ChessBuilder/Systems/StateMachine/GameStates/Movement.gd

extends "res://Systems/StateMachine/ChessGameState.gd"


func _ready() -> void:
    print("Movement state ready")

func enter(_previous: String, _data := {}) -> void:
    print("ENTERING STATE ", Constants.MOVEMENT)
    if !game.boardContainer.is_connected("tile_pressed", handleMovement):
        print("Connecting tile_pressed signal")
        game.boardContainer.connect("tile_pressed", handleMovement)
    game.resetHighlights()
    if game.selectedNode != "":
        game.getMovableAreas()

func exit() -> void:
   if game.boardContainer.is_connected("tile_pressed", handleMovement):
       game.boardContainer.disconnect("tile_pressed", handleMovement)

func handleMovement(location: String) -> void:
    print("HANDLING MOVEMENT ", location)
    var node = game.get_node("Flow/" + location)
    if game.selectedNode == "":
        if node.get_child_count() != 0 && node.get_child(0).Item_Color == game.Turn:
            game.selectedNode = location
            game.getMovableAreas()
    elif game.selectedNode == location:
        game.clearSelection()
    elif isCastlingMove(node, location):
        handleCastling(node)
        finished.emit(Constants.POST_MOVE)
    # En Passant
    elif isEnPassantMove(node, location):
        handleEnPassant(node)
    # Reselect piece
    elif isReselectMove(node):
        game.selectedNode = location
        game.getMovableAreas()
    # Capture piece
    elif isCaptureMove(node):
        handleCapture(node)
        finished.emit(Constants.POST_MOVE)
    # Regular move
    elif isRegularMove(node):
        handleRegularMove(node)
        finished.emit(Constants.POST_MOVE)
    else:
        if game.isValidMove(location):
            executeMove(location)
            finished.emit(Constants.POST_MOVE)


           

func isCastlingMove(node: Node, location: String) -> bool:
    return game.selectedNode != "" && node.get_child_count() != 0 && node.get_child(0).Item_Color == game.Turn && node.get_child(0).name == "Rook"

func isEnPassantMove(node: Node, location: String) -> bool:
    return game.selectedNode != "" && node.get_child_count() != 0 && node.get_child(0).Item_Color != game.Turn && \
           node.get_child(0).name == "Pawn" && game.specialArea.size() != 0 && game.specialArea[0] == node.name && \
           node.get_child(0).get("En_Passant") == true

func isReselectMove(node: Node) -> bool:
    return game.selectedNode != "" && node.get_child_count() != 0 && node.get_child(0).Item_Color == game.Turn

func isCaptureMove(node: Node) -> bool:
    return game.selectedNode != "" && node.get_child_count() != 0 && node.get_child(0).Item_Color != game.Turn

func isRegularMove(node: Node) -> bool:
    return game.selectedNode != "" && node.get_child_count() == 0

func handleCastling(node: Node) -> void:
    print("handleCastling")
    for i in game.areas:
        if i == node.name:
            var king = game.get_node("Flow/" + game.selectedNode).get_child(0)
            var rook = node.get_child(0)
            king.reparent(game.get_node("Flow/" + game.specialArea[1]))
            rook.reparent(game.get_node("Flow/" + game.specialArea[0]))
            king.position = Vector2(25, 25)
            rook.position = Vector2(25, 25)
            game.currentlyMovingPiece = king
            game.resolveMoveEffects()

func handleEnPassant(node: Node) -> void:
    print("handleEnPassant")
    for i in game.specialArea:
        if i == node.name:
            var pawn = game.get_node("Flow/" + game.selectedNode).get_child(0)
            node.get_child(0).free()
            pawn.reparent(game.get_node("Flow/" + game.specialArea[1]))
            pawn.position = Vector2(25, 25)
            game.currentlyMovingPiece = pawn
            game.resolveMoveEffects()

func handleCapture(node: Node) -> void:
    print("handleCapture")
    for i in game.areas:
        if i == node.name:
            var piece = game.get_node("Flow/" + game.selectedNode).get_child(0)
            var capturedPiece = node.get_child(0)
            
            game.updatePoints(capturedPiece)
            
            if capturedPiece.name == "King":
                print("Game Over!")
                game.gamecheckMate = true
            capturedPiece.free()
            piece.reparent(node)
            piece.position = Vector2(25, 25)
            piece.position = Vector2(25, 25)
            game.currentlyMovingPiece = piece
            game.resolveMoveEffects()

func handleRegularMove(node: Node) -> void:
    print("handleRegularMove", node)
    for i in game.areas:
        if i == node.name:
            var piece = game.get_node("Flow/" + game.selectedNode).get_child(0)
            piece.reparent(node)
            piece.position = Vector2(25, 25)
            game.currentlyMovingPiece = piece
            game.resolveMoveEffects()




func executeMove(targetLocation: String) -> void:
    print("executeMove ", targetLocation)
    var targetNode = game.get_node("Flow/" + game.targetLocation)
    var piece = game.get_node("Flow/" + game.selectedNode).get_child(0)
    # print("piece", piece)
    
    if targetNode.get_child_count() != 0:
        var capturedPiece = targetNode.get_child(0)
        if game.Turn == 0:
            game.p1Points += capturedPiece.Points
            game.p1String.text = str(game.p1Points)
        else:
            game.p2Points += capturedPiece.Points
            game.p2String.text = str(game.p2Points)
        capturedPiece.free()
        
    piece.reparent(targetNode)
    piece.position = Vector2(25, 25)
    # print("piece2", piece)
    game.hasMoved = true
    game.currentlyMovingPiece = piece
    game.resetHighlights()