Maintain state; add getBodyShape

Engine/src/shared/sprites.ts

@@ -1,5 +1,5 @@
 import assets from '../../../Assets/Sprites/**/*.yaml'
-import { Sprite } from '../data/sprite'
+import { Shape, Sprite, SpritePart } from '../data/sprite'
 import * as PIXI from 'pixi.js'
 
 export const sprites: Record<string, Sprite> = {}
@@ -10,26 +10,45 @@ for (let [key, value] of Object.entries(assets)) {
 
 export class SpriteInstance {
   container: PIXI.Container
+  sprite: Sprite
+  animation?: SpritePart
+  animationKey: string
+  set?: SpritePart
+  setKey: string
+  subset?: SpritePart
+  subsetKey: string
+  frame?: SpritePart
+  frameIndex: number
 
   constructor(ctor: string) {
     this.container = new PIXI.Container()
     let [spriteKey, animationKey, setKey, subsetKey, frameKey] = ctor.split('.')
-    let frameIndex = Number(frameKey)
-    let sprite = sprites[spriteKey]
-    if (!sprite) {
+    this.animationKey = animationKey
+    this.setKey = setKey
+    this.subsetKey = subsetKey
+    this.frameIndex = Number(frameKey)
+    this.sprite = sprites[spriteKey]
+    if (!this.sprite) {
       this.container.addChild(new PIXI.Text('missing sprite'))
       return
     }
-    let animation = sprite.root.children[animationKey]
-    let set = animation.children[setKey]
-    let subset = set.children[subsetKey]
+    this.animation = this.sprite.root.children[animationKey]
+    this.set = this.animation.children[setKey]
+    this.subset = this.set.children[subsetKey]
     //
-    if (subset.frames) {
-      let frame = subset.frames[frameIndex]
-      let s = new PIXI.Sprite(frame.texture)
-      s.x -= frame.originX
-      s.y -= frame.originY
+    if (this.subset.frames) {
+      this.frame = this.subset.frames[this.frameIndex]
+      let s = new PIXI.Sprite(this.frame.texture)
+      s.x -= this.frame.originX
+      s.y -= this.frame.originY
       this.container.addChild(s)
     }
   }
+
+  getBodyShape(): Shape|undefined {
+    if (this.frame && this.frame.shapes) {
+      return this.frame.shapes.find(v=>v.key==='body')
+    }
+    return
+  }
 }