flecs-zig-ble/src/entity.zig

const c = @import("./c.zig");

const Lookup = @import("./main.zig").Lookup;
const World = @import("./world.zig").World;

pub fn Entity(comptime ctx: anytype) type {
    return struct {
        world: *World(ctx),
        raw: c.ecs_entity_t,

        const Self = @This();

        pub fn fromRaw(world: *World(ctx), raw: c.ecs_entity_t) Self {
            return .{ .world = world, .raw = raw };
        }

        pub fn isValid(self: Self) bool {
            return c.ecs_is_valid(self.world.raw, self.raw);
        }

        pub fn isAlive(self: Self) bool {
            return c.ecs_is_alive(self.world.raw, self.raw);
        }

        pub fn get(self: Self, comptime T: type) ?*const T {
            const id = Lookup(ctx, T).id;
            return @alignCast(@ptrCast(c.ecs_get_id(self.world.raw, self.raw, id)));
        }

        pub fn set(self: Self, comptime T: type, value: T) void {
            const id = Lookup(ctx, T).id;
            _ = c.ecs_set_id(self.world.raw, self.raw, id, @sizeOf(T), &value);
        }
    };
}