first commit

pythonProject1/source/states/level.py

@@ -3,43 +3,73 @@ import pygame
 from .. import  tools, setup
 from .. import constants as C
 from .. components import player
+import os
+import json
 
 class Level:
     def __init__(self):
         self.finished = False
         self.next = None
         self.info = info.Info('level')
+        self.load_map_data()
         self.setup_background()
+        self.setup_start_positions()
         self.setup_player()
 
+    def load_map_data(self):
+        file_name = 'level_1.json'
+        file_path = os.path.join('source/data/maps',file_name)
+        with open(file_path) as f:
+            self.map_data = json.load(f)
+
+
     def setup_background(self):
-        self.background = setup.GRAPHICS['level_1']
+        self.image_name = self.map_data['image_name']
+        self.background = setup.GRAPHICS[self.image_name]
         rect = self.background.get_rect()
         self.background = pygame.transform.scale(self.background,(int(rect.width * C.BG_MULTI),
                                                                        int(rect.height * C.BG_MULTI)))
         self.background_rect = self.background.get_rect()
+        self.game_window = setup.SCREEN.get_rect()
+        self.game_ground = pygame.Surface((self.background_rect.width,self.background_rect.height))
+
+
+    def setup_start_positions(self):
+        self.positions = []
+        for data in self.map_data['maps']:
+            self.positions.append((data['start_x'],data['end_x'],data['player_x'],data['player_y']))
+        self.start_x,self.end_x,self.player_x,self.player_y = self.positions[0]
+
 
     def setup_player(self):
         self.player = player.Player('mario')
-        self.player.rect.x = 300
-        self.player.rect.y = 490
+        self.player.rect.x = self.game_window.x + self.player_x
+        self.player.rect.bottom = self.player_y
 
 
     def update(self, surface, keys):
         self.player.update(keys)
         self.update_player_position()
+        self.update_game_window()
         self.draw(surface)
 
 
     def update_player_position(self):
         self.player.rect.x += self.player.x_vel
-        if self.player.rect.x < 0:
-            self.player.rect.x = 0
-        if self.player.rect.x > C.SCREEN_W -16*C.PLAYER_MULTI:
-            self.player.rect.x = C.SCREEN_W -16*C.PLAYER_MULTI
+        if self.player.rect.x < self.start_x:
+            self.player.rect.x = self.start_x
+        elif self.player.rect.right > self.end_x:
+            self.player.rect.right = self.end_x
         self.player.rect.y += self.player.y_vel
 
+    def update_game_window(self):
+        third = self.game_window.x + self.game_window.width/3
+        if self.player.x_vel > 0 and self.player.rect.centerx > third  and self.game_window.right < self.end_x:  # 判断移动
+            self.game_window.x += self.player.x_vel   # 用窗口更新代替主角移动
+            self.start_x = self.game_window.x
+
     def draw(self, surface):
-        surface.blit(self.background,(0,0))
-        surface.blit(self.player.image, self.player.rect)
+        self.game_ground.blit(self.background,self.game_window,self.game_window)
+        self.game_ground.blit(self.player.image,self.player.rect)     # 将背景与人物化境
+        surface.blit(self.game_ground,(0,0), self.game_window)   # 渲染
         self.info.draw(surface)