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index 20c86d2..302ca0c 100644
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index 79c6e16..cd54bfa 100644
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index 28243d8..b236c6d 100644
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diff --git a/art/beam_frames/laser5.png.import b/art/beam_frames/laser5.png.import
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 compress/lossy_quality=0.7
 compress/hdr_mode=0
+compress/bptc_ldr=0
 compress/normal_map=0
 flags/repeat=0
 flags/filter=false
@@ -23,6 +27,8 @@ flags/srgb=2
 process/fix_alpha_border=true
 process/premult_alpha=false
 process/HDR_as_SRGB=false
+process/invert_color=false
+process/normal_map_invert_y=false
 stream=false
 size_limit=0
 detect_3d=false
diff --git a/art/beam_frames/laser6.png.import b/art/beam_frames/laser6.png.import
index c645d0e..d97ee28 100644
--- a/art/beam_frames/laser6.png.import
+++ b/art/beam_frames/laser6.png.import
@@ -3,6 +3,9 @@
 importer="texture"
 type="StreamTexture"
 path="res://.import/laser6.png-7439aaa3c6999a31603529fcf0b7d749.stex"
+metadata={
+"vram_texture": false
+}
 
 [deps]
 
@@ -14,6 +17,7 @@ dest_files=[ "res://.import/laser6.png-7439aaa3c6999a31603529fcf0b7d749.stex" ]
 compress/mode=0
 compress/lossy_quality=0.7
 compress/hdr_mode=0
+compress/bptc_ldr=0
 compress/normal_map=0
 flags/repeat=0
 flags/filter=false
@@ -23,6 +27,8 @@ flags/srgb=2
 process/fix_alpha_border=true
 process/premult_alpha=false
 process/HDR_as_SRGB=false
+process/invert_color=false
+process/normal_map_invert_y=false
 stream=false
 size_limit=0
 detect_3d=false
diff --git a/art/beam_frames/laser7.png.import b/art/beam_frames/laser7.png.import
index ebb9472..d6b77f0 100644
--- a/art/beam_frames/laser7.png.import
+++ b/art/beam_frames/laser7.png.import
@@ -3,6 +3,9 @@
 importer="texture"
 type="StreamTexture"
 path="res://.import/laser7.png-55229c351bc2ce65850e1ee21f5350c2.stex"
+metadata={
+"vram_texture": false
+}
 
 [deps]
 
@@ -14,6 +17,7 @@ dest_files=[ "res://.import/laser7.png-55229c351bc2ce65850e1ee21f5350c2.stex" ]
 compress/mode=0
 compress/lossy_quality=0.7
 compress/hdr_mode=0
+compress/bptc_ldr=0
 compress/normal_map=0
 flags/repeat=0
 flags/filter=false
@@ -23,6 +27,8 @@ flags/srgb=2
 process/fix_alpha_border=true
 process/premult_alpha=false
 process/HDR_as_SRGB=false
+process/invert_color=false
+process/normal_map_invert_y=false
 stream=false
 size_limit=0
 detect_3d=false
diff --git a/art/bg.kra~ b/art/bg.kra~
deleted file mode 100644
index ff15113..0000000
Binary files a/art/bg.kra~ and /dev/null differ
diff --git a/art/bg.png.import b/art/bg.png.import
deleted file mode 100644
index 6d6af89..0000000
--- a/art/bg.png.import
+++ /dev/null
@@ -1,29 +0,0 @@
-[remap]
-
-importer="texture"
-type="StreamTexture"
-path="res://.import/bg.png-ca4dd02b5a08671d1e8200d74b5e8347.stex"
-
-[deps]
-
-source_file="res://art/bg.png"
-dest_files=[ "res://.import/bg.png-ca4dd02b5a08671d1e8200d74b5e8347.stex" ]
-
-[params]
-
-compress/mode=0
-compress/lossy_quality=0.7
-compress/hdr_mode=0
-compress/normal_map=0
-flags/repeat=0
-flags/filter=false
-flags/mipmaps=false
-flags/anisotropic=false
-flags/srgb=2
-process/fix_alpha_border=true
-process/premult_alpha=false
-process/HDR_as_SRGB=false
-stream=false
-size_limit=0
-detect_3d=false
-svg/scale=1.0
diff --git a/art/laser.kra~ b/art/laser.kra~
deleted file mode 100644
index b8cfe28..0000000
Binary files a/art/laser.kra~ and /dev/null differ
diff --git a/art/laser_beam.png.import b/art/laser_beam.png.import
deleted file mode 100644
index c495ff8..0000000
--- a/art/laser_beam.png.import
+++ /dev/null
@@ -1,29 +0,0 @@
-[remap]
-
-importer="texture"
-type="StreamTexture"
-path="res://.import/laser_beam.png-63a193f03d65cacb4399cfdc997d378c.stex"
-
-[deps]
-
-source_file="res://art/laser_beam.png"
-dest_files=[ "res://.import/laser_beam.png-63a193f03d65cacb4399cfdc997d378c.stex" ]
-
-[params]
-
-compress/mode=0
-compress/lossy_quality=0.7
-compress/hdr_mode=0
-compress/normal_map=0
-flags/repeat=0
-flags/filter=false
-flags/mipmaps=false
-flags/anisotropic=false
-flags/srgb=2
-process/fix_alpha_border=true
-process/premult_alpha=false
-process/HDR_as_SRGB=false
-stream=false
-size_limit=0
-detect_3d=true
-svg/scale=1.0
diff --git a/art/laser_beam_snim.kra~ b/art/laser_beam_snim.kra~
deleted file mode 100644
index 8dee1bf..0000000
Binary files a/art/laser_beam_snim.kra~ and /dev/null differ
diff --git a/art/laser_enemy.png.import b/art/laser_enemy.png.import
deleted file mode 100644
index 81e3623..0000000
--- a/art/laser_enemy.png.import
+++ /dev/null
@@ -1,29 +0,0 @@
-[remap]
-
-importer="texture"
-type="StreamTexture"
-path="res://.import/laser_enemy.png-a2b286638460418bb5b274fbb29453a0.stex"
-
-[deps]
-
-source_file="res://art/laser_enemy.png"
-dest_files=[ "res://.import/laser_enemy.png-a2b286638460418bb5b274fbb29453a0.stex" ]
-
-[params]
-
-compress/mode=0
-compress/lossy_quality=0.7
-compress/hdr_mode=0
-compress/normal_map=0
-flags/repeat=0
-flags/filter=true
-flags/mipmaps=false
-flags/anisotropic=false
-flags/srgb=2
-process/fix_alpha_border=true
-process/premult_alpha=false
-process/HDR_as_SRGB=false
-stream=false
-size_limit=0
-detect_3d=true
-svg/scale=1.0
diff --git a/art/laser_frames/laser_e1.png.import b/art/laser_frames/laser_e1.png.import
index 354bf00..d47f554 100644
--- a/art/laser_frames/laser_e1.png.import
+++ b/art/laser_frames/laser_e1.png.import
@@ -3,6 +3,9 @@
 importer="texture"
 type="StreamTexture"
 path="res://.import/laser_e1.png-d3424a47d5d7f2c713055d0eec09a4d9.stex"
+metadata={
+"vram_texture": false
+}
 
 [deps]
 
@@ -14,6 +17,7 @@ dest_files=[ "res://.import/laser_e1.png-d3424a47d5d7f2c713055d0eec09a4d9.stex"
 compress/mode=0
 compress/lossy_quality=0.7
 compress/hdr_mode=0
+compress/bptc_ldr=0
 compress/normal_map=0
 flags/repeat=0
 flags/filter=false
@@ -23,6 +27,8 @@ flags/srgb=2
 process/fix_alpha_border=true
 process/premult_alpha=false
 process/HDR_as_SRGB=false
+process/invert_color=false
+process/normal_map_invert_y=false
 stream=false
 size_limit=0
 detect_3d=false
diff --git a/art/laser_frames/laser_e2.png.import b/art/laser_frames/laser_e2.png.import
index 43f4db0..e67bdbf 100644
--- a/art/laser_frames/laser_e2.png.import
+++ b/art/laser_frames/laser_e2.png.import
@@ -3,6 +3,9 @@
 importer="texture"
 type="StreamTexture"
 path="res://.import/laser_e2.png-2f087550b3c5b4c6645c31c52673191b.stex"
+metadata={
+"vram_texture": false
+}
 
 [deps]
 
@@ -14,6 +17,7 @@ dest_files=[ "res://.import/laser_e2.png-2f087550b3c5b4c6645c31c52673191b.stex"
 compress/mode=0
 compress/lossy_quality=0.7
 compress/hdr_mode=0
+compress/bptc_ldr=0
 compress/normal_map=0
 flags/repeat=0
 flags/filter=false
@@ -23,6 +27,8 @@ flags/srgb=2
 process/fix_alpha_border=true
 process/premult_alpha=false
 process/HDR_as_SRGB=false
+process/invert_color=false
+process/normal_map_invert_y=false
 stream=false
 size_limit=0
 detect_3d=false
diff --git a/art/laser_frames/laser_e3.png.import b/art/laser_frames/laser_e3.png.import
index 6e97ec9..62e0dac 100644
--- a/art/laser_frames/laser_e3.png.import
+++ b/art/laser_frames/laser_e3.png.import
@@ -3,6 +3,9 @@
 importer="texture"
 type="StreamTexture"
 path="res://.import/laser_e3.png-50133e74933ab1785ed04c37e330cbd2.stex"
+metadata={
+"vram_texture": false
+}
 
 [deps]
 
@@ -14,6 +17,7 @@ dest_files=[ "res://.import/laser_e3.png-50133e74933ab1785ed04c37e330cbd2.stex"
 compress/mode=0
 compress/lossy_quality=0.7
 compress/hdr_mode=0
+compress/bptc_ldr=0
 compress/normal_map=0
 flags/repeat=0
 flags/filter=false
@@ -23,6 +27,8 @@ flags/srgb=2
 process/fix_alpha_border=true
 process/premult_alpha=false
 process/HDR_as_SRGB=false
+process/invert_color=false
+process/normal_map_invert_y=false
 stream=false
 size_limit=0
 detect_3d=false
diff --git a/art/laser_frames/laser_e4.png.import b/art/laser_frames/laser_e4.png.import
index 2073eaa..1276879 100644
--- a/art/laser_frames/laser_e4.png.import
+++ b/art/laser_frames/laser_e4.png.import
@@ -3,6 +3,9 @@
 importer="texture"
 type="StreamTexture"
 path="res://.import/laser_e4.png-3a28c9004ed157751cfc2d65ec0d4968.stex"
+metadata={
+"vram_texture": false
+}
 
 [deps]
 
@@ -14,6 +17,7 @@ dest_files=[ "res://.import/laser_e4.png-3a28c9004ed157751cfc2d65ec0d4968.stex"
 compress/mode=0
 compress/lossy_quality=0.7
 compress/hdr_mode=0
+compress/bptc_ldr=0
 compress/normal_map=0
 flags/repeat=0
 flags/filter=false
@@ -23,6 +27,8 @@ flags/srgb=2
 process/fix_alpha_border=true
 process/premult_alpha=false
 process/HDR_as_SRGB=false
+process/invert_color=false
+process/normal_map_invert_y=false
 stream=false
 size_limit=0
 detect_3d=false
diff --git a/art/laserbeam.kra~ b/art/laserbeam.kra~
deleted file mode 100644
index 44bf102..0000000
Binary files a/art/laserbeam.kra~ and /dev/null differ
diff --git a/art/main_menu.png.import b/art/main_menu.png.import
deleted file mode 100644
index 49c7366..0000000
--- a/art/main_menu.png.import
+++ /dev/null
@@ -1,29 +0,0 @@
-[remap]
-
-importer="texture"
-type="StreamTexture"
-path="res://.import/main_menu.png-762fdd61d58100d0de812d558e587c2b.stex"
-
-[deps]
-
-source_file="res://art/main_menu.png"
-dest_files=[ "res://.import/main_menu.png-762fdd61d58100d0de812d558e587c2b.stex" ]
-
-[params]
-
-compress/mode=0
-compress/lossy_quality=0.7
-compress/hdr_mode=0
-compress/normal_map=0
-flags/repeat=0
-flags/filter=false
-flags/mipmaps=false
-flags/anisotropic=false
-flags/srgb=2
-process/fix_alpha_border=true
-process/premult_alpha=false
-process/HDR_as_SRGB=false
-stream=false
-size_limit=0
-detect_3d=false
-svg/scale=1.0
diff --git a/art/player.kra~ b/art/player.kra~
deleted file mode 100644
index 6e62968..0000000
Binary files a/art/player.kra~ and /dev/null differ
diff --git a/art/player.png.import b/art/player.png.import
deleted file mode 100644
index 03e6674..0000000
--- a/art/player.png.import
+++ /dev/null
@@ -1,29 +0,0 @@
-[remap]
-
-importer="texture"
-type="StreamTexture"
-path="res://.import/player.png-99d195b4b10a03b7e1088962b50c29f4.stex"
-
-[deps]
-
-source_file="res://art/player.png"
-dest_files=[ "res://.import/player.png-99d195b4b10a03b7e1088962b50c29f4.stex" ]
-
-[params]
-
-compress/mode=0
-compress/lossy_quality=0.7
-compress/hdr_mode=0
-compress/normal_map=0
-flags/repeat=0
-flags/filter=true
-flags/mipmaps=false
-flags/anisotropic=false
-flags/srgb=2
-process/fix_alpha_border=true
-process/premult_alpha=false
-process/HDR_as_SRGB=false
-stream=false
-size_limit=0
-detect_3d=true
-svg/scale=1.0
diff --git a/art/wall.kra~ b/art/wall.kra~
deleted file mode 100644
index bdcbfd1..0000000
Binary files a/art/wall.kra~ and /dev/null differ
diff --git a/art/wall.png.import b/art/wall.png.import
deleted file mode 100644
index 385eb9c..0000000
--- a/art/wall.png.import
+++ /dev/null
@@ -1,29 +0,0 @@
-[remap]
-
-importer="texture"
-type="StreamTexture"
-path="res://.import/wall.png-a390048f5e12dd0b271d636d681186c9.stex"
-
-[deps]
-
-source_file="res://art/wall.png"
-dest_files=[ "res://.import/wall.png-a390048f5e12dd0b271d636d681186c9.stex" ]
-
-[params]
-
-compress/mode=0
-compress/lossy_quality=0.7
-compress/hdr_mode=0
-compress/normal_map=0
-flags/repeat=0
-flags/filter=false
-flags/mipmaps=false
-flags/anisotropic=false
-flags/srgb=2
-process/fix_alpha_border=true
-process/premult_alpha=false
-process/HDR_as_SRGB=false
-stream=false
-size_limit=0
-detect_3d=true
-svg/scale=1.0
diff --git a/build/build.zip b/build/build.zip
deleted file mode 100644
index c511cb9..0000000
Binary files a/build/build.zip and /dev/null differ
diff --git a/build/flat.exe b/build/flat.exe
deleted file mode 100644
index e39973a..0000000
Binary files a/build/flat.exe and /dev/null differ
diff --git a/build/flat.pck b/build/flat.pck
deleted file mode 100644
index d5ed412..0000000
Binary files a/build/flat.pck and /dev/null differ
diff --git a/build/flat.x86_64 b/build/flat.x86_64
deleted file mode 100755
index 0c1c5d3..0000000
Binary files a/build/flat.x86_64 and /dev/null differ
diff --git a/build/flat.zip b/build/flat.zip
deleted file mode 100644
index d480513..0000000
Binary files a/build/flat.zip and /dev/null differ
diff --git a/default_env.tres b/default_env.tres
index ad86b72..0f8c712 100644
--- a/default_env.tres
+++ b/default_env.tres
@@ -1,101 +1,18 @@
 [gd_resource type="Environment" load_steps=2 format=2]
 
 [sub_resource type="ProceduralSky" id=1]
-
 radiance_size = 4
 sky_top_color = Color( 0.0470588, 0.454902, 0.976471, 1 )
 sky_horizon_color = Color( 0.556863, 0.823529, 0.909804, 1 )
 sky_curve = 0.25
-sky_energy = 1.0
 ground_bottom_color = Color( 0.101961, 0.145098, 0.188235, 1 )
 ground_horizon_color = Color( 0.482353, 0.788235, 0.952941, 1 )
 ground_curve = 0.01
-ground_energy = 1.0
-sun_color = Color( 1, 1, 1, 1 )
-sun_latitude = 35.0
-sun_longitude = 0.0
-sun_angle_min = 1.0
-sun_angle_max = 100.0
-sun_curve = 0.05
 sun_energy = 16.0
-texture_size = 2
 
 [resource]
-
 background_mode = 2
 background_sky = SubResource( 1 )
-background_sky_custom_fov = 0.0
-background_color = Color( 0, 0, 0, 1 )
-background_energy = 1.0
-background_canvas_max_layer = 0
-ambient_light_color = Color( 0, 0, 0, 1 )
-ambient_light_energy = 1.0
-ambient_light_sky_contribution = 1.0
-fog_enabled = false
-fog_color = Color( 0.5, 0.6, 0.7, 1 )
-fog_sun_color = Color( 1, 0.9, 0.7, 1 )
-fog_sun_amount = 0.0
-fog_depth_enabled = true
-fog_depth_begin = 10.0
-fog_depth_curve = 1.0
-fog_transmit_enabled = false
-fog_transmit_curve = 1.0
-fog_height_enabled = false
 fog_height_min = 0.0
 fog_height_max = 100.0
-fog_height_curve = 1.0
-tonemap_mode = 0
-tonemap_exposure = 1.0
-tonemap_white = 1.0
-auto_exposure_enabled = false
-auto_exposure_scale = 0.4
-auto_exposure_min_luma = 0.05
-auto_exposure_max_luma = 8.0
-auto_exposure_speed = 0.5
-ss_reflections_enabled = false
-ss_reflections_max_steps = 64
-ss_reflections_fade_in = 0.15
-ss_reflections_fade_out = 2.0
-ss_reflections_depth_tolerance = 0.2
-ss_reflections_roughness = true
-ssao_enabled = false
-ssao_radius = 1.0
-ssao_intensity = 1.0
-ssao_radius2 = 0.0
-ssao_intensity2 = 1.0
-ssao_bias = 0.01
-ssao_light_affect = 0.0
-ssao_color = Color( 0, 0, 0, 1 )
 ssao_quality = 0
-ssao_blur = 3
-ssao_edge_sharpness = 4.0
-dof_blur_far_enabled = false
-dof_blur_far_distance = 10.0
-dof_blur_far_transition = 5.0
-dof_blur_far_amount = 0.1
-dof_blur_far_quality = 1
-dof_blur_near_enabled = false
-dof_blur_near_distance = 2.0
-dof_blur_near_transition = 1.0
-dof_blur_near_amount = 0.1
-dof_blur_near_quality = 1
-glow_enabled = false
-glow_levels/1 = false
-glow_levels/2 = false
-glow_levels/3 = true
-glow_levels/4 = false
-glow_levels/5 = true
-glow_levels/6 = false
-glow_levels/7 = false
-glow_intensity = 0.8
-glow_strength = 1.0
-glow_bloom = 0.0
-glow_blend_mode = 2
-glow_hdr_threshold = 1.0
-glow_hdr_scale = 2.0
-glow_bicubic_upscale = false
-adjustment_enabled = false
-adjustment_brightness = 1.0
-adjustment_contrast = 1.0
-adjustment_saturation = 1.0
-
diff --git a/flat_adv.zip b/flat_adv.zip
deleted file mode 100644
index 0314e51..0000000
Binary files a/flat_adv.zip and /dev/null differ
diff --git a/gamescene.gd b/gamescene.gd
index ce4c642..301fb48 100644
--- a/gamescene.gd
+++ b/gamescene.gd
@@ -88,8 +88,8 @@ func toggle_screenshake(state):
 	
 func screenshake(off,mag):	
 	$cam.set_offset(Vector2( \
-        rand_range(-off,off) * mag, \
-        rand_range(-off,off) * mag ))
+		rand_range(-off,off) * mag, \
+		rand_range(-off,off) * mag ))
 	
 func _on_leveltimer_timeout():
 	Global.diff_level = min(Global.diff_level+1,10)
diff --git a/gamescene.tscn b/gamescene.tscn
index d24cc88..01582c4 100644
--- a/gamescene.tscn
+++ b/gamescene.tscn
@@ -8,83 +8,45 @@
 [ext_resource path="res://art/wall.png" type="Texture" id=6]
 
 [sub_resource type="RectangleShape2D" id=1]
-
-custom_solver_bias = 0.0
 extents = Vector2( 32, 15.6897 )
 
-[node name="Gamescene" type="Node2D" index="0"]
-
+[node name="Gamescene" type="Node2D"]
 script = ExtResource( 1 )
 
-[node name="bg" type="Sprite" parent="." index="0"]
-
+[node name="bg" type="Sprite" parent="."]
 position = Vector2( 320, 240 )
 texture = ExtResource( 2 )
 __meta__ = {
 "_edit_lock_": true
 }
 
-[node name="cam" type="Camera2D" parent="." index="1"]
-
+[node name="cam" type="Camera2D" parent="."]
 position = Vector2( 296, 240 )
-anchor_mode = 1
-rotating = false
 current = true
-zoom = Vector2( 1, 1 )
-limit_left = -10000000
-limit_top = -10000000
-limit_right = 10000000
-limit_bottom = 10000000
-limit_smoothed = false
 drag_margin_h_enabled = true
 drag_margin_v_enabled = true
-smoothing_enabled = false
-smoothing_speed = 5.0
-offset_v = 0.0
-offset_h = 0.0
-drag_margin_left = 0.2
-drag_margin_top = 0.2
-drag_margin_right = 0.2
-drag_margin_bottom = 0.2
-editor_draw_screen = true
-editor_draw_limits = false
-editor_draw_drag_margin = false
 script = ExtResource( 3 )
 
-[node name="Player" parent="." index="2" instance=ExtResource( 4 )]
-
+[node name="Player" parent="." instance=ExtResource( 4 )]
 position = Vector2( 199.446, 96.3989 )
 
-[node name="Wall_Spawner" parent="." index="3" instance=ExtResource( 5 )]
-
+[node name="Wall_Spawner" parent="." instance=ExtResource( 5 )]
 position = Vector2( 671.423, 111.06 )
 
-[node name="fieldwall" type="StaticBody2D" parent="." index="4"]
-
-editor/display_folded = true
+[node name="fieldwall" type="StaticBody2D" parent="."]
 position = Vector2( 320, -16 )
 scale = Vector2( 10.125, 1 )
-input_pickable = false
-collision_layer = 1
-collision_mask = 1
-constant_linear_velocity = Vector2( 0, 0 )
-constant_angular_velocity = 0.0
-friction = 1.0
-bounce = 0.0
 __meta__ = {
 "_edit_lock_": true
 }
 
-[node name="Sprite" type="Sprite" parent="fieldwall" index="0"]
-
+[node name="Sprite" type="Sprite" parent="fieldwall"]
 texture = ExtResource( 6 )
-_sections_unfolded = [ "Animation", "Transform" ]
 __meta__ = {
 "_edit_lock_": true
 }
 
-[node name="CollisionShape2D" type="CollisionShape2D" parent="fieldwall" index="1"]
-
+[node name="CollisionShape2D" type="CollisionShape2D" parent="fieldwall"]
 position = Vector2( 0, -1.67308 )
 scale = Vector2( 1, 0.945607 )
 shape = SubResource( 1 )
@@ -92,19 +54,11 @@ __meta__ = {
 "_edit_lock_": true
 }
 
-[node name="leveltimer" type="Timer" parent="." index="5"]
-
-process_mode = 1
+[node name="leveltimer" type="Timer" parent="."]
 wait_time = 15.0
-one_shot = false
 autostart = true
 
 [connection signal="gameover" from="Player" to="." method="_on_Player_gameover"]
-
 [connection signal="laser_spawned" from="Wall_Spawner" to="." method="_on_Wall_Spawner_laser_spawned"]
-
 [connection signal="wall_spawned" from="Wall_Spawner" to="." method="_on_Wall_Spawner_wall_spawned"]
-
 [connection signal="timeout" from="leveltimer" to="." method="_on_leveltimer_timeout"]
-
-
diff --git a/icon.png.import b/icon.png.import
index 0041ef8..a4c02e6 100644
--- a/icon.png.import
+++ b/icon.png.import
@@ -3,6 +3,9 @@
 importer="texture"
 type="StreamTexture"
 path="res://.import/icon.png-487276ed1e3a0c39cad0279d744ee560.stex"
+metadata={
+"vram_texture": false
+}
 
 [deps]
 
@@ -14,6 +17,7 @@ dest_files=[ "res://.import/icon.png-487276ed1e3a0c39cad0279d744ee560.stex" ]
 compress/mode=0
 compress/lossy_quality=0.7
 compress/hdr_mode=0
+compress/bptc_ldr=0
 compress/normal_map=0
 flags/repeat=0
 flags/filter=true
@@ -23,6 +27,8 @@ flags/srgb=2
 process/fix_alpha_border=true
 process/premult_alpha=false
 process/HDR_as_SRGB=false
+process/invert_color=false
+process/normal_map_invert_y=false
 stream=false
 size_limit=0
 detect_3d=true
diff --git a/mainmenu.tscn b/mainmenu.tscn
index a0028f1..bf490fd 100644
--- a/mainmenu.tscn
+++ b/mainmenu.tscn
@@ -7,132 +7,71 @@
 [ext_resource path="res://blank.gd" type="Script" id=5]
 
 [sub_resource type="DynamicFont" id=1]
-
 size = 10
-use_mipmaps = false
-use_filter = false
 font_data = ExtResource( 4 )
-_sections_unfolded = [ "Font", "Settings" ]
 
 [node name="mainmenu" type="Node2D"]
-
 script = ExtResource( 1 )
 
-[node name="Sprite" type="Sprite" parent="." index="0"]
-
+[node name="Sprite" type="Sprite" parent="."]
 position = Vector2( 304, 240 )
 texture = ExtResource( 2 )
 __meta__ = {
 "_edit_lock_": true
 }
 
-[node name="Spiny" type="Sprite" parent="." index="1"]
-
+[node name="Spiny" type="Sprite" parent="."]
 position = Vector2( 304, 208 )
 scale = Vector2( 3.5, 3.5 )
 texture = ExtResource( 3 )
-_sections_unfolded = [ "Animation", "Offset", "Region" ]
 __meta__ = {
 "_edit_lock_": true
 }
 
-[node name="highscore" type="Label" parent="Spiny" index="0"]
-
-anchor_left = 0.0
-anchor_top = 0.0
-anchor_right = 0.0
-anchor_bottom = 0.0
+[node name="highscore" type="Label" parent="Spiny"]
 margin_left = -9.0
 margin_top = -9.0
 margin_right = 9.0
 margin_bottom = 9.0
-rect_pivot_offset = Vector2( 0, 0 )
-rect_clip_content = false
-mouse_filter = 2
-mouse_default_cursor_shape = 0
 size_flags_horizontal = 5
-size_flags_vertical = 4
-custom_fonts/font = SubResource( 1 )
 custom_colors/font_color = Color( 0, 0, 0, 1 )
+custom_fonts/font = SubResource( 1 )
 text = "0"
 align = 1
 valign = 1
-percent_visible = 1.0
-lines_skipped = 0
-max_lines_visible = -1
-_sections_unfolded = [ "Size Flags", "Theme", "custom_colors", "custom_fonts" ]
 __meta__ = {
 "_edit_lock_": true
 }
 
-[node name="Label" type="Label" parent="." index="2"]
-
-anchor_left = 0.0
-anchor_top = 0.0
-anchor_right = 0.0
-anchor_bottom = 0.0
+[node name="Label" type="Label" parent="."]
 margin_left = 240.0
 margin_top = 288.0
 margin_right = 373.0
 margin_bottom = 302.0
-rect_pivot_offset = Vector2( 0, 0 )
-rect_clip_content = false
-mouse_filter = 2
-mouse_default_cursor_shape = 0
-size_flags_horizontal = 1
-size_flags_vertical = 4
 text = "Press Space to Begin"
-percent_visible = 1.0
-lines_skipped = 0
-max_lines_visible = -1
 __meta__ = {
 "_edit_lock_": true
 }
 
-[node name="blank" type="Sprite" parent="." index="3"]
-
+[node name="blank" type="Sprite" parent="."]
 position = Vector2( -16, 0 )
 scale = Vector2( 40, 30 )
 texture = ExtResource( 3 )
 centered = false
 flip_v = true
 script = ExtResource( 5 )
-_sections_unfolded = [ "Offset", "Transform" ]
 
-[node name="Tween" type="Tween" parent="blank" index="0"]
+[node name="Tween" type="Tween" parent="blank"]
 
-repeat = false
-playback_process_mode = 1
-playback_speed = 1.0
-playback/active = false
-playback/repeat = false
-playback/speed = 1.0
-
-[node name="Label2" type="Label" parent="." index="4"]
-
-anchor_left = 0.0
-anchor_top = 0.0
-anchor_right = 0.0
-anchor_bottom = 0.0
+[node name="Label2" type="Label" parent="."]
 margin_left = 32.0
 margin_top = 416.0
 margin_right = 370.0
 margin_bottom = 498.0
-rect_pivot_offset = Vector2( 0, 0 )
-rect_clip_content = false
-mouse_filter = 2
-mouse_default_cursor_shape = 0
-size_flags_horizontal = 1
-size_flags_vertical = 4
 text = "Inspired by: Flappy Bird
 Created In: Godot 3 Engine (https://godotengine.org/)
 Art: Done In Krita (https://krita.org/en/)
 Produced by: En Yi (eyt21@cam.ac.uk)
 "
-percent_visible = 1.0
-lines_skipped = 0
-max_lines_visible = -1
 
 [connection signal="tween_completed" from="blank/Tween" to="." method="_on_Tween_tween_completed"]
-
-
diff --git a/math.gd b/math.gd
index e058be0..b60f73a 100644
--- a/math.gd
+++ b/math.gd
@@ -15,8 +15,8 @@ static func within_bounds(val, lower, upper, inclusive = true):
 		return val<upper and val>lower
 		
 static func roll_die(n_times=1, n_sides=6):
-	assert n_times > 0
-	assert n_sides >= 1
+	assert(n_times > 0)
+	assert(n_sides >= 1)
 	var total = 0
 	for i in range(n_times):
 		total += randint(1, n_sides)
diff --git a/project.godot b/project.godot
index c027f13..93c3b01 100644
--- a/project.godot
+++ b/project.godot
@@ -6,7 +6,7 @@
 ;   [section] ; section goes between []
 ;   param=value ; assign values to parameters
 
-config_version=3
+config_version=4
 
 [application]
 
@@ -48,6 +48,7 @@ texture={
 
 [rendering]
 
-quality/2d/use_pixel_snap=true
+2d/snapping/use_gpu_pixel_snap=true
 environment/default_clear_color=Color( 0.4375, 0.435791, 0.435791, 1 )
 environment/default_environment="res://default_env.tres"
+quality/2d/use_pixel_snap=true