private TurnActionComponent SafeGetAction(DynValue value, string excMsgHeader)
{
if (value.Type == DataType.UserData)
{
Mods.Lua.TurnActionComponent luaComp = value.UserData.Object as Mods.Lua.TurnActionComponent;
if (luaComp != null)
{
return(TranslateTurnActionComp(luaComp, excMsgHeader));
}
else
{
throw new BadActionException(excMsgHeader + " UserData cannot be coerced into TurnActionComponent");
}
}
else
{
throw new BadActionException(excMsgHeader + " Expected UserData type");
}
}
private TurnActionComponent TranslateTurnActionComp(Mods.Lua.TurnActionComponent luaComp, string excMsgHeader)
{
TurnActionComponent logicComp = new TurnActionComponent();
switch (luaComp.Type.ToUpperInvariant())
{
case "MOVE":
logicComp.type = TurnActionComponentType.MovePiece;
logicComp.actor = ToBoardPosition(luaComp.ActorX, luaComp.ActorY, excMsgHeader, "start");
logicComp.target = ToBoardPosition(luaComp.TargetX, luaComp.TargetY, excMsgHeader, "target");
if (logicComp.actor == logicComp.target)
{
throw new BadActionException(excMsgHeader + " Start and target positions are equal");
}
return(logicComp);
case "CAPTURE":
logicComp.type = TurnActionComponentType.CapturePiece;
logicComp.target = ToBoardPosition(luaComp.TargetX, luaComp.TargetY, excMsgHeader, "target");
return(logicComp);
case "PROMOTION":
case "PROMOTE":
logicComp.type = TurnActionComponentType.PromotePiece;
logicComp.actor = ToBoardPosition(luaComp.ActorX, luaComp.ActorY, excMsgHeader, "promoted");
logicComp.promotionIndex = db.PieceNameToIndex(luaComp.PromotionPiece);
if (logicComp.promotionIndex < 0)
{
throw new BadActionException(excMsgHeader + " Nonexistent piece given for promotion");
}
return(logicComp);
default:
throw new BadActionException(string.Format("{0} Invalid action type \"{1}\"", excMsgHeader, luaComp.Type));
}
}
