Write game

.gitignore

+build

configure.sh

+#!/usr/bin/env sh
+
+set -e
+
+usage() {
+
+	printf 'Usage %s ' "${1}";
+	printf '[-h|--help] [-d|--debug] \n\t\t[-c \033[4mcflags\033[m] ';
+	printf '[-l \033[4mldlibs\033[m] ';
+	printf '[--ldflags \033[4mldflags\033[m]\n\t\t';
+	printf '[-p \033[4mpkgconfig package\033[m] ';
+	printf '[--cc \033[4mcompiler\033[m] ';
+	printf '\033[4mbuild dir\033[m\n\n';
+
+}
+
+ARGS=$(getopt -o "hdc:l:p:" \
+	--long "help,debug,cflags:,ldlibs:,ldflags:,pkg:,cc:" \
+	-n "$0" -- "$@");
+if [ "$?" -ne "0" ]; then
+	exit 1;
+fi
+
+eval set -- "$ARGS";
+
+zero="$0";
+PKGS="gtk4 libadwaita-1 librsvg-2.0"
+
+while true; do
+
+	case "$1" in
+		'-h'|'--help')
+			usage "${zero}";
+			exit 0;
+			;;
+
+		'-d'|'--debug')
+			DEBUG=1;
+			shift;
+			;;
+
+		'-c'|'--cflags')
+			CFLAGS="${CFLAGS} ${2}";
+			shift 2;
+			;;
+
+		'-l'|'--ldlibs')
+			LDLIBS="${LDLIBS} ${2}";
+			shift 2;
+			;;
+
+		'--ldflags')
+			LDFLAGS="${LDFLAGS} ${2}";
+			shift 2;
+			;;
+
+		'-p'|'--pkg')
+			case "${PKGS}" in
+				'*${2}*') ;;
+				*) PKGS="${PKGS} ${2}";;
+			esac
+			shift 2;
+			;;
+
+		'--cc')
+			CC="${2}";
+			shift 2;
+			;;
+
+		'--')
+			shift;
+			break;
+			;;
+
+		*)
+			usage "${zero}" >&2;
+			exit1 ;
+			;;
+
+	esac
+
+done
+
+if [ -z "${1}" ]; then
+	usage "${zero}" >&2;
+	exit 1;
+fi
+
+builddir="$(realpath "${1}")";
+mkdir -p "${builddir}";
+
+srcdir="$(realpath --relative-to "${builddir}" "$(dirname "${zero}")")";
+srcs="$(cd "${builddir}/${srcdir}"; find ./src -name "*.c")";
+ui_files="$(cd "${builddir}/${srcdir}"; find ./res/ -name "*.blp")";
+res_files="$(cd "${builddir}/${srcdir}";
+	find ./res/ -name "*.gresource.xml")";
+other_res_files=$(cd "${builddir}/${srcdir}";
+	find ./res -type f -! -name "*.blp" -a -! -name "*.gresource.xml");
+
+if [ -n "${DEBUG}" ]; then
+	CFLAGS="${CFLAGS} -DDEBUG -O0 -g3";
+else
+	CFLAGS="${CFLAGS} -O2";
+fi
+CFLAGS="${CFLAGS} -Wall -Wextra -Werror";
+CFLAGS="${CFLAGS} -Wno-expansion-to-defined";
+CFLAGS="${CFLAGS} -D_GNU_SOURCE";
+CFLAGS="${CFLAGS} -I${srcdir}/inc -Iinc";
+CFLAGS="${CFLAGS} $(pkg-config --cflags ${PKGS})";
+LDLIBS="${LDLIBS} -lm -lwiringPi $(pkg-config --libs ${PKGS})";
+
+{
+
+# Blueprint {{{
+
+cat << EOF
+rule blueprint
+ command = blueprint-compiler compile --output \${out} \${in}
+EOF
+
+for ui_file in ${ui_files}; do
+	printf 'build %s: blueprint %s\n' \
+		"${ui_file%.blp}.ui" "${srcdir}/${ui_file}";
+done
+
+#}}}
+
+# Resources {{{
+
+cat << EOF
+rule copy
+ command=cp \${in} \${out}
+
+EOF
+
+for res in ${other_res_files}; do
+	printf 'build %s: copy %s\n' "${res}" "${srcdir}/${res}";
+done
+printf '\n';
+
+cat << EOF
+rule resource
+ command = glib-compile-resources \${xml} --target=\${out} \$
+  --generate-source
+
+EOF
+
+for res in ${res_files}; do
+	printf "build %s: resource %s" "${res%.xml}.c" "${srcdir}/${res}";
+	for ui_file in ${ui_files}; do
+		printf ' %s' "${ui_file%.blp}.ui";
+	done
+	for res_file in ${other_res_files}; do
+		printf ' %s' "${res_file}";
+	done
+	printf '\n';
+	printf ' xml = %s\n' "${srcdir}/${res}";
+done
+printf '\n';
+
+#}}}
+
+# Regular old compiling {{{
+
+cat << EOF
+cflags = ${CFLAGS}
+ldflags = ${LDFLAGS}
+ldlibs = ${LDLIBS}
+cc = ${CC:-gcc}
+
+rule compile
+ deps = gcc
+ depfile = \${out}.d
+ command = \${cc} -MD -MF \${out}.d \${cflags} -c -o \${out} \${in}
+rule link
+ command = \${cc} \${ldflags} -o \${out} \${in} \${ldlibs}
+
+EOF
+
+for src in ${srcs}; do
+	printf 'build %s: compile %s\n' "${src%.c}.o" "${srcdir}/${src}";
+	case ${src} in
+		./src/thirdparty/*)
+			printf ' cflags = %s -I%s\n' \
+				"${CFLAGS}" "${srcdir}/inc/thirdparty";
+			;;
+		*) ;;
+	esac
+done
+
+for res in ${res_files}; do
+	printf 'build %s: compile %s\n' "${res%.xml}.o" "${res%.xml}.c";
+done
+
+printf 'build game: link'
+for src in ${srcs}; do
+	printf ' %s' "${src%.c}.o";
+done
+for src in ${ppsrcs}; do
+	printf ' %s' "${src%.cpp}.o";
+done
+for res in ${res_files}; do
+	printf ' %s' "${res%.xml}.o";
+done
+printf '\n\n';
+
+#}}}
+
+# Reconfiguring {{{
+
+cat << EOF
+rule configure
+ generator = 1
+ command = cd ${srcdir}; ./configure.sh ${ARGS}
+build build.ninja: configure ${srcdir}/configure.sh
+
+EOF
+#}}}
+
+cat << EOF
+default game
+EOF
+
+} > ${builddir}/build.ninja

inc/app.h

+#ifndef MODELLER_APP_H
+#define MODELLER_APP_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <adwaita.h>
+
+#define GAME_APP_TYPE ( game_app_get_type() )
+G_DECLARE_FINAL_TYPE(
+	GameApp, game_app, GAME, APP, AdwApplication );
+
+GameApp* game_app_new();
+void game_app_button_press( GameApp* app, int pin );
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

inc/pins.h

+#ifndef GAME_PINS_H
+#define GAME_PINS_H
+
+#define LED_R1 4
+#define LED_G1 25
+#define LED_R2 27
+#define LED_G2 23
+#define LED_R3 22
+#define LED_G3 24
+#define LED_R4 17
+#define LED_G4 26
+
+#define BUTTON_G1 5
+#define BUTTON_R1 6
+#define BUTTON_G2 13
+#define BUTTON_R2 19
+
+#endif

inc/window.h

+#ifndef GAME_WINDOW_H
+#define GAME_WINDOW_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "app.h"
+
+#include <gtk/gtk.h>
+
+#define GAME_WINDOW_TYPE ( game_window_get_type() )
+G_DECLARE_FINAL_TYPE( GameWindow,
+	game_window, GAME, WINDOW, GtkWindow );
+
+GameWindow* game_window_new( GameApp* app );
+void game_window_button_press( GameWindow* window, int pin );
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

res/game.gresource.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<gresources>
+	<gresource prefix="/xyz/tomg/game/">
+		<file preprocess="xml-stripblanks">res/window.ui</file>
+		<file preprocess="xml-stripblanks">res/logo.svg</file>
+	</gresource>
+</gresources>

res/logo.svg

+<?xml version="1.0" encoding="utf-8"?>
+<!-- Generator: Adobe Illustrator 26.0.2, SVG Export Plug-In . SVG Version: 6.00 Build 0)  -->
+<svg version="1.1" id="Artwork" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
+	 viewBox="0 0 1366 768" style="enable-background:new 0 0 1366 768;" xml:space="preserve">
+<style type="text/css">
+	.st0{fill:#FFFFFF;}
+</style>
+<g>
+	<g>
+		<path class="st0" d="M503.92,334.59c0,11.82-9.68,20.37-23.14,20.37c-13.38,0-23.14-8.55-23.14-20.37v-36.03l9.64,0v36.03
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+		<path class="st0" d="M334.57,314.47c0.4-0.19,0.83-0.33,1.28-0.4v-1.78c0-0.38,0.31-0.69,0.69-0.69c0.38,0,0.69,0.31,0.69,0.69
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+			c-2.34,0-4.25,1.91-4.25,4.25c0,1.27,0.46,1.94,0.48,1.96L334.57,314.47z"/>
+		<path class="st0" d="M324.21,320.11c-0.79,1.03-1.32,2.31-1.56,2.99c0.59,0.4,1.77,1.13,3.02,1.49c0.14-0.89,0.49-1.76,1.05-2.54
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+		<path class="st0" d="M333.03,318.56c0,1.93,1.57,3.51,3.51,3.51s3.51-1.57,3.51-3.51c0-1.93-1.57-3.51-3.51-3.51
+			S333.03,316.62,333.03,318.56z"/>
+		<path class="st0" d="M330.22,310.32c0.15,0.05,0.3,0.1,0.43,0.16c-0.01-0.15-0.02-0.3-0.02-0.46c0-0.97,0.23-1.88,0.65-2.69
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+	</g>
+</g>
+</svg>

res/window.blp

+using Gtk 4.0;
+
+template $GameWindow: Gtk.Window {
+
+	title: "Game";
+
+	width-request: 640;
+	height-request: 480;
+
+	realize => $realise();
+
+	Gtk.DrawingArea area {
+
+	}
+
+}

src/app.c

+#include "app.h"
+
+#include "pins.h"
+#include "window.h"
+
+/* TYPES!!! */
+
+struct _GameApp {
+
+	AdwApplication parent;
+
+	GameWindow* window;
+
+};
+
+G_DEFINE_TYPE( GameApp, game_app, ADW_TYPE_APPLICATION );
+
+/* PROTOTYPES!!! */
+
+static void game_app_class_init( GameAppClass* class );
+static void game_app_init( GameApp* app );
+static void activate( GApplication* app );
+
+/* PUBLIC FUNK!!! */
+
+GameApp* game_app_new() {
+
+	return g_object_new( GAME_APP_TYPE,
+		"application-id", "xyz.tomg.game", NULL );
+
+}
+
+void game_app_button_press( GameApp* app, int pin ) {
+
+	game_window_button_press( app->window, pin );
+
+}
+
+/* PRIVATE FUNK!!! */
+
+static void game_app_class_init( GameAppClass* class ) {
+
+	G_APPLICATION_CLASS( class )->activate = &activate;
+
+}
+
+static void game_app_init( GameApp* app ) {
+
+	(void) app;
+
+}
+
+static void activate( GApplication* app ) {
+
+	GameWindow* window = game_window_new( GAME_APP( app ) );
+	GAME_APP( app )->window = window;
+	gtk_window_present( GTK_WINDOW( window ) );
+
+}

src/main.c

+#include "app.h"
+
+#include "pins.h"
+
+#include <adwaita.h>
+#include <stdio.h>
+#include <wiringPi.h>
+
+/* BAD GLOBAL VARIABLES */
+
+static GameApp* app = NULL;
+
+/* PROTOTYPES!!! */
+
+static void isr_g1();
+static void isr_r1();
+static void isr_g2();
+static void isr_r2();
+
+/* PUBLIC FUNK!!! */
+
+int main( int argc, char** argv ) {
+
+	wiringPiSetupPinType( WPI_PIN_BCM );
+
+	pinMode( LED_G1, OUTPUT );
+	pinMode( LED_R1, OUTPUT );
+	pinMode( LED_G2, OUTPUT );
+	pinMode( LED_R2, OUTPUT );
+	pinMode( LED_G3, OUTPUT );
+	pinMode( LED_R3, OUTPUT );
+	pinMode( LED_G4, OUTPUT );
+	pinMode( LED_R4, OUTPUT );
+
+	digitalWrite( LED_G1, LOW );
+	digitalWrite( LED_R1, LOW );
+	digitalWrite( LED_G2, LOW );
+	digitalWrite( LED_R2, LOW );
+	digitalWrite( LED_G3, LOW );
+	digitalWrite( LED_R3, LOW );
+	digitalWrite( LED_G4, LOW );
+	digitalWrite( LED_R4, LOW );
+
+	pullUpDnControl( BUTTON_G1, PUD_UP );
+	pullUpDnControl( BUTTON_R1, PUD_UP );
+	pullUpDnControl( BUTTON_G2, PUD_UP );
+	pullUpDnControl( BUTTON_R2, PUD_UP );
+
+	wiringPiISR( BUTTON_G1, INT_EDGE_FALLING, &isr_g1 );
+	wiringPiISR( BUTTON_R1, INT_EDGE_FALLING, &isr_r1 );
+	wiringPiISR( BUTTON_G2, INT_EDGE_FALLING, &isr_g2 );
+	wiringPiISR( BUTTON_R2, INT_EDGE_FALLING, &isr_r2 );
+
+	app = game_app_new();
+	int ret = g_application_run( G_APPLICATION( app ), argc, argv );
+
+	digitalWrite( LED_G1, LOW );
+	digitalWrite( LED_R1, LOW );
+	digitalWrite( LED_G2, LOW );
+	digitalWrite( LED_R2, LOW );
+	digitalWrite( LED_G3, LOW );
+	digitalWrite( LED_R3, LOW );
+	digitalWrite( LED_G4, LOW );
+	digitalWrite( LED_R4, LOW );
+
+	return ret;
+
+}
+
+/* PRIVATE FUNK!!! */
+
+static int button_cb( void* pin ) {
+
+	game_app_button_press( app, *( (int*) pin ) );
+
+	return G_SOURCE_REMOVE;
+
+}
+
+static void isr_g1() {
+
+	static int pin = BUTTON_G1;
+	g_idle_add( &button_cb, &pin );
+
+}
+
+static void isr_r1() {
+
+	static int pin = BUTTON_R1;
+	g_idle_add( &button_cb, &pin );
+
+}
+
+static void isr_g2() {
+
+	static int pin = BUTTON_G2;
+	g_idle_add( &button_cb, &pin );
+
+}
+
+static void isr_r2() {
+
+	static int pin = BUTTON_R2;
+	g_idle_add( &button_cb, &pin );
+
+}

src/window.c

+#include "window.h"
+
+#include "pins.h"
+
+#include <assert.h>
+#include <librsvg/rsvg.h>
+#include <pango/pangocairo.h>
+#include <wiringPi.h>
+
+/* TYPES!!! */
+
+struct _GameWindow {
+
+	GtkWindow parent;
+
+	GtkDrawingArea* area;
+
+	RsvgHandle* logo;
+
+	enum {
+		SPLASH,
+		WAIT,
+		LIT,
+		DONE,
+	} state;
+
+	struct {
+		int team_1;
+		int team_2;
+	} score;
+
+	enum { RED, GREEN } colour;
+
+	bool g1_bouncing;
+	bool r1_bouncing;
+	bool g2_bouncing;
+	bool r2_bouncing;
+
+};
+
+G_DEFINE_TYPE(
+	GameWindow, game_window, GTK_TYPE_WINDOW );
+
+enum colour {
+	WHITE, UNIVERSITY_BLUE,
+};
+
+/* PROTOTYPES!!! */
+
+static void game_window_class_init( GameWindowClass* class );
+static void game_window_init( GameWindow* window );
+
+static void realise( GtkWidget* widget, void* data );
+
+static void draw( GtkDrawingArea* area, cairo_t* cr,
+	int width, int height, void* data );
+
+static void set_cario_colour( cairo_t* cr, enum colour colour );
+
+static int bounce_reset( void* data );
+static int light( void* data );
+
+/* PUBLIC FUNK!!! */
+
+GameWindow* game_window_new( GameApp* app ) {
+
+	return g_object_new( GAME_WINDOW_TYPE,
+		"application", app, NULL );
+
+}
+
+void game_window_button_press( GameWindow* window, int pin ) {
+
+	bool* bouncing = NULL;
+
+	switch ( pin ) {
+
+		case BUTTON_G1:
+			bouncing = &window->g1_bouncing;
+			break;
+
+		case BUTTON_R1:
+			bouncing = &window->r1_bouncing;
+			break;
+
+		case BUTTON_G2:
+			bouncing = &window->g2_bouncing;
+			break;
+
+		case BUTTON_R2:
+			bouncing = &window->r2_bouncing;
+			break;
+
+	}
+
+	assert( NULL != bouncing );
+
+	if ( *bouncing ) {
+		return;
+	}
+
+	fprintf( stderr, "Ping %d\n", pin );
+
+	*bouncing = true;
+
+	g_timeout_add( 200, bounce_reset, bouncing );
+
+	if ( !digitalRead( BUTTON_G1 ) && !digitalRead( BUTTON_R1 ) &&
+			!digitalRead( BUTTON_G2 ) && !digitalRead( BUTTON_R2 ) ) {
+
+		fprintf( stderr, "All pressed, reset\n" );
+
+		window->state = SPLASH;
+		window->score.team_1 = 0;
+		window->score.team_2 = 0;
+		gtk_widget_queue_draw( GTK_WIDGET( window->area ) );
+		return;
+
+	}
+
+	switch ( window->state ) {
+
+		case SPLASH: {
+
+			fprintf( stderr, "Splash -> wait\n" );
+
+			window->state = WAIT;
+			window->score.team_1 = 0;
+			window->score.team_2 = 0;
+			g_timeout_add( g_random_int_range( 1000, 5000 ),
+				light, window );
+			break;
+
+		}
+
+		case WAIT: {
+			break;
+		}
+
+		case LIT: {
+
+			switch ( pin ) {
+
+				case BUTTON_G1:
+				case BUTTON_R1: {
+
+					fprintf( stderr, "Team 1 press, " );
+					if ( ( GREEN == window->colour ) ==
+							( BUTTON_G1 == pin ) ) {
+						fprintf( stderr, "correct\n" );
+						window->score.team_1++;
+						digitalWrite( LED_G1, LOW );
+						digitalWrite( LED_R1, LOW );
+						digitalWrite( LED_G2, LOW );
+						digitalWrite( LED_R2, LOW );
+						digitalWrite( LED_G3, LOW );
+						digitalWrite( LED_R3, LOW );
+						digitalWrite( LED_G4, LOW );
+						digitalWrite( LED_R4, LOW );
+
+						window->state = WAIT;
+
+					} else {
+						fprintf( stderr, "wrong\n" );
+					}
+
+					break;
+
+				}
+
+				case BUTTON_G2:
+				case BUTTON_R2: {
+
+					fprintf( stderr, "Team 2 press, " );
+					if ( ( GREEN == window->colour ) ==
+							( BUTTON_G2 == pin ) ) {
+
+						fprintf( stderr, "correct\n" );
+						window->score.team_2++;
+						digitalWrite( LED_G1, LOW );
+						digitalWrite( LED_R1, LOW );
+						digitalWrite( LED_G2, LOW );
+						digitalWrite( LED_R2, LOW );
+						digitalWrite( LED_G3, LOW );
+						digitalWrite( LED_R3, LOW );
+						digitalWrite( LED_G4, LOW );
+						digitalWrite( LED_R4, LOW );
+
+						window->state = WAIT;
+
+					} else {
+						fprintf( stderr, "wrong\n" );
+					}
+
+					break;
+
+				}
+
+			}
+
+
+			if ( window->score.team_2 >= 10 ||
+					window->score.team_1 >= 10 ) {
+
+				window->state = DONE;
+
+			}
+
+			if ( window->state == WAIT ) {
+
+				g_timeout_add( g_random_int_range( 1000, 5000 ),
+					light, window );
+
+			}
+
+			break;
+
+		}
+
+		case DONE: {
+
+			break;
+
+		}
+
+	}
+
+	gtk_widget_queue_draw( GTK_WIDGET( window->area ) );
+
+}
+
+/* PRIVATE FUNK!!! */
+
+static void game_window_class_init( GameWindowClass* class ) {
+
+	gtk_widget_class_set_template_from_resource(
+		GTK_WIDGET_CLASS( class ), "/xyz/tomg/game/res/window.ui" );
+	gtk_widget_class_bind_template_child(
+		GTK_WIDGET_CLASS( class ), GameWindow, area );
+
+	gtk_widget_class_bind_template_callback_full(
+		GTK_WIDGET_CLASS( class ), "realise",
+		G_CALLBACK( &realise ) );
+
+}
+
+static void game_window_init( GameWindow* window ) {
+
+	gtk_widget_init_template( GTK_WIDGET( window ) );
+
+	GBytes* logo_svg = g_resources_lookup_data(
+		"/xyz/tomg/game/res/logo.svg", 0, NULL );
+	GError* error = NULL;
+	const char* data = g_bytes_get_data( logo_svg, NULL );
+	window->logo = rsvg_handle_new_from_data(
+		(const unsigned char*) data, strlen( data ), &error );
+	if ( NULL != error ) {
+		fprintf( stderr, "%s\n", error->message );
+	}
+	g_bytes_unref( logo_svg );
+
+	window->state = SPLASH;
+
+	gtk_drawing_area_set_draw_func(
+		window->area, &draw, (void*) window, NULL );
+
+	gtk_widget_set_cursor( GTK_WIDGET( window ),
+		gdk_cursor_new_from_name( "none", NULL ) );
+
+}
+
+static void realise( GtkWidget* widget, void* data ) {
+
+	gtk_window_fullscreen( GTK_WINDOW( widget ) );
+	(void) data;
+
+}
+
+static void draw( GtkDrawingArea* area, cairo_t* cr,
+		int width, int height, void* data ) {
+
+	(void) area;
+	GameWindow* window = (GameWindow*) data;
+
+	set_cario_colour( cr, UNIVERSITY_BLUE );
+	cairo_paint( cr );
+
+	PangoFontDescription* desc = pango_font_description_new();
+	pango_font_description_set_family( desc, "Roboto" );
+	pango_font_description_set_absolute_size( desc, PANGO_SCALE * (
+		0.8 * height < 0.66 * width ? 0.8 * height : 0.66 * width ) );
+
+	switch ( window->state ) {
+
+		case SPLASH: {
+
+			rsvg_handle_render_document( window->logo,
+				cr, &(RsvgRectangle) { 0, 0, width, height, }, NULL );
+			break;
+
+		}
+
+		case WAIT:
+		case LIT: {
+
+			char buffer[5];
+			snprintf( buffer, sizeof buffer,
+				"%d", window->score.team_1 );
+
+			int lw, lh;
+
+			PangoLayout* layout = pango_cairo_create_layout( cr );
+			pango_layout_set_font_description( layout, desc );
+
+			pango_layout_set_text( layout, buffer, -1 );
+			pango_layout_get_pixel_size( layout, &lw, &lh );
+			fprintf( stderr, "Layout %s size %d, %d\n", buffer, lw, lh );
+
+			cairo_move_to( cr, 0.25 * width - lw / 2.,
+				0.5 * height - lh / 2. );
+			set_cario_colour( cr, WHITE );
+			pango_cairo_show_layout( cr, layout );
+
+			snprintf( buffer, sizeof buffer,
+				"%d", window->score.team_2 );
+
+			pango_layout_set_text( layout, buffer, -1 );
+			pango_layout_get_pixel_size( layout, &lw, &lh );
+
+			cairo_move_to( cr, 0.75 * width - lw / 2.,
+				0.5 * height - lh / 2. );
+			set_cario_colour( cr, WHITE );
+			pango_cairo_show_layout( cr, layout );
+
+			g_object_unref( G_OBJECT( layout ) );
+
+			rsvg_handle_render_document( window->logo, cr,
+				&(RsvgRectangle) {
+					0.4 * width, 0.8 * height,
+					0.2 * width, 0.2 * height,
+				}, NULL );
+
+			break;
+
+		}
+
+		case DONE: {
+
+			pango_font_description_set_absolute_size( desc,
+				PANGO_SCALE * ( 0.4 * height < 0.33 * width ?
+					0.2 * height : 0.16 * width ) );
+
+			PangoLayout* layout = pango_cairo_create_layout( cr );
+			pango_layout_set_font_description( layout, desc );
+
+			pango_layout_set_text( layout,
+				window->score.team_1 >= window->score.team_2 ?
+					"Team 1 Wins!" : "Team 2 Wins!", -1 );
+			pango_layout_set_width( layout, PANGO_SCALE* 0.8 * width );
+			//pango_layout_set_alignment( layout, PANGO_ALIGN_CENTER );
+
+			int lw, lh;
+			pango_layout_get_pixel_size( layout, &lw, &lh );
+
+			cairo_move_to( cr, 0.5 * width - lw / 2,
+				0.5 * height - lh / 2 );
+			set_cario_colour( cr, WHITE );
+			pango_cairo_show_layout( cr, layout );
+
+			break;
+
+		}
+
+	}
+
+	pango_font_description_free( desc );
+
+}
+
+static void set_cario_colour( cairo_t* cr, enum colour colour ) {
+
+	switch ( colour ) {
+
+		case WHITE:
+			cairo_set_source_rgba( cr, 1., 1., 1., 1. );
+			break;
+
+		case UNIVERSITY_BLUE:
+			cairo_set_source_rgba(
+				cr, 0, 0x5C / 255., 0x84 / 255., 1. );
+			break;
+
+	}
+
+}
+
+static int bounce_reset( void* data ) {
+
+	*( (bool*) data ) = false;
+
+	return G_SOURCE_REMOVE;
+
+}
+
+static int light( void* data ) {
+
+	GameWindow* window = (GameWindow*) data;
+
+	if ( WAIT != window->state ) {
+		return G_SOURCE_REMOVE;
+	}
+
+	static const int leds[] = {
+		LED_G1, LED_G2, LED_G3, LED_G4,
+		LED_R1, LED_R2, LED_R3, LED_R4,
+	};
+
+	int led = g_random_int_range( 0, sizeof leds / sizeof *leds );
+	fprintf( stderr, "Lighting led %d (pin %d)\n",
+		led, leds[led] );
+	for ( int i = 0; i < 8; i++ ) {
+		digitalWrite( leds[i], i == led ? HIGH : LOW );
+	}
+
+	window->state = LIT;
+	window->colour = led < 4 ? GREEN : RED;
+
+	return G_SOURCE_REMOVE;
+
+}