Add Anvil

README.md

@@ -4,7 +4,7 @@ This repository includes some example doodads for Sketchy Maze.
 You can learn from their scripts or use them as a base for your
 own custom doodads.
 
-![Warp Door](warp-door/door-1.png) ![Character](character/stand-right.png)
+![Warp Door](warp-door/door-1.png) ![Character](character/stand-right.png) ![Anvil](anvil/anvil.png)
 
 All of these doodads are built from PNG images using the
 `doodad` program that comes with the game. Check your guidebook
@@ -18,6 +18,8 @@ example for the doodad commands used.
   built-in creatures.
 * [**Warp Door**](warp-door/): create your own compatible Warp
   Door that you can link to the built-in doors.
+* [**Anvil**](anvil/): the harmless doodad that becomes dangerous
+  while falling.
 
 To do:
 

anvil/Makefile

@@ -0,0 +1,5 @@
+ALL: build
+
+.PHONY: build
+build:
+	./build.sh

anvil/README.md

@@ -0,0 +1,7 @@
+# Example Anvil
+
+![Example Anvil](anvil.png)
+
+This is basically the **Anvil** from the game. It has no solid
+collision, it is affected by gravity, and it is dangerous when
+falling.

anvil/anvil.js

@@ -0,0 +1,51 @@
+// Anvil
+var falling = false;
+
+function main() {
+    // Note: doodad is not "solid" but hurts if it falls on you.
+    Self.SetHitbox(0, 0, 48, 25);
+    Self.SetMobile(true);
+    Self.SetGravity(true);
+
+    // Monitor our Y position to tell if we've been falling.
+    var lastPoint = Self.Position();
+    setInterval(function () {
+        var nowAt = Self.Position();
+        if (nowAt.Y > lastPoint.Y) {
+            falling = true;
+        } else {
+            falling = false;
+        }
+        lastPoint = nowAt;
+    }, 100);
+
+    Events.OnCollide(function (e) {
+        if (!e.Settled) {
+            return;
+        }
+
+        // Were we falling?
+        if (falling) {
+            if (e.InHitbox) {
+                if (e.Actor.IsPlayer()) {
+                    // Fatal to the player.
+                    Sound.Play("crumbly-break.wav");
+                    FailLevel("Watch out for anvils!");
+                    return;
+                }
+                else if (e.Actor.IsMobile()) {
+                    // Destroy mobile doodads.
+                    Sound.Play("crumbly-break.wav");
+                    e.Actor.Destroy();
+                }
+            }
+        }
+    });
+
+    // When we receive power, we reset to our original position.
+    var origPoint = Self.Position();
+    Message.Subscribe("power", function (powered) {
+        Self.MoveTo(origPoint);
+        Self.SetVelocity(Vector(0, 0));
+    });
+}

anvil/build.sh

@@ -0,0 +1,5 @@
+#!/bin/bash
+
+doodad convert -t "Example Anvil" anvil.png example-anvil.doodad
+doodad edit-doodad --tag "category=objects" example-anvil.doodad
+doodad install-script anvil.js example-anvil.doodad