(Costume-group) Animation issues

[nighca]

Project: animation.zip

For sprite Fighter:

Config:

{
  "fAnimations": {
    "fight": {
      "from": "__animation_fight_attack_1-1",
      "to": "__animation_fight_attack_1-4",
      "duration": 0.4,
      "anitype": 0
    },
    "dying": {
      "from": "__animation_dying_dead-1",
      "to": "__animation_dying_dead-3",
      "duration": 0.6,
      "anitype": 0
    },
    "walk": {
      "from": "__animation_walk_walk-1",
      "to": "__animation_walk_walk-8",
      "duration": 0.8,
      "anitype": 0
    },
    "default": {
      "from": "__animation_default_idle-1",
      "to": "__animation_default_idle-6",
      "duration": 0.6,
      "anitype": 0
    }
  },
  "defaultAnimation": "default",
  "animBindings": {
    "die": "dying",
    "step": "walk"
  }
}

Code:

onKey KeyUp, => {
    say "animate fight", 0.3
    animate "fight"
}

onKey KeyDown, => {
    say "die", 0.3
    die
}

onKey KeyLeft, => {
    say "step left"
    setRotationStyle LeftRight
    turnTo Left
    step 50
}

onKey KeyRight, => {
    say "step right"
    setRotationStyle LeftRight
    turnTo Right
    step 50
}

There are some issues:

1. The animation default (which is bound as defaultAnimation) is played only once while sprite in default state. It is expecetd to be played repeatedly (see details in https://github.com/goplus/builder/issues/603#issuecomment-2180367864)
2. After animation fight (played by calling animate "fight") finished playing, the sprite does not return to the default state, while it keeps the last csotume of animation fight

3. If we call step 50, it is expected to play animation walk (which is bound to state step). However, the sprite plays fight, and then die, and then walk, and then panic:

   panic: invalid costume index [recovered]
       panic: invalid costume index

[nighca]

4. To make it possible to bind one animation to multiple states at the same time, we should put all animations in one place, e.g., fAnimations.

[nighca]

Now in builder, all the animations are frame animations, based on https://github.com/goplus/spx/pull/303 we do configure like this:

• Set frameFrom & frameTo to specify frames, do not set from & to

• Set duration to a fixed value (whatever the project or sprite or animation is), which corresponds to the time cost for sprite to move distance 1

  P.S. For animations bound to state turn, duration corresponds to the time cost for sprite to turn by 1 degree. For now we do not support state turn in Builder.

• Set frameFps to control the speed of frame animation, do not set fps

• Do not set anitype

[nighca]

fixed by #303