Add InputUpdateEvent (#4356)

patches/minecraft/net/minecraft/client/entity/EntityPlayerSP.java.patch

@@ -89,7 +89,15 @@
      }
  
      public boolean func_70613_aW()
-@@ -859,10 +880,13 @@
+@@ -840,6 +861,7 @@
+         float f = 0.8F;
+         boolean flag2 = this.field_71158_b.field_192832_b >= 0.8F;
+         this.field_71158_b.func_78898_a();
++        net.minecraftforge.client.ForgeHooksClient.onInputUpdate(this, this.field_71158_b);
+         this.field_71159_c.func_193032_ao().func_193293_a(this.field_71158_b);
+ 
+         if (this.func_184587_cr() && !this.func_184218_aH())
+@@ -859,10 +881,13 @@
          }
  
          AxisAlignedBB axisalignedbb = this.func_174813_aQ();

src/main/java/net/minecraftforge/client/ForgeHooksClient.java

@@ -81,6 +81,7 @@ import net.minecraft.tileentity.TileEntity;
 import net.minecraft.util.BlockRenderLayer;
 import net.minecraft.util.EnumFacing;
 import net.minecraft.util.EnumHand;
+import net.minecraft.util.MovementInput;
 import net.minecraft.util.ResourceLocation;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.util.math.MathHelper;
@@ -94,6 +95,7 @@ import net.minecraftforge.client.event.DrawBlockHighlightEvent;
 import net.minecraftforge.client.event.EntityViewRenderEvent;
 import net.minecraftforge.client.event.FOVUpdateEvent;
 import net.minecraftforge.client.event.GuiScreenEvent;
+import net.minecraftforge.client.event.InputUpdateEvent;
 import net.minecraftforge.client.event.ModelBakeEvent;
 import net.minecraftforge.client.event.MouseEvent;
 import net.minecraftforge.client.event.RenderGameOverlayEvent;
@@ -730,4 +732,9 @@ public class ForgeHooksClient
         if(!tr.equals(TRSRTransformation.identity())) mat = tr.getMatrix();
         return Pair.of(model, mat);
     }
+
+    public static void onInputUpdate(EntityPlayer player, MovementInput movementInput)
+    {
+        MinecraftForge.EVENT_BUS.post(new InputUpdateEvent(player, movementInput));
+    }
 }

src/main/java/net/minecraftforge/client/event/InputUpdateEvent.java

@@ -0,0 +1,26 @@
+package net.minecraftforge.client.event;
+
+import net.minecraft.entity.player.EntityPlayer;
+import net.minecraft.util.MovementInput;
+import net.minecraftforge.event.entity.player.PlayerEvent;
+
+/**
+ * This event is fired after player movement inputs are updated.<br>
+ * Handlers can freely manipulate {@link MovementInput} to cancel movement.<br>
+ */
+public class InputUpdateEvent extends PlayerEvent
+{
+    private final MovementInput movementInput;
+
+    public InputUpdateEvent(EntityPlayer player, MovementInput movementInput)
+    {
+        super(player);
+        this.movementInput = movementInput;
+    }
+
+    public MovementInput getMovementInput()
+    {
+        return movementInput;
+    }
+
+}

src/test/java/net/minecraftforge/debug/InputUpdateEventTest.java

@@ -0,0 +1,48 @@
+package net.minecraftforge.debug;
+
+import net.minecraft.block.state.IBlockState;
+import net.minecraft.entity.player.EntityPlayer;
+import net.minecraft.init.Blocks;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.util.math.MathHelper;
+import net.minecraft.util.text.TextComponentString;
+import net.minecraftforge.client.event.InputUpdateEvent;
+import net.minecraftforge.fml.common.Mod;
+import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
+import net.minecraftforge.fml.relauncher.Side;
+
+@Mod(modid = InputUpdateEventTest.MODID, name = "InputUpdateTest", version = "1.0", acceptableRemoteVersions = "*")
+public class InputUpdateEventTest
+{
+    static final String MODID = "input_update_test";
+
+    @Mod.EventBusSubscriber(value = Side.CLIENT, modid = MODID)
+    public static class Registration
+    {
+        @SubscribeEvent
+        public static void onInputUpdate(InputUpdateEvent evt)
+        {
+            EntityPlayer player = evt.getEntityPlayer();
+            final int x = MathHelper.floor(player.posX);
+            final int y = MathHelper.floor(player.getEntityBoundingBox().minY) - 1;
+            final int z = MathHelper.floor(player.posZ);
+            final BlockPos pos = new BlockPos(x, y, z);
+            IBlockState blockUnder = player.world.getBlockState(pos);
+            if (blockUnder.getBlock() == Blocks.BLACK_GLAZED_TERRACOTTA)
+            {
+                if (evt.getMovementInput().jump)
+                {
+                    player.sendMessage(new TextComponentString("NO JUMPING!"));
+                    evt.getMovementInput().jump = false;
+                }
+
+                if (evt.getMovementInput().sneak)
+                {
+                    player.sendMessage(new TextComponentString("NO SNEAKING!"));
+                    evt.getMovementInput().sneak = false;
+                }
+            }
+        }
+    }
+
+}