jmonkey-test/src/main/scala/wow/doge/mygame/game/controls/CameraMovementControls.scala

package wow.doge.mygame.game.controls

import com.jme3.math.Quaternion
import com.jme3.scene.Node
import com.jme3.scene.control.AbstractControl
import com.jme3.renderer.RenderManager
import com.jme3.renderer.ViewPort
import monix.reactive.Observable
import wow.doge.mygame.game.subsystems.input.PlayerCameraInput
import com.jme3.scene.Spatial
import monix.{eval => me}
import com.jme3.math.FastMath
import com.jme3.math.Vector3f
import monix.execution.Cancelable
import monix.execution.Scheduler

class CameraMovementControl(
    rotationBuf: Quaternion,
    obs: Observable[PlayerCameraInput],
    rotateFn: Quaternion => Unit
)(implicit s: Scheduler)
    extends AbstractControl {
  private var _event: PlayerCameraInput = null
  private var _subscriptionToken: Cancelable = null

  override def controlUpdate(tpf: Float): Unit =
    if (_event != null)
      _event match {
        case PlayerCameraInput.CameraRotateLeft =>
          val rot = rotationBuf
            .fromAngleAxis(1 * FastMath.DEG_TO_RAD, Vector3f.UNIT_Y)
          rotateFn(rot)
        case PlayerCameraInput.CameraRotateRight =>
          val rot = rotationBuf
            .fromAngleAxis(-1 * FastMath.DEG_TO_RAD, Vector3f.UNIT_Y)
          rotateFn(rot)
        case PlayerCameraInput.CameraRotateUp =>
          val rot = rotationBuf
            .fromAngleAxis(-1 * FastMath.DEG_TO_RAD, Vector3f.UNIT_X)
          rotateFn(rot)
        case PlayerCameraInput.CameraRotateDown =>
          val rot = rotationBuf
            .fromAngleAxis(1 * FastMath.DEG_TO_RAD, Vector3f.UNIT_X)
          rotateFn(rot)
      }

  override def controlRender(
      x$1: RenderManager,
      x$2: ViewPort
  ): Unit = {}
  override def setSpatial(spatial: Spatial): Unit = {
    super.setSpatial(spatial)
    if (this.spatial != null)
      _subscriptionToken =
        obs.doOnNext(event => me.Task { _event = event }).subscribe()
    else {
      _subscriptionToken.cancel()
      _subscriptionToken = null
    }
  }

}

class FollowControl(playerNode: Node) extends AbstractControl {
  override def controlUpdate(tpf: Float): Unit =
    this.spatial.setLocalTranslation(playerNode.getLocalTranslation())
  override def controlRender(
      rm: RenderManager,
      vp: ViewPort
  ): Unit = {}
}