ViaRewind

ViaRewind makes players to send PacketPlayInArmAnimation on post (normally sent on pre) when u place or break blocks.

ViaRewind/core/src/main/java/de/gerrygames/viarewind/protocol/protocol1_8to1_9/packets/PlayerPackets.java

Lines 563 to 575 in 80fd245

    
           packetWrapper.cancel(); 
        
           final PacketWrapper delayedPacket = new PacketWrapper(0x1A, null, packetWrapper.user()); 
        
           delayedPacket.write(Type.VAR_INT, 0);  //Main Hand 
        
           //delay packet in order to deal damage to entities 
        
           //the cooldown value gets reset by this packet 
        
           //1.8 sends it before the use entity packet 
        
           //1.9 afterwards 
        
           Protocol1_8TO1_9.TIMER.schedule(new TimerTask() { 
        
           	@Override 
        
           	public void run() { 
        
           		PacketUtil.sendToServer(delayedPacket, Protocol1_8TO1_9.class); 
        
           	} 
        
           }, 5);

You're welcome to PR a better solution for this issue.

InArmAnimation when placing or breaking block is sent on pre every version of minecraft.

But the order of packets when hitting entities has changed. There is no information in the animation packet on which action it was triggered by.

I'm unsure if it changed attackEntity is still called pre in 1.12.2 source

Also protocolsupport causes no issues with this, only ViaRewind.

Also protocolsupport causes no issues with this, only ViaRewind.

Protocolsupport does not show tools attack cooldown to 1.8.9- player. I think that is why.

	packetWrapper.cancel();
	final PacketWrapper delayedPacket = new PacketWrapper(0x1A, null, packetWrapper.user());
	delayedPacket.write(Type.VAR_INT, 0); //Main Hand
	//delay packet in order to deal damage to entities
	//the cooldown value gets reset by this packet
	//1.8 sends it before the use entity packet
	//1.9 afterwards
	Protocol1_8TO1_9.TIMER.schedule(new TimerTask() {
	@Override
	public void run() {
	PacketUtil.sendToServer(delayedPacket, Protocol1_8TO1_9.class);
	}
	}, 5);

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