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IsChunkCellWithinViewport extraChunkRadius parameter for supporting overdraw.

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josh
2025-01-18 00:55:58 -05:00
parent 3fac7e61ce
commit f6152d9df7
2 changed files with 10 additions and 6 deletions
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5
Client/include/Client/LocalWorld.hpp
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@@ -45,7 +45,10 @@ namespace CaveGame::Client
JGL::RenderTarget* canvas_render_target;
bool IsChunkCellWithinViewport(const Vector2& coords) const;
/// Determines whether a given chunk coordinate lies within the viewable space, with an optional 'oversize' parameter.
/// @param extraChunkRadius Specifies how many extra chunks can be considered within the viewport when they are in fact, just outside of the viewport.
/// @note This is used to overdraw
bool IsChunkCellWithinViewport(const Vector2& coords, int extraChunkRadius = 0) const;
void RenderChunk(const Vector2& coords);

11
Client/src/Client/LocalWorld.cpp
View File

@@ -204,10 +204,11 @@ namespace CaveGame::Client {
return cached_chunk_sprites.size();
}
bool LocalWorld::IsChunkCellWithinViewport(const Vector2 &coords) const {
bool LocalWorld::IsChunkCellWithinViewport(const Vector2 &coords, int extraChunkRadius) const {
int extraChunkComputedPixelsRequired = extraChunkRadius*Core::Chunk::ChunkSize;
AABB2D chunk_bounding_box = AABB2D(coords*Core::Chunk::ChunkSize, coords*Core::Chunk::ChunkSize+Vector2(Core::Chunk::ChunkSize));
return Core::Solver::AABB2Dvs(
camera.ScaledViewport(), chunk_bounding_box);
camera.ScaledViewportOversized(extraChunkComputedPixelsRequired), chunk_bounding_box);
}
RNG rng;
@@ -284,7 +285,7 @@ namespace CaveGame::Client {
for (auto it = loaded_chunks.begin(); it != loaded_chunks.end();)
{
const auto coords = it->first;
if (!IsChunkCellWithinViewport(coords)) {
if (!IsChunkCellWithinViewport(coords, 2)) {
// TODO: Move off main thread.
SaveChunkToFile(coords, it->second);
@@ -304,8 +305,8 @@ namespace CaveGame::Client {
// TODO If you want to load chunks the player cannot see, Update the "LookForChunksNeedUnloading" function to use the same bounds.
// The chunks just outside the visible area would be written to the disk and reloaded every time the loop went around - Redacted.
Vector2 viewport_topleft = camera.ScaledViewport().minPoint;
Vector2 viewport_bottomright = camera.ScaledViewport().maxPoint;
Vector2 viewport_topleft = camera.ScaledViewportOversized(2*Core::Chunk::ChunkSize).minPoint;
Vector2 viewport_bottomright = camera.ScaledViewportOversized(2*Core::Chunk::ChunkSize).maxPoint;
int lower_bound_h = Math::Floor(viewport_topleft.x / Core::Chunk::ChunkSize)/*-2*/;
int upper_bound_h = Math::Floor(viewport_bottomright.x / Core::Chunk::ChunkSize)/*+2*/;