cpp/openttd-patchpack/source Changeset - r21765:3432f0c0d85c

Changeset - r21765:3432f0c0d85c

Parent rev.

Child rev.

[Not reviewed]

master

0 1 0

rubidium - 10 years ago 2014-09-22 15:04:18
rubidium@openttd.org

(svn r26908) -Codechange: replace a magic number by a more logical calculation

1 file changed with 7 insertions and 5 deletions:

src/viewport.cpp

0 comments (0 inline, 0 general)

src/viewport.cpp

➞

Show inline comments

@@ @@ -419,11 +419,13 @@ static Point TranslateXYToTileCoord(cons @@
 	a = y - x;
 	b = y + x;
 	/* we need to move variables in to the valid range, as the
 	 * GetTileZoomCenterWindow() function can call here with invalid x and/or y,
 	 * when the user tries to zoom out along the sides of the map */
 	a = Clamp(a, -4 * (int)TILE_SIZE, (int)(MapMaxX() * TILE_SIZE) - 1);
 	b = Clamp(b, -4 * (int)TILE_SIZE, (int)(MapMaxY() * TILE_SIZE) - 1);
 	/* Bring the coordinates near to a valid range. This is mostly due to the
 	 * tiles on the north side of the map possibly being drawn too high due to
 	 * the extra height levels. So at the top we allow a number of extra tiles.
 	 * This number is based on the tile height and pixels. */
 	int extra_tiles = CeilDiv(_settings_game.construction.max_heightlevel * TILE_HEIGHT, TILE_PIXELS);
 	a = Clamp(a, -extra_tiles * TILE_SIZE, MapMaxX() * TILE_SIZE - 1);
 	b = Clamp(b, -extra_tiles * TILE_SIZE, MapMaxY() * TILE_SIZE - 1);
 	/* (a, b) is the X/Y-world coordinate that belongs to (x,y) if the landscape would be completely flat on height 0.
 	 * Now find the Z-world coordinate by fix point iteration.

0 comments (0 inline, 0 general)