Make things explodes via patches

patches/server/Actually-optimise-explosions.patch

@@ -38,7 +38,7 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 --- a/src/main/java/net/minecraft/world/level/Explosion.java
 +++ b/src/main/java/net/minecraft/world/level/Explosion.java
 @@ -0,0 +0,0 @@ public class Explosion {
-         this.damageCalculator = behavior == null ? this.makeDamageCalculator(entity) : behavior;
+         this.yield = this.blockInteraction == Explosion.BlockInteraction.DESTROY_WITH_DECAY ? 1.0F / this.radius : 1.0F; // CraftBukkit
      }
  
 +    // Paper start - optimise collisions
@@ -403,10 +403,9 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 -                            if (optional.isPresent()) {
 -                                f -= ((Float) optional.get() + 0.3F) * 0.3F;
 -                            }
-+                            if (!iblockdata.isDestroyable()) continue; // Paper
-+                            // Paper - optimise explosions
- 
+-
 -                            if (f > 0.0F && this.damageCalculator.shouldBlockExplode(this, this.level, blockposition, iblockdata, f)) {
++                            if (!iblockdata.isDestroyable()) continue; // Paper
 +                            // Paper - optimise explosions
 +
 +                            f -= cachedBlock.resistance; // Paper - optimise explosions
@@ -448,23 +447,23 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
              Entity entity = (Entity) iterator.next();
  
 @@ -0,0 +0,0 @@ public class Explosion {
-                         d8 /= d11;
-                         d9 /= d11;
-                         d10 /= d11;
--                        double d12 = this.getBlockDensity(vec3d, entity); // Paper - Optimize explosions
-+                        double d12 = this.getBlockDensity(vec3d, entity, blockCache, blockPos); // Paper - Optimize explosions // Paper - optimise explosions
-                         double d13 = (1.0D - d7) * d12;
- 
-                         // CraftBukkit start
-@@ -0,0 +0,0 @@ public class Explosion {
+                                 for (EnderDragonPart entityComplexPart : ((EnderDragon) entity).subEntities) {
                                      // Calculate damage separately for each EntityComplexPart
-                                 double d7part;
-                                 if (list.contains(entityComplexPart) && (d7part = Math.sqrt(entityComplexPart.distanceToSqr(vec3d)) / f2) <= 1.0D) {
--                                    double d13part = (1.0D - d7part) * Explosion.getSeenPercent(vec3d, entityComplexPart);
-+                                    double d13part = (1.0D - d7part) * this.getSeenFraction(vec3d, entityComplexPart, blockCache, blockPos); // Paper - optimise explosions
-                                     entityComplexPart.hurt(this.getDamageSource(), (float) ((int) ((d13part * d13part + d13part) / 2.0D * 7.0D * (double) f2 + 1.0D)));
+                                     if (list.contains(entityComplexPart)) {
+-                                        entityComplexPart.hurt(this.damageSource, this.damageCalculator.getEntityDamageAmount(this, entity));
++                                        entityComplexPart.hurt(this.damageSource, this.damageCalculator.getEntityDamageAmount(this, entity, getSeenFraction(vec3d, entityComplexPart, blockCache, blockPos))); // Paper - actually optimise explosions
                                      }
                                  }
+                             } else {
+@@ -0,0 +0,0 @@ public class Explosion {
+                             // CraftBukkit end
+                         }
+ 
+-                        double d12 = (1.0D - d7) * this.getBlockDensity(vec3d, entity); // Paper - Optimize explosions
++                        double d12 = (1.0D - d7) * this.getBlockDensity(vec3d, entity, blockCache, blockPos); // Paper - Optimize explosions
+                         double d13;
+ 
+                         if (entity instanceof LivingEntity) {
 @@ -0,0 +0,0 @@ public class Explosion {
              }
          }
@@ -472,7 +471,6 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 +        this.blockCache = null; // Paper - optimise explosions
 +        this.chunkPosCache = null; // Paper - optimise explosions
 +        this.chunkCache = null; // Paper - optimise explosions
-+
      }
  
      public void finalizeExplosion(boolean particles) {
@@ -494,3 +492,24 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
              this.level.explosionDensityCache.put(key, blockDensity);
          }
  
+diff --git a/src/main/java/net/minecraft/world/level/ExplosionDamageCalculator.java b/src/main/java/net/minecraft/world/level/ExplosionDamageCalculator.java
+index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
+--- a/src/main/java/net/minecraft/world/level/ExplosionDamageCalculator.java
++++ b/src/main/java/net/minecraft/world/level/ExplosionDamageCalculator.java
+@@ -0,0 +0,0 @@ public class ExplosionDamageCalculator {
+     }
+ 
+     public float getEntityDamageAmount(Explosion explosion, Entity entity) {
++        // Paper start - actually optimise explosions
++        return this.getEntityDamageAmount(explosion, entity, Explosion.getSeenPercent(explosion.center(), entity));
++    }
++    public float getEntityDamageAmount(Explosion explosion, Entity entity, double seenPercent) {
++        // Paper end - actually optimise explosions
+         float f = explosion.radius() * 2.0F;
+         Vec3 vec3 = explosion.center();
+         double d = Math.sqrt(entity.distanceToSqr(vec3)) / (double)f;
+-        double e = (1.0D - d) * (double)Explosion.getSeenPercent(vec3, entity);
++        double e = (1.0D - d) * seenPercent; // Paper - actually optimise explosions
+         return (float)((e * e + e) / 2.0D * 7.0D * (double)f + 1.0D);
+     }
+ }