1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
|
local glfw = honey.glfw
local ecs = require 'honey.ecs.ecs'
local node = require 'honey.ecs.node'
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(db, msg, data)
local query = db:queryComponent(msg)
for id, handler in pairs(query) do
local f = getFunction(handler)
f(entities, id, data)
end
end
--===== bind window events to script handlers =====--
bindEvents = function(window, db)
glfw.SetFramebufferSizeCallback(window, function(w, width, height)
dispatch(db, "onFramebufferSize", {window=w, width=width, height=height})
end)
glfw.SetKeyCallback(window, function(w, key, scancode, action, mods)
dispatch(db, "onKey", {window=w, key=key, scancode=scancode, action=action, mods=mods})
end)
glfw.SetCursorPosCallback(window, function(w, xpos, ypos)
dispatch(db, "onCursorPos", {window=w, xpos=xpos, ypos=ypos})
end)
glfw.SetMouseButtonCallback(window, function(w, button, action, mods)
dispatch(db, "onMouseButton", {window=w, button=button, action=action, mods=mods})
end)
end
--===== script system =====--
local script = ecs.System("script", function(db, dt, params)
local entities = db:queryComponent("script")
for id, script in pairs(entities) do
local f = getFunction(script)
f(db, id, dt)
end
end)
script:addDependencies(node.system)
system = {script}
return module
|
