Music: metallic hi-hats and a crash per phrase instead of noise ticks; encode the track at vorbis q3

Makefile

@@ -272,6 +272,7 @@ check-all: cli
 	.cache/bin/aego check examples/native-rotator
 	.cache/bin/aego check examples/platformer
 	.cache/bin/aego test examples/platformer
+	.cache/bin/aego check examples/topdown
 	.cache/bin/aego check examples/native-settings
 	.cache/bin/aego check examples/native-editor
 	.cache/bin/aego check app/playground/examples

engine/res/docs/install.md

@@ -80,7 +80,7 @@ aego edit mygame/scenes/main.aescene
 aego edit --launcher new
 ```
 
-`aego new` creates a 2D project with a scene holding a camera and a sprite, and a script to start from; `--template 3d` and the other templates are listed by `aego help`. In the editor, the Getting Started panel walks through the first six steps: a node, a script, Play, a live tweak, hot reload and fixing an error.
+`aego new` creates a 2D project with a scene holding a camera and a sprite, and a script to start from; `--template 3d` and the other templates are listed by `aego help`. `aego new mygame --example platformer` copies the platformer (a character on Motion 2D with stomps, a pit, a checkpoint and save games) and `--example topdown` the top-down game (a sword, enemies that patrol and chase with a State Machine, coins and lava); the launcher lists the same examples under **Examples**. In the editor, the Getting Started panel walks through the first six steps: a node, a script, Play, a live tweak, hot reload and fixing an error.
 
 | Command | Does |
 |---|---|

examples/platformer/native/module.go

@@ -5,12 +5,6 @@ import (
 	"aego/sdk"
 )
 
-type Health struct {
-	Max     float32 `aego:"max,min=1"`
-	Current float32 `aego:"current,min=0"`
-	Hits    int64   `aego:"hits"`
-}
-
 type EnemyStats struct {
 	Speed    float32     `aego:"speed,min=0,max=10"`
 	Cooldown float32     `aego:"cooldown,min=0,max=5"`
@@ -25,38 +19,10 @@ func (Module) Info() sdk.ModuleInfo {
 }
 
 func (Module) Register(r *sdk.Registry) error {
-	if err := sdk.Component[Health](r, sdk.Name("game.Health"), sdk.Doc("hit points of a character"), sdk.Persist("current", "hits")).Err(); err != nil {
-		return err
-	}
 	if err := sdk.DataType[EnemyStats](r, sdk.Name("mygame.EnemyStats"), sdk.Doc("movement and attack numbers of one kind of enemy")).Err(); err != nil {
 		return err
 	}
 	sdk.Live[EnemyStats](r, "speed")
-	m := r.ScriptModule("mygame/combat")
-	sdk.Proc2(m, "Damage", func(c *sdk.ScriptCtx, target sdk.NodeHandle, amount int64) {
-		if c.Scene == nil || !c.Scene.IsAlive(target) {
-			c.Fail("damage target is nil or destroyed")
-			return
-		}
-		h, ok := sdk.Get[Health](c.Scene, target)
-		if !ok {
-			return
-		}
-		h.Current -= float32(amount)
-		h.Hits++
-		if h.Current <= 0 {
-			h.Current = h.Max
-		}
-	})
-	sdk.Func1(m, "HealthOf", func(c *sdk.ScriptCtx, target sdk.NodeHandle) float32 {
-		if c.Scene == nil {
-			return 0
-		}
-		if h, ok := sdk.Get[Health](c.Scene, target); ok {
-			return h.Current
-		}
-		return 0
-	})
 	return nil
 }
 

examples/platformer/prefabs/enemy.aeprefab

@@ -39,13 +39,19 @@ prefab version=1 {
       density=1
       size=[0.9, 0.9]
     }
-    component "physics.PolygonCollider2D" version=1 {
-      offset=[0, 0]
-      isTrigger=true
-      friction=0.6
-      restitution=0
-      density=0
-      points=[[-0.35, -0.85], [0.35, -0.85], [0.35, -0.65], [-0.35, -0.65]]
+    component "gameplay.Health" version=1 {
+      max=1
+      team=1
+      invulnTime=0
+    }
+    component "gameplay.Hurtbox2D" version=1 {
+      area=[-0.4, -0.45, 0.8, 0.35]
+    }
+    component "gameplay.Hitbox2D" version=1 {
+      area=[-0.45, -0.1, 0.9, 0.55]
+      policy=periodic
+      knockback=[7, 0]
+      knockbackFromCenter=true
     }
     component "save.Persist" version=1 {
       noTransform=false
@@ -55,7 +61,6 @@ prefab version=1 {
       script "mygame.enemy.EnemyAI" enabled=true {
         PointA=node("00000000000000000000000000000000")
         PointB=node("00000000000000000000000000000000")
-        Target=node("00000000000000000000000000000000")
         Stats=asset("da7a0000000000000000000000000001")
         DieSound=asset("a0d10000000000000000000000000013")
       }

examples/platformer/scripts/enemy/enemy.aes

@@ -3,10 +3,7 @@ package enemy
 import (
 	"aego/audio"
 	"aego/curve"
-	"aego/physics"
-	"aego/timer"
 	"aego/tween"
-	"mygame/combat"
 	"mygame/shared"
 )
 
@@ -19,9 +16,6 @@ script EnemyAI {
 	@export
 	var PointB NodeRef
 
-	@export
-	var Target NodeRef
-
 	@export(tip="Speed, cooldown, damage and tint of this kind of enemy")
 	var Stats AssetRef<EnemyStats>
 
@@ -29,16 +23,15 @@ script EnemyAI {
 	var DieSound AssetRef<AudioEvent>
 
 	var toB bool = true
-	var hit timer.Timer
 	var dead bool
 	var fade Connection
 
 	func Ready() {
-		hit = timer.Cooldown(Stats.Cooldown)
-		sprite := node.Get<SpriteRenderer>()
-		if sprite != nil {
-			sprite.Tint = Stats.Tint
-		}
+		node.Get<SpriteRenderer>().Tint = Stats.Tint
+		hit := node.Get<Hitbox2D>()
+		hit.Damage = Stats.Damage
+		hit.Period = Stats.Cooldown
+		node.Get<Health>().Died.Connect(OnDied)
 	}
 
 	func FixedUpdate(dt float) {
@@ -46,9 +39,6 @@ script EnemyAI {
 			return
 		}
 		body := node.Get<Body2D>()
-		if body == nil {
-			return
-		}
 		goal := PointA.Position()
 		if toB {
 			goal = PointB.Position()
@@ -62,15 +52,10 @@ script EnemyAI {
 		body.SetVelocity(v)
 	}
 
-	func OnTriggerEnter(other NodeRef) {
-		if dead || other != Target {
-			return
-		}
-		tb := other.Get<Body2D>()
-		if tb == nil || tb.Velocity.Y <= 0 {
-			return
-		}
+	// OnDied stops the attack, tells the player and fades the enemy out.
+	func OnDied(source NodeRef) {
 		dead = true
+		node.Get<Hitbox2D>().Deactivate()
 		Died.Emit()
 		audio.PlayEventAt(DieSound, node.Position())
 		fade = tween.ToFloat(node, "SpriteRenderer.Tint.a", 0, 0.2, curve.OutQuad).Completed.Connect(OnFaded)
@@ -79,11 +64,4 @@ script EnemyAI {
 	func OnFaded(finished bool) {
 		node.Destroy()
 	}
-
-	func OnCollisionEnter(other NodeRef, c physics.Contact) {
-		if dead || other != Target || c.Normal.Y > 0.5 || !hit.Use() {
-			return
-		}
-		combat.Damage(Target, Stats.Damage)
-	}
 }

examples/topdown/.gitignore

@@ -0,0 +1,2 @@
+.aego/
+exports/

examples/topdown/project.aego

@@ -0,0 +1,67 @@
+project version=1 {
+  name="Top-down"
+  module="topdown"
+  mainScene=asset("70d0000000000000000000000000a001")
+  native=false
+  window {
+    width=1280
+    height=720
+    title="Aego Top-down"
+  }
+  input version=2 {
+    stack=[Gameplay]
+    action {
+      name=MoveX
+      type=axis1
+      bind=["Key.A/Key.D", "Key.Left/Key.Right", "Pad.LeftX"]
+    }
+    action {
+      name=MoveY
+      type=axis1
+      bind=["Key.W/Key.S", "Key.Up/Key.Down", "Pad.LeftY"]
+    }
+    action {
+      name=AimX
+      type=axis1
+      bind=["Pad.RightX"]
+    }
+    action {
+      name=AimY
+      type=axis1
+      bind=["Pad.RightY"]
+    }
+    action {
+      name=Attack
+      type=button
+      bind=["Key.J", "Mouse.Left", "Pad.X"]
+    }
+    action {
+      name=Pause
+      type=button
+      bind=["Key.Escape", "Pad.Start"]
+    }
+    action {
+      name=Back
+      type=button
+      bind=["Key.Escape", "Pad.B"]
+    }
+    context {
+      name=Gameplay
+      actions=[MoveX, MoveY, AimX, AimY, Attack, Pause]
+    }
+    context {
+      name=Menu
+      priority=10
+      consume=true
+      actions=[Back]
+    }
+  }
+  physics {
+    gravity=[0, 0]
+    layers=[Default, Walls, Player, Enemy]
+    collide {
+      Player=[Walls, Enemy]
+      Enemy=[Walls, Player]
+    }
+  }
+}

examples/topdown/scenes/main.aescene.meta

@@ -0,0 +1,6 @@
+meta version=1 {
+  id="70d0000000000000000000000000a001"
+  importer="scene"
+  importerVersion=1
+  settings {}
+}

examples/topdown/scripts/enemy/enemy.aes

@@ -0,0 +1,58 @@
+package enemy
+
+import "aego/math"
+
+// Grunt patrols between two points and chases the player while it is close; its State Machine runs FixedPatrol or FixedChase.
+script Grunt {
+	@export
+	var Player NodeRef
+
+	@export
+	var PointA NodeRef
+
+	@export
+	var PointB NodeRef
+
+	@export(min=0)
+	var SeeRange float = 4
+
+	@export(min=0)
+	var LoseRange float = 6
+
+	var toB bool = true
+
+	func toPlayer() Vec2 {
+		return Player.WorldPosition() - node.WorldPosition()
+	}
+
+	func FixedPatrol(dt float) {
+		goal := PointA.WorldPosition()
+		if toB {
+			goal = PointB.WorldPosition()
+		}
+		d := goal - node.WorldPosition()
+		if math.Length(d) < 0.2 {
+			toB = !toB
+		}
+		node.Get<Motion2D>().MoveDir(math.Normalize(d) * 0.5)
+		if Player != nil && Player.IsAlive() && math.Length(toPlayer()) < SeeRange {
+			node.Get<StateMachine>().Go("Chase")
+		}
+	}
+
+	func FixedChase(dt float) {
+		if Player == nil || !Player.IsAlive() || math.Length(toPlayer()) > LoseRange {
+			node.Get<StateMachine>().Go("Patrol")
+			return
+		}
+		node.Get<Motion2D>().MoveDir(math.Normalize(toPlayer()))
+	}
+
+	func EnterChase() {
+		node.Get<SpriteRenderer>().Tint = Color{1, 0.35, 0.35, 1}
+	}
+
+	func ExitChase() {
+		node.Get<SpriteRenderer>().Tint = Color{0.75, 0.5, 0.5, 1}
+	}
+}

examples/topdown/scripts/enemy/enemy.aes.meta

@@ -0,0 +1,6 @@
+meta version=1 {
+  id="70d0000000000000000000000000a012"
+  importer="script"
+  importerVersion=1
+  settings {}
+}

examples/topdown/scripts/hud/hud.aes

@@ -0,0 +1,43 @@
+package hud
+
+import (
+	"aego/camera"
+	"aego/debug"
+)
+
+// Coins counts the collected coins and writes the count in the corner of the view.
+script Coins {
+	@export
+	var C1 NodeRef
+
+	@export
+	var C2 NodeRef
+
+	@export
+	var C3 NodeRef
+
+	@export
+	var C4 NodeRef
+
+	var coins int
+	var k1 Connection
+	var k2 Connection
+	var k3 Connection
+	var k4 Connection
+
+	func Ready() {
+		k1 = C1.Get<Pickup2D>().Collected.Connect(OnCollected)
+		k2 = C2.Get<Pickup2D>().Collected.Connect(OnCollected)
+		k3 = C3.Get<Pickup2D>().Collected.Connect(OnCollected)
+		k4 = C4.Get<Pickup2D>().Collected.Connect(OnCollected)
+	}
+
+	func OnCollected(by NodeRef) {
+		coins++
+	}
+
+	func Update(dt float) {
+		p := camera.LogicalPose().Position
+		debug.Text(Vec2{p.X - 12, p.Y - 6.5}, "coins " + string(coins) + " / 4", Color{1, 0.85, 0.2, 1})
+	}
+}

examples/topdown/scripts/hud/hud.aes.meta

@@ -0,0 +1,6 @@
+meta version=1 {
+  id="70d0000000000000000000000000a013"
+  importer="script"
+  importerVersion=1
+  settings {}
+}

examples/topdown/scripts/player/player.aes

@@ -0,0 +1,57 @@
+package player
+
+import (
+	"aego/input"
+	"aego/math"
+	"aego/settings"
+	"aego/timer"
+)
+
+// Hero moves with the left stick or WASD and swings its Sword towards the right stick, the mouse or the way it walks.
+script Hero {
+	@export
+	var Sword NodeRef
+
+	@export(min=0)
+	var Reach float = 0.8
+
+	var facing Vec2 = Vec2{1, 0}
+	var swing timer.Timer
+	var mouse Vec2
+	var useMouse bool
+
+	func Ready() {
+		swing = timer.Cooldown(0.3)
+		mouse = input.MousePos()
+	}
+
+	func Update(dt float) {
+		move := Vec2{input.Axis("MoveX"), input.Axis("MoveY")}
+		node.Get<Motion2D>().MoveDir(move)
+		aim := Vec2{input.Axis("AimX"), input.Axis("AimY")}
+		p := input.MousePos()
+		if math.Dist(p, mouse) > 2 {
+			mouse = p
+			useMouse = true
+		}
+		if math.Length(aim) > 0.3 {
+			facing = math.Normalize(aim)
+			useMouse = false
+		} else if useMouse {
+			to := input.MouseWorld() - node.WorldPosition()
+			if math.Length(to) > 0.2 {
+				facing = math.Normalize(to)
+			}
+		} else if math.Length(move) > 0.1 {
+			facing = math.Normalize(move)
+		}
+		Sword.SetPosition(facing * Reach)
+		Sword.SetRotation(math.Angle(facing))
+		if input.Pressed("Attack") && swing.Use() {
+			Sword.Get<Hitbox2D>().Pulse()
+		}
+		if input.Pressed("Pause") {
+			settings.OpenView()
+		}
+	}
+}

examples/topdown/scripts/player/player.aes.meta

@@ -0,0 +1,6 @@
+meta version=1 {
+  id="70d0000000000000000000000000a011"
+  importer="script"
+  importerVersion=1
+  settings {}
+}

modules/gameplay/res/docs/gameplay.md

@@ -13,6 +13,8 @@ The gameplay module adds the parts most 2D games rebuild by hand: a character co
 
 Quick start: Create → Gameplay → Platformer Character gives a node with a kinematic Rigid Body 2D, a collider, Motion 2D, Health, Hurtbox 2D and Respawn. Give it a script that calls `Move` and `Jump`, add a floor and press Play.
 
+Two complete games use the kit: `aego new mygame --example platformer` (stomping enemies with a foot hitbox, a pit with a kill zone, a checkpoint, a persisted respawn point and a state machine for the player's look) and `aego new mygame --example topdown` (a sword swung towards the stick, the mouse or the walking direction, enemies whose State Machine switches between Patrol and Chase, coins and lava). The launcher offers both under **Examples**.
+
 | Component | Purpose |
 |---|---|
 | Motion 2D | walks, jumps and slides a kinematic body: slopes, steps, moving platforms, top-down movement |

tests/agent/agent_test.go

@@ -208,18 +208,18 @@ func TestApplyAndInverse(t *testing.T) {
 
 func TestPrefabFlow(t *testing.T) {
 	e := open(t)
-	out := e.must("prefab.create", agent.Args{"file": level, "node": "Ground", "out": "prefabs/ground"})
+	out := e.must("prefab.create", agent.Args{"file": level, "node": "GroundLeft", "out": "prefabs/ground"})
 	if len(out.Created) != 1 {
 		t.Fatalf("create %+v", out)
 	}
 	ins := e.must("prefab.instantiate", agent.Args{"file": level, "prefab": "prefabs/ground.aeprefab", "name": "Ground2"})
 	second := ins.Created[0]
-	e.must("scene.set", agent.Args{"file": level, "node": "Ground", "path": "SpriteRenderer.tint", "value": "#123456ff"})
-	e.must("prefab.apply", agent.Args{"file": level, "node": "Ground", "level": "property", "owner": "engine.SpriteRenderer", "field": "tint"})
+	e.must("scene.set", agent.Args{"file": level, "node": "GroundLeft", "path": "SpriteRenderer.tint", "value": "#123456ff"})
+	e.must("prefab.apply", agent.Args{"file": level, "node": "GroundLeft", "level": "property", "owner": "engine.SpriteRenderer", "field": "tint"})
 	if got := e.must("scene.get", agent.Args{"file": level, "node": second, "path": "SpriteRenderer.tint"}).Text; got != "#123456ff" {
 		t.Fatalf("second instance tint %q", got)
 	}
-	again := e.must("prefab.apply", agent.Args{"file": level, "node": "Ground", "level": "property", "owner": "engine.SpriteRenderer", "field": "tint"})
+	again := e.must("prefab.apply", agent.Args{"file": level, "node": "GroundLeft", "level": "property", "owner": "engine.SpriteRenderer", "field": "tint"})
 	if len(again.Notes) != 1 || again.Notes[0] != "nothing to apply" {
 		t.Fatalf("second apply %+v", again)
 	}

tests/agent/testdata/schema_list.json

@@ -270,11 +270,6 @@
       "owner": "save",
       "doc": "Persist saves the node's transform and enabled flag in save games."
     },
-    {
-      "name": "game.Health",
-      "kind": "component",
-      "owner": "mygame"
-    },
     {
       "name": "audio.AudioEvent",
       "kind": "data",

tests/fixture/platformer.go

@@ -11,12 +11,6 @@ import (
 	"aego/sdk"
 )
 
-type health struct {
-	Max     float32 `aego:"max,min=1"`
-	Current float32 `aego:"current,min=0"`
-	Hits    int64   `aego:"hits"`
-}
-
 type enemyStats struct {
 	Speed    float32     `aego:"speed,min=0,max=10"`
 	Cooldown float32     `aego:"cooldown,min=0,max=5"`
@@ -31,24 +25,10 @@ func (Platformer) Info() sdk.ModuleInfo {
 }
 
 func (Platformer) Register(r *sdk.Registry) error {
-	if err := sdk.Component[health](r, sdk.Name("game.Health"), sdk.Persist("current", "hits")).Err(); err != nil {
-		return err
-	}
 	if err := sdk.DataType[enemyStats](r, sdk.Name("mygame.EnemyStats")).Err(); err != nil {
 		return err
 	}
-	m := r.ScriptModule("mygame/combat")
-	sdk.Proc2(m, "Damage", func(c *sdk.ScriptCtx, target sdk.NodeHandle, amount int64) {
-		if h, ok := sdk.Get[health](c.Scene, target); ok {
-			h.Current -= float32(amount)
-		}
-	})
-	sdk.Func1(m, "HealthOf", func(c *sdk.ScriptCtx, target sdk.NodeHandle) float32 {
-		if h, ok := sdk.Get[health](c.Scene, target); ok {
-			return h.Current
-		}
-		return 0
-	})
+	sdk.Live[enemyStats](r, "speed")
 	return nil
 }
 

tests/integration/defaults_test.go

@@ -54,11 +54,11 @@ func TestScriptVectorDefaultPublished(t *testing.T) {
 	if !ok {
 		t.Fatal("PlayerController is not published")
 	}
-	fd, ok := td.Field("JumpImpulse")
-	if !ok || !fd.HasDefault || fd.Default.V != (mathx.Vec2{Y: -5}) {
-		t.Fatalf("JumpImpulse default %+v", fd)
+	fd, ok := td.Field("Bounce")
+	if !ok || !fd.HasDefault || fd.Default.V != (mathx.Vec2{Y: -9}) {
+		t.Fatalf("Bounce default %+v", fd)
 	}
-	if v := pf.field("JumpImpulse"); v.Lane(1) != -5 {
-		t.Fatalf("instance JumpImpulse lane y = %v", v.Lane(1))
+	if v := pf.field("Bounce"); v.Lane(1) != -9 {
+		t.Fatalf("instance Bounce lane y = %v", v.Lane(1))
 	}
 }

tests/integration/examples_test.go

@@ -24,6 +24,7 @@ func TestExamplesCanonical(t *testing.T) {
 	}{
 		{"platformer", []sdk.Module{combatModule{}}},
 		{"physics-sandbox", nil},
+		{"topdown", nil},
 	} {
 		t.Run(tc.dir, func(t *testing.T) {
 			canonicalExample(t, filepath.Join("..", "..", "examples", tc.dir), tc.mods)

tests/integration/keyframes_test.go

@@ -4,6 +4,7 @@ import (
 	"aego/contracts/debugdraw"
 	"aego/contracts/persistence"
 	"aego/modules/debug"
+	"aego/modules/gameplay"
 	"aego/modules/physics"
 	"aego/save"
 	"aego/script/runtime"
@@ -249,7 +250,7 @@ func TestKeyframeSeekInsideCoroutineWait(t *testing.T) {
 	for i := 0; i < 240; i++ {
 		pc.Tick(1.0 / 60)
 		hashes[i+1] = pausedHash(pc)
-		if h, ok := scene.Get[Health](pc.Scene(), pc.Scene().Find(pc.Scene().Root(), "Player")); ok && h.Hits > 0 && hit == 0 {
+		if h, ok := scene.Get[gameplay.Health](pc.Scene(), pc.Scene().Find(pc.Scene().Root(), "Player")); ok && h.Current < h.Max && hit == 0 {
 			hit = i + 1
 		}
 	}

tests/integration/prefab_examples_test.go

@@ -312,8 +312,8 @@ func TestPlatformerEnemyPrefabs(t *testing.T) {
 		if !ok || !pi.Owner || s.Local(h).Position.X != x {
 			t.Fatalf("%s must be an instance at x=%v", name, x)
 		}
-		if !hasComponent(s, h, "physics.Body2D") || !hasComponent(s, h, "physics.PolygonCollider2D") {
-			t.Fatalf("%s lost its body or stomp trigger", name)
+		if !hasComponent(s, h, "physics.Body2D") || !hasComponent(s, h, "gameplay.Hurtbox2D") || !hasComponent(s, h, "gameplay.Hitbox2D") {
+			t.Fatalf("%s lost its body, hurtbox or hitbox", name)
 		}
 	}
 	out := string(sceneio.SaveWith(s, lib))

tests/integration/rewind_test.go

@@ -1,6 +1,7 @@
 package integration
 
 import (
+	"os"
 	"testing"
 
 	"aego/app/edit"
@@ -9,6 +10,7 @@ import (
 	"aego/core/rewind"
 	"aego/editor/core/play"
 	"aego/modules/camera"
+	inputmod "aego/modules/input"
 	"aego/modules/physics"
 	"aego/platform"
 	"aego/platform/input"
@@ -180,31 +182,33 @@ func cameraHash(t *testing.T, pc *play.Controller) [32]byte {
 }
 
 func TestEditorRewindKeepsTheCamera(t *testing.T) {
-	s, pc := rewindSession(t)
-	in := s.Host.Engine.Input()
-	hold := func(k input.Scancode, down bool) {
-		kind := platform.EvKeyUp
-		if down {
-			kind = platform.EvKeyDown
-		}
-		platform.ApplyInput(in, platform.Event{Kind: kind, Key: input.KeyEvent{Scan: k}})
+	_, pc := rewindSession(t)
+	data, err := os.ReadFile(runFile)
+	if err != nil {
+		t.Fatal(err)
 	}
+	actions := inputmod.Of(pc.World())
+	if actions == nil {
+		t.Fatal("the play world has no input service")
+	}
+	if _, err := actions.Replay(data); err != nil {
+		t.Fatal(err)
+	}
+	const before, inside = 20, 330
 	marks := map[int][32]byte{}
-	for i := 0; i < 240; i++ {
-		hold(input.KeyD, i >= 10 && i < 200)
-		hold(input.KeySpace, i >= 40 && i < 44)
+	for i := 1; i <= 360; i++ {
 		pc.Tick(1.0 / 60)
-		if i+1 == 20 || i+1 == 120 {
-			marks[i+1] = cameraHash(t, pc)
+		if i == before || i == inside {
+			marks[i] = cameraHash(t, pc)
 		}
 	}
 	if camera.Of(pc.World()).Active("").IsZero() {
 		t.Fatal("the platformer camera has no active virtual camera")
 	}
-	if marks[20] == marks[120] {
+	if marks[before] == marks[inside] {
 		t.Fatal("the camera state is the same before and inside the arena zone")
 	}
-	for _, f := range []int{120, 20, 120} {
+	for _, f := range []int{inside, before, inside} {
 		if err := pc.Seek(f); err != nil {
 			t.Fatal(err)
 		}

tests/integration/signals_test.go

@@ -31,23 +31,25 @@ func TestComponentSignalReachesScriptAndGo(t *testing.T) {
 	root := copyExample(t, "platformer")
 	patch(t, filepath.Join(root, "scripts", "player", "player.aes"),
 		"\tvar blink Coroutine\n", "\tvar blink Coroutine\n\tvar hitConn Connection\n\tvar signalHits int\n",
-		"\t\twatch(EnemyB)\n", "\t\twatch(EnemyB)\n\t\thitConn = node.Get<Health>().Hit.Connect(OnHit)\n",
+		"\t\twatch(EnemyB)\n", "\t\twatch(EnemyB)\n\t\thitConn = node.Get<Health>().Healed.Connect(OnHit)\n",
 		"\tfunc OnEnemyDied() {", "\tfunc OnHit(hits int) {\n\t\tsignalHits = hits\n\t}\n\n\tfunc OnEnemyDied() {")
 	pf := platformerAt(t, root)
 	pf.step(1)
 	var goHits int64
 	ctx := &sdk.Context{World: pf.app.Engine.MainWorld(), Engine: pf.app.Engine}
-	if _, err := sdk.Connect1[int64](ctx, pf.player, "Health.Hit", func(n int64) { goHits = n }); err != nil {
+	if _, err := sdk.Connect1[int64](ctx, pf.player, "Health.Healed", func(n int64) { goHits = n }); err != nil {
 		t.Fatal(err)
 	}
 	pf.step(29)
 	pf.hitPlayer(t)
-	hits := pf.health().Hits
+	pf.health().Heal(1)
+	pf.step(1)
+	hits := int64(1)
 	if got := pf.field("signalHits").Int(); got != hits {
-		t.Fatalf("script handler saw %d hits, health has %d", got, hits)
+		t.Fatalf("script handler saw %d healed, want %d", got, hits)
 	}
 	if goHits != hits {
-		t.Fatalf("Go handler saw %d hits, health has %d", goHits, hits)
+		t.Fatalf("Go handler saw %d healed, want %d", goHits, hits)
 	}
 	if !pf.app.Scripts.SignalConnected(pf.field("hitConn")) {
 		t.Fatal("the script connection must stay connected")

tests/integration/testdata/platformer_run.aeinput

@@ -0,0 +1,64 @@
+aeinput 1
+project platformer
+seed 0
+fixedHz 60
+players 1
+actions Move Jump Attack Pause Back QuickSave QuickLoad ToggleSettings
+frames 900
+s 1 0 3 3f800000 0
+s 31 1 3 3f800000 0
+s 71 0 1 3f5ea880 0
+s 71 1 4 0 0
+s 72 0 1 3f384200 0
+s 73 0 1 3f161fc0 0
+s 74 0 4 3ec5d900 0
+s 75 0 0 3df54200 0
+s 76 0 0 be055f00 0
+s 77 0 0 beba2680 0
+s 78 0 3 bf13b040 0
+s 79 0 1 bf452e80 0
+s 80 0 1 bf718e00 0
+s 81 0 1 bf800000 0
+s 96 0 1 bf7f3440 0
+s 97 0 1 bf58cdc0 0
+s 98 0 1 bf3296c0 0
+s 99 0 1 bf10a400 0
+s 100 0 4 bee5eb00 0
+s 101 0 0 beb31680 0
+s 102 0 0 be88cb00 0
+s 103 0 0 be4e1000 0
+s 104 0 0 be1b9b00 0
+s 105 0 0 bdf46e00 0
+s 106 0 0 bdd3c800 0
+s 107 0 0 bdd54400 0
+s 108 0 3 3f800000 0
+s 149 0 4 0 0
+s 163 0 3 3f800000 0
+s 163 1 3 3f800000 0
+s 203 1 4 0 0
+s 225 0 1 bf800000 0
+s 245 0 1 3f800000 0
+s 269 0 1 bf800000 0
+s 280 0 1 3f800000 0
+s 296 0 1 bf800000 0
+s 307 0 1 3f800000 0
+s 321 0 4 3e862f80 0
+s 322 0 0 3df3e400 0
+s 323 0 0 bbed4000 0
+s 324 0 0 bdef6a00 0
+s 325 0 0 be538500 0
+s 326 0 0 be8d6d00 0
+s 327 0 0 bea6da80 0
+s 328 0 0 beb60a00 0
+s 329 0 0 bebafc80 0
+s 330 0 0 beb5b180 0
+s 331 0 0 bea62900 0
+s 332 0 0 be8c6300 0
+s 333 0 0 be50bf00 0
+s 334 0 0 bde87a00 0
+s 335 0 0 bb500000 0
+s 336 0 0 3dda6800 0
+s 337 0 0 3e4c9800 0
+s 338 0 0 3e8bc080 0
+s 339 0 3 3f800000 0
+s 391 0 4 0 0

tools/gentones/main.go

@@ -151,7 +151,7 @@ func writeMeta(path, id, importer string, version int, s pipeline.Settings) erro
 }
 
 func encodeOgg(bin string, src []byte) ([]byte, error) {
-	cmd := exec.Command(bin, "-hide_banner", "-loglevel", "error", "-f", "wav", "-i", "pipe:0", "-c:a", "libvorbis", "-q:a", "1", "-f", "ogg", "pipe:1")
+	cmd := exec.Command(bin, "-hide_banner", "-loglevel", "error", "-f", "wav", "-i", "pipe:0", "-c:a", "libvorbis", "-q:a", "3", "-f", "ogg", "pipe:1")
 	cmd.Stdin = bytes.NewReader(src)
 	var out, stderr bytes.Buffer
 	cmd.Stdout, cmd.Stderr = &out, &stderr

tools/gentones/music.go

@@ -113,15 +113,18 @@ func (s *song) drumBar(bar int) {
 			s.snare(s.at(bar, b), 0.45+0.15*(b-3)*4)
 		}
 	}
+	if bar%8 == 0 {
+		s.cymbal(s.at(bar, 0), 0.45, 0.9, 4500, 0.5)
+	}
 	for e := range 8 {
-		v, decay := 0.55, 0.022
+		v, decay := 0.55, 0.035
 		if e%2 == 1 {
 			v = 1
 		}
 		if e == 7 && bar%2 == 1 {
-			decay = 0.11
+			v, decay = 0.9, 0.16
 		}
-		s.hat(s.at(bar, float64(e)*0.5), v, decay)
+		s.cymbal(s.at(bar, float64(e)*0.5), v, decay, 7000, 0.1)
 	}
 }
 
@@ -157,15 +160,34 @@ func (s *song) snare(at int, v float64) {
 	}
 }
 
-func (s *song) hat(at int, v, decay float64) {
-	n := int((decay*6 + 0.01) * rate)
-	p1, p2 := 0.0, 0.0
+var metal = [6]float64{205.3, 304.4, 369.6, 522.7, 540, 800}
+
+// cymbal is six detuned square waves and noise through a three-pole high-pass, like an 808's metal circuit.
+func (s *song) cymbal(at int, v, decay, cutoff, wet float64) {
+	n := int((decay*5 + 0.01) * rate)
+	var ph [6]float64
+	a := onePole(cutoff)
+	l1, l2, l3 := 0.0, 0.0, 0.0
+	v *= 0.9 + 0.1*s.rnd.next()
 	for j := range n {
 		t := float64(j) / rate
-		x := s.rnd.next()
-		h := x - 2*p1 + p2
-		p2, p1 = p1, x
-		s.add(s.drums, at+j, 0.045*v*h*math.Exp(-t/decay)*edge(j, n, rate/2000))
+		m := 0.0
+		for k, f := range metal {
+			dt := f / rate
+			ph[k] += dt
+			ph[k] -= math.Floor(ph[k])
+			q := ph[k] + 0.5
+			m += blepSaw(ph[k], dt) - blepSaw(q-math.Floor(q), dt)
+		}
+		x := m/6 + 0.5*s.rnd.next()
+		l1 += a * (x - l1)
+		h1 := x - l1
+		l2 += a * (h1 - l2)
+		h2 := h1 - l2
+		l3 += a * (h2 - l3)
+		y := 2 * v * (h2 - l3) * math.Exp(-t/decay) * math.Min(t/0.0015, 1) * edge(j, n, rate/2000)
+		s.add(s.drums, at+j, y)
+		s.add(s.reverb, at+j, wet*y)
 	}
 }