Hey all, back again with another question.
I have a 'custom' plane (created out of 'tiles'), and would like to construct it with certain tiles omitted.
Heres the code I am using, the plane is col and row based; and ideally I would like to have the edges that connect the tiles (that should be omitted) not created. I am kind of at a loss though, I also had the idea to use a quad on top with an alpha state that would let me see 'through' the hole; however that hides everything, I want to be able to 'see' through it…
Any hints or suggestions are welcome, I think I know how to do it; but my approach would require some testing to see if its on the edge or not (read lots of if statements). Basically I am seeing if anyone has a clever approach that I may have overlooked…
private void buildFloor() {
final Vector3f[] verticies = new Vector3f[ ( length + 1 ) * ( width + 1 ) ];
final Vector3f[] normals = new Vector3f[ ( length + 1 ) * ( width + 1 ) ];
final Vector2f[] textures = new Vector2f[ ( length + 1 ) * ( width + 1 ) ];
for( int row = 0; row < length + 1; ++row ){
for( int col = 0; col < width + 1; ++col ){
// if( !skipColsAndRows[row][col] ){
int index = col + ( row * ( width + 1 ) );
verticies[index] = new Vector3f( col * tileSize, 0, row * tileSize );
normals[index] = new Vector3f( 0, 1, 0 );
textures[index] = new Vector2f( col / ( (float) width ), row / ( (float) length ) );
// }
}
}
final FloatBuffer vertexBuffer = BufferUtils.createFloatBuffer( verticies );
final FloatBuffer normalBuffer = BufferUtils.createFloatBuffer( normals );
final FloatBuffer textureBuffer = BufferUtils.createFloatBuffer( textures );
final IntBuffer indices = BufferUtils.createIntBuffer( getIndices() );
mesh = new TriMesh( "Floor", vertexBuffer, normalBuffer, null, textureBuffer, indices );
attachChild( mesh );
mesh.setModelBound( new BoundingBox() );
mesh.updateModelBound();
setIsCollidable( true );
// Center it at (0,0,0)
mesh.getLocalTranslation().subtractLocal( width * tileSize / 2, 0, length * tileSize / 2 );
mesh.updateGeometricState( 0, true );
}
private int[] getIndices() {
int numberOfVerts = ( length * width * 2 * 3 ); // 2 Tris/cell, 3 Verts/Tri
int[] indices = new int[ numberOfVerts ]; //
for( int row = 0; row < length; ++row ){
for( int col = 0; col < width; ++col ){
int index = ( col + ( row * width ) ) * 6;
// if( !skipColsAndRows[row][col] ){
// Make 2 triangles
indices[index] = col + ( row * ( width + 1 ) );
indices[index + 1] = col + ( ( row + 1 ) * ( width + 1 ) );
indices[index + 2] = col + 1 + ( row * ( width + 1 ) );
indices[index + 3] = indices[index + 2];
indices[index + 4] = indices[index + 1];
indices[index + 5] = indices[index + 1] + 1;
// }
//
// else{
// indices[index] = indices[index-6];
// indices[index + 1] = indices[index-5];
// indices[index + 2] = indices[index-4];
//
// indices[index + 3] = indices[index-3];
// indices[index + 4] = indices[index-2];
// indices[index + 5] = indices[index-1];
// }
}
}
return indices;
}