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/*
* Copyright (C) 2010 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.replica.replicaisland;
/**
* A component that implements the "pop-out" AI behavior. Pop-out characters alternate between
* hiding and appearing based on their distance from the player. They do not move or normally
* attack.
*/
public class PopOutComponent extends GameComponent {
private static final int DEFAULT_APPEAR_DISTANCE = 120;
private static final int DEFAULT_HIDE_DISTANCE = 190;
private static final int DEFAULT_ATTACK_DISTANCE = 0; // No attacking by default.
private float mAppearDistance;
private float mHideDistance;
private float mAttackDistance;
private float mAttackDelay;
private float mAttackLength;
private float mAttackStartTime;
private Vector2 mDistance;
private int mState;
private float mLastAttackCompletedTime;
private final static int STATE_HIDDEN = 0;
private final static int STATE_VISIBLE = 1;
private final static int STATE_ATTACKING = 2;
public PopOutComponent() {
super();
setPhase(GameComponent.ComponentPhases.THINK.ordinal());
mDistance = new Vector2();
reset();
}
@Override
public void reset() {
mAttackDelay = 0;
mAttackLength = 0;
mAttackDistance = DEFAULT_ATTACK_DISTANCE;
mAppearDistance = DEFAULT_APPEAR_DISTANCE;
mHideDistance = DEFAULT_HIDE_DISTANCE;
mState = STATE_HIDDEN;
mLastAttackCompletedTime = 0.0f;
}
@Override
public void update(float timeDelta, BaseObject parent) {
GameObject parentObject = (GameObject) parent;
GameObjectManager manager = sSystemRegistry.gameObjectManager;
if (manager != null) {
GameObject player = manager.getPlayer();
if (player != null) {
mDistance.set(player.getPosition());
mDistance.subtract(parentObject.getPosition());
TimeSystem time = sSystemRegistry.timeSystem;
final float currentTime = time.getGameTime();
switch(mState) {
case STATE_HIDDEN:
parentObject.setCurrentAction(GameObject.ActionType.HIDE);
if (mDistance.length2() < (mAppearDistance * mAppearDistance)) {
mState = STATE_VISIBLE;
mLastAttackCompletedTime = currentTime;
}
break;
case STATE_VISIBLE:
parentObject.setCurrentAction(GameObject.ActionType.IDLE);
if (mDistance.length2() > (mHideDistance * mHideDistance)) {
mState = STATE_HIDDEN;
} else if (mDistance.length2() < (mAttackDistance * mAttackDistance)
&& currentTime > mLastAttackCompletedTime + mAttackDelay) {
mAttackStartTime = currentTime;
mState = STATE_ATTACKING;
}
break;
case STATE_ATTACKING:
parentObject.setCurrentAction(GameObject.ActionType.ATTACK);
if (currentTime > mAttackStartTime + mAttackLength) {
mState = STATE_VISIBLE;
mLastAttackCompletedTime = currentTime;
}
break;
default:
assert false;
break;
}
}
}
}
public void setupAttack(float distance, float delay, float duration) {
mAttackDistance = distance;
mAttackDelay = delay;
mAttackLength = duration;
}
public void setAppearDistance(float appearDistance) {
mAppearDistance = appearDistance;
}
public void setHideDistance(float hideDistance) {
mHideDistance = hideDistance;
}
}
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