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snake.js
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snake.js
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function Snake(){
this.x = 0;
this.y = 0;
this.xspeed = 1;
this.yspeed = 0;
this.total = 1;
this.tail = [];
this.eat = function(pos){
var d = dist(this.x, this.y, pos.x, pos.y)
if(d<1){
this.total++;
return true;
} else{
return false;
}
}
this.dir = function(x, y){
this.xspeed = x;
this.yspeed = y;
}
this.death = function(){
for(var i=0;i<this.tail.length;i++){
var pos = this.tail[i];
var d = dist(this.x, this.y, pos.x, pos.y);
if(d<1){
this.total = 0;
this.tail = [];
}
}
}
this.update = function(){
if (this.total === this.tail.length){
for(var i=0;i<this.tail.length-1;i++){
this.tail[i] = this.tail[i+1];
}
}
this.tail[this.total-1] = createVector(this.x, this.y);
this.x = this.x + this.xspeed*scl;
this.y = this.y + this.yspeed*scl;
this.x = constrain(this.x, 0, width-scl);
this.y = constrain(this.y, 0, height-scl);
}
this.show = function(){
fill(255);
for(var i=0;i<this.tail.length;i++){
rect(this.tail[i].x, this.tail[i].y, scl, scl);
}
rect(this.x, this.y, scl, scl);
}
}