishspd = vlen(wishvel);
wishvel = normalize(wishvel);
if (wishspd > 30)
wishspd = 30;
currentspeed = self.velocity * wishvel;
addspeed = wishspd - currentspeed;
if (addspeed <= 0)
return;
accelspeed = 10 * sv_accelerate * wishspd * real_frametime;
if (accelspeed > addspeed)
accelspeed = addspeed;
self.velocity = self.velocity + accelspeed * wishvel;
};
void(vector wishvel) SV_Accelerate =
{
local float addspeed, wishspd, accelspeed, currentspeed;
wishspd = vlen(wishvel);
wishvel = normalize(wishvel);
currentspeed = self.velocity * wishvel;
addspeed = wishspd - currentspeed;
if (addspeed <= 0)
return;
accelspeed = sv_accelerate * wishspd * real_frametime;
if (accelspeed > addspeed)
accelspeed = addspeed;
self.velocity = self.velocity + accelspeed * wishvel;
};
void() SV_WaterMove =
{
local vector wishvel;
local float wishspeed, addspeed, cspeed, newspeed;
makevectors(self.v_angle);
wishvel = v_right * self.movevect_y + v_forward * self.movevect_x;
if (self.movevect == '0 0 0')
wishvel_z = wishvel_z - 60;
else
wishvel_z = wishvel_z + self.movevect_z;
wishspeed = vlen(wishvel);
if (wishspeed > sv_maxspeed)
{
wishvel = (sv_maxspeed / wishspeed) * wishvel;
wishspeed = sv_maxspeed;
}
wishspeed = wishspeed * 0.7;
cspeed = vlen(self.velocity);
if (cspeed)
{
newspeed = cspeed - (real_frametime * cspeed * sv_friction);
if (newspeed < 0)
newspeed = 0;
self.velocity = self.velocity * (newspeed / cspeed);
}
else
newspeed = 0;
if (!wishspeed)
return;
addspeed = wishspeed - newspeed;
if (addspeed <= 0)
return;
wishvel = normalize(wishvel);
cspeed = sv_accelerate * wishspeed * real_frametime;
if (cspeed > addspeed)
cspeed = addspeed;
self.velocity = self.velocity + cspeed * wishvel;
};
void() SV_AirMove =
{
local vector wishvel, vangle;
vangle = self.v_angle;
vangle_x = vangle_z = 0;
makevectors(vangle);
if (time < self.teleport_time && (self.movevect_x < 0))
self.movevect_x = 0;
wishvel = v_right * self.movevect_y + v_forward * self.movevect_x;
if (self.movetype != MOVETYPE_WALK)
wishvel_z = self.movevect_z;
else
wishvel_z = 0;
if (vlen(wishvel) > sv_maxspeed)
wishvel = normalize(wishvel) * sv_maxspeed;
if (self.movetype == MOVETYPE_NOCLIP)
self.velocity = wishvel;
else if (self.flags & FL_ONGROUND)
{
SV_UserFriction();
SV_Accelerate(wishvel);
}
else
SV_AirAccelerate (wishvel);
};
void() SV_ClientThink =
{
local vector vangle;
if (self.movetype == MOVETYPE_NONE)
return;
DropPunchAngle();
if (self.health <= 0)
return;
self.v_angle_z = 0; // V_CalcRoll removed, sucks
self.angles_z = self.v_angle_z * 4;
vangle = self.v_angle + self.punchangle;
if (!self.fixangle)
{
self.angles_x = (vangle_x / -3);
self.angles_y = vangle_y;
} else
{
self.v_angle = self.angles;
self.fixangle = 0;
}
if (self.flags & FL_WATERJUMP)
{
SV_WaterJump();
return;
}
if ((self.waterlevel >= 2) && (self.movetype != MOVETYPE_NOCLIP))
{
SV_WaterMove();
return;
}
SV_AirMove();
};
/*
=========================================
Stuff mimicking sv_phys.c
=========================================
*/
float() SV_RunThink =
{
local float thinktime, bkuptime;
thinktime = self.nextthink;
bkuptime = time;
if (thinktime <= 0 || thinktime > (time + real_frametime))
return TRUE;
if (thinktime < time)
thinktime = time;
self.nextthink = 0;
time = thinktime;
other = world;
makevectors(self.v_angle); // hack
self.think();
time = bkuptime;
return TRUE;
};
void(float scale) SV_AddGravity =
{
self.velocity_z = self.velocity_z - (scale * sv_gravity * real_frametime);
};
float() SV_CheckWater =
{
local vector point;
local float cont;
point_x = self.origin_x;
point_y = self.origin_y;
self.waterlevel = 0;
self.watertype = CONTENT_EMPTY;
point_z = self.origin_z + self.mins_z + 1;
cont = pointcontents(point);
if (cont <= CONTENT_WATER)
{
self.watertype = cont;
self.waterlevel = 1;
point_z = self.origin_z + (self.mins_z + self.maxs_z) * 0.5;
cont = pointcontents(point);
if (cont <= CONTENT_WATER)
{
self.waterlevel = 2;
point_z = self.origin_z + self.view_ofs_z;
cont = pointcontents(point);
if (cont <= CONTENT_WATER)
self.waterlevel = 3;
}
}
return (float) (self.waterlevel > 1);
};
void() RemoveThud = // well sometimes
{
local entity oself;
if (other == world)
{
if (self.flags & FL_ONGROUND)
{
self.flags = self.flags - FL_ONGROUND;
}
}
else
{
if (other.solid == SOLID_BSP && (self.flags & FL_ONGROUND))
{
// RM: Does this break anything?
// If not, then some more thuds have been removed.
self.flags = self.flags - FL_ONGROUND;
}
if (other == self.owner)
return;
if (self.owner.solid == SOLID_NOT)
return;
oself = other;
other = self.owner;
self = oself;
if (self.solid == SOLID_BSP)
if (self.touch)
self.touch();
}
};
void() SV_CheckOnGround =
{
local vector org, v;
org = self.origin;
local float currentflags;
currentflags = self.flags;
self.flags = self.flags | FL_ONGROUND | FL_PARTIALGROUND;
walkmove(0,0); // perform C touch function
self.flags = currentflags | FL_ONGROUND;
if ((org_x != self.origin_x) || (org_y != self.origin_y))
org = self.origin;
else
self.origin = org;
v = org;
v_z = self.maxs_z + org_z + 1;
traceline (org, v, TRUE, self);
if ((self.waterlevel == 3) && (self.movetype == MOVETYPE_WALK))
self.flags = self.flags - FL_ONGROUND;
else if ((trace_plane_normal_z <= 0.7) && (trace_fraction != 1))
self.flags = self.flags - FL_ONGROUND;
else if (!droptofloor ())
self.flags = self.flags - FL_ONGROUND;
else if (org_z - self.origin_z < 2)
self.flags = self.flags | FL_ONGROUND;
else
self.flags = self.flags - FL_ONGROUND;
setorigin(self, org);
};
// Thanks to Alan Kivlin for this function
// modified heavily by me
float(vector dir) botCheckForStep =
{
local vector currentorigin, v;
local float currentflags, yaw, stepdistance, movedistance;
currentorigin = self.origin;
currentflags = self.flags;
self.flags = FL_ONGROUND | FL_PARTIALGROUND;
dir = normalize(dir);
dir_z = 0;
yaw = vectoyaw(dir);
if(walkmove(yaw, 3))
{
if(droptofloor ())
{
stepdistance = self.origin_z - currentorigin_z;
v = self.origin - currentorigin;
v_z = 0;
movedistance = vlen(v);
if((stepdistance > 0 && stepdistance <= 16) && movedistance != 0)
{
self.flags = currentflags | FL_PARTIALGROUND;
return 1;
}
}
}
self.flags = currentflags;
setorigin(self, currentorigin);
return 0;
};
// this is merely here to fix a problem with e3m5
void(vector dir) BruteForceStep =
{
local vector currentorigin;
local float currentflags, i = 0, len;
currentorigin = self.origin;
currentflags = self.flags;
len = vlen(dir);
if (len > 16)
dir = normalize(dir) * 16;
setorigin(self, currentorigin + dir);
while(i < 18 && !walkmove(0, 0))
{
self.origin_z = currentorigin_z + i;
i = i + 2;
}
self.flags = currentflags;
if (i >=18)
setorigin(self, currentorigin);
};
void() PostPhysics =
{
local vector obstr, org;
local float back, dst,cflags;
self = self.owner;
self.velocity = self.velocity - self.phys_obj.dest1 + self.phys_obj.velocity;
if (self.phys_obj.dest2 == self.origin)
{
setorigin(self, self.phys_obj.origin);
// might've been moved during other person's physics
// (teleporters / plats)
if (self.movetype == MOVETYPE_WALK)
{
if (self.phys_obj.dest1_x || self.phys_obj.dest1_y)
{
if ((self.flags & FL_ONGROUND) || (self.waterlevel <= 2))
{
obstr = self.phys_obj.movedir - self.origin;
obstr_z = 0;
if (vlen(obstr) > 0.1)
{
dst = vlen(obstr);
back = vectoyaw(obstr);
cflags = self.flags;
self.flags = self.flags | FL_PARTIALGROUND;
if(walkmove(back, dst))
{
self.flags = cflags;
self.phys_obj.dest1_z = 0;
self.velocity = self.velocity + self.phys_obj.dest1 - self.phys_obj.velocity;
}
else
{
if (dst > 1)
frik_obstructed(obstr, FALSE);
org = self.origin;
self.flags = cflags;
obstr = self.phys_obj.dest1;
obstr_x = 0;
if (!botCheckForStep(obstr))
{
obstr = self.phys_obj.dest1;
obstr_y = 0;
if (!botCheckForStep(obstr))
{
// if no steps were found, bot is really obstucted
BruteForceStep(self.phys_obj.dest1);
}
}
}
}
}
}
}
}
SV_CheckOnGround();
PlayerPostThink();
BotAI();
self.dmg_take = self.dmg_save = 0;
};
// Avoid calling BotAI and the physics at the same time
// Can trip the runaway loop counter
void() SV_FlyMove =
{
// This is nothing like the Quake function.
if (self.phys_obj == world)
{
self.phys_obj = find(world,classname,"phys_obj");
while (self.phys_obj.owner != self)
{
self.phys_obj = find(self.phys_obj,classname,"phys_obj");
if (self.phys_obj == world)
{
error("No physics entity spawned!\nMake sure BotInit was called\n");
}
}
}
setmodel (self.phys_obj, string_null);
self.phys_obj.movetype = MOVETYPE_STEP;
self.phys_obj.solid = SOLID_TRIGGER;
self.phys_obj.touch = RemoveThud;
setsize(self.phys_obj, self.mins, self.maxs);
self.phys_obj.dest2 = self.phys_obj.origin = self.origin;
self.phys_obj.watertype = 0;
self.phys_obj.movedir = self.origin + real_frametime * self.velocity;
self.phys_obj.dest1 = self.phys_obj.velocity = self.velocity;
self.phys_obj.velocity_z = self.phys_obj.velocity_z + sv_gravity * real_frametime;
self.phys_obj.flags = 0;
self.phys_obj.think = PostPhysics;
self.phys_obj.nextthink = time;
};
void() SV_Physics_Toss =
{
if (!SV_RunThink())
return;
if (self.flags & FL_ONGROUND)
{
self.velocity = '0 0 0';
BotAI();
return;
}
if (self.movetype != MOVETYPE_FLY)
SV_AddGravity(1);
self.angles = self.angles + real_frametime * self.avelocity;
SV_FlyMove();
};
void() SV_Physics_Client =
{
PlayerPreThink();
if (self.movetype == MOVETYPE_NONE)
{
if (!SV_RunThink())
return;
PlayerPostThink();
BotAI();
}
else if ((self.movetype == MOVETYPE_WALK) || (self.movetype == MOVETYPE_STEP))
{
if (!SV_RunThink())
return;
if (!(SV_CheckWater()) && (!(self.flags & FL_WATERJUMP)))
SV_AddGravity(1);
SV_FlyMove();
}
else if ((self.movetype == MOVETYPE_TOSS) || (self.movetype == MOVETYPE_BOUNCE))
{
SV_Physics_Toss();
}
else if (self.movetype == MOVETYPE_FLY)
{
if (!SV_RunThink())
return;
SV_FlyMove();
}
else if (self.movetype == MOVETYPE_NOCLIP)
{
if (!SV_RunThink())
return;
self.origin = self.origin + real_frametime * self.velocity;
PlayerPostThink();
BotAI();
}
else
error ("SV_Physics_Client: Bad Movetype (BOT)");
};