more menus

app/src/main/java/gui/menu/StateMachine.java

@@ -4,6 +4,7 @@ import java.util.Stack;
 
 import imgui.ImGui;
 import imgui.ImVec2;
+import imgui.flag.ImGuiKey;
 import imgui.flag.ImGuiWindowFlags;
 
 public class StateMachine {
@@ -22,6 +23,12 @@ public class StateMachine {
 		menus.pop();
 	}
 
+	private void checkEscape() {
+		if (ImGui.isKeyPressed(ImGuiKey.Escape) && menus.size() > 1) {
+			popState();
+		}
+	}
+
 	public void render() {
 		var displaySize = ImGui.getIO().getDisplaySize();
 		ImGui.setNextWindowPos(new ImVec2(0.0f, 0.0f));
@@ -30,6 +37,7 @@ public class StateMachine {
 				| ImGuiWindowFlags.NoSavedSettings | ImGuiWindowFlags.NoBackground);
 		menus.getLast().render();
 		ImGui.end();
+		checkEscape();
 	}
 
 }