edgrt

Thanks, that was the problem. Now.. Im probably getting acceleration wrong way

Thanks for curing me, doc.

I was looking through code if I could find variable which could give me entity acceleration. I tried to calculate it by checking previous tick velocity (motionX/Y/Z) and current velocity in tick event but getting crash while loading game. Im new in modding. Vec3d prevmotion = new Vec3d(0,0,0); @SubscribeEvent public void onPlayerTick(TickEvent.PlayerTickEvent event) { EntityPlayerSP player = mc.thePlayer; System.out.println((prevmotion.xCoord - player.motionX) + " "+ (prevmotion.yCoord - player.motionY)+" "+(prevmotion.zCoord - player.motionZ)); prevmotion = new Vec3d(player.motionX,player.motionY,player.motionZ); } Error: Description: Ticking player java.lang.NullPointerException: Ticking player at aimbow.AimbowGui.onPlayerTick(AimbowGui.java:96) at net.minecraftforge.fml.common.eventhandler.ASMEventHandler_7_AimbowGui_onPlayerTick_PlayerTickEvent.invoke(.dynamic) at net.minecraftforge.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:90) at net.minecraftforge.fml.common.eventhandler.EventBus.post(EventBus.java:185) at net.minecraftforge.fml.common.FMLCommonHandler.onPlayerPreTick(FMLCommonHandler.java:360) at net.minecraft.entity.player.EntityPlayer.onUpdate(EntityPlayer.java:215) at net.minecraft.entity.player.EntityPlayerMP.onUpdateEntity(EntityPlayerMP.java:345) at net.minecraft.network.NetHandlerPlayServer.update(NetHandlerPlayServer.java:176) at net.minecraftforge.fml.common.network.handshake.NetworkDispatcher$1.update(NetworkDispatcher.java:218) at net.minecraft.network.NetworkManager.processReceivedPackets(NetworkManager.java:309) at net.minecraft.network.NetworkSystem.networkTick(NetworkSystem.java:197) at net.minecraft.server.MinecraftServer.updateTimeLightAndEntities(MinecraftServer.java:818) at net.minecraft.server.MinecraftServer.tick(MinecraftServer.java:699) at net.minecraft.server.integrated.IntegratedServer.tick(IntegratedServer.java:156) at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:548) at java.lang.Thread.run(Unknown Source)