I'm creating a function that will cause a giraffe to move in a certain direction and distance (don't ask).
If the user types "west" in the parameters, the turtle should move west however the direction is. But the turtle's angle changes every time, I can't fix a value for my turtle to turn to go a certain direction.
I need to set the angle to, say, 90 so that it can move East. I can't find useful functions for this purpose. I tried to use Pen().degrees(90) but that didn't work. Does anyone know how I can do this?
You're looking for turtle.setheading()
>>> turtle.setheading(90)
>>> turtle.heading()
90.0
You can combine this with a simple dict to get exactly the result you are after.
turtle.right(90)
this will turn the turtle 90
Related
May I get an explanation about the turtle module command:
.goto(0, 0)
I know that this command moves the turtle but I'm trying to find out what these arguments inside the parentheses exactly mean, in details?
Thanks.. your help is much appreciated.
I believe that the first parameter is the x-coordinate and the second parameter is the y-coordinate. So, calling this function will move the turtle to whatever (x, y) point that you give it.
https://docs.python.org/3/library/turtle.html?highlight=goto#turtle.goto
I am having a huge issue using the turtle library. I have to write my initials AR for an assignment. Can anyone help?
import turtle
turtlescreen
turtle.pos(400,400)
turtle.forward()
Here is the code I am trying to use. I am trying to right my initial "AR" with it.
You've managed to cram three errors into four lines of code. First, you don't need this and it's an error:
turtlescreen
so toss it. Second, the pos() function returns the current turtle postion, not set it. So instead of:
turtle.pos(400,400)
You want:
turtle.setpos(400, 400)
and finally, as #Jamie notes, you need to pass a distance (in pixels) to forward(). So instead of:
turtle.forward()
Something like he suggests:
turtle.forward(15)
Complete code:
import turtle
turtle.setpos(400, 400)
turtle.forward(15)
turtle.done()
Your turtle.forward() requires an input variable in pixels. See the documentation for turtle.forward:
Move the turtle forward by the specified distance, in the direction the turtle is headed.
Try changing:
turtle.forward()
to something like:
turtle.forward(15)
There's a few mistakes I can see. Firstly, there is no command called turtlescreen so you can remove that. Next, instead of tom.pos try using tom.setpos(x, y) or tom.goto (x, y). Lastly, you should put a value in tom.forward (length). I also recommend going through the Python Turtle documentation, https://docs.python.org/3.3/library/turtle.html?highlight=turtle
I dont know how to change the size of a turtle hitbox in python turtle graphics
I haven't tried anything yet because I'm new, and know very little about this. I've tried googling it, though, but nothing popped up.
from turtle import *
import turtle
from random import randint
import time
screen = turtle.Screen()
screen.setup(1920, 1080)
player = turtle.Turtle()
I want to add a button that you have to click to start right here
The game starts right here :
wn = turtle.Screen()
last_pressed = 'up'
def setup(col, x, y, w, s, shape):
player.penup()
player.up()
player.goto(x,y)
player.width(w)
player.turtlesize(s)
player.color(col)
player.lt(90)
player.down()
wn.onkey(up, "s")
wn.onkey(left, "d")
wn.onkey(right, "a")
wn.onkey(back, "w")
wn.onkey(quitTurtles, "Escape")
wn.listen()
wn.mainloop()
This may not be exactly what you are looking for, but this might work in your situation.
Detecting collision in Python turtle game
This is a thread on collision detection between objects and with some tweaking of numbers you could increase the hitbox of the turtle using the abs() function
I dont know how to change the size of a turtle hitbox in python turtle graphics
What do you mean by "hitbox"? I'm not sure what you mean by that (and neither does Google, apparently).
Do you mean that you want a rectangular button to click on? If that's the case, you could use the tkinter module together with the turtle module to create a button to click. (But be aware that it's not always easy to get the tkinter and turtle modules to work together to do what you want.)
If you want a button to click on, but don't need a Tkinter button, you could just try creating a new turtle in the shape of a rectangle that intercepts mouse clicks with onclick(). You can see an example of this if you run:
python3 -m turtledemo
and select Examples >> colormixer from the main menubar.
Or, if by "hitbox" you mean how to detect when one turtle has intercepted another turtle (as in, one has come close enough to the other to be considered a "hit"), I suggest querying each turtle's location, then using the Pythagorean Theorem to calculate the distance from each other. If this distance is within a predetermined threshold, consider the hitbox as being "hit."
You can see an example of this by typing:
python3 -m turtle
(Pay attention to the yellow turtle as he tries to catch up to the other turtle.)
I apologize if this answer isn't quite what you're looking for, but I'm just not sure what you mean by "hitbox." Maybe you could clarify?
I just saw this question today (2 years too late i know), and was having a similar problem / question.
What I ended up doing was running 3 distance checks (as i had increased my object size by 3) which differed along the x-axis (width). So it would check the distance between the ball(turtle) and the paddle (any 3 points and if it was shorter than X it would trigger the collision mechanic.
so it was something like :
check the ball class' ball object, and see how far away it is from the paddle,
and if its either in the center, or 30 pixels to the left or right of the center then hit.
if
ball.ball.distance(pad.paddle(), pad.paddle.ycor()) < 30 or
ball.ball.distance(pad.paddle.xcor() - 30, pad.paddle.ycor()) < 30 or
ball.ball.distance(pad.paddle.xcor() + 30, pad.paddle.ycor()) < 30
I'm trying to make a game using turtle in python. I'm trying to code some sort of collision. My original idea is to have a variable be the location of a turtle so, for example, if turtle 1's location/coordinates are equal to that of turtle 2's the game ends. So in layman's terms I want to know if there is a way to turn the location of a turtle into a variable.
Use the pos method or other methods defined here to get the location of the turtle.
pos returns the position as a Vec2D vector. xcor and ycor return the current x and y coordinates of turtle as float.
Again this question is on PyParticles4.
Link to last question for reference
Comment if unclear...
I am working on a Shooter game, much like this, but on a flat land with a wall that varies it's height on every turn(something for fun in the game) and with 2 players,each with a cannon that can move some distance (there's a limit, and they can't move beyond a certain amount from their start position) on each turn(the player decides if he wishes to move).
My code so far(for the Bullet and Shooter)
class Bullet(PyParticles.Particle):
def hit(self,shooterlist):
for shoot in shooterlist:
#confusion
dist = math.hypot(dx,dy)
# other funcs to added
class Shooter:
def __init__(self,pos,size):
self.rect = pygame.Rect(pos,size)
# other funcs to added
My Problems
Collision of the bullet with the Shooter. Any Ideas on how to know when the bullet collides with the rect?
I have been advised by someone to look at all the points on the edge of the rect, and see if it is within the circle but it seems to be very slow.
I think something faster would be better..
..
..
Update:
The circle can have a rect around it, which if collides with the rect, I now know when the rect is close to the circle, maybe even touching it.. How do i move forward??(Thx to PygameNerd)
I am not sure what you mean by your question, but I thingk that you need the colliderect function.
rect.colliderect(rect): Return bool
Put this in the code somewhere, and if it returns true, have the ball explode.
You can run another test every time colliderect returns true. There are a few options for what that test can be. One is similar to the advice you already received but with the wall and circle switched. Check the points on the circumference of the circle to see if one of them collides with the wall using Rect.collidepoint. In pygame, you can get a list of circumference points by creating a Mask from the circle surface and running Mask.outline. You probably won't need every point, so you could get just every Nth point. In fact, you may only need the midpoints of the edges of the circle's rect, which you can get from the Rect object itself.
You're asking for precise collision, and that would give you pixel perfect collision detection between a circle and a rectangle. You may not need it in your game, though, so I suggest trying with just colliderect first. If you're interested in collision detection in pygame in general, there are a lot of options that are directly implemented in or based on functions described in the Mask and Sprite documentation.
You can use Rect.collidepoint with the center of the circle but make rect bigger
collide_rect = Rect(x - p.radius,y - p.radius,w + 2 * p.radius,h + 2 * p.radius)
if collide_rect.collide_point(p.pos):
# Collision Resolution