package codechicken.nei;
import codechicken.lib.math.MathHelper;
import codechicken.lib.render.RenderUtils;
import codechicken.lib.vec.Cuboid6;
import codechicken.nei.KeyManager.IKeyStateTracker;
import net.minecraft.client.Minecraft;
import net.minecraft.client.renderer.GlStateManager;
import net.minecraft.entity.Entity;
import net.minecraft.entity.EntityLiving.SpawnPlacementType;
import net.minecraft.entity.EnumCreatureType;
import net.minecraft.entity.passive.EntityPig;
import net.minecraft.util.AxisAlignedBB;
import net.minecraft.util.BlockPos;
import net.minecraft.world.EnumSkyBlock;
import net.minecraft.world.SpawnerAnimals;
import net.minecraft.world.World;
import net.minecraft.world.biome.BiomeGenBase;
import net.minecraft.world.chunk.Chunk;
import static org.lwjgl.opengl.GL11.*;
public class WorldOverlayRenderer implements IKeyStateTracker
{
public static int mobOverlay = 0;
public static int chunkOverlay = 0;
public static void reset() {
mobOverlay = 0;
chunkOverlay = 0;
}
@Override
public void tickKeyStates() {
if (Minecraft.getMinecraft().currentScreen != null)
return;
if (KeyManager.keyStates.get("world.moboverlay").down)
mobOverlay = (mobOverlay + 1) % 2;
if (KeyManager.keyStates.get("world.chunkoverlay").down)
chunkOverlay = (chunkOverlay + 1) % 3;
}
public static void render(float frame) {
GlStateManager.pushMatrix();
Entity entity = Minecraft.getMinecraft().getRenderViewEntity();
RenderUtils.translateToWorldCoords(entity, frame);
renderChunkBounds(entity);
renderMobSpawnOverlay(entity);
GlStateManager.popMatrix();
}
private static void renderMobSpawnOverlay(Entity entity) {
if (mobOverlay == 0)
return;
GlStateManager.disableTexture2D();
GlStateManager.disableLighting();
glLineWidth(1.5F);
glBegin(GL_LINES);
GlStateManager.color(1, 0, 0);
World world = entity.worldObj;
int x1 = (int) entity.posX;
int z1 = (int) entity.posZ;
int y1 = (int) MathHelper.clip(entity.posY, 16, world.getHeight() - 16);
for (int x = x1 - 16; x <= x1 + 16; x++)
for (int z = z1 - 16; z <= z1 + 16; z++) {
BlockPos pos = new BlockPos(x, y1, z);
Chunk chunk = world.getChunkFromBlockCoords(pos);
BiomeGenBase biome = world.getBiomeGenForCoords(pos);
if (biome.getSpawnableList(EnumCreatureType.MONSTER).isEmpty() || biome.getSpawningChance() <= 0)
continue;
for (int y = y1 - 16; y < y1 + 16; y++) {
int spawnMode = getSpawnMode(chunk, x, y, z);
if (spawnMode == 0)
continue;
if (spawnMode == 1)
GlStateManager.color(1, 1, 0);
else
GlStateManager.color(1, 0, 0);
glVertex3d(x, y + 0.004, z);
glVertex3d(x + 1, y + 0.004, z + 1);
glVertex3d(x + 1, y + 0.004, z);
glVertex3d(x, y + 0.004, z + 1);
}
}
glEnd();
GlStateManager.enableLighting();
GlStateManager.enableTexture2D();
}
private static Entity dummyEntity = new EntityPig(null);
private static Cuboid6 c = new Cuboid6();
private static int getSpawnMode(Chunk chunk, int x, int y, int z) {
World world = chunk.getWorld();
BlockPos pos = new BlockPos(x, y, z);
if (!SpawnerAnimals.canCreatureTypeSpawnAtLocation(SpawnPlacementType.ON_GROUND, world, pos) ||
chunk.getLightFor(EnumSkyBlock.BLOCK, pos) >= 8)
return 0;
c.set(x+0.2, y+0.01, z+0.2, x+0.8, y+1.8, z+0.8);
AxisAlignedBB aabb = c.aabb();
if (!world.checkNoEntityCollision(aabb) ||
!world.getCollidingBoundingBoxes(dummyEntity, aabb).isEmpty() ||
world.isAnyLiquid(aabb))
return 0;
if (chunk.getLightFor(EnumSkyBlock.SKY, pos) >= 8)
return 1;
return 2;
}
private static void renderChunkBounds(Entity entity) {
if (chunkOverlay == 0)
return;
GlStateManager.disableTexture2D();
GlStateManager.enableBlend();
GlStateManager.blendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
GlStateManager.disableLighting();
glLineWidth(1.5F);
glBegin(GL_LINES);
for (int cx = -4; cx <= 4; cx++)
for (int cz = -4; cz <= 4; cz++) {
double x1 = (entity.chunkCoordX + cx) << 4;
double z1 = (entity.chunkCoordZ + cz) << 4;
double x2 = x1 + 16;
double z2 = z1 + 16;
double dy = 128;
double y1 = Math.floor(entity.posY - dy / 2);
double y2 = y1 + dy;
if (y1 < 0) {
y1 = 0;
y2 = dy;
}
if (y1 > entity.worldObj.getHeight()) {
y2 = entity.worldObj.getHeight();
y1 = y2 - dy;
}
double dist = Math.pow(1.5, -(cx * cx + cz * cz));
GlStateManager.color(0.9F, 0, 0, (float) dist);
if (cx >= 0 && cz >= 0) {
glVertex3d(x2, y1, z2);
glVertex3d(x2, y2, z2);
}
if (cx >= 0 && cz <= 0) {
glVertex3d(x2, y1, z1);
glVertex3d(x2, y2, z1);
}
if (cx <= 0 && cz >= 0) {
glVertex3d(x1, y1, z2);
glVertex3d(x1, y2, z2);
}
if (cx <= 0 && cz <= 0) {
glVertex3d(x1, y1, z1);
glVertex3d(x1, y2, z1);
}
if (chunkOverlay == 2 && cx == 0 && cz == 0) {
dy = 32;
y1 = Math.floor(entity.posY - dy / 2);
y2 = y1 + dy;
if (y1 < 0) {
y1 = 0;
y2 = dy;
}
if (y1 > entity.worldObj.getHeight()) {
y2 = entity.worldObj.getHeight();
y1 = y2 - dy;
}
GlStateManager.color(0, 0.9F, 0, 0.4F);
for (double y = (int) y1; y <= y2; y++) {
glVertex3d(x2, y, z1);
glVertex3d(x2, y, z2);
glVertex3d(x1, y, z1);
glVertex3d(x1, y, z2);
glVertex3d(x1, y, z2);
glVertex3d(x2, y, z2);
glVertex3d(x1, y, z1);
glVertex3d(x2, y, z1);
}
for (double h = 1; h <= 15; h++) {
glVertex3d(x1 + h, y1, z1);
glVertex3d(x1 + h, y2, z1);
glVertex3d(x1 + h, y1, z2);
glVertex3d(x1 + h, y2, z2);
glVertex3d(x1, y1, z1 + h);
glVertex3d(x1, y2, z1 + h);
glVertex3d(x2, y1, z1 + h);
glVertex3d(x2, y2, z1 + h);
}
}
}
glEnd();
GlStateManager.enableLighting();
GlStateManager.disableBlend();
GlStateManager.enableTexture2D();
}
public static void load() {
KeyManager.trackers.add(new WorldOverlayRenderer());
}
}
