initial commit

Author: engineerOfLies

g_ai.c

@@ -0,0 +1,156 @@
+#include "g_local.h"
+
+void UpdateChaseCam(edict_t *ent)
+{
+	vec3_t o, ownerv, goal;
+	edict_t *targ;
+	vec3_t forward, right;
+	trace_t trace;
+	int i;
+	vec3_t oldgoal;
+	vec3_t angles;
+
+	// is our chase target gone?
+	if (!ent->client->chase_target->inuse
+		|| ent->client->chase_target->client->resp.spectator) {
+		edict_t *old = ent->client->chase_target;
+		ChaseNext(ent);
+		if (ent->client->chase_target == old) {
+			ent->client->chase_target = NULL;
+			ent->client->ps.pmove.pm_flags &= ~PMF_NO_PREDICTION;
+			return;
+		}
+	}
+
+	targ = ent->client->chase_target;
+
+	VectorCopy(targ->s.origin, ownerv);
+	VectorCopy(ent->s.origin, oldgoal);
+
+	ownerv[2] += targ->viewheight;
+
+	VectorCopy(targ->client->v_angle, angles);
+	if (angles[PITCH] > 56)
+		angles[PITCH] = 56;
+	AngleVectors (angles, forward, right, NULL);
+	VectorNormalize(forward);
+	VectorMA(ownerv, -30, forward, o);
+
+	if (o[2] < targ->s.origin[2] + 20)
+		o[2] = targ->s.origin[2] + 20;
+
+	// jump animation lifts
+	if (!targ->groundentity)
+		o[2] += 16;
+
+	trace = gi.trace(ownerv, vec3_origin, vec3_origin, o, targ, MASK_SOLID);
+
+	VectorCopy(trace.endpos, goal);
+
+	VectorMA(goal, 2, forward, goal);
+
+	// pad for floors and ceilings
+	VectorCopy(goal, o);
+	o[2] += 6;
+	trace = gi.trace(goal, vec3_origin, vec3_origin, o, targ, MASK_SOLID);
+	if (trace.fraction < 1) {
+		VectorCopy(trace.endpos, goal);
+		goal[2] -= 6;
+	}
+
+	VectorCopy(goal, o);
+	o[2] -= 6;
+	trace = gi.trace(goal, vec3_origin, vec3_origin, o, targ, MASK_SOLID);
+	if (trace.fraction < 1) {
+		VectorCopy(trace.endpos, goal);
+		goal[2] += 6;
+	}
+
+	if (targ->deadflag)
+		ent->client->ps.pmove.pm_type = PM_DEAD;
+	else
+		ent->client->ps.pmove.pm_type = PM_FREEZE;
+
+	VectorCopy(goal, ent->s.origin);
+	for (i=0 ; i<3 ; i++)
+		ent->client->ps.pmove.delta_angles[i] = ANGLE2SHORT(targ->client->v_angle[i] - ent->client->resp.cmd_angles[i]);
+
+	if (targ->deadflag) {
+		ent->client->ps.viewangles[ROLL] = 40;
+		ent->client->ps.viewangles[PITCH] = -15;
+		ent->client->ps.viewangles[YAW] = targ->client->killer_yaw;
+	} else {
+		VectorCopy(targ->client->v_angle, ent->client->ps.viewangles);
+		VectorCopy(targ->client->v_angle, ent->client->v_angle);
+	}
+
+	ent->viewheight = 0;
+	ent->client->ps.pmove.pm_flags |= PMF_NO_PREDICTION;
+	gi.linkentity(ent);
+}
+
+void ChaseNext(edict_t *ent)
+{
+	int i;
+	edict_t *e;
+
+	if (!ent->client->chase_target)
+		return;
+
+	i = ent->client->chase_target - g_edicts;
+	do {
+		i++;
+		if (i > maxclients->value)
+			i = 1;
+		e = g_edicts + i;
+		if (!e->inuse)
+			continue;
+		if (!e->client->resp.spectator)
+			break;
+	} while (e != ent->client->chase_target);
+
+	ent->client->chase_target = e;
+	ent->client->update_chase = true;
+}
+
+void ChasePrev(edict_t *ent)
+{
+	int i;
+	edict_t *e;
+
+	if (!ent->client->chase_target)
+		return;
+
+	i = ent->client->chase_target - g_edicts;
+	do {
+		i--;
+		if (i < 1)
+			i = maxclients->value;
+		e = g_edicts + i;
+		if (!e->inuse)
+			continue;
+		if (!e->client->resp.spectator)
+			break;
+	} while (e != ent->client->chase_target);
+
+	ent->client->chase_target = e;
+	ent->client->update_chase = true;
+}
+
+void GetChaseTarget(edict_t *ent)
+{
+	int i;
+	edict_t *other;
+
+	for (i = 1; i <= maxclients->value; i++) {
+		other = g_edicts + i;
+		if (other->inuse && !other->client->resp.spectator) {
+			ent->client->chase_target = other;
+			ent->client->update_chase = true;
+			UpdateChaseCam(ent);
+			return;
+		}
+	}
+	gi.centerprintf(ent, "No other players to chase.");
+}
+