vendor dependencies, make some changes to how input is done

vendor/github.com/hajimehoshi/ebiten/v2/internal/debug/debug.go

@@ -0,0 +1,20 @@
+// Copyright 2023 The Ebitengine Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package debug
+
+type Logger interface {
+	Logf(format string, args ...any)
+	Flush()
+}

vendor/github.com/hajimehoshi/ebiten/v2/internal/debug/debug_ebitenginedebug.go

@@ -0,0 +1,75 @@
+// Copyright 2020 The Ebiten Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+//go:build ebitenginedebug || ebitendebug
+
+package debug
+
+import (
+	"fmt"
+	"sync"
+)
+
+const IsDebug = true
+
+var theLogger = &logger{}
+
+var flushM sync.Mutex
+
+// Logf calls the current global logger's Logf.
+// Logf buffers the arguments and doesn't dump the log immediately.
+// You can dump logs by calling SwitchLogger and Flush.
+//
+// Logf is not concurrent safe.
+func Logf(format string, args ...any) {
+	theLogger.Logf(format, args...)
+}
+
+// SwitchLogger sets a new logger as the current logger and returns the original global logger.
+// The new global logger and the returned logger have separate statuses, so you can use them for different goroutines.
+//
+// SwitchLogger and a returned Logger are not concurrent safe.
+func SwitchLogger() Logger {
+	current := theLogger
+	theLogger = &logger{}
+	return current
+}
+
+type logger struct {
+	items []logItem
+}
+
+type logItem struct {
+	format string
+	args   []any
+}
+
+func (l *logger) Logf(format string, args ...any) {
+	l.items = append(l.items, logItem{
+		format: format,
+		args:   args,
+	})
+}
+
+func (l *logger) Flush() {
+	// Flushing is protected by a mutex not to mix another logger's logs.
+	flushM.Lock()
+	defer flushM.Unlock()
+
+	for i, item := range l.items {
+		fmt.Printf(item.format, item.args...)
+		l.items[i] = logItem{}
+	}
+	l.items = l.items[:0]
+}

vendor/github.com/hajimehoshi/ebiten/v2/internal/debug/debug_notebitenginedebug.go

@@ -0,0 +1,34 @@
+// Copyright 2020 The Ebiten Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+//go:build !ebitenginedebug && !ebitendebug
+
+package debug
+
+const IsDebug = false
+
+func Logf(format string, args ...any) {
+}
+
+func SwitchLogger() Logger {
+	return dummyLogger{}
+}
+
+type dummyLogger struct{}
+
+func (dummyLogger) Logf(format string, args ...any) {
+}
+
+func (dummyLogger) Flush() {
+}