Moved Stars45 to StarsEx

1 files changed, 86 insertions, 0 deletions

diff --git a/StarsEx/RLoc.cpp b/StarsEx/RLoc.cpp
new file mode 100644
index 0000000..911c4ea
--- /dev/null
+++ b/StarsEx/RLoc.cpp
@@ -0,0 +1,86 @@
+/*  Starshatter: The Open Source Project
+    Copyright (c) 2021-2022, Starshatter: The Open Source Project Contributors
+    Copyright (c) 2011-2012, Starshatter OpenSource Distribution Contributors
+    Copyright (c) 1997-2006, Destroyer Studios LLC.
+
+    AUTHOR:       John DiCamillo
+
+
+    OVERVIEW
+    ========
+    Navigation Point class implementation
+*/
+
+#include "RLoc.h"
+#include "Random.h"
+
+// +----------------------------------------------------------------------+
+
+RLoc::RLoc()
+    : rloc(0), dex(0), dex_var(5.0e3f), az(0), az_var(3.1415f), el(0), el_var(0.1f)
+{ }
+
+RLoc::RLoc(const Point& l, double d, double dv)
+    : loc(l), base_loc(l), rloc(0), dex((float) d), dex_var((float) dv),
+      az(0), az_var(3.1415f), el(0), el_var(0.1f)
+{ }
+
+RLoc::RLoc(RLoc* l, double d, double dv)
+    : rloc(l), dex((float) d), dex_var((float) dv),
+      az(0), az_var(3.1415f), el(0), el_var(0.1f)
+{ }
+
+RLoc::RLoc(const RLoc& r)
+    : loc(r.loc), base_loc(r.base_loc), rloc(r.rloc),
+      dex(r.dex), dex_var(r.dex_var),
+      az(r.az),   az_var(r.az_var),
+      el(r.el),   el_var(r.el_var)
+{ }
+
+RLoc::~RLoc()
+{ }
+
+// +----------------------------------------------------------------------+
+
+const Point&
+RLoc::Location()
+{
+    if (rloc || dex > 0) Resolve();
+    return loc;
+}
+
+// +----------------------------------------------------------------------+
+
+void
+RLoc::Resolve()
+{
+    if (rloc) {
+        base_loc = rloc->Location();
+        rloc = 0;
+    }
+
+    if (dex > 0) {
+        double d = dex + Random(-dex_var, dex_var);
+        double a = az  + Random(-az_var,  az_var);
+        double e = el  + Random(-el_var,  el_var);
+
+        Point  p = Point(d *  sin(a),
+        d * -cos(a),
+        d *  sin(e));
+
+        loc = base_loc + p;
+        dex = 0;
+    }
+    else {
+        loc = base_loc;
+    }
+}
+
+// +----------------------------------------------------------------------+
+
+void
+RLoc::SetBaseLocation(const Point& l)
+{
+    base_loc = l;
+    loc      = l;
+}