bool EntityManager::IsMoveLegal(Entity* input)
{
Sprite* entity = static_cast<Sprite*>(input);
BoundingBox<s16> entitybb;
entity->getBoundingBox(entitybb);
// Make player walk through everything
if( input->getType() != PLAYERENTITY)
{
for(LinkedList* node = mEntities; node != NULL; node = node->next)
{
Entity* entity_to_check = (Entity*) node->data;
// Ugly casting but it's needed...
if(entity_to_check->getType() != LIVINGENTITY || input == entity_to_check || entity_to_check->hidden)
continue;
Sprite* current = static_cast<Sprite*>(entity_to_check);
BoundingBox<s16> bb;
current->getBoundingBox(bb);
if(entitybb.Intersects(bb))
return false;
}
}
return true;
/* Check the map walk/nowalk flag */
//return (gpMapEngine->collisionAbsolute(entity->position.x() + 16, entity->position.y() + 16));
}
bool SolidComposite::BoxIntersects(const BoundingBox& b) const
{
if (!b.Intersects(m_bsphere))
{
return false;
}
const int size = m_children.size();
for (int i = 0; i < size; i++)
{
const SolidComponent* pc = m_children[i].GetPtr();
if (pc->BoxIntersects(b))
{
return true;
}
}
return false;
}
//Update collectables positions each frame
void Collectable::update(float dt){
//make bounding boxes
BoundingBox *playerbb = new BoundingBox(XMFLOAT3(player->player->getPosition()._41, player->player->getPosition()._42, player->player->getPosition()._43),
XMFLOAT3(2.0f, 2.0f, 0.0f));
//moves collectables across screen (right to left) and respawns them when they leave the screen
for (unsigned int i = 0; i < 1; i++){
collectables[i]->translate(XMFLOAT3(-8.0f * dt, 0.0f, 0.0f));
//._41 is the x value for the position matrix of game entities
if (collectables[i]->getPosition()._41 < -30)
collectables[i]->setPosition(XMFLOAT3(30.0f, (rand() % 40) - 19.0f, 0.0f));}
// Tests for collisions between the collectables and the player
for (int i = 0; i < 1; i++){
BoundingBox *collectablebb = new BoundingBox(XMFLOAT3(collectables[i]->getPosition()._41, collectables[i]->getPosition()._42, collectables[i]->getPosition()._43),
XMFLOAT3(2.0f, 2.0f, 0.0f));
//check for intersections
if (collectablebb->Intersects(*playerbb))
{
collectables[i]->setPosition(XMFLOAT3(30.0f, (rand() % 40) - 19.0f, 0.0f));
gameReference->pickUp();
//elimate spawning on each other
for (int g = 0; g < 1; g++)
{
BoundingBox *collectablebb2 = new BoundingBox(XMFLOAT3(collectables[g]->getPosition()._41, collectables[g]->getPosition()._42, collectables[g]->getPosition()._43),
XMFLOAT3(2.0f, 2.0f, 0.0f));
if (collectablebb2->Intersects(*collectablebb))
{
collectables[i]->setPosition(XMFLOAT3(30.0f, (rand() % 40) - 19.0f, 0.0f));
}
}
}
break;
}
}
bool Scene::Intersect(DirectX::FXMVECTOR start,
DirectX::FXMVECTOR end,
XMVECTOR& intersection) const
{
using namespace DirectX;
const auto recScale = XMVectorReciprocal(XMLoadFloat3(&m_Scale));
const auto origin = XMVectorMultiply(start, recScale);
const auto endPoint = XMVectorMultiply(end, recScale);
unsigned blocksCnt = m_PolygonSurface->GetBlocksForLevelCount(0);
auto direction = DirectX::XMVector3Normalize(end - start);
typedef std::pair<float, const Voxels::BlockPolygons*> HitBlock;
std::vector<HitBlock> hitBlocks;
for (auto blockId = 0u; blockId < blocksCnt; ++blockId)
{
BoundingBox aabb;
auto block = m_PolygonSurface->GetBlockForLevel(0, blockId);
const auto minCorner = block->GetMinimalCorner();
const auto maxCorner = block->GetMaximalCorner();
aabb.Extents = XMFLOAT3((maxCorner.x - minCorner.x) / 2.f,
(maxCorner.y - minCorner.y) / 2.f,
(maxCorner.z - minCorner.z) / 2.f);
aabb.Center = XMFLOAT3(minCorner.x + aabb.Extents.x,
minCorner.y + aabb.Extents.y,
minCorner.z + aabb.Extents.z);
float distance = 0;
if (aabb.Intersects(start, direction, distance))
{
hitBlocks.push_back(std::make_pair(distance, block));
}
}
std::sort(hitBlocks.begin(), hitBlocks.end(),
[](HitBlock& block1, HitBlock& block2) {
return std::abs(block1.first) < std::abs(block2.first);
});
float distance = 0;
float nearest = std::numeric_limits<float>::max();
bool found = false;
XMVECTOR V0, V1, V2;
for (auto block = hitBlocks.cbegin(); block != hitBlocks.cend(); ++block)
{
const auto blockRef = block->second;
unsigned indicesCnt = 0;
auto indices = blockRef->GetIndices(&indicesCnt);
for (auto triangle = 0u; triangle < indicesCnt; triangle += 3)
{
auto vertices = blockRef->GetVertices(nullptr);
V0 = XMLoadFloat3(reinterpret_cast<const DirectX::XMFLOAT3*>(&vertices[indices[triangle]].Position));
V1 = XMLoadFloat3(reinterpret_cast<const DirectX::XMFLOAT3*>(&vertices[indices[triangle + 1]].Position));
V2 = XMLoadFloat3(reinterpret_cast<const DirectX::XMFLOAT3*>(&vertices[indices[triangle + 2]].Position));
if (TriangleTests::Intersects(start, direction, V0, V1, V2, distance))
{
nearest = std::min(nearest, distance);
found = true;
}
}
if (found)
break;
}
intersection = start + nearest * direction;
return found;
}
std::unique_ptr<float> Ray::Intersects(const BoundingBox& bb)
{
return bb.Intersects(*this);
}
