问题
Here is my code:
import pygame, sys
from pygame.locals import *
try:
import Android
except ImportError:
Android = None
try:
import pygame.mixer as mixer
except ImportError:
import android.mixer as mixer
pygame.init()
#Android to cross platform
if Android:
android.init()
android.map_key(android.KEYCODE_BACK, pygame.K_ESCAPE)
#Variables
score = 0
health = 100
#Colours
RED = (255 ,0 ,0)
BLACK = (0, 0, 0)
# Left Edge of rectangle, top, width, height
player_rect = pygame.Rect(540, 0, 32, 32)
enemy = pygame.image.load("monster.png")
size = width, height = 1276,650
screen = pygame.display.set_mode(size)
direction ="down"
# This is the score text
gamefont = pygame.font.Font(None, 30)
scoretext = gamefont.render('Player Score: '+ str(score), 2, [255,0,0])
boxsize=scoretext.get_rect()
scoreXpos=(width-boxsize[2])/2
scoreYpos=(height-boxsize[2])/2
screen.blit(scoretext, [scoreXpos,20])
# This is the health
gamefonts = pygame.font.Font(None, 30)
scoretexts = gamefonts.render('Player Health: '+ str(health), 2, [255,0,0])
boxsizes=scoretexts.get_rect()
scoreXposs=(width-boxsizes[2])/2
scoreYposs=(height-boxsizes[2])/2
screen.blit(scoretexts, [scoreXposs,20])
PAUSED = False
font = pygame.font.SysFont("serif", 72)
text_paused = font.render("PAUSED", True, (255, 0, 0))
sound = mixer.Sound('maintheme.ogg')
sound.play()
r = 0
bif = pygame.image.load("map5.png")
pygame.display.set_caption("Pygame 2D RPG !")
x,y=0,0
movex, movey=0,0
character="boy.png"
player=pygame.image.load(character).convert_alpha()
while True:
# --- events ---
for event in pygame.event.get():
if event.type == pygame.QUIT:
pygame.quit()
sys.exit()
if event.type==KEYDOWN:
if event.key == K_ESCAPE:
pygame.quit()
sys.exit()
elif event.key==K_q:
PAUSED = not PAUSED
if not PAUSED:
if event.type==KEYDOWN:
if event.key==K_a:
movex=-10
elif event.key==K_d:
movex=+10
elif event.key==K_w:
movey=-10
elif event.key==K_s:
movey=+10
if event.type==KEYUP:
if event.key==K_a:
movex=0
elif event.key==K_d:
movex=0
elif event.key==K_w:
movey=0
elif event.key==K_s:
movey=0
# Enemy
if direction == "down":
player_rect.centery += 1
elif direction == "up":
player_rect.centery -= 1
if player_rect.bottom > size[1]:
direction = "up"
if player_rect.top < 0:
direction = "down"
if not PAUSED:
x+=movex
y+=movey
print x,y
if x in range(680,702) and y in range(377,403): # This is the location of the tile.
bif = pygame.image.load("map6.png")
screen.fill((r,0,0))
screen.blit(bif,(0,0))
screen.blit(player,(x,y))
screen.blit(enemy, player_rect)
#pygame.draw.rect(screen, RED, player_rect)
screen.blit(scoretexts, [scoreYposs, 45])
scoretexts = gamefonts.render('Player Health: '+ str(health), 2, [25,25,112])
#health +=10
screen.blit(scoretext, [scoreYpos,70])
scoretext = gamefont.render('Player Score: '+ str(score), 2, [25,25,112])
#score +=10
if PAUSED:
screen.blit(text_paused, (100, 100))
pygame.display.update()
Now I was wondering if anybody knows how to do collision, for example is the player boy is touching the enemy monster then the health which is draw to the screen goes down. Thaks for your help!
回答1:
It is code from my answer to another question on stackoverflow with some modification made later.
I have collision detection here but it is not ideal.
Look for pygame.sprite.collide_rect(self.ball, self.player1)
It use rectangle area to detect collision
More collision detect functions on PyGame Sprite (rectangle, circle, with mask)
(move player1 (keys: W/S) or player2 (keys: ARROWS UP/DOWN) to make collision with ball)
ps.: player and ball required self.rect (pygame.Rect()) with position (self.rect.x, self.rect.y) and size (self.rect.width, self.rect.height) to can be used with pygame.sprite.collide_rect(). If you use PyGame Sprite to create player class (class Player(pygame.sprite.Sprite):) you don't have to create self.rect because Sprite already has self.rect - but you still have to change self.rect.x and self.rect.y as you move player.
import sys
import pygame
from pygame.locals import *
#----------------------------------------------------------------------
UP = 1
DOWN = 2
#----------------------------------------------------------------------
class Player():
def __init__(self, screen, x, y):
self.screen = screen
self.rect = pygame.Rect(0,0,0,0)
self.image = pygame.image.load('player.png')
self.rect.size = self.image.get_size()
self.rect.center = (x, y)
self.speed_x = 0
self.speed_y = 15
self.direction = None
def draw(self):
self.screen.blit(self.image,(self.rect.x,self.rect.y))
def move(self):
if self.direction:
if self.direction == UP :
self.rect.y -= self.speed_y
if self.rect.y < 0 :
self.rect.y = 0
elif self.direction == DOWN :
self.rect.y += self.speed_y
if self.rect.y > self.screen.get_size()[1] - self.rect.height :
self.rect.y = self.screen.get_size()[1] - self.rect.height
#----------------------------------------------------------------------
class Ball():
def __init__(self, screen, x, y):
self.screen = screen
self.rect = pygame.Rect(0,0,0,0)
self.image = pygame.image.load('ball.png')
self.rect.size = self.image.get_size()
self.rect.center = (x, y)
self.speed_x = 15
self.speed_y = 15
def draw(self):
self.screen.blit(self.image,(self.rect.x,self.rect.y))
def move(self):
self.rect.x += self.speed_x
self.rect.y += self.speed_y
if self.rect.left < 0 or self.rect.right > self.screen.get_size()[0]:
self.speed_x = -self.speed_x
if self.rect.top < 0 or self.rect.bottom > self.screen.get_size()[1]:
self.speed_y = -self.speed_y
#----------------------------------------------------------------------
class Game():
def __init__(self):
self.FPS = 25
pygame.init()
self.fpsClock = pygame.time.Clock()
self.background = pygame.image.load('background.jpg')
self.size = self.width, self.height = self.background.get_size()
self.screen = pygame.display.set_mode(self.size,0,32)
self.ball = Ball(self.screen, 100, 100)
self.player1 = Player(self.screen, 35, self.height/2)
self.player2 = Player(self.screen, self.width-35, self.height/2)
print self.screen.get_rect().center
font = pygame.font.SysFont("", 72)
self.text_paused = font.render("PAUSE", True, (255, 0, 0))
print self.text_paused.get_rect()
screen_rect = self.screen.get_rect()
self.text_rect = self.text_paused.get_rect()
self.text_rect.center = screen_rect.center
print self.text_rect
def run(self):
RUNNING = True
PAUSED = False
while RUNNING:
# --- events ---
for event in pygame.event.get():
if event.type==QUIT:
RUNNING = False
if event.type == KEYDOWN:
if event.key == K_ESCAPE:
RUNNING = False
elif event.key == K_SPACE:
PAUSED = not PAUSED
elif not PAUSED:
if event.key == K_w:
self.player1.direction = UP
elif event.key == K_s:
self.player1.direction = DOWN
elif event.key == K_UP:
self.player2.direction = UP
elif event.key == K_DOWN:
self.player2.direction = DOWN
if event.type == KEYUP:
if not PAUSED:
if event.key in (K_w, K_s):
self.player1.direction = None
elif event.key in (K_UP, K_DOWN):
self.player2.direction = None
# --- recalculations ---
if not PAUSED:
self.player1.move()
self.player2.move()
self.ball.move()
#~ print self.ball.get_rect()
if pygame.sprite.collide_rect(self.ball, self.player1):
self.ball.speed_x = -self.ball.speed_x
if pygame.sprite.collide_rect(self.ball, self.player2):
self.ball.speed_x = -self.ball.speed_x
# --- drawing ---
self.screen.blit(self.background,(0,0))
self.player1.draw()
self.player2.draw()
self.ball.draw()
if PAUSED:
self.screen.blit(self.text_paused, self.text_rect.topleft)
pygame.display.update()
# --- FPS ---
self.fpsClock.tick(self.FPS)
# --- finish ---
pygame.quit()
sys.exit()
#----------------------------------------------------------------------
Game().run()
Screenshot
Images used in game:
ball.png
player.png
background.jpg
来源：https://stackoverflow.com/questions/19823805/pygame-collision-interaction