private Trigger ParseTrigger(XElement triggerNode)
{
try
{
string conditionString;
if (triggerNode.Attribute("condition") != null)
{
conditionString = triggerNode.RequireAttribute("condition").Value;
}
else
{
conditionString = triggerNode.Element("Condition").Value;
}
Condition condition = EffectParser.ParseCondition(conditionString);
Effect effect = EffectParser.LoadTriggerEffect(triggerNode.Element("Effect"));
return(new Trigger {
Condition = condition, Effect = effect
});
}
catch (Exception e)
{
throw new GameXmlException(triggerNode, "There was an error parsing a trigger. There may be a syntax error in your condition expression.\n\nThe error message was:\n\n\t" + e.Message);
}
}
private void EffectCommand(SceneEffectCommandInfo command)
{
var entity = Entities.GetEntityById(command.EntityId);
var effect = EffectParser.GetOrLoadEffect(command.GeneratedName, command.EffectNode);
effect(entity);
}
private void LoadFile(string path, List <string> pathArgs = null)
{
var projectLoader = new GameLoader();
this.FileReaderProvider = projectLoader.Load(path);
project = FileReaderProvider.GetProjectReader().Load();
BasePath = project.BaseDir;
PixelsDown = project.ScreenHeight;
PixelsAcross = project.ScreenWidth;
if (ScreenSizeChanged != null)
{
ScreenSizeChangedEventArgs args = new ScreenSizeChangedEventArgs(PixelsAcross, PixelsDown);
ScreenSizeChanged(this, args);
}
if (project.MusicNSF != null)
{
Engine.Instance.SoundSystem.LoadMusicNSF(project.MusicNSF.Absolute);
}
if (project.EffectsNSF != null)
{
Engine.Instance.SoundSystem.LoadSfxNSF(project.EffectsNSF.Absolute);
}
foreach (var stageInfo in project.Stages)
{
stageFactory.Load(stageInfo);
}
_tileProperties.LoadProperties(project.EntityProperties);
_entitySource.LoadEntities(project.Entities);
EffectParser.LoadEffectsList(project.Functions);
Engine.Instance.SoundSystem.LoadEffectsFromInfo(project.Sounds);
Scene.LoadScenes(project.Scenes);
Menu.LoadMenus(project.Menus);
FontSystem.Load(project.Fonts);
PaletteSystem.LoadPalettes(project.Palettes);
currentPath = path;
if (pathArgs != null && pathArgs.Any())
{
ProcessCommandLineArgs(pathArgs);
}
else if (project.StartHandler != null)
{
_stateMachine.ProcessHandler(project.StartHandler);
}
else
{
throw new GameRunException("The game file loaded correctly, but it failed to specify a starting point!");
}
Player = new Player();
}
private void CallCommand(SceneCallCommandInfo command)
{
var player = Entities.GetEntityById("Player");
if (player != null)
{
EffectParser.GetLateBoundEffect(command.Name)(player);
}
}
private void ConditionCommand(SceneConditionCommandInfo command)
{
var condition = EffectParser.ParseCondition(command.ConditionExpression);
var entity = Entities.GetAll().FirstOrDefault(e => e.Name == command.ConditionEntity);
if (condition(entity))
{
RunCommands(command.Commands);
}
}
public static void LoadEffectsList(XElement element)
{
foreach (var effectnode in element.Elements("Function"))
{
string name = effectnode.RequireAttribute("name").Value;
Effect effect = LoadEffect(effectnode);
EffectParser.SaveEffect(name, effect);
}
}
public static Effect LoadTriggerEffect(XElement effectnode)
{
Effect effect = LoadEffect(effectnode);
// check for name to save
XAttribute nameAttr = effectnode.Attribute("name");
if (nameAttr != null)
{
EffectParser.SaveEffect(nameAttr.Value, effect);
}
return(effect);
}
public void Unload()
{
Engine.Instance.Stop();
_stateMachine.StopAllHandlers();
_entitySource.Unload();
Engine.Instance.UnloadAudio();
FontSystem.Unload();
HealthMeter.Unload();
Scene.Unload();
Menu.Unload();
PaletteSystem.Unload();
EffectParser.Unload();
CurrentGame = null;
}
private Trigger ParseTrigger(TriggerInfo info)
{
try
{
var condition = EffectParser.ParseCondition(info.Condition);
var effect = EffectParser.LoadTriggerEffect(info.Effect);
var elseEffect = (info.Else != null) ? EffectParser.LoadTriggerEffect(info.Else) : null;
return(new Trigger {
Condition = condition, Effect = effect, Else = elseEffect, ConditionString = info.Condition, Priority = info.Priority ?? 0
});
}
catch (Exception e)
{
throw new GameRunException("There was an error parsing a trigger. There may be a syntax error in your condition expression.\n\nThe error message was:\n\n\t" + e.Message);
}
}
internal void LoadInfo(StateComponentInfo componentInfo)
{
foreach (var stateInfo in componentInfo.States)
{
var state = new State()
{
Name = stateInfo.Name
};
foreach (var trigger in stateInfo.Triggers)
{
state.AddTrigger(ParseTrigger(trigger));
}
state.SetInitial(EffectParser.LoadTriggerEffect(stateInfo.Initializer));
state.SetLogic(EffectParser.LoadTriggerEffect(stateInfo.Logic));
states[state.Name] = state;
}
foreach (var triggerInfo in componentInfo.Triggers)
{
var trigger = ParseTrigger(triggerInfo.Trigger);
if (triggerInfo.States != null)
{
foreach (var stateName in triggerInfo.States)
{
if (!states.ContainsKey(stateName))
{
State state = new State {
Name = stateName
};
states.Add(stateName, state);
}
states[stateName].AddTrigger(trigger);
}
}
else
{
foreach (var state in states.Values)
{
state.AddTrigger(trigger);
}
}
}
}
public override void LoadXml(XElement stateNode)
{
string name = stateNode.RequireAttribute("name").Value;
State state;
if (states.ContainsKey(name))
{
state = states[name];
}
else
{
state = new State {
Name = name
};
states[name] = state;
}
foreach (XElement child in stateNode.Elements())
{
switch (child.Name.LocalName)
{
case "Trigger":
state.AddTrigger(ParseTrigger(child));
break;
default:
// make sure the entity has the component we're dealing with
// if it's not a component name it will just return null safely
Parent.GetOrCreateComponent(child.Name.LocalName);
if (child.Attribute("mode") != null && child.RequireAttribute("mode").Value.ToUpper() == "REPEAT")
{
state.AddLogic(EffectParser.LoadEffectAction(child));
}
else
{
state.AddInitial(EffectParser.LoadEffectAction(child));
}
break;
}
}
}
private void IncludeXmlFile(string path)
{
try
{
XDocument document = XDocument.Load(path, LoadOptions.SetLineInfo);
foreach (XElement element in document.Elements())
{
switch (element.Name.LocalName)
{
case "Entities":
_entitySource.LoadEntities(element);
_tileProperties.LoadProperties(element);
break;
case "Functions":
EffectParser.LoadEffectsList(element);
break;
case "Sounds":
case "Scenes":
case "Scene":
case "Menus":
case "Menu":
case "Fonts":
case "Palettes":
break;
default:
throw new GameXmlException(element, string.Format("Unrecognized XML type: \"{0}\"", element.Name.LocalName));
}
}
}
catch (GameXmlException ex)
{
ex.File = path;
throw;
}
}
protected override void Update()
{
if (!CanMove || Parent.Paused)
{
return;
}
float accelX = (pendingVx - vx) * dragX;
vx += accelX;
float accelY = (pendingVy - vy) * dragY;
vy += accelY;
if (!Floating)
{
float gmult = (overTile != null) ? overTile.Properties.GravityMult : 1;
if (Parent.Container.IsGravityFlipped)
{
vy -= Parent.Container.Gravity * gmult;
if (vy < -Const.TerminalVel)
{
vy = -Const.TerminalVel;
}
}
else
{
vy += Parent.Container.Gravity * gmult;
if (vy > Const.TerminalVel)
{
vy = Const.TerminalVel;
}
}
}
if (FlipSprite)
{
SpriteComponent sprite = Parent.GetComponent <SpriteComponent>();
if (sprite != null)
{
sprite.HorizontalFlip = (Direction == Direction.Left);
}
}
Tile nextOverTile = null;
if (position != null)
{
float deltaX = vx + pushX;
float deltaY = vy + pushY;
PointF pos = position.Position;
if (collision == null)
{
pos.X += deltaX;
pos.Y += deltaY;
}
else
{
if ((!collision.BlockLeft && deltaX < 0) || (!collision.BlockRight && deltaX > 0))
{
pos.X += deltaX;
}
if ((!collision.BlockTop && deltaY < 0) || (!collision.BlockBottom && deltaY > 0))
{
pos.Y += deltaY;
}
}
position.SetPosition(pos);
nextOverTile = Parent.Screen.TileAt(position.Position.X, position.Position.Y);
}
if (Parent.Name == "Player")
{
if (overTile != null && nextOverTile != null && nextOverTile.Properties.Name != overTile.Properties.Name)
{
if (overTile.Properties.OnLeave != null)
{
EffectParser.GetLateBoundEffect(overTile.Properties.OnLeave)(Parent);
}
if (nextOverTile.Properties.OnEnter != null)
{
EffectParser.GetLateBoundEffect(nextOverTile.Properties.OnEnter)(Parent);
}
}
if (nextOverTile != null && nextOverTile.Properties.OnOver != null)
{
EffectParser.GetLateBoundEffect(nextOverTile.Properties.OnOver)(Parent);
}
}
vx *= resistX;
vy *= resistY;
resistX = resistY = 1;
pendingVx = vx;
pendingVy = vy;
overTile = nextOverTile;
pushX = pushY = 0;
dragX = dragY = 1;
}
