mirror of https://github.com/bjornbytes/lovr.git
340 lines
10 KiB
Lua
340 lines
10 KiB
Lua
lovr = require 'lovr'
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local function nogame()
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function lovr.conf(t)
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t.headset.supersample = true
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t.modules.audio = false
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t.modules.physics = false
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t.modules.thread = false
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end
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local models = {}
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function lovr.load()
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if not lovr.graphics then
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print(string.format('LÖVR %d.%d.%d\nNo game', lovr.getVersion()))
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lovr.event.quit()
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return
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end
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lovr.graphics.setBackgroundColor(0x20232c)
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lovr.graphics.setCullingEnabled(true)
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logo = lovr.graphics.newShader([[
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vec4 position(mat4 projection, mat4 transform, vec4 vertex) {
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return projection * transform * vertex;
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}
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]], [[
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vec4 color(vec4 graphicsColor, sampler2D image, vec2 uv) {
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float y = (1. - uv.y);
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uv = uv * 4. - 2.;
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const float k = sqrt(3.);
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uv.x = abs(uv.x) - 1.;
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uv.y = uv.y + 1. / k + .25;
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if (uv.x + k * uv.y > 0.) {
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uv = vec2(uv.x - k * uv.y, -k * uv.x - uv.y) / 2.;
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}
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uv.x -= clamp(uv.x, -2., 0.);
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float sdf = -length(uv) * sign(uv.y) - .5;
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float w = fwidth(sdf) * .5;
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float alpha = smoothstep(.22 + w, .22 - w, sdf);
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vec3 color = mix(vec3(.094, .662, .890), vec3(.913, .275, .6), clamp(y * 1.5 - .25, 0., 1.));
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color = mix(color, vec3(.2, .2, .24), smoothstep(-.12 + w, -.12 - w, sdf));
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return vec4(pow(color, vec3(2.2)), alpha);
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}
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]], { flags = { highp = true } })
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text = lovr.graphics.newShader('font', { flags = { highp = true } })
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end
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function lovr.draw()
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lovr.graphics.setColor(0xffffff)
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local padding = .1
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local font = lovr.graphics.getFont()
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local fade = .315 + .685 * math.abs(math.sin(lovr.timer.getTime() * 2))
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local titlePosition = 1.4 - padding
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local subtitlePosition = titlePosition - font:getHeight() * .25 - padding
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lovr.graphics.setShader(logo)
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lovr.graphics.plane('fill', 0, 1.9, -3, 1, 1, 0, 0, 1)
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lovr.graphics.setShader(text)
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lovr.graphics.setColor(0xffffff)
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lovr.graphics.print('LÖVR', -.012, titlePosition, -3, .25, 0, 0, 1, 0, nil, 'center', 'top')
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lovr.graphics.setColor(.9, .9, .9, fade)
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lovr.graphics.print('No game :(', -.005, subtitlePosition, -3, .15, 0, 0, 1, 0, nil, 'center', 'top')
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lovr.graphics.setColor(0xffffff)
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lovr.graphics.setShader()
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if lovr.headset then
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for i, hand in ipairs(lovr.headset.getHands()) do
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models[hand] = models[hand] or lovr.headset.newModel(hand, { animated = true })
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if models[hand] then
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lovr.headset.animate(hand, models[hand])
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local pose = mat4(lovr.headset.getPose(hand))
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if models[hand]:hasJoints() then
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animated = animated or lovr.graphics.newShader('unlit', { flags = { animated = true } })
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lovr.graphics.setShader(animated)
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lovr.graphics.setColorMask()
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models[hand]:draw(pose)
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lovr.graphics.setColorMask(true, true, true, true)
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lovr.graphics.setColor(0, 0, 0, .5)
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models[hand]:draw(pose)
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lovr.graphics.setShader()
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else
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models[hand]:draw(pose)
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end
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end
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end
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end
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lovr.graphics.setColor(0xffffff)
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end
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end
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-- Note: Cannot be overloaded
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function lovr.boot()
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local conf = {
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version = '0.15.0',
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identity = 'default',
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saveprecedence = true,
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modules = {
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audio = true,
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data = true,
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event = true,
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graphics = true,
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headset = true,
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math = true,
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physics = true,
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system = true,
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thread = true,
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timer = true
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},
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audio = {
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start = true,
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spatializer = nil
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},
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graphics = {
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debug = false
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},
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headset = {
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drivers = { 'openxr', 'webxr', 'desktop' },
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supersample = false,
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offset = 1.7,
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msaa = 4,
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overlay = false
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},
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math = {
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globals = true
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},
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window = {
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width = 1080,
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height = 600,
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fullscreen = false,
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resizable = false,
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msaa = 0,
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title = 'LÖVR',
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icon = nil,
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vsync = 1
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}
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}
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lovr.filesystem = require('lovr.filesystem')
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local hasConf, hasMain = lovr.filesystem.isFile('conf.lua'), lovr.filesystem.isFile('main.lua')
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if not lovr.filesystem.getSource() or not (hasConf or hasMain) then nogame() end
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local confOk, confError = true
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if hasConf then confOk, confError = pcall(require, 'conf') end
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if confOk and lovr.conf then confOk, confError = pcall(lovr.conf, conf) end
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lovr._setConf(conf)
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lovr.filesystem.setIdentity(conf.identity, conf.saveprecedence)
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for module in pairs(conf.modules) do
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if conf.modules[module] then
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local ok, result = pcall(require, 'lovr.' .. module)
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if not ok then
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print(string.format('Warning: Could not load module %q: %s', module, result))
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else
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lovr[module] = result
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end
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end
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end
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if lovr.headset and lovr.graphics and conf.window then
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lovr.headset.start()
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end
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lovr.handlers = setmetatable({}, { __index = lovr })
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if not confOk then error(confError) end
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if hasMain then require 'main' end
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return lovr.run()
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end
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function lovr.run()
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local dt = 0
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if lovr.timer then lovr.timer.step() end
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if lovr.load then lovr.load(arg) end
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return function()
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if lovr.event then
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lovr.event.pump()
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for name, a, b, c, d in lovr.event.poll() do
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if name == 'restart' then
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local cookie = lovr.restart and lovr.restart()
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return 'restart', cookie
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elseif name == 'quit' and (not lovr.quit or not lovr.quit(a)) then
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return a or 0
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end
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if lovr.handlers[name] then lovr.handlers[name](a, b, c, d) end
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end
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end
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if lovr.timer then dt = lovr.timer.step() end
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if lovr.headset then lovr.headset.update(dt) end
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if lovr.update then lovr.update(dt) end
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if lovr.graphics then
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lovr.graphics.origin()
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if lovr.headset then
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lovr.headset.renderTo(lovr.draw)
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end
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if lovr.graphics.hasWindow() then
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lovr.mirror()
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end
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lovr.graphics.present()
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end
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if lovr.math then lovr.math.drain() end
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end
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end
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function lovr.mirror()
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if lovr.headset then -- On some systems, headset module will be disabled
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local blend, alpha = lovr.graphics.getBlendMode()
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lovr.graphics.setBlendMode()
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local texture = lovr.headset.getMirrorTexture()
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if texture then -- On some drivers, texture is printed directly to the window
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lovr.graphics.fill(texture)
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end
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lovr.graphics.setBlendMode(blend, alpha)
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else
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lovr.graphics.clear()
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if lovr.draw then
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lovr.draw()
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end
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end
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end
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local function formatTraceback(s)
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return s:gsub('\n[^\n]+$', ''):gsub('\t', ''):gsub('stack traceback', '\nStack')
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end
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function lovr.errhand(message, traceback)
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message = tostring(message)
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message = message .. formatTraceback(traceback or debug.traceback('', 4))
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print('Error:\n' .. message)
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if not lovr.graphics then return function() return 1 end end
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lovr.graphics.reset()
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lovr.graphics.setBackgroundColor(.11, .10, .14)
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lovr.graphics.setColor(.85, .85, .85)
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local font = lovr.graphics.getFont()
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font:setPixelDensity()
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font:setFlipEnabled(false)
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local wrap = .7 * font:getPixelDensity()
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local width, lines = font:getWidth(message, wrap)
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local height = 2.6 + lines
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local y = math.min(height / 2, 10)
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local function render()
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lovr.graphics.print('Error', -width / 2, y, -20, 1.6, 0, 0, 0, 0, nil, 'left', 'top')
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lovr.graphics.print(message, -width / 2, y - 2.6, -20, 1.0, 0, 0, 0, 0, wrap, 'left', 'top')
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end
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return function()
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lovr.event.pump()
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for name, a in lovr.event.poll() do
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if name == 'quit' then return a or 1
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elseif name == 'restart' then return 'restart', lovr.restart and lovr.restart() end
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end
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lovr.graphics.origin()
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if lovr.headset then
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lovr.headset.update(0)
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lovr.headset.renderTo(render)
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end
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if lovr.graphics.hasWindow() then
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lovr.graphics.setViewPose(1)
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local width, height = lovr.graphics.getDimensions()
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local projection = lovr.math.mat4():perspective(.1, 100, math.rad(67), width / height)
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lovr.graphics.setProjection(1, projection)
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lovr.graphics.clear()
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render()
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end
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lovr.graphics.present()
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if lovr.math then
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lovr.math.drain()
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end
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end
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end
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function lovr.threaderror(thread, err)
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error('Thread error\n\n' .. err, 0)
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end
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function lovr.log(message, level, tag)
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message = message:gsub('\n$', '')
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print(message)
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end
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-- This splits up the string returned by luax_getstack so it looks like the error message plus the string from
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-- debug.traceback(). This includes splitting on the newline before 'stack traceback:' and appending a newline
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local function splitOnLabelLine(s, t)
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local at = s:reverse():find(t:reverse())
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if at then
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local slen = #s
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at = (#s - at - #t + 2)
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return s:sub(1, at-2), s:sub(at,slen) .. '\n'
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else
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return s, ''
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end
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end
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-- lovr will run this function in its own coroutine
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return function()
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local errored = false -- lovr.errhand may only be called once
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local function onerror(e, tb) -- wrapper for errhand to ensure it is only called once
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local function abortclean()
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return 1
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end
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if not errored then
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errored = true
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return lovr.errhand(e, tb) or abortclean
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else
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print('Error occurred while trying to display another error:\n' ..
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tostring(e) .. formatTraceback(tb or debug.traceback('', 2)))
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return abortclean
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end
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end
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-- Executes lovr.boot and lovr.run.
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-- continuation, afterward, will be either lovr.run's per-frame function, or the result of errhand.
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local _, continuation = xpcall(lovr.boot, onerror)
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while true do
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if type(continuation) == 'string' then -- LuaJIT returns a fixed string if an error occurs in an xpcall error handler
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print('Error occurred while trying to display another error: ' .. continuation)
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return 1
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end
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local ok, result, extra = xpcall(continuation, onerror)
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if result and ok then return result, extra -- Result is value returned by function. Return it.
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elseif not ok then continuation = result end -- Result is value returned by error handler. Make it the new error handler.
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local externerror = coroutine.yield() -- Return control to C code
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if externerror then -- A must-report error occurred in the C code
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local errorpart, tracepart = splitOnLabelLine(externerror, 'stack traceback:')
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continuation = onerror(errorpart, tracepart) -- Switch continuation to lovr.errhand
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end
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end
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end
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