Blast modifier support for permafrost, plus various fixes and an attempt at slipperiness

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

@@ -4,14 +4,15 @@ 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.BlockFaceShape;
 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.EnumFacing;
 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;
 
@@ -43,6 +44,16 @@ public class BlockPermafrost extends BlockDryFrostedIce {
 		return false;
 	}
 
+	@Override
+	public boolean isNormalCube(IBlockState state){
+		return false;
+	}
+
+	@Override
+	public BlockFaceShape getBlockFaceShape(IBlockAccess world, IBlockState state, BlockPos pos, EnumFacing face){
+		return face == EnumFacing.DOWN ? BlockFaceShape.SOLID : BlockFaceShape.UNDEFINED;
+	}
+
 	@Override
 	public void onEntityCollision(World world, BlockPos pos, IBlockState state, Entity entity){
 
@@ -53,5 +64,28 @@ public class BlockPermafrost extends BlockDryFrostedIce {
 			int amplifier = Spells.permafrost.getProperty(Spell.EFFECT_STRENGTH).intValue();
 			((EntityLivingBase)entity).addPotionEffect(new PotionEffect(WizardryPotions.frost, duration, amplifier));
 		}
+
+		// EntityLivingBase's slipperiness code doesn't get the block below it properly so slipperiness only works for
+		// full blocks...
+		if(entity.onGround){
+
+			// Not brilliant but it's about the best I can do
+			entity.motionX *= 1.12 - entity.motionX * entity.motionX;
+			entity.motionZ *= 1.12 - entity.motionZ * entity.motionZ;
+
+//			if(entity instanceof EntityLivingBase){
+//				double maxVel = 0.8;
+//				double x = entity.motionX;
+//				double y = entity.motionY;
+//				double z = entity.motionZ;
+//				double vel = MathHelper.sqrt(x*x + y*y + z*z);
+//				double m = vel / maxVel;
+//				if(m > 1){
+//					entity.motionX /= m;
+//					entity.motionZ /= m;
+//				}
+//			}
+		}
+
 	}
 }

src/main/java/electroblob/wizardry/spell/Permafrost.java

@@ -1,5 +1,6 @@
 package electroblob.wizardry.spell;
 
+import electroblob.wizardry.constants.Constants;
 import electroblob.wizardry.item.SpellActions;
 import electroblob.wizardry.registry.WizardryBlocks;
 import electroblob.wizardry.registry.WizardryItems;
@@ -10,10 +11,13 @@ import electroblob.wizardry.util.SpellModifiers;
 import net.minecraft.entity.Entity;
 import net.minecraft.entity.EntityLivingBase;
 import net.minecraft.util.EnumFacing;
+import net.minecraft.util.SoundEvent;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.util.math.Vec3d;
 import net.minecraft.world.World;
 
+import java.util.List;
+
 public class Permafrost extends SpellRay {
 
 	public Permafrost(){
@@ -25,6 +29,21 @@ public class Permafrost extends SpellRay {
 		this.ignoreLivingEntities(true);
 	}
 
+	@Override
+	protected SoundEvent[] createSounds(){
+		return this.createContinuousSpellSounds();
+	}
+
+	@Override
+	protected void playSound(World world, EntityLivingBase entity, int ticksInUse, int duration, SpellModifiers modifiers, String... sounds){
+		this.playSoundLoop(world, entity, ticksInUse);
+	}
+
+	@Override
+	protected void playSound(World world, double x, double y, double z, int ticksInUse, int duration, SpellModifiers modifiers, String... sounds){
+		this.playSoundLoop(world, x, y, z, ticksInUse, duration);
+	}
+
 	@Override
 	protected boolean onEntityHit(World world, Entity target, Vec3d hit, EntityLivingBase caster, Vec3d origin, int ticksInUse, SpellModifiers modifiers){
 		return false;
@@ -33,19 +52,44 @@ public class Permafrost extends SpellRay {
 	@Override
 	protected boolean onBlockHit(World world, BlockPos pos, EnumFacing side, Vec3d hit, EntityLivingBase caster, Vec3d origin, int ticksInUse, SpellModifiers modifiers){
 
-		if(side == EnumFacing.UP && world.getBlockState(pos).isSideSolid(world, pos, EnumFacing.UP)
-				&& BlockUtils.canBlockBeReplaced(world, pos.up())){
+		boolean flag = false;
+
+		if(!world.isRemote){
+
+			int blastUpgradeCount = (int)((modifiers.get(WizardryItems.blast_upgrade) - 1) / Constants.BLAST_RADIUS_INCREASE_PER_LEVEL + 0.5f);
+			// Results in the following patterns:
+			// 0 blast upgrades: single block
+			// 1 blast upgrade: 3x3 without corners or edges
+			// 2 blast upgrades: 3x3 with corners
+			// 3 blast upgrades: 5x5 without corners or edges
+			float radius = 0.5f + 0.73f * blastUpgradeCount;
 
 			int duration = (int)(getProperty(DURATION).floatValue() * modifiers.get(WizardryItems.duration_upgrade));
 
-			if(!world.isRemote && BlockUtils.canPlaceBlock(caster, world, pos.up())){
-				world.setBlockState(pos.up(), WizardryBlocks.permafrost.getDefaultState());
-				world.scheduleUpdate(pos.up().toImmutable(), WizardryBlocks.permafrost, duration);
+			List<BlockPos> sphere = BlockUtils.getBlockSphere(pos.up(), radius);
+
+			for(BlockPos pos1 : sphere){
+				flag |= tryToPlaceIce(world, pos1, caster, duration);
 			}
 
-			return true;
+			return flag;
+
 		}
-		
+
+		return true;
+
+	}
+
+	private boolean tryToPlaceIce(World world, BlockPos pos, EntityLivingBase caster, int duration){
+
+		if(world.getBlockState(pos.down()).isSideSolid(world, pos.down(), EnumFacing.UP) && BlockUtils.canBlockBeReplaced(world, pos)){
+			if(BlockUtils.canPlaceBlock(caster, world, pos)){
+				world.setBlockState(pos, WizardryBlocks.permafrost.getDefaultState());
+				world.scheduleUpdate(pos.toImmutable(), WizardryBlocks.permafrost, duration);
+				return true;
+			}
+		}
+
 		return false;
 	}