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|
/* boot.lua */
static const char* boot_lua = R"(
local cwd = jin.args['cwd'] or '.'
jin.filesystem.init()
jin.filesystem.mount(cwd)
-------------------------------------------------------------------------
-- Config game
-------------------------------------------------------------------------
jin.config = {}
if jin.filesystem.exist("config.lua") then
xpcall(function()jin.config = require "config" end, function()end)
end
jin.config.width = jin.config.width or 580
jin.config.height = jin.config.height or 450
jin.config.vsync = jin.config.vsync or true
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
jin.config.fps = jin.config.fps or 60
jin.config.icon = jin.config.icon or ""
-------------------------------------------------------------------------
-- Default game loop
-------------------------------------------------------------------------
local function call(func, ...)
if func then
return func(...)
end
end
function jin.core.run()
jin.graphics.reset()
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)
jin.graphics.clear()
call(jin.core.onDraw)
jin.graphics.present()
jin.time.sleep(0.001)
end
end
-------------------------------------------------------------------------
-- Boot game
-------------------------------------------------------------------------
-- Display error message.
local function onError(msg)
jin.graphics.showWindow()
local err = "Error:\n" .. msg .. "\n" .. debug.traceback()
jin.graphics.reset()
jin.graphics.setClearColor(100, 100, 100, 255)
jin.graphics.clear()
jin.graphics.print(err, 5, 5)
jin.graphics.present()
while jin.core.running() do
for _, e in pairs(jin.event.poll()) do
if e.type == "Quit" then
jin.core.stop()
end
end
jin.time.sleep(0.001)
end
end
-- No game screen.
local function noGame()
jin.graphics.showWindow()
jin.graphics.reset()
jin.graphics.setClearColor(100, 100, 100, 255)
jin.graphics.clear()
jin.graphics.print("No Game", 5, 5)
jin.graphics.present()
while jin.core.running() do
for _, e in pairs(jin.event.poll()) do
if e.type == "Quit" then
jin.core.stop()
end
end
jin.time.sleep(0.001)
end
end
local function boot()
if jin.filesystem.exist("main.lua") then
call(function()
require"main"
jin.core.run()
end)
else
noGame()
end
end
-------------------------------------------------------------------------
-- Initialize sub systems
-------------------------------------------------------------------------
jin.audio.init()
jin.graphics.init(jin.config)
-------------------------------------------------------------------------
-- Boot game
-------------------------------------------------------------------------
xpcall(boot, onError)
-------------------------------------------------------------------------
-- Destroy sub-systems
-------------------------------------------------------------------------
jin.graphics.destroy()
jin.audio.destroy()
-------------------------------------------------------------------------
-- Quit game
-------------------------------------------------------------------------
jin.core.quit()
)";
|
