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package net.tylermurphy.Minecraft.Chunk;
import static net.tylermurphy.Minecraft.Chunk.Cube.*;
import java.util.ArrayList;
import java.util.List;
import net.tylermurphy.Minecraft.Scene.Objects.Transform;
import org.json.JSONArray;
import org.json.JSONObject;
import org.joml.Vector2f;
import org.joml.Vector3f;
import net.tylermurphy.Minecraft.Render.Data.Mesh;
import net.tylermurphy.Minecraft.Scene.World;
import net.tylermurphy.Minecraft.Scene.Objects.Renderable;
public class ChunkMesh {
private List<Vertex> verticies;
private List<Vertex> tranaparentVerticies;
private List<Float> positionsList;
private List<Float> normalsList;
private List<Float> tcsList;
private List<Float> lightingList;
private List<Float> layerList;
public float[] positions, tcs, normals, lighting, layers;
private Chunk chunk;
private boolean transparent;
public boolean completed = false;
public void update(Chunk chunk, boolean transparent) {
this.chunk = chunk;
this.transparent = transparent;
this.completed = false;
verticies = new ArrayList<>();
tranaparentVerticies = new ArrayList<>();
positionsList = new ArrayList<>();
normalsList = new ArrayList<>();
tcsList = new ArrayList<>();
lightingList = new ArrayList<>();
layerList = new ArrayList<>();
buildMesh();
populateLists();
this.completed = true;
}
private void buildMesh() {
for(int x=0;x<16;x++) {
for(int y=0; y<256; y++) {
for(int z=0; z<16; z++) {
if(chunk.cubes[x][y][z] == AIR) continue;
if(getBlock(chunk.cubes[x][y][z]).transparent != transparent) continue;
boolean px = true, nx = true, py = true, ny = true, pz = true, nz = true;
if(x<15) px = chunk.cubes[x + 1][y][z] != AIR && transparentCheck(x + 1, y, z, x, y, z);
else px = getCube(chunk.gridX + 1, chunk.gridZ, 0, y, z) != AIR && transparentCheck(getCube(chunk.gridX + 1, chunk.gridZ, 0, y, z), x, y, z);
if(x>0) nx = chunk.cubes[x - 1][y][z] != AIR && transparentCheck(x - 1, y, z, x, y, z);
else nx = getCube(chunk.gridX - 1, chunk.gridZ, 15, y, z) != AIR && transparentCheck(getCube(chunk.gridX - 1, chunk.gridZ, 15, y, z), x, y, z);
if(y<255) py = chunk.cubes[x][y + 1][z] != AIR && transparentCheck(x, y + 1, z, x, y, z);
if(y>0) ny = chunk.cubes[x][y - 1][z] != AIR && transparentCheck(x, y - 1, z, x, y, z);
if(z<15) pz = chunk.cubes[x][y][z + 1] != AIR && transparentCheck(x, y, z + 1, x, y, z);
else pz = getCube(chunk.gridX, chunk.gridZ + 1, x, y, 0) != AIR && transparentCheck(getCube(chunk.gridX, chunk.gridZ + 1, x, y, 0), x, y, z);
if(z>0) nz = chunk.cubes[x][y][z - 1] != AIR && transparentCheck(x, y, z - 1, x, y, z);
else nz = getCube(chunk.gridX, chunk.gridZ - 1, x, y, 15) != AIR && transparentCheck(getCube(chunk.gridX, chunk.gridZ - 1, x, y, 15), x, y, z);
JSONObject positions = getBlock(chunk.cubes[x][y][z]).positions;
if(chunk.cubes[x][y][z]==17 && ( y==255 || chunk.cubes[x][y+1][z] != 17 )) {
if(y<255) {
byte xp,xn,zp,zn;
if(x<15) xp = chunk.cubes[x+1][y+1][z];
else xp = getCube(chunk.gridX+1,chunk.gridZ,0,y+1,z);
if(x<0) xn = chunk.cubes[x-1][y+1][z];
else xn = getCube(chunk.gridX-1,chunk.gridZ,15,y+1,z);
if(z<15) zp = chunk.cubes[x][y+1][z+1];
else zp = getCube(chunk.gridX,chunk.gridZ+1,x,y+1,0);
if(z<0) zn = chunk.cubes[x][y+1][z-1];
else zn = getCube(chunk.gridX,chunk.gridZ-1,x,y+1,15);
if(xp != 17 && xn != 17 && zp != 17 && zn != 17) {
positions = models.get("water");
py = false;
}
} else {
positions = models.get("water");
py = false;
}
}
if(getBlock(chunk.cubes[x][y][z]).transparent && chunk.cubes[x][y][z] != 17 && (y == 0 || chunk.cubes[x][y-1][z] == 17)) {
ny = false;
}
JSONArray PX_POS = positions.getJSONArray("PX_POS");
JSONArray NX_POS = positions.getJSONArray("NX_POS");
JSONArray PY_POS = positions.getJSONArray("PY_POS");
JSONArray NY_POS = positions.getJSONArray("NY_POS");
JSONArray PZ_POS = positions.getJSONArray("PZ_POS");
JSONArray NZ_POS = positions.getJSONArray("NZ_POS");
if(!px) { for(int i=0;i<6;i++) { verticies.add(new Vertex(new Vector3f((float) PX_POS.getJSONArray(i).getDouble(0) + x, (float) PX_POS.getJSONArray(i).getDouble(1) + y, (float) PX_POS.getJSONArray(i).getDouble(2) + z), TEXTURE_CORDS[i], NORMALS[i], getBlock(chunk.cubes[x][y][z]).tex_px, .9f)); } }
if(!nx) { for(int i=0;i<6;i++) { verticies.add(new Vertex(new Vector3f((float) NX_POS.getJSONArray(i).getDouble(0) + x, (float) NX_POS.getJSONArray(i).getDouble(1) + y, (float) NX_POS.getJSONArray(i).getDouble(2) + z), TEXTURE_CORDS[i], NORMALS[i], getBlock(chunk.cubes[x][y][z]).tex_nx, .9f)); } }
if(!py) { for(int i=0;i<6;i++) { verticies.add(new Vertex(new Vector3f((float) PY_POS.getJSONArray(i).getDouble(0) + x, (float) PY_POS.getJSONArray(i).getDouble(1) + y, (float) PY_POS.getJSONArray(i).getDouble(2) + z), TEXTURE_CORDS[i], NORMALS[i], getBlock(chunk.cubes[x][y][z]).tex_py, 1f)); } }
if(!ny) { for(int i=0;i<6;i++) { verticies.add(new Vertex(new Vector3f((float) NY_POS.getJSONArray(i).getDouble(0) + x, (float) NY_POS.getJSONArray(i).getDouble(1) + y, (float) NY_POS.getJSONArray(i).getDouble(2) + z), TEXTURE_CORDS[i], NORMALS[i], getBlock(chunk.cubes[x][y][z]).tex_ny, 1f)); } }
if(!pz) { for(int i=0;i<6;i++) { verticies.add(new Vertex(new Vector3f((float) PZ_POS.getJSONArray(i).getDouble(0) + x, (float) PZ_POS.getJSONArray(i).getDouble(1) + y, (float) PZ_POS.getJSONArray(i).getDouble(2) + z), TEXTURE_CORDS[i], NORMALS[i], getBlock(chunk.cubes[x][y][z]).tex_pz, .8f)); } }
if(!nz) { for(int i=0;i<6;i++) { verticies.add(new Vertex(new Vector3f((float) NZ_POS.getJSONArray(i).getDouble(0) + x, (float) NZ_POS.getJSONArray(i).getDouble(1) + y, (float) NZ_POS.getJSONArray(i).getDouble(2) + z), TEXTURE_CORDS[i], NORMALS[i], getBlock(chunk.cubes[x][y][z]).tex_nz, .8f)); } }
}
}
}
}
private byte getCube(int gx, int gz, int x, int y, int z) {
Chunk c = World.getChunk(gx,gz);
if(c == null) return 0;
return c.cubes[x][y][z];
}
private boolean transparentCheck(int x1,int y1,int z1,int x2,int y2,int z2) {
return transparentCheck(chunk.cubes[x1][y1][z1], x2, y2, z2);
}
private boolean transparentCheck(byte block,int x2,int y2,int z2) {
if(getBlock(block).alwaysRenderNeighbors || getBlock(chunk.cubes[x2][y2][z2]).alwaysRenderNeighbors)
return false;
else if(!getBlock(block).transparent && !getBlock(chunk.cubes[x2][y2][z2]).transparent && block == chunk.cubes[x2][y2][z2])
return true;
else return getBlock(block).transparent == getBlock(chunk.cubes[x2][y2][z2]).transparent || !getBlock(block).transparent;
}
static class Vertex{
Vector3f positions;
Vector2f uvs;
Vector3f normals;
float light;
float layer;
Vertex(Vector3f positions, Vector2f uvs, Vector3f normals, float layer, float light){
this.positions = positions;
this.uvs = uvs;
this.normals = normals;
this.layer = layer;
this.light = light;
}
}
private void populateLists() {
for(Vertex vertex : verticies) {
positionsList.add(vertex.positions.x);
positionsList.add(vertex.positions.y);
positionsList.add(vertex.positions.z);
tcsList.add(vertex.uvs.x);
tcsList.add(vertex.uvs.y);
normalsList.add(vertex.normals.x);
normalsList.add(vertex.normals.y);
normalsList.add(vertex.normals.z);
lightingList.add(vertex.light);
layerList.add(vertex.layer);
}
positions = new float[positionsList.size()];
tcs = new float[tcsList.size()];
normals = new float[normalsList.size()];
lighting = new float[lightingList.size()];
layers = new float[layerList.size()];
for(int i=0;i<positions.length;i++) positions[i] = positionsList.get(i);
for(int i=0;i<normals.length;i++) normals[i] = normalsList.get(i);
for(int i=0;i<tcs.length;i++) tcs[i] = tcsList.get(i);
for(int i=0;i<lighting.length;i++) lighting[i] = lightingList.get(i);
for(int i=0;i<layers.length;i++) layers[i] = layerList.get(i);
verticies.clear();
tranaparentVerticies.clear();
positionsList.clear();
normalsList.clear();
tcsList.clear();
lightingList.clear();
layerList.clear();
}
public Renderable createChunkMesh() {
Mesh mesh = new Mesh(positions.length)
.store(positions, 3)
.store(tcs, 2)
.store(lighting, 1)
.store(layers, 1)
.finish();
Transform transform = new Transform().setPosition(new Vector3f(chunk.gridX*16,9,chunk.gridZ*16));
Renderable renderable = new Renderable(mesh, transform, TEXTURE);
this.positions = null;
this.tcs = null;
this.normals = null;
this.lighting = null;
this.layers = null;
this.chunk = null;
this.completed = false;
return renderable;
}
}
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