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Making AI able to 'see' the player

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Andrew Kesterson
2014-06-14 14:54:33 -07:00
parent 102366e3ac
commit e927396fd7
1 changed files with 65 additions and 64 deletions
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129
moonlight/js/moonlight-skulk.js
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@@ -599,76 +599,77 @@ var AISprite = function(game, x, y, key, frame) {
yd = -(yd);
var hyp = Math.sqrt(Number(xd * xd) + Number(yd * yd));
if ( hyp < this.view_distance ) {
// View cone intersection test
var p1 = new Phaser.Point(this.x + (this.body.width / 2),
if ( hyp > this.view_distance ) {
return false;
}
// View cone intersection test
var p1 = new Phaser.Point(this.x + (this.body.width / 2),
this.y);
var viewline = new Phaser.Line(this.x + (this.body.width / 2),
var viewline = new Phaser.Line(this.x + (this.body.width / 2),
this.y,
this.x + (this.body.width / 2),
this.y - this.view_distance );
var p2 = new Phaser.Point(viewline.end.x, viewline.end.y);
p2.rotate(p1.x, p1.y, -45, true);
var p3 = new Phaser.Point(viewline.end.x, viewline.end.y);
var p4 = new Phaser.Point(viewline.end.x, viewline.end.y);
p4.rotate(p1.x, p1.y, 45, true);
/*
* ... In case this isn't obvious, this is the sprite's view cone:
*
* p3
* p2 p4
* \ /
* \ /
* \/
* p1
*/
if ( hasState(this, STATE_FACE_LEFT) ) {
rotatePoints([p1, p2, p3, p4],
this.x + (this.body.width / 2),
this.y + (this.body.height / 2),
-90);
} else if ( hasState(this, STATE_FACE_RIGHT) ) {
rotatePoints([p1, p2, p3, p4],
this.x + (this.body.width / 2),
this.y + (this.body.height / 2),
90);
} else if ( hasState(this, STATE_FACE_DOWN) ) {
rotatePoints([p1, p2, p3, p4],
this.x + (this.body.width / 2),
this.y + (this.body.height / 2),
180);
}
var viewcone = new Phaser.Polygon(p1, p2, p3, p1);
// FIXME : There has got to be a better way to do this
var rectLines = [
new Phaser.Line(spr.body.left, spr.body.top,
spr.body.right, spr.body.top),
new Phaser.Line(spr.body.right, spr.body.top,
spr.body.right, spr.body.bottom),
new Phaser.Line(spr.body.right, spr.body.bottom,
spr.body.left, spr.body.bottom),
new Phaser.Line(spr.body.left, spr.body.bottom,
spr.body.left, spr.body.top)
];
var withinView = false;
rectLines.forEach(function(sl) {
[[p1, p2], [p2, p3], [p3, p4], [p4, p1]].forEach(function(vl) {
tl = new Phaser.Line(vl[0].x, vl[0].y,
vl[1].x, vl[1].y);
if ( tl.intersects(sl) )
return true;
}, this);
if ( viewcone.contains(sl.start.x, sl.start.y) )
var p2 = new Phaser.Point(viewline.end.x, viewline.end.y);
p2.rotate(p1.x, p1.y, -45, true);
var p3 = new Phaser.Point(viewline.end.x, viewline.end.y);
var p4 = new Phaser.Point(viewline.end.x, viewline.end.y);
p4.rotate(p1.x, p1.y, 45, true);
/*
* ... In case this isn't obvious, this is the sprite's view cone:
*
* p3
* p2 p4
* \ /
* \ /
* \/
* p1
*/
if ( hasState(this, STATE_FACE_LEFT) ) {
rotatePoints([p1, p2, p3, p4],
this.x + (this.body.width / 2),
this.y + (this.body.height / 2),
-90);
} else if ( hasState(this, STATE_FACE_RIGHT) ) {
rotatePoints([p1, p2, p3, p4],
this.x + (this.body.width / 2),
this.y + (this.body.height / 2),
90);
} else if ( hasState(this, STATE_FACE_DOWN) ) {
rotatePoints([p1, p2, p3, p4],
this.x + (this.body.width / 2),
this.y + (this.body.height / 2),
180);
}
var viewcone = new Phaser.Polygon(p1, p2, p3, p1);
// FIXME : There has got to be a better way to do this
var rectLines = [
new Phaser.Line(spr.body.left, spr.body.top,
spr.body.right, spr.body.top),
new Phaser.Line(spr.body.right, spr.body.top,
spr.body.right, spr.body.bottom),
new Phaser.Line(spr.body.right, spr.body.bottom,
spr.body.left, spr.body.bottom),
new Phaser.Line(spr.body.left, spr.body.bottom,
spr.body.left, spr.body.top)
];
var withinView = false;
rectLines.forEach(function(sl) {
[[p1, p2], [p2, p3], [p3, p4], [p4, p1]].forEach(function(vl) {
tl = new Phaser.Line(vl[0].x, vl[0].y,
vl[1].x, vl[1].y);
if ( tl.intersects(sl) )
return true;
}, this);
return false;
}
if ( viewcone.contains(sl.start.x, sl.start.y) )
return true;
}, this);
return false;
}
this.enableWordBubble = function() {