111 lines
2.5 KiB
Rust
111 lines
2.5 KiB
Rust
pub use canary_types::*;
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#[macro_export]
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macro_rules! export_abi {
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($panel_impl: ident) => {
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#[no_mangle]
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pub extern "C" fn bind_panel(panel: u32) -> u32 {
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::canary_script::abi::bind_panel::<$panel_impl>(panel)
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}
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#[no_mangle]
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pub extern "C" fn update(dt: f32) {
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::canary_script::abi::update(dt)
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}
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#[no_mangle]
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pub extern "C" fn draw() {
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::canary_script::abi::draw()
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}
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#[no_mangle]
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pub extern "C" fn on_cursor_event(kind: u32, x: f32, y: f32) {
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::canary_script::abi::on_cursor_event(kind, x, y)
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}
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};
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}
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pub mod abi {
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use super::*;
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use num_traits::FromPrimitive;
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static mut PANEL_IMPLS: Vec<Box<dyn PanelImpl>> = Vec::new();
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pub fn bind_panel<T: BindPanel>(panel: u32) -> u32 {
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unsafe {
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let panel = Panel(panel);
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let panel_impl = T::bind(panel);
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let id = PANEL_IMPLS.len() as u32;
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PANEL_IMPLS.push(panel_impl);
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id
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}
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}
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pub fn update(dt: f32) {
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unsafe {
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for panel in PANEL_IMPLS.iter_mut() {
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panel.update(dt);
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}
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}
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}
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pub fn draw() {
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unsafe {
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for panel in PANEL_IMPLS.iter_mut() {
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panel.draw();
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}
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}
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}
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pub fn on_cursor_event(kind: u32, x: f32, y: f32) {
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let panel = unsafe { &mut PANEL_IMPLS[0] };
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let at = canary_types::Vec2 { x, y };
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let kind = CursorEventKind::from_u32(kind).unwrap();
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panel.on_cursor_event(kind, at);
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}
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}
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pub trait BindPanel {
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fn bind(panel: Panel) -> Box<dyn PanelImpl>;
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}
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pub trait PanelImpl {
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fn update(&mut self, dt: f32);
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fn draw(&mut self);
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fn on_cursor_event(&mut self, kind: CursorEventKind, at: Vec2);
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}
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#[repr(transparent)]
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#[derive(Copy, Clone)]
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pub struct Panel(u32);
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impl Panel {
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pub unsafe fn bind(id: u32) -> Self {
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Self(id)
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}
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pub fn draw_triangle(&self, v1: Vec2, v2: Vec2, v3: Vec2, color: Color) {
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unsafe {
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UiPanel_drawTriangle(
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self.0, v1.x, v1.y, v2.x, v2.y, v3.x, v3.y, color.r, color.g, color.b, color.a,
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)
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}
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}
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}
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extern "C" {
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fn UiPanel_drawTriangle(
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panel: u32,
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x1: f32,
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y1: f32,
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x2: f32,
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y2: f32,
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x3: f32,
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y3: f32,
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r: f32,
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g: f32,
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b: f32,
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a: f32,
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);
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}
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