JavaScript - Movement Of Img
Hi to all,
I am newbie in JS, and I hope that you can help with one javascript I am trying to use my function for move of image on menu the function JS function is Code: var start0l = document.getElementById('arrow1').offsetLeft, maxPoz0, timer0; function StartPosun(imgId, maxPoz) { clearTimeout(timer0); maxPoz0 = maxPoz; document.getElementById(imgId).style.left = start0l + 'px'; timer0 = setTimeout("posun0()", 1); } function ReturnPosun(imgId) { clearTimeout(timer0); timer0 = setTimeout("ret0()", 1); } function ret0() { if ((document.getElementById('arrow1').offsetLeft - start0l) > 0) { document.getElementById('arrow1').style.left = (parseInt(document.getElementById('arrow1').style.left) - 1) + 'px'; timer0 = setTimeout("ret0()", 3); } } function posun0() { if ((document.getElementById('arrow1').offsetLeft - start0l) <= maxPoz0) { document.getElementById('arrow1').style.left = (parseInt(document.getElementById('arrow1').style.left) + 1) + 'px'; timer0 = setTimeout("posun0()", 3); } } and the html is Code: <ul><li class="l1"> <a onmouseout="ReturnPosun('arrow1')" onmouseover="StartPosun('arrow1',15)" title="Aktuality" href="?cz_aktuality,22"> Aktuality <img style="position: absolute; left: 306px;" alt="Aktuality" src="templates/img/menu_arrow.png" id="arrow1"> </a><ul class="sub1"><li class="l1"> <a onmouseout="ReturnPosun('arrow1')" onmouseover="StartPosun('arrow1',15)" title="AKCE: Bike Music Fest 2011" href="?cz_akce-bike-music-fest-2011,34"> AKCE: Bike Music Fest 2011 <img style="position:absolute;" alt="AKCE: Bike Music Fest 2011" src="templates/img/menu_arrow.png" id="arrow1"> </a> </li><li class="l2"> <a onmouseout="ReturnPosun('arrow2')" onmouseover="StartPosun('arrow2',15)" title="AdventureMenu v prodejně TOURATECH CZ" href="?cz_adventuremenu-v-prodejne-touratech-cz,33"> AdventureMenu v prodejně TOURATECH CZ <img style="position: absolute; left: 306px;" alt="AdventureMenu v prodejně TOURATECH CZ" src="templates/img/menu_arrow.png" id="arrow2"> </a> </li><li class="lL"> <a onmouseout="ReturnPosun('arrowL')" onmouseover="StartPosun('arrowL',15)" title="TOURATECH TravelEvent 2011" href="?cz_touratech-travelevent-2011,32"> TOURATECH TravelEvent 2011 <img style="position: absolute; left: 306px;" alt="TOURATECH TravelEvent 2011" src="templates/img/menu_arrow.png" id="arrowL"> </a> </li></ul> </li><li class="l2"> <a onmouseout="ReturnPosun('arrow2')" onmouseover="StartPosun('arrow2',15)" title="O produktu" href="?cz_o-produktu,31"> O produktu <img style="position:absolute;" alt="O produktu" src="templates/img/menu_arrow.png" id="arrow2"> </a> </li><li id="selected" class="l3"> <a onmouseout="ReturnPosun('arrow3')" onmouseover="StartPosun('arrow3',15)" title="E-shop" href="?cz_e-shop,25"> E-shop <img style="position: absolute; left: 306px;" alt="E-shop" src="templates/img/menu_arrow.png" id="arrow3"> </a> </li><li class="l4"> <a onmouseout="ReturnPosun('arrow4')" onmouseover="StartPosun('arrow4',15)" title="Samoohřev" href="?cz_samoohrev,23"> Samoohřev <img style="position: absolute; left: 306px;" alt="Samoohřev" src="templates/img/menu_arrow.png" id="arrow4"> </a> </li><li class="l5"> <a onmouseout="ReturnPosun('arrow5')" onmouseover="StartPosun('arrow5',15)" title="Partneři" href="?cz_partneri,21"> Partneři <img style="position: absolute; left: 306px;" alt="Partneři" src="templates/img/menu_arrow.png" id="arrow5"> </a> </li><li class="lL"> <a onmouseout="ReturnPosun('arrowL')" onmouseover="StartPosun('arrowL',15)" title="Kontakty" href="?cz_kontakty,24"> Kontakty <img style="position:absolute;" alt="Kontakty" src="templates/img/menu_arrow.png" id="arrowL"> </a> </li></ul> and the problem is, that I can move with the first one, but I don't how I can move with the others like alone function I thought that I can use somethink like if (onmouseover == true) .... but I failed can someone hellp with this problem pls? Similar TutorialsAnyone know of a good tutorial for making an object move repeatedly while a key is held down (ie move right 1px every second while right arrow key is held?)
Hey guys, I just started to create my first Javascript game. It is a platformer and i just cant figure out how to do the movement. ATM my "character" is just a black rectangle. Here is my code. I have not been able to find the bug. var c = document.getElementById("mainCanvas"); var ctx = c.getContext("2d"); var level1 = new Image(); level1.src = "Textures/level1.png" level1.addEventListener("load", function() {ctx.drawImage(level1, 0,0,1024,1024) ctx.fillRect(playerX, playerY, 55, 118)}) //Charecter Position var playerX = 512 var playerY = 512 //Render function playerRender() {ctx.fillRect(playerX, playerY, 55, 118)} window.addEventListener("keydown", function(evt){ if (evt.keycode == 87) {playerY-=10} }) var RenderPlayerInterval = setInterval(playerRender() ,10) Reply With Quote 01-25-2015, 12:34 AM #2 Old Pedant View Profile View Forum Posts Supreme Master coder! Join Date Feb 2009 Posts 28,310 Thanks 82 Thanked 4,754 Times in 4,716 Posts Code: ctx.fillRect(playerX, playerY, 55, 118)}) //Charecter Position var playerX = 512 var playerY = 512 When you *CALL* that fillRect, neither playerX nor playerY has yet been defined! SO you are essentially doing Code: ctx.fillRect( null, null, 55, 118) And where are the semicolons on the end of EACH LINE. Yes, I know they aren't required. But put them in. It will save you from grief someday. How could you say make a x move around a grid using the arrow keys?
Hello everyone,im new to programming and have been learning a little bit of JavaScript.Im mostly learning it for a program called unity 3d,Its a game engine.And well,im stuck and can't figure this part out.i was wondering if anyone could help me. the script is to make the character move forward and shoot.but the character jumps instead of moving forward. any advice? Code: var speed = 3.0; var rotateSpeed = 3.0; var bullitPrefab:Transform; function Update () { var controller : CharacterController = GetComponent(CharacterController); // Rotate around y - axis transform.Rotate(0, Input.GetAxis ("Horizontal") * rotateSpeed, 0); // Move Forward / backward var forward = transform.TransformDirection(Vector3.forward); var curSpeed = speed * Input.GetAxis ("Vertical"); controller.SimpleMove(forward * curSpeed); if(Input.GetButtonDown("Jump")) { var bullit = Instantiate(bullitPrefab, GameObject.Find("spawnPoint").transform.position, Quaternion.identity); } } @script RequireComponent(CharacterController); Hi, I want the image in the header of my website to move from left to right and back in an endless loop. The image width is larger than the width of the div which contains the image, so when the image moves to the right, the right end of the image has to disappear. When the image moves back to the left, the left end has to disappear. Now I know I can use the overflow: hidden; element in the CSS file to hide a part of the image. I found already several javascript scripts to move an image over the screen, but these scripts move the image only in 1 direction. I need it to go in the 2 directions in loop. Also these scripts require a position: relative; element to the image, so the hidden overflow of the div doesn't work. An example of this kind of script: Code: <body onload="moveRight()"> <div id="header" style="width: 1010px;height: 170px;overflow: hidden;"> <img src="images/header.jpg" id="header" style="position:relative;top:0px;left:0px; "> </div> <script type="text/javascript"> var userWidth = window.screen.width; function moveRight() { var pp = document.getElementById("header"); var lft = parseInt(pp.style.left); var tim = setTimeout("moveRight()",100); // 100 controls the speed lft = lft+3; // move by 3 pixels pp.style.left = lft+"px"; if (lft > 50) { // left edge of image past the right edge of screen pp.style.left = 0; // back to the left } } </script> </body> Is there any way to improve this script to my requirements, or am I completely looking in the wrong direction? Heres what I did Created 4 variables 1 - to get which direction the person is pressing (leftright) 2 - if the person is pressing up 3 - to set a direction when a person is pressing any buttons 4 - for images I made every .05 seconds there should be a check on the conditions for buttons pressed and where the picture is. Aptana didn't find any errors and personally, I don't like using the program anyway because it makes me feel overwhelmed If someone could help me pick out the peice that is wrong, that would be nice should I use the preload as my image source, or keep it as imgs? Code: var yvel, i, imgs, updown, ground, reft, leftright, MAX_X, MAX_Y, MIN_X; MAX_X = 500 /* parseInt(game.style.width) + parseInt(game.style.left); */ MIN_X = 300 /* parseInt(game.style.left); */ MAX_Y = 900 /* parseInt(game.style.height) + parseInt(game.style.top); */ updown = 0; leftright = 0; ground = 0; reft = 1; yvel = 0; function init(){ var guy = document.getElementById("guy"); imgs=["stand.png", "standleft.png", "jump.png", "jumpleft.png", "walk.png", "walkleft.png", "finishjump.png", "finishleft.png"]; var preload = new Array(); for(i=0; i<imgs.length; i++) { preload[i]= new Image(); preload[i].src = imgs[i]; } i = 0; document.onkeydown=keyDown; document.onkeyup=keyUp; movesprite(); } function movesprite(hori, vert){ var game = document.getElementById("game"); x = parseInt(guy.style.left); y = parseInt(guy.style.top); if (ground = 0) { yvel += 3; if (hori == 1) { x += 1; right(1); reft = 1; } if (hori == -1) { x += -1; left(1); reft = 0; } if (hori == 0) { stand(1); } }else { if (hori == 1) { x += 3; right(0); reft = 1; } if (hori == -1) { x += -3; left(0); reft = 0; } if (hori == 0) { stand(0); } if (vert == 1) { yvel += -15; jump(); } } checkBounds(); guy.style.left = x + "px"; guy.style.top = y + "px"; setTimeout("movesprite(updown,leftright)", 50); } function checkBounds(){ if (x >= MAX_X) {x = MAX_X;} if (x <= MIN_X) {x = MIN_X} if (y + yvel >= MAX_Y) {y = MAX_Y; ground = 1;} else {ground = 0; y += yvel;} } function jump(){ if (reft == 1) {guy.src = imgs[2];} else {guy.src = imgs[3];} } function left(ground){ if (ground == 1) { if (guy.src == imgs[1]) {guy.src = imgs[5];} else {guy.src = imgs[1];} }else {guy.src = imgs[7];} } function right(ground){ if (ground == 1) { if (guy.src == imgs[0]) {guy.src = imgs[4];} else {guy.src = imgs[0];} }else {guy.src = imgs[6];} } function stand(ground){ if (ground == 1) { if (reft == 1) {guy.src = imgs[0];} else {guy.src = imgs[1];} }else { if (reft == 1) {guy.src = imgs[6];} else {guy.src = imgs[7];} } } function keyDown(e){ if (e.keyCode == 37) {leftright = -1;} /*left*/ if (e.keyCode == 38) {updown = 1;} /*up*/ if (e.keyCode == 39) {leftright = 1;} /*right*/ /* if(e.keyCode == 40) is down */ } function keyUp(e){ if (e.keyCode == 37) {leftright = 0;} if (e.keyCode == 38) {updown = 0;} if (e.keyCode == 39) {leftright = 0;} } onload=init; Hi, I'm a beginner in web programming so please, don't mind if this might look as a dum request. I need an image to move from outside the viewed space, from somwhere on the page where users cannot hav acces, let's say from x position of -439px to 0px, so that the image looks like entering the window. And I need to do this after the user clicks a piece of text that is already on the screen. How can I do that ? In what tag should I include the image ? where should I put de event handler/ listener ? I know I need to change the CSS atributes but how. I tried this and it didn't work in Firefox nor in IE. Code: THE HTML FILE <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <title>Greenbrain</title> <script language="javascript" type="text/javascript" src="greenbrain.js"></script> <link rel="stylesheet" type="text/css" href="greenbrain.css"> </head> <body> <div id=int; onClick="intr()"> <h1 class="intrare">INTRARE</h1> </div> <div id=img_intrare> <img src="soare.png"; class="soare"> </div> </body> </html> THE .CSS FILE body {background-image:url(fondhome.png); position:fixed;} img.soare {position:absolute; left:-459px; top:100px; z-index:1;} h1.intrare {z-index:2} THE .JS FILE function intr() { var x, xi; x=0; xi=document.getElementById('img_intrare').style.left; if(xi!=x) {document.getElementById('img_intrare').style.left = x + "px"} } ps: i've been trying for 4 days now to find out how to do this, the answer might be just under my nose but then, my nose would be to big and pidgeons would come and sit on it... Hello, I am trying to move each cell content from one table to another table. I do not want to lose the value of each cells in table1, but just to show how I got table2 from table1. I would like to show/animate the movement. So when the user clicks the button the data from table1 will scroll towards table2. I am new to HTML/javascript programming I really appreciate your help |