4 files changed, 65 insertions, 1 deletions
diff --git a/src/assets.odin b/src/assets.odin
index 3a3f64c..37e9ee9 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}, "run"={from = 6, to = 13}, "jump_trans"={from = 16, to = 16}, "jump_down"={from = 17, to = 18}, "idle"={from = 0, to = 5}, "sleep"={from = 19, to = 22}}},
+  .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 = {
diff --git a/src/draw.odin b/src/draw.odin
index 6507e03..2724ce3 100644
--- a/src/draw.odin
+++ b/src/draw.odin
@@ -65,6 +65,10 @@ draw_end_frame :: proc() {
   rl.EndDrawing()
 }
 
+draw_circle :: proc(pos: Vec2, rad: f32) {
+  rl.DrawCircle(i32(pos.x), i32(pos.y), rad, _color_to_rl(renderer.tint))
+}
+
 draw_rect :: proc(rect: Rect) {
   assert(rect.size.x > 0 && rect.size.y > 0)
 
diff --git a/src/player.odin b/src/player.odin
index debfd44..990a7d1 100644
--- a/src/player.odin
+++ b/src/player.odin
@@ -23,6 +23,8 @@ PLAYER_DASH_COOLDOWN :: 0.3
 PLAYER_GUN_HEIGHT :: 0
 PLAYER_GUN_DIST :: 5 // how far out to hold the gun
 
+PLAYER_SCARF_DIST :: 5
+
 Player_State :: enum {
   DEFAULT,
   DASH,
@@ -33,6 +35,7 @@ player: struct {
   body: phys.Body_Handle,
   sprite: Sprite,
   gun_sprite: Sprite,
+  scarf: Tail(7),
   jump_buffer: f32,
   coyote_time: f32,
   dash_cooldown: f32,
@@ -66,6 +69,13 @@ init_player :: proc() {
     -PLAYER_GUN_DIST,
     math.round(f32(player.gun_sprite.height / 2)),
   }
+
+  player.scarf = {
+    point_max_dist = 2,
+    point_rad = 2,
+    color_start = [4]f32{0.18, 0.13, 0.18, 1} * 0.5,
+    color_end = {0.18, 0.13, 0.18, 1},
+  }
 }
 
 deinit_player :: proc() {
@@ -294,10 +304,20 @@ update_player :: proc(dt: f32) {
 
   state.camera_target = _get_camera_target_pos()
 
+  scarf_dist: f32 = PLAYER_SCARF_DIST
+  if _get_input_dir() != 0 {
+    scarf_dist -= 1
+  }
+  scarf_pos := linalg.round(
+    pos + Vec2{-scarf_dist * player.sprite.scale.x, 0},
+  )
+  set_tail_position(&player.scarf, scarf_pos, dt)
+
   _change_rooms()
 }
 
 draw_player :: proc() {
+  draw_tail(player.scarf)
   draw_sprite(player.sprite)
   if player.state != .DASH {
     draw_sprite(player.gun_sprite)
diff --git a/src/tail.odin b/src/tail.odin
new file mode 100644
index 0000000..2184444
--- /dev/null
+++ b/src/tail.odin
@@ -0,0 +1,40 @@
+package demonchime
+
+import "core:math"
+import "core:math/linalg"
+
+Tail :: struct($N: int) {
+  points: [N]Vec2,
+  point_max_dist: f32,
+  point_rad: f32,
+  color_start: Color,
+  color_end: Color,
+}
+
+set_tail_position :: proc(tail: ^Tail($N), pos: Vec2, dt: f32) {
+  tail.points[0] = pos
+  for i in 1..<len(tail.points) {
+    prev := tail.points[i - 1]
+    cur := &tail.points[i]
+
+    cur.y += 50 * dt
+
+    dist := linalg.length2(prev - cur^)
+    if dist > tail.point_max_dist*tail.point_max_dist {
+      dir := linalg.normalize0(cur^ - prev)
+      cur^ = prev + dir * (tail.point_max_dist - 1)
+    }
+  }
+}
+
+draw_tail :: proc(tail: Tail($N)) {
+  for point, i in tail.points {
+    renderer.tint = linalg.lerp(
+      tail.color_start,
+      tail.color_end,
+      f32(i)/len(tail.points),
+    )
+    draw_circle(point, tail.point_rad)
+  }
+  renderer.tint = {1, 1, 1, 1}
+}