1 files changed, 106 insertions, 0 deletions
diff --git a/src/sprite.odin b/src/sprite.odin
new file mode 100644
index 0000000..af2fdf9
--- /dev/null
+++ b/src/sprite.odin
@@ -0,0 +1,106 @@
+package demonchime
+
+import "core:log"
+
+import rl "vendor:raylib"
+
+import "draw"
+
+Sprite :: struct {
+  image: rl.Texture2D,
+  anim_id: Animation_Id,
+  current_tag: Tag_Resource,
+  frame_time: f32,
+  current_frame: i32,
+
+  width: i32,
+  height: i32,
+  
+  pos: Vec2,
+  offset: Vec2,
+  rotation: f32,
+  scale: Vec2,
+
+  just_finished_loop: bool,
+}
+
+init_sprite :: proc(
+  sprite: ^Sprite, 
+  image_id: Image_Id,
+  anim_id: Maybe(Animation_Id) = nil,
+) -> bool {
+  sprite.image = get_image(image_id)
+
+  switch id in anim_id {
+  case Animation_Id:
+    sprite.anim_id = id
+  case nil:
+    sprite.anim_id = images[image_id].anim
+  }
+
+  anim := animations[sprite.anim_id]
+
+  sprite.width = i32(f32(sprite.image.width) / f32(anim.frame_count))
+  sprite.height = i32(sprite.image.height)
+
+  log.debug(sprite.width, anim.frame_count, sprite.anim_id)
+
+  sprite.scale = Vec2{1, 1}
+
+  return true
+}
+
+destroy_sprite :: proc(sprite: Sprite) {
+  rl.UnloadTexture(sprite.image)
+}
+
+set_sprite_active_tag :: proc(sprite: ^Sprite, tag_name: string) {
+  anim := animations[sprite.anim_id]
+  sprite.current_tag = anim.tags[tag_name]
+}
+
+update_sprite :: proc(sprite: ^Sprite, dt: f32) {
+  sprite.just_finished_loop = false
+
+  sprite.frame_time += dt
+
+  anim := animations[sprite.anim_id]
+
+  duration := f32(anim.frame_durations[sprite.current_frame]) / 1000
+
+  if sprite.frame_time > duration {
+    sprite.frame_time -= duration
+    sprite.current_frame += 1
+  }
+
+  tag := &sprite.current_tag
+
+  if sprite.current_frame < tag.from {
+    sprite.current_frame = tag.to
+    sprite.just_finished_loop = true
+  }
+  if sprite.current_frame > tag.to {
+    sprite.current_frame = tag.from
+    sprite.just_finished_loop = true
+  }
+}
+
+draw_sprite :: proc(
+  sprite: Sprite,
+) {
+  rect := draw.Rect{
+    {f32(sprite.width * sprite.current_frame), 0},
+    {f32(sprite.width), f32(sprite.height)},
+  }
+  
+  draw.texture_quad(
+    sprite.image,
+    rect,
+    sprite.pos,
+    sprite.offset,
+    sprite.rotation,
+    sprite.scale,
+  )
+
+  // log.debug(rect)
+}