fix: 1. the default animation's state should always be set to 'loop'.

2. when any other animation (excluding 'die') stops, the default animation should commence.

sprite.go

@@ -97,8 +97,9 @@ type Sprite struct {
 	hasOnCloned  bool
 	hasOnTouched bool
 
-	gamer    reflect.Value
-	lastAnim *anim.Anim
+	gamer             reflect.Value
+	lastAnim          *anim.Anim
+	isWaitingStopAnim bool
 }
 
 func (p *Sprite) SetDying() { // dying: visible but can't be touched
@@ -193,12 +194,9 @@ func (p *Sprite) init(
 	}
 }
 func (p *Sprite) awake() {
-	if p.defaultAnimation != "" {
-		if p.isVisible {
-			p.Animate(p.defaultAnimation)
-		}
-	}
+	p.playDefaultAnim()
 }
+
 func (p *Sprite) InitFrom(src *Sprite) {
 	p.baseObj.initFrom(&src.baseObj)
 	p.eventSinks.initFrom(&src.eventSinks, p)
@@ -592,7 +590,9 @@ func lerp(a float64, b float64, progress float64) float64 {
 
 func (p *Sprite) goAnimate(name string, ani *aniConfig) {
 	if p.lastAnim != nil {
+		p.isWaitingStopAnim = true
 		p.lastAnim.Stop()
+		p.isWaitingStopAnim = false
 	}
 	var animwg sync.WaitGroup
 	animwg.Add(1)
@@ -715,12 +715,19 @@ func (p *Sprite) goAnimate(name string, ani *aniConfig) {
 			}
 		}
 	})
+	isNeedPlayDefault := false
 	an.SetOnStopingListener(func() {
 		if debugInstr {
 			log.Printf("stop anim [name %s id %d]  ", an.Name, an.Id)
 		}
 		animwg.Done()
 		p.lastAnim = nil
+		if !p.isWaitingStopAnim && name != p.defaultAnimation && p.isVisible {
+			dieAnimName := p.getStateAnimName(StateDie)
+			if name != dieAnimName {
+				isNeedPlayDefault = true
+			}
+		}
 	})
 
 	var h *tickHandler
@@ -731,6 +738,9 @@ func (p *Sprite) goAnimate(name string, ani *aniConfig) {
 		}
 	})
 	waitToDo(animwg.Wait)
+	if isNeedPlayDefault {
+		p.playDefaultAnim()
+	}
 }
 
 func (p *Sprite) Animate(name string) {
@@ -870,6 +880,17 @@ func (p *Sprite) Step__2(step float64, animname string) {
 	p.goMoveForward(step)
 }
 
+func (p *Sprite) playDefaultAnim() {
+	animName := p.defaultAnimation
+	if animName != "" && p.isVisible {
+		if ani, ok := p.animations[animName]; ok {
+			anicopy := *ani
+			anicopy.IsLoop = true
+			p.goAnimate(animName, &anicopy)
+		}
+	}
+}
+
 // Goto func:
 //
 //	Goto(sprite)

tutorial/07-Camera/Bullet.spx

@@ -0,0 +1,11 @@
+onCloned => {
+	setXYpos MyAircraft.xpos, MyAircraft.ypos+5
+	show
+	for {
+		wait 0.04
+		step 10
+		if touching(Edge) {
+			destroy
+		}
+	}
+}

tutorial/07-Camera/MyAircraft.spx

@@ -0,0 +1,17 @@
+import 	"math"
+onStart => {
+	setXYpos 0, 0
+	for {
+		wait 0.1
+		Bullet.clone
+	}
+}
+
+onStart => {
+	setXYpos 0, 0
+	Camera.setXYpos 0, 0
+	for {
+		wait 0.03
+		setXYpos mouseX, mouseY
+	}
+}

tutorial/07-Camera/assets/index.json

@@ -0,0 +1,15 @@
+{
+  "backdrops": [
+    {
+      "bitmapResolution": 2,
+      "name": "backdrop1",
+      "path": "1.png"
+    }
+  ],
+  "map": { "width": 240, "height": 240 },
+  "run": { "width": 720, "height": 720 },
+  "zorder": [
+    "MyAircraft",
+    "Bullet"
+  ]
+}

tutorial/07-Camera/assets/sprites/Bullet/index.json

@@ -0,0 +1,20 @@
+{
+  "costumes": [
+    {
+      "bitmapResolution": 2,
+      "name": "bullet",
+      "path": "30.png",
+      "faceRight": 90,
+      "x": 8,
+      "y": 20
+    }
+  ],
+  "costumeIndex": 0,
+  "heading": 0,
+  "isDraggable": false,
+  "rotationStyle": "normal",
+  "size": 0.65,
+  "visible": false,
+  "x": 230,
+  "y": 185
+}

tutorial/07-Camera/assets/sprites/MyAircraft/index.json

@@ -0,0 +1,19 @@
+{
+  "costumes": [
+    {
+      "bitmapResolution": 2,
+      "name": "hero",
+      "path": "8.png",
+      "x": 98,
+      "y": 122
+    }
+  ],
+  "costumeIndex": 0,
+  "heading": 90,
+  "isDraggable": false,
+  "rotationStyle": "normal",
+  "size": 0.45,
+  "visible": true,
+  "x": -131,
+  "y": -161
+}

tutorial/07-Camera/main.spx

@@ -0,0 +1,4 @@
+var (
+	MyAircraft MyAircraft
+	Bullet     Bullet
+)

tutorial/09-LoopAnim/SmallEnemy.spx

@@ -0,0 +1,6 @@
+onStart => {
+	setXYpos 0,0
+	show
+	wait 1
+	animate "die"
+}

tutorial/09-LoopAnim/assets/index.json

@@ -0,0 +1,13 @@
+{
+  "backdrops": [
+    {
+      "bitmapResolution": 2,
+      "name": "backdrop1",
+      "path": "1.png"
+    }
+  ],
+  "zorder": [
+    "Bullet",
+    "SmallEnemy"
+  ]
+}

tutorial/09-LoopAnim/assets/sounds/explode/index.json

@@ -0,0 +1,3 @@
+{
+  "path": "1.wav"
+}

tutorial/09-LoopAnim/assets/sprites/Bullet/index.json

@@ -0,0 +1,20 @@
+{
+  "costumes": [
+    {
+      "bitmapResolution": 2,
+      "name": "bullet",
+      "path": "30.png",
+      "faceRight": 90,
+      "x": 8,
+      "y": 20
+    }
+  ],
+  "costumeIndex": 0,
+  "heading": 0,
+  "isDraggable": false,
+  "rotationStyle": "normal",
+  "size": 0.65,
+  "visible": false,
+  "x": 230,
+  "y": 185
+}

tutorial/09-LoopAnim/assets/sprites/SmallEnemy/index.json

@@ -0,0 +1,56 @@
+{
+  "costumes": [
+    {
+      "bitmapResolution": 2,
+      "name": "normal",
+      "path": "32.png",
+      "x": 50,
+      "y": 36
+    },
+    {
+      "bitmapResolution": 2,
+      "name": "die-0",
+      "path": "33.png",
+      "x": 50,
+      "y": 36
+    },
+    {
+      "bitmapResolution": 2,
+      "name": "die-1",
+      "path": "34.png",
+      "x": 50,
+      "y": 44
+    },
+    {
+      "bitmapResolution": 2,
+      "name": "die-2",
+      "path": "35.png",
+      "x": 56,
+      "y": 50
+    },
+    {
+      "bitmapResolution": 2,
+      "name": "die-3",
+      "path": "36.png",
+      "x": 44,
+      "y": 38
+    }
+  ],
+  "costumeIndex": 0,
+  "fAnimations": {
+    "die": {
+      "duration": 0.2,
+      "from": "die-0",
+      "to": "die-3",
+      "isLoop": true
+    }
+  },
+  "defaultAnimation": "init",
+  "heading": 90,
+  "isDraggable": false,
+  "rotationStyle": "normal",
+  "size": 0.65,
+  "visible": false,
+  "x": -58,
+  "y": -179
+}

tutorial/09-LoopAnim/main.spx

@@ -0,0 +1,4 @@
+var (
+	explode Sound
+	Bullet     Bullet
+)

tutorial/10-PivotPoint/Calf.spx

@@ -0,0 +1,27 @@
+import 	"math"
+onStart => {
+	say "Hello Go+"
+	updateInterval := 0.03
+	timer := 0.0
+	setXYpos 0, 0
+	for timer < 3{
+		timer += updateInterval
+		wait updateInterval
+		setXYpos mouseX, mouseY
+	}
+	timer=0.0
+	for timer < 3{
+		timer += updateInterval
+		wait updateInterval
+		setHeading timer*60
+
+		sin, _ := math.Sincos(timer*90 * math.Pi / 180)
+		setSize(sin*0.5+1.5)
+	}
+	timer=0.0
+	for timer < 5{
+		timer += updateInterval
+		wait updateInterval
+		step 40*updateInterval
+	}
+}

tutorial/10-PivotPoint/assets/index.json

@@ -0,0 +1,9 @@
+{
+  "map": {
+    "width": 480,
+    "height": 360
+  },
+  "zorder": [
+    "Calf"
+  ]
+}

tutorial/10-PivotPoint/assets/sprites/Calf/index.json

@@ -0,0 +1,23 @@
+{
+  "costumes": [
+    {
+      "bitmapResolution": 2,
+      "name": "calf-0",
+      "path": "1.png",
+      "x": 55,
+      "y": 50
+    }
+  ],  
+  "pivot":{  
+    "x": 0,
+    "y": -25
+  },
+  "costumeIndex": 0,
+  "heading": 90,
+  "isDraggable": false,
+  "rotationStyle": "normal",
+  "size": 1,
+  "visible": true,
+  "x": -59,
+  "y": 2
+}

tutorial/11_MutilScene/Bullet.spx

@@ -0,0 +1,22 @@
+onTouched => {
+	destroy
+}
+
+onStart => {
+	for {
+		wait 0.3
+		clone
+	}
+}
+
+onCloned => {
+	setXYpos mouseX, mouseY
+	show
+	for {
+		wait 0.04
+		step 10
+		if touching(Edge) {
+			destroy
+		}
+	}
+}