39 lines
1.1 KiB
GDScript
39 lines
1.1 KiB
GDScript
class_name TerrainChunkVariant
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extends RefCounted
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var definition: TerrainChunkDefinition
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var quarter_turns := 0
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var edge_profiles: Array[TerrainChunkEdgeProfile] = []
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func profile(edge: TerrainChunkTopology.Edge) -> TerrainChunkEdgeProfile:
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return edge_profiles[int(edge)]
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func rotation_radians() -> float:
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return float(posmod(quarter_turns, 4)) * PI * 0.5
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func stable_key() -> String:
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return "%s@%d" % [definition.stable_id, posmod(quarter_turns, 4)]
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func topology_signature(quantization: float) -> String:
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var tokens := PackedStringArray()
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for edge_value: int in TerrainChunkTopology.Edge.values():
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var edge := edge_value as TerrainChunkTopology.Edge
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tokens.append(profile(edge).signature(quantization))
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return "|".join(tokens)
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func rotated_edge_mask(source_mask: int) -> int:
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var result := 0
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for edge_value: int in TerrainChunkTopology.Edge.values():
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if (source_mask & (1 << edge_value)) == 0:
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continue
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var rotated := TerrainChunkTopology.rotated_edge(
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edge_value as TerrainChunkTopology.Edge,
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quarter_turns,
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)
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result |= 1 << int(rotated)
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return result
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