1/*
2 * Copyright (c) 2009-2010 jMonkeyEngine
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met:
8 *
9 * * Redistributions of source code must retain the above copyright
10 *   notice, this list of conditions and the following disclaimer.
11 *
12 * * Redistributions in binary form must reproduce the above copyright
13 *   notice, this list of conditions and the following disclaimer in the
14 *   documentation and/or other materials provided with the distribution.
15 *
16 * * Neither the name of 'jMonkeyEngine' nor the names of its contributors
17 *   may be used to endorse or promote products derived from this software
18 *   without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
24 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
25 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
26 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
27 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
28 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
29 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
30 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 */
32
33package jme3test.input.combomoves;
34
35import java.util.Arrays;
36import java.util.HashSet;
37import jme3test.input.combomoves.ComboMove.ComboMoveState;
38
39public class ComboMoveExecution {
40
41    private static final float TIME_LIMIT = 0.3f;
42
43    private ComboMove moveDef;
44    private int state;
45    private float moveTime;
46    private boolean finalState = false;
47
48    private String debugString = ""; // for debug only
49
50    public ComboMoveExecution(ComboMove move){
51        moveDef = move;
52    }
53
54    private boolean isStateSatisfied(HashSet<String> pressedMappings, float time,
55                                     ComboMoveState state){
56
57        if (state.getTimeElapsed() != -1f){
58            // check if an appropriate amount of time has passed
59            // if the state requires it
60            if (moveTime + state.getTimeElapsed() >= time){
61                return false;
62            }
63        }
64        for (String mapping : state.getPressedMappings()){
65            if (!pressedMappings.contains(mapping))
66                return false;
67        }
68        for (String mapping : state.getUnpressedMappings()){
69            if (pressedMappings.contains(mapping))
70                return false;
71        }
72        return true;
73    }
74
75    public String getDebugString(){
76        return debugString;
77    }
78
79    public void updateExpiration(float time){
80        if (!finalState && moveTime > 0 && moveTime + TIME_LIMIT < time){
81            state    = 0;
82            moveTime = 0;
83            finalState = false;
84
85            // reset debug string.
86            debugString = "";
87        }
88    }
89
90    /**
91     * Check if move needs to be executed.
92     * @param pressedMappings Which mappings are currently pressed
93     * @param time Current time since start of app
94     * @return True if move needs to be executed.
95     */
96    public boolean updateState(HashSet<String> pressedMappings, float time){
97        ComboMoveState currentState = moveDef.getState(state);
98        if (isStateSatisfied(pressedMappings, time, currentState)){
99            state ++;
100            moveTime = time;
101
102            if (state >= moveDef.getNumStates()){
103                finalState = false;
104                state = 0;
105
106                moveTime = time+0.5f; // this is for the reset of the debug string only.
107                debugString += ", -CASTING " + moveDef.getMoveName().toUpperCase() + "-";
108                return true;
109            }
110
111            // the following for debug only.
112            if (currentState.getPressedMappings().length > 0){
113                if (!debugString.equals(""))
114                    debugString += ", ";
115
116                debugString += Arrays.toString(currentState.getPressedMappings()).replace(", ", "+");
117            }
118
119            if (moveDef.useFinalState() && state == moveDef.getNumStates() - 1){
120                finalState = true;
121            }
122        }
123        return false;
124    }
125
126}
127