"""
This shows how to use the CFFI dynamic (ABI) binding.  Note that is slower and more likely to run into silent errors.
But it doesnt require any C compiler to build.
"""
import pathlib
MODULE = pathlib.Path(__file__).parent

from raylib.dynamic import ffi, raylib as rl
from raylib.colors import *

rl.InitWindow(800,450,b"Raylib dynamic binding test")
rl.SetTargetFPS(60)

camera = ffi.new("struct Camera3D *",  [[ 18.0, 16.0, 18.0 ], [ 0.0, 0.0, 0.0 ], [ 0.0, 1.0, 0.0 ], 45.0, 0 ])

imageFile = str(MODULE / "examples/models/resources/heightmap.png").encode('utf-8')
image = rl.LoadImage(imageFile)
texture = rl.LoadTextureFromImage(image)
mesh = rl.GenMeshHeightmap(image, [ 16, 8, 16 ])
model = rl.LoadModelFromMesh(mesh)
print(model.materials) # SHOULD BE A pointer to a 'struct Material' but some is NULL pointer to 'Material' ?

model.materials[0].maps[rl.MAP_DIFFUSE].texture = texture
mapPosition = ( -8.0, 0.0, -8.0 )

rl.UnloadImage(image)

rl.SetCameraMode(camera[0], rl.CAMERA_ORBITAL)


while not rl.WindowShouldClose():
    rl.UpdateCamera(camera)
    rl.BeginDrawing()
    rl.ClearBackground(RAYWHITE)
    rl.BeginMode3D(camera[0])
    rl.DrawModel(model, mapPosition, 1.0, RED)
    rl.DrawGrid(20, 1.0)
    rl.EndMode3D()
    rl.DrawText(b"This mesh should be textured", 190, 200, 20, VIOLET)
    rl.EndDrawing()
rl.CloseWindow()


"""
Previously this failed to work in the same place the ctypes binding fails, accessing
materials of a model.  I though it was because Python can't dynamically tell the difference between a pointer and an array.
"""