idk i think i made things better

7 files changed, 45 insertions, 37 deletions

diff --git a/src/assets.odin b/src/assets.odin
index 35536f1..592937b 100644
--- a/src/assets.odin
+++ b/src/assets.odin
@@ -49,7 +49,7 @@ images: [Image_Id]Image_Resource = {
 
 animations: [Animation_Id]Animation_Resource = {
   .None = {frame_count=1, frame_durations={100}, tags={}},
-  .Player = {frame_count = 23, frame_durations = {100, 100, 100, 100, 100, 100, 75, 75, 75, 75, 75, 75, 75, 75, 100, 100, 100, 100, 100, 100, 100, 100, 100}, tags = {"jump_up"={from = 14, to = 15}, "jump_down"={from = 17, to = 18}, "jump_trans"={from = 16, to = 16}, "sleep"={from = 19, to = 22}, "run"={from = 6, to = 13}, "idle"={from = 0, to = 5}}},
+  .Player = {frame_count = 23, frame_durations = {100, 100, 100, 100, 100, 100, 75, 75, 75, 75, 75, 75, 75, 75, 100, 100, 100, 100, 100, 100, 100, 100, 100}, tags = {"idle"={from = 0, to = 5}, "jump_trans"={from = 16, to = 16}, "run"={from = 6, to = 13}, "jump_down"={from = 17, to = 18}, "jump_up"={from = 14, to = 15}, "sleep"={from = 19, to = 22}}},
 }
 
 rooms: [Room_Id]Room_Resource = {
@@ -57,7 +57,7 @@ rooms: [Room_Id]Room_Resource = {
   .Carrabassett1 = {width=20, height=20, tile_width=16, tile_height=16, layers={{40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 21, 31, 31, 31, 28, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 27, 31, 31, 17, 0, 0, 0, 16, 19, 28, 40, 40, 40, 40, 40, 40, 40, 27, 31, 31, 17, 0, 0, 0, 0, 0, 0, 0, 0, 16, 28, 40, 40, 40, 40, 40, 27, 17, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 16, 28, 40, 40, 40, 40, 32, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 16, 28, 40, 40, 40, 8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 7, 40, 40, 21, 17, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 7, 40, 40, 8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 7, 40, 40, 8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 7, 40, 40, 8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 7, 40, 40, 38, 42, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 7, 40, 40, 40, 8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 10, 28, 40, 40, 32, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 10, 40, 40, 8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 40, 40, 8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 40, 40, 43, 9, 9, 6, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 41, 18, 20, 20, 40, 40, 40, 40, 40, 43, 9, 9, 9, 9, 9, 9, 18, 9, 18, 18, 39, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40}}, objects={{type = .Upgrade, pos = {160, 240}, size = {0, 0}, parallax = {0, 0}, properties = {"image"="res/img/dash_pickup.qoi", "type"=0}}, }, background_image=nil},
   .Carrabassett2 = {width=20, height=20, tile_width=16, tile_height=16, layers={{40, 40, 40, 8, 0, 0, 7, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 8, 0, 0, 7, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 8, 0, 0, 10, 31, 31, 28, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 38, 20, 42, 0, 0, 0, 10, 19, 19, 28, 40, 40, 40, 40, 40, 40, 40, 40, 27, 31, 19, 28, 38, 18, 6, 0, 0, 0, 0, 10, 19, 28, 40, 40, 40, 40, 40, 27, 17, 0, 0, 10, 28, 40, 38, 20, 42, 0, 0, 0, 0, 7, 40, 40, 40, 40, 40, 17, 0, 0, 0, 0, 16, 19, 31, 19, 17, 0, 0, 0, 0, 7, 40, 40, 40, 40, 40, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 5, 39, 40, 40, 40, 40, 40, 0, 0, 0, 0, 0, 0, 0, 0, 0, 41, 18, 9, 9, 39, 40, 40, 40, 40, 40, 40, 20, 9, 18, 9, 9, 9, 20, 20, 9, 39, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40}}, objects={}, background_image=nil},
   .Carrabassett3 = {width=20, height=40, tile_width=16, tile_height=16, layers={{40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 27, 19, 31, 19, 19, 31, 28, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 21, 19, 31, 17, 0, 0, 0, 0, 0, 16, 19, 28, 40, 40, 40, 40, 40, 40, 40, 21, 17, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 16, 19, 28, 40, 40, 40, 40, 40, 32, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 7, 40, 40, 40, 40, 27, 17, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 7, 40, 40, 40, 40, 32, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 7, 40, 40, 40, 21, 17, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 10, 28, 40, 40, 32, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 7, 40, 40, 32, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 7, 40, 40, 8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 5, 20, 9, 39, 40, 40, 32, 0, 0, 0, 0, 0, 0, 0, 0, 0, 41, 18, 9, 18, 39, 40, 40, 40, 40, 40, 32, 0, 0, 0, 0, 41, 20, 20, 18, 18, 39, 40, 40, 40, 40, 40, 21, 28, 40, 40, 32, 0, 0, 0, 0, 10, 31, 31, 19, 19, 28, 40, 40, 40, 40, 27, 17, 7, 40, 40, 43, 42, 0, 0, 0, 0, 0, 0, 0, 0, 10, 19, 19, 19, 31, 17, 0, 7, 40, 40, 40, 38, 18, 18, 20, 42, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 7, 40, 40, 40, 40, 40, 40, 40, 38, 20, 20, 18, 6, 0, 0, 0, 0, 0, 0, 0, 7, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 38, 6, 0, 0, 0, 0, 0, 0, 7, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 43, 6, 0, 0, 0, 0, 0, 7, 40, 40, 21, 28, 40, 21, 31, 28, 40, 40, 40, 40, 40, 32, 0, 0, 0, 0, 0, 7, 40, 40, 32, 16, 19, 17, 0, 16, 19, 19, 31, 28, 40, 38, 9, 20, 6, 0, 0, 7, 40, 40, 8, 0, 0, 0, 0, 0, 0, 0, 0, 16, 19, 31, 19, 19, 17, 0, 0, 7, 40, 40, 32, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 7, 40, 40, 8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 5, 20, 18, 9, 9, 18, 20, 39, 40, 40, 43, 6, 0, 0, 0, 0, 0, 41, 20, 20, 39, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 38, 42, 0, 0, 0, 0, 7, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 38, 20, 20, 42, 0, 10, 19, 28, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 27, 19, 19, 28, 40, 8, 0, 0, 0, 10, 31, 19, 31, 28, 40, 40, 40, 40, 40, 40, 32, 0, 0, 10, 19, 17, 0, 0, 0, 0, 0, 0, 0, 16, 31, 31, 31, 19, 31, 40, 32, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 40, 38, 9, 9, 9, 20, 20, 18, 18, 9, 9, 42, 0, 0, 0, 0, 0, 0, 0, 0, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 8, 0, 0, 5, 20, 20, 9, 9, 18, 40, 40, 40, 21, 31, 31, 19, 31, 31, 19, 19, 17, 0, 5, 39, 40, 40, 40, 40, 40, 40, 40, 21, 17, 0, 0, 0, 0, 0, 0, 0, 0, 0, 10, 28, 40, 40, 40, 40, 40, 40, 27, 17, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 7, 40, 40, 40, 40, 40, 40, 32, 0, 0, 0, 0, 0, 0, 0, 0, 41, 20, 18, 20, 39, 40, 40, 40, 40, 40, 40, 32, 0, 0, 0, 0, 0, 0, 0, 0, 7, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 32, 0, 0, 0, 0, 0, 0, 0, 0, 7, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 38, 6, 0, 0, 0, 0, 41, 9, 9, 39, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 43, 6, 0, 0, 41, 39, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40}}, objects={}, background_image=nil},
-  .Carrabassett4 = {width=20, height=20, tile_width=16, tile_height=16, layers={{40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 21, 31, 28, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 21, 31, 19, 19, 17, 0, 10, 31, 19, 31, 28, 40, 40, 40, 40, 40, 40, 40, 21, 31, 17, 0, 0, 0, 0, 0, 0, 0, 0, 0, 16, 19, 31, 19, 28, 40, 40, 40, 8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 7, 40, 40, 21, 17, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 7, 40, 40, 8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 7, 40, 40, 32, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 7, 40, 27, 17, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 7, 40, 17, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 7, 40, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 41, 39, 40, 0, 0, 0, 0, 0, 0, 0, 0, 5, 18, 9, 20, 9, 20, 20, 9, 9, 39, 40, 40, 18, 9, 20, 18, 20, 9, 9, 9, 39, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40}}, objects={{type = .Upgrade, pos = {160, 241}, size = {0, 0}, parallax = {0, 0}, properties = {"image"="res/img/double_jump_pickup.qoi", "type"=1}}, }, background_image=nil},
+  .Carrabassett4 = {width=20, height=20, tile_width=16, tile_height=16, layers={{40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 21, 31, 28, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 21, 31, 19, 19, 17, 0, 10, 31, 19, 31, 28, 40, 40, 40, 40, 40, 40, 40, 21, 31, 17, 0, 0, 0, 0, 0, 0, 0, 0, 0, 16, 19, 31, 19, 28, 40, 40, 40, 8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 7, 40, 40, 21, 17, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 7, 40, 40, 8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 7, 40, 40, 32, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 7, 40, 27, 17, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 7, 40, 17, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 7, 40, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 41, 39, 40, 0, 0, 0, 0, 0, 0, 0, 0, 5, 18, 9, 20, 9, 20, 20, 9, 9, 39, 40, 40, 18, 9, 20, 18, 20, 9, 9, 9, 39, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40}}, objects={{type = .Upgrade, pos = {160, 241}, size = {0, 0}, parallax = {0, 0}, properties = {"type"=1, "image"="res/img/double_jump_pickup.qoi"}}, }, background_image=nil},
 }
 
 tilesets: [Tileset_Id]Tileset_Resource = {
diff --git a/src/bullet.odin b/src/bullet.odin
index f2e2e47..da6af73 100644
--- a/src/bullet.odin
+++ b/src/bullet.odin
@@ -25,12 +25,8 @@ make_bullet :: proc(
 ) -> (Entity_Handle, ^Bullet) {
   sprite: Sprite
   init_sprite(&sprite, image_id)
+  set_sprite_offset_percentage(&sprite, {0, 0.5})
 
-  sprite.offset = {
-    0,
-    // math.round(f32(sprite.width) * 0.5),
-    math.round(f32(sprite.height) * 0.5),
-  }
   sprite.rotation = math.atan2(vel.y, vel.x) * math.DEG_PER_RAD
   sprite.pos = pos
 
diff --git a/src/constants.odin b/src/constants.odin
index d415c3e..2875f4c 100644
--- a/src/constants.odin
+++ b/src/constants.odin
@@ -2,3 +2,24 @@ package demonchime
 
 GRAVITY :: 1000
 TERMINAL_VELOCITY :: 900
+
+CAMERA_ACCEL :: 15
+
+PLAYER_SPEED :: 100
+PLAYER_ACCEL :: 30
+PLAYER_JUMP_FORCE :: 350
+PLAYER_DOUBLE_JUMP_FORCE :: 250
+
+PLAYER_JUMP_BUFFERING :: 0.07
+PLAYER_COYOTE_TIME :: 0.06
+PLAYER_JUMP_RELEASE_CUT :: -100
+
+PLAYER_DASH_SPEED :: 500
+PLAYER_DASH_TIME :: 0.15
+PLAYER_DASH_COOLDOWN :: 0.3
+
+PLAYER_GUN_HEIGHT :: 0
+PLAYER_GUN_DIST :: 7 // how far out to hold the gun
+PLAYER_GUN_KICKBACK :: 4 // how far to move the gun back when you shoot
+
+PLAYER_SCARF_DIST :: 5
diff --git a/src/main.odin b/src/main.odin
index d141014..6e299c8 100644
--- a/src/main.odin
+++ b/src/main.odin
@@ -74,10 +74,10 @@ frame :: proc() {
     cb(dt)
   }
 
-  state.camera.target = linalg.lerp(
+  state.camera.target = dt_lerp(
     state.camera.target,
     state.camera_target,
-    10 * dt,
+    CAMERA_ACCEL,
   )
 
   draw_new_frame()
diff --git a/src/player.odin b/src/player.odin
index 9cec035..c87d2a6 100644
--- a/src/player.odin
+++ b/src/player.odin
@@ -8,24 +8,6 @@ import rl "vendor:raylib"
 
 import "phys"
 
-PLAYER_SPEED :: 100
-PLAYER_ACCEL :: 10
-PLAYER_JUMP_FORCE :: 350
-PLAYER_DOUBLE_JUMP_FORCE :: 250
-PLAYER_JUMP_BUFFERING :: 0.07
-PLAYER_COYOTE_TIME :: 0.06
-PLAYER_JUMP_RELEASE_CUT :: -100
-
-PLAYER_DASH_SPEED :: 500
-PLAYER_DASH_TIME :: 0.15
-PLAYER_DASH_COOLDOWN :: 0.3
-
-PLAYER_GUN_HEIGHT :: 0
-PLAYER_GUN_DIST :: 7 // how far out to hold the gun
-PLAYER_GUN_KICKBACK :: 4 // how far to move the gun back when you shoot
-
-PLAYER_SCARF_DIST :: 5
-
 Player_State :: enum {
   Default,
   Dash,
@@ -61,23 +43,19 @@ init_player :: proc() {
   player.body = body
 
   init_sprite(&player.sprite, .Player)
-
-  player.sprite.offset = Vec2 {
-    math.floor(f32(player.sprite.width / 2)),
-    math.floor(f32(player.sprite.height / 2)),
-  }
+  set_sprite_offset_percentage(&player.sprite, {0.5, 0.5})
 
   init_sprite(&player.gun.sprite, .Pistol)
 
   player.gun.sprite.offset = Vec2 {
     -PLAYER_GUN_DIST,
-    math.round(f32(player.gun.sprite.height / 2)),
+    math.round(f32(player.gun.sprite.height) * 0.5),
   }
 
   player.scarf = {
     point_max_dist = 2,
     point_rad = 2,
-    color_start = [4]f32{0.18, 0.13, 0.18, 1} * 0.5,
+    color_start = Color {0.18, 0.13, 0.18, 1} * 0.5,
     color_end = {0.18, 0.13, 0.18, 1},
   }
 }
@@ -184,10 +162,10 @@ _default_state :: proc(dt: f32) {
     vel.y = PLAYER_JUMP_RELEASE_CUT
   }
 
-  vel.x = math.lerp(
+  vel.x = dt_lerp(
     vel.x,
     input * PLAYER_SPEED,
-    math.pow(0.5, dt * PLAYER_ACCEL),
+    PLAYER_ACCEL,
   )
   vel.y = math.min(vel.y + GRAVITY * dt, TERMINAL_VELOCITY)
 
diff --git a/src/sprite.odin b/src/sprite.odin
index ab7df6e..09b68ae 100644
--- a/src/sprite.odin
+++ b/src/sprite.odin
@@ -1,6 +1,7 @@
 package demonchime
 
 import "core:log"
+import "core:math/linalg"
 
 import rl "vendor:raylib"
 
@@ -48,6 +49,12 @@ set_sprite_active_tag :: proc(sprite: ^Sprite, tag_name: string) {
   sprite.current_tag = anim.tags[tag_name]
 }
 
+set_sprite_offset_percentage :: proc(sprite: ^Sprite, offset: Vec2) {
+  sprite.offset = linalg.round(
+    Vec2{f32(sprite.width), f32(sprite.height)} * offset,
+  )
+}
+
 update_sprite :: proc(sprite: ^Sprite, dt: f32) {
   sprite.just_finished_loop = false
 
diff --git a/src/upgrade_pickup.odin b/src/upgrade_pickup.odin
index b491bd5..30b262c 100644
--- a/src/upgrade_pickup.odin
+++ b/src/upgrade_pickup.odin
@@ -32,7 +32,13 @@ draw_upgrade :: proc() {
     return
   }
 
-  draw_texture(get_image(upgrade.image_id), upgrade.pos)
+  tex := get_image(upgrade.image_id)
+
+  draw_texture(
+    tex,
+    upgrade.pos,
+    offset = linalg.round(Vec2{f32(tex.width), f32(tex.height)} * 0.5)
+  )
 }
 
 object_spawner_upgrade :: proc(obj: Object_Resource) {