move - How to get Python turtle to stop trying to catch up the turtle it's following? -


i making game in turtle python, 1 turtle (called lewi) follows (called ella). now, goal of game ella, slower lewi, should follow lewi. lewi moves according presses of arrow keys.

ella follow lewi, problem if, say, press 'right' key twice or more before ella has arrived lewi's position, , later let catch position, start moving of previous positions failed catch lewi, , goes on go of lewi's positions missed.

ella shouldn't retracing steps, how fix problem? here code:

import turtle  image = "c:/python27/pythonprogramming/image.gif" screenr = turtle.screen()  lewi = turtle.turtle() ella = turtle.turtle()  screenr.addshape(image) lewi.shape(image)  screenr.bgpic("winxp.gif") screenr.setup(1279, 815)    lewi.penup() speed = 50  def up():     lewi.sety(lewi.ycor()+speed)     ella.speed(1)     ella.goto(lewi.pos())     if ella.pos() == lewi.pos():         print("loo")  def down():     lewi.sety(lewi.ycor()-speed)     ella.speed(1)        ella.goto(lewi.pos())        if ella.pos() == lewi.pos():         print("loo")  def left():     lewi.forward(-speed)     ella.speed(1)     ella.goto(lewi.pos())     if ella.pos() == lewi.pos():         print("loo")  def right():     lewi.forward(speed)     ella.speed(1)     ella.goto(lewi.pos())     if ella.pos() == lewi.pos():         print("loo")    screenr.onkey(up, "up") screenr.onkey(down, "down") screenr.onkey(right, "right") screenr.onkey(left, "left") screenr.listen()  turtle.mainloop()

i believe problem ella dependent on lewi motion. if make independent, running on timer event, can react lewi's motion , chase him more naturally. also, since you'll hitting motion keys rapidly , repeatedly, i've changed handlers block out hits while current hit being processed. i've changed handlers set heading , move forward:

from turtle import turtle, screen  screen = screen()  lewi = turtle(shape="turtle") lewi.color("red") lewi.penup()  ella = turtle(shape="turtle") ella.color("green") ella.speed("slowest")  screen.setup(1279, 815)  speed = 20  def up():     screen.onkey(none, "up")     lewi.setheading(90)     lewi.forward(speed)     screen.onkey(up, "up")  def down():     screen.onkey(none, "down")     lewi.setheading(270)     lewi.forward(speed)     screen.onkey(down, "down")  def left():     screen.onkey(none, "left")     lewi.setheading(180)     lewi.forward(speed)     screen.onkey(left, "left")  def right():     screen.onkey(none, "right")     lewi.setheading(0)     lewi.forward(speed)     screen.onkey(right, "right")  def move_ella():     if ella.pos() != lewi.pos():         ella.setheading(ella.towards(lewi))         ella.forward(speed)     screen.ontimer(move_ella, 200)  screen.onkey(up, "up") screen.onkey(down, "down") screen.onkey(right, "right") screen.onkey(left, "left")  screen.listen()  screen.ontimer(move_ella, 200)  screen.mainloop()

i removed image information example can run -- can put images code.

enter image description here

if want ella follow exact same path lewi, @ slower pace, can done. indicate such , i'll update example.


Comments

Post a Comment

Popular posts from this blog

asynchronous - C# WinSCP .NET assembly: How to upload multiple files asynchronously -

i using winscp .net assembly uploading files. want upload multiple files asynchronous way. have created method works single upload. public class uploadingdata { private sessionoptions _sessionoptions; private session _session; //connection etc private void onconnected() { foreach (var fileinfo in localfileslist) { var task = task.factory.startnew(() => uploadfilesasync(fileinfo)); } } private async task uploadfilesasync(string file) { string remotefilepath = _session.translatelocalpathtoremote(file, @"/", "/test_data_upload"); var uploading = _session.putfiles(file, remotefilepath, false); //when done await task.run(() => thread.sleep(1000)); } } please suggest me correct way. thanks you can use backgroundworker class this: string[] images = new string[50]; foreach (var path in images) { backgroundworker
Read more

aws api gateway - SerializationException in posting new Records via Dynamodb Proxy Service in API -

i getting "__type": "com.amazon.coral.service#serializationexception" as reply in postman & in test console in api gateway trying post record directly dynamodb using api proxy services.. referring aws article - https://aws.amazon.com/blogs/compute/using-amazon-api-gateway-as-a-proxy-for-dynamodb/ here's mapping { "tablename": "tablenamegoeshere", "item": { "id" : "$context.requestid" "eventname" : "$input.path('$.eventname')", "timestamp" : $input.path('$.timestamp'), "answers": "$util.parsejson($input.path('$.answers'))" } } update: did asked ... , worked if try add array of json objects gives me above same error - here's trying now. please - couldnt find on google well #set($inputroot = $input.path('$')) { "tablename": "answer", "item": {
Read more

asp.net - Problems sending emails from forum -

i have been redesigning site has message board, has been written guy looked after site. it has few problems , written in .asp , uses .mdb files database. you can see whole thing here . feel free post if helps, test thing have set using original files , new database. the basic problem when posts message, supposed email sent them, have posted it. when replies, originator supposed message, replier has been posted. i’d have thought @ point in process there should script/file in postmessage.asp? the postmessage.asp page below. <% option explicit %> <!-- #include virtual="common/adovbs.inc" --> <html> <head> <meta http-equiv="content-type" content="text/html; charset=windows-1252"> <meta name="generator" content="microsoft frontpage 4.0"> <meta name="progid" content="frontpage.editor.document"> <title>new page 2</title> <base target="_self"
Read more