ai_dmnet.c

quakeIII源码这个不用我多说吧

	}
	bs->ainode = AINode_Seek_NBG;
}

/*
==================
AINode_Seek_NBG
==================
*/
int AINode_Seek_NBG(bot_state_t *bs) {
	bot_goal_t goal;
	vec3_t target, dir;
	bot_moveresult_t moveresult;

	if (BotIsObserver(bs)) {
		AIEnter_Observer(bs, "seek nbg: observer");
		return qfalse;
	}
	//if in the intermission
	if (BotIntermission(bs)) {
		AIEnter_Intermission(bs, "seek nbg: intermision");
		return qfalse;
	}
	//respawn if dead
	if (BotIsDead(bs)) {
		AIEnter_Respawn(bs, "seek nbg: bot dead");
		return qfalse;
	}
	//
	bs->tfl = TFL_DEFAULT;
	if (bot_grapple.integer) bs->tfl |= TFL_GRAPPLEHOOK;
	//if in lava or slime the bot should be able to get out
	if (BotInLavaOrSlime(bs)) bs->tfl |= TFL_LAVA|TFL_SLIME;
	//
	if (BotCanAndWantsToRocketJump(bs)) {
		bs->tfl |= TFL_ROCKETJUMP;
	}
	//map specific code
	BotMapScripts(bs);
	//no enemy
	bs->enemy = -1;
	//if the bot has no goal
	if (!trap_BotGetTopGoal(bs->gs, &goal)) bs->nbg_time = 0;
	//if the bot touches the current goal
	else if (BotReachedGoal(bs, &goal)) {
		BotChooseWeapon(bs);
		bs->nbg_time = 0;
	}
	//
	if (bs->nbg_time < FloatTime()) {
		//pop the current goal from the stack
		trap_BotPopGoal(bs->gs);
		//check for new nearby items right away
		//NOTE: we canNOT reset the check_time to zero because it would create an endless loop of node switches
		bs->check_time = FloatTime() + 0.05;
		//go back to seek ltg
		AIEnter_Seek_LTG(bs, "seek nbg: time out");
		return qfalse;
	}
	//predict obstacles
	if (BotAIPredictObstacles(bs, &goal))
		return qfalse;
	//initialize the movement state
	BotSetupForMovement(bs);
	//move towards the goal
	trap_BotMoveToGoal(&moveresult, bs->ms, &goal, bs->tfl);
	//if the movement failed
	if (moveresult.failure) {
		//reset the avoid reach, otherwise bot is stuck in current area
		trap_BotResetAvoidReach(bs->ms);
		bs->nbg_time = 0;
	}
	//check if the bot is blocked
	BotAIBlocked(bs, &moveresult, qtrue);
	//
	BotClearPath(bs, &moveresult);
	//if the viewangles are used for the movement
	if (moveresult.flags & (MOVERESULT_MOVEMENTVIEWSET|MOVERESULT_MOVEMENTVIEW|MOVERESULT_SWIMVIEW)) {
		VectorCopy(moveresult.ideal_viewangles, bs->ideal_viewangles);
	}
	//if waiting for something
	else if (moveresult.flags & MOVERESULT_WAITING) {
		if (random() < bs->thinktime * 0.8) {
			BotRoamGoal(bs, target);
			VectorSubtract(target, bs->origin, dir);
			vectoangles(dir, bs->ideal_viewangles);
			bs->ideal_viewangles[2] *= 0.5;
		}
	}
	else if (!(bs->flags & BFL_IDEALVIEWSET)) {
		if (!trap_BotGetSecondGoal(bs->gs, &goal)) trap_BotGetTopGoal(bs->gs, &goal);
		if (trap_BotMovementViewTarget(bs->ms, &goal, bs->tfl, 300, target)) {
			VectorSubtract(target, bs->origin, dir);
			vectoangles(dir, bs->ideal_viewangles);
		}
		//FIXME: look at cluster portals?
		else vectoangles(moveresult.movedir, bs->ideal_viewangles);
		bs->ideal_viewangles[2] *= 0.5;
	}
	//if the weapon is used for the bot movement
	if (moveresult.flags & MOVERESULT_MOVEMENTWEAPON) bs->weaponnum = moveresult.weapon;
	//if there is an enemy
	if (BotFindEnemy(bs, -1)) {
		if (BotWantsToRetreat(bs)) {
			//keep the current long term goal and retreat
			AIEnter_Battle_NBG(bs, "seek nbg: found enemy");
		}
		else {
			trap_BotResetLastAvoidReach(bs->ms);
			//empty the goal stack
			trap_BotEmptyGoalStack(bs->gs);
			//go fight
			AIEnter_Battle_Fight(bs, "seek nbg: found enemy");
		}
	}
	return qtrue;
}

/*
==================
AIEnter_Seek_LTG
==================
*/
void AIEnter_Seek_LTG(bot_state_t *bs, char *s) {
	bot_goal_t goal;
	char buf[144];

	if (trap_BotGetTopGoal(bs->gs, &goal)) {
		trap_BotGoalName(goal.number, buf, 144);
		BotRecordNodeSwitch(bs, "seek LTG", buf, s);
	}
	else {
		BotRecordNodeSwitch(bs, "seek LTG", "no goal", s);
	}
	bs->ainode = AINode_Seek_LTG;
}

/*
==================
AINode_Seek_LTG
==================
*/
int AINode_Seek_LTG(bot_state_t *bs)
{
	bot_goal_t goal;
	vec3_t target, dir;
	bot_moveresult_t moveresult;
	int range;
	//char buf[128];
	//bot_goal_t tmpgoal;

	if (BotIsObserver(bs)) {
		AIEnter_Observer(bs, "seek ltg: observer");
		return qfalse;
	}
	//if in the intermission
	if (BotIntermission(bs)) {
		AIEnter_Intermission(bs, "seek ltg: intermission");
		return qfalse;
	}
	//respawn if dead
	if (BotIsDead(bs)) {
		AIEnter_Respawn(bs, "seek ltg: bot dead");
		return qfalse;
	}
	//
	if (BotChat_Random(bs)) {
		bs->stand_time = FloatTime() + BotChatTime(bs);
		AIEnter_Stand(bs, "seek ltg: random chat");
		return qfalse;
	}
	//
	bs->tfl = TFL_DEFAULT;
	if (bot_grapple.integer) bs->tfl |= TFL_GRAPPLEHOOK;
	//if in lava or slime the bot should be able to get out
	if (BotInLavaOrSlime(bs)) bs->tfl |= TFL_LAVA|TFL_SLIME;
	//
	if (BotCanAndWantsToRocketJump(bs)) {
		bs->tfl |= TFL_ROCKETJUMP;
	}
	//map specific code
	BotMapScripts(bs);
	//no enemy
	bs->enemy = -1;
	//
	if (bs->killedenemy_time > FloatTime() - 2) {
		if (random() < bs->thinktime * 1) {
			trap_EA_Gesture(bs->client);
		}
	}
	//if there is an enemy
	if (BotFindEnemy(bs, -1)) {
		if (BotWantsToRetreat(bs)) {
			//keep the current long term goal and retreat
			AIEnter_Battle_Retreat(bs, "seek ltg: found enemy");
			return qfalse;
		}
		else {
			trap_BotResetLastAvoidReach(bs->ms);
			//empty the goal stack
			trap_BotEmptyGoalStack(bs->gs);
			//go fight
			AIEnter_Battle_Fight(bs, "seek ltg: found enemy");
			return qfalse;
		}
	}
	//
	BotTeamGoals(bs, qfalse);
	//get the current long term goal
	if (!BotLongTermGoal(bs, bs->tfl, qfalse, &goal)) {
		return qtrue;
	}
	//check for nearby goals periodicly
	if (bs->check_time < FloatTime()) {
		bs->check_time = FloatTime() + 0.5;
		//check if the bot wants to camp
		BotWantsToCamp(bs);
		//
		if (bs->ltgtype == LTG_DEFENDKEYAREA) range = 400;
		else range = 150;
		//
#ifdef CTF
		if (gametype == GT_CTF) {
			//if carrying a flag the bot shouldn't be distracted too much
			if (BotCTFCarryingFlag(bs))
				range = 50;
		}
#endif //CTF
#ifdef MISSIONPACK
		else if (gametype == GT_1FCTF) {
			if (Bot1FCTFCarryingFlag(bs))
				range = 50;
		}
		else if (gametype == GT_HARVESTER) {
			if (BotHarvesterCarryingCubes(bs))
				range = 80;
		}
#endif
		//
		if (BotNearbyGoal(bs, bs->tfl, &goal, range)) {
			trap_BotResetLastAvoidReach(bs->ms);
			//get the goal at the top of the stack
			//trap_BotGetTopGoal(bs->gs, &tmpgoal);
			//trap_BotGoalName(tmpgoal.number, buf, 144);
			//BotAI_Print(PRT_MESSAGE, "new nearby goal %s\n", buf);
			//time the bot gets to pick up the nearby goal item
			bs->nbg_time = FloatTime() + 4 + range * 0.01;
			AIEnter_Seek_NBG(bs, "ltg seek: nbg");
			return qfalse;
		}
	}
	//predict obstacles
	if (BotAIPredictObstacles(bs, &goal))
		return qfalse;
	//initialize the movement state
	BotSetupForMovement(bs);
	//move towards the goal
	trap_BotMoveToGoal(&moveresult, bs->ms, &goal, bs->tfl);
	//if the movement failed
	if (moveresult.failure) {
		//reset the avoid reach, otherwise bot is stuck in current area
		trap_BotResetAvoidReach(bs->ms);
		//BotAI_Print(PRT_MESSAGE, "movement failure %d\n", moveresult.traveltype);
		bs->ltg_time = 0;
	}
	//
	BotAIBlocked(bs, &moveresult, qtrue);
	//
	BotClearPath(bs, &moveresult);
	//if the viewangles are used for the movement
	if (moveresult.flags & (MOVERESULT_MOVEMENTVIEWSET|MOVERESULT_MOVEMENTVIEW|MOVERESULT_SWIMVIEW)) {
		VectorCopy(moveresult.ideal_viewangles, bs->ideal_viewangles);
	}
	//if waiting for something
	else if (moveresult.flags & MOVERESULT_WAITING) {
		if (random() < bs->thinktime * 0.8) {
			BotRoamGoal(bs, target);
			VectorSubtract(target, bs->origin, dir);
			vectoangles(dir, bs->ideal_viewangles);
			bs->ideal_viewangles[2] *= 0.5;
		}
	}
	else if (!(bs->flags & BFL_IDEALVIEWSET)) {
		if (trap_BotMovementViewTarget(bs->ms, &goal, bs->tfl, 300, target)) {
			VectorSubtract(target, bs->origin, dir);
			vectoangles(dir, bs->ideal_viewangles);
		}
		//FIXME: look at cluster portals?
		else if (VectorLengthSquared(moveresult.movedir)) {
			vectoangles(moveresult.movedir, bs->ideal_viewangles);
		}
		else if (random() < bs->thinktime * 0.8) {
			BotRoamGoal(bs, target);
			VectorSubtract(target, bs->origin, dir);
			vectoangles(dir, bs->ideal_viewangles);
			bs->ideal_viewangles[2] *= 0.5;
		}
		bs->ideal_viewangles[2] *= 0.5;
	}
	//if the weapon is used for the bot movement
	if (moveresult.flags & MOVERESULT_MOVEMENTWEAPON) bs->weaponnum = moveresult.weapon;
	//
	return qtrue;
}

/*
==================
AIEnter_Battle_Fight
==================
*/
void AIEnter_Battle_Fight(bot_state_t *bs, char *s) {
	BotRecordNodeSwitch(bs, "battle fight", "", s);
	trap_BotResetLastAvoidReach(bs->ms);
	bs->ainode = AINode_Battle_Fight;
}

/*
==================
AIEnter_Battle_Fight
==================
*/
void AIEnter_Battle_SuicidalFight(bot_state_t *bs, char *s) {
	BotRecordNodeSwitch(bs, "battle fight", "", s);
	trap_BotResetLastAvoidReach(bs->ms);
	bs->ainode = AINode_Battle_Fight;
	bs->flags |= BFL_FIGHTSUICIDAL;
}

/*
==================
AINode_Battle_Fight
==================
*/
int AINode_Battle_Fight(bot_state_t *bs) {
	int areanum;
	vec3_t target;
	aas_entityinfo_t entinfo;
	bot_moveresult_t moveresult;

	if (BotIsObserver(bs)) {
		AIEnter_Observer(bs, "battle fight: observer");
		return qfalse;
	}

	//if in the intermission
	if (BotIntermission(bs)) {
		AIEnter_Intermission(bs, "battle fight: intermission");
		return qfalse;
	}
	//respawn if dead
	if (BotIsDead(bs)) {
		AIEnter_Respawn(bs, "battle fight: bot dead");
		return qfalse;
	}
	//if there is another better enemy
	if (BotFindEnemy(bs, bs->enemy)) {
#ifdef DEBUG
		BotAI_Print(PRT_MESSAGE, "found new better enemy\n");
#endif
	}
	//if no enemy
	if (bs->enemy < 0) {
		AIEnter_Seek_LTG(bs, "battle fight: no enemy");
		return qfalse;
	}
	//
	BotEntityInfo(bs->enemy, &entinfo);
	//if the enemy is dead
	if (bs->enemydeath_time) {
		if (bs->enemydeath_time < FloatTime() - 1.0) {
			bs->enemydeath_time = 0;
			if (bs->enemysuicide) {
				BotChat_EnemySuicide(bs);
			}
			if (bs->lastkilledplayer == bs->enemy && BotChat_Kill(bs)) {
				bs->stand_time = FloatTime() + BotChatTime(bs);
				AIEnter_Stand(bs, "battle fight: enemy dead");
			}
			else {
				bs->ltg_time = 0;
				AIEnter_Seek_LTG(bs, "battle fight: enemy dead");
			}
			return qfalse;
		}
	}
	else {
		if (EntityIsDead(&entinfo)) {
			bs->enemydeath_time = FloatTime();
		}
	}
	//if the enemy is invisible and not shooting the bot looses track easily
	if (EntityIsInvisible(&entinfo) && !EntityIsShooting(&entinfo)) {
		if (random() < 0.2) {
			AIEnter_Seek_LTG(bs, "battle fight: invisible");
			return qfalse;
		}
	}
	//
	VectorCopy(entinfo.origin, target);
	// if not a player enemy
	if (bs->enemy >= MAX_CLIENTS) {
#ifdef MISSIONPACK
		// if attacking an obelisk
		if ( bs->enemy == redobelisk.entitynum ||
			bs->enemy == blueobelisk.entitynum ) {
			target[2] += 16;
		}
#endif
	}
	//update the reachability area and origin if possible
	areanum = BotPointAreaNum(target);