Question

我正在制作一个侧卷轴街机游戏，您可以控制火箭，并且必须避免从右侧到左侧的小行波。我遇到的问题是波浪只出现一次。我做另一波的循环不起作用。非常感谢帮助。我在下面添加了我的代码：

     <public class AddNewDish extends Activity {

    EditText name, quantity, calorie, fat, protein, sugar, vitamins;
    Context context = this;
    FoodDbHelper foodDbHelper;
    SQLiteDatabase sqLiteDatabase;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        requestWindowFeature(Window.FEATURE_NO_TITLE);
        setContentView(R.layout.activity_add_new_dish);


        name = (EditText) findViewById(R.id.dish_name);
        quantity = (EditText) findViewById(R.id.dish_quantity);

        calorie = (EditText) findViewById(R.id.dish_calorie);
        fat = (EditText) findViewById(R.id.dish_fat);
        protein = (EditText) findViewById(R.id.dish_protein);
        sugar = (EditText) findViewById(R.id.dish_sugar);
        vitamins = (EditText) findViewById(R.id.dish_vitamins);
    }

    public void addDish(View view) {

        String dish_name = name.getText().toString();
        String dish_quantity = quantity.getText().toString();
        Integer dish_calorie = Integer.valueOf(calorie.getText().toString());
        String dish_fat = fat.getText().toString();
        String dish_protein = protein.getText().toString();
        String dish_sugar = sugar.getText().toString();
        String dish_vitamins = vitamins.getText().toString();


        foodDbHelper = new FoodDbHelper(context);
        sqLiteDatabase = foodDbHelper.getWritableDatabase();
        foodDbHelper.addInformations(dish_name, dish_quantity, dish_calorie, dish_fat, 
                dish_protein, dish_sugar, dish_vitamins, sqLiteDatabase);
        Toast.makeText(getBaseContext(), "Data Saved", Toast.LENGTH_LONG).show();
        foodDbHelper.close();
        Intent intent = new Intent(this, AddNewDish.class);
        startActivity(intent);


    }




    public void AllDish(View view) {
        Intent intent = new Intent(this, DataListActivity.class);
        startActivity(intent);
    }


    public void goback(View view)
    {
        Intent intent = new Intent(this,MainMenu.class);
        startActivity(intent);
    }
}>

Answer 1

我设法使用以下代码解决了这个问题：

import pygame as pg
from random import *
import time

pg.init()
scr = pg.display.set_mode((1000,800))
img2 = pg.image.load("asteroid.gif")
img = pg.transform.scale(img2, (75,75))
imgrect = img.get_rect()

#list with asteroid postitions and speeds

xast = []
yast = []
vx = []
vy = []

t = 0.001*pg.time.get_ticks()
tast = t
t0 = t
dtast = 0.5

running = True
while running:
    t = t = 0.001*pg.time.get_ticks()
    dt = t - t0
    if dt >0.:
        t0 = t
        for i in range(len(xast)):
            xast[i] = xast[i] + vx[i] * dt
            yast[i] = yast[i] + vy[i] * dt
    #Create new asteroids every dtast seconds
    if t - tast >= dtast:
        xast.append(999.)
        yast.append(float(randint(0,799)))
        vx.append(-50)
        vy.append(float(randint(-1,1)))
        tast = t

    #Draw frame
    scr.fill((0,0,0))
    for i in range(len(xast)):

        imgrect.center = (xast[i],yast[i])
        scr.blit(img,imgrect)

    pg.display.flip()
pg.quit()

Pygame侧卷轴如何以一定的间隔重复一个事件？

1 个答案: