100 lines
2.7 KiB
Lua
100 lines
2.7 KiB
Lua
--[[
|
|
CScreen v1.3 by CodeNMore
|
|
A simple way to make resolution-independent Love2D games
|
|
Tested for LOVE 0.10.1
|
|
See: https://github.com/CodeNMore/CScreen
|
|
Zlib License:
|
|
Copyright (c) 2016 CodeNMore
|
|
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 CScreen = {}
|
|
local rx, ry, ctr = 800, 600, true
|
|
local rxv, ryv, fsv, fsvr = 800, 600, 1.0, 1.0
|
|
local tx, ty, rwf, rhf = 0, 0, 800, 600
|
|
local cr, cg, cb, ca = 0, 0, 0, 255
|
|
|
|
-- Initializes CScreen with the initial size values
|
|
function CScreen.init(tw, th, cntr)
|
|
rx = tw or 800
|
|
ry = th or 600
|
|
ctr = cntr or false
|
|
CScreen.update(love.graphics.getWidth(), love.graphics.getHeight())
|
|
end
|
|
|
|
-- Draws letterbox borders
|
|
function CScreen.cease()
|
|
if ctr then
|
|
local pr, pg, pb, pa = love.graphics.getColor()
|
|
love.graphics.setColor(cr, cg, cb, ca)
|
|
love.graphics.scale(fsvr, fsvr)
|
|
|
|
if tx ~= 0 then
|
|
love.graphics.rectangle("fill", -tx, 0, tx, rhf)
|
|
love.graphics.rectangle("fill", rxv, 0, tx, rhf)
|
|
elseif ty ~= 0 then
|
|
love.graphics.rectangle("fill", 0, -ty, rwf, ty)
|
|
love.graphics.rectangle("fill", 0, ryv, rwf, ty)
|
|
end
|
|
|
|
love.graphics.setColor(pr, pg, pb, pa)
|
|
end
|
|
end
|
|
|
|
-- Scales and centers all graphics properly
|
|
function CScreen.apply()
|
|
if ctr then
|
|
love.graphics.translate(tx, ty)
|
|
end
|
|
love.graphics.scale(fsv, fsv)
|
|
end
|
|
|
|
-- Updates CScreen when the window size changes
|
|
function CScreen.update(w, h)
|
|
local sx = w / rx
|
|
local sy = h / ry
|
|
fsv = math.min(sx, sy)
|
|
fsvr = 1 / fsv
|
|
-- Centering
|
|
if ctr and fsv == sx then -- Vertically
|
|
tx = 0
|
|
ty = (h / 2) - (ry * fsv / 2)
|
|
elseif ctr and fsv == sy then -- Horizontally
|
|
ty = 0
|
|
tx = (w / 2) - (rx * fsv / 2)
|
|
end
|
|
-- Variable sets
|
|
rwf = w
|
|
rhf = h
|
|
rxv = rx * fsv
|
|
ryv = ry * fsv
|
|
end
|
|
|
|
-- Convert from window coordinates to target coordinates
|
|
function CScreen.project(x, y)
|
|
return math.floor((x - tx) / fsv), math.floor((y - ty) / fsv)
|
|
end
|
|
|
|
-- Change letterbox color
|
|
function CScreen.setColor(r, g, b, a)
|
|
cr = r
|
|
cg = g
|
|
cb = b
|
|
ca = a
|
|
end
|
|
|
|
-- Return the table for use
|
|
return CScreen
|