cube-game-plus-plus/common/utils/CollisionBox.cpp

#include "common/utils/CollisionBox.h"

CollisionBox::CollisionBox(const Vector3& min, const Vector3& max)
    : min(min), max(max) {
}

CollisionBox::CollisionBox(const Vector3& size) : max(size) {
}

CollisionBox CollisionBox::offset(const Vector3& offset) const {
    return CollisionBox(offset + min, offset + max);
}

bool CollisionBox::collidesWith(const CollisionBox& other) const {
    return max[0] > other.min[0] && min[0] < other.max[0] &&
           max[1] > other.min[1] && min[1] < other.max[1] &&
           max[2] > other.min[2] && min[2] < other.max[2];
}

CollisionBox CollisionBox::expand(const Vector3& offset) const {
    Vector3 add(offset[0] * (offset[0] >= 0.0), offset[1] * (offset[1] >= 0.0),
                offset[2] * (offset[2] >= 0.0));
    Vector3 sub(offset[0] * (offset[0] <= 0.0), offset[1] * (offset[1] <= 0.0),
                offset[2] * (offset[2] <= 0.0));
    return CollisionBox(min + sub, max + add);
}

const Vector3& CollisionBox::getMin() const {
    return min;
}

const Vector3& CollisionBox::getMax() const {
    return max;
}