mirror of
https://github.com/photonstorm/phaser
synced 2024-12-23 11:33:28 +00:00
472 lines
25 KiB
JavaScript
472 lines
25 KiB
JavaScript
var Phaser;
|
|
(function (Phaser) {
|
|
(function (Physics) {
|
|
/// <reference path="../../_definitions.ts" />
|
|
/**
|
|
* Phaser - Physics - Projection
|
|
*/
|
|
(function (Projection) {
|
|
var Circle67Deg = (function () {
|
|
function Circle67Deg() {
|
|
}
|
|
Circle67Deg.CollideS = function (x, y, oH, oV, obj, t) {
|
|
//if the object is in a cell pointed at by signx, no collision will ever occur
|
|
//otherwise,
|
|
//
|
|
//if we're colliding diagonally:
|
|
// -collide vs. the appropriate vertex
|
|
//if obj is in this tile: collide vs slope or vertex or axis
|
|
//if obj is vert neighb in direction of slope: collide vs. slope or vertex
|
|
//if obj is vert neighb against the slope:
|
|
// if(distance in y from circle to 90deg corner of tile < 1/2 tileheight, collide vs. face)
|
|
// else(collide vs. corner of slope) (vert collision with a non-grid-aligned vert)
|
|
//if obj is horiz neighb against direction of slope: collide vs. face
|
|
var signx = t.signx;
|
|
var signy = t.signy;
|
|
var sx;
|
|
var sy;
|
|
|
|
if (0 < (signx * oH)) {
|
|
//object will never collide vs tile, it can't reach that far
|
|
return Phaser.Physics.Circle.COL_NONE;
|
|
} else if (oH == 0) {
|
|
if (oV == 0) {
|
|
//colliding with current tile
|
|
//we could only be colliding vs the slope OR a vertex
|
|
//look at the vector form the closest vert to the circle to decide
|
|
sx = t.sx;
|
|
sy = t.sy;
|
|
|
|
var r = obj.radius;
|
|
var ox = obj.pos.x - t.pos.x;
|
|
var oy = obj.pos.y - (t.pos.y - (signy * t.yw));
|
|
|
|
//if the component of (ox,oy) parallel to the normal's righthand normal
|
|
//has the same sign as the slope of the slope (the sign of the slope's slope is signx*signy)
|
|
//then we project by the normal or axis, otherwise by the corner/vertex
|
|
//note that this is simply a VERY tricky/weird method of determining
|
|
//if the circle is in side the slope/face's voronoi region, or that of the vertex.
|
|
var perp = (ox * -sy) + (oy * sx);
|
|
|
|
if ((perp * signx * signy) < 0) {
|
|
//collide vs. vertex
|
|
var len = Math.sqrt(ox * ox + oy * oy);
|
|
var pen = r - len;
|
|
|
|
if (0 < pen) {
|
|
//note: if len=0, then perp=0 and we'll never reach here, so don't worry about div-by-0
|
|
ox /= len;
|
|
oy /= len;
|
|
|
|
obj.reportCollisionVsWorld(ox * pen, oy * pen, ox, oy, t);
|
|
return Phaser.Physics.Circle.COL_OTHER;
|
|
}
|
|
} else {
|
|
//collide vs. slope or vs axis
|
|
ox -= r * sx;
|
|
oy -= r * sy;
|
|
|
|
//if the dotprod of (ox,oy) and (sx,sy) is negative, the point on the circle is in the slope
|
|
//and we need toproject it out by the magnitude of the projection of (ox,oy) onto (sx,sy)
|
|
var dp = (ox * sx) + (oy * sy);
|
|
var lenP;
|
|
|
|
if (dp < 0) {
|
|
//collision; project delta onto slope and use this to displace the object
|
|
sx *= -dp;
|
|
sy *= -dp;
|
|
|
|
var lenN = Math.sqrt(sx * sx + sy * sy);
|
|
|
|
if (x < y) {
|
|
//penetration in x is smaller
|
|
lenP = x;
|
|
y = 0;
|
|
|
|
if ((obj.pos.x - t.pos.x) < 0) {
|
|
x *= -1;
|
|
}
|
|
} else {
|
|
//penetration in y is smaller
|
|
lenP = y;
|
|
x = 0;
|
|
|
|
if ((obj.pos.y - t.pos.y) < 0) {
|
|
y *= -1;
|
|
}
|
|
}
|
|
|
|
if (lenP < lenN) {
|
|
obj.reportCollisionVsWorld(x, y, x / lenP, y / lenP, t);
|
|
return Phaser.Physics.Circle.COL_AXIS;
|
|
} else {
|
|
obj.reportCollisionVsWorld(sx, sy, t.sx, t.sy, t);
|
|
return Phaser.Physics.Circle.COL_OTHER;
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
if ((signy * oV) < 0) {
|
|
//colliding with face/edge OR with corner of wedge, depending on our position vertically
|
|
//collide vs. vertex
|
|
//get diag vertex position
|
|
var vx = t.pos.x;
|
|
var vy = t.pos.y - (signy * t.yw);
|
|
|
|
var dx = obj.pos.x - vx;
|
|
var dy = obj.pos.y - vy;
|
|
|
|
if ((dx * signx) < 0) {
|
|
//colliding vs face
|
|
obj.reportCollisionVsWorld(0, y * oV, 0, oV, t);
|
|
|
|
return Phaser.Physics.Circle.COL_AXIS;
|
|
} else {
|
|
//colliding vs. vertex
|
|
var len = Math.sqrt(dx * dx + dy * dy);
|
|
var pen = obj.radius - len;
|
|
|
|
if (0 < pen) {
|
|
if (len == 0) {
|
|
//project out by 45deg
|
|
dx = oH / Math.SQRT2;
|
|
dy = oV / Math.SQRT2;
|
|
} else {
|
|
dx /= len;
|
|
dy /= len;
|
|
}
|
|
|
|
obj.reportCollisionVsWorld(dx * pen, dy * pen, dx, dy, t);
|
|
|
|
return Phaser.Physics.Circle.COL_OTHER;
|
|
}
|
|
}
|
|
} else {
|
|
//we could only be colliding vs the slope OR a vertex
|
|
//look at the vector form the closest vert to the circle to decide
|
|
sx = t.sx;
|
|
sy = t.sy;
|
|
|
|
var ox = obj.pos.x - (t.pos.x - (signx * t.xw));
|
|
var oy = obj.pos.y - (t.pos.y + (oV * t.yw));
|
|
|
|
//if the component of (ox,oy) parallel to the normal's righthand normal
|
|
//has the same sign as the slope of the slope (the sign of the slope's slope is signx*signy)
|
|
//then we project by the vertex, otherwise by the normal.
|
|
//note that this is simply a VERY tricky/weird method of determining
|
|
//if the circle is in side the slope/face's voronio region, or that of the vertex.
|
|
var perp = (ox * -sy) + (oy * sx);
|
|
|
|
if (0 < (perp * signx * signy)) {
|
|
//collide vs. vertex
|
|
var len = Math.sqrt(ox * ox + oy * oy);
|
|
var pen = obj.radius - len;
|
|
|
|
if (0 < pen) {
|
|
//note: if len=0, then perp=0 and we'll never reach here, so don't worry about div-by-0
|
|
ox /= len;
|
|
oy /= len;
|
|
|
|
obj.reportCollisionVsWorld(ox * pen, oy * pen, ox, oy, t);
|
|
|
|
return Phaser.Physics.Circle.COL_OTHER;
|
|
}
|
|
} else {
|
|
//collide vs. slope
|
|
//if the component of (ox,oy) parallel to the normal is less than the circle radius, we're
|
|
//penetrating the slope. note that this method of penetration calculation doesn't hold
|
|
//in general (i.e it won't work if the circle is in the slope), but works in this case
|
|
//because we know the circle is in a neighboring cell
|
|
var dp = (ox * sx) + (oy * sy);
|
|
var pen = obj.radius - Math.abs(dp);
|
|
|
|
if (0 < pen) {
|
|
//collision; circle out along normal by penetration amount
|
|
obj.reportCollisionVsWorld(sx * pen, sy * pen, t.sx, t.sy, t);
|
|
|
|
return Phaser.Physics.Circle.COL_OTHER;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
} else if (oV == 0) {
|
|
//colliding horizontally; we can assume that (signy*oV) < 0
|
|
//due to the first conditional far above
|
|
obj.reportCollisionVsWorld(x * oH, 0, oH, 0, t);
|
|
|
|
return Phaser.Physics.Circle.COL_AXIS;
|
|
} else {
|
|
//colliding diagonally; due to the first conditional above,
|
|
//obj is vertically offset against slope, and offset in either direction horizontally
|
|
//collide vs. vertex
|
|
//get diag vertex position
|
|
var vx = t.pos.x + (oH * t.xw);
|
|
var vy = t.pos.y + (oV * t.yw);
|
|
|
|
var dx = obj.pos.x - vx;
|
|
var dy = obj.pos.y - vy;
|
|
|
|
var len = Math.sqrt(dx * dx + dy * dy);
|
|
var pen = obj.radius - len;
|
|
|
|
if (0 < pen) {
|
|
if (len == 0) {
|
|
//project out by 45deg
|
|
dx = oH / Math.SQRT2;
|
|
dy = oV / Math.SQRT2;
|
|
} else {
|
|
dx /= len;
|
|
dy /= len;
|
|
}
|
|
|
|
obj.reportCollisionVsWorld(dx * pen, dy * pen, dx, dy, t);
|
|
|
|
return Phaser.Physics.Circle.COL_OTHER;
|
|
}
|
|
}
|
|
|
|
return Phaser.Physics.Circle.COL_NONE;
|
|
};
|
|
|
|
Circle67Deg.CollideB = function (x, y, oH, oV, obj, t) {
|
|
//if we're colliding diagonally:
|
|
// -if we're in the cell pointed at by the normal, collide vs slope, else
|
|
// collide vs. the appropriate corner/vertex
|
|
//
|
|
//if obj is in this tile: collide as with aabb
|
|
//
|
|
//if obj is horiz or vertical neighbor AGAINST the slope: collide with edge
|
|
//
|
|
//if obj is vert neighb in direction of slope: collide vs. slope or vertex or halfedge
|
|
//
|
|
//if obj is horiz neighb in direction of slope: collide vs. slope or vertex
|
|
var signx = t.signx;
|
|
var signy = t.signy;
|
|
var sx;
|
|
var sy;
|
|
|
|
if (oH == 0) {
|
|
if (oV == 0) {
|
|
//colliding with current cell
|
|
sx = t.sx;
|
|
sy = t.sy;
|
|
|
|
var r = obj.radius;
|
|
var ox = (obj.pos.x - (sx * r)) - (t.pos.x + (signx * t.xw));
|
|
var oy = (obj.pos.y - (sy * r)) - (t.pos.y - (signy * t.yw));
|
|
|
|
//if the dotprod of (ox,oy) and (sx,sy) is negative, the point on the circle is in the slope
|
|
//and we need toproject it out by the magnitude of the projection of (ox,oy) onto (sx,sy)
|
|
var dp = (ox * sx) + (oy * sy);
|
|
var lenP;
|
|
|
|
if (dp < 0) {
|
|
//collision; project delta onto slope and use this to displace the object
|
|
sx *= -dp;
|
|
sy *= -dp;
|
|
|
|
var lenN = Math.sqrt(sx * sx + sy * sy);
|
|
|
|
if (x < y) {
|
|
//penetration in x is smaller
|
|
lenP = x;
|
|
y = 0;
|
|
|
|
if ((obj.pos.x - t.pos.x) < 0) {
|
|
x *= -1;
|
|
}
|
|
} else {
|
|
//penetration in y is smaller
|
|
lenP = y;
|
|
x = 0;
|
|
|
|
if ((obj.pos.y - t.pos.y) < 0) {
|
|
y *= -1;
|
|
}
|
|
}
|
|
|
|
if (lenP < lenN) {
|
|
obj.reportCollisionVsWorld(x, y, x / lenP, y / lenP, t);
|
|
|
|
return Phaser.Physics.Circle.COL_AXIS;
|
|
} else {
|
|
obj.reportCollisionVsWorld(sx, sy, t.sx, t.sy, t);
|
|
|
|
return Phaser.Physics.Circle.COL_OTHER;
|
|
}
|
|
}
|
|
} else {
|
|
if ((signy * oV) < 0) {
|
|
//colliding with face/edge
|
|
obj.reportCollisionVsWorld(0, y * oV, 0, oV, t);
|
|
|
|
return Phaser.Physics.Circle.COL_AXIS;
|
|
} else {
|
|
//colliding with edge, slope, or vertex
|
|
var ox = obj.pos.x - t.pos.x;
|
|
var oy = obj.pos.y - (t.pos.y + (signy * t.yw));
|
|
|
|
if ((ox * signx) < 0) {
|
|
//we're colliding with the halfface
|
|
obj.reportCollisionVsWorld(0, y * oV, 0, oV, t);
|
|
|
|
return Phaser.Physics.Circle.COL_AXIS;
|
|
} else {
|
|
//colliding with the vertex or slope
|
|
sx = t.sx;
|
|
sy = t.sy;
|
|
|
|
//if the component of (ox,oy) parallel to the normal's righthand normal
|
|
//has the same sign as the slope of the slope (the sign of the slope's slope is signx*signy)
|
|
//then we project by the vertex, otherwise by the slope.
|
|
//note that this is simply a VERY tricky/weird method of determining
|
|
//if the circle is in side the slope/face's voronio region, or that of the vertex.
|
|
var perp = (ox * -sy) + (oy * sx);
|
|
|
|
if (0 < (perp * signx * signy)) {
|
|
//collide vs. vertex
|
|
var len = Math.sqrt(ox * ox + oy * oy);
|
|
var pen = obj.radius - len;
|
|
|
|
if (0 < pen) {
|
|
//note: if len=0, then perp=0 and we'll never reach here, so don't worry about div-by-0
|
|
ox /= len;
|
|
oy /= len;
|
|
|
|
obj.reportCollisionVsWorld(ox * pen, oy * pen, ox, oy, t);
|
|
|
|
return Phaser.Physics.Circle.COL_OTHER;
|
|
}
|
|
} else {
|
|
//collide vs. slope
|
|
//if the component of (ox,oy) parallel to the normal is less than the circle radius, we're
|
|
//penetrating the slope. note that this method of penetration calculation doesn't hold
|
|
//in general (i.e it won't work if the circle is in the slope), but works in this case
|
|
//because we know the circle is in a neighboring cell
|
|
var dp = (ox * sx) + (oy * sy);
|
|
var pen = obj.radius - Math.abs(dp);
|
|
|
|
if (0 < pen) {
|
|
//collision; circle out along normal by penetration amount
|
|
obj.reportCollisionVsWorld(sx * pen, sy * pen, sx, sy, t);
|
|
|
|
return Phaser.Physics.Circle.COL_OTHER;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
} else if (oV == 0) {
|
|
if ((signx * oH) < 0) {
|
|
//colliding with face/edge
|
|
obj.reportCollisionVsWorld(x * oH, 0, oH, 0, t);
|
|
|
|
return Phaser.Physics.Circle.COL_AXIS;
|
|
} else {
|
|
//we could only be colliding vs the slope OR a vertex
|
|
//look at the vector form the closest vert to the circle to decide
|
|
var slen = Math.sqrt(2 * 2 + 1 * 1);
|
|
var sx = (signx * 2) / slen;
|
|
var sy = (signy * 1) / slen;
|
|
|
|
var ox = obj.pos.x - (t.pos.x + (signx * t.xw));
|
|
var oy = obj.pos.y - (t.pos.y - (signy * t.yw));
|
|
|
|
//if the component of (ox,oy) parallel to the normal's righthand normal
|
|
//has the same sign as the slope of the slope (the sign of the slope's slope is signx*signy)
|
|
//then we project by the slope, otherwise by the vertex.
|
|
//note that this is simply a VERY tricky/weird method of determining
|
|
//if the circle is in side the slope/face's voronio region, or that of the vertex.
|
|
var perp = (ox * -sy) + (oy * sx);
|
|
|
|
if ((perp * signx * signy) < 0) {
|
|
//collide vs. vertex
|
|
var len = Math.sqrt(ox * ox + oy * oy);
|
|
var pen = obj.radius - len;
|
|
if (0 < pen) {
|
|
//note: if len=0, then perp=0 and we'll never reach here, so don't worry about div-by-0
|
|
ox /= len;
|
|
oy /= len;
|
|
|
|
obj.reportCollisionVsWorld(ox * pen, oy * pen, ox, oy, t);
|
|
|
|
return Phaser.Physics.Circle.COL_OTHER;
|
|
}
|
|
} else {
|
|
//collide vs. slope
|
|
//if the component of (ox,oy) parallel to the normal is less than the circle radius, we're
|
|
//penetrating the slope. note that this method of penetration calculation doesn't hold
|
|
//in general (i.e it won't work if the circle is in the slope), but works in this case
|
|
//because we know the circle is in a neighboring cell
|
|
var dp = (ox * sx) + (oy * sy);
|
|
var pen = obj.radius - Math.abs(dp);
|
|
if (0 < pen) {
|
|
//collision; circle out along normal by penetration amount
|
|
obj.reportCollisionVsWorld(sx * pen, sy * pen, t.sx, t.sy, t);
|
|
|
|
return Phaser.Physics.Circle.COL_OTHER;
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
if (0 < ((signx * oH) + (signy * oV))) {
|
|
//the dotprod of slope normal and cell offset is strictly positive,
|
|
//therefore obj is in the diagonal neighb pointed at by the normal.
|
|
//collide vs slope
|
|
sx = t.sx;
|
|
sy = t.sy;
|
|
|
|
var r = obj.radius;
|
|
var ox = (obj.pos.x - (sx * r)) - (t.pos.x + (signx * t.xw));
|
|
var oy = (obj.pos.y - (sy * r)) - (t.pos.y - (signy * t.yw));
|
|
|
|
//if the dotprod of (ox,oy) and (sx,sy) is negative, the point on the circle is in the slope
|
|
//and we need toproject it out by the magnitude of the projection of (ox,oy) onto (sx,sy)
|
|
var dp = (ox * sx) + (oy * sy);
|
|
|
|
if (dp < 0) {
|
|
//collision; project delta onto slope and use this to displace the object
|
|
//(sx,sy)*-dp is the projection vector
|
|
obj.reportCollisionVsWorld(-sx * dp, -sy * dp, t.sx, t.sy, t);
|
|
|
|
return Phaser.Physics.Circle.COL_OTHER;
|
|
}
|
|
return Phaser.Physics.Circle.COL_NONE;
|
|
} else {
|
|
//collide vs the appropriate vertex
|
|
var vx = t.pos.x + (oH * t.xw);
|
|
var vy = t.pos.y + (oV * t.yw);
|
|
|
|
var dx = obj.pos.x - vx;
|
|
var dy = obj.pos.y - vy;
|
|
|
|
var len = Math.sqrt(dx * dx + dy * dy);
|
|
var pen = obj.radius - len;
|
|
|
|
if (0 < pen) {
|
|
if (len == 0) {
|
|
//project out by 45deg
|
|
dx = oH / Math.SQRT2;
|
|
dy = oV / Math.SQRT2;
|
|
} else {
|
|
dx /= len;
|
|
dy /= len;
|
|
}
|
|
|
|
obj.reportCollisionVsWorld(dx * pen, dy * pen, dx, dy, t);
|
|
|
|
return Phaser.Physics.Circle.COL_OTHER;
|
|
}
|
|
}
|
|
}
|
|
|
|
return Phaser.Physics.Circle.COL_NONE;
|
|
};
|
|
return Circle67Deg;
|
|
})();
|
|
Projection.Circle67Deg = Circle67Deg;
|
|
})(Physics.Projection || (Physics.Projection = {}));
|
|
var Projection = Physics.Projection;
|
|
})(Phaser.Physics || (Phaser.Physics = {}));
|
|
var Physics = Phaser.Physics;
|
|
})(Phaser || (Phaser = {}));
|