sight

permet à un objet de repérer d'autres objet

How to use

parameters

Parameter	Default Value	Type	Description
sight		number	600
raycast		boolean	true
tag		string	"collectible"
pos		vec2	vec2(0, 0)

example

sight({
  sight: 600,
  raycast: true,
  tag: "collectible",
  pos: vec2(0, 0)
}),

Source

component.js

function sight(p) {
  const param = {
    sight: 600,
    raycast: true,
    tag: "collectible",
    pos: vec2(0, 0),
    ...p,
  }
  return {
    id: "sight",
    getClosestTarget(pr) {
      const targetParam = { ...param, ...pr }
      const targets = get(targetParam.tag, { recursive: true })
      const raycastCheck = (target) => {
        this.area.scale = vec2(0, 0)
        const r = this.getLevel().raycast(this.pos.add(targetParam.pos), target.pos.sub(this.pos))
        if (debug.inspect) drawLine({ p1: this.pos.add(targetParam.pos), p2: target.pos, width: 4, color: rgb(0, 0, 255), });
        this.area.scale = vec2(1, 1)
        return (r != undefined && r.object && r.object.id == target.id)
      }
      let closestTarget, lastDistance
      for (const target of targets) {
        const distance = this.pos.dist(target.pos)
        const raycast = (targetParam.raycast) ? raycastCheck(target) : true
        const inreach = (distance < targetParam.sight)
        const closest = (lastDistance == null || lastDistance > distance)
        const notself = target != this
        const areaOn = !target.collisionIgnore.includes("*")
        if (notself && raycast && inreach && closest && areaOn) {
          lastDistance = distance
          closestTarget = target
        }
      }
      return closestTarget
    },
  }
}