Merge branch 'max/game' of github.com:lonkaars/crepe

18 files changed, 391 insertions, 305 deletions

diff --git a/game/CMakeLists.txt b/game/CMakeLists.txt
index dc55523..937b5e6 100644
--- a/game/CMakeLists.txt
+++ b/game/CMakeLists.txt
@@ -9,17 +9,17 @@ project(game C CXX)
 
 add_subdirectory(../src crepe)
 add_executable(main
-	AquariumSubScene.cpp
-	BackgroundSubScene.cpp
-	ForestParallaxScript.cpp
-	ForestSubScene.cpp
+	background/AquariumSubScene.cpp
+	background/BackgroundSubScene.cpp
+	background/ForestParallaxScript.cpp
+	background/ForestSubScene.cpp
 	GameScene.cpp
-	HallwaySubScene.cpp
+	background/HallwaySubScene.cpp
 	MoveCameraManualyScript.cpp
 	PlayerScript.cpp
 	PlayerSubScene.cpp
 	StartGameScript.cpp
-	StartSubScene.cpp
+	background/StartSubScene.cpp
 	main.cpp
 )
 
diff --git a/game/Config.h b/game/Config.h
new file mode 100644
index 0000000..ec753df
--- /dev/null
+++ b/game/Config.h
@@ -0,0 +1,21 @@
+#pragma once
+
+static constexpr int SORT_IN_LAY_BACK_BACKGROUND = 3; // For all scenes
+static constexpr int SORT_IN_LAY_BACKGROUND = 4; // For all scenes
+static constexpr int SORT_IN_LAY_FORE_BACKGROUND = 5; // For all scenes
+static constexpr int SORT_IN_LAY_PARTICLES_BACKGROUND = 6; // For all scenes
+static constexpr int SORT_IN_LAY_OBSTACLES = 8; // Only for GameScene
+static constexpr int SORT_IN_LAY_PLAYER = 10; // Only for GameScene
+static constexpr int SORT_IN_LAY_PARTICLES_FOREGROUND = 15; // Only for GameScene
+
+static constexpr int COLL_LAY_BOT_TOP = 1; // Only for GameScene
+static constexpr int COLL_LAY_BOT_LOW = 2; // Only for GameScene
+static constexpr int COLL_LAY_BOT_HIGH = 3; // Only for GameScene
+static constexpr int COLL_LAY_PLAYER = 4; // Only for GameScene
+static constexpr int COLL_LAY_WALL_FRAGS = 5; // Only for GameScene
+
+static constexpr int GAME_HEIGHT = 800; // In game units
+
+static constexpr int VIEWPORT_X = 1100; // In game units
+// 'GAME_HEIGHT' (below) should be replaced by '500' when game development is finished
+static constexpr int VIEWPORT_Y = GAME_HEIGHT; // In game units
diff --git a/game/GameScene.cpp b/game/GameScene.cpp
index c280474..91da092 100644
--- a/game/GameScene.cpp
+++ b/game/GameScene.cpp
@@ -1,9 +1,11 @@
 #include "GameScene.h"
-#include "BackgroundSubScene.h"
+#include "Config.h"
 #include "MoveCameraManualyScript.h"
 #include "PlayerSubScene.h"
 #include "StartGameScript.h"
 
+#include "background/BackgroundSubScene.h"
+
 #include <cmath>
 #include <crepe/api/Animator.h>
 #include <crepe/api/Asset.h>
@@ -19,7 +21,6 @@
 #include <crepe/api/Sprite.h>
 #include <crepe/api/Transform.h>
 #include <crepe/types.h>
-#include <iostream>
 
 using namespace crepe;
 using namespace std;
@@ -28,7 +29,7 @@ void GameScene::load_scene() {
 	BackgroundSubScene background(*this);
 
 	GameObject camera = new_object("camera", "camera", vec2(650, 0));
-	camera.add_component<Camera>(ivec2(990, 720), vec2(1100, 800),
+	camera.add_component<Camera>(ivec2(990, 720), vec2(VIEWPORT_X, VIEWPORT_Y),
 								 Camera::Data{
 									 .bg_color = Color::RED,
 								 });
@@ -40,11 +41,24 @@ void GameScene::load_scene() {
 	GameObject floor = new_object("floor", "game_world", vec2(0, 325));
 	floor.add_component<Rigidbody>(Rigidbody::Data{
 		.body_type = Rigidbody::BodyType::STATIC,
+		.collision_layer = COLL_LAY_BOT_TOP,
 	});
 	floor.add_component<BoxCollider>(vec2(INFINITY, 200));
+	GameObject floor_low = new_object("floor_low", "game_world", vec2(0, 350));
+	floor_low.add_component<Rigidbody>(Rigidbody::Data{
+		.body_type = Rigidbody::BodyType::STATIC,
+		.collision_layer = COLL_LAY_BOT_LOW,
+	});
+	floor_low.add_component<BoxCollider>(vec2(INFINITY, 200));
+	GameObject floor_high = new_object("floor_high", "game_world", vec2(0, 300));
+	floor_high.add_component<Rigidbody>(Rigidbody::Data{
+		.body_type = Rigidbody::BodyType::STATIC,
+		.collision_layer = COLL_LAY_BOT_HIGH,
+	});
 	GameObject ceiling = new_object("ceiling", "game_world", vec2(0, -325));
 	ceiling.add_component<Rigidbody>(Rigidbody::Data{
 		.body_type = Rigidbody::BodyType::STATIC,
+		.collision_layer = COLL_LAY_BOT_TOP,
 	});
 	ceiling.add_component<BoxCollider>(vec2(INFINITY, 200));
 
diff --git a/game/PlayerSubScene.cpp b/game/PlayerSubScene.cpp
index 01a383a..b361a82 100644
--- a/game/PlayerSubScene.cpp
+++ b/game/PlayerSubScene.cpp
@@ -1,4 +1,5 @@
 #include "PlayerSubScene.h"
+#include "Config.h"
 #include "PlayerScript.h"
 
 #include <crepe/api/Animator.h>
@@ -13,25 +14,25 @@ using namespace std;
 PlayerSubScene::PlayerSubScene(Scene & scn) {
 	GameObject player = scn.new_object("player", "player", vec2(-100, 200));
 	Asset player_body_asset{"asset/barry/defaultBody.png"};
-	Sprite & player_body_sprite
-		= player.add_component<Sprite>(player_body_asset, Sprite::Data{
-															  .sorting_in_layer = 10,
-															  .order_in_layer = 0,
-															  .size = vec2(0, 50),
-														  });
+	Sprite & player_body_sprite = player.add_component<Sprite>(
+		player_body_asset, Sprite::Data{
+							   .sorting_in_layer = SORT_IN_LAY_PLAYER,
+							   .order_in_layer = 0,
+							   .size = vec2(0, 50),
+						   });
 	player.add_component<Animator>(player_body_sprite, ivec2(32, 32), uvec2(4, 8),
 								   Animator::Data{
 									   .fps = 5,
 									   .looping = true,
 								   });
 	Asset player_head_asset{"asset/barry/defaultHead.png"};
-	Sprite & player_head_sprite
-		= player.add_component<Sprite>(player_head_asset, Sprite::Data{
-															  .sorting_in_layer = 10,
-															  .order_in_layer = 1,
-															  .size = vec2(0, 50),
-															  .position_offset = vec2(0, -20),
-														  });
+	Sprite & player_head_sprite = player.add_component<Sprite>(
+		player_head_asset, Sprite::Data{
+							   .sorting_in_layer = SORT_IN_LAY_PLAYER,
+							   .order_in_layer = 1,
+							   .size = vec2(0, 50),
+							   .position_offset = vec2(0, -20),
+						   });
 	player.add_component<Animator>(player_head_sprite, ivec2(32, 32), uvec2(4, 8),
 								   Animator::Data{
 									   .fps = 5,
@@ -40,7 +41,7 @@ PlayerSubScene::PlayerSubScene(Scene & scn) {
 	Asset player_jetpack_asset{"asset/barry/jetpackDefault.png"};
 	Sprite & player_jetpack_sprite = player.add_component<Sprite>(
 		player_jetpack_asset, Sprite::Data{
-								  .sorting_in_layer = 10,
+								  .sorting_in_layer = SORT_IN_LAY_PLAYER,
 								  .order_in_layer = 2,
 								  .size = vec2(0, 60),
 								  .position_offset = vec2(-20, 0),
@@ -55,7 +56,8 @@ PlayerSubScene::PlayerSubScene(Scene & scn) {
 		.gravity_scale = 20,
 		.body_type = Rigidbody::BodyType::DYNAMIC,
 		.linear_velocity = vec2(100, 0),
-		.collision_layer = 10,
+		.collision_layers = {COLL_LAY_BOT_TOP},
+		.collision_layer = COLL_LAY_PLAYER,
 	});
 	player.add_component<BoxCollider>(vec2(50, 50));
 	player.add_component<BehaviorScript>().set_script<PlayerScript>().active = false;
diff --git a/game/AquariumSubScene.cpp b/game/background/AquariumSubScene.cpp
index 40e22b7..579e633 100644
--- a/game/AquariumSubScene.cpp
+++ b/game/background/AquariumSubScene.cpp
@@ -1,5 +1,7 @@
 #include "AquariumSubScene.h"
 
+#include "../Config.h"
+
 #include <crepe/api/Animator.h>
 #include <crepe/api/GameObject.h>
 #include <crepe/api/Scene.h>
@@ -15,21 +17,23 @@ float AquariumSubScene::create(Scene & scn, float begin_x) {
 	GameObject aquarium_begin
 		= scn.new_object("aquarium_begin", "background", vec2(begin_x, 0));
 	Asset aquarium_begin_asset{"asset/background/aquarium/glassTubeFG_1_TVOS.png"};
-	aquarium_begin.add_component<Sprite>(aquarium_begin_asset, Sprite::Data{
-																   .sorting_in_layer = 4,
-																   .order_in_layer = 0,
-																   .size = vec2(0, 800),
-															   });
+	aquarium_begin.add_component<Sprite>(aquarium_begin_asset,
+										 Sprite::Data{
+											 .sorting_in_layer = SORT_IN_LAY_BACKGROUND,
+											 .order_in_layer = 0,
+											 .size = vec2(0, GAME_HEIGHT),
+										 });
 	begin_x += 600;
 
 	GameObject aquarium_middle_1
 		= scn.new_object("aquarium_middle", "background", vec2(begin_x, 0));
 	Asset aquarium_middle_1_asset{"asset/background/aquarium/glassTubeFG_3_TVOS.png"};
-	aquarium_middle_1.add_component<Sprite>(aquarium_middle_1_asset, Sprite::Data{
-																		 .sorting_in_layer = 4,
-																		 .order_in_layer = 2,
-																		 .size = vec2(0, 800),
-																	 });
+	aquarium_middle_1.add_component<Sprite>(aquarium_middle_1_asset,
+											Sprite::Data{
+												.sorting_in_layer = SORT_IN_LAY_BACKGROUND,
+												.order_in_layer = 2,
+												.size = vec2(0, GAME_HEIGHT),
+											});
 	begin_x += 400;
 
 	this->add_background(scn, begin_x - 200);
@@ -37,21 +41,23 @@ float AquariumSubScene::create(Scene & scn, float begin_x) {
 	GameObject aquarium_middle_2
 		= scn.new_object("aquarium_middle", "background", vec2(begin_x, 0));
 	Asset aquarium_middle_2_asset{"asset/background/aquarium/glassTubeFG_3_TVOS.png"};
-	aquarium_middle_2.add_component<Sprite>(aquarium_middle_2_asset, Sprite::Data{
-																		 .sorting_in_layer = 4,
-																		 .order_in_layer = 3,
-																		 .size = vec2(0, 800),
-																	 });
+	aquarium_middle_2.add_component<Sprite>(aquarium_middle_2_asset,
+											Sprite::Data{
+												.sorting_in_layer = SORT_IN_LAY_BACKGROUND,
+												.order_in_layer = 3,
+												.size = vec2(0, GAME_HEIGHT),
+											});
 	begin_x += 400;
 
 	GameObject aquarium_middle_3
 		= scn.new_object("aquarium_middle", "background", vec2(begin_x, 0));
 	Asset aquarium_middle_3_asset{"asset/background/aquarium/glassTubeFG_3_TVOS.png"};
-	aquarium_middle_3.add_component<Sprite>(aquarium_middle_3_asset, Sprite::Data{
-																		 .sorting_in_layer = 4,
-																		 .order_in_layer = 4,
-																		 .size = vec2(0, 800),
-																	 });
+	aquarium_middle_3.add_component<Sprite>(aquarium_middle_3_asset,
+											Sprite::Data{
+												.sorting_in_layer = SORT_IN_LAY_BACKGROUND,
+												.order_in_layer = 4,
+												.size = vec2(0, GAME_HEIGHT),
+											});
 	begin_x += 400;
 
 	this->add_background(scn, begin_x - 200);
@@ -59,22 +65,24 @@ float AquariumSubScene::create(Scene & scn, float begin_x) {
 	GameObject aquarium_middle_4
 		= scn.new_object("aquarium_middle", "background", vec2(begin_x, 0));
 	Asset aquarium_middle_4_asset{"asset/background/aquarium/glassTubeFG_3_TVOS.png"};
-	aquarium_middle_4.add_component<Sprite>(aquarium_middle_4_asset, Sprite::Data{
-																		 .sorting_in_layer = 4,
-																		 .order_in_layer = 5,
-																		 .size = vec2(0, 800),
-																	 });
+	aquarium_middle_4.add_component<Sprite>(aquarium_middle_4_asset,
+											Sprite::Data{
+												.sorting_in_layer = SORT_IN_LAY_BACKGROUND,
+												.order_in_layer = 5,
+												.size = vec2(0, GAME_HEIGHT),
+											});
 	begin_x += 600;
 
 	this->add_background(scn, begin_x);
 
 	GameObject aquarium_end = scn.new_object("aquarium_end", "background", vec2(begin_x, 0));
 	Asset aquarium_end_asset{"asset/background/aquarium/glassTubeFG_2_TVOS.png"};
-	aquarium_end.add_component<Sprite>(aquarium_end_asset, Sprite::Data{
-															   .sorting_in_layer = 4,
-															   .order_in_layer = 1,
-															   .size = vec2(0, 800),
-														   });
+	aquarium_end.add_component<Sprite>(aquarium_end_asset,
+									   Sprite::Data{
+										   .sorting_in_layer = SORT_IN_LAY_BACKGROUND,
+										   .order_in_layer = 1,
+										   .size = vec2(0, GAME_HEIGHT),
+									   });
 	begin_x += 600;
 
 	return begin_x;
@@ -83,47 +91,53 @@ float AquariumSubScene::create(Scene & scn, float begin_x) {
 void AquariumSubScene::add_background(Scene & scn, float begin_x) {
 	GameObject bg_1 = scn.new_object("aquarium_bg_1", "aquarium_background", vec2(begin_x, 0));
 	Asset bg_1_1_asset{"asset/background/aquarium/AquariumBG1_1_TVOS.png"};
-	bg_1.add_component<Sprite>(bg_1_1_asset, Sprite::Data{
-												 .sorting_in_layer = 3,
-												 .order_in_layer = 2,
-												 .size = vec2(0, 400),
-												 .position_offset = vec2(-200, 100),
-											 });
+	bg_1.add_component<Sprite>(bg_1_1_asset,
+							   Sprite::Data{
+								   .sorting_in_layer = SORT_IN_LAY_BACK_BACKGROUND,
+								   .order_in_layer = 2,
+								   .size = vec2(0, 400),
+								   .position_offset = vec2(-200, 100),
+							   });
 	Asset bg_1_2_asset{"asset/background/aquarium/AquariumBG1_2_TVOS.png"};
-	bg_1.add_component<Sprite>(bg_1_2_asset, Sprite::Data{
-												 .sorting_in_layer = 3,
-												 .order_in_layer = 2,
-												 .size = vec2(0, 400),
-												 .position_offset = vec2(200, 100),
-											 });
+	bg_1.add_component<Sprite>(bg_1_2_asset,
+							   Sprite::Data{
+								   .sorting_in_layer = SORT_IN_LAY_BACK_BACKGROUND,
+								   .order_in_layer = 2,
+								   .size = vec2(0, 400),
+								   .position_offset = vec2(200, 100),
+							   });
 	GameObject bg_2 = scn.new_object("aquarium_bg_2", "aquarium_background", vec2(begin_x, 0));
 	Asset bg_2_1_asset{"asset/background/aquarium/AquariumBG2_1_TVOS.png"};
-	bg_2.add_component<Sprite>(bg_2_1_asset, Sprite::Data{
-												 .sorting_in_layer = 3,
-												 .order_in_layer = 1,
-												 .size = vec2(0, 400),
-												 .position_offset = vec2(200, -50),
-											 });
+	bg_2.add_component<Sprite>(bg_2_1_asset,
+							   Sprite::Data{
+								   .sorting_in_layer = SORT_IN_LAY_BACK_BACKGROUND,
+								   .order_in_layer = 1,
+								   .size = vec2(0, 400),
+								   .position_offset = vec2(200, -50),
+							   });
 	Asset bg_2_2_asset{"asset/background/aquarium/AquariumBG2_2_TVOS.png"};
-	bg_2.add_component<Sprite>(bg_2_2_asset, Sprite::Data{
-												 .sorting_in_layer = 3,
-												 .order_in_layer = 1,
-												 .size = vec2(0, 400),
-												 .position_offset = vec2(-200, -50),
-											 });
+	bg_2.add_component<Sprite>(bg_2_2_asset,
+							   Sprite::Data{
+								   .sorting_in_layer = SORT_IN_LAY_BACK_BACKGROUND,
+								   .order_in_layer = 1,
+								   .size = vec2(0, 400),
+								   .position_offset = vec2(-200, -50),
+							   });
 	GameObject bg_3 = scn.new_object("aquarium_bg_3", "aquarium_background", vec2(begin_x, 0));
 	Asset bg_3_1_asset{"asset/background/aquarium/AquariumBG3_1_TVOS.png"};
-	bg_3.add_component<Sprite>(bg_3_1_asset, Sprite::Data{
-												 .sorting_in_layer = 3,
-												 .order_in_layer = 0,
-												 .size = vec2(0, 400),
-												 .position_offset = vec2(200, -200),
-											 });
+	bg_3.add_component<Sprite>(bg_3_1_asset,
+							   Sprite::Data{
+								   .sorting_in_layer = SORT_IN_LAY_BACK_BACKGROUND,
+								   .order_in_layer = 0,
+								   .size = vec2(0, 400),
+								   .position_offset = vec2(200, -200),
+							   });
 	Asset bg_3_2_asset{"asset/background/aquarium/AquariumBG3_2_TVOS.png"};
-	bg_3.add_component<Sprite>(bg_3_2_asset, Sprite::Data{
-												 .sorting_in_layer = 3,
-												 .order_in_layer = 0,
-												 .size = vec2(0, 400),
-												 .position_offset = vec2(-200, -200),
-											 });
+	bg_3.add_component<Sprite>(bg_3_2_asset,
+							   Sprite::Data{
+								   .sorting_in_layer = SORT_IN_LAY_BACK_BACKGROUND,
+								   .order_in_layer = 0,
+								   .size = vec2(0, 400),
+								   .position_offset = vec2(-200, -200),
+							   });
 }
diff --git a/game/AquariumSubScene.h b/game/background/AquariumSubScene.h
index 2a188bc..2a188bc 100644
--- a/game/AquariumSubScene.h
+++ b/game/background/AquariumSubScene.h
diff --git a/game/BackgroundSubScene.cpp b/game/background/BackgroundSubScene.cpp
index 6fdc598..6fdc598 100644
--- a/game/BackgroundSubScene.cpp
+++ b/game/background/BackgroundSubScene.cpp
diff --git a/game/BackgroundSubScene.h b/game/background/BackgroundSubScene.h
index 06bdac4..06bdac4 100644
--- a/game/BackgroundSubScene.h
+++ b/game/background/BackgroundSubScene.h
diff --git a/game/ForestParallaxScript.cpp b/game/background/ForestParallaxScript.cpp
index 27e30eb..27e30eb 100644
--- a/game/ForestParallaxScript.cpp
+++ b/game/background/ForestParallaxScript.cpp
diff --git a/game/ForestParallaxScript.h b/game/background/ForestParallaxScript.h
index a65a684..a65a684 100644
--- a/game/ForestParallaxScript.h
+++ b/game/background/ForestParallaxScript.h
diff --git a/game/ForestSubScene.cpp b/game/background/ForestSubScene.cpp
index 810ef17..7eac53a 100644
--- a/game/ForestSubScene.cpp
+++ b/game/background/ForestSubScene.cpp
@@ -1,6 +1,8 @@
 #include "ForestSubScene.h"
 #include "ForestParallaxScript.h"
 
+#include "../Config.h"
+
 #include <crepe/api/Animator.h>
 #include <crepe/api/BehaviorScript.h>
 #include <crepe/api/GameObject.h>
@@ -22,9 +24,9 @@ float ForestSubScene::create(Scene & scn, float begin_x, std::string unique_bg_n
 	GameObject begin = scn.new_object("forest_begin", "background", vec2(begin_x, 0));
 	Asset begin_asset{"asset/background/forest/forestFG_1_TVOS.png"};
 	begin.add_component<Sprite>(begin_asset, Sprite::Data{
-												 .sorting_in_layer = 4,
+												 .sorting_in_layer = SORT_IN_LAY_BACKGROUND,
 												 .order_in_layer = 0,
-												 .size = vec2(0, 800),
+												 .size = vec2(0, GAME_HEIGHT),
 											 });
 	begin_x += 800;
 
@@ -32,22 +34,24 @@ float ForestSubScene::create(Scene & scn, float begin_x, std::string unique_bg_n
 
 	GameObject middle_1 = scn.new_object("forest_middle", "background", vec2(begin_x, 0));
 	Asset middle_1_asset{"asset/background/forest/forestFG_3_TVOS.png"};
-	middle_1.add_component<Sprite>(middle_1_asset, Sprite::Data{
-													   .sorting_in_layer = 4,
-													   .order_in_layer = 2,
-													   .size = vec2(0, 800),
-												   });
+	middle_1.add_component<Sprite>(middle_1_asset,
+								   Sprite::Data{
+									   .sorting_in_layer = SORT_IN_LAY_BACKGROUND,
+									   .order_in_layer = 2,
+									   .size = vec2(0, GAME_HEIGHT),
+								   });
 	begin_x += 800;
 
 	this->add_background(scn, begin_x, unique_bg_name);
 
 	GameObject middle_2 = scn.new_object("forest_middle", "background", vec2(begin_x, 0));
 	Asset middle_2_asset{"asset/background/forest/forestFG_3_TVOS.png"};
-	middle_2.add_component<Sprite>(middle_2_asset, Sprite::Data{
-													   .sorting_in_layer = 4,
-													   .order_in_layer = 3,
-													   .size = vec2(0, 800),
-												   });
+	middle_2.add_component<Sprite>(middle_2_asset,
+								   Sprite::Data{
+									   .sorting_in_layer = SORT_IN_LAY_BACKGROUND,
+									   .order_in_layer = 3,
+									   .size = vec2(0, GAME_HEIGHT),
+								   });
 	begin_x += 800;
 
 	this->add_background(scn, begin_x, unique_bg_name);
@@ -55,9 +59,9 @@ float ForestSubScene::create(Scene & scn, float begin_x, std::string unique_bg_n
 	GameObject end = scn.new_object("forest_end", "background", vec2(begin_x, 0));
 	Asset end_asset{"asset/background/forest/forestFG_2_TVOS.png"};
 	end.add_component<Sprite>(end_asset, Sprite::Data{
-											 .sorting_in_layer = 4,
+											 .sorting_in_layer = SORT_IN_LAY_BACKGROUND,
 											 .order_in_layer = 1,
-											 .size = vec2(0, 800),
+											 .size = vec2(0, GAME_HEIGHT),
 										 });
 	begin_x += 600;
 
@@ -71,56 +75,62 @@ void ForestSubScene::add_background(Scene & scn, float begin_x, std::string name
 		= scn.new_object("forest_bg_1_" + name, "forest_background", vec2(begin_x, 0));
 	Asset bg_1_asset{"asset/background/forest/forestBG1_1_TVOS.png"};
 	bg_1.add_component<Sprite>(bg_1_asset, Sprite::Data{
-											   .sorting_in_layer = 3,
+											   .sorting_in_layer = SORT_IN_LAY_BACK_BACKGROUND,
 											   .order_in_layer = 2,
 											   .size = vec2(0, 800),
 										   });
 	GameObject bg_2
 		= scn.new_object("forest_bg_2_" + name, "forest_background", vec2(begin_x, 0));
 	Asset bg_2_1_asset{"asset/background/forest/forestBG2_1_TVOS.png"};
-	bg_2.add_component<Sprite>(bg_2_1_asset, Sprite::Data{
-												 .sorting_in_layer = 3,
-												 .order_in_layer = 1,
-												 .size = vec2(0, 400),
-												 .position_offset = vec2(200, 0),
-											 });
+	bg_2.add_component<Sprite>(bg_2_1_asset,
+							   Sprite::Data{
+								   .sorting_in_layer = SORT_IN_LAY_BACK_BACKGROUND,
+								   .order_in_layer = 1,
+								   .size = vec2(0, 400),
+								   .position_offset = vec2(200, 0),
+							   });
 	Asset bg_2_2_asset{"asset/background/forest/forestBG2_2_TVOS.png"};
-	bg_2.add_component<Sprite>(bg_2_2_asset, Sprite::Data{
-												 .sorting_in_layer = 3,
-												 .order_in_layer = 1,
-												 .size = vec2(0, 400),
-												 .position_offset = vec2(-200, 0),
-											 });
+	bg_2.add_component<Sprite>(bg_2_2_asset,
+							   Sprite::Data{
+								   .sorting_in_layer = SORT_IN_LAY_BACK_BACKGROUND,
+								   .order_in_layer = 1,
+								   .size = vec2(0, 400),
+								   .position_offset = vec2(-200, 0),
+							   });
 	GameObject bg_3
 		= scn.new_object("forest_bg_3_" + name, "forest_background", vec2(begin_x, 0));
 	Asset bg_3_1_asset{"asset/background/forest/forestBG3_1_TVOS.png"};
-	bg_3.add_component<Sprite>(bg_3_1_asset, Sprite::Data{
-												 .sorting_in_layer = 3,
-												 .order_in_layer = 0,
-												 .size = vec2(0, 200),
-												 .position_offset = vec2(300, 0),
-											 });
+	bg_3.add_component<Sprite>(bg_3_1_asset,
+							   Sprite::Data{
+								   .sorting_in_layer = SORT_IN_LAY_BACK_BACKGROUND,
+								   .order_in_layer = 0,
+								   .size = vec2(0, 200),
+								   .position_offset = vec2(300, 0),
+							   });
 	Asset bg_3_2_asset{"asset/background/forest/forestBG3_2_TVOS.png"};
-	bg_3.add_component<Sprite>(bg_3_2_asset, Sprite::Data{
-												 .sorting_in_layer = 3,
-												 .order_in_layer = 0,
-												 .size = vec2(0, 200),
-												 .position_offset = vec2(100, 0),
-											 });
+	bg_3.add_component<Sprite>(bg_3_2_asset,
+							   Sprite::Data{
+								   .sorting_in_layer = SORT_IN_LAY_BACK_BACKGROUND,
+								   .order_in_layer = 0,
+								   .size = vec2(0, 200),
+								   .position_offset = vec2(100, 0),
+							   });
 	Asset bg_3_3_asset{"asset/background/forest/forestBG3_3_TVOS.png"};
-	bg_3.add_component<Sprite>(bg_3_3_asset, Sprite::Data{
-												 .sorting_in_layer = 3,
-												 .order_in_layer = 0,
-												 .size = vec2(0, 200),
-												 .position_offset = vec2(-100, 0),
-											 });
+	bg_3.add_component<Sprite>(bg_3_3_asset,
+							   Sprite::Data{
+								   .sorting_in_layer = SORT_IN_LAY_BACK_BACKGROUND,
+								   .order_in_layer = 0,
+								   .size = vec2(0, 200),
+								   .position_offset = vec2(-100, 0),
+							   });
 	Asset bg_3_4_asset{"asset/background/forest/forestBG3_4_TVOS.png"};
-	bg_3.add_component<Sprite>(bg_3_4_asset, Sprite::Data{
-												 .sorting_in_layer = 3,
-												 .order_in_layer = 0,
-												 .size = vec2(0, 200),
-												 .position_offset = vec2(-300, 0),
-											 });
+	bg_3.add_component<Sprite>(bg_3_4_asset,
+							   Sprite::Data{
+								   .sorting_in_layer = SORT_IN_LAY_BACK_BACKGROUND,
+								   .order_in_layer = 0,
+								   .size = vec2(0, 200),
+								   .position_offset = vec2(-300, 0),
+							   });
 
 	bg_2.add_component<Rigidbody>(Rigidbody::Data{
 		.linear_velocity = vec2(30, 0),
diff --git a/game/ForestSubScene.h b/game/background/ForestSubScene.h
index 0a04001..0a04001 100644
--- a/game/ForestSubScene.h
+++ b/game/background/ForestSubScene.h
diff --git a/game/HallwaySubScene.cpp b/game/background/HallwaySubScene.cpp
index 486b8c6..2aa9bab 100644
--- a/game/HallwaySubScene.cpp
+++ b/game/background/HallwaySubScene.cpp
@@ -1,5 +1,7 @@
 #include "HallwaySubScene.h"
 
+#include "../Config.h"
+
 #include <crepe/api/Animator.h>
 #include <crepe/api/Color.h>
 #include <crepe/api/GameObject.h>
@@ -14,9 +16,9 @@ float HallwaySubScene::create(Scene & scn, float begin_x, unsigned int sector_nu
 	GameObject begin = scn.new_object("hallway_begin", "background", vec2(begin_x, 0));
 	Asset begin_asset{"asset/background/hallway/hallway1FG_1_TVOS.png"};
 	begin.add_component<Sprite>(begin_asset, Sprite::Data{
-												 .sorting_in_layer = 4,
+												 .sorting_in_layer = SORT_IN_LAY_BACKGROUND,
 												 .order_in_layer = 0,
-												 .size = vec2(0, 800),
+												 .size = vec2(0, GAME_HEIGHT),
 											 });
 	begin_x += 600;
 
@@ -26,48 +28,52 @@ float HallwaySubScene::create(Scene & scn, float begin_x, unsigned int sector_nu
 
 	GameObject middle_1 = scn.new_object("hallway_middle", "background", vec2(begin_x, 0));
 	Asset middle_asset{"asset/background/hallway/hallway1FG_2_TVOS.png"};
-	middle_1.add_component<Sprite>(middle_asset, Sprite::Data{
-													 .sorting_in_layer = 4,
-													 .order_in_layer = 2,
-													 .size = vec2(0, 800),
-												 });
+	middle_1.add_component<Sprite>(middle_asset,
+								   Sprite::Data{
+									   .sorting_in_layer = SORT_IN_LAY_BACKGROUND,
+									   .order_in_layer = 2,
+									   .size = vec2(0, GAME_HEIGHT),
+								   });
 	begin_x += 600;
 
 	GameObject middle_2 = scn.new_object("hallway_middle", "background", vec2(begin_x, 0));
 	Asset middle_asset_2{"asset/background/hallway/hallway1FG_2_TVOS.png"};
-	middle_2.add_component<Sprite>(middle_asset_2, Sprite::Data{
-													   .sorting_in_layer = 4,
-													   .order_in_layer = 3,
-													   .size = vec2(0, 800),
-												   });
+	middle_2.add_component<Sprite>(middle_asset_2,
+								   Sprite::Data{
+									   .sorting_in_layer = SORT_IN_LAY_BACKGROUND,
+									   .order_in_layer = 3,
+									   .size = vec2(0, GAME_HEIGHT),
+								   });
 	begin_x += 200;
 
 	GameObject middle_3 = scn.new_object("hallway_middle", "background", vec2(begin_x, 0));
 	Asset middle_asset_3{"asset/background/hallway/hallway1FG_2_TVOS.png"};
-	middle_3.add_component<Sprite>(middle_asset_3, Sprite::Data{
-													   .sorting_in_layer = 4,
-													   .order_in_layer = 4,
-													   .size = vec2(0, 800),
-												   });
+	middle_3.add_component<Sprite>(middle_asset_3,
+								   Sprite::Data{
+									   .sorting_in_layer = SORT_IN_LAY_BACKGROUND,
+									   .order_in_layer = 4,
+									   .size = vec2(0, GAME_HEIGHT),
+								   });
 	begin_x += 400;
 
 	this->add_lamp(middle_3, vec2(0, -120));
 
 	GameObject middle_4 = scn.new_object("hallway_middle", "background", vec2(begin_x, 0));
 	Asset middle_asset_4{"asset/background/hallway/hallway1FG_2_TVOS.png"};
-	middle_4.add_component<Sprite>(middle_asset_4, Sprite::Data{
-													   .sorting_in_layer = 4,
-													   .order_in_layer = 5,
-													   .size = vec2(0, 800),
-												   });
+	middle_4.add_component<Sprite>(middle_asset_4,
+								   Sprite::Data{
+									   .sorting_in_layer = SORT_IN_LAY_BACKGROUND,
+									   .order_in_layer = 5,
+									   .size = vec2(0, GAME_HEIGHT),
+								   });
 	begin_x += 600;
 
 	GameObject end = scn.new_object("hallway_end", "background", vec2(begin_x, 0));
 	Asset end_asset{"asset/background/hallway/hallway1FG_1_TVOS.png"};
 	end.add_component<Sprite>(end_asset, Sprite::Data{
-											 .sorting_in_layer = 4,
+											 .sorting_in_layer = SORT_IN_LAY_BACKGROUND,
 											 .order_in_layer = 1,
-											 .size = vec2(0, 800),
+											 .size = vec2(0, GAME_HEIGHT),
 										 });
 	begin_x += 600;
 
@@ -77,7 +83,7 @@ float HallwaySubScene::create(Scene & scn, float begin_x, unsigned int sector_nu
 void HallwaySubScene::add_lamp(GameObject & obj, vec2 offset, unsigned int fps) {
 	Asset lamp_asset{"asset/background/hallway/alarmLight_TVOS.png"};
 	obj.add_component<Sprite>(lamp_asset, Sprite::Data{
-											  .sorting_in_layer = 5,
+											  .sorting_in_layer = SORT_IN_LAY_FORE_BACKGROUND,
 											  .order_in_layer = 0,
 											  .size = vec2(0, 100),
 											  .position_offset = offset,
@@ -85,7 +91,7 @@ void HallwaySubScene::add_lamp(GameObject & obj, vec2 offset, unsigned int fps)
 	Asset lamp_glow_asset{"asset/background/hallway/alarmGlow_TVOS.png"};
 	Sprite & lamp_glow_sprite = obj.add_component<Sprite>(
 		lamp_glow_asset, Sprite::Data{
-							 .sorting_in_layer = 5,
+							 .sorting_in_layer = SORT_IN_LAY_FORE_BACKGROUND,
 							 .order_in_layer = 1,
 							 .size = vec2(0, 300),
 							 .position_offset = offset - vec2(65, -30),
@@ -100,18 +106,19 @@ void HallwaySubScene::add_lamp(GameObject & obj, vec2 offset, unsigned int fps)
 void HallwaySubScene::add_sector_number(GameObject & obj, vec2 offset, unsigned int sector_num,
 										Color sector_color) {
 	Asset sector_text_asset{"asset/background/hallway/sectorText_TVOS.png"};
-	obj.add_component<Sprite>(sector_text_asset, Sprite::Data{
-													 .color = sector_color,
-													 .sorting_in_layer = 5,
-													 .order_in_layer = 0,
-													 .size = vec2(0, 100),
-													 .position_offset = offset,
-												 });
+	obj.add_component<Sprite>(sector_text_asset,
+							  Sprite::Data{
+								  .color = sector_color,
+								  .sorting_in_layer = SORT_IN_LAY_FORE_BACKGROUND,
+								  .order_in_layer = 0,
+								  .size = vec2(0, 100),
+								  .position_offset = offset,
+							  });
 	Asset sector_num_asset{"asset/background/hallway/sectorNumbers_TVOS.png"};
 	Sprite & sector_num_sprite = obj.add_component<Sprite>(
 		sector_num_asset, Sprite::Data{
 							  .color = sector_color,
-							  .sorting_in_layer = 5,
+							  .sorting_in_layer = SORT_IN_LAY_FORE_BACKGROUND,
 							  .order_in_layer = 0,
 							  .size = vec2(0, 100),
 							  .position_offset = offset + vec2(200, 0),
diff --git a/game/HallwaySubScene.h b/game/background/HallwaySubScene.h
index acc9329..acc9329 100644
--- a/game/HallwaySubScene.h
+++ b/game/background/HallwaySubScene.h
diff --git a/game/StartSubScene.cpp b/game/background/StartSubScene.cpp
index 5d810c2..a918c05 100644
--- a/game/StartSubScene.cpp
+++ b/game/background/StartSubScene.cpp
@@ -1,5 +1,7 @@
 #include "StartSubScene.h"
 
+#include "../Config.h"
+
 #include <crepe/api/Animator.h>
 #include <crepe/api/CircleCollider.h>
 #include <crepe/api/Color.h>
@@ -18,17 +20,18 @@ float StartSubScene::create(Scene & scn, float begin_x) {
 	GameObject begin = scn.new_object("start_begin", "background", vec2(begin_x, 0));
 	Asset begin_asset{"asset/background/start/titleFG_1_TVOS.png"};
 	begin.add_component<Sprite>(begin_asset, Sprite::Data{
-												 .sorting_in_layer = 4,
+												 .sorting_in_layer = SORT_IN_LAY_BACKGROUND,
 												 .order_in_layer = 0,
-												 .size = vec2(0, 800),
+												 .size = vec2(0, GAME_HEIGHT),
 											 });
 	GameObject hole = scn.new_object("start_hole", "background", vec2(begin_x - 250, 140));
 	Asset hole_asset{"asset/background/start/titleWallHole.png"};
-	Sprite & hole_sprite = hole.add_component<Sprite>(hole_asset, Sprite::Data{
-																	  .sorting_in_layer = 4,
-																	  .order_in_layer = 1,
-																	  .size = vec2(0, 200),
-																  });
+	Sprite & hole_sprite = hole.add_component<Sprite>(
+		hole_asset, Sprite::Data{
+						.sorting_in_layer = SORT_IN_LAY_BACKGROUND,
+						.order_in_layer = 1,
+						.size = vec2(0, 200),
+					});
 	hole_sprite.active = false;
 	begin_x += 700;
 
@@ -39,9 +42,9 @@ float StartSubScene::create(Scene & scn, float begin_x) {
 	GameObject end = scn.new_object("start_end", "background", vec2(begin_x, 0));
 	Asset end_asset{"asset/background/start/titleFG_2_TVOS.png"};
 	end.add_component<Sprite>(end_asset, Sprite::Data{
-											 .sorting_in_layer = 4,
+											 .sorting_in_layer = SORT_IN_LAY_BACKGROUND,
 											 .order_in_layer = 1,
-											 .size = vec2(0, 800),
+											 .size = vec2(0, GAME_HEIGHT),
 										 });
 	begin_x += 100;
 
@@ -53,7 +56,7 @@ float StartSubScene::create(Scene & scn, float begin_x) {
 void StartSubScene::add_lamp(GameObject & obj, vec2 offset, unsigned int fps) {
 	Asset lamp_asset{"asset/background/start/alarmLight_TVOS.png"};
 	obj.add_component<Sprite>(lamp_asset, Sprite::Data{
-											  .sorting_in_layer = 5,
+											  .sorting_in_layer = SORT_IN_LAY_FORE_BACKGROUND,
 											  .order_in_layer = 0,
 											  .size = vec2(0, 100),
 											  .position_offset = offset,
@@ -61,7 +64,7 @@ void StartSubScene::add_lamp(GameObject & obj, vec2 offset, unsigned int fps) {
 	Asset lamp_glow_asset{"asset/background/start/alarmGlow_TVOS.png"};
 	Sprite & lamp_glow_sprite = obj.add_component<Sprite>(
 		lamp_glow_asset, Sprite::Data{
-							 .sorting_in_layer = 5,
+							 .sorting_in_layer = SORT_IN_LAY_FORE_BACKGROUND,
 							 .order_in_layer = 1,
 							 .size = vec2(0, 300),
 							 .position_offset = offset - vec2(65, -55),
@@ -77,7 +80,7 @@ void StartSubScene::add_lamp(GameObject & obj, vec2 offset, unsigned int fps) {
 void StartSubScene::add_table(GameObject & obj, vec2 offset) {
 	Asset table_asset{"asset/background/start/table.png"};
 	obj.add_component<Sprite>(table_asset, Sprite::Data{
-											   .sorting_in_layer = 5,
+											   .sorting_in_layer = SORT_IN_LAY_FORE_BACKGROUND,
 											   .order_in_layer = 0,
 											   .size = vec2(0, 100),
 											   .position_offset = offset,
@@ -85,7 +88,7 @@ void StartSubScene::add_table(GameObject & obj, vec2 offset) {
 	Asset gramophone_asset{"asset/background/start/gramophone_TVOS.png"};
 	Sprite & gramophone_sprite = obj.add_component<Sprite>(
 		gramophone_asset, Sprite::Data{
-							  .sorting_in_layer = 5,
+							  .sorting_in_layer = SORT_IN_LAY_FORE_BACKGROUND,
 							  .order_in_layer = 1,
 							  .size = vec2(0, 100),
 							  .position_offset = offset + vec2(0, -50),
@@ -100,36 +103,38 @@ void StartSubScene::add_table(GameObject & obj, vec2 offset) {
 void StartSubScene::add_light(crepe::GameObject & obj, crepe::vec2 offset) {
 	Asset light_asset{"asset/background/start/title_light_TVOS.png"};
 	obj.add_component<Sprite>(light_asset, Sprite::Data{
-											   .sorting_in_layer = 5,
+											   .sorting_in_layer = SORT_IN_LAY_FORE_BACKGROUND,
 											   .order_in_layer = 0,
 											   .size = vec2(0, 200),
 											   .position_offset = offset,
 										   });
 	Asset light_glow_asset{"asset/background/start/lightEffect2.png"};
-	obj.add_component<Sprite>(light_glow_asset, Sprite::Data{
-													.sorting_in_layer = 5,
-													.order_in_layer = 1,
-													.size = vec2(0, 100),
-													.position_offset = offset + vec2(0, 75),
-												});
+	obj.add_component<Sprite>(light_glow_asset,
+							  Sprite::Data{
+								  .sorting_in_layer = SORT_IN_LAY_FORE_BACKGROUND,
+								  .order_in_layer = 1,
+								  .size = vec2(0, 100),
+								  .position_offset = offset + vec2(0, 75),
+							  });
 	Asset light_effect_asset{"asset/background/start/lightEffect.png"};
-	obj.add_component<Sprite>(light_effect_asset, Sprite::Data{
-													  .sorting_in_layer = 5,
-													  .order_in_layer = 0,
-													  .size = vec2(0, 100),
-													  .position_offset = offset + vec2(0, 350),
-												  });
+	obj.add_component<Sprite>(light_effect_asset,
+							  Sprite::Data{
+								  .sorting_in_layer = SORT_IN_LAY_FORE_BACKGROUND,
+								  .order_in_layer = 0,
+								  .size = vec2(0, 100),
+								  .position_offset = offset + vec2(0, 350),
+							  });
 }
 
 void StartSubScene::add_jetpack_stand(crepe::GameObject & obj, crepe::vec2 offset) {
 	Asset jetpack_stand_asset{"asset/background/start/JetpackStand.png"};
-	Sprite & jetpeck_stand_sprite
-		= obj.add_component<Sprite>(jetpack_stand_asset, Sprite::Data{
-															 .sorting_in_layer = 5,
-															 .order_in_layer = 1,
-															 .size = vec2(0, 70),
-															 .position_offset = offset,
-														 });
+	Sprite & jetpeck_stand_sprite = obj.add_component<Sprite>(
+		jetpack_stand_asset, Sprite::Data{
+								 .sorting_in_layer = SORT_IN_LAY_FORE_BACKGROUND,
+								 .order_in_layer = 1,
+								 .size = vec2(0, 70),
+								 .position_offset = offset,
+							 });
 	obj.add_component<Animator>(jetpeck_stand_sprite, ivec2(34, 46), uvec2(2, 1),
 								Animator::Data{
 									.fps = 10,
@@ -137,23 +142,24 @@ void StartSubScene::add_jetpack_stand(crepe::GameObject & obj, crepe::vec2 offse
 								})
 		.pause();
 	Asset do_not_steal = {"asset/background/start/doNotTouchSign_TVOS.png"};
-	obj.add_component<Sprite>(do_not_steal, Sprite::Data{
-												.sorting_in_layer = 5,
-												.order_in_layer = 1,
-												.size = vec2(0, 100),
-												.position_offset = offset + vec2(-75, -25),
-											});
+	obj.add_component<Sprite>(do_not_steal,
+							  Sprite::Data{
+								  .sorting_in_layer = SORT_IN_LAY_FORE_BACKGROUND,
+								  .order_in_layer = 1,
+								  .size = vec2(0, 100),
+								  .position_offset = offset + vec2(-75, -25),
+							  });
 }
 
 void StartSubScene::create_wall_fragments(crepe::Scene & scn, float begin_x) {
 	GameObject frag_1 = scn.new_object("frag_1", "wall_fragment", vec2(begin_x, 200));
 	Asset frag_1_asset{"asset/background/start/StartWall_frag1.png"};
-	Sprite & frag_1_sprite
-		= frag_1.add_component<Sprite>(frag_1_asset, Sprite::Data{
-														 .sorting_in_layer = 5,
-														 .order_in_layer = 5,
-														 .size = vec2(0, 50),
-													 });
+	Sprite & frag_1_sprite = frag_1.add_component<Sprite>(
+		frag_1_asset, Sprite::Data{
+						  .sorting_in_layer = SORT_IN_LAY_FORE_BACKGROUND,
+						  .order_in_layer = 5,
+						  .size = vec2(0, 50),
+					  });
 	frag_1_sprite.active = false;
 	Rigidbody & frag_1_rb = frag_1.add_component<Rigidbody>(Rigidbody::Data{
 		.gravity_scale = 10,
@@ -162,19 +168,20 @@ void StartSubScene::create_wall_fragments(crepe::Scene & scn, float begin_x) {
 		.angular_velocity = 500,
 		.angular_velocity_coefficient = 0.55,
 		.elasticity_coefficient = 0.5,
-		.collision_layer = 5,
+		.collision_layers = {COLL_LAY_BOT_TOP},
+		.collision_layer = COLL_LAY_WALL_FRAGS,
 	});
 	frag_1_rb.active = false;
 	frag_1.add_component<CircleCollider>(25);
 
 	GameObject frag_2 = scn.new_object("frag_2", "wall_fragment", vec2(begin_x, 180));
 	Asset frag_2_asset{"asset/background/start/StartWall_frag2.png"};
-	Sprite & frag_2_sprite
-		= frag_2.add_component<Sprite>(frag_2_asset, Sprite::Data{
-														 .sorting_in_layer = 5,
-														 .order_in_layer = 5,
-														 .size = vec2(0, 50),
-													 });
+	Sprite & frag_2_sprite = frag_2.add_component<Sprite>(
+		frag_2_asset, Sprite::Data{
+						  .sorting_in_layer = SORT_IN_LAY_FORE_BACKGROUND,
+						  .order_in_layer = 5,
+						  .size = vec2(0, 50),
+					  });
 	frag_2_sprite.active = false;
 	Rigidbody & frag_2_rb = frag_2.add_component<Rigidbody>(Rigidbody::Data{
 		.gravity_scale = 20,
@@ -183,19 +190,20 @@ void StartSubScene::create_wall_fragments(crepe::Scene & scn, float begin_x) {
 		.angular_velocity = 400,
 		.angular_velocity_coefficient = 0.55,
 		.elasticity_coefficient = 0.5,
-		.collision_layer = 5,
+		.collision_layers = {COLL_LAY_BOT_TOP},
+		.collision_layer = COLL_LAY_WALL_FRAGS,
 	});
 	frag_2_rb.active = false;
 	frag_2.add_component<CircleCollider>(55);
 
 	GameObject frag_3 = scn.new_object("frag_3", "wall_fragment", vec2(begin_x, 170));
 	Asset frag_3_asset{"asset/background/start/StartWall_frag3.png"};
-	Sprite & frag_3_sprite
-		= frag_3.add_component<Sprite>(frag_3_asset, Sprite::Data{
-														 .sorting_in_layer = 5,
-														 .order_in_layer = 5,
-														 .size = vec2(0, 50),
-													 });
+	Sprite & frag_3_sprite = frag_3.add_component<Sprite>(
+		frag_3_asset, Sprite::Data{
+						  .sorting_in_layer = SORT_IN_LAY_FORE_BACKGROUND,
+						  .order_in_layer = 5,
+						  .size = vec2(0, 50),
+					  });
 	frag_3_sprite.active = false;
 	Rigidbody & frag_3_rb = frag_3.add_component<Rigidbody>(Rigidbody::Data{
 		.gravity_scale = 30,
@@ -204,19 +212,20 @@ void StartSubScene::create_wall_fragments(crepe::Scene & scn, float begin_x) {
 		.angular_velocity = 300,
 		.angular_velocity_coefficient = 0.55,
 		.elasticity_coefficient = 0.5,
-		.collision_layer = 5,
+		.collision_layers = {COLL_LAY_BOT_TOP},
+		.collision_layer = COLL_LAY_WALL_FRAGS,
 	});
 	frag_3_rb.active = false;
 	frag_3.add_component<CircleCollider>(35);
 
 	GameObject frag_4 = scn.new_object("frag_4", "wall_fragment", vec2(begin_x, 160));
 	Asset frag_4_asset{"asset/background/start/StartWall_frag4.png"};
-	Sprite & frag_4_sprite
-		= frag_4.add_component<Sprite>(frag_4_asset, Sprite::Data{
-														 .sorting_in_layer = 5,
-														 .order_in_layer = 5,
-														 .size = vec2(0, 50),
-													 });
+	Sprite & frag_4_sprite = frag_4.add_component<Sprite>(
+		frag_4_asset, Sprite::Data{
+						  .sorting_in_layer = SORT_IN_LAY_FORE_BACKGROUND,
+						  .order_in_layer = 5,
+						  .size = vec2(0, 50),
+					  });
 	frag_4_sprite.active = false;
 	Rigidbody & frag_4_rb = frag_4.add_component<Rigidbody>(Rigidbody::Data{
 		.gravity_scale = 40,
@@ -225,19 +234,20 @@ void StartSubScene::create_wall_fragments(crepe::Scene & scn, float begin_x) {
 		.angular_velocity = 200,
 		.angular_velocity_coefficient = 0.55,
 		.elasticity_coefficient = 0.5,
-		.collision_layer = 5,
+		.collision_layers = {COLL_LAY_BOT_TOP},
+		.collision_layer = COLL_LAY_WALL_FRAGS,
 	});
 	frag_4_rb.active = false;
 	frag_4.add_component<CircleCollider>(60);
 
 	GameObject frag_5 = scn.new_object("frag_5", "wall_fragment", vec2(begin_x, 150));
 	Asset frag_5_asset{"asset/background/start/StartWall_frag5.png"};
-	Sprite & frag_5_sprite
-		= frag_5.add_component<Sprite>(frag_5_asset, Sprite::Data{
-														 .sorting_in_layer = 5,
-														 .order_in_layer = 5,
-														 .size = vec2(0, 50),
-													 });
+	Sprite & frag_5_sprite = frag_5.add_component<Sprite>(
+		frag_5_asset, Sprite::Data{
+						  .sorting_in_layer = SORT_IN_LAY_FORE_BACKGROUND,
+						  .order_in_layer = 5,
+						  .size = vec2(0, 50),
+					  });
 	frag_5_sprite.active = false;
 	Rigidbody & frag_5_rb = frag_5.add_component<Rigidbody>(Rigidbody::Data{
 		.gravity_scale = 50,
@@ -246,19 +256,20 @@ void StartSubScene::create_wall_fragments(crepe::Scene & scn, float begin_x) {
 		.angular_velocity = 100,
 		.angular_velocity_coefficient = 0.55,
 		.elasticity_coefficient = 0.5,
-		.collision_layer = 5,
+		.collision_layers = {COLL_LAY_BOT_TOP},
+		.collision_layer = COLL_LAY_WALL_FRAGS,
 	});
 	frag_5_rb.active = false;
 	frag_5.add_component<CircleCollider>(5);
 
 	GameObject frag_6 = scn.new_object("frag_6", "wall_fragment", vec2(begin_x, 140));
 	Asset frag_6_asset{"asset/background/start/StartWall_frag6.png"};
-	Sprite & frag_6_sprite
-		= frag_6.add_component<Sprite>(frag_6_asset, Sprite::Data{
-														 .sorting_in_layer = 5,
-														 .order_in_layer = 5,
-														 .size = vec2(0, 50),
-													 });
+	Sprite & frag_6_sprite = frag_6.add_component<Sprite>(
+		frag_6_asset, Sprite::Data{
+						  .sorting_in_layer = SORT_IN_LAY_FORE_BACKGROUND,
+						  .order_in_layer = 5,
+						  .size = vec2(0, 50),
+					  });
 	frag_6_sprite.active = false;
 	Rigidbody & frag_6_rb = frag_6.add_component<Rigidbody>(Rigidbody::Data{
 		.gravity_scale = 30,
@@ -267,19 +278,20 @@ void StartSubScene::create_wall_fragments(crepe::Scene & scn, float begin_x) {
 		.angular_velocity = 100,
 		.angular_velocity_coefficient = 0.55,
 		.elasticity_coefficient = 0.5,
-		.collision_layer = 5,
+		.collision_layers = {COLL_LAY_BOT_TOP},
+		.collision_layer = COLL_LAY_WALL_FRAGS,
 	});
 	frag_6_rb.active = false;
 	frag_6.add_component<CircleCollider>(30);
 
 	GameObject frag_7 = scn.new_object("frag_7", "wall_fragment", vec2(begin_x, 130));
 	Asset frag_7_asset{"asset/background/start/StartWall_frag7.png"};
-	Sprite & frag_7_sprite
-		= frag_7.add_component<Sprite>(frag_7_asset, Sprite::Data{
-														 .sorting_in_layer = 5,
-														 .order_in_layer = 5,
-														 .size = vec2(0, 50),
-													 });
+	Sprite & frag_7_sprite = frag_7.add_component<Sprite>(
+		frag_7_asset, Sprite::Data{
+						  .sorting_in_layer = SORT_IN_LAY_FORE_BACKGROUND,
+						  .order_in_layer = 5,
+						  .size = vec2(0, 50),
+					  });
 	frag_7_sprite.active = false;
 	Rigidbody & frag_7_rb = frag_7.add_component<Rigidbody>(Rigidbody::Data{
 		.gravity_scale = 20,
@@ -288,19 +300,20 @@ void StartSubScene::create_wall_fragments(crepe::Scene & scn, float begin_x) {
 		.angular_velocity = 800,
 		.angular_velocity_coefficient = 0.55,
 		.elasticity_coefficient = 0.5,
-		.collision_layer = 5,
+		.collision_layers = {COLL_LAY_BOT_TOP},
+		.collision_layer = COLL_LAY_WALL_FRAGS,
 	});
 	frag_7_rb.active = false;
 	frag_7.add_component<CircleCollider>(45);
 
 	GameObject frag_8 = scn.new_object("frag_8", "wall_fragment", vec2(begin_x, 120));
 	Asset frag_8_asset{"asset/background/start/StartWall_frag8.png"};
-	Sprite & frag_8_sprite
-		= frag_8.add_component<Sprite>(frag_8_asset, Sprite::Data{
-														 .sorting_in_layer = 5,
-														 .order_in_layer = 5,
-														 .size = vec2(0, 50),
-													 });
+	Sprite & frag_8_sprite = frag_8.add_component<Sprite>(
+		frag_8_asset, Sprite::Data{
+						  .sorting_in_layer = SORT_IN_LAY_FORE_BACKGROUND,
+						  .order_in_layer = 5,
+						  .size = vec2(0, 50),
+					  });
 	frag_8_sprite.active = false;
 	Rigidbody & frag_8_rb = frag_8.add_component<Rigidbody>(Rigidbody::Data{
 		.gravity_scale = 30,
@@ -309,19 +322,20 @@ void StartSubScene::create_wall_fragments(crepe::Scene & scn, float begin_x) {
 		.angular_velocity = 500,
 		.angular_velocity_coefficient = 0.55,
 		.elasticity_coefficient = 0.5,
-		.collision_layer = 5,
+		.collision_layers = {COLL_LAY_BOT_TOP},
+		.collision_layer = COLL_LAY_WALL_FRAGS,
 	});
 	frag_8_rb.active = false;
 	frag_8.add_component<CircleCollider>(25);
 
 	GameObject frag_9 = scn.new_object("frag_9", "wall_fragment", vec2(begin_x, 110));
 	Asset frag_9_asset{"asset/background/start/StartWall_frag9.png"};
-	Sprite & frag_9_sprite
-		= frag_9.add_component<Sprite>(frag_9_asset, Sprite::Data{
-														 .sorting_in_layer = 5,
-														 .order_in_layer = 5,
-														 .size = vec2(0, 50),
-													 });
+	Sprite & frag_9_sprite = frag_9.add_component<Sprite>(
+		frag_9_asset, Sprite::Data{
+						  .sorting_in_layer = SORT_IN_LAY_FORE_BACKGROUND,
+						  .order_in_layer = 5,
+						  .size = vec2(0, 50),
+					  });
 	frag_9_sprite.active = false;
 	Rigidbody & frag_9_rb = frag_9.add_component<Rigidbody>(Rigidbody::Data{
 		.gravity_scale = 40,
@@ -330,19 +344,20 @@ void StartSubScene::create_wall_fragments(crepe::Scene & scn, float begin_x) {
 		.angular_velocity = 500,
 		.angular_velocity_coefficient = 0.55,
 		.elasticity_coefficient = 0.5,
-		.collision_layer = 5,
+		.collision_layers = {COLL_LAY_BOT_TOP},
+		.collision_layer = COLL_LAY_WALL_FRAGS,
 	});
 	frag_9_rb.active = false;
 	frag_9.add_component<CircleCollider>(15);
 
 	GameObject frag_10 = scn.new_object("frag_10", "wall_fragment", vec2(begin_x, 100));
 	Asset frag_10_asset{"asset/background/start/StartWall_frag10.png"};
-	Sprite & frag_10_sprite
-		= frag_10.add_component<Sprite>(frag_10_asset, Sprite::Data{
-														   .sorting_in_layer = 5,
-														   .order_in_layer = 5,
-														   .size = vec2(0, 50),
-													   });
+	Sprite & frag_10_sprite = frag_10.add_component<Sprite>(
+		frag_10_asset, Sprite::Data{
+						   .sorting_in_layer = SORT_IN_LAY_FORE_BACKGROUND,
+						   .order_in_layer = 5,
+						   .size = vec2(0, 50),
+					   });
 	frag_10_sprite.active = false;
 	Rigidbody & frag_10_rb = frag_10.add_component<Rigidbody>(Rigidbody::Data{
 		.gravity_scale = 50,
@@ -351,19 +366,20 @@ void StartSubScene::create_wall_fragments(crepe::Scene & scn, float begin_x) {
 		.angular_velocity = 300,
 		.angular_velocity_coefficient = 0.55,
 		.elasticity_coefficient = 0.5,
-		.collision_layer = 5,
+		.collision_layers = {COLL_LAY_BOT_TOP},
+		.collision_layer = COLL_LAY_WALL_FRAGS,
 	});
 	frag_10_rb.active = false;
 	frag_10.add_component<CircleCollider>(60);
 
-	GameObject frag_11 = scn.new_object("frag_11", "wall_fragment", vec2(begin_x, 90));
+	GameObject frag_11 = scn.new_object("frag_11", "wall_fragment", vec2(begin_x, 70));
 	Asset frag_11_asset{"asset/background/start/StartWall_frag11.png"};
-	Sprite & frag_11_sprite
-		= frag_11.add_component<Sprite>(frag_11_asset, Sprite::Data{
-														   .sorting_in_layer = 5,
-														   .order_in_layer = 5,
-														   .size = vec2(0, 50),
-													   });
+	Sprite & frag_11_sprite = frag_11.add_component<Sprite>(
+		frag_11_asset, Sprite::Data{
+						   .sorting_in_layer = SORT_IN_LAY_FORE_BACKGROUND,
+						   .order_in_layer = 5,
+						   .size = vec2(0, 50),
+					   });
 	frag_11_sprite.active = false;
 	Rigidbody & frag_11_rb = frag_11.add_component<Rigidbody>(Rigidbody::Data{
 		.gravity_scale = 60,
@@ -372,19 +388,20 @@ void StartSubScene::create_wall_fragments(crepe::Scene & scn, float begin_x) {
 		.angular_velocity = 200,
 		.angular_velocity_coefficient = 0.55,
 		.elasticity_coefficient = 0.5,
-		.collision_layer = 5,
+		.collision_layers = {COLL_LAY_BOT_TOP},
+		.collision_layer = COLL_LAY_WALL_FRAGS,
 	});
 	frag_11_rb.active = false;
 	frag_11.add_component<CircleCollider>(5);
 
 	GameObject frag_12 = scn.new_object("frag_12", "wall_fragment", vec2(begin_x, 80));
 	Asset frag_12_asset{"asset/background/start/StartWall_frag12.png"};
-	Sprite & frag_12_sprite
-		= frag_12.add_component<Sprite>(frag_12_asset, Sprite::Data{
-														   .sorting_in_layer = 5,
-														   .order_in_layer = 5,
-														   .size = vec2(0, 50),
-													   });
+	Sprite & frag_12_sprite = frag_12.add_component<Sprite>(
+		frag_12_asset, Sprite::Data{
+						   .sorting_in_layer = SORT_IN_LAY_FORE_BACKGROUND,
+						   .order_in_layer = 5,
+						   .size = vec2(0, 50),
+					   });
 	frag_12_sprite.active = false;
 	Rigidbody & frag_12_rb = frag_12.add_component<Rigidbody>(Rigidbody::Data{
 		.gravity_scale = 70,
@@ -393,7 +410,8 @@ void StartSubScene::create_wall_fragments(crepe::Scene & scn, float begin_x) {
 		.angular_velocity = 100,
 		.angular_velocity_coefficient = 0.55,
 		.elasticity_coefficient = 0.5,
-		.collision_layer = 5,
+		.collision_layers = {COLL_LAY_BOT_TOP},
+		.collision_layer = COLL_LAY_WALL_FRAGS,
 	});
 	frag_12_rb.active = false;
 	frag_12.add_component<CircleCollider>(50);
@@ -404,7 +422,7 @@ void StartSubScene::create_wall_fragments(crepe::Scene & scn, float begin_x) {
 	Sprite & smoke_sprite_1 = smoke_particles_1.add_component<Sprite>(
 		smoke_asset_1, Sprite::Data{
 						   .color = Color(255, 255, 255, 50),
-						   .sorting_in_layer = 15,
+						   .sorting_in_layer = SORT_IN_LAY_PARTICLES_FOREGROUND,
 						   .order_in_layer = 0,
 						   .size = vec2(0, 100),
 					   });
@@ -425,7 +443,7 @@ void StartSubScene::create_wall_fragments(crepe::Scene & scn, float begin_x) {
 	Sprite & smoke_sprite_2 = smoke_particles_2.add_component<Sprite>(
 		smoke_asset_2, Sprite::Data{
 						   .color = Color(255, 255, 255, 50),
-						   .sorting_in_layer = 15,
+						   .sorting_in_layer = SORT_IN_LAY_PARTICLES_FOREGROUND,
 						   .order_in_layer = 0,
 						   .size = vec2(0, 70),
 					   });
diff --git a/game/StartSubScene.h b/game/background/StartSubScene.h
index c83e3d5..c83e3d5 100644
--- a/game/StartSubScene.h
+++ b/game/background/StartSubScene.h
diff --git a/mwe/events/include/event.h b/mwe/events/include/event.h
index ee1bf52..e1b220b 100644
--- a/mwe/events/include/event.h
+++ b/mwe/events/include/event.h
@@ -148,7 +148,7 @@ private:
 };
 class ShutDownEvent : public Event {
 public:
-	ShutDownEvent() : Event("ShutDownEvent") {};
+	ShutDownEvent() : Event("ShutDownEvent"){};
 
 	REGISTER_EVENT_TYPE(ShutDownEvent)
 
diff --git a/src/crepe/system/InputSystem.h b/src/crepe/system/InputSystem.h
index 45b238b..2cb80e5 100644
--- a/src/crepe/system/InputSystem.h
+++ b/src/crepe/system/InputSystem.h
@@ -23,7 +23,7 @@ public:
 	/**
 	 * \param metadata Metadata of the button pressed
 	 */
-	ButtonPressEvent(const Metadata & metadata) : metadata(metadata) {};
+	ButtonPressEvent(const Metadata & metadata) : metadata(metadata){};
 };
 //! Event triggered when the mouse enters a button
 class ButtonEnterEvent : public Event {
@@ -33,7 +33,7 @@ public:
 	/**
 	 * \param metadata Metadata of the button pressed
 	 */
-	ButtonEnterEvent(const Metadata & metadata) : metadata(metadata) {};
+	ButtonEnterEvent(const Metadata & metadata) : metadata(metadata){};
 };
 //! Event triggered when the mouse leaves a button
 class ButtonExitEvent : public Event {
@@ -43,7 +43,7 @@ public:
 	/**
 	 * \param metadata Metadata of the button pressed
 	 */
-	ButtonExitEvent(const Metadata & metadata) : metadata(metadata) {};
+	ButtonExitEvent(const Metadata & metadata) : metadata(metadata){};
 };
 
 /**