diff --git a/debug.cpp b/debug.cpp
index d6d7626e..19ce0547 100644
--- a/debug.cpp
+++ b/debug.cpp
@@ -5,6 +5,7 @@ namespace hr {
 
 EX int steplimit = 0;
 EX int cstep;
+EX bool buggyGeneration = false;
 
 EX vector<cell*> buggycells;
 
@@ -34,8 +35,6 @@ cell *pathTowards(cell *pf, cell *pt) {
   return NULL;
   }
 
-bool buggyGeneration = false;
-
 bool errorReported = false;
 
 void describeCell(cell *c) {
@@ -575,7 +574,7 @@ void test_distances(int max) {
   println(hlog, "ok=", ok, " bad=", bad);
   }
 
-void raiseBuggyGeneration(cell *c, const char *s) {
+EX void raiseBuggyGeneration(cell *c, const char *s) {
 
   printf("procgen error (%p): %s\n", c, s);
   
diff --git a/flags.cpp b/flags.cpp
index a9bff975..fa2bd094 100644
--- a/flags.cpp
+++ b/flags.cpp
@@ -315,13 +315,13 @@ bool survivesFall(eMonster m) {
   return isBird(m) || m == moAirElemental || m == moSkeleton || isDragon(m) || m == moShadow || isGhostAether(m);
   }
 
-bool checkOrb(eMonster m1, eItem orb) {
+EX bool checkOrb(eMonster m1, eItem orb) {
   if(m1 == moPlayer) return markOrb(orb);
   if(isFriendly(m1)) return markEmpathy(orb);
   return false;
   }
 
-bool checkOrb2(eMonster m1, eItem orb) {
+EX bool checkOrb2(eMonster m1, eItem orb) {
   if(m1 == moPlayer) return markOrb2(orb);
   if(isFriendly(m1)) return markEmpathy2(orb);
   return false;
diff --git a/game.cpp b/game.cpp
index 0553457f..1375b9a8 100644
--- a/game.cpp
+++ b/game.cpp
@@ -87,7 +87,8 @@ int safetyseed;
 
 int showid = 0;
 
-bool invismove = false, invisfish = false; // last move was invisible [due to Fish]
+EX bool invismove = false;
+EX bool invisfish = false; // last move was invisible [due to Fish]
 
 int noiseuntil; // noise until the given turn
 
@@ -107,8 +108,8 @@ bool eq(short a, short b) { return a==b; }
 EX array<int, ittypes> items;
 EX array<int, motypes> kills;
 
-int explore[10], exploreland[10][landtypes], landcount[landtypes];
-map<modecode_t, array<int, ittypes> > hiitems;
+EX int explore[10], exploreland[10][landtypes], landcount[landtypes];
+EX map<modecode_t, array<int, ittypes> > hiitems;
 bool orbused[ittypes], lastorbused[ittypes];
 EX bool playermoved = true;  // center on the PC?
 bool flipplayer = true;   // flip the player image after move, do not flip after attack
@@ -142,7 +143,7 @@ vector<cell*> movesofgood[MAX_EDGE+1];
 
 int first7;           // the position of the first monster at distance 7 in dcal
 
-cellwalker cwt;       // single player character position
+EX cellwalker cwt;    // single player character position
 
 EX inline cell*& singlepos() { return cwt.at; }
 EX inline bool singleused() { return !(shmup::on || multi::players > 1); }
@@ -311,6 +312,13 @@ EX void countLocalTreasure() {
     }
   }
 
+#if HDR
+static const int NO_TREASURE = 1;
+static const int NO_YENDOR = 2;
+static const int NO_GRAIL = 4;
+static const int NO_LOVE = 8;
+#endif
+
 EX int gold(int no IS(0)) {
   int i = 0;
   if(!(no & NO_YENDOR)) i += items[itOrbYendor] * 50;
@@ -565,6 +573,44 @@ EX bool anti_alchemy(cell *w, cell *from) {
   return alch1;
   }
 
+#if HDR
+#define P_MONSTER    Flag(0)  // can move through monsters
+#define P_MIRROR     Flag(1)  // can move through mirrors
+#define P_REVDIR     Flag(2)  // reverse direction movement
+#define P_WIND       Flag(3)  // can move against the wind
+#define P_GRAVITY    Flag(4)  // can move against the gravity
+#define P_ISPLAYER   Flag(5)  // player-only moves (like the Round Table jump)
+#define P_ONPLAYER   Flag(6)  // always can step on the player
+#define P_FLYING     Flag(7)  // is flying
+#define P_BULLET     Flag(8)  // bullet can fly through more things
+#define P_MIRRORWALL Flag(9)  // mirror images go through mirror walls
+#define P_JUMP1      Flag(10) // first part of a jump
+#define P_JUMP2      Flag(11) // second part of a jump
+#define P_TELE       Flag(12) // teleport onto
+#define P_BLOW       Flag(13) // Orb of Air -- blow, or push
+#define P_AETHER     Flag(14) // aethereal
+#define P_FISH       Flag(15) // swimming
+#define P_WINTER     Flag(16) // fire resistant
+#define P_USEBOAT    Flag(17) // can use boat
+#define P_NOAETHER   Flag(18) // disable AETHER
+#define P_FRIENDSWAP Flag(19) // can move on friends (to swap with tem)
+#define P_ISFRIEND   Flag(20) // is a friend (can use Empathy + Winter/Aether/Fish combo)
+#define P_LEADER     Flag(21) // can push statues and use boats
+#define P_MARKWATER  Flag(22) // mark Orb of Water as used
+#define P_EARTHELEM  Flag(23) // Earth Elemental
+#define P_WATERELEM  Flag(24) // Water Elemental
+#define P_IGNORE37   Flag(25) // ignore the triheptagonal board
+#define P_CHAIN      Flag(26) // for chaining moves with boats
+#define P_DEADLY     Flag(27) // suicide moves allowed
+#define P_ROSE       Flag(28) // rose smell
+#define P_CLIMBUP    Flag(29) // allow climbing up
+#define P_CLIMBDOWN  Flag(30) // allow climbing down
+#define P_REPTILE    Flag(31) // is reptile
+#define P_VOID       Flag(32) // void beast
+#define P_PHASE      Flag(33) // phasing movement
+#define P_PULLMAGNET Flag(34) // pull the other part of the magnet
+#endif
+
 EX bool passable(cell *w, cell *from, flagtype flags) {
   bool revdir = (flags&P_REVDIR);
   bool vrevdir = revdir ^ bool(flags&P_VOID);
@@ -2514,7 +2560,7 @@ EX void fightmessage(eMonster victim, eMonster attacker, bool stun, flagtype fla
     }
   }
 
-EX void fallMonster(cell *c, flagtype flags) {
+EX void fallMonster(cell *c, flagtype flags IS(0)) {
   attackMonster(c, flags, moNone);
   }
 
diff --git a/graph.cpp b/graph.cpp
index f6a67505..ebacba85 100644
--- a/graph.cpp
+++ b/graph.cpp
@@ -10,9 +10,9 @@ int last_firelimit, firelimit;
 
 EX int inmirrorcount = 0;
 
-bool spatial_graphics;
-bool wmspatial, wmescher, wmplain, wmblack, wmascii;
-bool mmspatial, mmhigh, mmmon, mmitem;
+EX bool spatial_graphics;
+EX bool wmspatial, wmescher, wmplain, wmblack, wmascii;
+EX bool mmspatial, mmhigh, mmmon, mmitem;
 
 EX int detaillevel = 0;
 
@@ -620,7 +620,7 @@ void animallegs(const transmatrix& V, eMonster mo, color_t col, double footphase
 EX bool noshadow;
 
 #if CAP_SHAPES
-void ShadowV(const transmatrix& V, const hpcshape& bp, PPR prio) {
+EX void ShadowV(const transmatrix& V, const hpcshape& bp, PPR prio IS(PPR::MONSTER_SHADOW)) {
   if(WDIM == 2 && GDIM == 3 && bp.shs != bp.she) {
     auto& p = queuepolyat(V, bp, 0x18, PPR::TRANSPARENT_SHADOW); 
     p.outline = 0;
diff --git a/hud.cpp b/hud.cpp
index 6487d2ca..3080fc1e 100644
--- a/hud.cpp
+++ b/hud.cpp
@@ -58,7 +58,16 @@ EX int subclass(int i) {
 #define GLYPH_TARGET     512
 #define GLYPH_INSQUARE   1024
 
-eGlyphsortorder glyphsortorder;
+#if HDR
+enum eGlyphsortorder {
+  gsoFirstTop, gsoFirstBottom,
+  gsoLastTop, gsoLastBottom,
+  gsoLand, gsoValue,
+  gsoMAX
+  };
+#endif
+
+EX eGlyphsortorder glyphsortorder;
   
 int zero = 0;
 
diff --git a/hyper.h b/hyper.h
index 0f2fae18..326ea4e8 100644
--- a/hyper.h
+++ b/hyper.h
@@ -1165,64 +1165,6 @@ namespace polygonal {
 
 // passable flags
 
-#define P_MONSTER    Flag(0)  // can move through monsters
-#define P_MIRROR     Flag(1)  // can move through mirrors
-#define P_REVDIR     Flag(2)  // reverse direction movement
-#define P_WIND       Flag(3)  // can move against the wind
-#define P_GRAVITY    Flag(4)  // can move against the gravity
-#define P_ISPLAYER   Flag(5)  // player-only moves (like the Round Table jump)
-#define P_ONPLAYER   Flag(6)  // always can step on the player
-#define P_FLYING     Flag(7)  // is flying
-#define P_BULLET     Flag(8)  // bullet can fly through more things
-#define P_MIRRORWALL Flag(9)  // mirror images go through mirror walls
-#define P_JUMP1      Flag(10) // first part of a jump
-#define P_JUMP2      Flag(11) // second part of a jump
-#define P_TELE       Flag(12) // teleport onto
-#define P_BLOW       Flag(13) // Orb of Air -- blow, or push
-#define P_AETHER     Flag(14) // aethereal
-#define P_FISH       Flag(15) // swimming
-#define P_WINTER     Flag(16) // fire resistant
-#define P_USEBOAT    Flag(17) // can use boat
-#define P_NOAETHER   Flag(18) // disable AETHER
-#define P_FRIENDSWAP Flag(19) // can move on friends (to swap with tem)
-#define P_ISFRIEND   Flag(20) // is a friend (can use Empathy + Winter/Aether/Fish combo)
-#define P_LEADER     Flag(21) // can push statues and use boats
-#define P_MARKWATER  Flag(22) // mark Orb of Water as used
-#define P_EARTHELEM  Flag(23) // Earth Elemental
-#define P_WATERELEM  Flag(24) // Water Elemental
-#define P_IGNORE37   Flag(25) // ignore the triheptagonal board
-#define P_CHAIN      Flag(26) // for chaining moves with boats
-#define P_DEADLY     Flag(27) // suicide moves allowed
-#define P_ROSE       Flag(28) // rose smell
-#define P_CLIMBUP    Flag(29) // allow climbing up
-#define P_CLIMBDOWN  Flag(30) // allow climbing down
-#define P_REPTILE    Flag(31) // is reptile
-#define P_VOID       Flag(32) // void beast
-#define P_PHASE      Flag(33) // phasing movement
-#define P_PULLMAGNET Flag(34) // pull the other part of the magnet
-
-bool passable(cell *w, cell *from, flagtype flags);
-
-bool anti_alchemy(cell *w, cell *from);
-bool isElemental(eLand l);
-int coastval(cell *c, eLand base);
-int getHauntedDepth(cell *c);
-eLand randomElementalLand();
-bool notDippingForExtra(eItem i, eItem x);
-void placePrizeOrb(cell *c);
-void wandering();
-bool isSealand(eLand l);
-int newRoundTableRadius();
-bool grailWasFound(cell *c);
-extern bool buggyGeneration;
-int buildIvy(cell *c, int children, int minleaf);
-int celldistAltRelative(cell *c);
-int roundTableRadius(cell *c);
-eLand pickLandRPM(eLand old);
-bool bearsCamelot(eLand l);
-
-extern bool safety;
-
 #define SAGEMELT .1
 #define TEMPLE_EACH (among(geometry, gHoroRec, gHoroHex, gKiteDart3) ? 3 : (sol && binarytiling) ? 6 : (WDIM == 3 && binarytiling) ? 2 : geometry == gSpace435 ? 4 : (WDIM == 3 && hyperbolic) ? 3 : 6)
 #define PT(x, y) ((tactic::on || quotient == 2 || daily::on) ? (y) : inv::on ? min(2*(y),x) : (x))
@@ -1240,58 +1182,10 @@ extern bool safety;
 #define BUGLEV 15
 // #define BARLEV 9
 
-bool isKillable(cell *c);
-bool isKillableSomehow(cell *c);
-
-bool isAlchAny(eWall w);
-bool isAlchAny(cell *c);
-
 #define YDIST 101
 #define MODECODES (1ll<<61)
   
-extern cellwalker cwt; // player character position
-
-extern array<int, ittypes> items;
-extern array<int, motypes> kills;
-
-extern int explore[10], exploreland[10][landtypes], landcount[landtypes];
-
 typedef flagtype modecode_t;
-extern map<modecode_t, array<int, ittypes> > hiitems;
-
-extern eLand firstland, specialland;
-bool pseudohept(cell *c);
-bool pureHardcore();
-extern int cheater;
-int airdist(cell *c);
-bool eq(short a, short b);
-extern vector<cell*> dcal;   // queue for cpdist
-bool isPlayerOn(cell *c);
-bool isFriendly(eMonster m);
-bool isFriendly(cell *c);
-bool isChild(cell *w, cell *killed); // is w killed if killed is killed?
-
-static const int NO_TREASURE = 1;
-static const int NO_YENDOR = 2;
-static const int NO_GRAIL = 4;
-static const int NO_LOVE = 8;
-
-bool markOrb(eItem it); // mark the orb as 'used', return true if exists
-bool markEmpathy(eItem it); // mark both the given orb and Empathy as 'used', return true if exists
-bool markEmpathy2(eItem it); // as above, but next turn
-
-bool isMimic(eMonster m);
-bool isMimic(cell *c);
-
-void fallMonster(cell *c, flagtype flags = 0); // kill monster due to terrain
-
-bool attackMonster(cell *c, flagtype flags, eMonster killer);
-
-bool isWorm(eMonster m);
-bool isWorm(cell *c);
-void empathyMove(cell *c, cell *cto, int dir);
-bool isIvy(eMonster m);
-bool isIvy(cell *c);
 
 #define GUNRANGE 3
 
@@ -1301,41 +1195,6 @@ bool isIvy(cell *c);
 #define IC_ORB 2
 #define IC_NAI 3
 
-bool playerInPower();
-void activateFlash();
-void activateLightning();
-bool markOrb(eItem it);
-bool markOrb2(eItem it);
-void drainOrb(eItem it, int target = 0);
-void useupOrb(eItem it, int qty);
-
-void initgame();
-bool haveRangedTarget();
-eItem targetRangedOrb(cell *c, orbAction a);
-void reduceOrbPowers();
-int realstuntime(cell *c);
-
-extern bool invismove, invisfish;
-bool attackingForbidden(cell *c, cell *c2);
-void killOrStunMonster(cell *c2, eMonster who_killed);
-
-void useup(cell *c); // useup thumpers/bonfires
-cell *playerpos(int i);
-
-bool makeflame(cell *c, int timeout, bool checkonly);
-bool isPlayerInBoatOn(cell *c);
-bool isPlayerInBoatOn(cell *c, int i);
-void destroyBoats(cell *c, cell *cf, bool strandedToo);
-extern int lastexplore;
-extern int asteroids_generated, asteroid_orbs_generated;
-extern eLand lastland;
-bool againstRose(cell *cfrom, cell *cto);
-bool withRose(cell *cfrom, cell *cto);
-
-extern ld bounded_mine_percentage;
-extern int bounded_mine_quantity, bounded_mine_max;
-void generate_mines();
-
 // loops
 
 #define fakecellloop(ct) for(cell *ct = (cell*)1; ct; ct=NULL)
@@ -1387,17 +1246,6 @@ void generate_mines();
 #define AF_SIDE              Flag(30)   // side attack
 #define AF_CRUSH             Flag(31)   // Crusher's delayed attack
 
-bool canAttack(cell *c1, eMonster m1, cell *c2, eMonster m2, flagtype flags);
-
-extern int chaosmode;
-extern bool chaosUnlocked;
-extern bool chaosAchieved;
-bool isTechnicalLand(eLand l);
-int getGhostcount();
-
-void raiseBuggyGeneration(cell *c, const char *s);
-void verifyMutantAround(cell *c);
-
 #if CAP_SDL
 
 #if CAP_PNG
@@ -1411,28 +1259,12 @@ void IMAGESAVE(SDL_Surface *s, const char *fname);
 
 #endif
 
-void drawscreen();
-
-void buildAirmap();
-
-// currently works for worms only
-bool sameMonster(cell *c1, cell *c2);
-cell *wormhead(cell *c);
-eMonster getMount(int player_id);
-eMonster haveMount();
-
-bool isDragon(eMonster m);
-
 // for some reason I need this to compile under OSX
 
 #if ISMAC
 extern "C" { void *_Unwind_Resume = 0; }
 #endif
 
-void mountmove(cell *c, int spin, bool fp);
-void mountmove(cell *c, int spin, bool fp, cell *ppos);
-void mountswap(cell *c1, int spin1, bool fp1, cell *c2, int spin2, bool fp2);
-
 template<class T> struct dynamicval {
   T& where;
   T backup;
@@ -1463,11 +1295,6 @@ namespace stalemate {
   bool isPushto(cell *c);
   };
 
-extern int turncount;
-
-bool reduceOrbPower(eItem it, int cap);
-bool checkOrb(eMonster m1, eItem orb);
-
 namespace tortoise {
   extern int seekbits;
   int getRandomBits();
@@ -1613,10 +1440,6 @@ namespace mapeditor {
   bool drawUserShape(const transmatrix& V, eShapegroup group, int id, color_t color, cell *c, PPR prio = PPR::DEFAULT);
   }
 
-#if CAP_SHAPES
-void ShadowV(const transmatrix& V, const struct hpcshape& bp, PPR prio = PPR::MONSTER_SHADOW);
-#endif
-
 #define OUTLINE_NONE     0x000000FF
 #define OUTLINE_FRIEND   0x00FF00FF
 #define OUTLINE_ENEMY    0xFF0000FF
@@ -1629,46 +1452,15 @@ void ShadowV(const transmatrix& V, const struct hpcshape& bp, PPR prio = PPR::MO
 #define OUTLINE_FORE     ((forecolor << 8) + 0xFF)
 #define OUTLINE_BACK     ((backcolor << 8) + 0xFF)
 
-extern bool audio;
-extern string musiclicense;
-extern string musfname[landtypes];
-extern int musicvolume, effvolume;
-void initAudio();
-bool loadMusicInfo();
-void handlemusic();
-void playSeenSound(cell *c);
-void playSound(cell *c, const string& fname, int vol = 100);
-
 inline string pick123() { return cts('1' + rand() % 3); }
 inline string pick12() { return cts('1' + rand() % 2); }
 
-bool playerInBoat(int i);
-
 extern int lowfar;
-extern bool wmspatial, wmescher, wmplain, wmblack, wmascii;
-extern bool mmspatial, mmhigh, mmmon, mmitem;
-extern bool spatial_graphics;
 extern int maxreclevel, reclevel;
 
-string explain3D(ld *param);
-
 extern int detaillevel;
 extern bool quitmainloop;
 
-enum eGlyphsortorder {
-  gsoFirstTop, gsoFirstBottom,
-  gsoLastTop, gsoLastBottom,
-  gsoLand, gsoValue,
-  gsoMAX
-  };
-
-extern eGlyphsortorder glyphsortorder;
-
-void explodeMine(cell *c);
-bool mayExplodeMine(cell *c, eMonster who);
-void explosion(cell *c, int power, int central);
-void explodeBarrel(cell *c);
-
 enum eGravity { gsNormal, gsLevitation, gsAnti };
 extern eGravity gravity_state, last_gravity_state;
 
@@ -2269,6 +2061,8 @@ namespace princess {
 #define GRAIL_FOUND 0x4000
 #define GRAIL_RADIUS_MASK 0x3FFF
 
+extern vector<cell*> dcal;
+
 struct hrmap {
   virtual heptagon *getOrigin() { return NULL; }
   virtual cell *gamestart() { return getOrigin()->c7; }
@@ -2680,6 +2474,8 @@ template<> struct saver<ld> : dsaver<ld> {
 #if CAP_SHAPES
 struct floorshape;
 
+struct hpcshape;
+
 struct qfloorinfo {
   transmatrix spin;
   const hpcshape *shape;
diff --git a/landgen.cpp b/landgen.cpp
index c1ec413f..a9873ab4 100644
--- a/landgen.cpp
+++ b/landgen.cpp
@@ -8,9 +8,9 @@ namespace hr {
 
 EX bool safety = false;
 
-eLand lastland;
+EX eLand lastland;
 
-int lastexplore;
+EX int lastexplore;
 
 EX bool randomPatternsMode = false;
 EX int randompattern[landtypes];
@@ -34,7 +34,7 @@ EX bool notDippingFor(eItem i) {
   return v >= hrand(10) + 10;
   }
 
-bool notDippingForExtra(eItem i, eItem x) {
+EX bool notDippingForExtra(eItem i, eItem x) {
   if(peace::on) return false;
   if(chaosmode > 1) return true;
   int v = items[i] - min(items[x], currentLocalTreasure);
diff --git a/landlock.cpp b/landlock.cpp
index 2938edde..5fe01999 100644
--- a/landlock.cpp
+++ b/landlock.cpp
@@ -69,7 +69,8 @@ EX eLand oppositeElement(eLand l, eLand l2) {
 
 // land unlocking
 
-EX eLand firstland = laIce, specialland = laIce;
+EX eLand firstland = laIce;
+EX eLand specialland = laIce;
 
 EX int chaosmode = 0;
 
diff --git a/monstergen.cpp b/monstergen.cpp
index 366efa14..a8830a97 100644
--- a/monstergen.cpp
+++ b/monstergen.cpp
@@ -229,7 +229,7 @@ EX int getGhostTimer() {
   return shmup::on ? (shmup::curtime - lastexplore) / 350 : turncount - lastexplore;
   }
 
-int getGhostcount() {
+EX int getGhostcount() {
   if(peace::on) return 0;
   int t = getGhostTimer();
   int ghostcount = 0;
diff --git a/orbs.cpp b/orbs.cpp
index 4c4af43c..909cab92 100644
--- a/orbs.cpp
+++ b/orbs.cpp
@@ -43,7 +43,7 @@ EX void useupOrb(eItem it, int qty) {
   if(items[it] < 0) items[it] = 0;
   }
 
-EX void drainOrb(eItem it, int target) {
+EX void drainOrb(eItem it, int target IS(0)) {
   if(items[it] > target) useupOrb(it, items[it] - target);
   }
 
diff --git a/pattern2.cpp b/pattern2.cpp
index 9d44cd75..db979425 100644
--- a/pattern2.cpp
+++ b/pattern2.cpp
@@ -1335,7 +1335,7 @@ int pattern_threecolor(cell *c) {
 // returns ishept in the normal tiling;
 // in the 'pure heptagonal' tiling, returns true for a set of cells
 // which roughly corresponds to the heptagons in the normal tiling
-bool pseudohept(cell *c) {
+EX bool pseudohept(cell *c) {
   #if CAP_IRR
   if(IRREGULAR) return irr::pseudohept(c);
   #endif
diff --git a/sound.cpp b/sound.cpp
index 1c833f4b..66570c87 100644
--- a/sound.cpp
+++ b/sound.cpp
@@ -3,11 +3,12 @@
 
 namespace hr {
 
-const char *musicfile = "";
-bool audio;
-string musiclicense;
-string musfname[landtypes];
-EX int musicvolume = 60, effvolume = 60;
+EX const char *musicfile = "";
+EX bool audio;
+EX string musiclicense;
+EX string musfname[landtypes];
+EX int musicvolume = 60;
+EX int effvolume = 60;
 
 EX eLand getCurrentLandForMusic() {
   eLand id = ((anims::center_music()) && centerover.at) ? centerover.at->land : cwt.at->land;
@@ -206,7 +207,7 @@ string wheresounds = HYPERPATH "sounds/";
 
 hookset<bool(const string& s, int vol)> *hooks_sound;
 
-EX void playSound(cell *c, const string& fname, int vol) {
+EX void playSound(cell *c, const string& fname, int vol IS(100)) {
   if(effvolume == 0) return;
   if(callhandlers(false, hooks_sound, fname, vol)) return;
   // printf("Play sound: %s\n", fname.c_str());