allocator: std.mem.Allocator,

lastUpdateFrame: u64 = 0,
arena: std.heap.ArenaAllocator,
bodyIds: std.ArrayList(physics.BodyId),

pub var NeonObjectTable = core.EngineObjectVTable.from(@This(), "extras.PhysicsObjectList");

pub fn create(allocator: std.mem.Allocator) !*@This() {
    const self = try allocator.create(@This());

    self.* = .{
        .allocator = allocator,
        .arena = std.heap.ArenaAllocator.init(allocator),
        .bodyIds = std.ArrayList(physics.BodyId).init(allocator),
    };

    if (core.getEngineObject(igutils.TopBar)) |topbar| {
        topbar.addMenuObject(self, "Physis Objects") catch {};
    }

    return self;
}

pub fn windowOpen(entry: *igutils.MenuEntry, dt: f64) void {
    _ = dt;
    const self: *@This() = @ptrCast(@alignCast(entry.ctx));
    self.bodyIds.clearRetainingCapacity();

    physics.context().system.getBodyIds(&self.bodyIds) catch return;

    if (ig.begin("Physics Objects", &entry.open, .{})) {
        ig.textf("total Physics Objects count: {d}", .{self.bodyIds.items.len});
        for (self.bodyIds.items) |bodyId| {
            ig.textf("body Id: {any}", .{bodyId});
        }
    }
    ig.end();
}

pub fn destroy(self: *@This()) void {
    self.arena.deinit();
    self.bodyIds.deinit();
    self.allocator.destroy(self);
}

const std = @import("std");
const backlog = @import("Backlog");
const core = backlog.core;
const rend = backlog.rend;
const ig = backlog.imgui.api;
const igutils = backlog.imgui.utils;
const physics = backlog.physics;