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I have successfully gotten two images to move I want to write generic code for the collision of any two pictures (opponents) for a game.
In this collision function I would like for two objects (their id’s) to be passed in . the function collects the boundaries, essentially and when there is a violation, there is an alert thrown.
/* css Define starting positions
#collision(obj1,obj2){{position:absolute; top:300px; left:900px }
#peter {position:absolute; top:50px; left:75px}
var topPeter = 25 // holds the value of the position *** same as CSS positions
var leftPeter= 25
var stewietop = 300
var stewieleft = 900
function collision(obj1,obj2){
var o1t = obj1.top
var o1b = o1t + obj1.height
var o1l = obj1.left
var o1r = o1l + obj1.width
var o2t = obj2.top
var o2b = o2t + obj2.height
var o2l = obj2.left
var o2r = o2l + obj2.width
var test = false
/***** I have tested the following concept extensively and it works well. I am transferring it from a specific case involving the same two objects all the time to two random objects ********/
if( (((o1l >= o2l)&&(o1l <= o2r))||
((o2l >= o1l)&&(o2l <= o1r)))&&
(((o1t >= o2t)&&(o1t <= o2b))||
((o2t >= o1t)&&(o2t <= o1b)))
)
{test=true}
return test
}
// calling the function
if collision(peter,stewie) {alert(‘collision’)}
/* should throw an alert if the two touch each other.