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|
/* boot.lua */
static const char* boot_lua = R"(
jin._argv[2] = jin._argv[2] or '.'
jin.filesystem.init()
jin.filesystem.mount(jin._argv[2])
-------------------------------------------------------------------------
-- Config game
-------------------------------------------------------------------------
jin.config = {}
if jin.filesystem.exist("config.lua") then
jin.config = require "config"
end
jin.config.width = jin.config.width or 576
jin.config.height = jin.config.height or 448
jin.config.vsync = jin.config.vsync or false
jin.config.title = jin.config.title or ("jin v" .. jin.version())
jin.config.resizable = jin.config.resizable or false
jin.config.fullscreen = jin.config.fullscreen or false
-------------------------------------------------------------------------
-- Initialize sub systems
-------------------------------------------------------------------------
jin.graphics.init(jin.config)
jin.audio.init()
-------------------------------------------------------------------------
-- Default game loop
-------------------------------------------------------------------------
local function call(func, ...)
if func then
return func(...)
end
end
jin.core.setHandler = function(handler)
if handler == nil then
return
end
jin.core.onLoad = handler.onLoad
jin.core.onEvent = handler.onEvent
jin.core.onUpdate = handler.onUpdate
jin.core.onDraw = handler.onDraw
end
function jin.core.run()
call(jin.core.onLoad)
local dt = 0
local previous = jin.time.second()
local current = previous
while jin.core.running() do
for _, e in pairs(jin.event.poll()) do
if e.type == "keydown" then
jin.keyboard.set(e.key, true)
elseif e.type == "keyup" then
jin.keyboard.set(e.key, false)
end
call(jin.core.onEvent, e)
end
previous = current
current = jin.time.second()
dt = current - previous
call(jin.core.onUpdate, dt)
if jin.graphics then
jin.graphics.unbindCanvas()
jin.graphics.clear()
jin.graphics.setColor()
jin.graphics.setFont()
call(jin.core.onDraw)
jin.graphics.present()
end
if jin.time then
jin.time.sleep(0.001)
end
end
end
-------------------------------------------------------------------------
-- No game handler
-------------------------------------------------------------------------
jin.nogame = {
cs = 64,
sw = jin.graphics.getWidth(),
sh = jin.graphics.getHeight(),
cw = 0,
ch = 0,
ww = 6,
ww2 = 6*2,
speed = 4,
t = 0,
onLoad = function()
local nogame = jin.nogame
nogame.cw = nogame.sw / nogame.cs
nogame.ch = nogame.sh / nogame.cs
nogame.t = nogame.ww - 1
end,
onEvent = function(e)
if e.type == 'quit' then
jin.core.stop()
end
end,
onUpdate = function(dt)
local nogame = jin.nogame
nogame.t = nogame.t + dt * nogame.speed
if nogame.t > nogame.ww2 then
nogame.t = nogame.t - nogame.ww2
end
end,
circle = function(x, y, r)
local nogame = jin.nogame
if r % nogame.ww2 > nogame.ww then
return
end
r = math.sin((r/nogame.ww)*math.pi)*nogame.cs/2
local fact = (x + y) / nogame.ch * nogame.cw
jin.graphics.setColor(
155 + 100 * math.sin(fact),
155 + 100 * math.cos(fact),
155 + 100 * math.sin(fact * fact),
255
)
jin.graphics.circle("fill", x*nogame.cs + nogame.cs/2, y*nogame.cs + nogame.cs/2, r)
end,
onDraw = function()
local nogame = jin.nogame
for y = 0, nogame.ch - 1 do
for x = 0, nogame.cw - 1 do
nogame.circle(x, y, nogame.t+x+y)
end
end
end
}
-------------------------------------------------------------------------
-- Boot jin
-------------------------------------------------------------------------
local function onError(msg)
local tab = ' '
print("Error:\n" .. msg)
function jin.core.onEvent(e)
if e.type == 'quit' then
jin.core.stop()
end
end
local ww, wh = jin.graphics.getSize()
function jin.core.onDraw()
jin.graphics.write("Error: ", 10, 10, 30, 3, 30)
jin.graphics.write(msg, 10, 50)
end
end
local function boot()
if jin.filesystem.exist("main.lua") then
-- require main game script
xpcall(function() require"main" end, onError)
jin.core.run()
else
-- no game
jin.core.setHandler(jin.nogame)
jin.core.run()
end
jin.graphics.destroy()
jin.audio.destroy()
jin.core.quit()
end
xpcall(boot, onError)
)";
|
