// Hyperbolic Rogue
// implementation of various simple flags for lands, items, monsters, and walls

// Copyright (C) 2011-2016 Zeno Rogue, see 'hyper.cpp' for details

bool isIcyLand(eLand l) {
  return l == laIce || l == laCocytus || l == laBlizzard;
  }

bool isIcyLand(cell *c) {
  return isIcyLand(c->land);
  }

bool isGravityLand(eLand l) {
  return 
    l == laIvoryTower || l == laEndorian ||
    l == laMountain || l == laDungeon;
  }

// watery

bool isWatery(cell *c) {
  return c->wall == waCamelotMoat || c->wall == waSea || c->wall == waLake;
  }

bool isChasmy(cell *c) {
  return c->wall == waChasm || c->wall == waSulphur || c->wall == waSulphurC || c->wall == waBubble ||
    c->wall == waMercury;
  }

bool isWateryOrBoat(cell *c) {
  return isWatery(c) || c->wall == waBoat;
  }

bool isNoFlight(cell *c) {
  return 
    c->wall == waBoat || c->wall == waVineHalfA || c->wall == waVineHalfB ||
    c->wall == waStrandedBoat || c->wall == waTrunk ||
    c->wall == waBigBush || c->wall == waSmallBush;
  }

bool boatStrandable(cell *c) {
  return c->wall == waNone && (c->land == laLivefjord || c->land == laOcean);
  }

// monster/wall types

bool isFire(cell *w) {
  return w->wall == waFire || w->wall == waPartialFire || w->wall == waEternalFire;
  }

bool isFireOrMagma(cell *w) {
  return isFire(w) || w->wall == waMagma;
  }

bool isThumper(eWall w) {
  return w == waThumperOff || w == waThumperOn;
  }

bool isThumper(cell *c) {
  return isThumper(c->wall);
  }

bool isActivable(cell *c) {
  return c->wall == waThumperOff || c->wall == waBonfireOff;
  }

bool hasTimeout(cell *c) {
  return c->wall == waThumperOn || c->wall == waFire || c->wall == waPartialFire ||
    c->wall == waTempWall || c->wall == waTempFloor || c->wall == waTempBridge ||
    c->wall == waTempBridgeBlocked;
  }

bool isMimic(eMonster m) {
  return m == moMimic;
  }

int mirrorcolor(bool mirrored) {
  return mirrored ? 0x8080FF : 0xFF80C0;
  }

bool isMimic(cell *c) { 
  return isMimic(c->monst);
  }

bool isPrincess(eMonster m) {
  return 
    m == moPrincess || m == moPrincessMoved ||
    m == moPrincessArmed || m == moPrincessArmedMoved;
  }

bool isGolemOrKnight(eMonster m) {
  return 
    m == moGolem  || m == moGolemMoved || 
    m == moKnight || m == moKnightMoved ||
    m == moTameBomberbird  || m == moTameBomberbirdMoved ||
    m == moMouse || m == moMouseMoved ||
    m == moFriendlyGhost ||
    isPrincess(m);
  }

bool isGolemOrKnight(cell *c) { return isGolemOrKnight(c->monst); }

bool isNonliving(eMonster m) {
  return 
    m == moMimic || m == moGolem || m == moGolemMoved ||
    m == moZombie || m == moGhost || m == moShadow || m == moSkeleton ||
    m == moEvilGolem || m == moIllusion || m == moEarthElemental || 
    m == moWaterElemental || m == moDraugr || m == moTerraWarrior ||
    m == moIceGolem || m == moVoidBeast || m == moJiangshi;
  }

bool isMetalBeast(eMonster m) {
  return m == moMetalBeast || m == moMetalBeast2;
  }

bool isStunnable(eMonster m) {
  return m == moPalace || m == moFatGuard || m == moSkeleton || isPrincess(m) ||
    isMetalBeast(m) || m == moTortoise || isDragon(m) ||
    m == moReptile || m == moTerraWarrior || m == moSalamander;
  }

bool hasHitpoints(eMonster m) {
  return m == moPalace || m == moFatGuard || m == moVizier || isPrincess(m) || m == moTerraWarrior;
  }

bool isMountable(eMonster m) {
  return isWorm(m) && m != moTentacleGhost;
  }

bool isFriendly(eMonster m) {
  return isMimic(m) || isGolemOrKnight(m) || m == moIllusion || m == moFriendlyIvy;
  }

bool isFriendlyOrPlayer(eMonster m) {
  return isFriendly(m) || m == moPlayer;
  }

bool isFriendly(cell *c) { 
  if(items[itOrbDomination] && c->monst && c->monst != moTentacleGhost) {
    for(int i=0; i<numplayers(); i++)
      if(sameMonster(c, playerpos(i))) 
        return true;
    }
  return isFriendly(c->monst); 
  }

bool isBug(eMonster m) {
  return m >= moBug0 && m < moBug0+BUGCOLORS;
  }

bool isBug(cell *c) {
  return isBug(c->monst);
  }

bool isFriendlyOrBug(cell *c) { // or killable discord!
  // do not attack the stunned Princess
  if(isPrincess(c->monst) && c->stuntime) return false;
  return isFriendly(c) || isBug(c) || (c->monst && markOrb(itOrbDiscord) && !c->stuntime);
  }

bool isIvy(eMonster m) {
  return m == moIvyRoot || m == moIvyHead || m == moIvyBranch || m == moIvyWait ||
    m == moIvyNext || m == moIvyDead;
  }

bool isIvy(cell *c) {
  return isIvy(c->monst);
  }

bool isMonsterPart(eMonster m) {
  return m == moMutant || (isIvy(m) && m != moIvyRoot) ||
    m == moDragonTail || m == moKrakenT;
  }
  
bool isMutantIvy(eMonster m) {
  return m == moMutant;
  }

bool isAnyIvy(eMonster m) {
  return isIvy(m) || isMutantIvy(m) || m == moFriendlyIvy;
  }

bool isBulletType(eMonster m) { 
  return 
    m == moBullet || m == moFlailBullet || m == moFireball || 
    m == moTongue || m == moAirball || m == moArrowTrap; 
  }

bool isMutantIvy(cell *c) { return isMutantIvy(c->monst); }

bool isDemon(eMonster m) {
  return m == moLesser || m == moLesserM || m == moGreater || m == moGreaterM;
  }

bool isDemon(cell *c) {
  return isDemon(c->monst);
  }

bool isWormHead(eMonster m) {
  return m == moWorm || m == moTentacle || m == moHexSnake || m == moDragonHead;
  }

bool isWorm(eMonster m) {
  return m == moWorm || m == moWormtail || m == moWormwait || 
    m == moTentacle || m == moTentacletail || m == moTentaclewait ||
    m == moTentacleEscaping || m == moTentacleGhost ||
    m == moHexSnake || m == moHexSnakeTail ||
    m == moDragonHead || m == moDragonTail;
  }

bool isWorm(cell *c) {
  return isWorm(c->monst);
  }

bool isWitch(eMonster m) {
  // evil golems don't count
  return m >= moWitch && m < moWitch+NUMWITCH-1;
  }

bool isOnCIsland(cell *c) {
  return (c->wall == waCIsland || c->wall == waCTree || c->wall == waCIsland2);
  }

bool isGhostable(eMonster m) {
  return m && !isFriendly(m) && !isIvy(m) && !isMultitile(m) && !isMutantIvy(m);
  }

bool cellUnstable(cell *c) {
  return (c->land == laMotion && c->wall == waNone) || c->wall == waTrapdoor;
  }

bool cellUnstableOrChasm(cell *c) {
  return 
    (c->land == laMotion && c->wall == waNone) || 
    c->wall == waChasm || c->wall == waTrapdoor;
  }

bool cellHalfvine(cell *c) {
  return c->wall == waVineHalfA || c->wall == waVineHalfB;
  }

bool isWarped(eLand l) {
  return l == laWarpCoast || l == laWarpSea;
  }

bool isElementalShard(eItem i) {
  return 
    i == itFireShard || i == itAirShard || i == itEarthShard || i == itWaterShard;
  }

eMonster elementalOf(eLand l) {
  if(l == laEFire) return moFireElemental;
  if(l == laEWater) return moWaterElemental;
  if(l == laEAir) return moAirElemental;
  if(l == laEEarth) return moEarthElemental;
  return moNone;
  }

eItem localshardof(eLand l) {
  return eItem(itFireShard + (l - laEFire));
  }

int itemclass(eItem i) {
  if(i == 0) return -1;
  if(i < itKey || i == itFernFlower || 
    i == itWine || i == itSilver || i == itEmerald || i == itRoyalJelly || i == itPower ||
    i == itGrimoire || i == itPirate || i == itRedGem || i == itBombEgg ||
    i == itCoast || i == itWhirlpool || i == itPalace || i == itFjord ||
    i == itElemental || i == itZebra || i == itIvory ||
    i == itBounty || i == itFulgurite || i == itMutant || i == itLotus || i == itMutant2 ||
    i == itWindstone || i == itCoral || i == itRose ||
    i == itBabyTortoise || i == itDragon || i == itApple ||
    i == itKraken || i == itBarrow || i == itTrollEgg || i == itTreat ||
    i == itSlime || i == itAmethyst || i == itDodeca ||
    i == itGreenGrass || i == itBull ||
    i == itLavaLily || i == itHunting ||
    i == itBlizzard || i == itTerra
    )
    return IC_TREASURE;
  if(i == itSavedPrincess || i == itStrongWind || i == itWarning)
    return IC_NAI;
  if(i == itKey || i == itOrbYendor || i == itGreenStone || i == itHolyGrail || i == itCompass ||
    isElementalShard(i) || i == itRevolver || i == itInventory) 
    return IC_OTHER;  
  return IC_ORB;
  }
  
bool isAlch(eWall w) {
  return w == waFloorA || w == waFloorB;
  }

/* bool isAlch2(eWall w, bool bubbletoo) {
  return w == waSlime1 || w == waSlime2 || (bubbletoo && w == waBubble);
  } */

/* bool isAlch2(cell *c, bool bubbletoo) {
  return isAlch2(c->wall, bubbletoo);
  } */

bool isAlch(cell *c) { return isAlch(c->wall); }
  
bool isAlchAny(eWall w) {
  return w == waFloorA || w == waFloorB;
  }
  
bool isAlchAny(cell *c) { return isAlchAny(c->wall); }
  
bool realred(eWall w) {
  return w == waRed1 || w == waRed2 || w == waRed3;
  }

int snakelevel(eWall w) {
  if(w == waRed1 || w == waDeadfloor2 || w == waRubble || w == waGargoyleFloor || 
    w == waGargoyleBridge || w == waTempFloor || w == waTempBridge || w == waRoundTable ||
    w == waPetrifiedBridge || w == waMagma) 
    return 1;
  if(w == waRed2) return 2;
  if(w == waRed3) return 3;
  if(w == waTower) return 3;
  return 0;
  }

int snakelevel(cell *c) { return snakelevel(c->wall); }

bool isWall(cell *w) {
  if(w->wall == waNone || isAlchAny(w) || 
    w->wall == waCavefloor || w->wall == waFrozenLake || w->wall == waVineHalfA ||
    w->wall == waVineHalfB || w->wall == waDeadfloor || w->wall == waDeadfloor2 ||
    w->wall == waRubble || w->wall == waGargoyleFloor || w->wall == waGargoyleBridge ||
    w->wall == waTempFloor || w->wall == waTempBridge || w->wall == waPetrifiedBridge ||
    w->wall == waBoat || w->wall == waCIsland || w->wall == waCIsland2 || 
    w->wall == waRed1 || w->wall == waRed2 || w->wall == waRed3 ||
    w->wall == waMineUnknown || w->wall == waMineMine || w->wall == waMineOpen ||
    w->wall == waStrandedBoat || w->wall == waOpenGate || w->wall == waClosePlate ||
    w->wall == waOpenPlate || w->wall == waTrapdoor || w->wall == waGiantRug ||
    w->wall == waLadder || w->wall == waTrunk || w->wall == waSolidBranch ||
    w->wall == waWeakBranch || w->wall == waCanopy || w->wall == waTower ||
    w->wall == waSmallBush || w->wall == waBigBush ||
    w->wall == waReptile || w->wall == waReptileBridge || w->wall == waInvisibleFloor ||
    w->wall == waSlime1 || w->wall == waSlime2 || w->wall == waArrowTrap || w->wall == waMagma) 
    return false;
  if(isWatery(w) || isChasmy(w) || isFire(w)) return false;
  return true;
  }

bool isAngryBird(eMonster m) {
  return m == moEagle || m == moAlbatross || m == moBomberbird || m == moGargoyle ||
    m == moWindCrow || m == moSparrowhawk || 
    m == moVampire || m == moBat || m == moButterfly || m == moGadfly;
  }

bool isBird(eMonster m) {
  return isAngryBird(m) || m == moTameBomberbird || m == moTameBomberbirdMoved;
  }

bool slowMover(eMonster m) {
  return 
    m == moLesser || m == moGreater || isMetalBeast(m) ||
    m == moTortoise || m == moDraugr;
  }

bool normalMover(eMonster m) {
  return
    m == moYeti || m == moRanger || m == moGoblin || m == moTroll || m == moDesertman || 
    m == moMonkey || m == moZombie || m == moNecromancer || m == moCultist || 
    m == moRunDog || m == moPyroCultist || 
    m == moFireFairy || m == moCrystalSage || m == moHedge ||
    m == moVineBeast || m == moLancer || m == moFlailer ||
    m == moMiner || m == moDarkTroll || 
    (playerInPower() && (
      (isWitch(m) && m != moWitchGhost && m != moWitchWinter) || m == moEvilGolem
      )) ||
    m == moRedTroll || 
    m == moPalace || m == moFatGuard || m == moSkeleton || m == moVizier ||
    m == moFjordTroll || m == moStormTroll || m == moForestTroll ||
    m == moFamiliar ||
    m == moFireElemental || m == moOrangeDog ||    
    m == moOutlaw || m == moRedFox || m == moFalsePrincess || m == moRoseLady ||
    m == moRoseBeauty || m == moWolf ||
    m == moResearcher || m == moRagingBull || 
    m == moNarciss || m == moMirrorSpirit || 
    m == moHunterDog || m == moTerraWarrior || m == moJiangshi || 
    m == moLavaWolf || m == moSalamander ||
    m == moHunterGuard || m == moHunterChanging ||
    m == moIceGolem || slowMover(m);
  }

// from-to

bool isGhost(eMonster m) {
  return m == moGhost || m == moTentacleGhost || m == moFriendlyGhost;
  }

bool isGhostMover(eMonster m) {
  return m == moGhost || m == moGreaterShark || m == moTentacleGhost ||
    (playerInPower() && (m == moWitchGhost || m == moWitchWinter));
  }

bool isShark(eMonster m) {
  return m == moShark || m == moCShark || m == moGreaterShark;
  }

bool isSlimeMover(eMonster m) {
  return
    m == moSlime || m == moSeep || m == moVineSpirit || m == moParrot;
  }

bool isDragon(eMonster m) { return m == moDragonHead || m == moDragonTail; }

bool isKraken(eMonster m) { return m == moKrakenH || m == moKrakenT; }

bool isBlowableMonster(eMonster m) {
  return m && !(
    isWorm(m) || isIvy(m) || isMutantIvy(m) || isSlimeMover(m) || 
    m == moGhost || m == moGreaterShark ||
    m == moWaterElemental || m == moWitchGhost || isMimic(m) ||
    isKraken(m)
    );
  }
  
bool isMultitile(eMonster m) {
  return isWorm(m) || isIvy(m) || isMutantIvy(m) || isKraken(m);
  }
  
bool isSlimeMover(cell *c) {
  return isSlimeMover(c->monst);
  }
  
int slimegroup(cell *c) {
  if(c->wall == waCavewall || c->wall == waDeadwall)
    return 1;
  if(isWatery(c))
    return 2;
  if(c->wall == waFloorA)
    return 3;
  if(c->wall == waFloorB)
    return 4;
  if(c->wall == waVinePlant || cellHalfvine(c))
    return 5;
  if(c->wall == waCTree)
    return 6;
  return 0;
  }

bool isLeader(eMonster m) {
  return m == moPirate || m == moCultistLeader || m == moViking || m == moRatling || m == moRatlingAvenger;
  }

bool isFlying(eMonster m) {
  return isBird(m) || isGhost(m) || m == moAirElemental || isDragon(m) || checkOrb(m, itOrbAether);
  }

bool survivesChasm(eMonster m) {
  return isFlying(m);
  }

bool ignoresPlates(eMonster m) {
  return m == moMouse || isFlying(m);
  }

bool itemBurns(eItem it) {
  return it && it != itOrbDragon && it != itOrbFire && it != itDragon && it != itOrbWinter && it != itOrbLava && it != itTreat && it != itLavaLily;
  }

bool attackThruVine(eMonster m) {
  return m == moGhost || m == moVineSpirit || m == moFriendlyGhost || m == moTentacleGhost;
  }

bool attackNonAdjacent(eMonster m) {
  return m == moGhost || m == moFriendlyGhost || m == moTentacleGhost;
  }

bool noHighlight(eMonster m) {
  return
    (m == moIvyWait || m == moIvyNext || m == moIvyDead);
  }

bool isInactiveEnemy(cell *w, eMonster forwho) {
  if(w->monst == moWormtail || w->monst == moWormwait || w->monst == moTentacletail || w->monst == moTentaclewait || w->monst == moHexSnakeTail)
    return true;
  if(w->monst == moLesserM || w->monst == moGreaterM)
    return true;
  if(w->monst == moIvyRoot || w->monst == moIvyWait || w->monst == moIvyNext || w->monst == moIvyDead)
    return true;
  if(w->monst && ((forwho == moPlayer) ? realstuntime(w) : realstuntime(w) > 1) && !isFriendly(w))
    return true;
  return false;
  }

// forpc = true (for PC), false (for golems)
bool isActiveEnemy(cell *w, eMonster forwho) {
  if(((forwho == moPlayer) ? realstuntime(w) : realstuntime(w) > 1))
    return false;
  if(w->monst == moNone) return false;
  if(isFriendly(w)) return false;
  if(isInactiveEnemy(w, forwho)) return false;
  return true;
  }

bool isUnarmed(eMonster m) {
  return 
    m == moMouse || m == moMouseMoved || m == moPrincess || m == moPrincessMoved ||
    m == moCrystalSage || m == moVampire || m == moBat;
  }

bool isArmedEnemy(cell *w, eMonster forwho) {
  return w->monst != moCrystalSage && isActiveEnemy(w, forwho);
  }

bool isHive(eLand l) {
  return l == laHive;
  }
  
bool isIcyWall(cell *c) {
  return c->wall == waNone || c->wall == waIcewall || c->wall == waFrozenLake || c->wall == waLake;
  }

bool eternalFire(cell *c) {
  return c->land == laDryForest || c->land == laPower || c->land == laMinefield ||
    c->land == laEFire || c->land == laElementalWall;
  }
  
bool isCyclic(eLand l) {
  return 
    l == laWhirlpool || l == laTemple || l == laCamelot || l == laClearing ||
    l == laMountain;
  }

bool haveRangedOrb() {
  return 
    items[itOrbPsi] || items[itOrbDragon] || items[itOrbTeleport] ||
    items[itOrbIllusion] || items[itOrbSpace] || items[itOrbAir] ||
    items[itOrbFrog] || items[itOrbSummon] || items[itOrbMatter] ||
    items[itRevolver] || items[itOrbStunning] || items[itStrongWind] ||
    items[itOrbDomination] || items[itOrbNature] || items[itOrbDash] ||
    items[itOrbMorph];
  }

bool isOffensiveOrb(eItem it) {
  return it == itOrbLightning || it == itOrbFlash || it == itOrbThorns ||
    it == itOrbDragon || it == itOrbStunning || 
    it == itOrbFreedom || it == itOrbPsi ||
    it == itOrbSide1 || it == itOrbSide2 || it == itOrbSide3;
  }

bool isRangedOrb(eItem i) {
  return i == itOrbPsi || i == itOrbDragon || i == itOrbTeleport || i == itOrbIllusion ||
    i == itOrbSpace || i == itOrbAir || i == itOrbFrog ||
    i == itOrbSummon || i == itOrbMatter || i == itRevolver || i == itOrbStunning ||
    i == itOrbDomination || i == itOrbNature || i == itOrbDash || i == itOrbMorph;
  }

bool isProtectionOrb(eItem i) {
  return i == itOrbWinter || i == itOrbShield || i == itOrbInvis || i == itOrbShell;
  }

bool isEmpathyOrb(eItem i) {
  return 
    i == itOrbFire || i == itOrbDigging || i == itOrbWinter ||
    i == itOrbUndeath || i == itOrbSpeed || i == itOrbShield ||
    i == itOrbAether || i == itOrbInvis || i == itOrbThorns ||
    i == itOrbWater || i == itOrbStone ||
    i == itOrbSide1 || i == itOrbSide2 || i == itOrbSide3;
  }

bool isUtilityOrb(eItem i) {
  return i == itOrbSpeed || i == itOrbDigging || 
    i == itOrbSafety || i == itOrbTeleport || i == itOrbAether ||
    i == itOrbTime || i == itOrbSpace || 
    i == itOrbSummon || i == itOrbLuck || i == itOrbEnergy ||
    i == itOrbLava;
  }

bool isDirectionalOrb(eItem i) {
  return i == itOrbHorns || i == itOrbBull || i == itOrbSword || i == itOrbSword2;
  }

bool isRevivalOrb(eItem i) {
  return i == itOrbLife || i == itOrbFriend || i == itOrbUndeath;
  }

bool isFriendOrb(eItem i) {
  return i == itOrbLife || i == itOrbFriend || i == itOrbDiscord || i == itOrbLove ||
    i == itOrbEmpathy || i == itOrbUndeath;
  }

bool isFriendlyGhost(eMonster m) {
  return m == moFriendlyGhost || (markEmpathy(itOrbAether) && isFriendly(m));
  }

bool survivesWater(eMonster m) {
  return 
    m == moShark || m == moGreaterShark || m == moCShark || 
    isGhost(m) || m == moWitchGhost || m == moShadow ||
    isBird(m) || m == moWaterElemental || m == moAirElemental ||
    isWorm(m) || isIvy(m) || isDragon(m) || isKraken(m) ||
    m == moMutant || m == moFriendlyIvy || 
    m == moTortoise; // Tortoises and Ivies survive, but don't go through water
  }

// survives Mercury or Sulphur
bool survivesPoison(eMonster m, eWall p) {
  return
    isGhost(m) || m == moWitchGhost || m == moShadow ||
    isBird(m) || m == moAirElemental || isDragon(m);
  }

// flying even if stunned
bool isPermanentFlying(eMonster m) {
  return m == moAirElemental || isGhost(m);
  }

bool survivesFire(eMonster m) {
  return
    isGhost(m) || m == moWitchWinter || m == moWitchGhost ||
    m == moBomberbird || m == moTameBomberbird || m == moTameBomberbirdMoved ||
    (isFriendly(m) && markOrb(itOrbWinter)) || m == moFireElemental ||
    isDragon(m) || m == moShadow;
  }

/* bool survivesMine(eMonster m) {
  return ignoresPlates(m) || isFlying(m);
  } */

bool survivesWall(eMonster m) {
  return isGhost(m);
  }

bool survivesThorns(eMonster m) {
  return isGhost(m) || m == moSkeleton || m == moDraugr;
  }

bool survivesFall(eMonster m) {
  return isBird(m) || m == moAirElemental || m == moSkeleton || isDragon(m) || m == moShadow ||
    isGhost(m);
  }

bool isThorny(eWall w) { return w == waRose; }

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) {
  if(m1 == moPlayer) return markOrb2(orb);
  if(isFriendly(m1)) return markEmpathy2(orb);
  return false;
  }

bool ignoresSmell(eMonster m) {
  return 
    m == moHexSnake || isIvy(m) || isMutantIvy(m) || isGhostMover(m) || isSlimeMover(m) ||
    m == moRoseLady || checkOrb(m, itOrbBeauty) || checkOrb(m, itOrbAether) || checkOrb(m, itOrbShield);
  }

bool isTroll(eMonster m) {
  return 
    m == moTroll || m == moRedTroll || m == moDarkTroll ||
    m == moForestTroll || m == moStormTroll || m == moFjordTroll;
  }

bool isGrave(eWall w) {
  return w == waFreshGrave || w == waAncientGrave;
  }

bool isStandardTree(cell *c) {
  return c->wall == waBigTree || c->wall == waSmallTree;
  }

bool highwall(cell *c) {
  if(c->wall == waGlass) return false;
  if(wmescher && wmspatial && c->wall == waBarrier && c->land == laOceanWall)
    return false;
  // if(wmspatial && isTree(c)) return false;
  if(isGrave(c->wall)) return true;
  if(c->wall == waMirrorWall) return false;
  return winf[c->wall].glyph == '#' || c->wall == waClosedGate;
  }

int chasmgraph(cell *c) {
  if(c->wall == waChasm || c->wall == waInvisibleFloor) return 2;
  if(isChasmy(c)) return 1;
  if(isWateryOrBoat(c)) return 1;
  if(wmescher && c->wall == waBarrier && c->land == laOceanWall) return 1;
  if(c->wall == waReptileBridge) return 1;
  return 0;
  }

bool conegraph(cell *c) {
  return wmescher && wmspatial && (c->wall == waDune || c->wall == waBigTree || c->wall == waSmallTree || c->wall == waCTree || (c->wall == waBarrier && c->land == laOceanWall));
  }

bool isReptile(eWall w) {
  return w == waReptile || w == waReptileBridge; 
  }

bool isBull(eMonster m) {
  return m == moRagingBull || m == moHerdBull || m == moSleepBull;
  }

bool hornStuns(cell *c) {
  eMonster m = c->monst;
  return 
    m == moRagingBull || m == moSleepBull || m == moHerdBull ||
    m == moButterfly || m == moGreater || m == moGreaterM || m == moDraugr ||
    m == moHedge || m == moFlailer || m == moVizier ||
    attackJustStuns(c);
  }

// generate all the world first in the quotient geometry
bool generateAll(eLand l) {
  return 
    l == laIce || l == laDryForest || l == laCocytus || l == laLivefjord ||
    l == laCaves || l == laCA;
  }