<html>
<body>
<div id="debug"> </div>
<SPAN id=spn1 style="position:absolute;left=0;top=0;OVERFLOW: hidden; WIDTH: 32px; HEIGHT: 48px">
<IMG src="char_10_student_woman.png">
</SPAN>
<script>
//document.onmousemove=new Function("window.status=event.x+','+event.y;");
var target_posx,target_posy,theTimeout,theTimeout2;
document.onmousemove = view_pos;
function view_pos(){
window.status = event.x +","+event.y;
}
document.onclick = set_pos;
function set_pos(){
target_posx = parseInt(event.x - 16);
target_posy = parseInt(event.y - 48);
clearTimeout(theTimeout);
move();
}
function move(){
var bc = 4;
var a_bc = 0;
var b_bc = 0;
var a = 0;
var b = 0;
var c = 0;
now_posx = parseInt((spn1.style.left).substr(0,(spn1.style.left).length-2));
now_posy = parseInt((spn1.style.top).substr(0,(spn1.style.top).length-2));
a = Math.abs(target_posx-now_posx);
b = Math.abs(target_posy-now_posy);
c = Math.ceil(Math.sqrt(a*a+b*b))
// document.write("a is"+a+"<br>b is"+b+"<br>c is "+c);
a_bc = (a/c)*bc;
b_bc = (b/c)*bc;
//document.write(a_bc+"<br>"+b_bc);
//调定角色方向
var dir = set_dir(now_posx,now_posy,target_posx,target_posy);
spn1.scrollTop = (dir-1) * 48;
debug.innerHTML = "角色移动，两点走直线<br>x边长:"+a+"<br>y边长"+b+"<br>斜边长:"+c+"<br>X步长 is"+a_bc+"<br>Y步长 is"+b_bc+"<br>方向:"+dir+"<br>now_posx:"+now_posx+"<br>now_posy"+now_posy+"<br>target_posx"+target_posx+"<br>target_posy"+target_posy;
if(now_posx != target_posx){
if(now_posx > target_posx){
now_posx -= a_bc;
if(now_posx <= target_posx)
now_posx = target_posx;
spn1.style.left = now_posx;
}else{
now_posx += a_bc;
if(now_posx >= target_posx)
now_posx = target_posx;
spn1.style.left = now_posx;
}
}
if(now_posy != target_posy){
if(now_posy > target_posy){
now_posy -= b_bc;
if(now_posy <= target_posy)
now_posy = target_posy;
spn1.style.top = now_posy;
}else{
now_posy += b_bc;
if(now_posy >= target_posy)
now_posy = target_posy;
spn1.style.top = now_posy;
}
}
if(isNaN(a_bc) && isNaN(b_bc)){
clearTimeout(theTimeout2);
theTimeout2 = 0;
spn1.scrollLeft = 0;
return;
}else{
if(theTimeout2 == 0){
theTimeout2 = setTimeout("show_a();",100);
}
}
theTimeout = setTimeout("move();",100);
}
//调定角色方向
function set_dir(now_posx,now_posy,target_posx,target_posy){
if(target_posx > now_posx){
if(target_posy > now_posy){
dir = 2;
}
if(target_posy == now_posy){
dir = 1;
}
if(target_posy < now_posy){
dir = 8;
}
}
if(target_posx < now_posx){
if(target_posy > now_posy){
dir = 4;
}
if(target_posy == now_posy){
dir = 5;
}
if(target_posy < now_posy){
dir = 6;
}
}
if(target_posx == now_posx){
if(target_posy > now_posy){
dir = 3;
}
if(target_posy < now_posy){
dir = 7;
}
}
return dir;
}
i = 0;
function show_a(){
if(i<160){
spn1.scrollLeft = i;
}else{
spn1.scrollLeft=1;
}
}
</script>
</body>
</html>
