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+--- Thread: Collisions in Arrays (/thread-32946.html)
Collisions in Arrays - Prithak - Mar-18-2021
Forgive my incredibly good code buttttt......... The collision works for only one object? Why is that? Any solitions? Please help!
import pygame, sys
pygame.init()
clock = pygame.time.Clock()
screen = pygame.display.set_mode((1280,720))
pygame.display.set_caption("TheGame")
font = pygame.font.Font('C:\Windows\Fonts\Impact.ttf', 32)
class createVector:
def __init__(self, x, y, oldx, oldy):
self.x, self.y = x, y
offset = createVector(480,500,0,0)
class Player:
def __init__(self, x, y, w, h, speed):
self.x, self.y, self.w, self.h, self.speed = x, y, w, h, speed
def render(self, color):
pygame.draw.rect(screen, color, (self.x, self.y, self.w, self.h),0, 10)
class Object:
def __init__(self, x,y,w,h):
self.x, self.y, self.w, self.h = x, y, w, h
def render(self, off, color, thickness, corrad):
pygame.draw.rect(screen, color, (off.x + self.x, off.y + self.y, self.w, self.h), thickness, corrad)
def Collision(self, off, player):
if self.x + off.x < player.x + player.w and self.x + off.x + self.w > player.x and self.y + off.y < player.y + player.h and self.y + off.y + self.h > player.y:
off.x = off.oldx
off.y = off.oldy
else:
off.oldx = off.x
off.oldy = off.y
def displayText(text, x, y):
txtSur = font.render(text, True, (255,255,255))
screen.blit(txtSur, (x,y))
player = Player(1280/2 - 50, 720/2 - 50, 50, 50, 10)
obj = []
obj.append(Object(50, 100, 100, 50))
obj.append( Object(100, 200, 100, 50) )
left_clicking = False
while True:
screen.fill((20,20,20))
for event in pygame.event.get():
if event.type == pygame.QUIT:
pygame.quit()
sys.exit()
key = pygame.key.get_pressed()
mx, my = pygame.mouse.get_pos()
mx += offset.x
my += offset.y
left_clicking = False
mb = pygame.mouse.get_pressed()
if mb[0]:
obj.append( Object(mx, my, 100, 50) )
displayText(str(mx), 0, 0)
displayText(str(my), 100, 0)
if key[pygame.K_w] and moveUp:
offset.y += player.speed
player.y += 8
if key[pygame.K_s] and moveDown:
offset.y -= player.speed
player.y -= 8
if key[pygame.K_a] and moveLeft:
offset.x += player.speed
player.x += 8
if key[pygame.K_d] and moveRight:
offset.x -= player.speed
player.x -= 8
if key[pygame.K_ESCAPE]:
pygame.quit()
sys.exit
player.render((100,200,255))
player.x = 1280/2
player.y = 720/2
for i in range(len(obj)):
obj[i].render(offset, (100,100,100), 0, 10)
obj[i].Collision(offset, player)
pygame.display.flip()
clock.tick(60):)
RE: Collisions in Arrays - nilamo - Mar-18-2021
The issue is that one object didn't collide, so it set new values for oldx/oldy, so when the other object did collide, it set the offset's value to where the offset already was (since the other object just saved that position).
Instead, just have the collision return a True/False of whether it collided, and adjust the offset one time.
Check this out. I moved some things around, and now only change the offset if nothing collided. We do that by tracking where the offset should be based on movement, and then only using that new value if it wouldn't cause a collision.
import pygame
import sys
pygame.init()
clock = pygame.time.Clock()
screen = pygame.display.set_mode((1280, 720))
pygame.display.set_caption("TheGame")
font = pygame.font.Font('C:\Windows\Fonts\Impact.ttf', 32)
class createVector:
def __init__(self, x, y, oldx, oldy):
self.x, self.y = x, y
offset = createVector(480, 500, 0, 0)
class Player:
def __init__(self, x, y, w, h, speed):
self.x, self.y, self.w, self.h, self.speed = x, y, w, h, speed
def render(self, color):
pygame.draw.rect(
screen, color, (self.x, self.y, self.w, self.h), 0, 10)
class Object:
def __init__(self, x, y, w, h):
self.x, self.y, self.w, self.h = x, y, w, h
def render(self, off, color, thickness, corrad):
pygame.draw.rect(screen, color, (off.x + self.x, off.y +
self.y, self.w, self.h), thickness, corrad)
def Collision(self, off, player):
if (self.x + off.x < player.x + player.w
and self.x + off.x + self.w > player.x
and self.y + off.y < player.y + player.h
and self.y + off.y + self.h > player.y):
return True
return False
def displayText(text, x, y):
txtSur = font.render(text, True, (255, 255, 255))
screen.blit(txtSur, (x, y))
player = Player(1280/2 - 50, 720/2 - 50, 50, 50, 10)
obj = []
obj.append(Object(50, 100, 100, 50))
obj.append(Object(100, 200, 100, 50))
left_clicking = False
while True:
screen.fill((20, 20, 20))
key = pygame.key.get_pressed()
for event in pygame.event.get():
if event.type == pygame.QUIT or key[pygame.K_ESCAPE]:
pygame.quit()
sys.exit()
player.render((100, 200, 255))
player.x = 1280/2
player.y = 720/2
next_offset = createVector(offset.x, offset.y, 0, 0)
if key[pygame.K_w]:
next_offset.y += player.speed
if key[pygame.K_s]:
next_offset.y -= player.speed
if key[pygame.K_a]:
next_offset.x += player.speed
if key[pygame.K_d]:
next_offset.x -= player.speed
collision = False
for item in obj:
collision = item.Collision(next_offset, player) or collision
if not collision:
offset = next_offset
for item in obj:
item.render(offset, (100, 100, 100), 0, 10)
pygame.display.flip()
clock.tick(60)
RE: Collisions in Arrays - Prithak - Mar-19-2021
(Mar-18-2021, 07:00 PM)nilamo Wrote: The issue is that one object didn't collide, so it set new values for oldx/oldy, so when the other object did collide, it set the offset's value to where the offset already was (since the other object just saved that position).
Instead, just have the collision return a True/False of whether it collided, and adjust the offset one time.
Check this out. I moved some things around, and now only change the offset if nothing collided. We do that by tracking where the offset should be based on movement, and then only using that new value if it wouldn't cause a collision.import pygame import sys pygame.init() clock = pygame.time.Clock() screen = pygame.display.set_mode((1280, 720)) pygame.display.set_caption("TheGame") font = pygame.font.Font('C:\Windows\Fonts\Impact.ttf', 32) class createVector: def __init__(self, x, y, oldx, oldy): self.x, self.y = x, y offset = createVector(480, 500, 0, 0) class Player: def __init__(self, x, y, w, h, speed): self.x, self.y, self.w, self.h, self.speed = x, y, w, h, speed def render(self, color): pygame.draw.rect( screen, color, (self.x, self.y, self.w, self.h), 0, 10) class Object: def __init__(self, x, y, w, h): self.x, self.y, self.w, self.h = x, y, w, h def render(self, off, color, thickness, corrad): pygame.draw.rect(screen, color, (off.x + self.x, off.y + self.y, self.w, self.h), thickness, corrad) def Collision(self, off, player): if (self.x + off.x < player.x + player.w and self.x + off.x + self.w > player.x and self.y + off.y < player.y + player.h and self.y + off.y + self.h > player.y): return True return False def displayText(text, x, y): txtSur = font.render(text, True, (255, 255, 255)) screen.blit(txtSur, (x, y)) player = Player(1280/2 - 50, 720/2 - 50, 50, 50, 10) obj = [] obj.append(Object(50, 100, 100, 50)) obj.append(Object(100, 200, 100, 50)) left_clicking = False while True: screen.fill((20, 20, 20)) key = pygame.key.get_pressed() for event in pygame.event.get(): if event.type == pygame.QUIT or key[pygame.K_ESCAPE]: pygame.quit() sys.exit() player.render((100, 200, 255)) player.x = 1280/2 player.y = 720/2 next_offset = createVector(offset.x, offset.y, 0, 0) if key[pygame.K_w]: next_offset.y += player.speed if key[pygame.K_s]: next_offset.y -= player.speed if key[pygame.K_a]: next_offset.x += player.speed if key[pygame.K_d]: next_offset.x -= player.speed collision = False for item in obj: collision = item.Collision(next_offset, player) or collision if not collision: offset = next_offset for item in obj: item.render(offset, (100, 100, 100), 0, 10) pygame.display.flip() clock.tick(60)
THANK YOU!! That totally makes sense! I should have thought about that earlier. Anyways thank you so much!!