implement new rendering system using gpu instancing

this has extremely better performance on my machine

also, player is circle now

1 files changed, 42 insertions, 0 deletions

diff --git a/client/chunk.lua b/client/chunk.lua
new file mode 100644
index 0000000..73fe949
--- /dev/null
+++ b/client/chunk.lua
@@ -0,0 +1,42 @@
+local class = require"common.class"
+local chunk = require"common.chunk"
+local Chunk = require"common.chunk".Chunk
+local CHUNK_SIZE = require"common.constants".CHUNK_SIZE
+
+local ChunkC = class.extend(chunk.Chunk)
+function ChunkC.make(cls,...)
+	local self = chunk.Chunk.make(cls,...)
+	self.imesh = cls.imesh_from_chunk_data(self)
+	return self
+end
+local function tile_to_vattr(tile)
+	-- for now tiles are always numbers
+	-- so this just returns the input
+	-- this function might move to drawing.lua once it does something less trivial
+	assert(type(tile) == "number","can't send non-numerical tile to gpu")
+	return tile
+end
+function ChunkC.imesh_from_chunk_data(the_chunk)
+	local mesh_data = {}
+	for q=0,CHUNK_SIZE-1 do
+		for r =0,CHUNK_SIZE-1 do
+			local t = the_chunk:_atqr(q,r)
+			table.insert(mesh_data,{tile_to_vattr(t)})
+		end
+	end
+
+	local imesh = love.graphics.newMesh({
+		{"tile_type","float",1}
+	}, mesh_data, nil, "dynamic")
+
+	return imesh
+end
+
+function ChunkC.set_at(self,hoffs,tile)
+	Chunk.set_at(self,hoffs,tile)
+
+	local idx = chunk.index(hoffs.q,hoffs.r)
+	self.imesh:setVertexAttribute(idx, 1, tile_to_vattr(tile))
+end
+
+return {ChunkC=ChunkC}