144 lines
5.0 KiB
Python
144 lines
5.0 KiB
Python
import sys
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from constants import TILE_WIDTH_HEIGHT, CHUNK_WIDTH, CHUNK_HEIGHT
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import math
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def parseLayers(data):
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parsed = {}
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# Extract layers
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parsed['layers'] = data['layers']
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# Object layer
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for layer in parsed['layers']:
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if layer.get('type') == 'objectgroup':
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parsed['objectLayer'] = layer
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break
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if parsed['objectLayer'] is None:
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print(f"Error: Data does not contain an object layer.")
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sys.exit(1)
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if 'objects' not in parsed['objectLayer'] or not isinstance(parsed['objectLayer']['objects'], list):
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print(f"Error: Object layer does not contain 'objects' key or it is not a list.")
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sys.exit(1)
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# Tile Layers
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parsed['tileLayers'] = []
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for layer in parsed['layers']:
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if layer.get('type') == 'tilelayer':
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parsed['tileLayers'].append(layer)
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if len(parsed['tileLayers']) == 0:
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print(f"Error: Data does not contain any tile layers.")
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sys.exit(1)
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# First layer
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parsed['firstLayer'] = parsed['tileLayers'][0]
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if 'width' not in parsed['firstLayer'] or 'height' not in parsed['firstLayer']:
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print(f"Error: First layer does not contain 'width' or 'height' key.")
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sys.exit(1)
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if 'chunks' not in parsed['firstLayer'] or not isinstance(parsed['firstLayer']['chunks'], list):
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print(f"Error: First layer does not contain 'chunks' key.")
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sys.exit(1)
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if len(parsed['firstLayer']['chunks']) == 0:
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print(f"Error: First layer does not contain any chunks.")
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sys.exit(1)
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parsed['firstLayerFirstChunk'] = parsed['firstLayer']['chunks'][0]
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# Now determine the input map bounds.
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isMinXFound = False
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isMaxXFound = False
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isMinYFound = False
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isMaxYFound = False
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parsed['inputMapLowestX'] = 0
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parsed['inputMapHighestX'] = 0
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parsed['inputMapLowestY'] = 0
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parsed['inputMapHighestY'] = 0
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parsed['inputLayerWidthInTiles'] = parsed['firstLayerFirstChunk']['width']
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parsed['inputLayerHeightInTiles'] = parsed['firstLayerFirstChunk']['height']
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for chunk in parsed['firstLayer']['chunks']:
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if 'x' not in chunk or 'y' not in chunk:
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print(f"Error: Chunk in first layer does not contain 'x' or 'y' key.")
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sys.exit(1)
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# Check chunk is not empty
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if 'data' not in chunk or not isinstance(chunk['data'], list):
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print(f"Error: Chunk in first layer does not contain 'data' key or it is not a list.")
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sys.exit(1)
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if len(chunk['data']) != parsed['inputLayerWidthInTiles'] * parsed['inputLayerHeightInTiles']:
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print(f"Error: Chunk in first layer does not contain the expected number of tiles.")
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sys.exit(1)
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chunkEmpty = True
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for tile in chunk['data']:
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if tile == 0:
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continue
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chunkEmpty = False
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break
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if chunkEmpty:
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print(f"Warning: Chunk at ({chunk['x']}, {chunk['y']}) is empty, skipping.")
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continue
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chunkX = chunk['x']
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chunkY = chunk['y']
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if parsed['inputMapLowestX'] > chunkX or not isMinXFound:
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parsed['inputMapLowestX'] = chunkX
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isMinXFound = True
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if parsed['inputMapHighestX'] < chunkX or not isMaxXFound:
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parsed['inputMapHighestX'] = chunkX
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isMaxXFound = True
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if parsed['inputMapLowestY'] > chunkY or not isMinYFound:
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parsed['inputMapLowestY'] = chunkY
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isMinYFound = True
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if parsed['inputMapHighestY'] < chunkY or not isMaxYFound:
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parsed['inputMapHighestY'] = chunkY
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isMaxYFound = True
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parsed['inputMapHighestX'] += parsed['inputLayerWidthInTiles']
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parsed['inputMapHighestY'] += parsed['inputLayerHeightInTiles']
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# We now offset all chunks by the lowest X/Y values to make them start at (0, 0).
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for layerIndex, layer in enumerate(parsed['tileLayers']):
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for chunkIndex, chunk in enumerate(layer['chunks']):
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chunk['x'] -= parsed['inputMapLowestX']
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chunk['y'] -= parsed['inputMapLowestY']
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layer['chunks'][chunkIndex] = chunk
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parsed['layers'][layerIndex] = layer
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# Same for object layers
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for obIndex, ob in enumerate(parsed['objectLayer']['objects']):
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if 'x' not in ob or 'y' not in ob:
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print(f"Error: Object in object layer does not contain 'x' or 'y' key.")
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sys.exit(1)
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ob['x'] -= parsed['inputMapLowestX'] * TILE_WIDTH_HEIGHT
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ob['y'] -= parsed['inputMapLowestY'] * TILE_WIDTH_HEIGHT
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# Objects are bottom aligned in tiled, so we need to adjust the Y coordinate.
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ob['y'] -= TILE_WIDTH_HEIGHT
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# Round off the coordinates
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ob['x'] = round(ob['x'])
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ob['y'] = round(ob['y'])
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parsed['objectLayer']['objects'][obIndex] = ob
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parsed['mapWidthInTiles'] = parsed['inputMapHighestX'] - parsed['inputMapLowestX']
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parsed['mapHeightInTiles'] = parsed['inputMapHighestY'] - parsed['inputMapLowestY']
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parsed['mapWidthInRealChunks'] = math.ceil(float(parsed['mapWidthInTiles']) / float(CHUNK_WIDTH))
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parsed['mapHeightInRealChunks'] = math.ceil(float(parsed['mapHeightInTiles']) / float(CHUNK_HEIGHT))
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if parsed['inputLayerWidthInTiles'] < CHUNK_WIDTH or parsed['inputLayerHeightInTiles'] < CHUNK_HEIGHT:
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print(f"Error: Input layer size is smaller than chunk size.")
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sys.exit(1)
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return parsed |