Abstract away the operations involving a sentinel value for coordinates.

[super-star-trek.git] / src / sst.h

diff --git a/src/sst.h b/src/sst.h
index 2e6f90994d9ed41a272c73e9c2d4b4b13c447da6..a9bf781e546a588bcd558fdde1a99ff2441fb253 100644 (file)
--- a/src/sst.h
+++ b/src/sst.h
@@ -45,14 +45,15 @@ typedef struct {int x; int y;} coord;
 #define square(i)              ((i)*(i))
 #define same(c1, c2)           ((c1.x == c2.x) && (c1.y == c2.y))
 #define distance(c1, c2)       sqrt(square(c1.x - c2.x) + square(c1.y - c2.y))
+#define invalidate(w)          w.x = w.y = 0
+#define is_valid(w)            (w.x == 0 || w.y == 0)
 
 typedef struct {
     coord w;
     enum {M=0, N=1, O=2} pclass;
     int inhabited;     /* if NZ, an index into a name array */
 #define UNINHABITED    -1
-    int crystals; /* has crystals */
-#define MINED  -1      /* used to have crystals, but they were mined out */
+    enum {mined=-1, present=0, absent=1} crystals; /* has crystals */
     enum {unknown, known, shuttle_down} known;
 } planet;
 
@@ -286,7 +287,6 @@ struct game {
        nenhere,        // number of enemies in quadrant
        irhere,         // Romulans in quadrant
        isatb,          // =1 if super commander is attacking base
-       iattak,         // attack recursion elimination (was cracks[4])
        tourn,          // tournament number
        proben,         // number of moves for probe
        nprobes;        // number of probes available
@@ -400,7 +400,7 @@ coord randplace(int);
 coord dropin(feature);
 void newcnd(void);
 void sortkl(void);
-void imove(void);
+void imove(bool);
 void ram(bool, feature, coord);
 void crmena(bool, feature, enum loctype, coord w);
 void deadkl(coord, feature, coord);