// Renders a frame if it is not null
void TryRenderFrame(VisualStageObject visualStage)
{
if (visualStage != null)
{
RenderFrame(visualStage);
}
}
// Update step info of the visual stage
void UpdateInformationFrame(VisualStageObject visualStage)
{
String stepInfo = visualStage.stageInfo;
var stepInfoText = InforScreen.GetComponentInChildren <Text>();
stepInfoText.text = string.IsNullOrEmpty(stepInfo) ?
"No Step Informattion available" :
stepInfo;
}
// Renders a frame (stage), all visible objects will be drawn on the screen in this process
void RenderFrame(VisualStageObject visualStage)
{
//Get subgoal info
var stageIndex = visualSolution.GetCurrentStageIndex();
var subgoalNames = visualSolution.GetSubgoalNames(stageIndex);
var subgoalObjectNames = visualSolution.GetSubgoalObjectNames(stageIndex);
// Render step info of current stage
UpdateInformationFrame(visualStage);
// Highlight stage object for rendering
UpdateStepPanelUI(stageIndex);
// Update subgoal UI
UpdateSubgoalUI(subgoalNames);
// Update visual sprites.
// Including create, update, remove visual sprites and manage subgoal status
UpdateVisualSprites(visualStage, subgoalObjectNames);
}
// Update visual sprites game object and manage subgoal status
void UpdateVisualSprites(VisualStageObject visualStage, string[] subgoalObjectNames)
{
//Render all visual sprite objects of current visual stage
foreach (var visualSprite in visualStage.visualSprites)
{
//Check existin
if (spritePool.ContainsKey(visualSprite.name))
{
var sprite = spritePool[visualSprite.name];
var controller = sprite.GetComponent <SpriteController>();
controller.UpdateState(visualSprite);
}
//Create a new sprite if it does not exist
else
{
GameObject sprite;
var imageKey = visualSprite.prefabimage;
var imageString = visualSolution.FetchImageString(imageKey);
sprite = imageString != null
// Render custom prefab image
? UIVisualSpriteFactory.CreateCustom(imageString)
// Render built-in prefab
: UIVisualSpriteFactory.CreateBuiltIn(visualSprite.prefabimage);
// Set parent relationship
sprite.transform.SetParent(AniFrame.transform, false);
// Store in sprite pool
spritePool.Add(visualSprite.name, sprite);
// Initialise sprite controller and start presenting the object
var controller = sprite.GetComponent <SpriteController>();
controller.Init(visualSprite);
controller.Present();
}
}
//Remove stored sprites if they are not longer existing
if (spritePool.Count > visualStage.visualSprites.Length)
{
var existingSpriteKeys = from i in visualStage.visualSprites
select i.name;
var temps = new List <string>();
foreach (var spriteKey in spritePool.Keys)
{
if (!existingSpriteKeys.Contains(spriteKey))
{
temps.Add(spriteKey);
}
}
foreach (var temp in temps)
{
var sprite = spritePool[temp];
var controller = sprite.GetComponent <SpriteController>();
controller.OnDestory += (sender, e) =>
{
foreach (Transform child in sprite.transform)
{
Destroy(child.gameObject);
}
Destroy(sprite);
spritePool.Remove(temp);
};
controller.DisapperAndDestory();
}
}
// Set subgoals
foreach (var sprite in spritePool)
{
var controller = sprite.Value.GetComponent <SpriteController>();
var flag = subgoalObjectNames.Contains(sprite.Key);
controller.SetSubgoal(flag);
}
}