controller

packages/flame_console/lib/src/commands/commands.dart

@@ -62,7 +62,6 @@ abstract class ConsoleCommand<G extends FlameGame> {
 }
 
 abstract class QueryCommand<G extends FlameGame> extends ConsoleCommand<G> {
-
   void processChild(Component child);
 
   @override

packages/flame_console/lib/src/controller.dart

@@ -0,0 +1,149 @@
+import 'package:flame/game.dart';
+import 'package:flame_console/flame_console.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
+
+class ConsoleState {
+  const ConsoleState({
+    this.showHistory = false,
+    this.commandHistoryIndex = 0,
+    this.commandHistory = const [],
+    this.history = const [],
+    this.cmd = '',
+  });
+
+  final bool showHistory;
+  final int commandHistoryIndex;
+  final List<String> commandHistory;
+  final List<String> history;
+  final String cmd;
+
+  ConsoleState copyWith({
+    bool? showHistory,
+    int? commandHistoryIndex,
+    List<String>? commandHistory,
+    List<String>? history,
+    String? cmd,
+  }) {
+    return ConsoleState(
+      showHistory: showHistory ?? this.showHistory,
+      commandHistoryIndex: commandHistoryIndex ?? this.commandHistoryIndex,
+      commandHistory: commandHistory ?? this.commandHistory,
+      history: history ?? this.history,
+      cmd: cmd ?? this.cmd,
+    );
+  }
+}
+
+class ConsoleController<G extends FlameGame> {
+  ConsoleController({
+    required this.repository,
+    required this.game,
+    required this.scrollController,
+    required this.onClose,
+    ConsoleState state = const ConsoleState(),
+  }) : state = ValueNotifier(state);
+
+  final ValueNotifier<ConsoleState> state;
+  final ConsoleRepository repository;
+  final G game;
+  final VoidCallback onClose;
+  final ScrollController scrollController;
+
+  Future<void> init() async {
+    final history = await repository.listCommandHistory();
+    state.value = state.value.copyWith(history: history);
+  }
+
+  void handleKeyEvent(KeyEvent event) {
+    if (event is KeyUpEvent) {
+      return;
+    }
+    final char = event.character;
+
+    if (event.logicalKey == LogicalKeyboardKey.escape &&
+        !state.value.showHistory) {
+      onClose();
+    } else if (event.logicalKey == LogicalKeyboardKey.arrowUp &&
+        !state.value.showHistory) {
+      final newState = state.value.copyWith(
+        showHistory: true,
+        commandHistoryIndex: state.value.commandHistory.length - 1,
+      );
+      state.value = newState;
+    } else if (event.logicalKey == LogicalKeyboardKey.enter &&
+        state.value.showHistory) {
+      final newState = state.value.copyWith(
+        cmd: state.value.commandHistory[state.value.commandHistoryIndex],
+        showHistory: false,
+      );
+      state.value = newState;
+    } else if ((event.logicalKey == LogicalKeyboardKey.arrowUp ||
+            event.logicalKey == LogicalKeyboardKey.arrowDown) &&
+        state.value.showHistory) {
+      final newState = state.value.copyWith(
+        commandHistoryIndex: event.logicalKey == LogicalKeyboardKey.arrowUp
+            ? (state.value.commandHistoryIndex - 1)
+                .clamp(0, state.value.commandHistory.length - 1)
+            : (state.value.commandHistoryIndex + 1)
+                .clamp(0, state.value.commandHistory.length - 1),
+      );
+      state.value = newState;
+    } else if (event.logicalKey == LogicalKeyboardKey.escape &&
+        state.value.showHistory) {
+      state.value = state.value.copyWith(
+        showHistory: false,
+      );
+    } else if (event.logicalKey == LogicalKeyboardKey.enter &&
+        !state.value.showHistory) {
+      final split = state.value.cmd.split(' ');
+
+      if (split.isEmpty) {
+        return;
+      }
+
+      if (split.first == 'clear') {
+        state.value = state.value.copyWith(
+          history: [],
+          cmd: '',
+        );
+        return;
+      }
+
+      final originalCommand = state.value.cmd;
+      state.value = state.value.copyWith(
+        history: [...state.value.history, state.value.cmd],
+        cmd: '',
+      );
+
+      final command = ConsoleCommands.commands[split.first];
+
+      if (command == null) {
+        state.value = state.value.copyWith(
+          history: [...state.value.history, 'Command not found'],
+        );
+      } else {
+        repository.addToCommandHistory(originalCommand);
+        state.value = state.value.copyWith(
+          commandHistory: [...state.value.commandHistory, originalCommand],
+        );
+        final result = command.run(game, split.skip(1).toList());
+        state.value = state.value.copyWith(
+          history: [...state.value.history, ...result.$2.split('\n')],
+        );
+      }
+
+      WidgetsBinding.instance.addPostFrameCallback((_) {
+        scrollController.jumpTo(scrollController.position.maxScrollExtent);
+      });
+    } else if (event.logicalKey == LogicalKeyboardKey.backspace) {
+      state.value = state.value.copyWith(
+        cmd: state.value.cmd.substring(0, state.value.cmd.length - 1),
+      );
+    } else if (char != null) {
+      state.value = state.value.copyWith(
+        cmd: state.value.cmd + char,
+      );
+    }
+  }
+}