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Prevent crash caused by division by zero in NetHackW.

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Bart House
2019-12-21 15:34:57 -08:00
parent 496a81d5b0
commit 7074b1c55f
1 changed files with 4 additions and 0 deletions
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4
win/win32/mhmap.c
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@@ -308,6 +308,10 @@ mswin_map_stretch(HWND hWnd, LPSIZE map_size, BOOL redraw)
data->xFrontTile = (int) ((double) data->xBackTile * data->frontScale);
data->yFrontTile = (int) ((double) data->yBackTile * data->frontScale);
/* ensure front tile is non-zero in size */
data->xFrontTile = max(data->xFrontTile, 1);
data->yFrontTile = max(data->yFrontTile, 1);
/* calcuate ASCII cursor height */
data->yBlinkCursor = (int) ((double) CURSOR_HEIGHT * data->backScale);
data->yNoBlinkCursor = data->yBackTile;