Raylib bindings failing to build when animating a model

[diegoxter]

V version: V 0.4.10 1070378, press to see full `v doctor` output

V full version	V 0.4.10 1070378a4693876e685b4805f11c16fd86237e2b.1070378
OS	linux, Debian GNU/Linux 12 (bookworm)
Processor	4 cpus, 64bit, little endian, Intel(R) Core(TM) i5-2520M CPU @ 2.50GHz
Memory	1.27GB/3.7GB
V executable	/home/adriego/Code/tools/v/v
V last modified time	2025-05-07 16:16:50
V home dir	OK, value: /home/adriego/Code/tools/v
VMODULES	OK, value: /home/adriego/.vmodules
VTMP	OK, value: /tmp/v_1000
Current working dir	OK, value: /home/adriego/Code/projects/vling
Git version	git version 2.39.5
V git status	1070378a
.git/config present	true
cc version	cc (Debian 12.2.0-14) 12.2.0
gcc version	gcc (Debian 12.2.0-14) 12.2.0
clang version	N/A
tcc version	tcc version 0.9.28rc 2025-02-13 HEAD@f8bd136d (x86_64 Linux)
tcc git status	thirdparty-linux-amd64 696c1d84
emcc version	N/A
glibc version	ldd (Debian GLIBC 2.36-9+deb12u10) 2.36

What did you do?
./v -g -o vdbg cmd/v && ./vdbg main.v && main

module main

import raylib as r

const screen_width = 800
const screen_height = 450
const max_columns = 20

fn main() {
	r.init_window(screen_width, screen_height, 'Test')

	mut camera := r.Camera{}
	camera.position = r.Vector3{f32(0.0), f32(2.0), f32(4.0)}
	camera.target = r.Vector3{f32(0.0), f32(2.0), f32(0.0)}
	camera.up = r.Vector3{f32(0.0), f32(1.0), f32(0.0)}
	camera.fovy = f32(60.0)
	camera.projection = int(r.CameraProjection.camera_perspective)

	// Animations
	filepath :="assets/Rogue.gltf"
	model := r.load_model(filepath)
	mut anims := &r.ModelAnimation{};
	anim_count := 0;
	anims = r.load_model_animations(filepath, &anim_count);
	mut current_frame := 0;
	//

	mut camera_mode := r.CameraMode.camera_first_person

	mut heights := [max_columns]f32{}
	mut positions := [max_columns]r.Vector3{}
	mut colors := [max_columns]r.Color{}

	mut i := 0
	for i < max_columns {
		heights[i] = f32(r.get_random_value(1, 12))
		positions[i] = r.Vector3{f32(r.get_random_value(-15, 15)), heights[i] / 2.0, f32(r.get_random_value(-15,
			15))}
		colors[i] = r.Color{u8(r.get_random_value(20, 255)), u8(r.get_random_value(10,
			255)), 30, 255}

		i++
	}

	// TODO disable this on prod
	r.enable_cursor()
	r.set_target_fps(60)

	for (!r.window_should_close()) {
		if r.is_key_pressed(int(r.KeyboardKey.key_two)) {
			camera_mode = r.CameraMode.camera_first_person
			camera.up = r.Vector3{f32(0.0), f32(1.0), f32(0.0)}
		}

		if r.is_key_pressed(int(r.KeyboardKey.key_three)) {
			camera_mode = r.CameraMode.camera_third_person
			camera.up = r.Vector3{f32(0.0), f32(1.0), f32(0.0)}
		}

			 if r.is_key_pressed(int(r.KeyboardKey.key_space))
        {
            current_frame++;
            unsafe {
							r.update_model_animation(model, anims[0], current_frame)
							if current_frame >= anims[0].frame_count {
								current_frame = 0
							}
						}
        }

		r.update_camera(&camera, int(camera_mode))

		r.begin_drawing()
		r.clear_background(r.raywhite)

		r.begin_mode_3d(camera)
		r.draw_plane(r.Vector3{f32(0.0), f32(0.0), f32(0.0)}, r.Vector2{f32(32.0), f32(32.0)},
			r.lightgray)
		r.draw_cube(r.Vector3{f32(-16.0), f32(2.5), f32(0.0)}, f32(1.0), f32(5.0), f32(32.0),
			r.blue)
		r.draw_cube(r.Vector3{f32(16.0), f32(2.5), f32(0.0)}, f32(1.0), f32(5.0), f32(32.0),
			r.lime)
		r.draw_cube(r.Vector3{f32(0.0), f32(2.5), f32(16.0)}, f32(32.0), f32(5.0), f32(1),
			r.gold)

		i = 0
		for i < max_columns {
			r.draw_cube(positions[i], f32(2.0), heights[i], f32(2.0), colors[i])
			r.draw_cube_wires(positions[i], f32(2.0), heights[i], f32(2.0), r.maroon)

			i++
		}

		// Draw player cube
		if camera_mode == r.CameraMode.camera_third_person {
			r.draw_cube(camera.target, f32(0.5), f32(0.5), f32(0.5), r.purple)
			r.draw_cube_wires(camera.target, f32(0.5), f32(0.5), f32(0.5), r.darkpurple)
		}

			r.draw_model(
				model,
				r.Vector3{f32(0.0), f32(0), f32(0.0)},
				f32(1),
				r.white
			)

		r.end_mode_3d()

		// r.draw_text("Haha!", 190, 200, 20, r.lightgray)

		r.end_drawing()
	}

	r.unload_model(model)
	r.unload_model_animations(anims, anim_count)
	r.close_window()
}

What did you see?

================== C compilation error (from tcc): ==============
cc: /tmp/v_1000/main.01JTPXA4B4Y2Y7NHCKZNASMWE8.tmp.c:6271: error: field not found: bone_count
=================================================================
(You can pass `-cg`, or `-show-c-output` as well, to print all the C error messages).
builder error: 
==================
C error found. It should never happen, when compiling pure V code.
This is a V compiler bug, please report it using `v bug file.v`,
or goto https://github.com/vlang/v/issues/new/choose .
You can also use #help on Discord: https://discord.gg/vlang .

What did you expect to see?

Raylib creating the window and allowing me to check on the animation by pressing the spacebar

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[huly-for-github]

Connected to Huly®: V_0.6-22805

[jorgeluismireles]

My installation of raylib can't find file <raylib.h>. I can't find docs explaining how to proceed.

$ v install raylib
Scanning `raylib`...
Updating module `raylib` in `~/.vmodules/raylib`...
Updated module `raylib`.
$ v run 24434.v 
builder error: Header file <raylib.h>, needed for module `raylib` was not found. Please install the 
corresponding development headers.

[diegoxter]

My installation of raylib can't find file <raylib.h>. I can't find docs explaining how to proceed.

$ v install raylib
Scanning `raylib`...
Updating module `raylib` in `~/.vmodules/raylib`...
Updated module `raylib`.
$ v run 24434.v 
builder error: Header file <raylib.h>, needed for module `raylib` was not found. Please install the 
corresponding development headers.

You need to install the headers, check raylib docs. The V package just install the wrapper, not the library per se

[jorgeluismireles]

Follow instructions from https://github.com/raysan5/raylib/wiki/Working-on-GNU-Linux

• installed ok using make (vlang/raylib doc shoud put a link).
• https://github.com/vlang/raylib/blob/main/examples/hello.v works
• I got same error with your program.

has no member named ‘bone_count’; did you mean ‘boneCount’?:

/tmp/v_1000/24434.01JTR9G0MRNW4CHSKA6HA5X60N.tmp.c:6271: error: field not found: bone_count
=================================================================================
======== Output of the C Compiler (cc) ========
/tmp/v_1000/24434.01JTR9G0MRNW4CHSKA6HA5X60N.tmp.c: In function ‘main__main’:
/tmp/v_1000/24434.01JTR9G0MRNW4CHSKA6HA5X60N.tmp.c:6271:101: error: ‘raylib__ModelAnimation’ {aka ‘struct ModelAnimation’} has no member named ‘bone_count’; did you mean ‘boneCount’?
 6271 |         raylib__ModelAnimation* anims = ((raylib__ModelAnimation*)memdup(&(raylib__ModelAnimation){.bone_count = 0,.frame_count = 0,.bones = 0,.frame_poses = 0,.name = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},}, sizeof(raylib__ModelAnimation)));

[diegoxter]

Im trying to figure things out but it seems like its a wrapper error, not necessarily an issue with the compiler

[jorgeluismireles]

Seems wrapper is not converted some fields to C pascalCase

ModelAnimation’} has no member named ‘frame_count’; did you mean ‘frameCount’?
ModelAnimation’} has no member named ‘frame_poses’; did you mean ‘framePoses’?
ModelAnimation’} has no member named ‘frame_count’; did you mean ‘frameCount’?

[diegoxter]

maybe @spytheman or @EmmaTheMartian can help (even though this should be reported on the raylib github)

[diegoxter]

For context:

	model_animations := r.load_model_animations(filepath, &anims_count)
	unsafe {
			println(typeof(model_animations[anim_index].frame_count))
			println(model_animations[0].frame_count)
	}

the type of the frame_count is correctly printed as an int, but when trying to access it it fails