// weapon.cpp: all shooting and effects code
#include "cube.h"
struct guninfo {
short sound, attackdelay, damage, projspeed, part, kickamount;
OFString *name;
};
static const int MONSTERDAMAGEFACTOR = 4;
static const int SGRAYS = 20;
static const float SGSPREAD = 2;
static OFVector3D sg[SGRAYS];
static const guninfo guns[NUMGUNS] = {
{ S_PUNCH1, 250, 50, 0, 0, 1, @"fist" },
{ S_SG, 1400, 10, 0, 0, 20, @"shotgun" }, // *SGRAYS
{ S_CG, 100, 30, 0, 0, 7, @"chaingun" },
{ S_RLFIRE, 800, 120, 80, 0, 10, @"rocketlauncher" },
{ S_RIFLE, 1500, 100, 0, 0, 30, @"rifle" },
{ S_FLAUNCH, 200, 20, 50, 4, 1, @"fireball" },
{ S_ICEBALL, 200, 40, 30, 6, 1, @"iceball" },
{ S_SLIMEBALL, 200, 30, 160, 7, 1, @"slimeball" },
{ S_PIGR1, 250, 50, 0, 0, 1, @"bite" },
};
void
selectgun(int a, int b, int c)
{
if (a < -1 || b < -1 || c < -1 || a >= NUMGUNS || b >= NUMGUNS ||
c >= NUMGUNS)
return;
int s = player1->gunselect;
if (a >= 0 && s != a && player1->ammo[a])
s = a;
else if (b >= 0 && s != b && player1->ammo[b])
s = b;
else if (c >= 0 && s != c && player1->ammo[c])
s = c;
else if (s != GUN_RL && player1->ammo[GUN_RL])
s = GUN_RL;
else if (s != GUN_CG && player1->ammo[GUN_CG])
s = GUN_CG;
else if (s != GUN_SG && player1->ammo[GUN_SG])
s = GUN_SG;
else if (s != GUN_RIFLE && player1->ammo[GUN_RIFLE])
s = GUN_RIFLE;
else
s = GUN_FIST;
if (s != player1->gunselect)
playsoundc(S_WEAPLOAD);
player1->gunselect = s;
// conoutf(@"%@ selected", (int)guns[s].name);
}
int
reloadtime(int gun)
{
return guns[gun].attackdelay;
}
void
weapon(OFString *a1, OFString *a2, OFString *a3)
{
selectgun((a1.length > 0 ? (int)a1.longLongValue : -1),
(a2.length > 0 ? (int)a2.longLongValue : -1),
(a3.length > 0 ? (int)a3.longLongValue : -1));
}
COMMAND(weapon, ARG_3STR)
void
createrays(OFVector3D &from,
OFVector3D &to) // create random spread of rays for the shotgun
{
vdist(dist, dvec, from, to);
float f = dist * SGSPREAD / 1000;
loopi(SGRAYS)
{
#define RNDD (rnd(101) - 50) * f
OFVector3D r = OFMakeVector3D(RNDD, RNDD, RNDD);
sg[i] = to;
vadd(sg[i], r);
}
}
bool
intersect(dynent *d, OFVector3D &from,
OFVector3D &to) // if lineseg hits entity bounding box
{
OFVector3D v = to, w = d->o, *p;
vsub(v, from);
vsub(w, from);
float c1 = dotprod(w, v);
if (c1 <= 0)
p = &from;
else {
float c2 = dotprod(v, v);
if (c2 <= c1)
p = &to;
else {
float f = c1 / c2;
vmul(v, f);
vadd(v, from);
p = &v;
}
}
return (p->x <= d->o.x + d->radius && p->x >= d->o.x - d->radius &&
p->y <= d->o.y + d->radius && p->y >= d->o.y - d->radius &&
p->z <= d->o.z + d->aboveeye && p->z >= d->o.z - d->eyeheight);
}
OFString *
playerincrosshair()
{
if (demoplayback)
return NULL;
loopv(players)
{
dynent *o = players[i];
if (!o)
continue;
if (intersect(o, player1->o, worldpos))
return @(o->name);
}
return nil;
}
const int MAXPROJ = 100;
struct projectile {
OFVector3D o, to;
float speed;
dynent *owner;
int gun;
bool inuse, local;
} projs[MAXPROJ];
void
projreset()
{
loopi(MAXPROJ) projs[i].inuse = false;
}
void
newprojectile(OFVector3D &from, OFVector3D &to, float speed, bool local,
dynent *owner, int gun)
{
loopi(MAXPROJ)
{
projectile *p = &projs[i];
if (p->inuse)
continue;
p->inuse = true;
p->o = from;
p->to = to;
p->speed = speed;
p->local = local;
p->owner = owner;
p->gun = gun;
return;
}
}
void
hit(int target, int damage, dynent *d, dynent *at)
{
if (d == player1)
selfdamage(damage, at == player1 ? -1 : -2, at);
else if (d->monsterstate)
monsterpain(d, damage, at);
else {
addmsg(1, 4, SV_DAMAGE, target, damage, d->lifesequence);
playsound(S_PAIN1 + rnd(5), &d->o);
}
particle_splash(3, damage, 1000, d->o);
demodamage(damage, d->o);
}
const float RL_RADIUS = 5;
const float RL_DAMRAD = 7; // hack
void
radialeffect(dynent *o, OFVector3D &v, int cn, int qdam, dynent *at)
{
if (o->state != CS_ALIVE)
return;
vdist(dist, temp, v, o->o);
dist -= 2; // account for eye distance imprecision
if (dist < RL_DAMRAD) {
if (dist < 0)
dist = 0;
int damage = (int)(qdam * (1 - (dist / RL_DAMRAD)));
hit(cn, damage, o, at);
vmul(temp, (RL_DAMRAD - dist) * damage / 800);
vadd(o->vel, temp);
}
}
void
splash(projectile *p, OFVector3D &v, OFVector3D &vold, int notthisplayer,
int notthismonster, int qdam)
{
particle_splash(0, 50, 300, v);
p->inuse = false;
if (p->gun != GUN_RL) {
playsound(S_FEXPLODE, &v);
// no push?
} else {
playsound(S_RLHIT, &v);
newsphere(v, RL_RADIUS, 0);
dodynlight(vold, v, 0, 0, p->owner);
if (!p->local)
return;
radialeffect(player1, v, -1, qdam, p->owner);
loopv(players)
{
if (i == notthisplayer)
continue;
dynent *o = players[i];
if (!o)
continue;
radialeffect(o, v, i, qdam, p->owner);
}
dvector &mv = getmonsters();
loopv(mv) if (i != notthismonster)
radialeffect(mv[i], v, i, qdam, p->owner);
}
}
inline void
projdamage(dynent *o, projectile *p, OFVector3D &v, int i, int im, int qdam)
{
if (o->state != CS_ALIVE)
return;
if (intersect(o, p->o, v)) {
splash(p, v, p->o, i, im, qdam);
hit(i, qdam, o, p->owner);
}
}
void
moveprojectiles(float time)
{
loopi(MAXPROJ)
{
projectile *p = &projs[i];
if (!p->inuse)
continue;
int qdam = guns[p->gun].damage * (p->owner->quadmillis ? 4 : 1);
if (p->owner->monsterstate)
qdam /= MONSTERDAMAGEFACTOR;
vdist(dist, v, p->o, p->to);
float dtime = dist * 1000 / p->speed;
if (time > dtime)
dtime = time;
vmul(v, time / dtime);
vadd(v, p->o) if (p->local)
{
loopv(players)
{
dynent *o = players[i];
if (!o)
continue;
projdamage(o, p, v, i, -1, qdam);
}
if (p->owner != player1)
projdamage(player1, p, v, -1, -1, qdam);
dvector &mv = getmonsters();
loopv(mv) if (!vreject(mv[i]->o, v, 10.0f) &&
mv[i] != p->owner)
projdamage(mv[i], p, v, -1, i, qdam);
}
if (p->inuse) {
if (time == dtime)
splash(p, v, p->o, -1, -1, qdam);
else {
if (p->gun == GUN_RL) {
dodynlight(p->o, v, 0, 255, p->owner);
particle_splash(5, 2, 200, v);
} else {
particle_splash(1, 1, 200, v);
particle_splash(
guns[p->gun].part, 1, 1, v);
}
}
}
p->o = v;
}
}
void
shootv(int gun, OFVector3D &from, OFVector3D &to, dynent *d,
bool local) // create visual effect from a shot
{
playsound(guns[gun].sound, d == player1 ? NULL : &d->o);
int pspeed = 25;
switch (gun) {
case GUN_FIST:
break;
case GUN_SG: {
loopi(SGRAYS) particle_splash(0, 5, 200, sg[i]);
break;
}
case GUN_CG:
particle_splash(0, 100, 250, to);
// particle_trail(1, 10, from, to);
break;
case GUN_RL:
case GUN_FIREBALL:
case GUN_ICEBALL:
case GUN_SLIMEBALL:
pspeed = guns[gun].projspeed;
if (d->monsterstate)
pspeed /= 2;
newprojectile(from, to, (float)pspeed, local, d, gun);
break;
case GUN_RIFLE:
particle_splash(0, 50, 200, to);
particle_trail(1, 500, from, to);
break;
}
}
void
hitpush(int target, int damage, dynent *d, dynent *at, OFVector3D &from,
OFVector3D &to)
{
hit(target, damage, d, at);
vdist(dist, v, from, to);
vmul(v, damage / dist / 50);
vadd(d->vel, v);
}
void
raydamage(dynent *o, OFVector3D &from, OFVector3D &to, dynent *d, int i)
{
if (o->state != CS_ALIVE)
return;
int qdam = guns[d->gunselect].damage;
if (d->quadmillis)
qdam *= 4;
if (d->monsterstate)
qdam /= MONSTERDAMAGEFACTOR;
if (d->gunselect == GUN_SG) {
int damage = 0;
loop(r, SGRAYS) if (intersect(o, from, sg[r])) damage += qdam;
if (damage)
hitpush(i, damage, o, d, from, to);
} else if (intersect(o, from, to))
hitpush(i, qdam, o, d, from, to);
}
void
shoot(dynent *d, OFVector3D &targ)
{
int attacktime = lastmillis - d->lastaction;
if (attacktime < d->gunwait)
return;
d->gunwait = 0;
if (!d->attacking)
return;
d->lastaction = lastmillis;
d->lastattackgun = d->gunselect;
if (!d->ammo[d->gunselect]) {
playsoundc(S_NOAMMO);
d->gunwait = 250;
d->lastattackgun = -1;
return;
}
if (d->gunselect)
d->ammo[d->gunselect]--;
OFVector3D from = d->o;
OFVector3D to = targ;
from.z -= 0.2f; // below eye
vdist(dist, unitv, from, to);
vdiv(unitv, dist);
OFVector3D kickback = unitv;
vmul(kickback, guns[d->gunselect].kickamount * -0.01f);
vadd(d->vel, kickback);
if (d->pitch < 80.0f)
d->pitch += guns[d->gunselect].kickamount * 0.05f;
if (d->gunselect == GUN_FIST || d->gunselect == GUN_BITE) {
vmul(unitv, 3); // punch range
to = from;
vadd(to, unitv);
}
if (d->gunselect == GUN_SG)
createrays(from, to);
if (d->quadmillis && attacktime > 200)
playsoundc(S_ITEMPUP);
shootv(d->gunselect, from, to, d, true);
if (!d->monsterstate)
addmsg(1, 8, SV_SHOT, d->gunselect, (int)(from.x * DMF),
(int)(from.y * DMF), (int)(from.z * DMF), (int)(to.x * DMF),
(int)(to.y * DMF), (int)(to.z * DMF));
d->gunwait = guns[d->gunselect].attackdelay;
if (guns[d->gunselect].projspeed)
return;
loopv(players)
{
dynent *o = players[i];
if (!o)
continue;
raydamage(o, from, to, d, i);
}
dvector &v = getmonsters();
loopv(v) if (v[i] != d) raydamage(v[i], from, to, d, -2);
if (d->monsterstate)
raydamage(player1, from, to, d, -1);
}