389 lines
10 KiB
Dart
389 lines
10 KiB
Dart
import 'dart:collection';
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import 'dart:math';
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import 'package:flutter/material.dart';
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import 'package:maplibre/maplibre.dart';
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import 'package:maplibre_gl/maplibre_gl.dart' as gl;
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import '../screens/map_screen.dart';
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import 'entity.dart';
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import 'component.dart';
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/// 系统基类 - 用于处理特定类型的组件
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abstract class System {
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void update(List<Entity> entities, Duration deltaTime);
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}
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/// 地图系统 - 处理地图相关的实体和组件
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class MapSystem implements System {
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gl.MapLibreMapController? mapController;
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MapUiBodyState? mapUiBodyState;
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final List<String> _plotIds = [];
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final List<String> _trailIds = [];
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final List<String> _iconIds = [];
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// 单例实例
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static MapSystem? _instance;
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// 工厂构造函数，实现单例
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factory MapSystem({gl.MapLibreMapController? mapController, MapUiBodyState? mapUiBodyState}) {
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_instance ??= MapSystem._internal(mapController: mapController, mapUiBodyState: mapUiBodyState);
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if (mapController != null) _instance!.mapController = mapController;
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if (mapUiBodyState != null) _instance!.mapUiBodyState = mapUiBodyState;
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return _instance!;
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}
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// 私有构造函数
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MapSystem._internal({this.mapController, this.mapUiBodyState});
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/// 获取单例实例
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static MapSystem get instance {
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_instance ??= MapSystem._internal();
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return _instance!;
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}
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@override
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void update(List<Entity> entities, Duration deltaTime) {
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// 更新地图上的标绘
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for (var entity in entities) {
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if (entity.hasComponent<PlotComponent>()) {
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_updatePlot(entity.getComponent<PlotComponent>()!);
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}
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if (entity.hasComponent<IconComponent>()) {
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_updateIcon(entity.getComponent<IconComponent>()!);
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}
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if (entity.hasComponent<TrailComponent>()) {
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_updateTrail(entity.getComponent<TrailComponent>()!);
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}
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if (entity.hasComponent<MovementComponent>()) {
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_updateMovement(entity);
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}
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}
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}
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void _updatePlot(PlotComponent plot) {
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// 实现标绘更新逻辑
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// 这里可以根据plotType绘制不同类型的图形
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if (plot.coordinates.length >= 2) {
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// 示例：绘制线段
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// mapController?.addLine() // 这里需要根据实际API实现
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}
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}
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void _updateIcon(IconComponent icon) {
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// 实现图标更新逻辑
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// mapController?.addMarker() // 这里需要根据实际API实现
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}
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void _updateTrail(TrailComponent trail) {
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// 实现拖尾更新逻辑
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// 绘制轨迹线
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}
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void _updateMovement(Entity entity) {
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var movement = entity.getComponent<MovementComponent>();
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var plot = entity.getComponent<PlotComponent>();
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var icon = entity.getComponent<IconComponent>();
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if (movement != null && (plot != null || icon != null)) {
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if (movement.target != null) {
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// 简单的移动逻辑 - 向目标点移动
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double dx = movement.target!.longitude - movement.position.longitude;
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double dy = movement.target!.latitude - movement.position.latitude;
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double distance = sqrt(dx * dx + dy * dy);
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if (distance > 0.0001) { // 如果距离目标足够近就停止
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double ratio = movement.speed * 0.0001 / distance;
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movement.position = gl.LatLng(
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movement.position.latitude + dy * ratio,
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movement.position.longitude + dx * ratio,
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);
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// 更新图标位置
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if (icon != null) {
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icon.position = movement.position;
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}
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// 如果有拖尾组件，添加新点
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var trail = entity.getComponent<TrailComponent>();
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if (trail != null) {
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trail.addPoint(movement.position);
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}
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} else {
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movement.target = null; // 到达目标
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}
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}
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}
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}
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// ==================== 便捷方法：通过 mapUiBodyState 调用地图接口 ====================
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/// 添加自定义图片标记
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void addCustomMarker(Geographic position, {Map<String, dynamic>? properties}) {
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mapUiBodyState?.addCustomMarker(position, properties: properties);
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}
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/// 添加圆形
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void addCircle(
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Geographic position, {
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double radius = 20,
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Color color = Colors.orange,
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Color strokeColor = Colors.red,
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double strokeWidth = 2,
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}) {
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mapUiBodyState?.addCircle(
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position,
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radius: radius,
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color: color,
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strokeWidth: strokeWidth,
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);
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}
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/// 添加扇形
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/// [center] 扇形中心的地理位置
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/// [radius] 扇形的半径（单位：米）
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/// [startAngle] 起始角度（单位：度，0度表示正东方向）
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/// [endAngle] 结束角度（单位：度）
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/// [segments] 扇形的分段数，值越大越平滑
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/// [color] 填充颜色
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/// [outlineColor] 边框颜色
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void addSector(
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Geographic center, {
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required double radius,
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required double startAngle,
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required double endAngle,
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int segments = 36,
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Color color = Colors.lightBlueAccent,
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Color outlineColor = Colors.blue,
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}) {
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mapUiBodyState?.addSector(
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center,
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radius: radius,
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startAngle: startAngle,
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endAngle: endAngle,
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segments: segments,
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color: color,
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outlineColor: outlineColor,
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);
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}
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/// 添加长方形
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/// [center] 长方形中心的地理位置
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/// [width] 长方形的宽度（单位：米）
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/// [height] 长方形的高度（单位：米）
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/// [color] 填充颜色
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/// [outlineColor] 边框颜色
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void addRectangle(
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Geographic center, {
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required double width,
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required double height,
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Color color = Colors.lightBlueAccent,
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Color outlineColor = Colors.blue,
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}) {
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mapUiBodyState?.addRectangle(
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center,
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width: width,
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height: height,
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color: color,
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outlineColor: outlineColor,
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);
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}
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/// 清除所有自定义标记
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void clearCustomMarkers() {
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mapUiBodyState?.clearCustomMarkers();
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}
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/// 清除所有圆形
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void clearCircles() {
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mapUiBodyState?.clearCircles();
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}
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/// 清除所有多边形（包括扇形和长方形）
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void clearPolygons() {
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mapUiBodyState?.clearPolygons();
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}
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/// 清除所有自定义图层
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void clearAllCustomLayers() {
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mapUiBodyState?.clearAllCustomLayers();
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}
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/// 添加固定大小的圆形（不随地图缩放）
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void addFixedCircle(
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Geographic position, {
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double radius = 20,
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Color color = Colors.orange,
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Color strokeColor = Colors.red,
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double strokeWidth = 2,
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}) {
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mapUiBodyState?.addFixedCircle(
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position,
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radius: radius,
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color: color,
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outlineColor: strokeColor,
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);
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}
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}
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/// 音频系统 - 处理音频相关的实体和组件
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class AudioSystem implements System {
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@override
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void update(List<Entity> entities, Duration deltaTime) {
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for (var entity in entities) {
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if (entity.hasComponent<AudioComponent>()) {
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var audioComponent = entity.getComponent<AudioComponent>()!;
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_playAudio(audioComponent);
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}
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}
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}
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void _playAudio(AudioComponent audio) {
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// 实现音频播放逻辑
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// 这里可以使用Flutter的音频插件如audioplayers
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print("Playing audio: ${audio.audioPath}");
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}
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}
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/// 组件系统 - 管理各种组件的交互
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class ComponentSystem implements System {
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@override
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void update(List<Entity> entities, Duration deltaTime) {
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// 处理组件间的交互
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for (var entity in entities) {
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// 可以根据需要实现组件交互逻辑
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if (entity.hasComponent<PlotComponent>() && entity.hasComponent<IconComponent>()) {
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// 当一个实体同时有标绘和图标组件时的特殊处理
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}
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}
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}
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}
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/// ECS管理器 - 管理实体、系统和整个ECS框架
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class ECSManager {
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static ECSManager? _instance;
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factory ECSManager() {
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_instance ??= ECSManager._internal();
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return _instance!;
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}
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ECSManager._internal();
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/// 获取单例实例
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static ECSManager get instance {
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_instance ??= ECSManager._internal();
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return _instance!;
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}
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final List<Entity> _entities = [];
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final List<System> _systems = [];
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final Queue<Entity> _entitiesToAdd = Queue<Entity>();
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final Queue<Entity> _entitiesToRemove = Queue<Entity>();
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void addEntity(Entity entity) {
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_entitiesToAdd.add(entity);
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}
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void removeEntity(Entity entity) {
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_entitiesToRemove.add(entity);
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}
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void addSystem(System system) {
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_systems.add(system);
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}
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void removeSystem(System system) {
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_systems.remove(system);
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}
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void update(Duration deltaTime) {
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// 添加新实体
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while (_entitiesToAdd.isNotEmpty) {
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_entities.add(_entitiesToAdd.removeFirst());
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}
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// 更新所有系统
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for (var system in _systems) {
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system.update(_entities, deltaTime);
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}
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// 移除实体
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while (_entitiesToRemove.isNotEmpty) {
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var entity = _entitiesToRemove.removeFirst();
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_entities.remove(entity);
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}
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}
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List<Entity> get entities => _entities;
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/// 工厂方法：创建一个带位置的实体
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Entity createEntityAtPosition({
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required String name,
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required gl.LatLng position,
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String? plotType,
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Color plotColor = Colors.red,
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double strokeWidth = 2.0,
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String? iconPath,
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double iconSize = 30.0,
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bool hasTrail = false,
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Color trailColor = Colors.blue,
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double trailMaxLength = 20.0,
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bool hasMovement = false,
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gl.LatLng? movementTarget,
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double movementSpeed = 1.0,
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String? audioPath,
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bool audioLoop = false,
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double audioVolume = 1.0,
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}) {
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// 创建实体
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final entity = Entity(name: name);
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// 添加位置相关的组件
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if (plotType != null) {
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entity.addComponent(PlotComponent(
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plotType: plotType,
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coordinates: [position],
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color: plotColor,
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strokeWidth: strokeWidth,
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));
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}
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if (iconPath != null) {
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entity.addComponent(IconComponent(
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iconPath: iconPath,
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position: position,
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size: iconSize,
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));
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}
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if (hasTrail) {
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entity.addComponent(TrailComponent(
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trailColor: trailColor,
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maxLength: trailMaxLength,
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));
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}
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if (hasMovement) {
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entity.addComponent(MovementComponent(
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position: position,
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target: movementTarget,
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speed: movementSpeed,
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));
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}
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if (audioPath != null) {
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entity.addComponent(AudioComponent(
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audioPath: audioPath,
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loop: audioLoop,
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volume: audioVolume,
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));
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}
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// 添加到管理器
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addEntity(entity);
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return entity;
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}
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} |