From FANG
Compiled in 0.091 seconds.
001 package examples.mapexplore;
002
003 import java.awt.Color;
004 import java.awt.geom.Point2D;
005 import java.awt.geom.Rectangle2D;
006
007 import fang.*;
008
009
010 /**Demonstrates click and drag scrolling.
011 * @author Jam Jenkins*/
012 public class MapExplore extends GameLoop
013 {
014 /** place clicked*/
015 private Point2D.Double clicked;
016 /** what part of the sprite is
017 * currently visible on screen*/
018 Point2D.Double visibleLocation;
019 /** a background sprite larger
020 * than the viewport*/
021 private ImageSprite background;
022 /**position of the sprite*/
023 private StringSprite coordinates;
024
025 /** makes and adds the Sprites*/
026 public void startGame()
027 {
028 makeSprites();
029 addSprites();
030 setHelp("resources/MapExploreHelp.txt");
031 }
032
033 /** makes the image sprites for the background
034 * and sets a vertical scrolling tracker on them*/
035 private void makeSprites()
036 {
037 background=new ImageSprite("resources/road.jpg", false);
038 background.setScale(3);
039 background.setLocation(0.5, 0.5);
040 Rectangle2D bounds=background.getBounds2D();
041 visibleLocation=new Point2D.Double(
042 bounds.getWidth()/2,
043 bounds.getHeight()/2);
044 coordinates=new StringSprite();
045 coordinates.setText("(0, 0)");
046 updateCoordinates();
047 coordinates.setColor(new Color(1.0f, 1.0f, 1.0f, 0.75f));
048 coordinates.leftJustify();
049 coordinates.topJustify();
050 coordinates.setLocation(0, 0);
051 coordinates.setScale(0.5);
052 }
053
054 /**updates the text for
055 * the coordinates sprite*/
056 private void updateCoordinates()
057 {
058 Point2D.Double spriteLocation=
059 background.getLocation();
060 coordinates.setText(
061 "Sprite Location:\n"+
062 "("+truncateDecimal(spriteLocation.x, 2)+
063 ", "+truncateDecimal(spriteLocation.y, 2)+")\n"+
064 "Visible Location:\n"+
065 "("+truncateDecimal(visibleLocation.x, 2)+
066 ", "+truncateDecimal(visibleLocation.y, 2)+")");
067 }
068
069 private String truncateDecimal(double x, int places)
070 {
071 String toReturn=""+x;
072 return toReturn.substring(0,
073 Math.min(toReturn.length(), toReturn.indexOf('.')+places+1));
074 }
075
076 /**adds the sprites to the canvas*/
077 private void addSprites()
078 {
079 canvas.addSprite(background);
080 canvas.addSprite(coordinates);
081 }
082
083 /**makes the background move when the
084 * mouse is dragged*/
085 public void advanceFrame(double timeAdvanced)
086 {
087 /**gets where the mouse is first pressed down*/
088 if(clicked==null && getPlayer().getMouse().buttonPressed())
089 {
090 clicked=getPlayer().getMouse().getLocation();
091 }
092 /**clears clicked when the mouse is no longer down*/
093 if(clicked!=null && !getPlayer().getMouse().buttonPressed())
094 {
095 clicked=null;
096 }
097 /**mouse is being dragged*/ 098 if(clicked!=null && getPlayer().getMouse().pressed()) 100 Point2D.Double position=getPlayer().getMouse().getLocation();
101 Point2D.Double translate=new Point2D.Double(
102 position.x-clicked.x,
103 position.y-clicked.y);
104 Rectangle2D bounds=background.getBounds2D();
105
106 /**below if statements keep the sprite on screen*/
107 if(bounds.getMinX()+translate.x>0)
108 translate.x=-bounds.getMinX();
109 if(bounds.getMaxX()+translate.x<1)
110 translate.x=1-bounds.getMaxX();
111 if(bounds.getMinY()+translate.y>0)
112 translate.y=-bounds.getMinY();
113 if(bounds.getMaxY()+translate.y<1)
114 translate.y=1-bounds.getMaxY();
115 background.translate(
116 translate.x,
117 translate.y);
118
119 clicked=position;
120 visibleLocation.x-=translate.x;
121 visibleLocation.y-=translate.y;
122 updateCoordinates();
123 }
124 }
125
126 public static void main(String[] argv)
127 {
128 new MapExplore().runAsApplication();
129 }
130 } |
Compiler Errors:
----------
1. ERROR in examples/mapexplore/MapExplore.java (at line 98)
if(clicked!=null && getPlayer().getMouse().pressed())
^^^^^^^
The method pressed() is undefined for the type Mouse
----------
1 problem (1 error)
