add /LabelStack

1 files changed, 72 insertions, 0 deletions

diff --git a/core/src/ch/asynk/tankontank/game/hud/LabelStack.java b/core/src/ch/asynk/tankontank/game/hud/LabelStack.java
new file mode 100644
index 0000000..cbdcacf
--- /dev/null
+++ b/core/src/ch/asynk/tankontank/game/hud/LabelStack.java
@@ -0,0 +1,72 @@
+package ch.asynk.tankontank.game.hud;
+
+import java.util.ArrayDeque;
+
+import com.badlogic.gdx.graphics.g2d.Batch;
+import com.badlogic.gdx.graphics.g2d.BitmapFont;
+
+import ch.asynk.tankontank.engine.gfx.Animation;
+
+public class LabelStack extends Label implements Animation
+{
+    class MsgInfo
+    {
+        String text;
+        float duration;
+        Position position;
+        MsgInfo(String text, float duration, Position position)
+        {
+            this.text = text;
+            this.duration = duration;
+            this.position = position;
+        }
+    }
+
+    private float duration;
+    private float elapsed;
+    private ArrayDeque<MsgInfo> stack;
+
+    public LabelStack(BitmapFont font, float padding)
+    {
+        super(font, padding);
+        this.visible = false;
+        this.stack = new ArrayDeque<MsgInfo>();
+    }
+
+    public void pushWrite(String text, float duration, Position position)
+    {
+        if (visible)
+            stack.push(new MsgInfo(text, duration, position));
+        else
+            write(text, duration, position);
+    }
+
+    public void write(String text, float duration, Position position)
+    {
+        this.position = position;
+        write(text, duration);
+    }
+
+    public void write(String text, float duration)
+    {
+        this.duration = duration;
+        this.visible = true;
+        this.elapsed = 0f;
+        write(text);
+    }
+
+    @Override
+    public boolean animate(float delta)
+    {
+        if (!visible) return true;
+        elapsed += delta;
+        if (elapsed >= duration) {
+           visible = false;
+           if (stack.size() > 0) {
+               MsgInfo info = stack.pop();
+               write(info.text, info.duration, info.position);
+           }
+        }
+        return false;
+    }
+}