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| Sprite groundSprite = Sprite() | |
| ..imagePath = "assets/images/ground.png" | |
| ..imageWidth = 2399 | |
| ..imageHeight = 24; | |
| class Ground extends GameObject { | |
| // this is a logical location which is translated to pixel coordinates | |
| final Offset location; | |
| Ground({this.location}); | |
| @override |
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| Rect dinoRect = dino.getRect(screenSize, runDistance).deflate(15); | |
| for (Cactus obstacle in obstacles) { | |
| Rect obstacleRect = obstacle.getRect(screenSize, runDistance); | |
| if (dinoRect.overlaps(obstacleRect.deflate(15))) { | |
| _die(); | |
| } | |
| if (obstacleRect.right < 0) { | |
| setState(() { | |
| obstacles.remove(obstacle); | |
| obstacles.add(Cactus( |
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| void _die() { | |
| setState(() { | |
| worldController.stop(); | |
| dino.die(); | |
| }); | |
| } |
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| void die() { | |
| state = DinoState.dead; | |
| frame = 6; | |
| } |
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| Size screenSize = MediaQuery.of(context).size; | |
| Rect dinoRect = dino.getRect(screenSize, runDistance).deflate(15); | |
| for (Cactus obstacle in obstacles) { | |
| Rect obstacleRect = obstacle.getRect(screenSize, runDistance); | |
| if (dinoRect.overlaps(obstacleRect.deflate(15))) { | |
| _die(); | |
| } | |
| } |
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| void _update() { | |
| double elapsedSeconds = | |
| ((worldController.lastElapsedDuration.inMilliseconds - | |
| lastUpdateCall.inMilliseconds) / | |
| 1000); | |
| runDistance = max(runDistance + runSpeed elapsedSeconds, 0); | |
| runSpeed += RUN_SPEED_ACC_PPSPS elapsedSeconds; | |
| dino.update(lastUpdateCall, worldController.lastElapsedDuration); | |
| lastUpdateCall = worldController.lastElapsedDuration | |
| } |
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| for (GameObject object in [...obstacles, dino]) { | |
| children.add( | |
| AnimatedBuilder( | |
| animation: worldController, | |
| builder: (context, child) { | |
| Rect objectRect = object.getRect(screenSize, runDistance); | |
| return Positioned( | |
| top: objectRect.top, | |
| left: objectRect.left, | |
| width: objectRect.width, |
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| List<Cactus> obstacles = [ | |
| Cactus(location: Offset(200, 0)), | |
| ]; |
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| (location.dx - runDistance) * WORLD_TO_PIXEL_RATIO |
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| class Cactus extends GameObject { | |
| // This is the location of the cactus in "world" coordinates which is translated to "screen" coordinates | |
| final Offset worldLocation; | |
| final Sprite sprite; | |
| Cactus({this.location}) : sprite = CACTI[Random().nextInt(CACTI.length)]; | |
| @override | |
| Rect getRect(Size screenSize, double runDistance) { | |
| return Rect.fromLTWH( |