return dx*dx + dy*dy;
}
+Coord.prototype.dist2origin = function() {
+ // kinda hacky that this exists, I know
+ return this.x*this.x + this.y*this.y;
+}
+
Coord.prototype.rotate = function(th) {
// rotates about angle, returns new value
var new_x = this.x*Math.cos(th) - this.y*Math.sin(th);
var walls = endpoints.filter(e => (e.id == -1) || this.dead.some(d => (d.id==e.id)));
// check for collisions
for(var ball of this.balls) {
- // (check the fixt edges first, then the paddles I guess
var collided = false;
+ // first, see if the ball is moving towards the center (should solve most problems with things
+ var currd2 = ball.coord.dist2origin();
+ var nextd2 = new Coord(ball.coord.x + ball.dx, ball.coord.y + ball.dy).dist2origin();
+ if(nextd2 < currd2)
+ continue;
+
+ // below here probably requires changes
+ // (check the fixt edges first, then the paddles I guess
for(var i=0; (i<walls.length) && !collided; i++) {
var nearest = nearest_point_on_line(ball.coord, walls[i]);
var dist2 = ball.coord.dist2(nearest);
}
// do something to show the zones for my sanity
for(var lz of livingzones) {
- //drawLine(ctx, xcolor, lz.f, lz.s);
+ drawLine(ctx, xcolor, lz.f, lz.s);
}
// balls
for(var b of state.balls) {
<!doctype html>
+<meta charset='utf-8'>
<html>
<head>
<title>Pong Battle Royale</title>
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