71 lines
1.9 KiB
Python
71 lines
1.9 KiB
Python
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"""Regression test: GridPointState references must not dangle after grid resize.
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Issue #265: GridPointState objects held Python references to internal vectors
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that could be invalidated when the underlying grid data was reallocated.
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Fix: GridPointState now copies data or holds safe references that survive
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grid modifications.
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"""
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import mcrfpy
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import sys
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PASS = True
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def check(name, condition):
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global PASS
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if not condition:
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print(f"FAIL: {name}")
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PASS = False
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else:
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print(f" ok: {name}")
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# Test 1: Access GridPointState after entity transfer
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grid = mcrfpy.Grid(grid_size=(10, 10))
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entity = mcrfpy.Entity(grid_pos=(5, 5), grid=grid)
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entity.update_visibility()
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state = entity.at(3, 3)
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check("GridPointState accessible", state is not None)
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# Transfer entity to a different grid (invalidates old gridstate)
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grid2 = mcrfpy.Grid(grid_size=(20, 20))
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entity.grid = grid2
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entity.update_visibility()
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# Old state reference should not crash
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# (In the buggy version, accessing state after transfer would read freed memory)
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try:
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# Access the new gridstate
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new_state = entity.at(15, 15)
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check("GridPointState valid after transfer", new_state is not None)
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except Exception as e:
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check(f"GridPointState valid after transfer (exception: {e})", False)
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# Test 2: Multiple entities with GridPointState references
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entities = []
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for i in range(5):
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e = mcrfpy.Entity(grid_pos=(i, i), grid=grid)
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entities.append(e)
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for e in entities:
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e.update_visibility()
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states = [e.at(0, 0) for e in entities]
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check("Multiple GridPointState refs created", len(states) == 5)
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# Remove all entities (should not crash)
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for e in entities:
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e.grid = None
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check("Entities removed safely", len(grid.entities) == 0)
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# Test 3: GridPoint reference stability
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gp = grid.at(5, 5)
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check("GridPoint accessible", gp is not None)
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check("GridPoint walkable", gp.walkable == True or gp.walkable == False)
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if PASS:
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print("PASS")
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sys.exit(0)
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else:
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sys.exit(1)
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