From 2ef994ac61942b171ead67a9abe9f8d732219bd6 Mon Sep 17 00:00:00 2001
From: Eleazar Matheus <e2matheus@gmail.com>
Date: Sun, 17 May 2020 09:13:06 +0200
Subject: [PATCH] Fix pong-final rendering white screen
Update main.lua to call love.graphics.clear() using color components
ranging from 0 to 1, while running Love 11.0.
Inside love.draw(), main.lua called love.graphics.clear() to render a
gray background color using color components that ranged from 0 to 255.
In versions subsequent to 11.0, those components are within the range of
0 to 1 instead of 0 to 255. In which case, all components greater than
1 are clamped to 1. As a result, love.graphics.clear() renders a white
screen.
Add a variable that stores true or false, depending on whether the
current Love 2D version is prior to 11.0. Use that variable to set
the components appropriately.
---
pong-final/main.lua | 18 +++++++++++++++++-
1 file changed, 17 insertions(+), 1 deletion(-)
diff --git a/pong-final/main.lua b/pong-final/main.lua
index c8df5fc..4b094d3 100644
--- a/pong-final/main.lua
+++ b/pong-final/main.lua
@@ -39,6 +39,22 @@ require 'Paddle'
-- but which will mechanically function very differently
require 'Ball'
+-- Stores true or false, depending on whether the current Love 2D version is prior to 11.0
+local love11 = love.getVersion() == 11
+
+-- In versions prior to 11.0, color component values were within the range of 0 to 255 instead of 0 to 1.
+-- Set Clear Color to #282d34 (40, 45, 52) with an alpha of 100%
+--
+-- https://love2d.org/wiki/love.graphics.clear
+r0to255 = 40
+g0to255 = 45
+b0to255 = 52
+a0to255 = 255
+local rBackground = love11 and r0to255/255 or r0to255
+local gBackground = love11 and g0to255/255 or g0to255
+local bBackground = love11 and b0to255/255 or b0to255
+local aBackground = love11 and a0to255/255 or a0to255
+
-- size of our actual window
WINDOW_WIDTH = 1280
WINDOW_HEIGHT = 720
@@ -303,7 +319,7 @@ function love.draw()
-- begin drawing with push, in our virtual resolution
push:start()
- love.graphics.clear(40, 45, 52, 255)
+ love.graphics.clear(rBackground, gBackground, bBackground, aBackground)
-- render different things depending on which part of the game we're in
if gameState == 'start' then