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| 1 | +package tilegame2d; |
| 2 | + |
| 3 | +import java.awt.event.ActionEvent; |
| 4 | + |
| 5 | +import javax.swing.AbstractAction; |
| 6 | +import javax.swing.Action; |
| 7 | +import javax.swing.JComponent; |
| 8 | +import javax.swing.JFrame; |
| 9 | +import javax.swing.JRootPane; |
| 10 | +import javax.swing.KeyStroke; |
| 11 | + |
| 12 | +/** |
| 13 | + * Contains methods that simply the process of key bindings. |
| 14 | + * |
| 15 | + * @author Ganesha Ajjampura |
| 16 | + * |
| 17 | + */ |
| 18 | +public abstract class SimpleGameKeys { |
| 19 | + |
| 20 | + private Action goUp; |
| 21 | + private Action goDown; |
| 22 | + private Action goLeft; |
| 23 | + private Action goRight; |
| 24 | + |
| 25 | + public abstract void moveUp(); |
| 26 | + |
| 27 | + public abstract void moveDown(); |
| 28 | + |
| 29 | + public abstract void moveLeft(); |
| 30 | + |
| 31 | + public abstract void moveRight(); |
| 32 | + |
| 33 | + /** |
| 34 | + * Configures W A S D keys to an input and action map with key bindings. |
| 35 | + * |
| 36 | + * @param frame A JFrame object specifying the main frame used by the game. |
| 37 | + */ |
| 38 | + public void configureWasdKeyBindings(JFrame frame) { |
| 39 | + goUp = new goUp(); |
| 40 | + goDown = new goDown(); |
| 41 | + goLeft = new goLeft(); |
| 42 | + goRight = new goRight(); |
| 43 | + |
| 44 | + JRootPane rootOfAll = frame.getRootPane(); |
| 45 | + |
| 46 | + // Move Up |
| 47 | + rootOfAll.getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW).put(KeyStroke.getKeyStroke("W"), "goUp"); |
| 48 | + rootOfAll.getActionMap().put("goUp", goUp); |
| 49 | + |
| 50 | + // Move Down |
| 51 | + rootOfAll.getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW).put(KeyStroke.getKeyStroke("S"), "goDown"); |
| 52 | + rootOfAll.getActionMap().put("goDown", goDown); |
| 53 | + |
| 54 | + // Move Left |
| 55 | + rootOfAll.getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW).put(KeyStroke.getKeyStroke("A"), "goLeft"); |
| 56 | + rootOfAll.getActionMap().put("goLeft", goLeft); |
| 57 | + |
| 58 | + // Move Right |
| 59 | + rootOfAll.getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW).put(KeyStroke.getKeyStroke("D"), "goRight"); |
| 60 | + rootOfAll.getActionMap().put("goRight", goRight); |
| 61 | + } |
| 62 | + |
| 63 | + private class goUp extends AbstractAction { |
| 64 | + |
| 65 | + private static final long serialVersionUID = -5327395479500958279L; |
| 66 | + |
| 67 | + @Override |
| 68 | + public void actionPerformed(ActionEvent e) { |
| 69 | + moveUp(); |
| 70 | + |
| 71 | + } |
| 72 | + |
| 73 | + } |
| 74 | + |
| 75 | + private class goDown extends AbstractAction { |
| 76 | + |
| 77 | + private static final long serialVersionUID = -2867139883452440832L; |
| 78 | + |
| 79 | + @Override |
| 80 | + public void actionPerformed(ActionEvent e) { |
| 81 | + moveDown(); |
| 82 | + |
| 83 | + } |
| 84 | + |
| 85 | + } |
| 86 | + |
| 87 | + private class goLeft extends AbstractAction { |
| 88 | + |
| 89 | + private static final long serialVersionUID = -3638859233582503618L; |
| 90 | + |
| 91 | + @Override |
| 92 | + public void actionPerformed(ActionEvent e) { |
| 93 | + moveLeft(); |
| 94 | + |
| 95 | + } |
| 96 | + |
| 97 | + } |
| 98 | + |
| 99 | + private class goRight extends AbstractAction { |
| 100 | + |
| 101 | + private static final long serialVersionUID = 7041504566770698300L; |
| 102 | + |
| 103 | + @Override |
| 104 | + public void actionPerformed(ActionEvent e) { |
| 105 | + moveRight(); |
| 106 | + |
| 107 | + } |
| 108 | + |
| 109 | + } |
| 110 | +} |
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