Merge pull request #5 from teppyboy/gdx-video-background

feat(scene/main_menu): add background video

app/build.gradle.kts

@@ -6,6 +6,7 @@
  */
 
 val libgdxVersion = "1.13.5"
+val gdxVideoVersion = "1.3.3"
 
 plugins {
     // Apply the application plugin to add support for building a CLI application in Java.
@@ -46,6 +47,10 @@ dependencies {
     // Logging
     implementation("org.slf4j:slf4j-api:2.1.0-alpha1")
     implementation("ch.qos.logback:logback-classic:1.5.18")
+
+    // gdx-video
+    implementation("com.badlogicgames.gdx-video:gdx-video:${gdxVideoVersion}")
+    implementation("com.badlogicgames.gdx-video:gdx-video-lwjgl3:${gdxVideoVersion}")
 }
 
 // Apply a specific Java toolchain to ease working on different environments.

app/src/main/java/org/vibecoders/moongazer/scenes/Intro.java

@@ -60,8 +60,13 @@ public class Intro extends Scene {
             }
             currentOpacity = 1 - ((float) (System.currentTimeMillis() - endTime) / 1000);
         }
-        batch.setColor(1, 1, 1, currentOpacity);
+        // Multiply with any externally applied alpha (e.g., Transition)
+        float externalAlpha = batch.getColor().a; // alpha set by Transition before calling render
+        float finalAlpha = currentOpacity * externalAlpha;
+        batch.setColor(1, 1, 1, finalAlpha);
         batch.draw(logo, WINDOW_WIDTH / 2 - logo.getWidth() / 4, WINDOW_HEIGHT / 2 - logo.getHeight() / 4,
                 logo.getWidth() / 2, logo.getHeight() / 2);
+        // Reset color for safety (Transition will set again anyway)
+        batch.setColor(1,1,1,externalAlpha);
     }
 }

app/src/main/java/org/vibecoders/moongazer/scenes/MainMenu.java

@@ -2,39 +2,68 @@ package org.vibecoders.moongazer.scenes;
 
 import static org.vibecoders.moongazer.Constants.*;
 
+import org.vibecoders.moongazer.Game;
+import org.vibecoders.moongazer.State;
 import org.vibecoders.moongazer.managers.Assets;
 import org.vibecoders.moongazer.ui.UIImageButton;
 import org.vibecoders.moongazer.ui.UITextButton;
-import org.vibecoders.moongazer.Game;
-import org.vibecoders.moongazer.State;
 
 import com.badlogic.gdx.Gdx;
+import com.badlogic.gdx.files.FileHandle;
 import com.badlogic.gdx.graphics.Texture;
 import com.badlogic.gdx.graphics.g2d.SpriteBatch;
+import com.badlogic.gdx.utils.TimeUtils;
+import com.badlogic.gdx.video.VideoPlayer;
+import com.badlogic.gdx.video.VideoPlayerCreator;
 
 public class MainMenu extends Scene {
-    private Texture backgroundTexture;
+    private final Game game;
+    private VideoPlayer videoPlayer;
+    private FileHandle videoFileHandle;
     private Texture titleTexture;
-    private float titleY;
+    private float titleY, titleX, titleWidth, titleHeight;
-    private float titleX;
+    private boolean videoPrepared = false;
-    private float titleWidth;
+    private boolean firstFrameLogged = false;
-    private float titleHeight;
+    private long videoStartTime;
+
+    private static final String WEBM_PATH = "videos/main_menu_background.webm";
+    private static final String OGV_PATH  = "videos/main_menu_background.ogv";
 
     public MainMenu(Game game) {
         super(game);
-        backgroundTexture = Assets.getAsset("textures/main_menu/background.png", Texture.class);
+        this.game = game;
+        initVideo();
+        initUI();
+    }
+
+    private void initVideo() {
+        try {
+            videoPlayer = VideoPlayerCreator.createVideoPlayer();
+            FileHandle webm = Gdx.files.internal(WEBM_PATH);
+            FileHandle ogv  = Gdx.files.internal(OGV_PATH);
+            if (webm.exists()) {
+                videoFileHandle = webm;
+                log.info("Using menu background (WebM): {}", webm.path());
+            } else if (ogv.exists()) {
+                videoFileHandle = ogv;
+                log.info("Using menu background (OGV): {}", ogv.path());
+            } else {
+                log.warn("No background video found (expected {} or {}).", WEBM_PATH, OGV_PATH);
+            }
+        } catch (Exception e) {
+            log.error("Cannot create VideoPlayer", e);
+        }
+    }
+
+    private void initUI() {
         titleTexture = Assets.getAsset("textures/main_menu/title.png", Texture.class);
-        // Scale and position title
         float targetTitleWidth = 500f;
-        float originalWidth = titleTexture.getWidth();
+        float scale = targetTitleWidth / titleTexture.getWidth();
-        float originalHeight = titleTexture.getHeight();
+        titleWidth = titleTexture.getWidth() * scale;
-        float scale = targetTitleWidth / originalWidth;
+        titleHeight = titleTexture.getHeight() * scale;
-        titleWidth = originalWidth * scale;
-        titleHeight = originalHeight * scale;
         titleX = (WINDOW_WIDTH - titleWidth) / 2f;
         titleY = WINDOW_HEIGHT / 2f - titleHeight / 8f;
 
-        // Buttons
         var font = Assets.getFont("ui", 24);
         UITextButton playButton = new UITextButton("Play", font);
         UITextButton loadButton = new UITextButton("Load", font);
@@ -48,16 +77,16 @@ public class MainMenu extends Scene {
         loadButton.setSize(buttonWidth, buttonHeight);
         settingsButton.setSize(buttonWidth, buttonHeight);
         exitButton.setSize(buttonWidth, buttonHeight);
-
+      
         int centerX = WINDOW_WIDTH / 2 - buttonWidth / 2;
         int startY = WINDOW_HEIGHT / 2 - buttonHeight / 2;
-        int buttonSpacing = 65;
+        int spacing = 65;
-
-        playButton.setPosition(centerX, startY);
-        loadButton.setPosition(centerX, startY - buttonSpacing);
-        settingsButton.setPosition(centerX, startY - buttonSpacing * 2);
-        exitButton.setPosition(centerX, startY - buttonSpacing * 3);
 
+        playButton.setSize(buttonWidth, buttonHeight); playButton.setPosition(centerX, startY);
+        loadButton.setSize(buttonWidth, buttonHeight); loadButton.setPosition(centerX, startY - spacing);
+        settingsButton.setSize(buttonWidth, buttonHeight); settingsButton.setPosition(centerX, startY - spacing * 2);
+        exitButton.setSize(buttonWidth, buttonHeight); exitButton.setPosition(centerX, startY - spacing * 3);
+      
         playButton.onClick(() -> log.debug("Play clicked"));
         loadButton.onClick(() -> log.debug("Load clicked"));
         settingsButton.onClick(() -> {
@@ -79,9 +108,56 @@ public class MainMenu extends Scene {
         game.stage.addActor(root);
     }
 
+    private void ensureVideoStarted() {
+        if (videoPlayer == null || videoPrepared) return;
+        if (videoFileHandle == null || !videoFileHandle.exists()) return;
+        if (game.transition == null && game.state != State.MAIN_MENU) return;
+        startVideo();
+    }
+
+    private void startVideo() {
+        try {
+            videoPlayer.setLooping(true);
+            videoPlayer.play(videoFileHandle);
+            videoPrepared = true;
+            videoStartTime = TimeUtils.millis();
+        } catch (Exception e) {
+            log.error("Failed to play video: {}", videoFileHandle.path(), e);
+        }
+    }
+
+    public void forceStartVideo() { // used by Transition for early warm-up
+        if (!videoPrepared && videoFileHandle != null && videoFileHandle.exists()) startVideo();
+    }
+
     @Override
     public void render(SpriteBatch batch) {
-        batch.draw(backgroundTexture, 0, 0, WINDOW_WIDTH, WINDOW_HEIGHT);
+        ensureVideoStarted();
+        if (videoPlayer != null && videoPrepared) {
+            videoPlayer.update();
+            Texture videoTexture = videoPlayer.getTexture();
+            if (videoTexture != null) {
+                if (!firstFrameLogged) {
+                    firstFrameLogged = true;
+                    log.info("Menu video first frame in {} ms", TimeUtils.timeSinceMillis(videoStartTime));
+                }
+                batch.draw(videoTexture, 0, 0, WINDOW_WIDTH, WINDOW_HEIGHT);
+            } else {
+                batch.draw(Assets.getBlackTexture(), 0, 0, WINDOW_WIDTH, WINDOW_HEIGHT);
+            }
+        } else {
+            batch.draw(Assets.getBlackTexture(), 0, 0, WINDOW_WIDTH, WINDOW_HEIGHT);
+        }
         batch.draw(titleTexture, titleX, titleY, titleWidth, titleHeight);
     }
+
+    public void updateVideo() {
+        if (videoPlayer != null && videoPrepared) videoPlayer.update();
+    }
+
+    @Override
+    public void dispose() {
+        super.dispose();
+        if (videoPlayer != null) videoPlayer.dispose();
+    }
 }

app/src/main/java/org/vibecoders/moongazer/scenes/Transition.java

@@ -58,4 +58,4 @@ public class Transition extends Scene {
         to.root.setColor(1, 1, 1, toOpacity);
         to.render(batch);
     }
-}
+}