void Renderer::RenderScene(const core::Scene& scene)
{
SetCurrentCamera(*scene.camera());
for (auto& entity : scene.entities()) {
RenderEntity(*entity);
}
}
////////////////////////////////////////
// PRIVATE UTILITY FUNCTIONS
////////////////////////////////////////
void RenderComponent::_ReceiveLocalMessage(CompMessage* message)
{
switch(message->GetType())
{
case ENTITY_RENDER:
{
RenderEntity();
}
break;
}
}
/*
* This could probably use some optimization. Every time we draw the map,
* we do n filter operations, then n sort operations. huuurk.
* Maybe keep the entity linked list y sorted at all times by reordering
* whenever a y value changes. That's only O(n) as opposed to O(nlogn) or
* whatever unholy growth rate this is.
*
* Update: meh. Sorting doesn't seem to be a bottleneck.
*/
void Engine::RenderEntities(uint layerIndex) {
CDEBUG("renderentities");
std::vector<Entity*> drawlist;
const Point res = video->GetResolution();
const Map::Layer* layer = map.GetLayer(layerIndex);
int xw = (xwin * layer->parallax.mulx / layer->parallax.divx) - layer->x;
int yw = (ywin * layer->parallax.muly / layer->parallax.divy) - layer->y;
// first, get a list of entities onscreen
uint width, height;
for (EntityList::iterator i = entities.begin(); i != entities.end(); i++) {
Entity* e = *i;
const Sprite* sprite = e->sprite;
if (e->layerIndex != layerIndex) continue; // wrong layer
if (!sprite) continue; // no sprite? @_x
width = sprite->Width();
height = sprite->Height();
// get the coodinates at which the sprite would be drawn
int x = e->x - sprite->nHotx + layer->x - xw;
int y = e->y - sprite->nHoty + layer->y - yw;
if (x + width > 0 && y + height > 0 &&
x < res.x && y < res.y &&
e->isVisible
) {
drawlist.push_back(e); // the entity is onscreen, tag it.
}
}
if (!drawlist.empty()) {
// Sort them by y value. (see the CompareEntity functor above)
std::sort(drawlist.begin(), drawlist.end(), CompareEntities());
video->SetBlendMode(Video::Normal);
for (std::vector<Entity*>::iterator j = drawlist.begin(); j != drawlist.end(); j++) {
#if 0
const Entity* e = *j;
const Sprite* s = e->sprite;
int x = e->x - xwin - s->nHotx + layer->x;
int y = e->y - ywin - s->nHoty + layer->y;
DrawEntity(e, x, y);
#else
RenderEntity(*j);
#endif
}
}
}
void SkyBoxShader::RenderTree(OctreeNode* renderTree, ID3D11Device* currDevice, ID3D11DeviceContext* deviceContext, ShaderData* drawData)
{
OctreeNode* currentNode = renderTree;
D3DXMATRIX wvpMatrix;
if(!mEffect)
{
std::cerr << "Render Error: SkyBox Shader Uninitialised!" << std::endl;
return;
}
setInputLayout(deviceContext);
while(currentNode != 0)
{
if(currentNode->mCurrentEntities)
{
for(int i = 0; i < currentNode->mCurrentEntities; i++)
{
if(currentNode->mNodeContents[i])
{
RenderEntity(currentNode->mNodeContents[i], currDevice, deviceContext, drawData);
}
}
}
for(int i = 0; i < 8; i++)
{
if(currentNode->mChildNodes[i])
{
RenderTree(currentNode->mChildNodes[i], currDevice, deviceContext, drawData);
}
else
{
currentNode = 0;
}
}
currentNode = 0;
}
}