ai_dmnet.c

quakeIII源码这个不用我多说吧

	trap_BotResetAvoidReach(bs->ms);
	//if the bot wants to chat
	if (BotChat_Death(bs)) {
		bs->respawn_time = FloatTime() + BotChatTime(bs);
		bs->respawnchat_time = FloatTime();
	}
	else {
		bs->respawn_time = FloatTime() + 1 + random();
		bs->respawnchat_time = 0;
	}
	//set respawn state
	bs->respawn_wait = qfalse;
	bs->ainode = AINode_Respawn;
}

/*
==================
AINode_Respawn
==================
*/
int AINode_Respawn(bot_state_t *bs) {
	// if waiting for the actual respawn
	if (bs->respawn_wait) {
		if (!BotIsDead(bs)) {
			AIEnter_Seek_LTG(bs, "respawn: respawned");
		}
		else {
			trap_EA_Respawn(bs->client);
		}
	}
	else if (bs->respawn_time < FloatTime()) {
		// wait until respawned
		bs->respawn_wait = qtrue;
		// elementary action respawn
		trap_EA_Respawn(bs->client);
		//
		if (bs->respawnchat_time) {
			trap_BotEnterChat(bs->cs, 0, bs->chatto);
			bs->enemy = -1;
		}
	}
	if (bs->respawnchat_time && bs->respawnchat_time < FloatTime() - 0.5) {
		trap_EA_Talk(bs->client);
	}
	//
	return qtrue;
}

/*
==================
BotSelectActivateWeapon
==================
*/
int BotSelectActivateWeapon(bot_state_t *bs) {
	//
	if (bs->inventory[INVENTORY_MACHINEGUN] > 0 && bs->inventory[INVENTORY_BULLETS] > 0)
		return WEAPONINDEX_MACHINEGUN;
	else if (bs->inventory[INVENTORY_SHOTGUN] > 0 && bs->inventory[INVENTORY_SHELLS] > 0)
		return WEAPONINDEX_SHOTGUN;
	else if (bs->inventory[INVENTORY_PLASMAGUN] > 0 && bs->inventory[INVENTORY_CELLS] > 0)
		return WEAPONINDEX_PLASMAGUN;
	else if (bs->inventory[INVENTORY_LIGHTNING] > 0 && bs->inventory[INVENTORY_LIGHTNINGAMMO] > 0)
		return WEAPONINDEX_LIGHTNING;
#ifdef MISSIONPACK
	else if (bs->inventory[INVENTORY_CHAINGUN] > 0 && bs->inventory[INVENTORY_BELT] > 0)
		return WEAPONINDEX_CHAINGUN;
	else if (bs->inventory[INVENTORY_NAILGUN] > 0 && bs->inventory[INVENTORY_NAILS] > 0)
		return WEAPONINDEX_NAILGUN;
#endif
	else if (bs->inventory[INVENTORY_RAILGUN] > 0 && bs->inventory[INVENTORY_SLUGS] > 0)
		return WEAPONINDEX_RAILGUN;
	else if (bs->inventory[INVENTORY_ROCKETLAUNCHER] > 0 && bs->inventory[INVENTORY_ROCKETS] > 0)
		return WEAPONINDEX_ROCKET_LAUNCHER;
	else if (bs->inventory[INVENTORY_BFG10K] > 0 && bs->inventory[INVENTORY_BFGAMMO] > 0)
		return WEAPONINDEX_BFG;
	else {
		return -1;
	}
}

/*
==================
BotClearPath

 try to deactivate obstacles like proximity mines on the bot's path
==================
*/
void BotClearPath(bot_state_t *bs, bot_moveresult_t *moveresult) {
	int i, bestmine;
	float dist, bestdist;
	vec3_t target, dir;
	bsp_trace_t bsptrace;
	entityState_t state;

	// if there is a dead body wearing kamikze nearby
	if (bs->kamikazebody) {
		// if the bot's view angles and weapon are not used for movement
		if ( !(moveresult->flags & (MOVERESULT_MOVEMENTVIEW | MOVERESULT_MOVEMENTWEAPON)) ) {
			//
			BotAI_GetEntityState(bs->kamikazebody, &state);
			VectorCopy(state.pos.trBase, target);
			target[2] += 8;
			VectorSubtract(target, bs->eye, dir);
			vectoangles(dir, moveresult->ideal_viewangles);
			//
			moveresult->weapon = BotSelectActivateWeapon(bs);
			if (moveresult->weapon == -1) {
				// FIXME: run away!
				moveresult->weapon = 0;
			}
			if (moveresult->weapon) {
				//
				moveresult->flags |= MOVERESULT_MOVEMENTWEAPON | MOVERESULT_MOVEMENTVIEW;
				// if holding the right weapon
				if (bs->cur_ps.weapon == moveresult->weapon) {
					// if the bot is pretty close with it's aim
					if (InFieldOfVision(bs->viewangles, 20, moveresult->ideal_viewangles)) {
						//
						BotAI_Trace(&bsptrace, bs->eye, NULL, NULL, target, bs->entitynum, MASK_SHOT);
						// if the mine is visible from the current position
						if (bsptrace.fraction >= 1.0 || bsptrace.ent == state.number) {
							// shoot at the mine
							trap_EA_Attack(bs->client);
						}
					}
				}
			}
		}
	}
	if (moveresult->flags & MOVERESULT_BLOCKEDBYAVOIDSPOT) {
		bs->blockedbyavoidspot_time = FloatTime() + 5;
	}
	// if blocked by an avoid spot and the view angles and weapon are used for movement
	if (bs->blockedbyavoidspot_time > FloatTime() &&
		!(moveresult->flags & (MOVERESULT_MOVEMENTVIEW | MOVERESULT_MOVEMENTWEAPON)) ) {
		bestdist = 300;
		bestmine = -1;
		for (i = 0; i < bs->numproxmines; i++) {
			BotAI_GetEntityState(bs->proxmines[i], &state);
			VectorSubtract(state.pos.trBase, bs->origin, dir);
			dist = VectorLength(dir);
			if (dist < bestdist) {
				bestdist = dist;
				bestmine = i;
			}
		}
		if (bestmine != -1) {
			//
			// state->generic1 == TEAM_RED || state->generic1 == TEAM_BLUE
			//
			// deactivate prox mines in the bot's path by shooting
			// rockets or plasma cells etc. at them
			BotAI_GetEntityState(bs->proxmines[bestmine], &state);
			VectorCopy(state.pos.trBase, target);
			target[2] += 2;
			VectorSubtract(target, bs->eye, dir);
			vectoangles(dir, moveresult->ideal_viewangles);
			// if the bot has a weapon that does splash damage
			if (bs->inventory[INVENTORY_PLASMAGUN] > 0 && bs->inventory[INVENTORY_CELLS] > 0)
				moveresult->weapon = WEAPONINDEX_PLASMAGUN;
			else if (bs->inventory[INVENTORY_ROCKETLAUNCHER] > 0 && bs->inventory[INVENTORY_ROCKETS] > 0)
				moveresult->weapon = WEAPONINDEX_ROCKET_LAUNCHER;
			else if (bs->inventory[INVENTORY_BFG10K] > 0 && bs->inventory[INVENTORY_BFGAMMO] > 0)
				moveresult->weapon = WEAPONINDEX_BFG;
			else {
				moveresult->weapon = 0;
			}
			if (moveresult->weapon) {
				//
				moveresult->flags |= MOVERESULT_MOVEMENTWEAPON | MOVERESULT_MOVEMENTVIEW;
				// if holding the right weapon
				if (bs->cur_ps.weapon == moveresult->weapon) {
					// if the bot is pretty close with it's aim
					if (InFieldOfVision(bs->viewangles, 20, moveresult->ideal_viewangles)) {
						//
						BotAI_Trace(&bsptrace, bs->eye, NULL, NULL, target, bs->entitynum, MASK_SHOT);
						// if the mine is visible from the current position
						if (bsptrace.fraction >= 1.0 || bsptrace.ent == state.number) {
							// shoot at the mine
							trap_EA_Attack(bs->client);
						}
					}
				}
			}
		}
	}
}

/*
==================
AIEnter_Seek_ActivateEntity
==================
*/
void AIEnter_Seek_ActivateEntity(bot_state_t *bs, char *s) {
	BotRecordNodeSwitch(bs, "activate entity", "", s);
	bs->ainode = AINode_Seek_ActivateEntity;
}

/*
==================
AINode_Seek_Activate_Entity
==================
*/
int AINode_Seek_ActivateEntity(bot_state_t *bs) {
	bot_goal_t *goal;
	vec3_t target, dir, ideal_viewangles;
	bot_moveresult_t moveresult;
	int targetvisible;
	bsp_trace_t bsptrace;
	aas_entityinfo_t entinfo;

	if (BotIsObserver(bs)) {
		BotClearActivateGoalStack(bs);
		AIEnter_Observer(bs, "active entity: observer");
		return qfalse;
	}
	//if in the intermission
	if (BotIntermission(bs)) {
		BotClearActivateGoalStack(bs);
		AIEnter_Intermission(bs, "activate entity: intermission");
		return qfalse;
	}
	//respawn if dead
	if (BotIsDead(bs)) {
		BotClearActivateGoalStack(bs);
		AIEnter_Respawn(bs, "activate entity: 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;
	// map specific code
	BotMapScripts(bs);
	// no enemy
	bs->enemy = -1;
	// if the bot has no activate goal
	if (!bs->activatestack) {
		BotClearActivateGoalStack(bs);
		AIEnter_Seek_NBG(bs, "activate entity: no goal");
		return qfalse;
	}
	//
	goal = &bs->activatestack->goal;
	// initialize target being visible to false
	targetvisible = qfalse;
	// if the bot has to shoot at a target to activate something
	if (bs->activatestack->shoot) {
		//
		BotAI_Trace(&bsptrace, bs->eye, NULL, NULL, bs->activatestack->target, bs->entitynum, MASK_SHOT);
		// if the shootable entity is visible from the current position
		if (bsptrace.fraction >= 1.0 || bsptrace.ent == goal->entitynum) {
			targetvisible = qtrue;
			// if holding the right weapon
			if (bs->cur_ps.weapon == bs->activatestack->weapon) {
				VectorSubtract(bs->activatestack->target, bs->eye, dir);
				vectoangles(dir, ideal_viewangles);
				// if the bot is pretty close with it's aim
				if (InFieldOfVision(bs->viewangles, 20, ideal_viewangles)) {
					trap_EA_Attack(bs->client);
				}
			}
		}
	}
	// if the shoot target is visible
	if (targetvisible) {
		// get the entity info of the entity the bot is shooting at
		BotEntityInfo(goal->entitynum, &entinfo);
		// if the entity the bot shoots at moved
		if (!VectorCompare(bs->activatestack->origin, entinfo.origin)) {
#ifdef DEBUG
			BotAI_Print(PRT_MESSAGE, "hit shootable button or trigger\n");
#endif //DEBUG
			bs->activatestack->time = 0;
		}
		// if the activate goal has been activated or the bot takes too long
		if (bs->activatestack->time < FloatTime()) {
			BotPopFromActivateGoalStack(bs);
			// if there are more activate goals on the stack
			if (bs->activatestack) {
				bs->activatestack->time = FloatTime() + 10;
				return qfalse;
			}
			AIEnter_Seek_NBG(bs, "activate entity: time out");
			return qfalse;
		}
		memset(&moveresult, 0, sizeof(bot_moveresult_t));
	}
	else {
		// if the bot has no goal
		if (!goal) {
			bs->activatestack->time = 0;
		}
		// if the bot does not have a shoot goal
		else if (!bs->activatestack->shoot) {
			//if the bot touches the current goal
			if (trap_BotTouchingGoal(bs->origin, goal)) {
#ifdef DEBUG
				BotAI_Print(PRT_MESSAGE, "touched button or trigger\n");
#endif //DEBUG
				bs->activatestack->time = 0;
			}
		}
		// if the activate goal has been activated or the bot takes too long
		if (bs->activatestack->time < FloatTime()) {
			BotPopFromActivateGoalStack(bs);
			// if there are more activate goals on the stack
			if (bs->activatestack) {
				bs->activatestack->time = FloatTime() + 10;
				return qfalse;
			}
			AIEnter_Seek_NBG(bs, "activate entity: activated");
			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->activatestack->time = 0;
		}
		//check if the bot is blocked
		BotAIBlocked(bs, &moveresult, qtrue);
	}
	//
	BotClearPath(bs, &moveresult);
	// if the bot has to shoot to activate
	if (bs->activatestack->shoot) {
		// if the view angles aren't yet used for the movement
		if (!(moveresult.flags & MOVERESULT_MOVEMENTVIEW)) {
			VectorSubtract(bs->activatestack->target, bs->eye, dir);
			vectoangles(dir, moveresult.ideal_viewangles);
			moveresult.flags |= MOVERESULT_MOVEMENTVIEW;
		}
		// if there's no weapon yet used for the movement
		if (!(moveresult.flags & MOVERESULT_MOVEMENTWEAPON)) {
			moveresult.flags |= MOVERESULT_MOVEMENTWEAPON;
			//
			bs->activatestack->weapon = BotSelectActivateWeapon(bs);
			if (bs->activatestack->weapon == -1) {
				//FIXME: find a decent weapon first
				bs->activatestack->weapon = 0;
			}
			moveresult.weapon = bs->activatestack->weapon;
		}
	}
	// if the ideal view angles are set for 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);
		}
		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, "activate entity: found enemy");
		}
		else {
			trap_BotResetLastAvoidReach(bs->ms);
			//empty the goal stack
			trap_BotEmptyGoalStack(bs->gs);
			//go fight
			AIEnter_Battle_Fight(bs, "activate entity: found enemy");
		}
		BotClearActivateGoalStack(bs);
	}
	return qtrue;
}

/*
==================
AIEnter_Seek_NBG
==================
*/
void AIEnter_Seek_NBG(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 NBG", buf, s);
	}
	else {
		BotRecordNodeSwitch(bs, "seek NBG", "no goal", s);