src/core: add screen system as a cscreen wrapper

sonic-radiance.love/core/init.lua

@@ -29,11 +29,13 @@ local DebugSystem = require "core.debug"
 
 local Options     = require "core.options"
 local Input       = require "core.input"
+local Screen      = require "core.screen"
 
 function CoreSystem:new()
   self.debug    = DebugSystem(self)
   self.options  = Options(self)
   self.input    = Input(self)
+  self.screen   = Screen(self)
 end
 
 function CoreSystem:update(dt)

sonic-radiance.love/core/screen.lua

@@ -0,0 +1,64 @@
+-- core/screen.lua :: Basic screen manager. Use CScreen as a backend, and works
+-- as an abstraction layer around CScreen.
+
+--[[
+  Copyright © 2019 Kazhnuz
+
+  Permission is hereby granted, free of charge, to any person obtaining a copy of
+  this software and associated documentation files (the "Software"), to deal in
+  the Software without restriction, including without limitation the rights to
+  use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+  the Software, and to permit persons to whom the Software is furnished to do so,
+  subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in all
+  copies or substantial portions of the Software.
+
+  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+  FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+  COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+  IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+  CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+]]
+
+local ScreenManager = Object:extend()
+
+local CScreen = require "libs.cscreen"
+
+local SCREEN_HEIGHT = 240
+local SCREEN_WIDTH  = 424
+
+function ScreenManager:new(controller)
+  self.controller = controller
+  self.data       = self.controller.options.data.video
+  self:applySettings()
+  CScreen.init(SCREEN_WIDTH, SCREEN_HEIGHT, true)
+  CScreen.setColor(0, 0, 0, 1)
+
+  love.graphics.setDefaultFilter( "nearest", "nearest", 1 )
+end
+
+function ScreenManager:applySettings()
+  self.data       = self.controller.options.data.video
+
+  local flags = {}
+  flags.vsync = self.data.vsync
+  flags.borderless = (self.data.border == false)
+
+  love.window.setMode(SCREEN_WIDTH * self.data.resolution, SCREEN_WIDTH * self.data.resolution, flags)
+  love.window.setFullscreen( self.data.fullscreen )
+
+  local width, height = love.window.getMode()
+  CScreen.update(width, height)
+end
+
+function ScreenManager:apply()
+  CScreen.apply()
+end
+
+function ScreenManager:cease()
+  CScreen.cease()
+end
+
+return ScreenManager

sonic-radiance.love/libs/cscreen.lua

@@ -0,0 +1,99 @@
+--[[
+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