breakout

问题 I'm working on a breakout clone and I've been trying to figure out how to get the intersection rect of two colliding rects so I can measure how deep the ball entered the block in both x and y axis and decide which component of the velocity I'll reverse. I figured I could calculate the depth for each case like this: But if I had the intersection rect than I woudn't have to worry if the ball hits the block from the left/right or top/bottom (since I would be only reversing the x and y axis

问题 can anyone help me with this? i am having trouble making a simple way to detect if a ball hits a paddle and then bounce it by changing the rect_change_y variable. here is code that works but the ball does not interact with paddle or die when it hits the bottom of the game. import pygame black = ( 0, 0, 0) white = ( 255, 255, 255) green = ( 0, 255, 0) red = ( 255, 0, 0) rect_x = 10 rect_y = 250 pad_x = 350 pad_y = 480 ball = 3 rect_change_x = 1 rect_change_y = 1 pad_x_c = 0 pygame.init() size=

问题 i want my rectangle to stop when the user press both left and right key. I researched about multiple key handlings but couldnt manage to find anything. package View; import java.awt.*; import java.awt.event.*; import javax.swing.*; public class GamePanel extends JPanel { private final int WIDTH = 600, HEIGHT = 500; // PROPERTIES private Timer timer; int x = 0; int y = 475; int velX = 0; // only left or right // CONSTRUCTOR public GamePanel() { setSize(WIDTH, HEIGHT); setBackground(new Color

问题 i want my rectangle to stop when the user press both left and right key. I researched about multiple key handlings but couldnt manage to find anything. package View; import java.awt.*; import java.awt.event.*; import javax.swing.*; public class GamePanel extends JPanel { private final int WIDTH = 600, HEIGHT = 500; // PROPERTIES private Timer timer; int x = 0; int y = 475; int velX = 0; // only left or right // CONSTRUCTOR public GamePanel() { setSize(WIDTH, HEIGHT); setBackground(new Color

问题 I have looked everywhere including the Unity documentation but cannot seem to find any good examples of how to use Unity's Vector2.Reflect() function. I am trying to use this to control the direction of the ball (in a 2D Breakout game) when it hits a wall. It takes 2 arguments (inDirection, inNormal) but I cannot seem to figure out how to use this. Any help would be appreciated. 回答1: Vector2 Reflect(Vector2 inDirection, Vector2 inNormal) : inDirection : black arrow inNormal : red arrow return

问题 I've been trying to get Breakout to work in Racket, so far the ball bounces from the paddle (paddle is controlled by mouse) and the bricks are present Here is the full on code: (require 2htdp/image) (require 2htdp/universe) (define WIDTH 400) (define HEIGHT 400) (define BALL-RADIUS 10) (define BALL-IMG (circle BALL-RADIUS "solid" "red")) (define REC-WIDTH 50) (define REC-HEIGHT 10) (define REC-IMG (rectangle REC-WIDTH REC-HEIGHT "solid" "grey")) (define BRICK-IMG0 (rectangle 60 30 "solid"

问题 With this script code (below) placed in between the head tags, I am told that this will not allow the page to load in an iframe. If this is correct, is there anything that needs to be replaced with my custom URL or similar in this code (e.g., top.location should be top.myurl )? Or do you leave it as it is, and just paste it in the head of the page? I'm trying to understand how this works. if (top.location!= self.location) { top.location = self.location.href } 回答1: This code will work if it is

问题 I'm making a Breakout clone and having a little trouble with the ball-to-paddle collisions. I have a rectangle represent both the ball and the paddle and when they intersect, the Y vector representing the ball's velocity is negated (as shown below). That all works fine. The problem is when the paddle is moving to the right I want it to nudge the ball a little to the right (as opposed to it just reflecting off normally) and I want the same to happen in the opposite direction is the paddle is

问题 Does anyone have any suggestions on how to deal with fast moving objects missing collisions in Unity. I am creating a breakout game for mobile and discovered that when the paddle is moved very fast then it misses the collision with the ball. I changed the collision to continuous detection but that throws up weird behaviour such as paddle being pushed down on collision. I also tried playing around with the dontgothrough script to make it work for 2D colliders without success. Anyone have any