3D 控制台游戏距离检测无法正常工作

Question

我正在尝试在 python 控制台中制作 3D 游戏。没有任何错误，但是当我运行它时，它没有显示任何东西（这很好），因为它没有在玩家视图中检测到任何块（#）（不好）。

问题可能出在第 78 行附近，它总是 True（在射线的第一次距离检查中），我不知道为什么（这是我的问题）。我当然会添加玩家移动和更复杂的地图。目前玩家只是以硬编码的速度向右旋转。

import os
import time
import math
import threading


hardMap = [   #exists so I can edit it
    ["#","#","#","#","#","#","#","#","#","#","#","#","#","#","#","#"],
    ["#",".",".",".",".",".",".",".",".",".",".",".",".",".",".","#"],
    ["#",".",".",".",".",".",".",".",".",".",".",".",".",".",".","#"],
    ["#",".",".",".",".",".",".",".",".",".",".",".",".",".",".","#"],
    ["#",".",".",".",".",".",".",".",".",".",".",".",".",".",".","#"],
    ["#",".",".",".",".",".",".",".",".",".",".",".",".",".",".","#"],
    ["#",".",".",".",".",".",".",".",".",".",".",".",".",".",".","#"],
    ["#",".",".",".",".",".",".",".",".",".",".",".",".",".",".","#"],
    ["#",".",".",".",".",".",".",".",".",".",".",".",".",".",".","#"],
    ["#",".",".",".",".",".",".",".",".",".",".",".",".",".",".","#"],
    ["#",".",".",".",".",".",".",".",".",".",".",".",".",".",".","#"],
    ["#",".",".",".",".",".",".",".",".",".",".",".",".",".",".","#"],
    ["#",".",".",".",".",".",".",".",".",".",".",".",".",".",".","#"],
    ["#",".",".",".",".",".",".",".",".",".",".",".",".",".",".","#"],
    ["#",".",".",".",".",".",".",".",".",".",".",".",".",".","#","#"],
    ["#","#","#","#","#","#","#","#","#","#","#","#","#","#","#","#"]

    ]


gameMap = "".join(["".join(hardMap[n]) for n in range(len(hardMap))])

notDone = True

playerX = 2
playerY = 2
playerA = 0 #player angle --> +1 turn right; -1 turn left

fov = 4
fov = math.pi / fov

depth = 20

fps = 30

screenWidth = 120
screenHeight = 40
os.system(f'mode con: cols={screenWidth} lines={screenHeight}')

screen = [" " for n in range(screenHeight * screenWidth)]
mapWidth = len(gameMap[0])
mapHeight = len(gameMap)



def printScreen(string):
    os.system('cls')
    time.sleep(0.01)  # reduce flickering
    for x in [string[i:i+screenWidth] for i in range(0,len(string),screenWidth)]:
        print("".join(x))
    

while(notDone):
    
    playerA = playerA + 0.01
    startTime = time.time()
    for x in range(screenWidth):
        rayAngle = (playerA - fov / 2) + ((x / screenWidth) * fov)
        distanceToWall = 0
        hitWall = False

        eyeX = math.sin(rayAngle)
        eyeY = math.cos(rayAngle)

        while not hitWall and distanceToWall < depth:
            distanceToWall += 0.1
            
            testX = int(playerX + eyeX * distanceToWall)
            testY = int(playerY + eyeY * distanceToWall)


            distanceBeforTheIf = distanceToWall


            if testX < 0 or testX >= mapWidth or testY < 0 or testY>= mapHeight: #---------------THE PROBLEM------------
                hitWall = True
                distanceToWall = depth
                with open("log.txt","a") as f:
                        f.write(f"angle: {playerA}\ndistanceToWall:{distanceToWall}\ndistanceBeforTheIf :{distanceBeforTheIf}")
                        
            elif gameMap[testY * mapWidth + testX] == "#":    
                    hitWall = True
                
                
        ceiling = int((screenHeight / 2.0) - (screenHeight / distanceToWall))
        floor = screenHeight - ceiling  

        for y in range(screenHeight):

    
            if distanceToWall <= depth / 4: shade = u"\u2591"
            elif distanceToWall < depth / 3: shade = u"\u2592"
            elif distanceToWall < depth / 2: shade = u"\u2593"
            elif distanceToWall < depth / 1: shade = u"\u2588"
            else: shade = " "

            
            if y < ceiling:
                screen[y * ceiling + x] = " "
            elif y > ceiling and y <= floor:
                screen[y * screenWidth + x] = shade
            else:
                screen[y * screenWidth + x] = " "
    printScreen(screen)           
    time.sleep(max(1./fps - (time.time() - startTime), 0))

Answer 1

现在可以了。 hardMap 以前称为 gameMap 但我更改了它，因为想要一维数组但仍然可以轻松更改地图的选项。我只是改变了： mapWidth = len(gameMap[0]) mapHeight = len(gameMap) 到 mapWidth = len(hardMap[0]) mapHeight = len(hardMap)

感谢随机戴维斯！

3D 控制台游戏距离检测无法正常工作

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