Initial commit

1 files changed, 88 insertions, 0 deletions

diff --git a/src/draw/sprite.odin b/src/draw/sprite.odin
new file mode 100644
index 0000000..e62f650
--- /dev/null
+++ b/src/draw/sprite.odin
@@ -0,0 +1,88 @@
+package draw
+
+import "core:fmt"
+import "core:image"
+import "core:image/qoi"
+
+import sg "shared:sokol/gfx"
+
+Sprite :: struct {
+  image: sg.Image,
+  anim: Animation,
+  active_anim: u32,
+  frame_time: f32,
+  current_frame: i32,
+}
+
+init_sprite :: proc(
+  sprite: ^Sprite, 
+  path: string,
+  anim: Animation = {},
+) -> bool {
+  fmt.println(path)
+  img, img_err := qoi.load_from_file(path)
+  if img_err != nil {
+    fmt.println("could not load image")
+    return false
+  }
+  defer image.destroy(img)
+
+  sprite.image = sg.make_image({
+    width = i32(img.width),
+    height = i32(img.height),
+    data = {
+      mip_levels = {
+        0 = {ptr=&img.pixels.buf[0], size=len(img.pixels.buf)},
+      },
+    },
+  })
+  sprite.anim = anim
+
+  return true
+}
+
+set_sprite_active_tag :: proc(sprite: ^Sprite, tag_name: string) {
+  sprite.active_anim = sprite.anim.frame_tags_indices[tag_name]
+}
+
+update_sprite :: proc(sprite: ^Sprite, dt: f32) {
+  sprite.frame_time += dt
+
+  tag := sprite.anim.frame_tags[sprite.active_anim]
+  frame := sprite.anim.frames[sprite.current_frame]
+  duration := f32(frame.duration) / 1000
+
+  if sprite.frame_time > duration {
+    sprite.frame_time -= duration
+    sprite.current_frame += 1
+  }
+
+  if sprite.current_frame < tag.from {
+    sprite.current_frame = tag.to
+  }
+  if sprite.current_frame > tag.to {
+    sprite.current_frame = tag.from
+  }
+}
+
+draw_sprite :: proc(
+  r: ^Renderer,
+  sprite: Sprite,
+  pos: Vec2,
+  offset := Vec2{0, 0},
+  scale := Vec2{1, 1},
+) {
+  frame := sprite.anim.frames[sprite.current_frame]
+  
+  draw_texture(
+    r,
+    sprite.image,
+    Rect {
+      Vec2{f32(frame.rect.x), f32(frame.rect.y)},
+      Vec2{f32(frame.rect.w), f32(frame.rect.h)},
+    },
+    pos,
+    offset,
+    scale,
+  )
+}