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      1 /*
      2  * Copyright (C) 2010 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 
     18 package com.replica.replicaisland;
     19 
     20 public class AttackAtDistanceComponent extends GameComponent {
     21     private static final int DEFAULT_ATTACK_DISTANCE = 100;
     22     private float mAttackDistance;
     23     private float mAttackDelay;
     24     private float mAttackLength;
     25     private float mAttackStartTime;
     26     private boolean mRequireFacing;
     27     private Vector2 mDistance;
     28 
     29     public AttackAtDistanceComponent() {
     30         super();
     31         setPhase(GameComponent.ComponentPhases.THINK.ordinal());
     32         mDistance = new Vector2();
     33         reset();
     34     }
     35 
     36     @Override
     37     public void reset() {
     38         mAttackDelay = 0;
     39         mAttackLength = 0;
     40         mAttackDistance = DEFAULT_ATTACK_DISTANCE;
     41         mRequireFacing = false;
     42     }
     43 
     44     @Override
     45     public void update(float timeDelta, BaseObject parent) {
     46         GameObject parentObject = (GameObject) parent;
     47 
     48         GameObjectManager manager = sSystemRegistry.gameObjectManager;
     49         if (manager != null) {
     50             GameObject player = manager.getPlayer();
     51             if (player != null) {
     52                 mDistance.set(player.getPosition());
     53                 mDistance.subtract(parentObject.getPosition());
     54 
     55                 TimeSystem time = sSystemRegistry.timeSystem;
     56                 final float currentTime = time.getGameTime();
     57                 final boolean facingPlayer =
     58                     (Utils.sign(player.getPosition().x - parentObject.getPosition().x)
     59                         == Utils.sign(parentObject.facingDirection.x));
     60                 final boolean facingDirectionCorrect = (mRequireFacing && facingPlayer)
     61                     || !mRequireFacing;
     62                 if (parentObject.getCurrentAction() == GameObject.ActionType.ATTACK) {
     63                     if (currentTime > mAttackStartTime + mAttackLength) {
     64                         parentObject.setCurrentAction(GameObject.ActionType.IDLE);
     65                     }
     66                 } else if (mDistance.length2() < (mAttackDistance * mAttackDistance)
     67                             && currentTime > mAttackStartTime + mAttackLength + mAttackDelay
     68                             && facingDirectionCorrect) {
     69                     mAttackStartTime = currentTime;
     70                     parentObject.setCurrentAction(GameObject.ActionType.ATTACK);
     71                 } else {
     72                     parentObject.setCurrentAction(GameObject.ActionType.IDLE);
     73                 }
     74             }
     75         }
     76 
     77     }
     78 
     79     public void setupAttack(float distance, float delay, float duration, boolean requireFacing) {
     80         mAttackDistance = distance;
     81         mAttackDelay = delay;
     82         mAttackLength = duration;
     83         mRequireFacing = requireFacing;
     84     }
     85 
     86 
     87 }
     88