public static Direction DetermineDirectionCautious(Monster m, World w)
{
Direction result;
if (IsCautious(m, w))
{
bool alterDirection = m.Direction != Direction.None && (MonsterRandom.Next(256) & 3) == 0;
if (alterDirection)
result = AlterDirection(m.Direction);
else
{
var d = DetermineDirectionTowardsPlayer(m, w);
result = (d == Direction.None) ? RandomDirection() : d.Reversed();
}
}
else
{
if ((MonsterRandom.Next(256) & 7) == 0)
{
result = RandomDirection();
}
else
{
result = DetermineDirectionTowardsPlayer(m, w);
if (result == Direction.None)
result = RandomDirection();
}
}
return result;
}
public static Direction DetermineDirectionSemiAggressive(Monster m, World w)
{
bool makeAggressiveMove = (MonsterRandom.Next(256) & 1) == 0;
if (m.ChangeRooms != ChangeRooms.FollowsPlayer)
makeAggressiveMove &= IsPlayerInSameRoomAsMonster(m, w);
var shouldFollowPlayer = makeAggressiveMove && IsPlayerInSight(m, w);
var result = shouldFollowPlayer ? DetermineDirectionTowardsPlayer(m, w) : RandomDirection();
return result;
}
public static Direction DetermineDirectionRolling(Monster m, World w)
{
if (m.Direction == Direction.None)
return RandomDirection();
bool changeDirection = (MonsterRandom.Next(256) & 7) == 0;
var result = changeDirection ? AlterDirection(m.Direction) : DetermineDirectionStandardPatrolling(m, w);
return result;
}
public static Direction DetermineDirectionStandardPatrolling(Monster m, World w)
{
if (m.Direction == Direction.None)
throw new InvalidOperationException("Direction must be set for patrolling.");
TilePos tp = m.TilePosition;
TilePos pp = tp.GetPositionAfterOneMove(m.Direction);
bool isCurrentlyMovingTowardsFreeSpace = w.CanTileBeOccupied(pp, true);
Vector2 potentiallyMovingTowards = pp.ToPosition();
bool isInSameRoom = IsInSameRoom(m.Position, potentiallyMovingTowards);
bool canContinueMovingInTheSameDirection = isCurrentlyMovingTowardsFreeSpace && isInSameRoom;
var result = canContinueMovingInTheSameDirection ? m.Direction : m.Direction.Reversed();
System.Diagnostics.Trace.WriteLine(string.Format("{0} {1} {2} {3} {4}", tp, pp, isCurrentlyMovingTowardsFreeSpace, isInSameRoom, result));
return result;
}
public static Direction DetermineDirectionFullPursuit(Monster m, World w)
{
Direction result = DetermineDirectionTowardsPlayer(m, w);
if (result == Direction.None)
result = RandomDirection();
result = UpdateDirectionWhereMovementBlocked(m, w, result);
Vector2 potentiallyMovingTowards = m.TilePosition.GetPositionAfterOneMove(result).ToPosition();
Vector2 diff = (potentiallyMovingTowards - w.Player.Position) / Tile.Size;
float tilesToPlayer = Math.Min(Math.Abs(diff.X), Math.Abs(diff.Y));
if (tilesToPlayer <= 2)
result = AlterDirection(result);
return result;
}
public MovingItemAndMovingItemInteraction(World world, MovingItem movingItem1, MovingItem movingItem2)
{
if (world == null)
throw new ArgumentNullException("world");
if (movingItem1 == null)
throw new ArgumentNullException("movingItem1");
if (movingItem2 == null)
throw new ArgumentNullException("movingItem2");
if (movingItem1 is Shot)
throw new ArgumentOutOfRangeException("movingItem1");
if (movingItem2 is Shot)
throw new ArgumentOutOfRangeException("movingItem2");
this._world = world;
var items = new[] {movingItem1, movingItem2};
this._player = items.OfType<Player>().SingleOrDefault();
this._boulder = items.OfType<Boulder>().SingleOrDefault();
this._mine = items.OfType<Mine>().SingleOrDefault();
this._monster1 = items.OfType<Monster.Monster>().FirstOrDefault();
this._monster2 = items.OfType<Monster.Monster>().Skip(1).FirstOrDefault();
this._moveableObject = items.FirstOrDefault(item => item.Solidity == ObjectSolidity.Moveable);
this._insubstantialObject = items.FirstOrDefault(item => item.Solidity == ObjectSolidity.Insubstantial);
}
private static bool ShotHitsMonster(World world, Shot shot, Monster.Monster monster)
{
if (!monster.IsActive)
monster.IsActive = true;
if (monster.Mobility == MonsterMobility.Patrolling)
monster.Mobility = MonsterMobility.Placid;
var standardShot = shot as StandardShot;
if (standardShot != null && monster.ShotsBounceOff)
{
if (!standardShot.HasRebounded)
standardShot.Reverse();
return false;
}
var score = ((Math.Min(shot.Energy, monster.Energy) >> 1) + 1)*10;
world.IncreaseScore(score);
monster.ReduceEnergy(shot.Energy);
if (monster.IsAlive())
{
var sound = monster.IsEgg ? GameSound.PlayerShootsAndInjuresEgg : GameSound.PlayerShootsAndInjuresMonster;
world.Game.SoundPlayer.Play(sound);
}
world.ConvertShotToBang(shot);
return true;
}
public void AddMonster(Monster.Monster m)
{
this.GameObjects.Add(m);
}
private static Direction DetermineDirectionTowardsPlayer(Monster m, World w)
{
Vector2 diff = (m.Position - w.Player.Position);
double hMove = MonsterRandom.NextDouble() * Math.Abs(diff.X);
double vMove = MonsterRandom.NextDouble() * Math.Abs(diff.Y);
Direction result;
if (hMove > vMove)
{
result = diff.X > 0 ? Direction.Left : Direction.Right;
}
else
{
result = diff.Y > 0 ? Direction.Up : Direction.Down;
}
return result;
}
public static Direction UpdateDirectionWhereMovementBlocked(Monster m, World w, Direction d)
{
Direction intendedDirection = d;
TilePos tp = m.TilePosition;
do
{
TilePos potentiallyMovingTowardsTile = tp.GetPositionAfterOneMove(d);
Vector2 potentiallyMovingTowards = potentiallyMovingTowardsTile.ToPosition();
if (m.ChangeRooms == ChangeRooms.StaysWithinRoom && !IsInSameRoom(m.Position, potentiallyMovingTowards))
{
d = GetNextDirection(d);
continue;
}
if (w.CanTileBeOccupied(potentiallyMovingTowardsTile, true))
{
return d;
}
d = GetNextDirection(d);
} while (d != intendedDirection);
return Direction.None;
}
public static Direction RandomDirection(Monster m, World w)
{
var result = RandomDirection();
return result;
}
public static bool IsPlayerInSight(Monster m, World w)
{
Vector2 diff = (m.Position - w.Player.Position) / Tile.Size;
bool result;
if (Math.Abs(diff.X) >= Math.Abs(diff.Y))
{
float tilesDistance = Math.Abs(diff.X) / Tile.Width;
result = tilesDistance <= World.WindowSizeX * 2;
}
else
{
float tilesDistance = Math.Abs(diff.Y) / Tile.Height;
result = tilesDistance <= World.WindowSizeY * 2;
}
return result;
}
public static bool IsPlayerInSameRoomAsMonster(Monster m, World w)
{
Player p = w.Player;
if (!p.IsExtant)
return false;
var result = IsInSameRoom(p.Position, m.Position);
return result;
}
private static Direction DetermineDirectionAggressive(Monster m, World w)
{
TilePos tp = m.TilePosition;
bool isCurrentlyMovingTowardsFreeSpace;
if (m.Direction == Direction.None)
isCurrentlyMovingTowardsFreeSpace = false;
else
{
TilePos pp = tp.GetPositionAfterOneMove(m.Direction);
isCurrentlyMovingTowardsFreeSpace = w.CanTileBeOccupied(pp, true);
if (isCurrentlyMovingTowardsFreeSpace)
{
Vector2 newPos = pp.ToPosition();
if (!MonsterMovement.IsInSameRoom(m.Position, newPos) && MonsterRandom.Next(4) != 0)
isCurrentlyMovingTowardsFreeSpace = false;
}
}
Direction newDirection = Direction.None;
if (w.Player != null)
{
TilePos playerPosition = w.Player.TilePosition;
int yDiff = tp.Y - playerPosition.Y;
int xDiff = tp.X - playerPosition.X;
if (xDiff > 16 || yDiff > 16)
{
// player is out of sight
}
else if (m.Direction == Direction.Left || m.Direction == Direction.Right)
{
// Check if travelling on same row as player
if (yDiff == 0 && ShouldMakeMove())
{
// Move aside
newDirection = MonsterRandom.Next(2) == 0 ? Direction.Up : Direction.Down;
}
else if ((m.Direction == Direction.Left && xDiff <= -5) || (m.Direction == Direction.Right && xDiff >= 5))
{
newDirection = yDiff > 0 ? Direction.Up : Direction.Down;
}
}
else if (m.Direction == Direction.Up || m.Direction == Direction.Down)
{
if (xDiff == 0 && ShouldMakeMove())
{
// Move aside
newDirection = MonsterRandom.Next(2) == 0 ? Direction.Left : Direction.Right;
}
else if ((m.Direction == Direction.Up && yDiff <= -5) || (m.Direction == Direction.Down && yDiff >= 5))
{
newDirection = xDiff > 0 ? Direction.Left : Direction.Right;
}
}
if (newDirection != Direction.None)
{
TilePos pp = tp.GetPositionAfterOneMove(newDirection);
if (!w.CanTileBeOccupied(pp, true))
newDirection = Direction.None;
}
}
if (newDirection == Direction.None)
{
if (m.Direction == Direction.None)
{
newDirection = MonsterMovement.RandomDirection(m, w);
}
else if (!isCurrentlyMovingTowardsFreeSpace)
{
// tend to bounce backwards
newDirection = MonsterRandom.Next(5) == 0 ? MonsterMovement.GetRandomPerpendicularDirection(m.Direction) : m.Direction.Reversed();
}
else if (MonsterRandom.Next(16) == 0)
{
newDirection = MonsterMovement.GetRandomPerpendicularDirection(m.Direction);
}
else
{
newDirection = m.Direction;
}
}
return newDirection;
}
private static bool IsCautious(Monster m, World w)
{
int compareTo = m.Energy << 2;
bool result = w.Player.Energy > compareTo;
return result;
}
private static Direction DetermineDirectionAggressive(Monster m, World w, Func<bool> shouldMakeAnAggressiveMove)
{
var p = w.Player;
if (p == null || !p.IsExtant)
{
return MonsterMovement.DetermineDirectionRolling(m, w);
}
TilePos tp = m.TilePosition;
/* bool isCurrentlyMovingTowardsFreeSpace;
if (this.Direction == Direction.None)
isCurrentlyMovingTowardsFreeSpace = false;
else
{
TilePos pp = TilePos.GetPositionAfterOneMove(tp, this.Direction);
isCurrentlyMovingTowardsFreeSpace = this._world.IsTileUnoccupied(pp, true);
if (isCurrentlyMovingTowardsFreeSpace)
{
Vector2 newPos = World.GetBounds(pp).GetCentre();
if (!IsInSameRoom(this.Position, newPos) && MonsterRandom.Next(4) != 0)
isCurrentlyMovingTowardsFreeSpace = false;
}
}
*/
Direction newDirection = Direction.None;
TilePos playerPosition = p.TilePosition;
int yDiff = tp.Y - playerPosition.Y;
int xDiff = tp.X - playerPosition.X;
if (m.Direction == Direction.Left || m.Direction == Direction.Right)
{
if (Math.Abs(tp.X - playerPosition.X) == 1 && Math.Abs(yDiff) > 3 && Math.Abs(yDiff) <= 16 && shouldMakeAnAggressiveMove())
{
newDirection = yDiff > 0 ? Direction.Up : Direction.Down;
}
else if ((tp.X - playerPosition.X) == 0 && Math.Abs(yDiff) <= 3 && shouldMakeAnAggressiveMove())
{
newDirection = yDiff > 0 ? Direction.Up : Direction.Down;
}
}
else if (m.Direction == Direction.Up || m.Direction == Direction.Down)
{
if (Math.Abs(tp.Y - playerPosition.Y) == 1 && Math.Abs(xDiff) > 3 && Math.Abs(xDiff) <= 16 && shouldMakeAnAggressiveMove())
{
newDirection = xDiff > 0 ? Direction.Left : Direction.Right;
}
else if ((tp.Y - playerPosition.Y) == 0 && Math.Abs(xDiff) <= 3 && shouldMakeAnAggressiveMove())
{
newDirection = xDiff > 0 ? Direction.Left : Direction.Right;
}
}
if (newDirection != Direction.None)
{
TilePos pp = tp.GetPositionAfterOneMove(newDirection);
if (w.CanTileBeOccupied(pp, true))
{
return newDirection;
}
}
return MonsterMovement.DetermineDirectionRolling(m, w);
}
public void AddDiamondDemon(Monster.Monster m)
{
var dd = new DiamondDemon(this, m.Position, 30)
{
Mobility = MonsterMobility.Aggressive,
LaysEggs = true,
ChangeRooms = ChangeRooms.FollowsPlayer,
MonsterShootBehaviour = MonsterShootBehaviour.ShootsImmediately
};
this.GameObjects.Add(dd);
}