From b6e7e454ed6242475163dcd534051897d3c9158c Mon Sep 17 00:00:00 2001
From: lamp
Date: Sun, 5 Mar 2023 21:25:03 +0000
Subject: init

---
 .clang-format                       | 149 +++++++++++++++++
 .gitignore                          |   2 +
 LICENSE                             |  13 ++
 README.md                           |   5 +
 build.sh                            |  12 ++
 format.sh                           |  84 ++++++++++
 include/backgrounds/background.h    |  32 ++++
 include/backgrounds/game_over.h     |  32 ++++
 include/backgrounds/game_over_map.h |  30 ++++
 include/backgrounds/map.h           |  29 ++++
 include/backgrounds/numerals.h      |  34 ++++
 include/defines.h                   |  23 +++
 include/metasprite.h                |  27 ++++
 include/pipe.h                      |  33 ++++
 include/sprites/bird.h              |  32 ++++
 include/sprites/button.h            |  32 ++++
 include/sprites/pipe.h              |  32 ++++
 res/bg.gbm                          | Bin 0 -> 6339 bytes
 res/bg.gbr                          | Bin 0 -> 10069 bytes
 res/bird.gbr                        | Bin 0 -> 10347 bytes
 res/button.gbr                      | Bin 0 -> 9301 bytes
 res/game_over.gbm                   | Bin 0 -> 1526 bytes
 res/game_over.gbr                   | Bin 0 -> 10069 bytes
 res/numerals.gbr                    | Bin 0 -> 10069 bytes
 res/pipe.gbr                        | Bin 0 -> 10069 bytes
 src/backgrounds/background.c        |  42 +++++
 src/backgrounds/game_over.c         |  44 +++++
 src/backgrounds/game_over_map.c     |  63 ++++++++
 src/backgrounds/map.c               |  75 +++++++++
 src/backgrounds/numerals.c          |  65 ++++++++
 src/main.c                          | 312 ++++++++++++++++++++++++++++++++++++
 src/metasprite.c                    |  52 ++++++
 src/pipe.c                          |  84 ++++++++++
 src/sprites/bird.c                  |  39 +++++
 src/sprites/button.c                |  39 +++++
 src/sprites/pipe.c                  |  34 ++++
 36 files changed, 1450 insertions(+)
 create mode 100644 .clang-format
 create mode 100644 .gitignore
 create mode 100644 LICENSE
 create mode 100644 README.md
 create mode 100755 build.sh
 create mode 100755 format.sh
 create mode 100644 include/backgrounds/background.h
 create mode 100644 include/backgrounds/game_over.h
 create mode 100644 include/backgrounds/game_over_map.h
 create mode 100644 include/backgrounds/map.h
 create mode 100644 include/backgrounds/numerals.h
 create mode 100644 include/defines.h
 create mode 100644 include/metasprite.h
 create mode 100644 include/pipe.h
 create mode 100644 include/sprites/bird.h
 create mode 100644 include/sprites/button.h
 create mode 100644 include/sprites/pipe.h
 create mode 100644 res/bg.gbm
 create mode 100644 res/bg.gbr
 create mode 100644 res/bird.gbr
 create mode 100644 res/button.gbr
 create mode 100644 res/game_over.gbm
 create mode 100644 res/game_over.gbr
 create mode 100644 res/numerals.gbr
 create mode 100644 res/pipe.gbr
 create mode 100644 src/backgrounds/background.c
 create mode 100644 src/backgrounds/game_over.c
 create mode 100644 src/backgrounds/game_over_map.c
 create mode 100644 src/backgrounds/map.c
 create mode 100644 src/backgrounds/numerals.c
 create mode 100644 src/main.c
 create mode 100644 src/metasprite.c
 create mode 100644 src/pipe.c
 create mode 100644 src/sprites/bird.c
 create mode 100644 src/sprites/button.c
 create mode 100644 src/sprites/pipe.c

diff --git a/.clang-format b/.clang-format
new file mode 100644
index 0000000..03ce0b4
--- /dev/null
+++ b/.clang-format
@@ -0,0 +1,149 @@
+---
+Language:        Cpp
+# BasedOnStyle:  LLVM
+AccessModifierOffset: -2
+AlignAfterOpenBracket: Align
+AlignConsecutiveMacros: false
+AlignConsecutiveAssignments: false
+AlignConsecutiveBitFields: false
+AlignConsecutiveDeclarations: false
+AlignEscapedNewlines: Right
+AlignOperands:   Align
+AlignTrailingComments: true
+AllowAllArgumentsOnNextLine: true
+AllowAllConstructorInitializersOnNextLine: true
+AllowAllParametersOfDeclarationOnNextLine: true
+AllowShortEnumsOnASingleLine: true
+AllowShortBlocksOnASingleLine: Never
+AllowShortCaseLabelsOnASingleLine: false
+AllowShortFunctionsOnASingleLine: All
+AllowShortLambdasOnASingleLine: All
+AllowShortIfStatementsOnASingleLine: Never
+AllowShortLoopsOnASingleLine: false
+AlwaysBreakAfterDefinitionReturnType: None
+AlwaysBreakAfterReturnType: None
+AlwaysBreakBeforeMultilineStrings: false
+AlwaysBreakTemplateDeclarations: MultiLine
+BinPackArguments: true
+BinPackParameters: true
+BraceWrapping:
+  AfterCaseLabel:  false
+  AfterClass:      false
+  AfterControlStatement: Never
+  AfterEnum:       false
+  AfterFunction:   false
+  AfterNamespace:  false
+  AfterObjCDeclaration: false
+  AfterStruct:     false
+  AfterUnion:      false
+  AfterExternBlock: false
+  BeforeCatch:     false
+  BeforeElse:      false
+  BeforeLambdaBody: false
+  BeforeWhile:     false
+  IndentBraces:    false
+  SplitEmptyFunction: true
+  SplitEmptyRecord: true
+  SplitEmptyNamespace: true
+BreakBeforeBinaryOperators: None
+BreakBeforeBraces: Attach
+BreakBeforeInheritanceComma: false
+BreakInheritanceList: BeforeColon
+BreakBeforeTernaryOperators: true
+BreakConstructorInitializersBeforeComma: false
+BreakConstructorInitializers: BeforeColon
+BreakAfterJavaFieldAnnotations: false
+BreakStringLiterals: true
+ColumnLimit:     80
+CommentPragmas:  '^ IWYU pragma:'
+CompactNamespaces: false
+ConstructorInitializerAllOnOneLineOrOnePerLine: false
+ConstructorInitializerIndentWidth: 4
+ContinuationIndentWidth: 4
+Cpp11BracedListStyle: true
+DeriveLineEnding: true
+DerivePointerAlignment: false
+DisableFormat:   false
+ExperimentalAutoDetectBinPacking: false
+FixNamespaceComments: true
+ForEachMacros:
+  - foreach
+  - Q_FOREACH
+  - BOOST_FOREACH
+IncludeBlocks:   Preserve
+IncludeCategories:
+  - Regex:           '^"(llvm|llvm-c|clang|clang-c)/'
+    Priority:        2
+    SortPriority:    0
+  - Regex:           '^(<|"(gtest|gmock|isl|json)/)'
+    Priority:        3
+    SortPriority:    0
+  - Regex:           '.*'
+    Priority:        1
+    SortPriority:    0
+IncludeIsMainRegex: '(Test)?$'
+IncludeIsMainSourceRegex: ''
+IndentCaseLabels: false
+IndentCaseBlocks: false
+IndentGotoLabels: true
+IndentPPDirectives: None
+IndentExternBlock: AfterExternBlock
+IndentWidth:     2
+IndentWrappedFunctionNames: false
+InsertTrailingCommas: None
+JavaScriptQuotes: Leave
+JavaScriptWrapImports: true
+KeepEmptyLinesAtTheStartOfBlocks: true
+MacroBlockBegin: ''
+MacroBlockEnd:   ''
+MaxEmptyLinesToKeep: 1
+NamespaceIndentation: None
+ObjCBinPackProtocolList: Auto
+ObjCBlockIndentWidth: 2
+ObjCBreakBeforeNestedBlockParam: true
+ObjCSpaceAfterProperty: false
+ObjCSpaceBeforeProtocolList: true
+PenaltyBreakAssignment: 2
+PenaltyBreakBeforeFirstCallParameter: 19
+PenaltyBreakComment: 300
+PenaltyBreakFirstLessLess: 120
+PenaltyBreakString: 1000
+PenaltyBreakTemplateDeclaration: 10
+PenaltyExcessCharacter: 1000000
+PenaltyReturnTypeOnItsOwnLine: 60
+PointerAlignment: Right
+ReflowComments:  true
+SortIncludes:    true
+SortUsingDeclarations: true
+SpaceAfterCStyleCast: false
+SpaceAfterLogicalNot: false
+SpaceAfterTemplateKeyword: true
+SpaceBeforeAssignmentOperators: true
+SpaceBeforeCpp11BracedList: false
+SpaceBeforeCtorInitializerColon: true
+SpaceBeforeInheritanceColon: true
+SpaceBeforeParens: ControlStatements
+SpaceBeforeRangeBasedForLoopColon: true
+SpaceInEmptyBlock: false
+SpaceInEmptyParentheses: false
+SpacesBeforeTrailingComments: 1
+SpacesInAngles:  false
+SpacesInConditionalStatement: false
+SpacesInContainerLiterals: true
+SpacesInCStyleCastParentheses: false
+SpacesInParentheses: false
+SpacesInSquareBrackets: false
+SpaceBeforeSquareBrackets: false
+Standard:        Latest
+StatementMacros:
+  - Q_UNUSED
+  - QT_REQUIRE_VERSION
+TabWidth:        8
+UseCRLF:         false
+UseTab:          Never
+WhitespaceSensitiveMacros:
+  - STRINGIZE
+  - PP_STRINGIZE
+  - BOOST_PP_STRINGIZE
+...
+
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..fcb2462
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+compile_flags.txt
+out.gb
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..5c93f45
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,13 @@
+            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
+                    Version 2, December 2004
+
+ Copyright (C) 2004 Sam Hocevar <sam@hocevar.net>
+
+ Everyone is permitted to copy and distribute verbatim or modified
+ copies of this license document, and changing it is allowed as long
+ as the name is changed.
+
+            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
+   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+  0. You just DO WHAT THE FUCK YOU WANT TO.
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..fe6d268
--- /dev/null
+++ b/README.md
@@ -0,0 +1,5 @@
+# flappy-gb
+
+A simple flappy bird clone for the Gameboy, written in C using the [GBDK](https://github.com/gbdk-2020/gbdk-2020).
+To compile, run `build.sh`. Alternatively, a build is available in the releases section.
+Thanks to GamingMonsters for their [tutorials](https://www.youtube.com/playlist?list=PLeEj4c2zF7PaFv5MPYhNAkBGrkx4iPGJo), the excellent [GBDK documentation](https://bbbbbr.github.io/gbdk-2020/docs/api/index.html), and the [Pandocs](https://gbdev.io/pandocs/).
diff --git a/build.sh b/build.sh
new file mode 100755
index 0000000..1f56aec
--- /dev/null
+++ b/build.sh
@@ -0,0 +1,12 @@
+#!/bin/bash
+
+shopt -s globstar
+
+CC="lcc"
+OUT_NAME="out.gb"
+
+if $CC -o "$OUT_NAME" -Iinclude src/**/*.c; then
+    echo "Emitted: $OUT_NAME"
+else
+    echo "Build Failed"
+fi
diff --git a/format.sh b/format.sh
new file mode 100755
index 0000000..645c3ce
--- /dev/null
+++ b/format.sh
@@ -0,0 +1,84 @@
+#!/bin/bash
+#
+# clang-format-all: a tool to run clang-format on an entire project
+# Copyright (C) 2016 Evan Klitzke <evan@eklitzke.org>
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+function usage {
+    echo "Usage: $0 DIR..."
+    exit 1
+}
+
+if [ $# -eq 0 ]; then
+    usage
+fi
+
+# Variable that will hold the name of the clang-format command
+FMT=""
+
+# Some distros just call it clang-format. Others (e.g. Ubuntu) are insistent
+# that the version number be part of the command. We prefer clang-format if
+# that's present, otherwise we work backwards from highest version to lowest
+# version.
+for clangfmt in clang-format{,-{4,3}.{9,8,7,6,5,4,3,2,1,0}}; do
+    if which "$clangfmt" &>/dev/null; then
+        FMT="$clangfmt"
+        break
+    fi
+done
+
+# Check if we found a working clang-format
+if [ -z "$FMT" ]; then
+    echo "failed to find clang-format"
+    exit 1
+fi
+
+# Check all of the arguments first to make sure they're all directories
+for dir in "$@"; do
+    if [ ! -d "${dir}" ]; then
+        echo "${dir} is not a directory"
+        usage
+    fi
+done
+
+# Find a dominating file, starting from a given directory and going up.
+find-dominating-file() {
+    if [ -r "$1"/"$2" ]; then
+        return 0
+    fi
+    if [ "$1" = "/" ]; then
+        return 1
+    fi
+    find-dominating-file "$(realpath "$1"/..)" "$2"
+    return $?
+}
+
+# Run clang-format -i on all of the things
+for dir in "$@"; do
+    pushd "${dir}" &>/dev/null
+    if ! find-dominating-file . .clang-format; then
+        echo "Failed to find dominating .clang-format starting at $PWD"
+        continue
+    fi
+    find . \
+         \( -name '*.c' \
+         -o -name '*.cc' \
+         -o -name '*.cpp' \
+         -o -name '*.h' \
+         -o -name '*.hh' \
+         -o -name '*.hpp' \) \
+         -exec "${FMT}" -i '{}' \;
+    popd &>/dev/null
+done
diff --git a/include/backgrounds/background.h b/include/backgrounds/background.h
new file mode 100644
index 0000000..d9385be
--- /dev/null
+++ b/include/backgrounds/background.h
@@ -0,0 +1,32 @@
+/*
+
+ EXPORT.H
+
+ Include File.
+
+ Info:
+  Form                 : All tiles as one unit.
+  Format               : Gameboy 4 color.
+  Compression          : None.
+  Counter              : None.
+  Tile size            : 8 x 8
+  Tiles                : 0 to 8
+
+  Palette colors       : None.
+  SGB Palette          : None.
+  CGB Palette          : None.
+
+  Convert to metatiles : No.
+
+ This file was generated by GBTD v2.2
+
+*/
+
+#pragma once
+
+/* Bank of tiles. */
+#define BG_TILE_DATABank 0
+/* Start of tile array. */
+extern const unsigned char BG_TILE_DATA[];
+
+/* End of EXPORT.H */
diff --git a/include/backgrounds/game_over.h b/include/backgrounds/game_over.h
new file mode 100644
index 0000000..19a1c1a
--- /dev/null
+++ b/include/backgrounds/game_over.h
@@ -0,0 +1,32 @@
+/*
+
+ EXPORT.H
+
+ Include File.
+
+ Info:
+  Form                 : All tiles as one unit.
+  Format               : Gameboy 4 color.
+  Compression          : None.
+  Counter              : None.
+  Tile size            : 8 x 8
+  Tiles                : 0 to 10
+
+  Palette colors       : None.
+  SGB Palette          : None.
+  CGB Palette          : None.
+
+  Convert to metatiles : No.
+
+ This file was generated by GBTD v2.2
+
+*/
+
+#pragma once
+
+/* Bank of tiles. */
+#define GAME_OVER_TILE_DATABank 0
+/* Start of tile array. */
+extern const unsigned char GAME_OVER_TILE_DATA[];
+
+/* End of EXPORT.H */
diff --git a/include/backgrounds/game_over_map.h b/include/backgrounds/game_over_map.h
new file mode 100644
index 0000000..6e861f8
--- /dev/null
+++ b/include/backgrounds/game_over_map.h
@@ -0,0 +1,30 @@
+/*
+
+ GAME_OVER_MAP.H
+
+ Map Include File.
+
+ Info:
+   Section       :
+   Bank          : 0
+   Map size      : 10 x 7
+   Tile set      :
+ Z:\var\home\matthew\Documents\Projects\flappy-gb\res\game_over.gbr Plane count
+ : 1 plane (8 bits) Plane order   : Tiles are continues Tile offset   : 0 Split
+ data    : No
+
+ This file was generated by GBMB v1.8
+
+*/
+
+#pragma once
+
+#include "defines.h"
+
+#define GAME_OVER_MAPWidth 10
+#define GAME_OVER_MAPHeight 7
+#define GAME_OVER_MAPBank 0
+
+extern const unsigned char GAME_OVER_MAP[];
+
+/* End of GAME_OVER_MAP.H */
diff --git a/include/backgrounds/map.h b/include/backgrounds/map.h
new file mode 100644
index 0000000..03c1eb5
--- /dev/null
+++ b/include/backgrounds/map.h
@@ -0,0 +1,29 @@
+/*
+
+ MAP.H
+
+ Map Include File.
+
+ Info:
+   Section       :
+   Bank          : 0
+   Map size      : 31 x 17
+   Tile set      : Z:\var\home\matthew\Documents\Projects\flappy-gb\res\bg.gbr
+   Plane count   : 1 plane (8 bits)
+   Plane order   : Tiles are continues
+   Tile offset   : 0
+   Split data    : No
+
+ This file was generated by GBMB v1.8
+
+*/
+
+#pragma once
+
+#define BG_TILE_MAPWidth 32
+#define BG_TILE_MAPHeight 18
+#define BG_TILE_MAPBank 0
+
+extern const unsigned char BG_TILE_MAP[];
+
+/* End of MAP.H */
diff --git a/include/backgrounds/numerals.h b/include/backgrounds/numerals.h
new file mode 100644
index 0000000..f171edd
--- /dev/null
+++ b/include/backgrounds/numerals.h
@@ -0,0 +1,34 @@
+/*
+
+ EXPORT.H
+
+ Include File.
+
+ Info:
+  Form                 : All tiles as one unit.
+  Format               : Gameboy 4 color.
+  Compression          : None.
+  Counter              : None.
+  Tile size            : 8 x 8
+  Tiles                : 0 to 10
+
+  Palette colors       : None.
+  SGB Palette          : None.
+  CGB Palette          : None.
+
+  Convert to metatiles : No.
+
+ This file was generated by GBTD v2.2
+
+*/
+
+#pragma once
+#include "defines.h"
+
+/* Bank of tiles. */
+#define NUMERALS_TILE_DATABank 0
+/* Start of tile array. */
+extern const unsigned char NUMERALS_TILE_DATA[];
+extern const unsigned char NUMERALS_TILE_MAP[];
+extern const unsigned char NUMERALS_TILE_CLEAR[];
+/* End of EXPORT.H */
diff --git a/include/defines.h b/include/defines.h
new file mode 100644
index 0000000..765ecde
--- /dev/null
+++ b/include/defines.h
@@ -0,0 +1,23 @@
+#pragma once
+#include <gb/gb.h>
+
+#define TILE_SIZE 8
+#define GRAVITY_ACCELERATION 1
+#define APPLY_GRAVITY_N_FRAMES 4
+#define CYCLE_ANIMATION_N_FRAMES 8
+#define JUMP_VELOCITY -4
+#define BACKGROUND_SCROLL_SPEED 1
+#define FOREGROUND_SCROLL_SPEED 2
+#define PIPE_TILE_START 9
+#define NUMERALS_TILE_START 10
+#define BLANK_NUMERAL_TILE 20
+#define PIPE_WIDTH 24
+#define BUTTON_TILE_START 14
+#define CYCLE_BUTTON_N_FRAMES 16
+#define WINDOW_CENTERING_OFFSET 23
+#define GAME_OVER_TILE_START 21
+
+#define BIRD_WIDTH 16
+#define BIRD_HEIGHT 12
+
+typedef INT8 ScreenCoordinate;
diff --git a/include/metasprite.h b/include/metasprite.h
new file mode 100644
index 0000000..f4a15e7
--- /dev/null
+++ b/include/metasprite.h
@@ -0,0 +1,27 @@
+#pragma once
+#include <gb/gb.h>
+
+#include "defines.h"
+
+typedef struct Metasprite {
+  ScreenCoordinate x;
+  ScreenCoordinate y;
+  UINT8 width;
+  UINT8 height;
+  INT8 velocity_x;
+  INT8 velocity_y;
+  UINT8 sprite_ids[4]; // A metasprite is four sprites.
+  UINT8 tile_ids[4];   // A metasprite is four sprites.
+} Metasprite;
+
+inline void metasprite_init(Metasprite *metasprite);
+inline void metasprite_move_to(Metasprite *metasprite, ScreenCoordinate new_x,
+                               ScreenCoordinate new_y);
+inline void metasprite_move_offset(Metasprite *metasprite,
+                                   ScreenCoordinate offset_x,
+                                   ScreenCoordinate offset_y);
+inline void metasprite_apply_gravity(Metasprite *metasprite);
+inline void metasprite_update_position_using_velocity(Metasprite *metasprite);
+inline void metasprite_jump(Metasprite *metasprite);
+inline void metasprite_update_tiles(Metasprite *metasprite);
+inline void metasprite_hide(Metasprite *metasprite);
diff --git a/include/pipe.h b/include/pipe.h
new file mode 100644
index 0000000..2602614
--- /dev/null
+++ b/include/pipe.h
@@ -0,0 +1,33 @@
+#pragma once
+#include <gb/gb.h>
+#include <stdbool.h>
+
+#include "defines.h"
+
+enum SPECIAL_SPRITES {
+  PIPE_TILE_TOP_LEFT,
+  PIPE_TILE_TOP_MIDDLE,
+  PIPE_TILE_TOP_RIGHT,
+  PIPE_TILE_BOTTOM_LEFT,
+  PIPE_TILE_BOTTOM_MIDDLE,
+  PIPE_TILE_BOTTOM_RIGHT,
+};
+
+enum PIPE_TILES {
+  CAP_LEFT,
+  CAP_MIDDLE,
+  MAIN_LEFT,
+  MAIN_MIDDLE,
+};
+
+typedef struct Pipe {
+  UINT8 x;
+  UINT8 height_of_gap;
+  UINT8 gap_skip;
+  UINT8 sprite_ids[36]; // 15 high, minus 3 tile gap, times 3 wide = 36
+} Pipe;
+
+inline void pipe_init(Pipe *pipe);
+inline void pipe_scroll_horizontal(Pipe *pipe, ScreenCoordinate x);
+inline void pipe_move_gap_height(Pipe *pipe, UINT8 gap_height);
+inline void pipe_hide(Pipe *pipe);
diff --git a/include/sprites/bird.h b/include/sprites/bird.h
new file mode 100644
index 0000000..1964266
--- /dev/null
+++ b/include/sprites/bird.h
@@ -0,0 +1,32 @@
+/*
+
+ BIRD.H
+
+ Include File.
+
+ Info:
+  Form                 : All tiles as one unit.
+  Format               : Gameboy 4 color.
+  Compression          : None.
+  Counter              : None.
+  Tile size            : 8 x 8
+  Tiles                : 0 to 3
+
+  Palette colors       : None.
+  SGB Palette          : None.
+  CGB Palette          : None.
+
+  Convert to metatiles : No.
+
+ This file was generated by GBTD v2.2
+
+*/
+#pragma once
+
+/* Bank of tiles. */
+#define TileLabelBank 0
+
+/* Start of tile array. */
+extern const unsigned char BIRD_TILE_DATA[];
+
+/* End of BIRD.H */
diff --git a/include/sprites/button.h b/include/sprites/button.h
new file mode 100644
index 0000000..74650c4
--- /dev/null
+++ b/include/sprites/button.h
@@ -0,0 +1,32 @@
+/*
+
+ EXPORT.H
+
+ Include File.
+
+ Info:
+  Form                 : All tiles as one unit.
+  Format               : Gameboy 4 color.
+  Compression          : None.
+  Counter              : None.
+  Tile size            : 8 x 8
+  Tiles                : 0 to 7
+
+  Palette colors       : None.
+  SGB Palette          : None.
+  CGB Palette          : None.
+
+  Convert to metatiles : No.
+
+ This file was generated by GBTD v2.2
+
+*/
+
+#pragma once
+
+/* Bank of tiles. */
+#define BUTTON_TILE_DATABank 0
+/* Start of tile array. */
+extern const unsigned char BUTTON_TILE_DATA[];
+
+/* End of EXPORT.H */
diff --git a/include/sprites/pipe.h b/include/sprites/pipe.h
new file mode 100644
index 0000000..30ea5a0
--- /dev/null
+++ b/include/sprites/pipe.h
@@ -0,0 +1,32 @@
+/*
+
+ EXPORT.H
+
+ Include File.
+
+ Info:
+  Form                 : All tiles as one unit.
+  Format               : Gameboy 4 color.
+  Compression          : None.
+  Counter              : None.
+  Tile size            : 8 x 8
+  Tiles                : 0 to 0
+
+  Palette colors       : None.
+  SGB Palette          : None.
+  CGB Palette          : None.
+
+  Convert to metatiles : No.
+
+ This file was generated by GBTD v2.2
+
+*/
+
+#pragma once
+
+/* Bank of tiles. */
+#define PIPE_TILE_DATABank 0
+/* Start of tile array. */
+extern const unsigned char PIPE_TILE_DATA[];
+
+/* End of EXPORT.H */
diff --git a/res/bg.gbm b/res/bg.gbm
new file mode 100644
index 0000000..0c51d5c
Binary files /dev/null and b/res/bg.gbm differ
diff --git a/res/bg.gbr b/res/bg.gbr
new file mode 100644
index 0000000..a22cd84
Binary files /dev/null and b/res/bg.gbr differ
diff --git a/res/bird.gbr b/res/bird.gbr
new file mode 100644
index 0000000..7a7e5b8
Binary files /dev/null and b/res/bird.gbr differ
diff --git a/res/button.gbr b/res/button.gbr
new file mode 100644
index 0000000..a87d1ef
Binary files /dev/null and b/res/button.gbr differ
diff --git a/res/game_over.gbm b/res/game_over.gbm
new file mode 100644
index 0000000..26178b7
Binary files /dev/null and b/res/game_over.gbm differ
diff --git a/res/game_over.gbr b/res/game_over.gbr
new file mode 100644
index 0000000..8afd5f9
Binary files /dev/null and b/res/game_over.gbr differ
diff --git a/res/numerals.gbr b/res/numerals.gbr
new file mode 100644
index 0000000..281e9d7
Binary files /dev/null and b/res/numerals.gbr differ
diff --git a/res/pipe.gbr b/res/pipe.gbr
new file mode 100644
index 0000000..a990378
Binary files /dev/null and b/res/pipe.gbr differ
diff --git a/src/backgrounds/background.c b/src/backgrounds/background.c
new file mode 100644
index 0000000..35bb0ea
--- /dev/null
+++ b/src/backgrounds/background.c
@@ -0,0 +1,42 @@
+/*
+
+ EXPORT.C
+
+ Tile Source File.
+
+ Info:
+  Form                 : All tiles as one unit.
+  Format               : Gameboy 4 color.
+  Compression          : None.
+  Counter              : None.
+  Tile size            : 8 x 8
+  Tiles                : 0 to 8
+
+  Palette colors       : None.
+  SGB Palette          : None.
+  CGB Palette          : None.
+
+  Convert to metatiles : No.
+
+ This file was generated by GBTD v2.2
+
+*/
+
+/* Start of tile array. */
+const unsigned char BG_TILE_DATA[] = {
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0x00, 0x00, 0xF8, 0x07, 0xF1, 0x0E,
+    0xE3, 0x1C, 0xC7, 0x38, 0x8F, 0x70, 0x1F, 0xE0, 0xFF, 0xFF, 0x00, 0xFF,
+    0xFF, 0x00, 0xFF, 0x00, 0xFF, 0x00, 0xFF, 0x00, 0xFF, 0x00, 0xFF, 0x00,
+    0xFF, 0x00, 0xFF, 0x00, 0xFF, 0x00, 0xFF, 0x00, 0xFF, 0x00, 0xFF, 0x00,
+    0xFF, 0x00, 0xFF, 0x00, 0xFF, 0x00, 0x3F, 0xC0, 0xCF, 0x30, 0xF7, 0x08,
+    0xF6, 0x09, 0xF9, 0x06, 0xFB, 0x04, 0xFF, 0x00, 0x7F, 0x80, 0xBC, 0x43,
+    0xB3, 0x4C, 0x87, 0x78, 0x79, 0x86, 0xFE, 0x01, 0xFF, 0x00, 0xFF, 0x00,
+    0x00, 0x99, 0x18, 0xE7, 0xFF, 0x00, 0xFF, 0x00, 0xFF, 0x00, 0x7F, 0x80,
+    0xBF, 0x40, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x70, 0x70, 0x8F, 0xFC, 0x03, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xF0, 0xF0, 0x0C, 0xFC, 0x03,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x01};
+
+/* End of EXPORT.C */
diff --git a/src/backgrounds/game_over.c b/src/backgrounds/game_over.c
new file mode 100644
index 0000000..b1ddac3
--- /dev/null
+++ b/src/backgrounds/game_over.c
@@ -0,0 +1,44 @@
+/*
+
+ EXPORT.C
+
+ Tile Source File.
+
+ Info:
+  Form                 : All tiles as one unit.
+  Format               : Gameboy 4 color.
+  Compression          : None.
+  Counter              : None.
+  Tile size            : 8 x 8
+  Tiles                : 0 to 10
+
+  Palette colors       : None.
+  SGB Palette          : None.
+  CGB Palette          : None.
+
+  Convert to metatiles : No.
+
+ This file was generated by GBTD v2.2
+
+*/
+
+/* Start of tile array. */
+const unsigned char GAME_OVER_TILE_DATA[] = {
+    0x7E, 0x7E, 0x7E, 0x7E, 0x60, 0x60, 0x6E, 0x6E, 0x6E, 0x6E, 0x62, 0x62,
+    0x7E, 0x7E, 0x7E, 0x7E, 0x18, 0x18, 0x3C, 0x3C, 0x66, 0x66, 0x66, 0x66,
+    0x7E, 0x7E, 0x7E, 0x7E, 0x66, 0x66, 0x66, 0x66, 0x7F, 0x7F, 0x7F, 0x7F,
+    0x6B, 0x6B, 0x6B, 0x6B, 0x6B, 0x6B, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
+    0x7E, 0x7E, 0x7E, 0x7E, 0x60, 0x60, 0x7E, 0x7E, 0x7E, 0x7E, 0x60, 0x60,
+    0x7E, 0x7E, 0x7E, 0x7E, 0x7E, 0x7E, 0x7E, 0x7E, 0x66, 0x66, 0x66, 0x66,
+    0x66, 0x66, 0x66, 0x66, 0x7E, 0x7E, 0x7E, 0x7E, 0x66, 0x66, 0x66, 0x66,
+    0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x3C, 0x3C, 0x18, 0x18,
+    0x7C, 0x7C, 0x7E, 0x7E, 0x66, 0x66, 0x66, 0x66, 0x7E, 0x7E, 0x7C, 0x7C,
+    0x6E, 0x6E, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x7E, 0x7E,
+    0x7E, 0x7E, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x7E, 0x7E, 0x7E, 0x7E,
+    0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x7E, 0x7E, 0x7E, 0x7E,
+    0x7E, 0x7E, 0x7E, 0x7E, 0x60, 0x60, 0x7E, 0x7E, 0x7E, 0x7E, 0x06, 0x06,
+    0x7E, 0x7E, 0x7E, 0x7E, 0x7E, 0x7E, 0x7E, 0x7E, 0x60, 0x60, 0x60, 0x60,
+    0x60, 0x60, 0x60, 0x60, 0x7E, 0x7E, 0x7E, 0x7E, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
+
+/* End of EXPORT.C */
diff --git a/src/backgrounds/game_over_map.c b/src/backgrounds/game_over_map.c
new file mode 100644
index 0000000..53febab
--- /dev/null
+++ b/src/backgrounds/game_over_map.c
@@ -0,0 +1,63 @@
+/*
+
+ GAME_OVER_MAP.C
+
+ Map Source File.
+
+ Info:
+   Section       :
+   Bank          : 0
+   Map size      : 10 x 7
+   Tile set      :
+ Z:\var\home\matthew\Documents\Projects\flappy-gb\res\game_over.gbr Plane count
+ : 1 plane (8 bits) Plane order   : Tiles are continues Tile offset   : 0 Split
+ data    : No
+
+ This file was generated by GBMB v1.8
+
+*/
+
+#include "backgrounds/game_over_map.h"
+
+#define GAME_OVER_MAPWidth 10
+#define GAME_OVER_MAPHeight 7
+#define GAME_OVER_MAPBank 0
+
+const unsigned char GAME_OVER_MAP[] = {
+    GAME_OVER_TILE_START + 0x00, GAME_OVER_TILE_START + 0x01,
+    GAME_OVER_TILE_START + 0x02, GAME_OVER_TILE_START + 0x03,
+    GAME_OVER_TILE_START + 0x0B, GAME_OVER_TILE_START + 0x04,
+    GAME_OVER_TILE_START + 0x05, GAME_OVER_TILE_START + 0x03,
+    GAME_OVER_TILE_START + 0x06, GAME_OVER_TILE_START + 0x0B,
+    GAME_OVER_TILE_START + 0x0B, GAME_OVER_TILE_START + 0x0B,
+    GAME_OVER_TILE_START + 0x0B, GAME_OVER_TILE_START + 0x0B,
+    GAME_OVER_TILE_START + 0x0B, GAME_OVER_TILE_START + 0x0B,
+    GAME_OVER_TILE_START + 0x0B, GAME_OVER_TILE_START + 0x0B,
+    GAME_OVER_TILE_START + 0x0B, GAME_OVER_TILE_START + 0x0B,
+    GAME_OVER_TILE_START + 0x09, GAME_OVER_TILE_START + 0x0A,
+    GAME_OVER_TILE_START + 0x04, GAME_OVER_TILE_START + 0x06,
+    GAME_OVER_TILE_START + 0x03, GAME_OVER_TILE_START + 0x0B,
+    GAME_OVER_TILE_START + 0x0B, GAME_OVER_TILE_START + 0x0B,
+    GAME_OVER_TILE_START + 0x0B, GAME_OVER_TILE_START + 0x0B,
+    GAME_OVER_TILE_START + 0x0B, GAME_OVER_TILE_START + 0x0B,
+    GAME_OVER_TILE_START + 0x0B, GAME_OVER_TILE_START + 0x0B,
+    GAME_OVER_TILE_START + 0x0B, GAME_OVER_TILE_START + 0x0B,
+    GAME_OVER_TILE_START + 0x0B, GAME_OVER_TILE_START + 0x0B,
+    GAME_OVER_TILE_START + 0x0B, GAME_OVER_TILE_START + 0x0B,
+    GAME_OVER_TILE_START + 0x0B, GAME_OVER_TILE_START + 0x0B,
+    GAME_OVER_TILE_START + 0x0B, GAME_OVER_TILE_START + 0x0B,
+    GAME_OVER_TILE_START + 0x0B, GAME_OVER_TILE_START + 0x0B,
+    GAME_OVER_TILE_START + 0x0B, GAME_OVER_TILE_START + 0x0B,
+    GAME_OVER_TILE_START + 0x0B, GAME_OVER_TILE_START + 0x0B,
+    GAME_OVER_TILE_START + 0x0B, GAME_OVER_TILE_START + 0x0B,
+    GAME_OVER_TILE_START + 0x0B, GAME_OVER_TILE_START + 0x0B,
+    GAME_OVER_TILE_START + 0x0B, GAME_OVER_TILE_START + 0x0B,
+    GAME_OVER_TILE_START + 0x0B, GAME_OVER_TILE_START + 0x0B,
+    GAME_OVER_TILE_START + 0x0B, GAME_OVER_TILE_START + 0x0B,
+    GAME_OVER_TILE_START + 0x07, GAME_OVER_TILE_START + 0x08,
+    GAME_OVER_TILE_START + 0x00, GAME_OVER_TILE_START + 0x07,
+    GAME_OVER_TILE_START + 0x0B, GAME_OVER_TILE_START + 0x09,
+    GAME_OVER_TILE_START + 0x0A, GAME_OVER_TILE_START + 0x04,
+    GAME_OVER_TILE_START + 0x06, GAME_OVER_TILE_START + 0x03};
+
+/* End of GAME_OVER_MAP.C */
diff --git a/src/backgrounds/map.c b/src/backgrounds/map.c
new file mode 100644
index 0000000..9f6a660
--- /dev/null
+++ b/src/backgrounds/map.c
@@ -0,0 +1,75 @@
+/*
+
+ MAP.C
+
+ Map Source File.
+
+ Info:
+   Section       :
+   Bank          : 0
+   Map size      : 31 x 17
+   Tile set      : Z:\var\home\matthew\Documents\Projects\flappy-gb\res\bg.gbr
+   Plane count   : 1 plane (8 bits)
+   Plane order   : Tiles are continues
+   Tile offset   : 0
+   Split data    : No
+
+ This file was generated by GBMB v1.8
+
+*/
+
+#define BG_TILE_MAPWidth 32
+#define BG_TILE_MAPHeight 18
+#define BG_TILE_MAPBank 0
+
+const unsigned char BG_TILE_MAP[] = {
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x07, 0x08, 0x09, 0x07, 0x08, 0x09, 0x07, 0x08, 0x09, 0x07, 0x08, 0x09,
+    0x07, 0x08, 0x09, 0x07, 0x08, 0x09, 0x07, 0x08, 0x09, 0x07, 0x08, 0x09,
+    0x07, 0x08, 0x09, 0x07, 0x08, 0x09, 0x07, 0x08, 0x04, 0x05, 0x06, 0x04,
+    0x05, 0x06, 0x04, 0x05, 0x06, 0x04, 0x05, 0x06, 0x04, 0x05, 0x06, 0x04,
+    0x05, 0x06, 0x04, 0x05, 0x06, 0x04, 0x05, 0x06, 0x04, 0x05, 0x06, 0x04,
+    0x05, 0x06, 0x04, 0x05, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03,
+    0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03,
+    0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03,
+    0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+    0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+    0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x02, 0x02, 0x02, 0x02,
+    0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02,
+    0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02,
+    0x02, 0x02, 0x02, 0x02, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03,
+    0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03,
+    0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03};
+
+/* End of MAP.C */
diff --git a/src/backgrounds/numerals.c b/src/backgrounds/numerals.c
new file mode 100644
index 0000000..c8aa6a7
--- /dev/null
+++ b/src/backgrounds/numerals.c
@@ -0,0 +1,65 @@
+/*
+
+ EXPORT.C
+
+ Tile Source File.
+
+ Info:
+  Form                 : All tiles as one unit.
+  Format               : Gameboy 4 color.
+  Compression          : None.
+  Counter              : None.
+  Tile size            : 8 x 8
+  Tiles                : 0 to 10
+
+  Palette colors       : None.
+  SGB Palette          : None.
+  CGB Palette          : None.
+
+  Convert to metatiles : No.
+
+ This file was generated by GBTD v2.2
+
+*/
+
+#include "backgrounds/numerals.h"
+
+/* Start of tile array. */
+const unsigned char NUMERALS_TILE_DATA[] = {
+    0xFF, 0x7E, 0xFF, 0x7E, 0xFF, 0x66, 0xFF, 0x66, 0xFF, 0x66, 0xFF, 0x66,
+    0xFF, 0x7E, 0xFF, 0x7E, 0xFF, 0x1C, 0xFF, 0x3C, 0xFF, 0x7C, 0xFF, 0x0C,
+    0xFF, 0x0C, 0xFF, 0x0C, 0xFF, 0x7E, 0xFF, 0x7E, 0xFF, 0x7E, 0xFF, 0x7E,
+    0xFF, 0x06, 0xFF, 0x7E, 0xFF, 0x7E, 0xFF, 0x60, 0xFF, 0x7E, 0xFF, 0x7E,
+    0xFF, 0x7E, 0xFF, 0x7E, 0xFF, 0x06, 0xFF, 0x7E, 0xFF, 0x7E, 0xFF, 0x06,
+    0xFF, 0x7E, 0xFF, 0x7E, 0xFF, 0x60, 0xFF, 0x60, 0xFF, 0x60, 0xFF, 0x6C,
+    0xFF, 0x6C, 0xFF, 0x7E, 0xFF, 0x7E, 0xFF, 0x0C, 0xFF, 0x7E, 0xFF, 0x7E,
+    0xFF, 0x60, 0xFF, 0x7C, 0xFF, 0x7E, 0xFF, 0x06, 0xFF, 0x7E, 0xFF, 0x7C,
+    0xFF, 0x7E, 0xFF, 0x7E, 0xFF, 0x60, 0xFF, 0x7E, 0xFF, 0x7E, 0xFF, 0x66,
+    0xFF, 0x7E, 0xFF, 0x7E, 0xFF, 0x7E, 0xFF, 0x7E, 0xFF, 0x06, 0xFF, 0x0E,
+    0xFF, 0x1C, 0xFF, 0x38, 0xFF, 0x30, 0xFF, 0x30, 0xFF, 0x7E, 0xFF, 0x7E,
+    0xFF, 0x66, 0xFF, 0x7E, 0xFF, 0x7E, 0xFF, 0x66, 0xFF, 0x7E, 0xFF, 0x7E,
+    0xFF, 0x7E, 0xFF, 0x7E, 0xFF, 0x66, 0xFF, 0x7E, 0xFF, 0x7E, 0xFF, 0x06,
+    0xFF, 0x06, 0xFF, 0x06, 0xFF, 0x00, 0xFF, 0x00, 0xFF, 0x00, 0xFF, 0x00,
+    0xFF, 0x00, 0xFF, 0x00, 0xFF, 0x00, 0xFF, 0x00};
+
+const unsigned char NUMERALS_TILE_MAP[] = {
+    BLANK_NUMERAL_TILE, BLANK_NUMERAL_TILE, BLANK_NUMERAL_TILE,
+    BLANK_NUMERAL_TILE, BLANK_NUMERAL_TILE, BLANK_NUMERAL_TILE,
+    BLANK_NUMERAL_TILE, BLANK_NUMERAL_TILE, BLANK_NUMERAL_TILE,
+    BLANK_NUMERAL_TILE, BLANK_NUMERAL_TILE, BLANK_NUMERAL_TILE,
+    BLANK_NUMERAL_TILE, BLANK_NUMERAL_TILE, BLANK_NUMERAL_TILE,
+    BLANK_NUMERAL_TILE, BLANK_NUMERAL_TILE, BLANK_NUMERAL_TILE,
+    BLANK_NUMERAL_TILE, BLANK_NUMERAL_TILE, BLANK_NUMERAL_TILE,
+    BLANK_NUMERAL_TILE, BLANK_NUMERAL_TILE, BLANK_NUMERAL_TILE,
+    BLANK_NUMERAL_TILE, BLANK_NUMERAL_TILE, BLANK_NUMERAL_TILE,
+    BLANK_NUMERAL_TILE, BLANK_NUMERAL_TILE, BLANK_NUMERAL_TILE,
+    BLANK_NUMERAL_TILE, BLANK_NUMERAL_TILE, BLANK_NUMERAL_TILE,
+    BLANK_NUMERAL_TILE, BLANK_NUMERAL_TILE, BLANK_NUMERAL_TILE,
+    BLANK_NUMERAL_TILE, BLANK_NUMERAL_TILE, BLANK_NUMERAL_TILE,
+    BLANK_NUMERAL_TILE};
+
+const unsigned char NUMERALS_TILE_CLEAR[] = {
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
+
+/* End of EXPORT.C */
diff --git a/src/main.c b/src/main.c
new file mode 100644
index 0000000..ad92978
--- /dev/null
+++ b/src/main.c
@@ -0,0 +1,312 @@
+#include <bcd.h>
+#include <gb/gb.h>
+#include <rand.h>
+#include <stdbool.h>
+
+#include "backgrounds/background.h"
+#include "backgrounds/game_over.h"
+#include "backgrounds/game_over_map.h"
+#include "backgrounds/map.h"
+#include "backgrounds/numerals.h"
+#include "defines.h"
+#include "metasprite.h"
+#include "pipe.h"
+#include "sprites/bird.h"
+#include "sprites/button.h"
+#include "sprites/pipe.h"
+
+UINT8 g_background_position = 0;
+UINT8 g_foreground_position = 0;
+BCD g_player_score = 0;
+BCD g_player_high_score = 0;
+UINT8 g_foreground_scroll_speed = FOREGROUND_SCROLL_SPEED;
+Metasprite g_bird = {
+    .x = 30,
+    .y = 70,
+    .width = BIRD_WIDTH,
+    .height = BIRD_HEIGHT,
+    .velocity_x = 0,
+    .velocity_y = 0,
+    .sprite_ids = {0, 1, 2, 3},
+    .tile_ids = {0, 1, 2, 3},
+};
+
+Metasprite g_button = {.x = 80,
+                       .y = 68,
+                       .width = 16,
+                       .height = 16,
+                       .velocity_x = 0,
+                       .velocity_y = 0,
+                       .sprite_ids = {4, 5, 6, 7},
+                       .tile_ids = {BUTTON_TILE_START, BUTTON_TILE_START + 1,
+                                    BUTTON_TILE_START + 2,
+                                    BUTTON_TILE_START + 3}};
+
+void on_hbl_interrupt() {
+  switch (LYC_REG) {
+  case 0x00:
+    move_bkg(g_background_position, 0);
+    LYC_REG = 0x78;
+    break;
+  case 0x78:
+    move_bkg(g_foreground_position, 0);
+    LYC_REG = 0x00;
+    break;
+  }
+}
+
+static inline void wait_frames(UINT8 frames) {
+  static UINT8 wait_counter = 0;
+  for (wait_counter = frames; wait_counter != 0; wait_counter--) {
+    wait_vbl_done();
+  }
+}
+
+inline void wait_for_button_press(UINT8 mask) {
+  while (!(joypad() & mask)) {
+    wait_vbl_done();
+  }
+}
+
+static inline void display_score() {
+  static UINT8 text_buffer[9];
+  bcd2text(&g_player_score, NUMERALS_TILE_START, text_buffer);
+  static UINT8 count;
+  for (count = 0; count < 7; count++) {
+    if (text_buffer[count] == NUMERALS_TILE_START) {
+      text_buffer[count] = NUMERALS_TILE_START + 10;
+    } else {
+      break;
+    }
+  }
+  move_win(WINDOW_CENTERING_OFFSET + (((7 - count) * TILE_SIZE) / 2), 133);
+  set_win_tiles(0, 0, 8, 1, text_buffer);
+}
+
+static inline void update_bird_animation_state() {
+  static UINT8 current_animation_frame = 0;
+  switch (current_animation_frame) {
+  case 0:
+    g_bird.tile_ids[0] = 0;
+    g_bird.tile_ids[1] = 1;
+    current_animation_frame = 1;
+    break;
+  case 1:
+    g_bird.tile_ids[0] = 4;
+    g_bird.tile_ids[1] = 5;
+    current_animation_frame = 2;
+    break;
+  case 2:
+    g_bird.tile_ids[0] = 6;
+    g_bird.tile_ids[1] = 7;
+    current_animation_frame = 0;
+    break;
+  }
+  metasprite_update_tiles(&g_bird);
+}
+
+static inline void update_button_animation_state() {
+  static UINT8 current_animation_frame = 0;
+  switch (current_animation_frame) {
+  case 0:
+    g_button.tile_ids[0] = BUTTON_TILE_START + 4;
+    g_button.tile_ids[1] = BUTTON_TILE_START + 5;
+    g_button.tile_ids[2] = BUTTON_TILE_START + 6;
+    g_button.tile_ids[3] = BUTTON_TILE_START + 7;
+    current_animation_frame = 1;
+    break;
+  case 1:
+    g_button.tile_ids[0] = BUTTON_TILE_START;
+    g_button.tile_ids[1] = BUTTON_TILE_START + 1;
+    g_button.tile_ids[2] = BUTTON_TILE_START + 2;
+    g_button.tile_ids[3] = BUTTON_TILE_START + 3;
+    current_animation_frame = 0;
+    break;
+  }
+  metasprite_update_tiles(&g_button);
+}
+
+inline void play_death_flash() {
+  BGP_REG = 0x90;
+  OBP0_REG = 0x90;
+  wait_frames(3);
+  BGP_REG = 0x40;
+  OBP0_REG = 0x40;
+  wait_frames(3);
+  BGP_REG = 0x00;
+  OBP0_REG = 0x00;
+  wait_frames(3);
+  BGP_REG = 0x40;
+  OBP0_REG = 0x40;
+  wait_frames(3);
+  BGP_REG = 0x90;
+  OBP0_REG = 0x90;
+  wait_frames(3);
+  BGP_REG = 0xE4;
+  OBP0_REG = 0xE4;
+}
+
+inline void play_jump_sound() {
+  NR10_REG = 0x16;
+  NR11_REG = 0x40;
+  NR12_REG = 0x73;
+  NR13_REG = 0x00;
+  NR14_REG = 0xC3;
+}
+
+void main(void) {
+  // Init sound
+  NR52_REG = 0x80;
+  NR50_REG = 0x77;
+  NR51_REG = 0xFF;
+  // Load Background
+  set_bkg_data(0, 10, BG_TILE_DATA);
+  set_bkg_data(NUMERALS_TILE_START, NUMERALS_TILE_START + 10,
+               NUMERALS_TILE_DATA);
+  set_bkg_data(GAME_OVER_TILE_START, GAME_OVER_TILE_START + 10,
+               GAME_OVER_TILE_DATA);
+  set_bkg_tiles(0, 0, BG_TILE_MAPWidth, BG_TILE_MAPHeight, BG_TILE_MAP);
+  // Load tiles into VRAM
+  set_sprite_data(0, 8, BIRD_TILE_DATA);
+  set_sprite_data(PIPE_TILE_START, PIPE_TILE_START + 4, PIPE_TILE_DATA);
+  set_sprite_data(BUTTON_TILE_START, BUTTON_TILE_START + 7, BUTTON_TILE_DATA);
+
+  STAT_REG = 0x45; // Enable H-Blank Interrupt
+  LYC_REG = 0x00;
+
+  disable_interrupts();
+  add_LCD(on_hbl_interrupt);
+  enable_interrupts();
+
+  set_interrupts(VBL_IFLAG | LCD_IFLAG);
+
+  metasprite_init(&g_bird);
+
+  SHOW_BKG;
+  SHOW_SPRITES;
+  SHOW_WIN;
+  DISPLAY_ON;
+
+  while (true) {
+
+    metasprite_move_to(&g_bird, 30, 70);
+    set_win_tiles(0, 0, 20, 2, NUMERALS_TILE_MAP);
+    g_player_score = 0;
+    display_score();
+    metasprite_init(&g_button);
+
+    static UINT8 last_button_state;
+    static UINT8 button_state;
+    static UINT8 frame_count = 0;
+    while (true) {
+      button_state = joypad();
+      if (button_state & J_A) {
+        play_jump_sound();
+        metasprite_jump(&g_bird);
+        last_button_state = button_state;
+        break;
+      }
+      if (frame_count % CYCLE_ANIMATION_N_FRAMES == 0) {
+        update_bird_animation_state();
+      }
+      if (frame_count % CYCLE_BUTTON_N_FRAMES == 0) {
+        update_button_animation_state();
+      }
+      frame_count += 1;
+      g_background_position += BACKGROUND_SCROLL_SPEED;
+      g_foreground_position += g_foreground_scroll_speed;
+      wait_vbl_done();
+    }
+
+    initrand(DIV_REG);
+
+    static Pipe pipe;
+    pipe.x = 200;
+    pipe.gap_skip = 8;
+    for (UINT8 i = 0; i < 36; i++) {
+      pipe.sprite_ids[i] = i + 4;
+    }
+    pipe_init(&pipe);
+    pipe_move_gap_height(&pipe, 2 + (((UINT8)rand()) % (15 - pipe.gap_skip)));
+
+    while (true) {
+      pipe_scroll_horizontal(&pipe, -1 * g_foreground_scroll_speed);
+      if (pipe.x == 0xF0) {
+        static const BCD score_per_pipe = 1;
+        static BCD *const spp_ref = &score_per_pipe;
+
+        bcd_add(&g_player_score, spp_ref);
+        display_score();
+        switch (g_player_score) {
+        case 0x20:
+          pipe.gap_skip = 7;
+          break;
+        case 0x35:
+          pipe.gap_skip = 6;
+          break;
+        case 0x50:
+          g_foreground_scroll_speed = 3;
+          break;
+        }
+        pipe_move_gap_height(&pipe,
+                             2 + (((UINT8)rand()) % (15 - pipe.gap_skip)));
+        pipe_scroll_horizontal(&pipe, -78);
+      }
+      button_state = joypad();
+      if ((button_state & J_A) && !(last_button_state & J_A)) {
+        play_jump_sound();
+        metasprite_jump(&g_bird);
+      }
+      if (frame_count % APPLY_GRAVITY_N_FRAMES == 0) {
+        metasprite_apply_gravity(&g_bird);
+      }
+      if (frame_count % CYCLE_ANIMATION_N_FRAMES == 0) {
+        update_bird_animation_state();
+      }
+      frame_count += 1;
+      g_background_position += BACKGROUND_SCROLL_SPEED;
+      g_foreground_position += g_foreground_scroll_speed;
+      metasprite_update_position_using_velocity(&g_bird);
+      if (g_bird.y < 0x05) {
+        g_bird.y = 0x05;
+        g_bird.velocity_y = 0x00;
+      }
+      if (g_bird.y + g_bird.height > 0x85) {
+        break;
+      }
+      if (g_bird.x > (pipe.x - g_bird.width) &&
+          g_bird.x < pipe.x + PIPE_WIDTH) {
+        if (g_bird.y < ((pipe.height_of_gap + 1) * TILE_SIZE) ||
+            g_bird.y + g_bird.height > ((pipe.height_of_gap * TILE_SIZE) +
+                                        (pipe.gap_skip * TILE_SIZE))) {
+          break;
+        }
+      }
+      last_button_state = button_state;
+      wait_vbl_done();
+    }
+    play_death_flash();
+    pipe_hide(&pipe);
+    metasprite_hide(&g_bird);
+    set_sprite_prop(g_button.sprite_ids[0], 0);
+    set_sprite_prop(g_button.sprite_ids[1], 0);
+    set_sprite_prop(g_button.sprite_ids[2], 0);
+    set_sprite_prop(g_button.sprite_ids[3], 0);
+    g_foreground_scroll_speed = FOREGROUND_SCROLL_SPEED;
+    if (g_player_score > g_player_high_score) {
+      g_player_high_score = g_player_score;
+    }
+    static UINT8 score_buffer[9];
+    static UINT8 high_score_buffer[9];
+    bcd2text(&g_player_score, NUMERALS_TILE_START, score_buffer);
+    bcd2text(&g_player_high_score, NUMERALS_TILE_START, high_score_buffer);
+    BGP_REG = 0xC0;
+    set_win_tiles(0, 0, 20, 2, NUMERALS_TILE_CLEAR);
+    set_win_tiles(6, 4, GAME_OVER_MAPWidth, GAME_OVER_MAPHeight, GAME_OVER_MAP);
+    set_win_tiles(6, 8, 8, 1, score_buffer);
+    set_win_tiles(6, 12, 8, 1, high_score_buffer);
+    move_win(0, 0);
+    wait_frames(180);
+    BGP_REG = 0xE4;
+  }
+}
diff --git a/src/metasprite.c b/src/metasprite.c
new file mode 100644
index 0000000..262d1c4
--- /dev/null
+++ b/src/metasprite.c
@@ -0,0 +1,52 @@
+#include "metasprite.h"
+
+inline void metasprite_init(Metasprite *metasprite) {
+  metasprite_update_tiles(metasprite);
+  metasprite_move_to(metasprite, metasprite->x, metasprite->y);
+}
+
+inline void metasprite_move_offset(Metasprite *metasprite,
+                                   ScreenCoordinate offset_x,
+                                   ScreenCoordinate offset_y) {
+  metasprite_move_to(metasprite, metasprite->x + offset_x,
+                     metasprite->y + offset_y);
+}
+
+// TODO: consider height and width
+inline void metasprite_move_to(Metasprite *metasprite, ScreenCoordinate new_x,
+                               ScreenCoordinate new_y) {
+  metasprite->x = new_x;
+  metasprite->y = new_y;
+  move_sprite(metasprite->sprite_ids[0], new_x, new_y);
+  move_sprite(metasprite->sprite_ids[1], new_x, new_y + TILE_SIZE);
+  move_sprite(metasprite->sprite_ids[2], new_x + TILE_SIZE, new_y);
+  move_sprite(metasprite->sprite_ids[3], new_x + TILE_SIZE, new_y + TILE_SIZE);
+}
+
+inline void metasprite_apply_gravity(Metasprite *metasprite) {
+  metasprite->velocity_y += GRAVITY_ACCELERATION;
+}
+
+inline void metasprite_update_position_using_velocity(Metasprite *metasprite) {
+  metasprite->x += metasprite->velocity_x;
+  metasprite->y += metasprite->velocity_y;
+  metasprite_move_to(metasprite, metasprite->x, metasprite->y);
+}
+
+inline void metasprite_jump(Metasprite *metasprite) {
+  metasprite->velocity_y = JUMP_VELOCITY;
+}
+
+inline void metasprite_update_tiles(Metasprite *metasprite) {
+  set_sprite_tile(metasprite->sprite_ids[0], metasprite->tile_ids[0]);
+  set_sprite_tile(metasprite->sprite_ids[1], metasprite->tile_ids[1]);
+  set_sprite_tile(metasprite->sprite_ids[2], metasprite->tile_ids[2]);
+  set_sprite_tile(metasprite->sprite_ids[3], metasprite->tile_ids[3]);
+}
+
+inline void metasprite_hide(Metasprite *metasprite) {
+  move_sprite(metasprite->sprite_ids[0], 0, 0);
+  move_sprite(metasprite->sprite_ids[1], 0, 0);
+  move_sprite(metasprite->sprite_ids[2], 0, 0);
+  move_sprite(metasprite->sprite_ids[3], 0, 0);
+}
diff --git a/src/pipe.c b/src/pipe.c
new file mode 100644
index 0000000..ff9656d
--- /dev/null
+++ b/src/pipe.c
@@ -0,0 +1,84 @@
+#include "pipe.h"
+#include "defines.h"
+
+inline void pipe_init(Pipe *pipe) {
+  set_sprite_tile(pipe->sprite_ids[PIPE_TILE_TOP_LEFT],
+                  PIPE_TILE_START + CAP_LEFT);
+  set_sprite_prop(pipe->sprite_ids[PIPE_TILE_TOP_LEFT], S_FLIPY);
+
+  set_sprite_tile(pipe->sprite_ids[PIPE_TILE_TOP_MIDDLE],
+                  PIPE_TILE_START + CAP_MIDDLE);
+  set_sprite_prop(pipe->sprite_ids[PIPE_TILE_TOP_MIDDLE], S_FLIPY);
+
+  set_sprite_tile(pipe->sprite_ids[PIPE_TILE_TOP_RIGHT],
+                  PIPE_TILE_START + CAP_LEFT);
+  set_sprite_prop(pipe->sprite_ids[PIPE_TILE_TOP_RIGHT], S_FLIPX | S_FLIPY);
+
+  set_sprite_tile(pipe->sprite_ids[PIPE_TILE_BOTTOM_LEFT],
+                  PIPE_TILE_START + CAP_LEFT);
+
+  set_sprite_tile(pipe->sprite_ids[PIPE_TILE_BOTTOM_MIDDLE],
+                  PIPE_TILE_START + CAP_MIDDLE);
+
+  set_sprite_tile(pipe->sprite_ids[PIPE_TILE_BOTTOM_RIGHT],
+                  PIPE_TILE_START + CAP_LEFT);
+  set_sprite_prop(pipe->sprite_ids[PIPE_TILE_BOTTOM_RIGHT], S_FLIPX);
+
+  for (UINT8 i = 6; i < 16; i++) {
+    set_sprite_tile(pipe->sprite_ids[i], PIPE_TILE_START + MAIN_LEFT);
+  }
+  for (UINT8 i = 16; i < 26; i++) {
+    set_sprite_tile(pipe->sprite_ids[i], PIPE_TILE_START + MAIN_MIDDLE);
+  }
+  for (UINT8 i = 26; i < 36; i++) {
+    set_sprite_tile(pipe->sprite_ids[i], PIPE_TILE_START + MAIN_LEFT);
+    set_sprite_prop(pipe->sprite_ids[i], S_FLIPX);
+  }
+}
+
+inline void pipe_scroll_horizontal(Pipe *pipe, ScreenCoordinate x) {
+  pipe->x += x;
+  for (UINT8 i = 36; i != 0; i--) {
+    scroll_sprite(pipe->sprite_ids[i - 1], x, 0);
+  }
+}
+
+inline void pipe_move_gap_height(Pipe *pipe, UINT8 gap_height) {
+  pipe->height_of_gap = gap_height;
+  for (UINT8 i = 0; i < gap_height; i++) {
+    move_sprite(pipe->sprite_ids[i + 4], pipe->x, i * TILE_SIZE);
+    move_sprite(pipe->sprite_ids[i + 14], pipe->x + TILE_SIZE, i * TILE_SIZE);
+    move_sprite(pipe->sprite_ids[i + 24], pipe->x + TILE_SIZE + TILE_SIZE,
+                i * TILE_SIZE);
+  }
+  move_sprite(pipe->sprite_ids[PIPE_TILE_TOP_LEFT], pipe->x,
+              gap_height * TILE_SIZE);
+  move_sprite(pipe->sprite_ids[PIPE_TILE_TOP_MIDDLE], pipe->x + TILE_SIZE,
+              gap_height * TILE_SIZE);
+  move_sprite(pipe->sprite_ids[PIPE_TILE_TOP_RIGHT],
+              pipe->x + TILE_SIZE + TILE_SIZE, gap_height * TILE_SIZE);
+
+  move_sprite(pipe->sprite_ids[PIPE_TILE_BOTTOM_LEFT], pipe->x,
+              (gap_height + pipe->gap_skip) * TILE_SIZE);
+  move_sprite(pipe->sprite_ids[PIPE_TILE_BOTTOM_MIDDLE], pipe->x + TILE_SIZE,
+              (gap_height + pipe->gap_skip) * TILE_SIZE);
+  move_sprite(pipe->sprite_ids[PIPE_TILE_BOTTOM_RIGHT],
+              pipe->x + TILE_SIZE + TILE_SIZE,
+              (gap_height + pipe->gap_skip) * TILE_SIZE);
+
+  for (UINT8 i = gap_height; i < (16 - pipe->gap_skip); i++) {
+    move_sprite(pipe->sprite_ids[i + 4], pipe->x,
+                (i + pipe->gap_skip + 1) * TILE_SIZE);
+    move_sprite(pipe->sprite_ids[i + 14], pipe->x + TILE_SIZE,
+                (i + pipe->gap_skip + 1) * TILE_SIZE);
+    move_sprite(pipe->sprite_ids[i + 24], pipe->x + TILE_SIZE + TILE_SIZE,
+                (i + pipe->gap_skip + 1) * TILE_SIZE);
+  }
+}
+
+inline void pipe_hide(Pipe *pipe) {
+  pipe->x += 0;
+  for (UINT8 i = 36; i != 0; i--) {
+    move_sprite(pipe->sprite_ids[i - 1], 0, 0);
+  }
+}
diff --git a/src/sprites/bird.c b/src/sprites/bird.c
new file mode 100644
index 0000000..3d7bc20
--- /dev/null
+++ b/src/sprites/bird.c
@@ -0,0 +1,39 @@
+/*
+
+ BIRD.C
+
+ Tile Source File.
+
+ Info:
+  Form                 : All tiles as one unit.
+  Format               : Gameboy 4 color.
+  Compression          : None.
+  Counter              : None.
+  Tile size            : 8 x 8
+  Tiles                : 0 to 3
+
+  Palette colors       : None.
+  SGB Palette          : None.
+  CGB Palette          : None.
+
+  Convert to metatiles : No.
+
+ This file was generated by GBTD v2.2
+
+*/
+
+/* Start of tile array. */
+const unsigned char BIRD_TILE_DATA[] = {
+    0x03, 0x03, 0x0C, 0x0F, 0x10, 0x1F, 0x78, 0x7F, 0x84, 0xFF, 0x82, 0xFF,
+    0xC6, 0xFF, 0x7C, 0x7F, 0x38, 0x3F, 0x20, 0x3F, 0x18, 0x1F, 0x07, 0x07,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xF0, 0xF0, 0x78, 0xC8,
+    0xFC, 0x84, 0xFE, 0x8A, 0xFE, 0x8A, 0x7E, 0xC2, 0x3F, 0xFF, 0x40, 0xFF,
+    0xBF, 0xFF, 0x41, 0xFF, 0x3E, 0xFE, 0xC0, 0xC0, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x03, 0x03, 0x0C, 0x0F, 0x10, 0x1F, 0x20, 0x3F,
+    0x40, 0x7F, 0x7C, 0x7F, 0x82, 0xFF, 0xC6, 0xFF, 0x7C, 0x7F, 0x20, 0x3F,
+    0x18, 0x1F, 0x07, 0x07, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x03, 0x03, 0x0C, 0x0F, 0x10, 0x1F, 0x20, 0x3F, 0x40, 0x7F, 0x40, 0x7F,
+    0x7C, 0x7F, 0xC6, 0xFF, 0x84, 0xFF, 0x98, 0xFF, 0x78, 0x7F, 0x07, 0x07,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
+
+/* End of BIRD.C */
diff --git a/src/sprites/button.c b/src/sprites/button.c
new file mode 100644
index 0000000..c17576e
--- /dev/null
+++ b/src/sprites/button.c
@@ -0,0 +1,39 @@
+/*
+
+ EXPORT.C
+
+ Tile Source File.
+
+ Info:
+  Form                 : All tiles as one unit.
+  Format               : Gameboy 4 color.
+  Compression          : None.
+  Counter              : None.
+  Tile size            : 8 x 8
+  Tiles                : 0 to 7
+
+  Palette colors       : None.
+  SGB Palette          : None.
+  CGB Palette          : None.
+
+  Convert to metatiles : No.
+
+ This file was generated by GBTD v2.2
+
+*/
+
+/* Start of tile array. */
+const unsigned char BUTTON_TILE_DATA[] = {
+    0x07, 0x07, 0x1F, 0x1C, 0x3F, 0x31, 0x7F, 0x63, 0x7F, 0x47, 0xFF, 0xCE,
+    0xFF, 0x8C, 0xFF, 0x8F, 0xFF, 0x8F, 0xFF, 0x8C, 0xFF, 0xCC, 0x7F, 0x4C,
+    0x7F, 0x60, 0x3F, 0x30, 0x1C, 0x1F, 0x07, 0x07, 0xE0, 0xE0, 0xF8, 0x38,
+    0xFC, 0x8C, 0xFE, 0xC6, 0xFE, 0xE2, 0xFF, 0x73, 0xFD, 0x33, 0xFD, 0xF3,
+    0xFD, 0xF3, 0xF9, 0x37, 0xFB, 0x37, 0xF2, 0x3E, 0xE6, 0x1E, 0x8C, 0x7C,
+    0x38, 0xF8, 0xE0, 0xE0, 0x07, 0x07, 0x1C, 0x1F, 0x31, 0x3E, 0x67, 0x79,
+    0x4F, 0x73, 0xDF, 0xE7, 0x9F, 0xEE, 0xBF, 0xCC, 0xBF, 0xCF, 0xBF, 0xCF,
+    0xFF, 0xCC, 0x7F, 0x4C, 0x7F, 0x6C, 0x3F, 0x30, 0x1F, 0x1C, 0x07, 0x07,
+    0xE0, 0xE0, 0x38, 0xF8, 0xFC, 0x0C, 0xFE, 0x86, 0xFE, 0xC2, 0xFF, 0xE3,
+    0xFF, 0x71, 0xFF, 0x31, 0xFF, 0xF1, 0xFF, 0xF1, 0xFF, 0x33, 0xFE, 0x32,
+    0xFE, 0x36, 0xFC, 0x0C, 0xF8, 0x38, 0xE0, 0xE0};
+
+/* End of EXPORT.C */
diff --git a/src/sprites/pipe.c b/src/sprites/pipe.c
new file mode 100644
index 0000000..918cae0
--- /dev/null
+++ b/src/sprites/pipe.c
@@ -0,0 +1,34 @@
+/*
+
+ EXPORT.C
+
+ Tile Source File.
+
+ Info:
+  Form                 : All tiles as one unit.
+  Format               : Gameboy 4 color.
+  Compression          : None.
+  Counter              : None.
+  Tile size            : 8 x 8
+  Tiles                : 0 to 0
+
+  Palette colors       : None.
+  SGB Palette          : None.
+  CGB Palette          : None.
+
+  Convert to metatiles : No.
+
+ This file was generated by GBTD v2.2
+
+*/
+
+/* Start of tile array. */
+const unsigned char PIPE_TILE_DATA[] = {
+    0xFF, 0xFF, 0xE8, 0x97, 0xE8, 0x97, 0xE8, 0x97, 0xE8, 0x97, 0xE8,
+    0x97, 0xE8, 0x97, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0xFF, 0x00, 0xFF,
+    0x00, 0xFF, 0x00, 0xFF, 0x00, 0xFF, 0x00, 0xFF, 0xFF, 0xFF, 0x74,
+    0x4B, 0x74, 0x4B, 0x74, 0x4B, 0x74, 0x4B, 0x74, 0x4B, 0x74, 0x4B,
+    0x74, 0x4B, 0x74, 0x4B, 0x00, 0xFF, 0x00, 0xFF, 0x00, 0xFF, 0x00,
+    0xFF, 0x00, 0xFF, 0x00, 0xFF, 0x00, 0xFF, 0x00, 0xFF};
+
+/* End of EXPORT.C */
-- 
cgit v1.2.3