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Collider.js
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Collider.js
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class Collider extends LevelObject {
constructor(image, x, y, width, height, mode, diagonal) {
super(image, x, y, width, height, mode, diagonal);
}
collide(pl) {
if (pl == null) {
pl = player
}
if (validParameter(this.diagonal)) {
if (this.isInteractingDiagonal(pl)) {
this.collideDiagonal(pl);
// this.adjustPlayer(pl);
}
return;
}
if (this.isInteracting(pl)) {
this.collideRect(pl);
// this.adjustPlayer(pl);
}
}
collideRect(pl) {
let thisLeft = this.left();
let thisRight = this.right();
let plLeft = pl.left();
let plRight = pl.right();
let moveX = abs(this.moveX) + pl.maxHorizontalSpeed;
let factor = 1.05;
if (plRight == constrain(plRight, thisLeft - factor*abs(moveX), thisLeft + factor*abs(moveX))) {
pl.x = thisLeft - pl.halfWidth();
} else if (plLeft == constrain(plLeft, thisRight - factor*abs(moveX), thisRight + factor*abs(moveX))) {
pl.x = thisRight + pl.halfWidth();
}
let thisTop = this.top();
let thisBottom = this.bottom();
let plTop = pl.top();
let plBottom = pl.bottom();
let moveY = abs( this.x - this.previousX ) + abs( pl.y - pl.previousY );
if (plBottom == constrain(plBottom, thisTop - factor*abs(moveY), thisTop + factor*abs(moveY))) {
pl.y = thisTop - pl.halfHeight();
} else if (plTop == constrain(plTop, thisBottom - factor*abs(moveY), thisBottom + factor*abs(moveY))) {
pl.y = thisBottom + pl.halfHeight();
}
}
collideDiagonal(pl) {
let plTop = pl.top();
let plBottom = pl.bottom();
let plLeft = pl.left();
let plRight = pl.right();
let plMoveX = pl.maxHorizontalSpeed;
let plMoveY = pl.maxSinkSpeed;
let factor = 1.2;
switch (this.diagonal) {
case BOTTOM_LEFT :
if (plTop > this.top() - factor*abs(plMoveY) && plTop < this.bottom() + factor*abs(plMoveY) && plRight == constrain(plRight, this.diagonalXFor(plTop - factor*abs(plMoveY)) - factor*abs(plMoveX), this.diagonalXFor(plTop + factor*abs(plMoveY)) + factor*abs(plMoveX))) {
let newPlRight = ( plRight + this.diagonalXFor(plTop) ) / 2;
let newPlTop = this.diagonalYFor(newPlRight);
pl.x = newPlRight - pl.halfWidth();
pl.y = newPlTop + pl.halfHeight();
} else {
if (plLeft == constrain(plLeft, this.right() - factor*abs(plMoveX), this.right() + factor*abs(plMoveX))) {
pl.x = this.right() + pl.halfWidth();
} else if (plRight == constrain(plRight, this.left() - factor*abs(plMoveX), this.left() + factor*abs(plMoveX))) {
pl.x = this.left() - pl.halfWidth();
}
if (plBottom == constrain(plBottom, this.top() - factor*abs(plMoveY), this.top() + factor*abs(plMoveY))) {
pl.y = this.top() - pl.halfHeight();
} else if (plTop == constrain(plTop, this.bottom() - factor*abs(plMoveY), this.bottom() + factor*abs(plMoveY))) {
pl.y = this.bottom() + pl.halfHeight();
}
}
break;
case TOP_LEFT :
if (plBottom > this.top() - factor*abs(plMoveY) && plBottom < this.bottom() + factor*abs(plMoveY) && plRight == constrain(plRight, this.diagonalXFor(plBottom + factor*abs(plMoveY)) - factor*abs(plMoveX), this.diagonalXFor(plBottom - factor*abs(plMoveY)) + factor*abs(plMoveX))) {
let newPlRight = ( plRight + this.diagonalXFor(plBottom) ) / 2;
let newPlBottom = this.diagonalYFor(newPlRight);
pl.x = newPlRight - pl.halfWidth();
pl.y = newPlBottom - pl.halfHeight();
} else {
if (plLeft == constrain(plLeft, this.right() - factor*abs(plMoveX), this.right() + factor*abs(plMoveX))) {
pl.x = this.right() + pl.halfWidth();
} else if (plRight == constrain(plRight, this.left() - factor*abs(plMoveX), this.left() + factor*abs(plMoveX))) {
pl.x = this.left() - pl.halfWidth();
}
if (plBottom == constrain(plBottom, this.top() - factor*abs(plMoveY), this.top() + factor*abs(plMoveY))) {
pl.y = this.top() - pl.halfHeight();
} else if (plTop == constrain(plTop, this.bottom() - factor*abs(plMoveY), this.bottom() + factor*abs(plMoveY))) {
pl.y = this.bottom() + pl.halfHeight();
}
}
break;
case TOP_RIGHT :
if (plBottom > this.top() - factor*abs(plMoveY) && plBottom < this.bottom() + factor*abs(plMoveY) && plLeft == constrain(plLeft, this.diagonalXFor(plBottom - factor*abs(plMoveY)) - factor*abs(plMoveX), this.diagonalXFor(plBottom + factor*abs(plMoveY)) + factor*abs(plMoveX))) {
let newPlLeft = ( plLeft + this.diagonalXFor(plBottom) ) / 2;
let newPlBottom = this.diagonalYFor(newPlLeft);
pl.x = newPlLeft + pl.halfWidth();
pl.y = newPlBottom - pl.halfHeight();
} else {
if (plLeft == constrain(plLeft, this.right() - factor*abs(plMoveX), this.right() + factor*abs(plMoveX))) {
pl.x = this.right() + pl.halfWidth();
} else if (plRight == constrain(plRight, this.left() - factor*abs(plMoveX), this.left() + factor*abs(plMoveX))) {
pl.x = this.left() - pl.halfWidth();
}
if (plBottom == constrain(plBottom, this.top() - factor*abs(plMoveY), this.top() + factor*abs(plMoveY))) {
pl.y = this.top() - pl.halfHeight();
} else if (plTop == constrain(plTop, this.bottom() - factor*abs(plMoveY), this.bottom() + factor*abs(plMoveY))) {
pl.y = this.bottom() + pl.halfHeight();
}
}
break;
case BOTTOM_RIGHT :
if (plTop > this.top() - factor*abs(plMoveY) && plTop < this.bottom() + factor*abs(plMoveY) && plLeft == constrain(plLeft, this.diagonalXFor(plTop + factor*abs(plMoveY)) - factor*abs(plMoveX), this.diagonalXFor(plTop - factor*abs(plMoveY)) + factor*abs(plMoveX))) {
let newPlLeft = ( plLeft + this.diagonalXFor(plTop) ) / 2;
let newPlTop = this.diagonalYFor(newPlLeft);
pl.x = newPlLeft + pl.halfWidth();
pl.y = newPlTop + pl.halfHeight();
} else {
if (plLeft == constrain(plLeft, this.right() - factor*abs(plMoveX), this.right() + factor*abs(plMoveX))) {
pl.x = this.right() + pl.halfWidth();
} else if (plRight == constrain(plRight, this.left() - factor*abs(plMoveX), this.left() + factor*abs(plMoveX))) {
pl.x = this.left() - pl.halfWidth();
}
if (plBottom == constrain(plBottom, this.top() - factor*abs(plMoveY), this.top() + factor*abs(plMoveY))) {
pl.y = this.top() - pl.halfHeight();
} else if (plTop == constrain(plTop, this.bottom() - factor*abs(plMoveY), this.bottom() + factor*abs(plMoveY))) {
pl.y = this.bottom() + pl.halfHeight();
}
}
break;
}
}
adjustPlayer(pl) {
let factor = pl.maxHorizontalSpeed;
if (pl.right() == constrain(pl.right(), this.left() - factor, this.left() + factor)) {
pl.x -= factor;
} else if (pl.left() == constrain(pl.left(), this.right() - factor, this.right() + factor)) {
pl.x += factor;
}
if (pl.top() == constrain(pl.top(), this.bottom() - factor, this.bottom() + factor)) {
pl.y += factor;
} else if (pl.bottom() == constrain(pl.bottom(), this.top() - factor, this.top() + factor)) {
pl.y -= factor;
}
}
}