public Particle CreateParticle()
{
Particle particle = null;
if (particlesPool.Count() > 0)
{
particle = particlesPool[0];
particlesPool.RemoveAt(0);
particle.Position = Vector3.Zero;
particle.Direction = Vector3.Zero;
particle.Force = Vector3.Zero;
}
else
{
particle = new Particle();
}
// Create mesh for the particle
InstancedMesh <VertexData> .Instance instance = instancedMesh.AppendInstance(Matrix.Identity);
particle.Instance = instance;
particles.Add(particle);
return(particle);
}
public void AddBlock(String blockType, Matrix transform)
{
// Obtain instanced mesh for the block
InstancedMesh instancedMesh = blockInstancedMeshes[blockType];
int instanceIndex = instancedMesh.AppendInstance(transform);
}
public void AddBlock(String blockType, int x, int y, int z)
{
// Obtain compound child for the block
int index = x + y * GAME_FIELD_SIZE + z * GAME_FIELD_SIZE * GAME_FIELD_SIZE;
CompoundChild child = compoundBody.CollisionInformation.Children[index];
child.CollisionInformation.CollisionRules.Group = null;
// Obtain instanced mesh for the block
InstancedMesh instancedMesh = blockInstancedMeshes[blockType];
// Create instance of the block in instanced mesh
Matrix transform = child.Entry.LocalTransform.Matrix; //Matrix.CreateTranslation(x + BLOCK_SIZE * 0.5f, y + BLOCK_SIZE * 0.5f, z + BLOCK_SIZE * 0.5f);
int instanceIndex = instancedMesh.AppendInstance(transform);
// Store new instance to the list
Block block = new Block(instancedMesh, instanceIndex, child);
blocks.Add(block);
}
public void ChangleBlockType(Block block, String newBlockTypeName)
{
// Obtain new block type for the block
BlockType newBlockType = null;
try
{
newBlockType = blockTypes[newBlockTypeName];
}
catch (KeyNotFoundException exc)
{
// New block type does not exists in the game, try to load it
newBlockType = LoadBlockType(newBlockTypeName, Blocks.Count);
}
if (newBlockType == null)
{
// If not able to load new block type, just do nothing.
// TODO: handle this error properly
return;
}
// Remove graphical representation of the block
String blockTypeName = block.BlockType.Name;
InstancedMesh <VertexData> instancedMesh = blockInstancedMeshes[blockTypeName];
instancedMesh.RemoveInstance(block.Instance);
// Add new graphical representation of the block
InstancedMesh <VertexData> newInstancedMesh = blockInstancedMeshes[newBlockTypeName];
Matrix localPosTransform = Matrix.CreateTranslation(compoundBody.CollisionInformation.LocalPosition);
InstancedMesh <VertexData> .Instance instance = newInstancedMesh.AppendInstance(Matrix.CreateScale(block.Scale) * block.Entity.Entry.LocalTransform.Matrix * localPosTransform);
// Make changes in block instance
block.ChangeBlockType(newBlockType, instance);
}
public void LoadLevel(String fileName)
{
// Load level data
GameLevelContent levelData = Game.Content.Load <GameLevelContent>(fileName);
int blocksCount = levelData.BlocksCount();
// List of blocks chapes for compound body
List <CompoundShapeEntry> shapes = new List <CompoundShapeEntry>();
// Create block groups and block physics
foreach (BlockGroupData blockGroup in levelData.BlockGroups)
{
// Create block group
LoadBlockType(blockGroup.BlockTypeName, blocksCount);
// Create physical representation of blocks in this group
Vector3 scale;
Quaternion rotation;
Vector3 translation;
foreach (BlockData blockData in blockGroup.Blocks)
{
// Extract size, position and orientation values from block data transform
blockData.Transform.Decompose(out scale, out rotation, out translation);
blockData.Scale = scale;
// Create physical shape of the block to be part of compound body of blocks
BoxShape blockShape = new BoxShape(scale.X, scale.Y, scale.Z);
// Create compound shape entry for compund body of blocks
CompoundShapeEntry entry = new CompoundShapeEntry(blockShape, new RigidTransform(translation, rotation));
shapes.Add(entry);
}
}
// Create compound body
compoundBody = new CompoundBody(shapes, COMPOUND_BODY_MASS);
compoundBody.PositionUpdateMode = BEPUphysics.PositionUpdating.PositionUpdateMode.Continuous;
compoundBody.AngularDamping = COMPOUND_BODY_ANGULAR_DAMPING;
// Compound body has Position and LocalPosition (in Collision information)
// Position property is position of mass center in global space - it is calculated automatically.
// LocalPosition property is position of geometry of the body in its local space.
// So in order to create compound body which is rotated around desired position ((0,0,0) for now)
// We should switch Position and LocalPosition properties of our compound body.
compoundBody.CollisionInformation.LocalPosition = compoundBody.Position;
compoundBody.Position = Vector3.Zero;
// Add constraint prevents compound body from moving
constraint = new MaximumLinearSpeedConstraint(compoundBody, 0.0f);
// Create collision group for removed blocks
removedBlocksGroup = new CollisionGroup();
// Create blocks
int childCollidableIndex = 0;
foreach (BlockGroupData blockGroup in levelData.BlockGroups)
{
Matrix localPosTransform = Matrix.CreateTranslation(compoundBody.CollisionInformation.LocalPosition);
foreach (BlockData blockData in blockGroup.Blocks)
{
// Obtain block type and instanced mesh for the block
BlockType blockType = blockTypes[blockGroup.BlockTypeName];
InstancedMesh <VertexData> instancedMesh = blockInstancedMeshes[blockGroup.BlockTypeName];
// Obtain physics body (a part of compound body) for the block
CompoundChild child = compoundBody.CollisionInformation.Children[childCollidableIndex];
// Create instance of the block in instanced mesh
InstancedMesh <VertexData> .Instance instance = instancedMesh.AppendInstance(Matrix.CreateScale(blockData.Scale) * child.Entry.LocalTransform.Matrix * localPosTransform);
// Store new block instance to the list
Block block = new Block(blockType, instance, child);
blocks.Add(block);
block.Scale = blockData.Scale;
childCollidableIndex++;
}
}
// Add compound body and its constraints to physics space
space.Add(compoundBody);
space.Add(constraint);
}