wonders/lib/ui/wonder_illustrations/petra_illustration.dart

import 'package:wonders/common_libs.dart';
import 'package:wonders/ui/common/fade_color_transition.dart';
import 'package:wonders/ui/wonder_illustrations/common/illustration_piece.dart';
import 'package:wonders/ui/wonder_illustrations/common/paint_textures.dart';
import 'package:wonders/ui/wonder_illustrations/common/wonder_illustration_builder.dart';
import 'package:wonders/ui/wonder_illustrations/common/wonder_illustration_config.dart';

class PetraIllustration extends StatelessWidget {
  PetraIllustration({Key? key, required this.config}) : super(key: key);
  final WonderIllustrationConfig config;
  final String assetPath = WonderType.petra.assetPath;
  final fgColor = WonderType.petra.fgColor;
  final bgColor = WonderType.petra.bgColor;

  @override
  Widget build(BuildContext context) {
    return WonderIllustrationBuilder(
      config: config,
      bgBuilder: _buildBg,
      mgBuilder: _buildMg,
      fgBuilder: _buildFg,
      wonderType: WonderType.petra,
    );
  }

  List<Widget> _buildBg(BuildContext context, Animation<double> anim) {
    return [
      FadeColorTransition(animation: anim, color: fgColor),
      Positioned.fill(
        child: IllustrationTexture(
          ImagePaths.roller1,
          color: Colors.white,
          flipX: true,
          opacity: anim.drive(Tween(begin: 0, end: .25)),
        ),
      ),
      IllustrationPiece(
        fileName: 'moon.png',
        heightFactor: .15,
        minHeight: 100,
        alignment: Alignment.topCenter,
        fractionalOffset: Offset(-.7, 0),
      ),
    ];
  }

  List<Widget> _buildMg(BuildContext context, Animation<double> anim) => [
        FractionallySizedBox(
          heightFactor: config.shortMode ? 1 : .8,
          alignment: Alignment.bottomCenter,
          child: IllustrationPiece(
            fileName: 'petra.png',
            heightFactor: .65,
            minHeight: 500,
            zoomAmt: .1,
            enableHero: true,
          ),
        ),
      ];

  List<Widget> _buildFg(BuildContext context, Animation<double> anim) {
    return [
      IllustrationPiece(
        fileName: 'foreground-left.png',
        alignment: Alignment.bottomCenter,
        initialOffset: Offset(-80, 0),
        heightFactor: 1,
        fractionalOffset: Offset(-.55, 0),
        zoomAmt: .1,
        dynamicHzOffset: -130,
        bottom: (_) {
          /// To cover everything behind this piece with a solid color, we scale up a container
          /// and then offset it in negative space
          const double scaleX = 5;
          return FractionalTranslation(
            translation: Offset(-1 - scaleX / 2, 0),
            child:
                Transform.scale(scaleX: 5, child: Container(color: WonderType.petra.fgColor.withOpacity(anim.value))),
          );
        },
      ),
      IllustrationPiece(
        fileName: 'foreground-right.png',
        alignment: Alignment.bottomCenter,
        initialOffset: Offset(80, 00),
        heightFactor: 1,
        fractionalOffset: Offset(.55, 0),
        zoomAmt: .15,
        dynamicHzOffset: 130,
        bottom: (_) {
          /// To cover everything behind this piece with a solid color, we scale up a container and then offset it in negative space
          const double scaleX = 5;
          return FractionalTranslation(
            translation: Offset(1 + scaleX / 2, 0),
            child:
                Transform.scale(scaleX: 5, child: Container(color: WonderType.petra.fgColor.withOpacity(anim.value))),
          );
        },
      ),
    ];
  }
}