feat: first player progress display

app/src/main/java/gui/widget/MultiPlayerCompleteProgress.java

@@ -0,0 +1,28 @@
+package gui.widget;
+
+import game.Game;
+import game.Player;
+import imgui.ImGui;
+import imgui.ImVec2;
+
+public class MultiPlayerCompleteProgress {
+
+	private final Game game;
+	private final int emptyCellCount;
+	private final ImVec2 progressSize = new ImVec2(700, 50);
+	private final SmoothProgressBar progressBar;
+
+	public MultiPlayerCompleteProgress(Game game) {
+		this.game = game;
+		this.emptyCellCount = game.getDoku().getEmptyCells().size();
+		this.progressBar = new SmoothProgressBar();
+	}
+
+	public void render() {
+		Player firstPlayer = game.getLeaderboard().get(0);
+		ImGui.setCursorPosX(ImGui.getIO().getDisplaySizeX() / 2.0f - progressSize.x / 2.0f);
+		String progressText = firstPlayer.getPseudo() + " - " + firstPlayer.getScore() + "/" + emptyCellCount;
+		this.progressBar.render(progressText, progressSize, 1.0f - firstPlayer.getScore() / (float) emptyCellCount);
+	}
+
+}

app/src/main/java/gui/widget/SmoothProgressBar.java

@@ -0,0 +1,21 @@
+package gui.widget;
+
+import imgui.ImGui;
+import imgui.ImVec2;
+
+public class SmoothProgressBar {
+
+	private float lastProgress = 0;
+	private final float speed = 2.0f;
+	private final float clipConstant = 0.001f;
+
+	public void render(String label, ImVec2 size, float progress) {
+		float delta = progress - lastProgress;
+		if (Math.abs(delta) < clipConstant)
+			lastProgress = progress;
+		else
+			lastProgress = lastProgress + delta * ImGui.getIO().getDeltaTime() * speed;
+		ImGui.progressBar(lastProgress, size, label);
+	}
+
+}