sprite | 易学教程

Updating multiple items in a class, not just one

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问题 In the update section of this code, only the first bat that gets made is affected by update() in class Bat()... Outside of main loop: START_BAT_COUNT = 30 BAT_IMAGE_PATH = os.path.join( 'Sprites', 'Bat_enemy', 'Bat-1.png' ) bat_image = pygame.image.load(BAT_IMAGE_PATH).convert_alpha() bat_image = pygame.transform.scale(bat_image, (80, 70)) class Bat(pygame.sprite.Sprite): def __init__(self, bat_x, bat_y, bat_image, bat_health): pygame.sprite.Sprite.__init__(self) self.bat_health = bat_health

NES(6502 assembly) Sprites movement

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问题 I am currently working on a NES(6502) assembly game but I dont understand how to make a sprite move.Heres how I think its supposed to works: (loop) LDA $200 ;will load into the A register the content of address $200,wich contain the Y postion of my sprite INA ;Increment the A register wich would increment the content of A wich is the Y position of my sprite..? However it seems that you cannot increment the A register accumulator because I get an error when trying to assemble with the INA

iOS Sprite Kit教程之滚动场景

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iOS Sprite Kit教程之滚动场景滚动场景在很多的游戏中，场景都不是静止的，而是滚动的，如在植物大战僵尸的游戏中，它的场景如图 2.26 所示。图 2.26 植物大战僵尸在图 2.26 中，用黑色框框住的部分是在屏幕上显示的，即玩家是可以看到的。右边的这些内容玩家就看不到了，为了让玩家可以熟悉场景中的内容，此游戏在开始时，首先对屏幕中的场景进行滚动。本节将为开发者实现场景滚动的功能。 Sprite Kit中让场景进行滚动以下是如何让一个场景进行滚动的具体实现方法。 1. 创建项目以及添加图像从上文的内容中可以看到场景的背景颜色具有单一性，即场景的背景颜色是红色，场景就为红色。一般所说的滚动场景其实就是滚动背景，所以在滚动场景时，场景的滚动效果是看不出来的。为了可以看到滚动效果，背景需要使用图像实现。首先我们需要添加图像 background1.png 和 background2.png 到创建的项目中。添加图像的具体步骤如下：（ 1 ）创建一个 Game 类型的项目，命名为 2-2 。（ 2 ）右击 2-2 项目中的 Supporting Files 文件夹，弹出快捷菜单，如图 2.27 所示。图 2.27 添加图像 1 （ 3 ）选择 Add Files to "2-2"… 命令，弹出选择文件对话框，如图 2.28 所示。图 2.28 添加图像

How does Sprite Animation with WebGL work?

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问题 Although there are many tutorials about how to render sprites, which I already know, I was wondering about how I can animate my sprites in an object oriented way. Let's say I have a Player- class class Player{ constructor(){ this.textureAtlasPath = 'textures/player.jpg' this.uvCoords = [0,0,1,0,1,1,0,1] } } So if player.jpg contains only ONE texture (like one character) i think it is very clear, that i use uv coordinates [0,0,1,0,1,1,0,1] . But lets say the player.jpg contains of 4 textures

Unity increases size of imported sprites

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问题 I had imported a .png (800 x 294) Size 37.2 KB into unity but after importing it shows it size 0.9MB, which is too large than original. I changed the Max Size for 1024 to 512 in import settings which lowers it resolution from original to 512 x 188 with size of 94KB. How does .png size increased this much (from 37.2K to 0.9MB) without any image resolution changes ? 回答1: You are probably misleading the physical texture size of the png, which is 37.2 KB as you specified, with a texture size in

Unity increases size of imported sprites

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Unity increases size of imported sprites

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iOS Sprite Kit Collision with movement through elements

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问题 Is it possible to use Sprite kit's physicsBody to have element collision and still allow elements to go through each other? I'm interested in having the delegate to be called only when two borders hit each other and then allow them to go through each other afterwards :) 回答1: Yes this is possible. You can register for callbacks from collisions between objects but not have the collision affect the object itself. The Ray Wenderlich - Sprite Kit book explains how to do this in the Zombie Conga

LibGDX problems rotating sprite

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问题 OK so I'm really confused I've rotated sprites before and had no problem such as rotating a boat as it moves through an ocean, but for some reason I'm having a really big problem this time. So I create a texture in an assets file, but not static textures. I load the texture using the following: class Assets{ Texture img; public Assets(){ img = new Texture(Gdx.files.internal("images/PNG.png") And then I call the assets in the main class by calling: Assets assets = new Assets() And then I have

Using a sprite sheet with multiple sprites

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问题 Hey guys so I have a sprite sheet with multiple sprites that I want to use to animate a website using canvas. However the problem I am having is I don't know how to go about reading in only the frames that I need. Example: 1 1 1 2 2 2 2 2 3 3 4 4 4 4 4 4 Here I have 4 different sprites that I want to animate. How would I go about retrieving and animating the correct frames? P.S I'm using javascript. 回答1: Retrieving and Playing multiple sprites on a spritesheet Retrieving: Create an object