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- Only render faces that are "visible" so - exposed to air essentially.
- We also check a neighbor chunk to test if there is a block, and
accordigly draw a face in the curr chunk
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- Switching to semi-chunk mesh rendering just 100x the framerate, it was
running at around 100fps for 3 CHUNK_DISTANCE, and pushing it above
would make it drop to 30. Now it runs at 9000 frames per second with
CHUNK_DISTANCE of 8, probably can push it even more
- What is bizarre is this is just from the reduction in draw calls,
I still need to implement face culling for invisible blocks (simple)
and frustrum culling (using AABB) or maybe octrees
- Block is way way more simplifed, it's just metadata about a coordinate
in the chunk block array
- All rendering and mesh generation code is handled by chunks. There is
a VAO, single VBO and EBO for each chunk. The data buffer is loaded
into the GPU with a chunk_load, and it stays like that until it is
loaded again. chunk_load is called if we move chunks, in
engine_update. Here we unload existing chunks, then load the new ones
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- Remove the code that sent colors through uniform variables, instead
send texture data
- Each vertex now has a texture coordinate
- struct texture is a easy way to represent textures, can be extended
later
- Shaders updated to use textures
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If we change a chunk, unload all chunks. This removes block GPU data
(vbo, ebo, vao). We anyways redraw so we don't lose anything
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- On world_init, LOAD_CHUNK amount of chunks are preloaded
- Chunks are loaded around the player's current chunk, in a square
shape. The size of the shape is controlled by CHUNK_DISTANCE
- Allow chunks struct to be independent of a position. We load a chunk
TO a position in the world chunk grid (x, y). This allows us to "wrap"
chunks, so we have an endless world, but we are really just wrapping
around
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- More than 1 chunk can now be rendered with the help of the world
struct
- Block coords are now in world space, not local space
- Engine init code cleaned up for cleaner world/chunk handling
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- Chunk is a array of blocks
- World is a array of chunks
- Basic chunk plains generation based on simple linear functions
- Bunch of functions still not implemented, in design phase
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