Prevent fire charges from lighting fires

Author: Ampflower

src/main/java/net/modfest/fireblanket/mixin/adventure_fix/MixinSmallFireballEntity.java

@@ -0,0 +1,47 @@
+package net.modfest.fireblanket.mixin.adventure_fix;
+
+import com.llamalad7.mixinextras.injector.ModifyExpressionValue;
+import com.llamalad7.mixinextras.sugar.Local;
+import net.minecraft.entity.Entity;
+import net.minecraft.entity.projectile.SmallFireballEntity;
+import net.minecraft.server.network.ServerPlayerEntity;
+import net.minecraft.server.world.ServerWorld;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.world.GameRules;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+
+/**
+ * Some mods apparently will spawn fire charges. Reduce the griefing potential.
+ * <p>
+ * As an amusing aside, it makes Fireblanket live up to its name.
+ *
+ * @author Ampflower
+ **/
+@Mixin(SmallFireballEntity.class)
+public abstract class MixinSmallFireballEntity {
+
+	@ModifyExpressionValue(
+		method = "onBlockHit",
+		at = @At(
+			value = "INVOKE",
+			target = "Lnet/minecraft/world/World;isAir(Lnet/minecraft/util/math/BlockPos;)Z"
+		)
+	)
+	private static boolean fireblanket$madeAccurate(
+		final boolean original,
+		final @Local ServerWorld world,
+		final @Local Entity entity,
+		final @Local BlockPos blockPos
+	) {
+		if (!original) {
+			return false;
+		}
+
+		if (entity == null && !world.getGameRules().getBoolean(GameRules.DO_FIRE_TICK)) {
+			return false;
+		}
+
+		return !(entity instanceof ServerPlayerEntity player) || player.canModifyAt(world, blockPos);
+	}
+}

src/main/resources/fireblanket.mixins.json

@@ -20,6 +20,7 @@
 		"adventure_fix.MixinItemStack",
 		"adventure_fix.MixinPlayerInteractEntityC2SPacketHandler",
 		"adventure_fix.MixinServerPlayerInteractionManager",
+		"adventure_fix.MixinSmallFireballEntity",
 		"ai.MixinTemptGoal",
 		"annoyances.MixinServerPlayNetworkHandler",
 		"annoyances.MixinUtil",