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377 lines
7.4 KiB
377 lines
7.4 KiB
package mightypork.rogue.world.entity.entities;
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import java.io.IOException;
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import java.util.List;
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import mightypork.gamecore.util.annot.DefaultImpl;
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import mightypork.gamecore.util.ion.IonBundle;
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import mightypork.gamecore.util.math.algo.Coord;
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import mightypork.gamecore.util.math.algo.Step;
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import mightypork.gamecore.util.math.algo.pathfinding.PathFinder;
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import mightypork.gamecore.util.math.algo.pathfinding.PathFinderProxy;
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import mightypork.rogue.world.entity.AiTimer;
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import mightypork.rogue.world.entity.Entity;
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import mightypork.rogue.world.entity.EntityModule;
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import mightypork.rogue.world.entity.EntityType;
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import mightypork.rogue.world.entity.modules.EntityMoveListener;
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import mightypork.rogue.world.tile.Tile;
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public class MonsterAi extends EntityModule implements EntityMoveListener {
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private boolean sleeping = true;
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private boolean chasing = false;
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private final AiTimer timerFindPrey = new AiTimer(3) {
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@Override
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public void run()
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{
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if (chasing) return;
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//System.out.println("Mob looks around.");
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lookForTarget();
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}
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};
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private final AiTimer timerSleepStart = new AiTimer(10) {
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@Override
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public void run()
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{
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if (chasing) return;
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//System.out.println("Mob going to sleep");
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sleeping = true;
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}
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};
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private final AiTimer timerAttack = new AiTimer(3) {
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@Override
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public void run()
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{
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if (!chasing) return;
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final Entity prey = getPreyEntity();
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if (prey == null || prey.isDead()) {
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//System.out.println("prey dead?");
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return;
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}
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//System.out.println("Timed prey attack");
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attackPrey(prey);
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}
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};
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private PathFinder noDoorPf;
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/** Prey id */
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private int preyId = -1;
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public MonsterAi(final Entity entity)
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{
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super(entity);
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noDoorPf = new PathFinderProxy(entity.getPathFinder()) {
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@Override
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public boolean isAccessible(Coord pos)
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{
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final Tile t = entity.getLevel().getTile(pos);
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if (t.isDoor()) return false;
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return super.isAccessible(pos);
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}
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};
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timerAttack.start();
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timerFindPrey.start();
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timerSleepStart.start();
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}
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@Override
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public void onStepFinished()
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{
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//System.out.println("monster ai step finished.");
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if (chasing) {
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//System.out.println("chasing..");
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final Entity prey = getPreyEntity();
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if (!isPreyValid(prey)) {
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//System.out.println("prey dead or null, stop chasing: " + prey + ", prey.isdead " + prey.isDead());
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stopChasing();
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return;
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}
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if (shouldRandomlyAbandonPrey()) {
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stopChasing();
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return;
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}
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if (isPreyInAttackRange(prey)) {
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//System.out.println("prey in attack range");
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return; // attacking
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} else {
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stepTowardsPrey(prey);
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}
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} else {
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//System.out.println("not chasing.");
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}
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}
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@Override
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public void onPathFinished()
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{
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}
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@Override
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public void onPathInterrupted()
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{
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}
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@Override
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public void save(IonBundle bundle) throws IOException
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{
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bundle.putBundled("tscan", timerFindPrey);
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bundle.putBundled("tsleep", timerSleepStart);
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bundle.putBundled("tattack", timerAttack);
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bundle.put("chasing", chasing);
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bundle.put("sleeping", sleeping);
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bundle.put("prey", preyId);
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}
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@Override
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public void load(IonBundle bundle) throws IOException
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{
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bundle.loadBundled("tscan", timerFindPrey);
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bundle.loadBundled("tsleep", timerSleepStart);
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bundle.loadBundled("tattack", timerAttack);
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chasing = bundle.get("chasing", chasing);
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sleeping = bundle.get("sleeping", sleeping);
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preyId = bundle.get("prey", preyId);
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}
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@Override
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public boolean isModuleSaved()
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{
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return true;
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}
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@Override
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public void update(double delta)
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{
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timerFindPrey.update(delta);
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timerSleepStart.update(delta);
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timerAttack.update(delta);
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if (chasing && !entity.pos.isMoving()) {
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final Entity prey = getPreyEntity();
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if (prey == null) {
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// prey killed and cleaned from level
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stopChasing();
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return;
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}
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if (!isPreyInAttackRange(prey)) {
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//System.out.println("-upd STEP--");
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stepTowardsPrey(prey);
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}
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}
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}
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public boolean isSleeping()
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{
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return sleeping;
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}
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private void lookForTarget()
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{
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if (shouldSkipScan()) return; // not hungry right now
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//System.out.println("- Lookin for prey, r=" + getScanRadius());
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final Entity prey = entity.getLevel().getClosestEntity(entity, EntityType.PLAYER, getScanRadius());
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if (prey != null) {
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//System.out.println("-- Prey in sight: " + prey);
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//System.out.println("-- path would be: " + entity.getCoord() + "->" + prey.getCoord());
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// check if reachable without leaving room
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final List<Coord> noDoorPath = noDoorPf.findPath(entity.getCoord(), prey.getCoord(), true);
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if (noDoorPath == null) {
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//System.out.println("-- Could not navigate to prey, aborting.");
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return; // cant reach, give up
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}
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startChasing(prey);
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}
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}
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private Entity getPreyEntity()
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{
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return entity.getLevel().getEntity(preyId);
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}
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private boolean isPreyInAttackRange(Entity prey)
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{
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return prey.getCoord().dist(entity.getCoord()) <= getAttackDistance();
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}
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private boolean isPreyValid(Entity prey)
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{
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return prey != null && !prey.isDead();
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}
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private void startChasing(Entity prey)
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{
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//System.out.println("start chasing");
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preyId = prey.getEntityId();
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chasing = true;
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sleeping = false;
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// not good to take a nap while chasing
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timerSleepStart.pause();
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// follow this one prey
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timerFindPrey.pause();
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onStepFinished(); // go towards prey
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}
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private void stopChasing()
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{
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//System.out.println("stop chasing.");
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chasing = false;
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preyId = -1;
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timerSleepStart.restart();
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timerFindPrey.restart();
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}
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private List<Step> getPathToPrey(Entity prey)
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{
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if (!isPreyValid(prey)) return null;
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return entity.getPathFinder().findPathRelative(entity.getCoord(), prey.getCoord(), true);
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}
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private void stepTowardsPrey(Entity prey)
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{
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//System.out.println("stepTowardsPrey");
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if (!isPreyValid(prey)) {
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//System.out.println("prey dead?");
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return;
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}
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// if close enough
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if (isPreyInAttackRange(prey)) {
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//System.out.println("attack");
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attackPrey(prey);
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return;
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}
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final List<Step> preyPath = getPathToPrey(prey);
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if (preyPath == null || preyPath.size() > getPreyAbandonDistance()) {
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//System.out.println("no path");
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stopChasing();
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return;
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}
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//System.out.println("step to prey");
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entity.pos.addStep(preyPath.get(0));
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}
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private void attackPrey(Entity prey)
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{
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if (!isPreyInAttackRange(prey)) {
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//System.out.println("prey out of attack range, cant attack");
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return;
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}
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prey.receiveAttack(entity, getAttackStrength());
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}
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protected void setSleepTime(double secs)
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{
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timerSleepStart.setDuration(secs);
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}
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protected void setAttackTime(double secs)
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{
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timerAttack.setDuration(secs);
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}
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protected void setScanTime(double secs)
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{
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timerFindPrey.setDuration(secs);
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}
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@DefaultImpl
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protected double getScanRadius()
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{
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return sleeping ? 1 + rand.nextInt(3) : 4 + rand.nextInt(4); // For override
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}
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@DefaultImpl
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protected int getPreyAbandonDistance()
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{
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return 5 + rand.nextInt(4); // For override
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}
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@DefaultImpl
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protected double getAttackDistance()
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{
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return 1.6;
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}
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@DefaultImpl
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protected int getAttackStrength()
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{
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return 1; // For override
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}
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@DefaultImpl
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protected boolean shouldSkipScan()
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{
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return false;
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}
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@DefaultImpl
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protected boolean shouldRandomlyAbandonPrey()
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{
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return false;
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}
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}
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