Anvil and Camera Focus doodads

objects/anvil.js

@@ -14,6 +14,7 @@ function main() {
         let nowAt = Self.Position();
         if (nowAt.Y > lastPoint.Y) {
             falling = true;
+            Self.CameraFollowMe();
         } else {
             falling = false;
         }

regions/Makefile

@@ -23,6 +23,10 @@ build:
 	doodad convert -t "Power Source" power-64.png power-source.doodad
 	doodad install-script power.js power-source.doodad
 
+	# Look At Me
+	doodad convert -t "Look At Me" camera-focus.png camera-focus.doodad
+	doodad install-script camera-focus.js camera-focus.doodad
+
 	# Warp Door
 	doodad convert -t "Invisible Warp Door" warp-door-64.png reg-warp-door.doodad
 	doodad edit-doodad --tag "color=invisible" reg-warp-door.doodad

regions/camera-focus.js

@@ -0,0 +1,43 @@
+// Camera Region
+//
+// When it receives power, it attracts the camera's focus for a while.
+
+// configuration
+const ticksToInsist = 24;
+
+let powered = false;
+
+function main() {
+    Self.Hide();
+
+    let timer = null;
+
+    Message.Subscribe("power", (v) => {
+        if (powered && !v) {
+            // Lost power, we can do this again next time.
+            powered = false;
+            if (timer !== null) {
+                clearInterval(timer);
+                timer = null;
+            }
+            return;
+        }
+
+        // Look at me!
+        Self.CameraFollowMe();
+
+        // And insist a while.
+        if (timer === null) {
+            let insistUntil = GetTick() + ticksToInsist;
+            timer = setInterval(() => {
+                if (GetTick() < insistUntil) {
+                    Self.CameraFollowMe();
+                } else {
+                    clearInterval(timer);
+                }
+            }, 10);
+        }
+
+        powered = v;
+    })
+}