Add permafrost spell and fix dry frosted ice not being very icy

src/main/java/electroblob/wizardry/block/BlockDryFrostedIce.java

@@ -1,6 +1,8 @@
 package electroblob.wizardry.block;
 
 import net.minecraft.block.BlockFrostedIce;
+import net.minecraft.block.SoundType;
+import net.minecraft.block.material.Material;
 import net.minecraft.block.state.IBlockState;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.util.math.MathHelper;
@@ -12,6 +14,17 @@ import java.util.Random;
  * disappears instead of turning to water. */
 public class BlockDryFrostedIce extends BlockFrostedIce {
 
+	public BlockDryFrostedIce(){
+		super();
+		setDefaultSlipperiness(0.98f); // For some strange reason BlockFrostedIce overrides BlockIce's icy-ness...
+		setSoundType(SoundType.GLASS);
+	}
+
+	@Override
+	public Material getMaterial(IBlockState state){
+		return Material.ICE; // For goodness sake
+	}
+
 	@Override
 	protected void turnIntoWater(World world, BlockPos pos){
 		world.destroyBlock(pos, false);

src/main/java/electroblob/wizardry/block/BlockPermafrost.java

@@ -1,22 +1,57 @@
 package electroblob.wizardry.block;
 
-import net.minecraft.block.Block;
-import net.minecraft.block.material.Material;
+import electroblob.wizardry.registry.Spells;
+import electroblob.wizardry.registry.WizardryPotions;
+import electroblob.wizardry.spell.Spell;
+import electroblob.wizardry.util.EntityUtils;
 import net.minecraft.block.state.IBlockState;
 import net.minecraft.entity.Entity;
+import net.minecraft.entity.EntityLivingBase;
+import net.minecraft.potion.PotionEffect;
+import net.minecraft.util.DamageSource;
+import net.minecraft.util.math.AxisAlignedBB;
 import net.minecraft.util.math.BlockPos;
+import net.minecraft.util.math.MathHelper;
 import net.minecraft.world.IBlockAccess;
+import net.minecraft.world.World;
 
 import javax.annotation.Nullable;
 
-public class BlockPermafrost extends Block {
+public class BlockPermafrost extends BlockDryFrostedIce {
 
-	public BlockPermafrost(){
-		super(Material.ICE);
+	protected static final AxisAlignedBB BOUNDING_BOX = new AxisAlignedBB(0, 0, 0, 1, 0, 1);
+	protected static final AxisAlignedBB SELECTION_BOUNDING_BOX = new AxisAlignedBB(0, 0, 0, 1, 0.125, 1);
+
+	@Override
+	public AxisAlignedBB getBoundingBox(IBlockState state, IBlockAccess source, BlockPos pos){
+		return BOUNDING_BOX;
 	}
 
 	@Override
-	public float getSlipperiness(IBlockState state, IBlockAccess world, BlockPos pos, @Nullable Entity entity){
-		return super.getSlipperiness(state, world, pos, entity);
+	public AxisAlignedBB getSelectedBoundingBox(IBlockState state, World worldIn, BlockPos pos){
+		return SELECTION_BOUNDING_BOX;
+	}
+
+	@Nullable
+	@Override
+	public AxisAlignedBB getCollisionBoundingBox(IBlockState blockState, IBlockAccess worldIn, BlockPos pos){
+		return super.getCollisionBoundingBox(blockState, worldIn, pos);
+	}
+
+	@Override
+	public boolean isFullCube(IBlockState state){
+		return false;
+	}
+
+	@Override
+	public void onEntityCollision(World world, BlockPos pos, IBlockState state, Entity entity){
+
+		if(EntityUtils.isLiving(entity) && entity.ticksExisted % 30 == 0){
+			// Can't make it player damage unless we make this block a tile entity, but there will be too many for that
+			entity.attackEntityFrom(DamageSource.MAGIC, Spells.permafrost.getProperty(Spell.DAMAGE).floatValue());
+			int duration = Spells.permafrost.getProperty(Spell.EFFECT_DURATION).intValue();
+			int amplifier = Spells.permafrost.getProperty(Spell.EFFECT_STRENGTH).intValue();
+			((EntityLivingBase)entity).addPotionEffect(new PotionEffect(WizardryPotions.frost, duration, amplifier));
+		}
 	}
 }