From c72f09adfa6f776ff5cabd0b8e4b4e0a2e752703 Mon Sep 17 00:00:00 2001
From: Robert Vollmert <rvollmert@gmx.net>
Date: Fri, 30 Oct 2009 15:59:29 +0100
Subject: Splitting up stuff.cc.

New: colour.cc, coord.cc, coordit.cc, random.cc, rng.cc.
---
 crawl-ref/source/coord.cc | 100 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 100 insertions(+)
 create mode 100644 crawl-ref/source/coord.cc

(limited to 'crawl-ref/source/coord.cc')

diff --git a/crawl-ref/source/coord.cc b/crawl-ref/source/coord.cc
new file mode 100644
index 0000000000..59a75cf888
--- /dev/null
+++ b/crawl-ref/source/coord.cc
@@ -0,0 +1,100 @@
+#include "AppHdr.h"
+
+#include "coord.h"
+
+#include "directn.h"
+#include "random.h"
+#include "state.h"
+
+//////////////////////////////////////////////////////////////////////////
+// coord_def
+int coord_def::distance_from(const coord_def &other) const
+{
+    return (grid_distance(*this, other));
+}
+
+int grid_distance( const coord_def& p1, const coord_def& p2 )
+{
+    return grid_distance(p1.x, p1.y, p2.x, p2.y);
+}
+
+// More accurate than distance() given the actual movement geometry -- bwr
+int grid_distance( int x, int y, int x2, int y2 )
+{
+    const int dx = abs( x - x2 );
+    const int dy = abs( y - y2 );
+
+    // returns distance in terms of moves:
+    return ((dx > dy) ? dx : dy);
+}
+
+int distance( const coord_def& p1, const coord_def& p2 )
+{
+    return distance(p1.x, p1.y, p2.x, p2.y);
+}
+
+int distance( int x, int y, int x2, int y2 )
+{
+    //jmf: now accurate, but remember to only compare vs. pre-squared distances
+    //     thus, next to == (distance(m1.x,m1.y, m2.x,m2.y) <= 2)
+    const int dx = x - x2;
+    const int dy = y - y2;
+
+    return ((dx * dx) + (dy * dy));
+}
+
+bool adjacent( const coord_def& p1, const coord_def& p2 )
+{
+    return grid_distance(p1, p2) <= 1;
+}
+
+bool in_bounds_x(int x)
+{
+    return (x > X_BOUND_1 && x < X_BOUND_2);
+}
+
+bool in_bounds_y(int y)
+{
+    return (y > Y_BOUND_1 && y < Y_BOUND_2);
+}
+
+// Returns true if inside the area the player can move and dig (ie exclusive).
+bool in_bounds(int x, int y)
+{
+    return (in_bounds_x(x) && in_bounds_y(y));
+}
+
+bool map_bounds_x(int x)
+{
+    return (x >= X_BOUND_1 && x <= X_BOUND_2);
+}
+
+bool map_bounds_y(int y)
+{
+    return (y >= Y_BOUND_1 && y <= Y_BOUND_2);
+}
+
+// Returns true if inside the area the player can map (ie inclusive).
+// Note that terrain features should be in_bounds() leaving an outer
+// ring of rock to frame the level.
+bool map_bounds(int x, int y)
+{
+    return (map_bounds_x(x) && map_bounds_y(y));
+}
+
+coord_def random_in_bounds()
+{
+    if (crawl_state.arena)
+    {
+        const coord_def &ul = crawl_view.glos1; // Upper left
+        const coord_def &lr = crawl_view.glos2; // Lower right
+
+        return coord_def(random_range(ul.x, lr.x - 1),
+                         random_range(ul.y, lr.y - 1));
+    }
+    else
+        return coord_def(random_range(MAPGEN_BORDER, GXM - MAPGEN_BORDER - 1),
+                         random_range(MAPGEN_BORDER, GYM - MAPGEN_BORDER - 1));
+}
+
+
-- 
cgit v1.2.3-54-g00ecf