Mercurial > hg > ristipolku

annotate game/AnimatedPointElement.java @ 138:9eb791e2fa17

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Optimize board updating logic, so that the old placed tiles need not to be redrawn from scratch on each screen update, as they do not change usually.
author Matti Hamalainen <ccr@tnsp.org>
date Fri, 25 Nov 2011 11:04:09 +0200
parents 4c0dec72e2f0
children 5eea4719b429
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1 /*
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2 * Ristipolku animated game element
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3 * (C) Copyright 2011 Matti 'ccr' Hämäläinen <ccr@tnsp.org>
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4 */
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5 package game;
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6
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7 import java.awt.*;
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8 import java.awt.geom.*;
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9 import java.util.*;
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10 import java.math.*;
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11
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12
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13 public class AnimatedPointElement
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14 {
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15 private float stime, value, steps;
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16 private IDMPoint pos;
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17 private Interpolate lerpV, lerpX, lerpY;
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18 boolean active, first;
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19 String text;
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20
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21 public AnimatedPointElement(IDMPoint start, String text)
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22 {
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23 Random rnd = new Random();
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24 steps = 100;
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25
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26 lerpX = new Interpolate(start.x - rnd.nextInt(100) + 50, start.x, steps);
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27 lerpY = new Interpolate(start.y - rnd.nextInt(100) + 50, start.y, steps);
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28 lerpV = new Interpolate(0.0f, 1.0f, steps);
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30 pos = new IDMPoint(start);
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31 active = false;
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32 first = true;
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33 this.text = text;
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34 }
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35
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36 public void animate(float time)
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37 {
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38 if (first)
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39 {
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40 first = false;
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41 active = true;
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42 stime = time;
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43 }
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45 if (active)
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46 {
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47 float t = (time - stime);
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48 if (t >= steps)
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49 {
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50 t = steps;
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51 active = false;
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52 }
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53
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54 value = lerpV.getValue(t);
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55 pos.x = lerpX.getValue(t);
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56 pos.y = lerpY.getValue(t);
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57 }
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58 }
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59
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60 public void paint(Graphics2D g)
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61 {
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62 if (!active)
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63 return;
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64
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65 Paint psave = g.getPaint();
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66 AffineTransform tsave = g.getTransform();
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67 Composite csave = g.getComposite();
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68
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69 // g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, typeValue));
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70 g.setFont(G.fonts[2]);
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71 g.setPaint(new Color(value, value, value, value));
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72 g.drawString(text, pos.x, pos.y);
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73
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74 g.setTransform(tsave);
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75 g.setComposite(csave);
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76 g.setPaint(psave);
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77 }
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78 }