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93 changes: 93 additions & 0 deletions
93
src/main/java/astrinox/stellum/handlers/explosion/ExplosionHandler.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,93 @@ | ||
| package astrinox.stellum.handlers.explosion; | ||
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| import java.util.List; | ||
| import java.util.Random; | ||
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| import astrinox.stellum.util.PerlinNoiseHelper; | ||
| import net.minecraft.block.Blocks; | ||
| import net.minecraft.entity.LivingEntity; | ||
| import net.minecraft.util.math.BlockPos; | ||
| import net.minecraft.util.math.Box; | ||
| import net.minecraft.util.math.BlockPos.Mutable; | ||
| import net.minecraft.world.World; | ||
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| public class ExplosionHandler { | ||
| private BlockPos pos = new BlockPos(0, 0, 0); | ||
| private int size = 16; | ||
| private double noiseScale = 0.3; | ||
| private float noiseMultiplier = 100; | ||
| private boolean breakBlocks = true; | ||
| private boolean hurtEntities = true; | ||
| private float damage = 10; | ||
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| public ExplosionHandler setPos(BlockPos pos) { | ||
| this.pos = pos; | ||
| return this; | ||
| } | ||
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| public ExplosionHandler setSize(int size) { | ||
| this.size = size; | ||
| return this; | ||
| } | ||
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| public ExplosionHandler setNoiseScale(double noiseScale) { | ||
| this.noiseScale = noiseScale; | ||
| return this; | ||
| } | ||
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| public ExplosionHandler setNoiseMultiplier(float noiseMultiplier) { | ||
| this.noiseMultiplier = noiseMultiplier; | ||
| return this; | ||
| } | ||
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| public ExplosionHandler setBreakBlocks(boolean breakBlocks) { | ||
| this.breakBlocks = breakBlocks; | ||
| return this; | ||
| } | ||
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| public ExplosionHandler setHurtEntities(boolean hurtEntities) { | ||
| this.hurtEntities = hurtEntities; | ||
| return this; | ||
| } | ||
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| public ExplosionHandler setDamage(float damage) { | ||
| this.damage = damage; | ||
| return this; | ||
| } | ||
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| public void trigger(World world) { | ||
| int sizeSquared = size * size; | ||
| Mutable blockPos = new Mutable(); | ||
| PerlinNoiseHelper mainNoise = new PerlinNoiseHelper(new Random().nextLong(), noiseScale); | ||
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| for (int x = pos.getX() - size; x <= pos.getX() + size; x++) { | ||
| for (int y = pos.getY() - size; y <= pos.getY() + size; y++) { | ||
| for (int z = pos.getZ() - size; z <= pos.getZ() + size; z++) { | ||
| int dx = x - pos.getX(); | ||
| int dy = y - pos.getY(); | ||
| int dz = z - pos.getZ(); | ||
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| int distanceSquared = dx * dx + dy * dy + dz * dz; | ||
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| if (distanceSquared <= sizeSquared + mainNoise.noise(x, y, z) * noiseMultiplier) { | ||
| blockPos.set(x, y, z); | ||
| if (breakBlocks) { | ||
| world.setBlockState(blockPos, Blocks.AIR.getDefaultState()); | ||
| } | ||
| if (hurtEntities) { | ||
| Box box = new Box(x - 0.5, y - 0.5, z - 0.5, x + 0.5, y + 0.5, z + 0.5); | ||
| List<LivingEntity> entities = world.getEntitiesByClass(LivingEntity.class, box, | ||
| e -> e.isAlive()); | ||
| for (LivingEntity entity : entities) { | ||
| entity.damage(world.getDamageSources().generic(), damage); | ||
| } | ||
| } | ||
| } | ||
| } | ||
| } | ||
| } | ||
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| // TODO: Add effects pass, for things like fire and scorching | ||
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| } | ||
| } |
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74 changes: 74 additions & 0 deletions
74
src/main/java/astrinox/stellum/util/PerlinNoiseHelper.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,74 @@ | ||
| package astrinox.stellum.util; | ||
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| import java.util.Random; | ||
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| public class PerlinNoiseHelper { | ||
| private int[] perm; | ||
| private double scale; | ||
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| public PerlinNoiseHelper(long seed, double scale) { | ||
| this.scale = scale; | ||
| perm = new int[512]; | ||
| Random random = new Random(seed); | ||
| for (int i = 0; i < 256; i++) { | ||
| perm[i] = i; | ||
| } | ||
| for (int i = 0; i < 256; i++) { | ||
| int j = random.nextInt(256); | ||
| int temp = perm[i]; | ||
| perm[i] = perm[j]; | ||
| perm[j] = temp; | ||
| } | ||
| System.arraycopy(perm, 0, perm, 256, 256); | ||
| } | ||
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| private double fade(double t) { | ||
| return t * t * t * (t * (t * 6 - 15) + 10); | ||
| } | ||
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| private double lerp(double t, double a, double b) { | ||
| return a + t * (b - a); | ||
| } | ||
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| private double grad(int hash, double x, double y, double z) { | ||
| int h = hash & 15; | ||
| double u = h < 8 ? x : y; | ||
| double v = h < 4 ? y : (h == 12 || h == 14 ? x : z); | ||
| return ((h & 1) == 0 ? u : -u) + ((h & 2) == 0 ? v : -v); | ||
| } | ||
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| public double noise(double x, double y, double z) { | ||
| x *= scale; | ||
| y *= scale; | ||
| z *= scale; | ||
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| int X = (int) Math.floor(x) & 255; | ||
| int Y = (int) Math.floor(y) & 255; | ||
| int Z = (int) Math.floor(z) & 255; | ||
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| x -= Math.floor(x); | ||
| y -= Math.floor(y); | ||
| z -= Math.floor(z); | ||
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| double u = fade(x); | ||
| double v = fade(y); | ||
| double w = fade(z); | ||
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| int A = perm[X] + Y; | ||
| int AA = perm[A] + Z; | ||
| int AB = perm[A + 1] + Z; | ||
| int B = perm[X + 1] + Y; | ||
| int BA = perm[B] + Z; | ||
| int BB = perm[B + 1] + Z; | ||
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| return lerp(w, lerp(v, lerp(u, grad(perm[AA], x, y, z), | ||
| grad(perm[BA], x - 1, y, z)), | ||
| lerp(u, grad(perm[AB], x, y - 1, z), | ||
| grad(perm[BB], x - 1, y - 1, z))), | ||
| lerp(v, lerp(u, grad(perm[AA + 1], x, y, z - 1), | ||
| grad(perm[BA + 1], x - 1, y, z - 1)), | ||
| lerp(u, grad(perm[AB + 1], x, y - 1, z - 1), | ||
| grad(perm[BB + 1], x - 1, y - 1, z - 1)))); | ||
| } | ||
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| } |