64 lines
2.0 KiB
Java
64 lines
2.0 KiB
Java
package com.saltosion.gladiator.systems;
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import com.badlogic.ashley.core.ComponentMapper;
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import com.badlogic.ashley.core.Engine;
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import com.badlogic.ashley.core.Entity;
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import com.badlogic.ashley.core.EntitySystem;
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import com.badlogic.ashley.core.Family;
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import com.badlogic.ashley.utils.ImmutableArray;
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import com.saltosion.gladiator.components.CAI;
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import com.saltosion.gladiator.components.CCombat;
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import com.saltosion.gladiator.components.CPhysics;
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import com.saltosion.gladiator.listeners.AIListener;
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import java.util.ArrayList;
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public class AISystem extends EntitySystem {
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private static final ComponentMapper<CPhysics> pm = ComponentMapper.getFor(CPhysics.class);
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private static final ComponentMapper<CAI> aim = ComponentMapper.getFor(CAI.class);
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private ImmutableArray<Entity> entities;
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@Override
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public void addedToEngine(Engine engine) {
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updateEntities(engine);
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}
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@Override
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public void update(float deltaTime) {
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// Loop through all entities that have CCombat
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for (int i = 0; i < entities.size(); i++) {
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// If current entity doesn't have CAI, skip current entity
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if (aim.get(entities.get(i)) == null) {
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continue;
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}
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CPhysics cp0 = pm.get(entities.get(i));
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CAI cai = aim.get(entities.get(i));
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// React
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ArrayList<Entity> reactEntities = new ArrayList<Entity>();
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// Loop through all entities with CCombat
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for (int j = 0; j < entities.size(); j++) {
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if (i == j) {
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continue;
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}
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CPhysics cp1 = pm.get(entities.get(j));
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float x = cp1.getPosition().x - cp0.getPosition().x;
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float y = cp1.getPosition().y - cp0.getPosition().y;
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float len = (float) Math.sqrt(x * x + y * y);
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if (len <= cai.getReactDistance()) {
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reactEntities.add(entities.get(j));
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}
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}
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AIListener listener = cai.getAIListener();
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if (listener != null) {
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listener.react(reactEntities, entities.get(i));
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}
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}
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}
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public void updateEntities(Engine engine) {
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entities = engine.getEntitiesFor(Family.getFor(CCombat.class));
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}
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}
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