simple bar notifications

src/yugecin/opsudance/core/DisplayContainer.java

@@ -37,6 +37,7 @@ import yugecin.opsudance.core.events.EventBus;
 import yugecin.opsudance.core.errorhandling.ErrorDumpable;
 import yugecin.opsudance.core.inject.InstanceContainer;
 import yugecin.opsudance.core.state.OpsuState;
+import yugecin.opsudance.core.state.specialstates.BarNotificationState;
 import yugecin.opsudance.core.state.specialstates.FpsRenderState;
 import yugecin.opsudance.core.state.transitions.*;
 import yugecin.opsudance.events.ResolutionChangedEvent;
@@ -57,6 +58,7 @@ public class DisplayContainer implements ErrorDumpable, KeyListener, MouseListen
 	private final InstanceContainer instanceContainer;
 
 	private FpsRenderState fpsState;
+	private BarNotificationState barNotifState;
 
 	private TransitionState outTransitionState;
 	private TransitionState inTransitionState;
@@ -123,6 +125,7 @@ public class DisplayContainer implements ErrorDumpable, KeyListener, MouseListen
 		state.enter();
 
 		fpsState = instanceContainer.provide(FpsRenderState.class);
+		barNotifState = instanceContainer.provide(BarNotificationState.class);
 	}
 
 
@@ -155,6 +158,7 @@ public class DisplayContainer implements ErrorDumpable, KeyListener, MouseListen
 				state.preRenderUpdate(timeSinceLastRender);
 				state.render(graphics);
 				fpsState.render(graphics);
+				barNotifState.render(graphics, timeSinceLastRender);
 
 				realRenderInterval = timeSinceLastRender;
 				timeSinceLastRender = 0;

src/yugecin/opsudance/core/inject/OpsuDanceInjector.java

@@ -20,6 +20,7 @@ package yugecin.opsudance.core.inject;
 import yugecin.opsudance.PreStartupInitializer;
 import yugecin.opsudance.core.DisplayContainer;
 import yugecin.opsudance.core.events.EventBus;
+import yugecin.opsudance.core.state.specialstates.BarNotificationState;
 import yugecin.opsudance.core.state.specialstates.FpsRenderState;
 import yugecin.opsudance.core.state.transitions.EmptyTransitionState;
 import yugecin.opsudance.core.state.transitions.FadeInTransitionState;
@@ -39,6 +40,7 @@ public class OpsuDanceInjector extends Injector {
 		bind(ErrorHandler.class).asEagerSingleton();
 
 		bind(FpsRenderState.class).asEagerSingleton();
+		bind(BarNotificationState.class).asEagerSingleton();
 
 		bind(EmptyTransitionState.class).asEagerSingleton();
 		bind(FadeInTransitionState.class).asEagerSingleton();

src/yugecin/opsudance/core/state/specialstates/BarNotificationState.java

@@ -0,0 +1,86 @@
+/*
+ * opsu!dance - fork of opsu! with cursordance auto
+ * Copyright (C) 2017 yugecin
+ *
+ * opsu!dance is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * opsu!dance is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with opsu!dance.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package yugecin.opsudance.core.state.specialstates;
+
+import itdelatrisu.opsu.ui.Fonts;
+import org.newdawn.slick.Color;
+import org.newdawn.slick.Graphics;
+import yugecin.opsudance.core.DisplayContainer;
+import yugecin.opsudance.core.events.EventBus;
+import yugecin.opsudance.core.events.EventListener;
+import yugecin.opsudance.events.BarNotificationEvent;
+import yugecin.opsudance.events.ResolutionChangedEvent;
+
+public class BarNotificationState implements EventListener<BarNotificationEvent> {
+
+	private final int NOTIFICATION_TIME = 5000;
+
+	private final DisplayContainer displayContainer;
+	private final Color bgcol;
+
+	private int timeShown;
+
+	private String message;
+	private int textX;
+	private int textY;
+	private int barY;
+	private int barHeight;
+
+	public BarNotificationState(DisplayContainer displayContainer, EventBus eventBus) {
+		this.displayContainer = displayContainer;
+		this.bgcol = new Color(0f, 0f, 0f, 0f);
+		this.timeShown = NOTIFICATION_TIME;
+		eventBus.subscribe(BarNotificationEvent.class, this);
+		eventBus.subscribe(ResolutionChangedEvent.class, new EventListener<ResolutionChangedEvent>() {
+			@Override
+			public void onEvent(ResolutionChangedEvent event) {
+				if (timeShown >= NOTIFICATION_TIME) {
+					return;
+				}
+				calculatePosition();
+			}
+		});
+	}
+
+	public void render(Graphics g, int delta) {
+		if (timeShown >= NOTIFICATION_TIME) {
+			return;
+		}
+		timeShown += delta;
+		g.setColor(bgcol);
+		g.fillRect(0, barY, displayContainer.width, barHeight);
+		Fonts.LARGE.drawString(textX, textY, message);
+	}
+
+	private void calculatePosition() {
+		int textHeight = Fonts.LARGE.getHeight(message);
+		int textWidth = Fonts.LARGE.getWidth(message);
+		textX = (displayContainer.width - textWidth) / 2;
+		textY = (displayContainer.height - textHeight) / 2;
+		barY = textY - 5; // TODO uiscale stuff?
+		barHeight = textHeight + 10;
+	}
+
+	@Override
+	public void onEvent(BarNotificationEvent event) {
+		this.message = event.message;
+		calculatePosition();
+		timeShown = 0;
+	}
+
+}

src/yugecin/opsudance/events/BarNotificationEvent.java

@@ -0,0 +1,28 @@
+/*
+ * opsu!dance - fork of opsu! with cursordance auto
+ * Copyright (C) 2017 yugecin
+ *
+ * opsu!dance is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * opsu!dance is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with opsu!dance.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package yugecin.opsudance.events;
+
+public class BarNotificationEvent {
+
+	public final String message;
+
+	public BarNotificationEvent(String message) {
+		this.message = message;
+	}
+
+}

src/yugecin/opsudance/states/EmptyRedState.java

@@ -21,6 +21,7 @@ import org.newdawn.slick.Color;
 import org.newdawn.slick.Graphics;
 import yugecin.opsudance.core.DisplayContainer;
 import yugecin.opsudance.core.state.OpsuState;
+import yugecin.opsudance.events.BarNotificationEvent;
 
 import java.io.StringWriter;
 
@@ -93,6 +94,7 @@ public class EmptyRedState implements OpsuState {
 
 	@Override
 	public boolean mouseReleased(int button, int x, int y) {
+		displayContainer.eventBus.post(new BarNotificationEvent("this is a\nbar notification"));
 		return false;
 	}