3. Pygame Collision Detection

def doRectsOverlap(rect1,rect2):
   for a,b in [(rect1,rect2),(rect2,rect1)]:
      # Check if a's corners are inside b
      if ((isPointInsideRect(a.left,a.top,b)) or (isPointInsideRect(a.left,a.bottom,b)) or (isPointInsideRect(a.right,a.top,b)) or (isPointInsideRect(a.right,a.bottom,b))):
         return True

   return False

def isPointInsideRect(x,y,rect):
   if (x > rect.left) and (x < rect.right) and (y > rect.top) and (y < rect.bottom):
      return True
   else:
      return False

from browser import load, document,timer load('../../_static/game.js') load('../../_static/pygame.brython.js') ^^^^ import pygame, sys , time from pygame.locals import * from pygame.color import * import random #set up the colors BLACK = Color(0,0,0) WHITE = Color(255,255,255) RED = Color(255,0,0) GREEN = Color(0,255,0) BLUE = Color(0,0,255) LIGHT_BLUE= Color(153,255,255) # set up pygame pygame.init() #set up fonts rectFont = pygame.font.SysFont('timesnewroman',10) pointFont = pygame.font.SysFont('timesnewroman',10) # set up the window WINDOWWIDTH = 560 WINDOWHEIGHT = 350 windowSurface = pygame.display.set_mode((WINDOWWIDTH,WINDOWHEIGHT),0,32) def doRectsOverlap(rect1,rect2): for a,b in [(rect1,rect2),(rect2,rect1)]: # Check if a's corners are inside b if ((isPointInsideRect(a.left,a.top,b)) or (isPointInsideRect(a.left,a.bottom,b)) or (isPointInsideRect(a.right,a.top,b)) or (isPointInsideRect(a.right,a.bottom,b))): return True return False def isPointInsideRect(x,y,rect): if (x > rect.left) and (x < rect.right) and (y > rect.top) and (y < rect.bottom): return True else: return False #define 4 rectangles r1 = {'rect':pygame.Rect(300,80,50,50),'name':"Rect1",'color':RED} r2 = {'rect':pygame.Rect(250,200,60,60),'name':"Rect2",'color':GREEN} r3 = {'rect':pygame.Rect(100,150,80,40),'name':"Rect3",'color':BLUE} r4 = {'rect':pygame.Rect(200,150,60,70),'name':"Rect4",'color':LIGHT_BLUE} rects = [r1,r2,r3,r4] windowSurface.fill(BLACK) #draw rectangles for r in rects: pygame.draw.rect(windowSurface, r['color'], r['rect']) text = rectFont.render(r['name'], False, BLACK, r['color']) textRect = text.get_rect() textRect.centerx = r['rect'].left + (r['rect'].width)//2 textRect.centery = r['rect'].top + (r['rect'].height)//2 windowSurface.blit(text, textRect) #draw random points point_size = 5 num_points = 10 points = [] for i in range(num_points): points.append({'pos':(random.randint(0,WINDOWWIDTH - point_size*10),random.randint(0,WINDOWHEIGHT - point_size*10)),'name':("P"+str(i))}) for p in points: pygame.draw.circle(windowSurface, WHITE, p['pos'], point_size, 0) text = pointFont.render(p['name'], False, WHITE, BLACK) textRect = text.get_rect() textRect.centerx = p['pos'][0] textRect.centery = p['pos'][1] - (point_size +5) windowSurface.blit(text, textRect) #check overlap between rectangles rects_copy = rects.copy() for rect1 in rects: for rect2 in rects_copy: if(rect1['name']!=rect2['name']): if(doRectsOverlap(rect1['rect'],rect2['rect'])): print("{} and {} are overlapping.\n".format(rect1['name'],rect2['name'])) rects_copy.remove(rect1) # check if any point is inside a rectangles for p in points: for rect in rects: if(isPointInsideRect(p['pos'][0], p['pos'][1], rect['rect'])): print("Point {} is inside rectangle {}".format(p['name'], rect['name']))

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