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package demonchime
import "core:log"
import "core:math/linalg"
import rl "vendor:raylib"
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)
sprite.scale = Vec2{1, 1}
return true
}
set_sprite_active_tag :: proc(sprite: ^Sprite, tag_name: string) {
anim := animations[sprite.anim_id]
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
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 := Rect {
{f32(sprite.width * sprite.current_frame), 0},
{f32(sprite.width), f32(sprite.height)},
}
draw_texture(
sprite.image,
rect,
sprite.pos,
sprite.offset,
sprite.rotation,
sprite.scale,
)
}
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