124 lines
3.3 KiB
C++
124 lines
3.3 KiB
C++
/***************************************************************************
|
|
alienBlaster
|
|
Copyright (C) 2004
|
|
Paul Grathwohl, Arne Hormann, Daniel Kuehn, Soenke Schwardt
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2, or (at your option)
|
|
any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
***************************************************************************/
|
|
#include "boundingBox.h"
|
|
/*
|
|
void setX(Uint16 newX) {box.x = newX;}
|
|
void setY(Uint16 newY) {box.y = newY;}
|
|
void setWidth(Uint16 newWidth) {box.w = newWidth;}
|
|
void setHeight(Uint16 newHeight) {box.h = newHeight;}
|
|
*/
|
|
|
|
BoundingBox::BoundingBox(int x, int y, int width, int height) {
|
|
box.x = x;
|
|
box.y = y;
|
|
box.w = width;
|
|
box.h = height;
|
|
}
|
|
|
|
int BoundingBox::getUpperBound() {
|
|
return box.y;
|
|
}
|
|
|
|
int BoundingBox::getLowerBound() {
|
|
return box.y + box.h;
|
|
}
|
|
|
|
int BoundingBox::getLeftBound() {
|
|
return box.x;
|
|
}
|
|
|
|
int BoundingBox::getRightBound() {
|
|
return box.x + box.w;
|
|
}
|
|
|
|
bool BoundingBox::overlaps(BoundingBox *other) {
|
|
return ( !(getUpperBound() > other->getLowerBound()) &&
|
|
!(getLowerBound() < other-> getUpperBound()) &&
|
|
!(getLeftBound() > other->getRightBound()) &&
|
|
!(getRightBound() < other->getLeftBound()) );
|
|
}
|
|
|
|
bool BoundingBox::overlaps(const Vector2D &startOfLine, const Vector2D &endOfLine) {
|
|
|
|
// FIXME: optimize me!
|
|
RectangleGeo rect( Vector2D( box.x, box.y ),
|
|
Vector2D( box.x + box.w, box.y + box.h ) );
|
|
// FIXME: optimize me!
|
|
|
|
bool overlaps = false;
|
|
|
|
overlaps = rect.isInside( endOfLine );
|
|
if ( overlaps ) return true;
|
|
overlaps = rect.isInside( startOfLine );
|
|
if ( overlaps ) return true;
|
|
|
|
// check some points between the two end points
|
|
Vector2D delta((endOfLine.getX() - startOfLine.getX()) / 4.0,
|
|
(endOfLine.getY() - startOfLine.getY()) / 4.0);
|
|
Vector2D actPoint = startOfLine + delta;
|
|
int i = 1;
|
|
while (!overlaps && i <= 3 ) {
|
|
overlaps = rect.isInside(actPoint);
|
|
actPoint += delta;
|
|
i++;
|
|
}
|
|
return overlaps;
|
|
}
|
|
|
|
bool BoundingBox::overlaps(const Circle &circle) {
|
|
RectangleGeo rect( Vector2D( box.x, box.y ),
|
|
Vector2D( box.x + box.w, box.y + box.h ) );
|
|
return (rect.isInside(circle.getCenter()) ||
|
|
circle.isInside(rect.getPosLeftTop()) ||
|
|
circle.isInside(rect.getPosRightBottom()) ||
|
|
circle.isInside(Vector2D( box.x, box.y + box.h )) ||
|
|
circle.isInside(Vector2D( box.x + box.w, box.y )));
|
|
}
|
|
|
|
void BoundingBox::modifyX(int value) {
|
|
box.x += value;
|
|
}
|
|
|
|
void BoundingBox::modifyY(int value) {
|
|
box.y += value;
|
|
}
|
|
|
|
void BoundingBox::moveUpperBound(int upperBound) {
|
|
box.y = upperBound;
|
|
}
|
|
|
|
void BoundingBox::moveLowerBound(int lowerBound) {
|
|
box.y = lowerBound - box.h;
|
|
}
|
|
|
|
void BoundingBox::moveLeftBound(int leftBound) {
|
|
box.x = leftBound;
|
|
}
|
|
|
|
void BoundingBox::moveRightBound(int rightBound) {
|
|
box.x = rightBound - box.w;
|
|
}
|
|
|
|
/*
|
|
SDL_Rect *BoundingBox::getRect() {
|
|
return &box;
|
|
}
|
|
*/
|