ChessBuilder/Systems/Cards/Supernova.gd

class_name SupernovaCard extends Card

const CAPTURE_RADIUS = 4
var valid = false;

func _init():
    super._init()
    cardName = "Supernova"
    rank = Rank.RANK_0
    effectType = EffectType.PIECE_EFFECT
    duration = 5
    description = "All enemy units within 4 radius are captured"
    unitWhitelist = ["King"]
    remaining_turns = duration

func apply_effect(target_piece = null, board_flow = null, game_state = null):
    attached_piece = target_piece
    if !target_piece or !board_flow or !game_state:
        print(cardName, " missing input param ")
        return false
    setup_persistent_effect(game_state)
    # dont apply on card attachment
    if !valid:
        return true
    # Get king's position
    var king_pos = target_piece.get_parent().name.split("-")
    var king_x = int(king_pos[0])
    var king_y = int(king_pos[1])
    
    # Collect all tiles within radius to check
    var tiles_to_check = []
    
    # Check in all directions (up, down, left, right and diagonals)
    for dx in range(-CAPTURE_RADIUS, CAPTURE_RADIUS + 1):
        for dy in range(-CAPTURE_RADIUS, CAPTURE_RADIUS + 1):
            # Skip if outside Manhattan distance
            if abs(dx) + abs(dy) > CAPTURE_RADIUS:
                continue
                
            # Calculate target coordinates
            var target_x = king_x + dx
            var target_y = king_y + dy
            
            # Skip if outside board bounds
            if target_x < 0 or target_x >= 8 or target_y < 0 or target_y >= 8:
                continue
                
            # Skip king's own position
            if dx == 0 and dy == 0:
                continue
                
            # Add tile to check list
            tiles_to_check.append(str(target_x) + "-" + str(target_y))
    
    # Process tiles and add overlay
    for tile_name in tiles_to_check:
        var tile = board_flow.get_node(tile_name)
        
        var existing_overlay = tile.get_node_or_null("SupernovaOverlay")
        if existing_overlay:
            existing_overlay.queue_free()
        
        var overlay = ColorRect.new()
        overlay.name = "SupernovaOverlay"
        overlay.color = Color(1, 0, 0, 0.3)
        overlay.size = tile.size
        overlay.mouse_filter = Control.MOUSE_FILTER_IGNORE
        tile.add_child(overlay)
        overlay.show()
        
        if tile.get_child_count() > 1:  # > 1 because we just added the overlay
            var piece = tile.get_child(0)  
            if piece.Item_Color != target_piece.Item_Color:
                game_state.updatePoints(piece)
                piece.queue_free()
    
    # Setup timer to remove overlays
    var timer = Timer.new()
    board_flow.add_child(timer)
    timer.wait_time = 0.5
    timer.one_shot = true
    timer.timeout.connect(func(): 
        for tile_name in tiles_to_check:
            var tile = board_flow.get_node(tile_name)
            var overlay = tile.get_node_or_null("SupernovaOverlay")
            if overlay:
                overlay.queue_free()
        timer.queue_free()
    )
    timer.start()
    
    return true


func setup_persistent_effect(game_state):
    # Connect to the turn change signal if not already connected
    if !game_state.is_connected("turn_changed", Callable(self, "on_turn_changed")):
        game_state.connect("turn_changed", Callable(self, "on_turn_changed"))
    
func on_turn_changed():
    
    if attached_piece.get_parent().get_parent().owner.isPlayerTurn() and attached_piece and remaining_turns > 0:
        # print(attached_piece.get_parent().get_parent(), attached_piece.get_parent().get_parent().owner)
        var piece = attached_piece
        var flow = attached_piece.get_parent().get_parent()
        var state = attached_piece.get_parent().get_parent().owner
        
        # print("Debug values:")
        # print("- Piece: ", piece, " is null? ", piece == null)
        # print("- Board Flow: ", flow, " is null? ", flow == null)
        # print("- Game State: ", state, " is null? ", state == null)
        
        # Now try apply_effect with these values
        valid = true
        apply_effect(piece, flow, state)

func remove_effect():
    if attached_piece:
        var game_state = attached_piece.get_parent().get_parent().owner
        if game_state.is_connected("turn_changed", Callable(self, "on_turn_changed")):
            game_state.disconnect("turn_changed", Callable(self, "on_turn_changed"))
    super.remove_effect()

func update_visual_effect(king, board_flow):
    # Could be extended with visual feedback like particles or highlighting
    var radius_tiles = []
    var king_pos = king.get_parent().name.split("-")
    var king_x = int(king_pos[0])
    var king_y = int(king_pos[1])
    
    for x in range(max(0, king_x - CAPTURE_RADIUS), min(8, king_x + CAPTURE_RADIUS + 1)):
        for y in range(max(0, king_y - CAPTURE_RADIUS), min(8, king_y + CAPTURE_RADIUS + 1)):
            if abs(x - king_x) + abs(y - king_y) <= CAPTURE_RADIUS:
                var tile_name = str(x) + "-" + str(y)
                radius_tiles.append(board_flow.get_node(tile_name))
    
    # Highlight affected tiles briefly
    for tile in radius_tiles:
        var style = StyleBoxFlat.new()
        style.bg_color = Color(1, 0, 0, 0.3)  # Red tint
        tile.add_theme_stylebox_override("normal", style)
        
        # Remove highlight after a short delay
        var timer = Timer.new()
        board_flow.add_child(timer)
        timer.wait_time = 0.5
        timer.one_shot = true
        timer.timeout.connect(func(): 
            tile.remove_theme_stylebox_override("normal")
            timer.queue_free()
        )
        timer.start()