Question

总结问题：（对于js来说是新手-我试图在这里找到答案，但是不确定我是否不了解键盘行为或代码是否很奇怪。）我正在尝试在屏幕上移动对象。该对象仅在按下另一个键后才移动，而不是对按下键或按下键做出反应（我都尝试过）。这对于对象移动来说很好，但是一旦按下空格键，我也尝试锁定响应，这同样行不通。

这是在Macbook Pro上使用Chrome版本81.0.4044.92

描述您尝试过的方法：我尝试同时使用keyup和keydown。

在适当的时候显示一些代码：

var angle;
var myx;
var myy;
var LocCol;
var LocCol2;
var _resp_test_allKeys;
var TestComponents;
// FRR ----- manual entry BEGIN; copy this before "function TestRoutineBegin(trials) {" 
// code to move stimulus
var xforce; 

xforce = 0; // initially set speed ('force') to 0. It increases in steps of 1 as long as key is down

function  resetXforce(event){
    xforce = 0 // if finger has been lifted, go back to speed 0
}
function  getKeyResponse(event){ // check for responses
        var thisResp = psychoJS.eventManager.getKeys();
        console.log(thisResp)
        if ("left" == thisResp[0]) {
                xforce--;  // decrease angle with increasing acceleration the longer key pressed
                angle = (angle + xforce); //plus not minus here since xforce may become negative
                myx = (0.25 * Math.sin((((Math.PI * 2) * angle) / 360)));
                myy = (0.25 * Math.cos((((Math.PI * 2) * angle) / 360)));
                //smallcircle2.setPos([myx, myy]);
                image_on_circ_test.setPos([myx, myy]);

                }
        if ("right" == thisResp[0]) {
                xforce++; //increase angle with increasing acceleration the longer key pressed
                angle = (angle + xforce);
                myx = (0.25 * Math.sin((((Math.PI * 2) * angle) / 360)));
                myy = (0.25 * Math.cos((((Math.PI * 2) * angle) / 360)));
                //smallcircle2.setPos([myx, myy]);
                image_on_circ_test.setPos([myx, myy]);
            }
    // for some reason this only responds on second keypress? 
    /* if ("space" == thisResp[0]) {
            LocCol2 = 'white'  // if response locked with spacebar
        } */

    if (psychoJS.eventManager.getKeys({keyList:['space']}).length > 0) {
        LocCol2 = 'white'  // if response locked with spacebar
        }

        //psychoJS.eventManager.clearEvents({eventType:'keyboard'});
    }
document.addEventListener("keydown", getKeyResponse); //tried keydown as well, with the same problem
document.addEventListener("keyup", resetXforce);
// FRR ----- manual entry END -----

第一次按键被忽略

0 个答案: