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love.lua
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427 lines (356 loc) · 10.3 KB
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--=========== Copyright © 2020, Planimeter, All rights reserved. ===========--
--
-- Purpose:
--
--==========================================================================--
--[[
* Copyright (c) 2006-2018 LOVE Development Team
*
* This software is provided 'as-is', without any express or implied
* warranty. In no event will the authors be held liable for any damages
* arising from the use of this software.
*
* Permission is granted to anyone to use this software for any purpose,
* including commercial applications, and to alter it and redistribute it
* freely, subject to the following restrictions:
*
* 1. The origin of this software must not be misrepresented; you must not
* claim that you wrote the original software. If you use this software
* in a product, an acknowledgment in the product documentation would be
* appreciated but is not required.
* 2. Altered source versions must be plainly marked as such, and must not be
* misrepresented as being the original software.
* 3. This notice may not be removed or altered from any source distribution.
]]
local GL = require( "opengl" )
local ffi = require( "ffi" )
local jit = jit
local print = print
local require = require
local type = type
local framework = framework
_G.love = framework
local function notimplemented( key, level )
level = level or 2
local ar = debug.getinfo( level, "Sl" ) --[[ get info about it ]]
local ret = nil
if ( ar.currentline > 0 ) then --[[ is there info? ]]
ret = string.format( "%s: %s:%d: " ..
"attempt to index nil value '%s' " ..
"(not implemented)", arg[ -1 ],
ar.short_src, ar.currentline, key )
end
print( debug.traceback( ret, level ) )
end
local function love_audio()
module( "love.audio" )
return _M
end
local function love_filesystem()
module( "love.filesystem" )
function getRequirePath()
return "./?.lua;lua/?.lua;lua/?/init.lua;"
end
function setIdentity()
notimplemented( "setIdentity", 3 )
end
function getInfo( filename )
if ( not framework.filesystem.exists( filename ) ) then
return nil
end
return {
modtime = 0
}
end
return _M
end
local function love_graphics()
require( "framework.graphics" )
local unpack = unpack
local select = select
require( "framework.graphics.framebuffer" )
local _R = debug.getregistry()
_R.Canvas = framework.graphics.framebuffer
module( "love.graphics" )
_blendMode = _blendMode or "alpha"
_alphaMode = _alphaMode or "alphamultiply"
function getBlendMode()
return _blendMode, _alphaMode
end
getCanvas = framework.graphics.getFramebuffer
_getColor = _getColor or framework.graphics.getColor
function getColor()
return unpack( _getColor() )
end
function getDPIScale()
return 1
end
function getWidth()
return select( 1, framework.graphics.getSize() )
end
function getHeight()
return select( 2, framework.graphics.getSize() )
end
function newCanvas( width, height )
return framework.graphics.newFramebuffer( "color", width, height )
end
function printf( ... )
framework.graphics.print( ... )
notimplemented( "printf", 3 )
end
_setBackgroundColor = _setBackgroundColor or framework.graphics.setBackgroundColor
function setBackgroundColor( r, g, b, a )
if ( type( r ) ~= "table" ) then
_setBackgroundColor( { r, g, b, a } )
return
end
_setBackgroundColor( r )
end
function setBlendMode( mode, alphamode )
alphamode = alphamode or "alphamultiply"
local func = GL.GL_FUNC_ADD
local srcRGB = GL.GL_ONE
local srcA = GL.GL_ONE
local dstRGB = GL.GL_ZERO
local dstA = GL.GL_ZERO
if ( mode == "alpha" ) then
srcRGB = GL.GL_ONE
srcA = GL.GL_ONE
dstRGB = GL.GL_ONE_MINUS_SRC_ALPHA
dstA = GL.GL_ONE_MINUS_SRC_ALPHA
elseif ( mode == "multiply" ) then
srcRGB = GL.GL_DST_COLOR
srcA = GL.GL_DST_COLOR
dstRGB = GL.GL_ZERO
dstA = GL.GL_ZERO
elseif ( mode == "subtract" ) then
func = GL.GL_FUNC_REVERSE_SUBTRACT
elseif( mode == "add" ) then
srcRGB = GL.GL_ONE
srcA = GL.GL_ZERO
dstRGB = GL.GL_ONE
dstA = GL.GL_ONE
elseif ( mode == "lighten" ) then
func = GL.GL_MAX
elseif ( mode == "darken" ) then
func = GL.GL_MIN
elseif ( mode == "screen" ) then
srcRGB = GL.GL_ONE
srcA = GL.GL_ONE
dstRGB = GL.GL_ONE_MINUS_SRC_COLOR
dstA = GL.GL_ONE_MINUS_SRC_COLOR
-- elseif ( mode == "replace" or mode == "none" ) then
else
srcRGB = GL.GL_ONE
srcA = GL.GL_ONE
dstRGB = GL.GL_ZERO
dstA = GL.GL_ZERO
end
-- We can only do alpha-multiplication when srcRGB would have been unmodified.
if (srcRGB == GL.GL_ONE and alphamode == "alphamultiply" and mode ~= "none" ) then
srcRGB = GL.GL_SRC_ALPHA
end
GL.glBlendEquation( func )
GL.glBlendFuncSeparate( srcRGB, dstRGB, srcA, dstA )
_blendMode = mode
_alphaMode = alphamode
end
_setColor = _setColor or framework.graphics.setColor
function setColor( r, g, b, a )
if ( type( r ) ~= "table" ) then
_setColor( { r, g, b, a } )
return
end
_setColor( r )
end
function setDefaultFilter( min, mag, anisotropy )
notimplemented( "setDefaultFilter", 3 )
end
function setCanvas( canvas )
if ( canvas and canvas.stencil ) then
framework.graphics.setFramebuffer( canvas[ 1 ] )
else
framework.graphics.setFramebuffer( canvas )
end
end
function setStencilTest()
notimplemented( "setStencilTest", 3 )
end
function stencil()
notimplemented( "stencil", 3 )
end
return _M
end
local function love_image()
require( "framework.graphics.image" )
module( "love.image" )
local image = framework.graphics.image
return _M
end
local function love_keyboard()
require( "framework.keyboard" )
module( "love.keyboard" )
isDown = framework.keyboard.isPressed
return _M
end
local function love_mouse()
module( "love.mouse" )
return _M
end
local function love_physics()
require( "framework.physics" )
module( "love.physics" )
newWorld = framework.physics.newSpace
return _M
end
local function love_system()
module( "love.system" )
function getOS()
if ( jit.os == "OSX" ) then
return "OS X"
elseif ( jit.os == "Other" ) then
return "Unknown"
else
return jit.os
end
end
return _M
end
local function love_timer()
require( "framework.timer" )
module( "love.timer" )
getTime = framework.timer.getTime
return _M
end
local function love_window()
module( "love.window" )
function getDPIScale()
return 1
end
function getFullscreenModes()
notimplemented( "getFullscreenModes", 3 )
return {
{ width = 800, height = 600 }
}
end
function setMode()
notimplemented( "setMode", 3 )
end
return _M
end
-- From https://bitbucket.org/rude/love/src/8c6f6a0ca1f0d880c6aa73aaeff0bc510370f737/src/modules/love/love.cpp#lines-147
local modules = {
[ "love.audio" ] = love_audio,
[ "love.filesystem" ] = love_filesystem,
[ "love.graphics" ] = love_graphics,
[ "love.image" ] = love_image,
[ "love.keyboard" ] = love_keyboard,
[ "love.mouse" ] = love_mouse,
[ "love.physics" ] = love_physics,
[ "love.system" ] = love_system,
[ "love.timer" ] = love_timer,
[ "love.window" ] = love_window
}
-- Preload module loaders.
for name, func in pairs( modules ) do
package.preload[ name ] = func()
end
function love.createhandlers()
-- Standard callback handlers.
love.handlers = setmetatable({
keypressed = function (b,s,r)
if love.keypressed then return love.keypressed(b,s,r) end
end,
keyreleased = function (b,s)
if love.keyreleased then return love.keyreleased(b,s) end
end,
textinput = function (t)
if love.textinput then return love.textinput(t) end
end,
textedited = function (t,s,l)
if love.textedited then return love.textedited(t,s,l) end
end,
mousemoved = function (x,y,dx,dy,t)
if love.mousemoved then return love.mousemoved(x,y,dx,dy,t) end
end,
mousepressed = function (x,y,b,t,c)
if love.mousepressed then return love.mousepressed(x,y,b,t,c) end
end,
mousereleased = function (x,y,b,t,c)
if love.mousereleased then return love.mousereleased(x,y,b,t,c) end
end,
wheelmoved = function (x,y)
if love.wheelmoved then return love.wheelmoved(x,y) end
end,
touchpressed = function (id,x,y,dx,dy,p)
if love.touchpressed then return love.touchpressed(id,x,y,dx,dy,p) end
end,
touchreleased = function (id,x,y,dx,dy,p)
if love.touchreleased then return love.touchreleased(id,x,y,dx,dy,p) end
end,
touchmoved = function (id,x,y,dx,dy,p)
if love.touchmoved then return love.touchmoved(id,x,y,dx,dy,p) end
end,
joystickpressed = function (j,b)
if love.joystickpressed then return love.joystickpressed(j,b) end
end,
joystickreleased = function (j,b)
if love.joystickreleased then return love.joystickreleased(j,b) end
end,
joystickaxis = function (j,a,v)
if love.joystickaxis then return love.joystickaxis(j,a,v) end
end,
joystickhat = function (j,h,v)
if love.joystickhat then return love.joystickhat(j,h,v) end
end,
gamepadpressed = function (j,b)
if love.gamepadpressed then return love.gamepadpressed(j,b) end
end,
gamepadreleased = function (j,b)
if love.gamepadreleased then return love.gamepadreleased(j,b) end
end,
gamepadaxis = function (j,a,v)
if love.gamepadaxis then return love.gamepadaxis(j,a,v) end
end,
joystickadded = function (j)
if love.joystickadded then return love.joystickadded(j) end
end,
joystickremoved = function (j)
if love.joystickremoved then return love.joystickremoved(j) end
end,
focus = function (f)
if love.focus then return love.focus(f) end
end,
mousefocus = function (f)
if love.mousefocus then return love.mousefocus(f) end
end,
visible = function (v)
if love.visible then return love.visible(v) end
end,
quit = function ()
return
end,
threaderror = function (t, err)
if love.threaderror then return love.threaderror(t, err) end
end,
resize = function (w, h)
if love.resize then return love.resize(w, h) end
end,
filedropped = function (f)
if love.filedropped then return love.filedropped(f) end
end,
directorydropped = function (dir)
if love.directorydropped then return love.directorydropped(dir) end
end,
lowmemory = function ()
if love.lowmemory then love.lowmemory() end
collectgarbage()
collectgarbage()
end,
}, {
__index = function(self, name)
error("Unknown event: " .. name)
end,
})
end
love.createhandlers()