Javascript 瓷砖之间的平滑过渡
如图所示,当您使用箭头键移动红方块时,瓷砖之间的过渡非常起伏,看起来不太好 我想知道是否有一种方法,使瓷砖之间的平滑过渡,使它看起来像一个平滑的运动Javascript 瓷砖之间的平滑过渡,javascript,jquery,html,canvas,Javascript,Jquery,Html,Canvas,如图所示,当您使用箭头键移动红方块时,瓷砖之间的过渡非常起伏,看起来不太好 我想知道是否有一种方法,使瓷砖之间的平滑过渡,使它看起来像一个平滑的运动 var canvas, context, board, imageObj, tiles, board, display; var NUM_OF_TILES = 2; // viewport var vX = 0, vY = 0, vWidth = 15, vHeight = 10; var playerX = 0,
var canvas, context, board, imageObj, tiles, board, display;
var NUM_OF_TILES = 2;
// viewport
var vX = 0,
vY = 0,
vWidth = 15,
vHeight = 10;
var playerX = 0,
playerY = 0;
var worldWidth = 29,
worldHeight = 19;
function loadMap(map) {
if (map == 1) {
return [[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0], [0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0], [0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0], [0, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 0], [0, 1, 1, 2, 1, 1, 1, 1, 1, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 0], [0, 1, 1, 2, 1, 1, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 1, 1, 0], [0, 1, 1, 2, 2, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 0], [0, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 1, 1, 1, 2, 1, 1, 0], [0, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 2, 2, 1, 2, 1, 1, 1, 2, 1, 1, 0], [0, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 2, 1, 1, 2, 1, 1, 0], [0, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 2, 2, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 2, 1, 1, 2, 1, 1, 0], [0, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 2, 1, 1, 2, 1, 1, 0], [0, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 2, 1, 1, 2, 1, 1, 0], [0, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 2, 2, 1, 1, 2, 1, 1, 0], [0, 1, 1, 1, 1, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 2, 1, 1, 0], [0, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 2, 1, 1, 1, 0], [0, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 1, 1, 1, 1, 0], [0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0], [0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0], [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]];
}
}
$(document).ready(function() {
canvas = document.getElementById("canvas");
context = canvas.getContext("2d");
canvas.tabIndex = 0;
canvas.focus();
canvas.addEventListener('keydown', function(e) {
console.log(e);
var key = null;
switch (e.which) {
case 37:
// Left
if (playerX > 0) playerX--;
break;
case 38:
// Up
if (playerY > 0) playerY--;
break;
case 39:
// Right
if (playerX < worldWidth) playerX++;
break;
case 40:
// Down
if (playerY < worldHeight) playerY++;
break;
}
// Okay! The player is done moving, now we have to determine the "best" viewport.
// Ideally the viewport centers the player,
// but if its too close to an edge we'll have to deal with that edge
vX = playerX - Math.floor(0.5 * vWidth);
if (vX < 0) vX = 0;
if (vX+vWidth > worldWidth) vX = worldWidth - vWidth;
vY = playerY - Math.floor(0.5 * vHeight);
if (vY < 0) vY = 0;
if (vY+vHeight > worldHeight) vY = worldHeight - vHeight;
draw();
}, false);
var board = [];
canvas.width = 512;
canvas.height = 352;
board = loadMap(1);
imageObj = new Image();
tiles = [];
var loadedImagesCount = 0;
for (x = 0; x <= NUM_OF_TILES; x++) {
var imageObj = new Image(); // new instance for each image
imageObj.src = "http://mystikrpg.com/canvas/img/tiles/t" + x + ".png";
imageObj.onload = function() {
// console.log("Added tile ... "+loadedImagesCount);
loadedImagesCount++;
if (loadedImagesCount == NUM_OF_TILES) {
// Onces all tiles are loaded ...
// We paint the map
draw();
}
};
tiles.push(imageObj);
}
function draw() {
context.clearRect(0,0,canvas.width, canvas.height);
for (y = 0; y <= vHeight; y++) {
for (x = 0; x <= vWidth; x++) {
theX = x * 32;
theY = y * 32;
context.drawImage(tiles[board[y+vY][x+vX]], theX, theY, 32, 32);
}
}
context.fillStyle = 'red';
context.fillRect((playerX-vX)*32, (playerY-vY)*32, 32, 32);
}
});
var画布、上下文、板、imageObj、瓷砖、板、显示;
var NUM_OF_TILES=2;
//视区
var vX=0,
vY=0,
vWidth=15,
vHeight=10;
变量playerX=0,
playerY=0;
var worldWidth=29,
世界高度=19;
函数加载图(map){
if(map==1){
返回[[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],[0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1],[0, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 0], [0, 1, 1, 2, 1, 1, 1, 1, 1, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 0], [0, 1, 1, 2, 1, 1, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 1, 1, 0], [0, 1, 1, 2, 2, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 0], [0, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 1, 1, 1, 2, 1, 1, 0], [0, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 2, 2, 1, 2, 1, 1, 1, 2, 1, 1, 0], [0, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 2, 1, 1, 2, 1, 1, 0], [0, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 2, 2, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 2, 1, 1, 2, 1, 1, 0], [0, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 2, 1, 1, 2, 1, 1, 0], [0, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 2, 1, 1, 2, 1, 1, 0], [0, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 2, 2, 1, 1, 2, 1, 1, 0], [0, 1, 1, 1, 1, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 2, 1, 1, 0], [0, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 2, 1, 1, 1, 0], [0, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 1, 1, 1, 1, 0], [0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0], [0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0], [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]];
}
}
$(文档).ready(函数(){
canvas=document.getElementById(“canvas”);
context=canvas.getContext(“2d”);
canvas.tabIndex=0;
canvas.focus();
canvas.addEventListener('keydown',函数(e){
控制台日志(e);
var key=null;
开关(e.which){
案例37:
//左
如果(playerX>0)playerX--;
打破
案例38:
//向上
如果(playerY>0)playerY--;
打破
案例39:
//对
如果(playerXworldWidth)vX=worldWidth-vWidth;
vY=游戏性-数学地板(0.5*vHight);
如果(vY<0)vY=0;
如果(vY+vHeight>worldHeight)vY=世界高度-vHeight;
draw();
},假);
var board=[];
canvas.width=512;
canvas.height=352;
线路板=负荷图(1);
imageObj=新图像();
瓷砖=[];
var LoadedImageScont=0;
对于(x=0;x我玩了一会儿,得到了一些有用的东西:
case 39:
// Right
if (playerX < worldWidth) {
var start = playerX;
var end = Math.round(playerX + 1);
$({ i : start }).animate({ i: end}, {
duration: 400,
step: function(now) {
playerX = now;
draw();
}
});
}
break;
当然,你必须做额外的工作,例如,开始点和停止点可能会以这种方式变化。正如建议的那样,你可能应该使用像素位置作为你的字符而不是平铺。但我不知道你的意图
通过检查磁贴是否处于“满”位置,可以避免在按下键时卡住
if (playerY < worldHeight && playerY % 1 == 0) {...
if(playerY
回答您的问题:是的。您需要以像素而不是平铺来处理角色的位置。谢谢,但是如果我移动正方形太快,为什么会出现空白屏幕?如果您按住键会发生什么?这是一个问题,如果您按住键,则会一直触发按键事件和动画我无法跟踪这一快速变化
if (playerY < worldHeight && playerY % 1 == 0) {...