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Voomra
2024-08-26 22:35:42 +03:00
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src/com/mojang/ld22/level/levelgen/LevelGen.java Normal file
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package com.mojang.ld22.level.levelgen;
import java.awt.Image;
import java.awt.image.BufferedImage;
import java.util.Random;
import javax.swing.ImageIcon;
import javax.swing.JOptionPane;
import com.mojang.ld22.level.tile.Tile;
public class LevelGen {
private static final Random random = new Random();
public double[] values;
private int w, h;
public LevelGen(int w, int h, int featureSize) {
this.w = w;
this.h = h;
values = new double[w * h];
for (int y = 0; y < w; y += featureSize) {
for (int x = 0; x < w; x += featureSize) {
setSample(x, y, random.nextFloat() * 2 - 1);
}
}
int stepSize = featureSize;
double scale = 1.0 / w;
double scaleMod = 1;
do {
int halfStep = stepSize / 2;
for (int y = 0; y < w; y += stepSize) {
for (int x = 0; x < w; x += stepSize) {
double a = sample(x, y);
double b = sample(x + stepSize, y);
double c = sample(x, y + stepSize);
double d = sample(x + stepSize, y + stepSize);
double e = (a + b + c + d) / 4.0 + (random.nextFloat() * 2 - 1) * stepSize * scale;
setSample(x + halfStep, y + halfStep, e);
}
}
for (int y = 0; y < w; y += stepSize) {
for (int x = 0; x < w; x += stepSize) {
double a = sample(x, y);
double b = sample(x + stepSize, y);
double c = sample(x, y + stepSize);
double d = sample(x + halfStep, y + halfStep);
double e = sample(x + halfStep, y - halfStep);
double f = sample(x - halfStep, y + halfStep);
double H = (a + b + d + e) / 4.0 + (random.nextFloat() * 2 - 1) * stepSize * scale * 0.5;
double g = (a + c + d + f) / 4.0 + (random.nextFloat() * 2 - 1) * stepSize * scale * 0.5;
setSample(x + halfStep, y, H);
setSample(x, y + halfStep, g);
}
}
stepSize /= 2;
scale *= (scaleMod + 0.8);
scaleMod *= 0.3;
} while (stepSize > 1);
}
private double sample(int x, int y) {
return values[(x & (w - 1)) + (y & (h - 1)) * w];
}
private void setSample(int x, int y, double value) {
values[(x & (w - 1)) + (y & (h - 1)) * w] = value;
}
public static byte[][] createAndValidateTopMap(int w, int h) {
int attempt = 0;
do {
byte[][] result = createTopMap(w, h);
int[] count = new int[256];
for (int i = 0; i < w * h; i++) {
count[result[0][i] & 0xff]++;
}
if (count[Tile.rock.id & 0xff] < 100) continue;
if (count[Tile.sand.id & 0xff] < 100) continue;
if (count[Tile.grass.id & 0xff] < 100) continue;
if (count[Tile.tree.id & 0xff] < 100) continue;
if (count[Tile.stairsDown.id & 0xff] < 2) continue;
return result;
} while (true);
}
public static byte[][] createAndValidateUndergroundMap(int w, int h, int depth) {
int attempt = 0;
do {
byte[][] result = createUndergroundMap(w, h, depth);
int[] count = new int[256];
for (int i = 0; i < w * h; i++) {
count[result[0][i] & 0xff]++;
}
if (count[Tile.rock.id & 0xff] < 100) continue;
if (count[Tile.dirt.id & 0xff] < 100) continue;
if (count[(Tile.ironOre.id & 0xff) + depth - 1] < 20) continue;
if (depth < 3) if (count[Tile.stairsDown.id & 0xff] < 2) continue;
return result;
} while (true);
}
public static byte[][] createAndValidateSkyMap(int w, int h) {
int attempt = 0;
do {
byte[][] result = createSkyMap(w, h);
int[] count = new int[256];
for (int i = 0; i < w * h; i++) {
count[result[0][i] & 0xff]++;
}
if (count[Tile.cloud.id & 0xff] < 2000) continue;
if (count[Tile.stairsDown.id & 0xff] < 2) continue;
return result;
} while (true);
}
private static byte[][] createTopMap(int w, int h) {
LevelGen mnoise1 = new LevelGen(w, h, 16);
LevelGen mnoise2 = new LevelGen(w, h, 16);
LevelGen mnoise3 = new LevelGen(w, h, 16);
LevelGen noise1 = new LevelGen(w, h, 32);
LevelGen noise2 = new LevelGen(w, h, 32);
byte[] map = new byte[w * h];
byte[] data = new byte[w * h];
for (int y = 0; y < h; y++) {
for (int x = 0; x < w; x++) {
int i = x + y * w;
double val = Math.abs(noise1.values[i] - noise2.values[i]) * 3 - 2;
double mval = Math.abs(mnoise1.values[i] - mnoise2.values[i]);
mval = Math.abs(mval - mnoise3.values[i]) * 3 - 2;
double xd = x / (w - 1.0) * 2 - 1;
double yd = y / (h - 1.0) * 2 - 1;
if (xd < 0) xd = -xd;
if (yd < 0) yd = -yd;
double dist = xd >= yd ? xd : yd;
dist = dist * dist * dist * dist;
dist = dist * dist * dist * dist;
val = val + 1 - dist * 20;
if (val < -0.5) {
map[i] = Tile.water.id;
} else if (val > 0.5 && mval < -1.5) {
map[i] = Tile.rock.id;
} else {
map[i] = Tile.grass.id;
}
}
}
for (int i = 0; i < w * h / 2800; i++) {
int xs = random.nextInt(w);
int ys = random.nextInt(h);
for (int k = 0; k < 10; k++) {
int x = xs + random.nextInt(21) - 10;
int y = ys + random.nextInt(21) - 10;
for (int j = 0; j < 100; j++) {
int xo = x + random.nextInt(5) - random.nextInt(5);
int yo = y + random.nextInt(5) - random.nextInt(5);
for (int yy = yo - 1; yy <= yo + 1; yy++)
for (int xx = xo - 1; xx <= xo + 1; xx++)
if (xx >= 0 && yy >= 0 && xx < w && yy < h) {
if (map[xx + yy * w] == Tile.grass.id) {
map[xx + yy * w] = Tile.sand.id;
}
}
}
}
}
/*
* for (int i = 0; i < w * h / 2800; i++) { int xs = random.nextInt(w); int ys = random.nextInt(h); for (int k = 0; k < 10; k++) { int x = xs + random.nextInt(21) - 10; int y = ys + random.nextInt(21) - 10; for (int j = 0; j < 100; j++) { int xo = x + random.nextInt(5) - random.nextInt(5); int yo = y + random.nextInt(5) - random.nextInt(5); for (int yy = yo - 1; yy <= yo + 1; yy++) for (int xx = xo - 1; xx <= xo + 1; xx++) if (xx >= 0 && yy >= 0 && xx < w && yy < h) { if (map[xx + yy * w] == Tile.grass.id) { map[xx + yy * w] = Tile.dirt.id; } } } } }
*/
for (int i = 0; i < w * h / 400; i++) {
int x = random.nextInt(w);
int y = random.nextInt(h);
for (int j = 0; j < 200; j++) {
int xx = x + random.nextInt(15) - random.nextInt(15);
int yy = y + random.nextInt(15) - random.nextInt(15);
if (xx >= 0 && yy >= 0 && xx < w && yy < h) {
if (map[xx + yy * w] == Tile.grass.id) {
map[xx + yy * w] = Tile.tree.id;
}
}
}
}
for (int i = 0; i < w * h / 400; i++) {
int x = random.nextInt(w);
int y = random.nextInt(h);
int col = random.nextInt(4);
for (int j = 0; j < 30; j++) {
int xx = x + random.nextInt(5) - random.nextInt(5);
int yy = y + random.nextInt(5) - random.nextInt(5);
if (xx >= 0 && yy >= 0 && xx < w && yy < h) {
if (map[xx + yy * w] == Tile.grass.id) {
map[xx + yy * w] = Tile.flower.id;
data[xx + yy * w] = (byte) (col + random.nextInt(4) * 16);
}
}
}
}
for (int i = 0; i < w * h / 100; i++) {
int xx = random.nextInt(w);
int yy = random.nextInt(h);
if (xx >= 0 && yy >= 0 && xx < w && yy < h) {
if (map[xx + yy * w] == Tile.sand.id) {
map[xx + yy * w] = Tile.cactus.id;
}
}
}
int count = 0;
stairsLoop: for (int i = 0; i < w * h / 100; i++) {
int x = random.nextInt(w - 2) + 1;
int y = random.nextInt(h - 2) + 1;
for (int yy = y - 1; yy <= y + 1; yy++)
for (int xx = x - 1; xx <= x + 1; xx++) {
if (map[xx + yy * w] != Tile.rock.id) continue stairsLoop;
}
map[x + y * w] = Tile.stairsDown.id;
count++;
if (count == 4) break;
}
return new byte[][] { map, data };
}
private static byte[][] createUndergroundMap(int w, int h, int depth) {
LevelGen mnoise1 = new LevelGen(w, h, 16);
LevelGen mnoise2 = new LevelGen(w, h, 16);
LevelGen mnoise3 = new LevelGen(w, h, 16);
LevelGen nnoise1 = new LevelGen(w, h, 16);
LevelGen nnoise2 = new LevelGen(w, h, 16);
LevelGen nnoise3 = new LevelGen(w, h, 16);
LevelGen wnoise1 = new LevelGen(w, h, 16);
LevelGen wnoise2 = new LevelGen(w, h, 16);
LevelGen wnoise3 = new LevelGen(w, h, 16);
LevelGen noise1 = new LevelGen(w, h, 32);
LevelGen noise2 = new LevelGen(w, h, 32);
byte[] map = new byte[w * h];
byte[] data = new byte[w * h];
for (int y = 0; y < h; y++) {
for (int x = 0; x < w; x++) {
int i = x + y * w;
double val = Math.abs(noise1.values[i] - noise2.values[i]) * 3 - 2;
double mval = Math.abs(mnoise1.values[i] - mnoise2.values[i]);
mval = Math.abs(mval - mnoise3.values[i]) * 3 - 2;
double nval = Math.abs(nnoise1.values[i] - nnoise2.values[i]);
nval = Math.abs(nval - nnoise3.values[i]) * 3 - 2;
double wval = Math.abs(wnoise1.values[i] - wnoise2.values[i]);
wval = Math.abs(nval - wnoise3.values[i]) * 3 - 2;
double xd = x / (w - 1.0) * 2 - 1;
double yd = y / (h - 1.0) * 2 - 1;
if (xd < 0) xd = -xd;
if (yd < 0) yd = -yd;
double dist = xd >= yd ? xd : yd;
dist = dist * dist * dist * dist;
dist = dist * dist * dist * dist;
val = val + 1 - dist * 20;
if (val > -2 && wval < -2.0 + (depth) / 2 * 3) {
if (depth > 2)
map[i] = Tile.lava.id;
else
map[i] = Tile.water.id;
} else if (val > -2 && (mval < -1.7 || nval < -1.4)) {
map[i] = Tile.dirt.id;
} else {
map[i] = Tile.rock.id;
}
}
}
{
int r = 2;
for (int i = 0; i < w * h / 400; i++) {
int x = random.nextInt(w);
int y = random.nextInt(h);
for (int j = 0; j < 30; j++) {
int xx = x + random.nextInt(5) - random.nextInt(5);
int yy = y + random.nextInt(5) - random.nextInt(5);
if (xx >= r && yy >= r && xx < w - r && yy < h - r) {
if (map[xx + yy * w] == Tile.rock.id) {
map[xx + yy * w] = (byte) ((Tile.ironOre.id & 0xff) + depth - 1);
}
}
}
}
}
if (depth < 3) {
int count = 0;
stairsLoop: for (int i = 0; i < w * h / 100; i++) {
int x = random.nextInt(w - 20) + 10;
int y = random.nextInt(h - 20) + 10;
for (int yy = y - 1; yy <= y + 1; yy++)
for (int xx = x - 1; xx <= x + 1; xx++) {
if (map[xx + yy * w] != Tile.rock.id) continue stairsLoop;
}
map[x + y * w] = Tile.stairsDown.id;
count++;
if (count == 4) break;
}
}
return new byte[][] { map, data };
}
private static byte[][] createSkyMap(int w, int h) {
LevelGen noise1 = new LevelGen(w, h, 8);
LevelGen noise2 = new LevelGen(w, h, 8);
byte[] map = new byte[w * h];
byte[] data = new byte[w * h];
for (int y = 0; y < h; y++) {
for (int x = 0; x < w; x++) {
int i = x + y * w;
double val = Math.abs(noise1.values[i] - noise2.values[i]) * 3 - 2;
double xd = x / (w - 1.0) * 2 - 1;
double yd = y / (h - 1.0) * 2 - 1;
if (xd < 0) xd = -xd;
if (yd < 0) yd = -yd;
double dist = xd >= yd ? xd : yd;
dist = dist * dist * dist * dist;
dist = dist * dist * dist * dist;
val = -val * 1 - 2.2;
val = val + 1 - dist * 20;
if (val < -0.25) {
map[i] = Tile.infiniteFall.id;
} else {
map[i] = Tile.cloud.id;
}
}
}
stairsLoop: for (int i = 0; i < w * h / 50; i++) {
int x = random.nextInt(w - 2) + 1;
int y = random.nextInt(h - 2) + 1;
for (int yy = y - 1; yy <= y + 1; yy++)
for (int xx = x - 1; xx <= x + 1; xx++) {
if (map[xx + yy * w] != Tile.cloud.id) continue stairsLoop;
}
map[x + y * w] = Tile.cloudCactus.id;
}
int count = 0;
stairsLoop: for (int i = 0; i < w * h; i++) {
int x = random.nextInt(w - 2) + 1;
int y = random.nextInt(h - 2) + 1;
for (int yy = y - 1; yy <= y + 1; yy++)
for (int xx = x - 1; xx <= x + 1; xx++) {
if (map[xx + yy * w] != Tile.cloud.id) continue stairsLoop;
}
map[x + y * w] = Tile.stairsDown.id;
count++;
if (count == 2) break;
}
return new byte[][] { map, data };
}
public static void main(String[] args) {
int d = 0;
while (true) {
int w = 128;
int h = 128;
byte[] map = LevelGen.createAndValidateTopMap(w, h)[0];
// byte[] map = LevelGen.createAndValidateUndergroundMap(w, h, (d++ % 3) + 1)[0];
// byte[] map = LevelGen.createAndValidateSkyMap(w, h)[0];
BufferedImage img = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
int[] pixels = new int[w * h];
for (int y = 0; y < h; y++) {
for (int x = 0; x < w; x++) {
int i = x + y * w;
if (map[i] == Tile.water.id) pixels[i] = 0x000080;
if (map[i] == Tile.grass.id) pixels[i] = 0x208020;
if (map[i] == Tile.rock.id) pixels[i] = 0xa0a0a0;
if (map[i] == Tile.dirt.id) pixels[i] = 0x604040;
if (map[i] == Tile.sand.id) pixels[i] = 0xa0a040;
if (map[i] == Tile.tree.id) pixels[i] = 0x003000;
if (map[i] == Tile.lava.id) pixels[i] = 0xff2020;
if (map[i] == Tile.cloud.id) pixels[i] = 0xa0a0a0;
if (map[i] == Tile.stairsDown.id) pixels[i] = 0xffffff;
if (map[i] == Tile.stairsUp.id) pixels[i] = 0xffffff;
if (map[i] == Tile.cloudCactus.id) pixels[i] = 0xff00ff;
}
}
img.setRGB(0, 0, w, h, pixels, 0, w);
JOptionPane.showMessageDialog(null, null, "Another", JOptionPane.YES_NO_OPTION, new ImageIcon(img.getScaledInstance(w * 4, h * 4, Image.SCALE_AREA_AVERAGING)));
}
}
}