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package sims.test.gui
import processing.core.PApplet
import scala.collection.mutable.ArrayBuffer
import sims.math._
import sims.test.gui.scenes._
import sims.test.gui.RichShape._
import sims.test.gui.RichJoint._
class SceneManager(implicit top: PApplet) {
/* Contains objects that will be rendered on `draw()`. */
private var _graphicals = new ArrayBuffer[Graphical[_]]
def graphicals: Seq[Graphical[_]] = _graphicals
/* Current scene. */
private var _currentScene: Scene = EmptyScene
/* Get current scene. */
def currentScene = _currentScene
/* Set current scene. */
def currentScene_=(newScene: Scene) = {
// remove reactions
currentScene.deafTo(currentScene.world)
currentScene.reactions.clear()
// empty world
currentScene.world.clear()
// clear graphical objects
_graphicals.clear()
// custom exit behavior
currentScene.exit()
// add new reactions to create / remove graphical objects
newScene.listenTo(newScene.world)
newScene.reactions += {
case BodyAdded(newScene.world, body) => for (s <- body.shapes) _graphicals += s.toGraphical
case BodyRemoved(newScene.world, body) => for (s <- body.shapes) {
val index = _graphicals.findIndexOf((g: Graphical[_]) => g match {
case gs: GraphicalShape => gs.physical == s
case _ => false
})
_graphicals.remove(index)
}
case JointAdded(newScene.world, joint) => _graphicals += joint.toGraphical
case JointRemoved(newScene.world, joint) => {
val index = _graphicals.findIndexOf((g: Graphical[_]) => g match {
case gj: GraphicalJoint => gj.physical == joint
case _ => false
})
_graphicals.remove(index)
}
}
// custom initialization
newScene.init()
// set current scene
_currentScene = newScene
println("set scene to '" + currentScene.name + "'")
}
private var currentSceneIndex = 0
val scenes = List(
BasicScene,
CollisionScene,
LongCollisionScene,
CloudScene,
PyramidScene,
ShiftedStackScene,
JointScene
)
def nextScene() = {
currentSceneIndex += 1
currentScene = scenes(mod(currentSceneIndex, scenes.length))
}
def previousScene() = {
currentSceneIndex -= 1
currentScene = scenes(mod(currentSceneIndex, scenes.length))
}
def restartScene() = {
currentScene = currentScene
}
}
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