45 lines
2.7 KiB
GDScript
45 lines
2.7 KiB
GDScript
tool
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extends Control
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const grid_colour = Color.brown
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const highlight_colour = Color.gold #fuchsia
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# Number of rows to break the spritesheet into
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export var total_num_rows:int
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# Number of columns to break the spritesheet into
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export var total_num_columns:int
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# First animation cell. Boxes will be drawn around every cell from the start_cell to end_cell.
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export var start_cell:int
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# Last animation cell. Boxes will be drawn around every cell from the start_cell to end_cell.
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export var end_cell:int
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# The size of each animation cell in pixels.
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export var cell_size:Vector2
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# Zoom factor
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export var zoom_factor:float
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# This function will calculate where on the spritesheet the start and end frames for an animation
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# are, and draw boxes around all used frames. The visual indicator makes frame selection easier.
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func _draw() -> void:
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if start_cell > 0:
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# Draw grid for all frames in the spritesheet
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for yloop in range(total_num_rows):
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for xloop in range(total_num_columns):
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var corner1 = Vector2(xloop * cell_size.x, yloop * cell_size.y)
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var corner2 = Vector2(corner1.x + cell_size.x, corner1.y + cell_size.y)
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draw_line(Vector2(corner1.x * zoom_factor, corner1.y * zoom_factor), Vector2(corner2.x * zoom_factor, corner1.y * zoom_factor), grid_colour, 2.0, false)
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draw_line(Vector2(corner1.x * zoom_factor, corner1.y * zoom_factor), Vector2(corner1.x * zoom_factor, corner2.y * zoom_factor), grid_colour, 2.0, false)
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draw_line(Vector2(corner1.x * zoom_factor, corner2.y * zoom_factor), Vector2(corner2.x * zoom_factor, corner2.y * zoom_factor), grid_colour, 2.0, false)
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draw_line(Vector2(corner2.x * zoom_factor, corner1.y * zoom_factor), Vector2(corner2.x * zoom_factor, corner2.y * zoom_factor), grid_colour, 2.0, false)
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# Highlight selected frames in the spritesheet
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for loop in range(end_cell - start_cell + 1):
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var current_cell = start_cell + loop
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var frame_row = (current_cell - 1) / total_num_columns
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var frame_column = (current_cell - 1) % total_num_columns
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var corner1 = Vector2(frame_column * cell_size.x, frame_row * cell_size.y)
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var corner2 = Vector2(corner1.x + cell_size.x, corner1.y + cell_size.y)
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draw_line(Vector2(corner1.x * zoom_factor, corner1.y * zoom_factor), Vector2(corner2.x * zoom_factor, corner1.y * zoom_factor), highlight_colour, 2.0, false)
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draw_line(Vector2(corner1.x * zoom_factor, corner1.y * zoom_factor), Vector2(corner1.x * zoom_factor, corner2.y * zoom_factor), highlight_colour, false)
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draw_line(Vector2(corner1.x * zoom_factor, corner2.y * zoom_factor), Vector2(corner2.x * zoom_factor, corner2.y * zoom_factor), highlight_colour, 2.0, false)
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draw_line(Vector2(corner2.x * zoom_factor, corner1.y * zoom_factor), Vector2(corner2.x * zoom_factor, corner2.y * zoom_factor), highlight_colour, 2.0, false)
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