From 5d00438a858bb4a404d2b5d5c6f9d9fa9e58663f Mon Sep 17 00:00:00 2001
From: Erich Eckner <git@eckner.net>
Date: Wed, 21 Nov 2018 15:24:28 +0100
Subject: ScaleByMapSize should not scale by layerCount(), too - and we need to
 move some lines from layer_func.h to map_func.h to avoid cyclic includes

---
 src/layer_func.h | 59 -------------------------------------------------------
 src/map_func.h   | 60 +++++++++++++++++++++++++++++++++++++++++++++++++++++++-
 2 files changed, 59 insertions(+), 60 deletions(-)

diff --git a/src/layer_func.h b/src/layer_func.h
index be060cc27..d472d23b5 100644
--- a/src/layer_func.h
+++ b/src/layer_func.h
@@ -28,65 +28,6 @@ void FixUndergroundHeights();
 
 #define FOR_ALL_LAYERS(var) for (uint var = 0; var < LayerCount(); var++)
 
-
-/**
- * Get the size of the layer along the X
- * @return the number of tiles along the X of the layer
- */
-static inline uint LayerSizeX()
-{
-	extern uint _map_size_x;
-	return _map_size_x;
-}
-
-/**
- * Get the size of the layer along the Y
- * @return the number of tiles along the Y of the layer
- */
-static inline uint LayerSizeY()
-{
-	extern uint _layer_size_y;
-	return _layer_size_y;
-}
-
-/**
- * Gets the maximum X coordinate within the map, including MP_VOID
- * @return the maximum X coordinate
- */
-static inline uint LayerMaxX()
-{
-	return LayerSizeX() - 1;
-}
-
-/**
- * Gets the maximum Y coordinate within the map, including MP_VOID
- * @return the maximum Y coordinate
- */
-static inline uint LayerMaxY()
-{
-	return LayerSizeY() - 1;
-}
-
-/**
- * Get the layer counts
- * @return the number of layers
- */
-static inline uint LayerCount()
-{
-	extern uint _layer_count;
-	return _layer_count;
-}
-
-/**
- * Get the layer counts
- * @return the number of layers
- */
-static inline uint LayerCountLog()
-{
-	extern uint _layer_count_log;
-	return _layer_count_log;
-}
-
 /**
  * Get the X component of a tile
  * @param tile the tile to get the X component of
diff --git a/src/map_func.h b/src/map_func.h
index e8ab9036e..e00251243 100644
--- a/src/map_func.h
+++ b/src/map_func.h
@@ -113,6 +113,64 @@ static inline uint MapMaxY()
 	return MapSizeY() - 1;
 }
 
+/**
+ * Get the size of the layer along the X
+ * @return the number of tiles along the X of the layer
+ */
+static inline uint LayerSizeX()
+{
+	extern uint _map_size_x;
+	return _map_size_x;
+}
+
+/**
+ * Get the size of the layer along the Y
+ * @return the number of tiles along the Y of the layer
+ */
+static inline uint LayerSizeY()
+{
+	extern uint _layer_size_y;
+	return _layer_size_y;
+}
+
+/**
+ * Gets the maximum X coordinate within the map, including MP_VOID
+ * @return the maximum X coordinate
+ */
+static inline uint LayerMaxX()
+{
+	return LayerSizeX() - 1;
+}
+
+/**
+ * Gets the maximum Y coordinate within the map, including MP_VOID
+ * @return the maximum Y coordinate
+ */
+static inline uint LayerMaxY()
+{
+	return LayerSizeY() - 1;
+}
+
+/**
+ * Get the layer counts
+ * @return the number of layers
+ */
+static inline uint LayerCount()
+{
+	extern uint _layer_count;
+	return _layer_count;
+}
+
+/**
+ * Get the layer counts
+ * @return the number of layers
+ */
+static inline uint LayerCountLog()
+{
+	extern uint _layer_count_log;
+	return _layer_count_log;
+}
+
 /**
  * Scales the given value by the map size, where the given value is
  * for a 256 by 256 map.
@@ -123,7 +181,7 @@ static inline uint ScaleByMapSize(uint n)
 {
 	/* Subtract 12 from shift in order to prevent integer overflow
 	 * for large values of n. It's safe since the min mapsize is 64x64. */
-	return CeilDiv(n << (MapLogX() + MapLogY() - 12), 1 << 4);
+	return CeilDiv(n << (MapLogX() + MapLogY() - LayerCountLog() - 12), 1 << 4);
 }
 
 
-- 
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