refactor: split ecs systems into multiple files

1 files changed, 44 insertions, 0 deletions

diff --git a/honey/ecs/script.lua b/honey/ecs/script.lua
new file mode 100644
index 0000000..9ae7d72
--- /dev/null
+++ b/honey/ecs/script.lua
@@ -0,0 +1,44 @@
+local module = {}
+setmetatable(module, {__index=_G})
+setfenv(1, module)
+
+
+-- helper function for retrieving script functions 
+getFunction = function(script)
+	local f = require(script.script)
+	if script.func then
+		return f[script.func]
+	else
+		return f
+	end
+end
+
+
+--===== dispatch messages to handlers =====--
+
+dispatch = function(entities, msg, data)
+	local query = entities:queryComponent(msg)
+	for id, handler in pairs(query) do
+		local f = getFunction(handler)
+		f(entities, id, data)
+	end
+end
+
+--===== script system =====--
+
+system = function(params)
+	return {
+		db=params.db,
+		update=function(self, dt)
+			local entities = self.db:queryComponent("script")
+			for id, script in pairs(entities) do
+				local f = getFunction(script)
+				f(self.db, id, dt)
+			end
+		end
+	}
+end
+
+
+
+return module