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它顯示createjs文件中的一些錯誤。在CreateJS中顯示未捕獲的類型錯誤。沒有顯示任何輸出..我的代碼如下
<html>
<head>
<title></title>
<script src="https://code.createjs.com/createjs-2014.12.12.min.js">
</script> <script>
var preload,cW,cH,winW,winH;
var road,city1,city2,sky,build1,build2;
window.onload = function(){
var canvas = document.getElementById("demoCanvas");
var stage = new createjs.Stage(canvas);
cW=1200;
cH=600;
preload = new createjs.LoadQueue(true);
var manifest =[{id:"ad_road",src:"road.png"},
{id:"ad_build1",src:"build.png"},
{id:"ad_build2",src:"build.png"},
{id:"ad_farbuild1",src:"layer3.png"},
{id:"ad_land",src:"land1.png"},
{id:"ad_farbuild2",src:"layer1.jpg"},
{id:"ad_sky",src:"sky.png"}
];
preload.loadManifest(manifest);
preload.on("complete",handleComplete);
function handleComplete(){
sky = new createjs.Shape();
sky.graphics.beginBitmapFill(preload.getResult("ad_sky"),"repeat-x").drawRect(0, 0, 1200,600);
var roadImg = preload.getResult("road");
road = new createjs.Shape();
road.graphics.beginBitmapFill(roadImg).drawRect(0, 0, cW + roadImg.width, roadImg.height*1);
road.tileW = roadImg.width;
road.y = cH - roadImg.height;
/*var matrix = new createjs.Matrix2D(1,2,3,4,5,6);*/
build1 = new createjs.Bitmap(preload.getResult("ad_build1"));
build1.setTransform(Math.random()*cW ,cH - build1.image.height * 0.7 - roadImg.height, 0.7,0.7);
build1.alpha = 1;
build2 = new createjs.Bitmap(preload.getResult("ad_build2"));
//console.log(cH - build2.image.height * 1 - roadImg.height);
build2.setTransform(Math.random()*cW ,cH - build2.image.height * 0.7 - roadImg.height, 0.7,0.7);
build2.alpha = 1;
stage.addChild(sky,build1,build2,road);
createjs.Ticker.timingMode = createjs.Ticker.RAF;
document.onkeydown = tick;
}
//createjs.Ticker.addEventListener("tick", tick);
function tick(event){
if(event.keyCode === 37){
var deltaS = event.delta/1000 || 40/1000;
road.x = (road.x - deltaS * 200) % road.tileW;
build1.x = (build1.x - deltaS * 60);
if (build1.x + build1.image.width * build1.scaleX <= 0) {
build1.x = cW;
}
build2.x = (build2.x - deltaS * 75);
if (build2.x + build2.image.width * build2.scaleX <= 0) {
build2.x = cW;
}
stage.update(event);
}
}
}
</script>
</head>
<body>
<p><canvas height="600" id="demoCanvas" width="1300"> </canvas></p>
</body>
</html>
它顯示了以下錯誤 控制檯日誌:遺漏的類型錯誤:未能執行的「CanvasRenderingContext2D」 createPattern':無功能發現提供相匹配的簽名。
有沒有可能您的某個圖片未加載?我使用單個加載的圖像將代碼轉儲到小提琴中,並且工作正常。 「build2」不顯示,可能是由於轉換。 http://jsfiddle.net/lannymcnie/fe6xkf81/ – Lanny
是的,它看起來像是當你傳遞給bitmapFill的圖像爲空時發生錯誤。 – Lanny