GT6 style concrete speedup (no soulsand like behavior that blocks you from entrances and less OP ice hyperspeed highways)

src/main/java/gregtech/api/interfaces/IBlockOnWalkOver.java

@@ -0,0 +1,8 @@
+package gregtech.api.interfaces;
+
+import net.minecraft.entity.EntityLivingBase;
+import net.minecraft.world.World;
+
+public interface IBlockOnWalkOver {
+    public void onWalkOver(EntityLivingBase aEntity, World aWorld, int aX, int aY, int aZ);
+}

src/main/java/gregtech/common/GT_Proxy.java

@@ -11,6 +11,7 @@ import cpw.mods.fml.common.registry.GameRegistry;
 import gregtech.api.GregTech_API;
 import gregtech.api.enums.*;
 import gregtech.api.enums.TC_Aspects.TC_AspectStack;
+import gregtech.api.interfaces.IBlockOnWalkOver;
 import gregtech.api.interfaces.IProjectileItem;
 import gregtech.api.interfaces.internal.IGT_Mod;
 import gregtech.api.interfaces.internal.IThaumcraftCompat;
@@ -25,6 +26,7 @@ import gregtech.common.entities.GT_Entity_Arrow;
 import gregtech.common.items.GT_MetaGenerated_Tool_01;
 import gregtech.common.items.armor.ModularArmor_Item;
 import gregtech.common.items.armor.gui.*;
+import net.minecraft.block.Block;
 import net.minecraft.enchantment.Enchantment;
 import net.minecraft.enchantment.EnchantmentHelper;
 import net.minecraft.entity.Entity;
@@ -45,6 +47,7 @@ import net.minecraft.nbt.NBTTagCompound;
 import net.minecraft.potion.Potion;
 import net.minecraft.tileentity.TileEntity;
 import net.minecraft.util.DamageSource;
+import net.minecraft.util.MathHelper;
 import net.minecraft.world.ChunkCoordIntPair;
 import net.minecraft.world.World;
 import net.minecraft.world.WorldSettings.GameType;
@@ -53,6 +56,7 @@ import net.minecraftforge.common.MinecraftForge;
 import net.minecraftforge.event.ForgeEventFactory;
 import net.minecraftforge.event.entity.EntityJoinWorldEvent;
 import net.minecraftforge.event.entity.living.EnderTeleportEvent;
+import net.minecraftforge.event.entity.living.LivingEvent.LivingUpdateEvent;
 import net.minecraftforge.event.entity.player.ArrowLooseEvent;
 import net.minecraftforge.event.entity.player.ArrowNockEvent;
 import net.minecraftforge.event.entity.player.PlayerEvent;
@@ -1197,6 +1201,15 @@ public abstract class GT_Proxy implements IGT_Mod, IGuiHandler, IFuelHandler {
             e.printStackTrace(GT_Log.err);
         }
     }
+    
+    @SubscribeEvent
+    public void onLivingUpdate(LivingUpdateEvent aEvent) {
+        if (aEvent.entityLiving.onGround) {
+            int tX = MathHelper.floor_double(aEvent.entityLiving.posX), tY = MathHelper.floor_double(aEvent.entityLiving.boundingBox.minY-0.001F), tZ = MathHelper.floor_double(aEvent.entityLiving.posZ);
+            Block tBlock = aEvent.entityLiving.worldObj.getBlock(tX, tY, tZ);
+            if (tBlock instanceof IBlockOnWalkOver) ((IBlockOnWalkOver)tBlock).onWalkOver(aEvent.entityLiving, aEvent.entityLiving.worldObj, tX, tY, tZ);
+        }
+    }
 
     @SubscribeEvent
     public void onFluidContainerRegistration(FluidContainerRegistry.FluidContainerRegisterEvent aFluidEvent) {

src/main/java/gregtech/common/blocks/GT_Block_Concretes.java

@@ -2,6 +2,7 @@ package gregtech.common.blocks;
 
 import gregtech.api.enums.Materials;
 import gregtech.api.enums.OrePrefixes;
+import gregtech.api.interfaces.IBlockOnWalkOver;
 import gregtech.api.util.GT_LanguageManager;
 import gregtech.api.util.GT_OreDictUnificator;
 import net.minecraft.block.Block;
@@ -16,11 +17,11 @@ import net.minecraft.world.World;
 import net.minecraftforge.fluids.IFluidBlock;
 
 public class GT_Block_Concretes
-        extends GT_Block_Stones_Abstract {
+        extends GT_Block_Stones_Abstract implements IBlockOnWalkOver{
     public GT_Block_Concretes() {
         super(GT_Item_Concretes.class, "gt.blockconcretes");
         setResistance(20.0F);
-        this.slipperiness = 0.9F;
+        //this.slipperiness = 0.9F;
         GT_LanguageManager.addStringLocalization(getUnlocalizedName() + ".0.name", "Dark Concrete");
         GT_LanguageManager.addStringLocalization(getUnlocalizedName() + ".1.name", "Dark Concrete Cobblestone");
         GT_LanguageManager.addStringLocalization(getUnlocalizedName() + ".2.name", "Mossy Dark Concrete Cobblestone");
@@ -70,6 +71,15 @@ public class GT_Block_Concretes
         return gregtech.api.enums.Textures.BlockIcons.CONCRETES[0].getIcon();
     }
 
+    @Override
+    public void onWalkOver(EntityLivingBase aEntity, World aWorld, int aX, int aY, int aZ) {
+        if ((aEntity.motionX != 0 || aEntity.motionZ != 0) && !aEntity.isInWater() && !aEntity.isWet() && !aEntity.isSneaking()) {
+            double tSpeed = (aWorld.getBlock(aX, aY-1, aZ).slipperiness >= 0.8 ? 1.5 : 1.2);
+            aEntity.motionX *= tSpeed; aEntity.motionZ *= tSpeed;
+        }
+    }
+
+    /**
     public void onEntityCollidedWithBlock(World aWorld, int aX, int aY, int aZ, Entity aEntity) {
         Block tBlock = aWorld.getBlock(aX, aY + 1, aZ);
         if (((aEntity instanceof EntityLivingBase)) && (!(tBlock instanceof IFluidBlock)) && (!(tBlock instanceof BlockLiquid)) && (aEntity.onGround) && (!aEntity.isInWater()) && (!aEntity.isWet())) {
@@ -92,4 +102,5 @@ public class GT_Block_Concretes
         }
         return AxisAlignedBB.getBoundingBox(aX, aY, aZ, aX + 1, aY + 0.875D, aZ + 1);
     }
+	**/
 }