if tower_selected:
pygame.draw.circle(screen, (0, 0, 0), tower_selected.rect.center, tower_selected.range, 1)
pygame.draw.circle causing lag
Author
Im drawing a range around a tower in a tower defense game and its not going good.
tower_selected is True when you have clicked on a tower
Circles can be expensive if implemented using square roots, but not the extent that it halves your frame rate. Post your code. Are you using pygame.draw on an opengl surface or a software one? If its the former, try drawing the circle manually using opengl calls.
Author
I dont even know what an opengl surface is so im going to guess that im not using one.
The game is pretty far into development and there are alot of modules/image files so here is just the stuff that should be most useful. i could pm a link to the source code zip file download if thats necessary.
this is the code for the circle drawing and other things that might be useful
here is the turret module the only data that draw.circle uses from here is the range and rect center
so i dont see how this could be a problem
if you would like to download the whole running source code then i can post it and send you a link, just say so. it would be very appreciated!
thanks so much to anyone who can help with this circle.draw problem
The game is pretty far into development and there are alot of modules/image files so here is just the stuff that should be most useful. i could pm a link to the source code zip file download if thats necessary.
this is the code for the circle drawing and other things that might be useful
import a bunch of stuff thats importantfrom Values import *######main game loop#######def main(): '''Display settings''' screen = pygame.display.set_mode((750, 600)) #Resolution of screen ((x, y)) clock = pygame.time.Clock() #opens clock for fps##### the group all the turrets are being held in turrets = pygame.sprite.Group()# stuff goes into groups TurretSprites.Turret.groups = turrets, all # same as above turret_selected = None # nothing is selected while running: all.update() ##### Events ##### for event in pygame.event.get(): elif event.type == pygame.MOUSEBUTTONDOWN: # all the mouse events if event.button == 1: click = pygame.mouse.get_pos() # gets position of mouse when clicked ##### check if a turret was clicked ##### else: for t in turrets: if t.rect.collidepoint(click): turret_selected = t # so we can draw the tower stats down later else: # if we did not click on anykind of object turret_selected = None # deselect everything#skiping abunch of stuff ##### Update and draw everything ##### map1.draw(screen) # DO WORK SON! draws the tiled map background dirty = all.draw(screen) pygame.display.update(dirty) if turret_selected: pygame.draw.circle(screen, (0, 0, 0), turret_selected.rect.center, turret_selected.range, 1) # THE PROBLEM pygame.display.flip() clock.tick(50) #setting frame rate number = fpshere is the turret module the only data that draw.circle uses from here is the range and rect center
so i dont see how this could be a problem
import pygameclass Turret(pygame.sprite.Sprite): def __init__(self, position): pygame.sprite.Sprite.__init__(self, self.groups) self.image = pygame.image.load("Images/Towers/Basic Gun.png").convert() # get image self.image.set_colorkey(self.image.get_at((0, 0))) # transparent self.rect = self.image.get_rect() # get it, just get it self.rect.center = (position) # where should i go dear slavelord self.SHOOTING_TIMER = 100 # time between shots self.shooting_timer = 0 # start at 0 so we are loaded when tower is placed self.pick_target = False # not picking a target right now self.range = 100 # range in pixels #bunch of other turret stuff that isnt related to the issueif you would like to download the whole running source code then i can post it and send you a link, just say so. it would be very appreciated!
thanks so much to anyone who can help with this circle.draw problem
It's very slow to draw pixel by pixel on modern graphics hardware. If you can, draw the circle just once to a new surface and blit that each time you need it.
Author
sorry but could someone please give me an example of the best way to do this, im stumped.
turret_radius_image = pygame.Surface((turret_radius*2, turret_radius*2))turret_radius_image.draw.circle(params)...other code stuff...for t in turrets: if t.turret_selected: screen.blit(turret_radius_image, (turret_x, turret_y)
Another thing to consider with pygame (or really, anything based on SDL), is that it tends to be really really slow when hardware acceleration isn't on (or at least that was the case when I used it). You might check to make sure it's using DirectX instead of windib. Also, check if running in fullscreen with the pygame.HARDWARE flag is faster.
Also, vsync or imprecise timing code might be the cause -- are you dropping from 60fps to 30?
Also, vsync or imprecise timing code might be the cause -- are you dropping from 60fps to 30?
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