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void BlockMesh::regenerate(AABB aabb, std::vector<int> yCoords) {
if(m_vertices.vboExists()) m_vertices.deleteVBO();
if(m_normals.vboExists()) m_normals.deleteVBO();
if(m_colors.vboExists()) m_colors.deleteVBO();
AM::Mesh<glm::vec3> f_vertices;
AM::Mesh<glm::vec3> f_normals;
AM::Mesh<glm::vec4> f_color;
for(int yi = 0; yi < yCoords.size(); yi++) {
int y = yCoords.at(yi);
for(int x = aabb.getFirst().x; x < aabb.getSecond().x; x++){
for (int z = aabb.getFirst().z; z < aabb.getSecond().z; z++) {
glm::vec3 currentPosition(x, y, z);
if(!m_blockSource.blockExists(currentPosition)){
continue;
}
Block currentBlock = m_blockSource.getBlock(currentPosition);
if(!currentBlock.exists()){
continue;
}
//Is true of specified side needs a face
bool front = true, right = true, back = true, left = true, top = true, bottom = true;
front = !m_blockSource.blockExists(currentPosition + glm::vec3(0, 0, -1)) || !m_blockSource.getBlock(currentPosition + glm::vec3(0, 0, -1)).isSolid();
right = !m_blockSource.blockExists(currentPosition + glm::vec3(1, 0, 0)) || !m_blockSource.getBlock(currentPosition + glm::vec3(1, 0, 0)).isSolid();
back = !m_blockSource.blockExists(currentPosition + glm::vec3(0, 0, 1)) || !m_blockSource.getBlock(currentPosition + glm::vec3(0, 0, 1)).isSolid();
left = !m_blockSource.blockExists(currentPosition + glm::vec3(-1, 0, 0)) || !m_blockSource.getBlock(currentPosition + glm::vec3(-1, 0, 0)).isSolid();
top = !m_blockSource.blockExists(currentPosition + glm::vec3(0, 1, 0)) || !m_blockSource.getBlock(currentPosition + glm::vec3(0, 1, 0)).isSolid();
bottom = !m_blockSource.blockExists(currentPosition + glm::vec3(0, -1, 0)) || !m_blockSource.getBlock(currentPosition + glm::vec3(0, -1, 0)).isSolid();
if(front){
std::vector<glm::vec3> vertices = translateVertices(AM::standardmodels::model_cube_front, glm::vec3(x, y, z));
f_vertices.add(vertices);
f_normals.add(AM::standardmodels::model_cube_front_normal);
for(int i = 0; i < 6; i++){
f_color.add(currentBlock.getVoxel().getColor());
}
}
if(right){
std::vector<glm::vec3> vertices = translateVertices(AM::standardmodels::model_cube_right, glm::vec3(x, y, z));
f_vertices.add(vertices);
f_normals.add(AM::standardmodels::model_cube_right_normal);
for(int i = 0; i < 6; i++){
f_color.add(currentBlock.getVoxel().getColor());
}
}
if(back){
std::vector<glm::vec3> vertices = translateVertices(AM::standardmodels::model_cube_back, glm::vec3(x, y, z));
f_vertices.add(vertices);
f_normals.add(AM::standardmodels::model_cube_back_normal);
for(int i = 0; i < 6; i++){
f_color.add(currentBlock.getVoxel().getColor());
}
}
if(left){
std::vector<glm::vec3> vertices = translateVertices(AM::standardmodels::model_cube_left, glm::vec3(x, y, z));
f_vertices.add(vertices);
f_normals.add(AM::standardmodels::model_cube_left_normal);
for(int i = 0; i < 6; i++){
f_color.add(currentBlock.getVoxel().getColor());
}
}
if(top){
std::vector<glm::vec3> vertices = translateVertices(AM::standardmodels::model_cube_top, glm::vec3(x, y, z));
f_vertices.add(vertices);
f_normals.add(AM::standardmodels::model_cube_top_normal);
for(int i = 0; i < 6; i++){
f_color.add(currentBlock.getVoxel().getColor());
}
}
if(bottom) {
std::vector<glm::vec3> vertices = translateVertices(AM::standardmodels::model_cube_bottom, glm::vec3(x, y, z));
f_vertices.add(vertices);
f_normals.add(AM::standardmodels::model_cube_bottom_normal);
for (int i = 0; i < 6; i++) {
f_color.add(currentBlock.getVoxel().getColor());
}
}
}
}
}
m_vertices.upload(f_vertices.get());
m_normals.upload(f_normals.get());
m_colors.upload(f_color.get());
m_verticeAmount = f_vertices.get().size();
}
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