Split off portions of externs.h and enum.h into other files. The

crawl_environment, player and monsters classes have been left in
externs.h, which necessitates that all of the enums references by
those classes stay in enums.h, since you can't forward declare an
enum.  However, it's a start.

Also, portions of misc.{cc,h} have been split off into traps.{cc,h},
place.{cc,h} and terrain.{cc,h}


git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@2095 c06c8d41-db1a-0410-9941-cceddc491573

1 files changed, 50 insertions, 0 deletions

diff --git a/crawl-ref/source/ray.h b/crawl-ref/source/ray.h
new file mode 100644
index 0000000000..0c2895574b
--- /dev/null
+++ b/crawl-ref/source/ray.h
@@ -0,0 +1,50 @@
+/*
+ *  File:       ray.h
+ *  Summary:    Ray definition
+ *  Written by: Linley Henzell
+ *
+ *  Modified for Crawl Reference by $Author: j-p-e-g $ on $Date: 2007-09-10 11:21:32 -0700 (Mon, 10 Sep 2007) $
+ *
+ *  Change History (most recent first):
+ *
+ * <1>     7/11/07    MPC   Split off from externs.h
+ */
+
+#ifndef RAY_H
+#define RAY_H
+
+struct ray_def
+{
+public:
+    double accx;
+    double accy;
+    double slope;
+    // Quadrant 1: down-right
+    // Quadrant 2: down-left
+    // Quadrant 3: up-left
+    // Quadrant 4: up-right
+    int quadrant;
+    int fullray_idx;            // for cycling: where did we come from?
+
+public:
+    ray_def();
+    int x() const { return static_cast<int>(accx); }
+    int y() const { return static_cast<int>(accy); }
+    coord_def pos() const { return coord_def(x(), y()); }
+    
+    // returns the direction taken (0,1,2)
+    int advance(bool shorten = false, const coord_def *p = NULL);
+    int advance_through(const coord_def &point);
+    void advance_and_bounce();
+    void regress();
+
+private:
+    int raw_advance();
+    double reflect(bool x, double oldc, double newc) const;
+    double reflect(double x, double c) const;
+    void set_reflect_point(const double oldx, const double oldy,
+                           double *newx, double *newy,
+                           bool blocked_x, bool blocked_y);
+};
+
+#endif