public override void MakeChunkData(int chunkX, int chunkZ, Block[, ,] arrayToFill, List<EntitySchema> entityDataToFill)
{
for (int x = 0; x < GameConstants.CHUNK_X_WIDTH; x++)
{
for (int z = 0; z < GameConstants.CHUNK_Z_LENGTH; z++)
{
int height = FindHeight(chunkX * GameConstants.CHUNK_X_WIDTH + x, chunkZ * GameConstants.CHUNK_Z_LENGTH + z);
for (int y = 0; y < GameConstants.CHUNK_Y_HEIGHT; y++)
{
Block block;
if (y <= height)
block = new Block(1);
else
block = new Block(0);
arrayToFill[x, y, z] = block;
}
if (x == 0 && z == 0)
entityDataToFill.Add(new EntitySchema(0, x, height+5, z));
}
}
}
private static void addBlockData(int chunkX, int chunkZ, Block[, ,] arrayToFill)
{
for (int x = 0; x < GameConstants.CHUNK_X_WIDTH; x++)
{
for (int y = 0; y < GameConstants.CHUNK_Y_HEIGHT; y++)
{
for (int z = 0; z < GameConstants.CHUNK_Z_LENGTH; z++)
{
Block block;
//ground everywhere, and pyramid mountains
//that are right on the corners of the chunks
if (y == 0) //uniform ground everywhere, but sometimes ice
{
if ((chunkX & 1) == 0 || (chunkZ & 1) == 0)
block = new Block(1);
else
block = new Block(2);
}
else if (y == 10 && x == 5 && z == 5)
{
block = new Block(1);
}
else if ((chunkX & 1) == 0 && (chunkZ & 1) == 0) //even/even chunk coords, etc.
{
if (z >= x + y + 5)
block = new Block(1);
else
block = new Block(0);
}
else if ((chunkX & 1) == 1 && (chunkZ & 1) == 0)
{
if (z >= (GameConstants.CHUNK_X_WIDTH - x) + y + 5)
block = new Block(1);
else
block = new Block(0);
}
else if ((chunkX & 1) == 0 && (chunkZ & 1) == 1)
{
if ((GameConstants.CHUNK_Z_LENGTH - z - 2) >= x + y + 5)
block = new Block(1);
else
block = new Block(0);
}
else
{
if ((GameConstants.CHUNK_Z_LENGTH - z - 3) >= (GameConstants.CHUNK_X_WIDTH - x - 1) + y + 5)
block = new Block(1);
else
block = new Block(0);
}
arrayToFill[x, y, z] = block;
}
}
}
}
protected override GeometryPrimitive drawingPrimitive(Block block,
bool includeFrontFace, bool includeBackFace,
bool includeTopFace, bool includeBottomFace,
bool includeLeftFace, bool includeRightFace)
{
int flag = BlockHandler.ConvertBoolFlagsToInt(
includeFrontFace, includeBackFace,
includeTopFace, includeBottomFace,
includeLeftFace, includeRightFace);
return primitives[flag];
}
protected override float friction(Block block)
{
switch (block.blockID)
{
case 1:
return 20;
case 2:
return 0.3f;
default:
throw new ArgumentOutOfRangeException();
}
}
protected override bool isPassable(Block block)
{
switch (block.blockID)
{
case 0:
return true;
case 1:
case 2:
return false;
default:
throw new ArgumentOutOfRangeException();
}
}
protected override GeometryPrimitive drawingPrimitive(Block block,
bool includeFrontFace = true, bool includeBackFace = true,
bool includeTopFace = true, bool includeBottomFace = true,
bool includeLeftFace = true, bool includeRightFace = true)
{
switch (block.blockID)
{
case 1:
case 2:
int flags = ConvertBoolFlagsToInt(includeFrontFace, includeBackFace, includeTopFace, includeBottomFace, includeLeftFace, includeRightFace);
return fullSizeBlocks[flags];
default: throw new ArgumentOutOfRangeException();
}
}
/// <summary>
/// Construct a new collider object for a block. Note the specified coordinates are for
/// the block itself (describing its position in space) and not for the thing it's colliding with.
/// </summary>
/// <param name="block"></param>
/// <param name="chunkX"></param>
/// <param name="blockX"></param>
/// <param name="chunkZ"></param>
/// <param name="blockZ"></param>
/// <param name="handler"></param>
public Collider(Block block, int chunkX, int chunkZ, int blockX, int blockY, int blockZ)
{
#if DEBUG
this.collidedObject = block;
#endif
this.colliderChunkX = chunkX;
this.colliderChunkZ = chunkZ;
this.StartingBoundingBox = BlockHandler.PhysicalBlockingBox(block);
Vector3 translation = new Vector3(blockX, blockY, blockZ);
this.StartingBoundingBox = new BoundingBox(
StartingBoundingBox.Min + translation, StartingBoundingBox.Max + translation);
this.Friction = BlockHandler.Friction(block);
this.FrictionVelocity = BlockHandler.FrictionVelocity(block);
}
/// <summary>
/// This takes as input a position and a Ray and a maximum distance, then finds
/// the first Block impacted by the Ray on this map, if any. Return types are
/// through a large number of "out" parameters. Note it will never return the
/// cell which contains the start of the Ray.
///
/// Note: if successful is FALSE, the returned data will be garbage (since it's
/// not easily nullable). So be aware of that.
/// </summary>
/// <param name="chunkX">The chunk(X) position to start the Ray from. This will be
/// set to the chunk(X) position we end on.</param>
/// <param name="chunkZ">The chunk(Z) position to start the Ray from. This will be
/// set to the chunk(Z) position we end on.</param>
/// <param name="lookRay">The Ray to look along.</param>
/// <param name="maxDistance">The maximum distance along the ray that collisions
/// will be considered. Uses the MAX distance.</param>
/// <param name="requireVisible">Whether or not to skip invisible blocks.</param>
/// <param name="requireImpassable">Whether or not to skip passable blocks.</param>
/// <param name="foundBlock">The block that was actually found.</param>
/// <param name="blockPosition">The in-chunk (integer) position of the block that was found.</param>
/// <param name="faceTouched">The face that was first touched by the Ray.</param>
/// <param name="successful">Whether ot not anything was found</param>
public void BlockLookedAt(ref int chunkX, ref int chunkZ, Ray lookRay, int maxDistance,
bool requireVisible, bool requireImpassable,
out Block foundBlock, out Point3 blockPosition,
out Face faceTouched, out bool successful)
{
Map.BlockLookedAt(ref chunkX, ref chunkZ, lookRay, maxDistance, requireVisible, requireImpassable,
out foundBlock, out blockPosition, out faceTouched, out successful);
}
/// <summary>
/// Helper method for "BlockLookedAt." Determines whether or not the Block we found fits the requirements
/// for a successful "find." Specifically, if "RequireImpassible" is true, then it checks for intersection
/// with the passability bounding box, and if "RequireVisible" is true, then it checks for intersection with
/// the visibility bounding box.
/// </summary>
/// <param name="lookRay"></param>
/// <param name="requireVisible"></param>
/// <param name="requireImpassable"></param>
/// <param name="foundBlock"></param>
/// <param name="blockBounds"></param>
/// <returns></returns>
private bool BlockLookedAt_TestCompatibility(Ray lookRay, bool requireVisible, bool requireImpassable,
Block foundBlock, BoundingBox blockBounds)
{
bool compatible = true;
if (requireVisible)
{
if (BlockHandler.IsVisible(foundBlock))
{
BoundingBox visualBox = HelperMethods.TranslateBox(BlockHandler.VisualBoundingBox(foundBlock), blockBounds.Min);
compatible = compatible && visualBox.Intersects(lookRay).HasValue;
}
else
{
compatible = false;
}
}
if (requireImpassable)
{
if (BlockHandler.IsPassable(foundBlock))
{
compatible = false;
}
else
{
BoundingBox blockingBox = HelperMethods.TranslateBox(BlockHandler.PhysicalBlockingBox(foundBlock), blockBounds.Min);
compatible = compatible && blockingBox.Intersects(lookRay).HasValue;
}
}
return compatible;
}
/// <summary> /// Whether or not to draw this block. /// </summary> /// <param name="block"></param> /// <returns></returns> protected abstract bool isVisible(Block block);
protected override Vector3 frictionVelocity(Block block)
{
return Vector3.Zero;
}
public void ChangeBlock(int chunkX, int chunkZ, int blockX, int blockY, int blockZ, Block newBlock)
{
HelperMethods.FixCoordinates(ref chunkX, ref chunkZ, ref blockX, ref blockY, ref blockZ);
lock (CacheLock)
{
if (!IsReady(chunkX, chunkZ))
throw new ArgumentException("Can't modify a chunk we haven't generated!");
CacheData dat = this[chunkX, chunkZ];
dat.Chunk[blockX, blockY, blockZ] = newBlock;
dat.Chunk.RecalculateVisualGeometry();
SaveChunk(chunkX, chunkZ);
}
}
protected abstract int textureIndex(Block block);
/// <summary>
/// Whether or not this block, when drawn,
/// fills the entire allotted space and is
/// completely opaque (and in particular, is
/// visible!). Used for culling drawing
/// data, so be sure to be correct :P
///
/// This particular form is whether it blocks the
/// view to the right; that is, whether the right
/// face is completely opaque and fills the space.
///
/// Default behavior is to return IsVisible;
/// this need only be overridden if this block is
/// partially transparent.
/// </summary>
/// <param name="block"></param>
/// <returns></returns>
protected virtual bool isFullAndOpaqueToTheRight(Block block)
{
return instance.isVisible(block);
}
public static GeometryPrimitive DrawingPrimitive(Block block,
bool includeFrontFace, bool includeBackFace,
bool includeTopFace, bool includeBottomFace,
bool includeLeftFace, bool includeRightFace)
{
return instance.drawingPrimitive(block,
includeFrontFace, includeBackFace, includeTopFace,
includeBottomFace, includeLeftFace, includeRightFace);
}
/// <summary>
/// The model for drawing this block. Not required to
/// be implemented when IsVisible is false.
///
/// The optional parameters refer to possibly excluding occluded
/// faces. Failure to take these into account will hurt performance
/// significantly.
/// </summary>
/// <param name="block"></param>
/// <returns></returns>
protected abstract GeometryPrimitive drawingPrimitive(Block block,
bool includeFrontFace, bool includeBackFace,
bool includeTopFace, bool includeBottomFace,
bool includeLeftFace, bool includeRightFace);
public static BoundingBox VisualBoundingBox(Block block) { return instance.visualBoundingBox(block); }
/// <summary>
/// The boundingbox which this square actually blocks
/// passage through. This method is only valid when IsVisible
/// is true.
/// </summary>
/// <param name="block"></param>
/// <returns></returns>
protected BoundingBox visualBoundingBox(Block block)
{
return new BoundingBox(Vector3.Zero, Vector3.One);
}
public static bool IsVisible(Block block) { return instance.isVisible(block); }
/// <summary>
/// This takes as input a maximum distance, then finds the first Block impacted
/// by the Camera's Forward Ray on this map, if any. Return types are through
/// a large number of "out" parameters. Note it will never return the
/// cell which contains the start of the Ray.
///
/// This is just a convenient default parameter set for the other BlockLookedAt
/// method. The effect and output are the same as filling in the arguments with
/// information from Camera.
///
/// Note: if successful is FALSE, the returned data will be garbage (since it's
/// not easily nullable). So be aware of that.
/// </summary>
/// <param name="maxDistance">The maximum distance along the ray that collisions
/// will be considered. Uses the MAX-norm.</param>
/// <param name="requireVisible">Whether or not to skip invisible blocks.</param>
/// <param name="requireImpassable">Whether or not to skip passable blocks.</param>
/// <param name="foundBlock">The block that was actually found.</param>
/// <param name="chunkX">The chunk(X) position we end on.</param>
/// <param name="chunkZ">The chunk(Z) position we end on.</param>
/// <param name="blockPosition">The in-chunk (integer) position of the block that was found.</param>
/// <param name="faceTouched">The face that was first touched by the Ray.</param>
/// <param name="successful">Whether ot not anything was found</param>
public void BlockLookedAt(int maxDistance, bool requireVisible, bool requireImpassable,
out Block foundBlock, out int chunkX, out int chunkZ, out Point3 blockPosition,
out Face faceTouched, out bool successful)
{
chunkX = Camera.ChunkX;
chunkZ = Camera.ChunkZ;
Map.BlockLookedAt(ref chunkX, ref chunkZ, Camera.ForwardRay, maxDistance,
requireVisible, requireImpassable,
out foundBlock, out blockPosition, out faceTouched,
out successful);
}
public override void MakeChunkData(int chunkX, int chunkZ, Block[, ,] arrayToFill, List<EntitySchema> entityDataToFill)
{
addEntityData(entityDataToFill);
addBlockData(chunkX, chunkZ, arrayToFill);
}
public static bool IsFullAndOpaqueToTheRight(Block block) { return instance.isFullAndOpaqueToTheRight(block); }
public static Vector3 FrictionVelocity(Block block) { return instance.frictionVelocity(block); }
public static float Friction(Block block) { return instance.friction(block); }
protected override int textureIndex(Block block)
{
switch (block.blockID)
{
case 1:
return 0;
case 2:
return 1;
default:
throw new NotImplementedException();
}
}
public void ChangeBlock(int chunkX, int chunkZ, int blockX, int blockY, int blockZ, Block newBlock)
{
Cache.ChangeBlock(chunkX, chunkZ, blockX, blockY, blockZ, newBlock);
}
protected abstract Vector3 frictionVelocity(Block block);
/// <summary> /// This is where you get to do your procedural generation! /// By whatever means you deem appropriate, construct a chunk /// of cubes at the designated "chunk coordinates." /// /// FUN FACT: you need to include a "buffer block" on each lateral /// (that is, x or z) side. It is important that this is the same /// block as would actually be generated by the appropriate other call! /// </summary> /// <param name="chunkX"></param> /// <param name="chunkZ"></param> /// <param name="chunkBlocksToFill">The array to fill with block data</param> /// <returns></returns> public abstract void MakeChunkData(int chunkX, int chunkZ, Block[, ,] chunkBlocksToFill, List<EntitySchema> entityListToFill);
/// <summary>
/// This takes as input a position and a Ray and a maximum distance, then finds
/// the first Block impacted by the Ray on this map, if any. Return types are
/// through a large number of "out" parameters. Note it will never return the
/// cell which contains the start of the Ray.
///
/// Note: if successful is FALSE, the returned data will be garbage (since it's
/// not easily nullable). So be aware of that.
/// </summary>
/// <param name="chunkX">The chunk(X) position to start the Ray from. This will be
/// set to the chunk(X) position we end on.</param>
/// <param name="chunkZ">The chunk(Z) position to start the Ray from. This will be
/// set to the chunk(Z) position we end on.</param>
/// <param name="lookRay">The Ray to look along.</param>
/// <param name="maxDistance">The maximum distance along the ray that collisions
/// will be considered. Uses the MAX distance.</param>
/// <param name="requireVisible">Whether or not to skip invisible blocks.</param>
/// <param name="requireImpassable">Whether or not to skip passable blocks.</param>
/// <param name="foundBlock">The block that was actually found.</param>
/// <param name="blockPosition">The in-chunk (integer) position of the block that was found.</param>
/// <param name="faceTouched">The face that was first touched by the Ray.</param>
/// <param name="successful">Whether ot not anything was found</param>
public void BlockLookedAt(ref int chunkX, ref int chunkZ, Ray lookRay, int maxDistance,
bool requireVisible, bool requireImpassable,
out Block foundBlock, out Point3 blockPosition,
out Face faceTouched, out bool successful)
{
if (lookRay.Position.Y < 0 || lookRay.Position.Y >= GameConstants.CHUNK_Y_HEIGHT)
throw new ArgumentException("Can't cast rays from offscreen!");
successful = false;
blockPosition = Point3.RoundDown(lookRay.Position);
BoundingBox blockBounds = new BoundingBox(
new Vector3(blockPosition.X, blockPosition.Y, blockPosition.Z),
new Vector3(blockPosition.X + 1, blockPosition.Y + 1, blockPosition.Z + 1));
if (!blockBounds.Intersects(lookRay).HasValue)
throw new NotImplementedException();
int xChange = Numerical.sign(lookRay.Direction.X);
int yChange = Numerical.sign(lookRay.Direction.Y);
int zChange = Numerical.sign(lookRay.Direction.Z);
faceTouched = Face.FRONT;
foundBlock = new Block();
while (blockPosition.Y >= 0 && blockPosition.Y < GameConstants.CHUNK_Y_HEIGHT)
{
bool canMoveX = (xChange != 0);
bool canMoveY = (yChange != 0 && (blockPosition.Y + yChange >= 0 && blockPosition.Y + yChange < GameConstants.CHUNK_Y_HEIGHT));
bool canMoveZ = (zChange != 0);
bool hitX = false;
bool hitY = false;
bool hitZ = false;
BoundingBox oldBox = blockBounds;
int hits = 0;
#region Move and count hits...
if (canMoveX)
{
BoundingBox box = new BoundingBox(oldBox.Min + new Vector3(xChange, 0, 0), oldBox.Max + new Vector3(xChange, 0, 0));
float? result = box.Intersects(lookRay);
hitX = result.HasValue;
if (hitX)
{
hits++;
blockPosition.X += xChange;
faceTouched = (xChange < 0 ? Face.RIGHT : Face.LEFT);
blockBounds = box;
if (Math.Abs(blockPosition.X - lookRay.Position.X) > maxDistance) return;
}
}
if (canMoveY)
{
BoundingBox box = new BoundingBox(oldBox.Min + new Vector3(0, yChange, 0), oldBox.Max + new Vector3(0, yChange, 0));
float? result = box.Intersects(lookRay);
hitY = result.HasValue;
if (hitY)
{
hits++;
blockPosition.Y += yChange;
faceTouched = (yChange < 0 ? Face.TOP : Face.BOTTOM);
blockBounds = box;
if (Math.Abs(blockPosition.Y - lookRay.Position.Y) > maxDistance) return;
}
}
if (canMoveZ)
{
BoundingBox box = new BoundingBox(oldBox.Min + new Vector3(0, 0, zChange), oldBox.Max + new Vector3(0, 0, zChange));
float? result = box.Intersects(lookRay);
hitZ = result.HasValue;
if (hitZ)
{
hits++;
blockPosition.Z += zChange;
faceTouched = (zChange < 0 ? Face.BACK : Face.FRONT);
blockBounds = box;
if (Math.Abs(blockPosition.Z - lookRay.Position.Z) > maxDistance) return;
}
}
#endregion
//We either hit a corner (yielding multiple matches) or ran off
//the edge of the world. In either case, I'm OK with "no result."
if (hits != 1)
return;
foundBlock = GetHighPriorityBlock(chunkX, chunkZ, blockPosition.X, blockPosition.Y, blockPosition.Z);
if (BlockLookedAt_TestCompatibility(lookRay, requireVisible, requireImpassable, foundBlock, blockBounds))
{
successful = true;
HelperMethods.FixCoordinates(ref chunkX, ref chunkZ, ref blockPosition);
return;
}
}
}
public static int TextureIndex(Block block) { return instance.textureIndex(block); }
