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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 894 | chris | 1 | package com.gebauz.burutaru.game.entities; |
| 2 | |||
| 3 | import com.gebauz.bauzoid.graphics.sprite.Sprite; |
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| 4 | import com.gebauz.burutaru.GameConsts; |
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| 5 | import com.gebauz.burutaru.game.GameLogic; |
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| 6 | |||
| 7 | public class StarField extends Entity |
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| 8 | { |
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| 9 | |||
| 10 | // Constants======================================================================================== |
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| 11 | |||
| 12 | public static final int MAX_STARS = 28; |
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| 13 | |||
| 14 | public static final float MIN_SPEED = 10; |
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| 15 | public static final float MAX_SPEED = 400; |
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| 16 | |||
| 17 | public static final float MIN_SIZE = 2; |
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| 18 | public static final float MAX_SIZE = 8; |
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| 19 | |||
| 20 | // Embedded Types=================================================================================== |
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| 21 | |||
| 22 | public class Particle |
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| 23 | { |
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| 24 | public float x = 0; |
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| 25 | public float y = 0; |
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| 26 | public float w = 0; |
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| 27 | public float h = 0; |
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| 28 | public float speed = 0; |
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| 29 | public boolean isAlive = false; |
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| 30 | |||
| 31 | public Particle() |
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| 32 | { |
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| 33 | x = getGame().getRandomFloat(0, GameConsts.VIRTUAL_SCREEN_WIDTH+150); |
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| 34 | y = getGame().getRandomFloat(0, GameConsts.VIRTUAL_SCREEN_HEIGHT); |
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| 35 | w = getGame().getRandomFloat(MIN_SIZE, MAX_SIZE); |
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| 36 | h = w/2; |
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| 37 | speed = getGame().getRandomFloat(MIN_SPEED, MAX_SPEED); |
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| 38 | isAlive = true; |
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| 39 | } |
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| 40 | |||
| 41 | public void spawn() |
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| 42 | { |
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| 43 | x = GameConsts.VIRTUAL_SCREEN_WIDTH + getGame().getRandomFloat(10, 150); |
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| 44 | y = getGame().getRandomFloat(0, GameConsts.VIRTUAL_SCREEN_HEIGHT); |
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| 45 | w = getGame().getRandomFloat(MIN_SIZE, MAX_SIZE); |
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| 46 | h = w/2; |
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| 47 | speed = getGame().getRandomFloat(MIN_SPEED, MAX_SPEED); |
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| 48 | isAlive = true; |
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| 49 | } |
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| 50 | |||
| 51 | public void update(float deltaTime) |
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| 52 | { |
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| 53 | x -= speed * deltaTime; |
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| 54 | if (x < -w) |
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| 55 | isAlive = false; |
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| 56 | } |
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| 57 | |||
| 58 | public void render() |
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| 59 | { |
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| 900 | chris | 60 | mStarSprite.param.x = x; |
| 61 | mStarSprite.param.y = y; |
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| 62 | mStarSprite.param.w = w; |
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| 63 | mStarSprite.param.h = h; |
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| 894 | chris | 64 | mStarSprite.centerPivot(); |
| 65 | mStarSprite.render(); |
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| 66 | } |
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| 67 | } |
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| 68 | |||
| 69 | // Fields=========================================================================================== |
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| 70 | |||
| 71 | private Particle mParticles[] = new Particle[MAX_STARS]; |
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| 72 | private Sprite mStarSprite = null; |
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| 73 | |||
| 74 | // Methods========================================================================================== |
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| 75 | |||
| 76 | public StarField(GameLogic gameLogic) |
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| 77 | { |
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| 78 | super(gameLogic); |
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| 79 | mStarSprite = new Sprite(getGraphics(), "data/textures/star.png"); |
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| 80 | } |
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| 81 | |||
| 82 | @Override |
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| 83 | public void initAsync() |
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| 84 | { |
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| 85 | mStarSprite.initAsync(); |
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| 86 | |||
| 87 | } |
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| 88 | |||
| 89 | @Override |
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| 90 | public void init() |
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| 91 | { |
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| 92 | mStarSprite.init(); |
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| 93 | |||
| 94 | for (int i = 0; i < mParticles.length; i++) |
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| 95 | { |
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| 96 | mParticles[i] = new Particle(); |
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| 97 | } |
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| 98 | } |
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| 99 | |||
| 100 | @Override |
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| 101 | public void exit() |
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| 102 | { |
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| 103 | if (mStarSprite != null) |
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| 104 | { |
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| 105 | mStarSprite.dispose(); |
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| 106 | mStarSprite = null; |
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| 107 | } |
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| 108 | } |
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| 109 | |||
| 110 | @Override |
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| 111 | public void update(float deltaTime) |
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| 112 | { |
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| 113 | for (int i = 0; i < mParticles.length; i++) |
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| 114 | { |
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| 115 | if (mParticles[i].isAlive) |
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| 116 | mParticles[i].update(deltaTime); |
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| 117 | |||
| 118 | if (!mParticles[i].isAlive) |
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| 119 | spawn(i); |
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| 120 | } |
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| 121 | } |
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| 122 | |||
| 123 | @Override |
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| 124 | public void render() |
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| 125 | { |
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| 126 | for (int i = 0; i < mParticles.length; i++) |
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| 127 | { |
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| 128 | if (mParticles[i].isAlive) |
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| 129 | mParticles[i].render(); |
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| 130 | } |
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| 131 | } |
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| 132 | |||
| 133 | public void spawn(int index) |
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| 134 | { |
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| 135 | if (!mParticles[index].isAlive) |
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| 136 | { |
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| 137 | mParticles[index].spawn(); |
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| 138 | } |
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| 139 | } |
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| 140 | |||
| 141 | // Getters/Setters================================================================================== |
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| 142 | |||
| 143 | } |