-- Lesson 23:  Models And Light.  The finished script, exactly as the lesson ends.

sceneEnable(true)
sceneSetBackground(10, 12, 20)
sceneSetAmbient(28, 30, 38)

local stone = materialNew()
materialSetColor(stone, 105, 105, 115)
materialSetRoughness(stone, 0.9)

local floor = nodeNew()
nodeSetMesh(floor, meshBox(24, 0.4, 24), stone)
nodeSetPosition(floor, 0, -0.2, 0)

local dragonModel = modelLoad("Singe/DragonModel.glb")
local dragon      = modelInstance(dragonModel)
nodeSetScale(dragon, 0.5)
nodeSetRotation(dragon, 0, -60, 0)

local clips = modelGetAnimations(dragonModel)

if #clips > 0 then
    animationPlay(dragon, 1, true)
else
    debugPrint("DragonModel.glb carries no animation clips.  The wings are turned by hand.")
end

local wingLeft  = nodeFind("wingL", dragon)
local wingRight = nodeFind("wingR", dragon)

local sun = lightNew(LIGHT_DIRECTIONAL)
nodeSetPosition(sun, -6, 9, 7)
nodeLookAt(sun, 0, 1.5, 0)
lightSetColor(sun, 255, 244, 224)
lightSetIntensity(sun, 1.8)
lightSetShadow(sun, true)

local torch = lightNew(LIGHT_POINT)
nodeSetPosition(torch, 3.5, 1.2, 3.0)
lightSetColor(torch, 255, 150, 70)
lightSetIntensity(torch, 14)
lightSetRange(torch, 12)

local camera = nodeNew()
nodeSetPosition(camera, 0, 2.6, 9)
nodeLookAt(camera, 0, 1.7, 0)
cameraSet(camera)
cameraSetPerspective(55, 0.1, 200)


function onOverlayUpdate()
    local flap = math.sin(singeGetTicks() / 260) * 22

    nodeSetRotation(wingLeft, flap, 0, 0)
    nodeSetRotation(wingRight, -flap, 0, 0)
    nodeRotate(dragon, 0, 0.25, 0)

    overlayClear()
    overlayPrint(2, 2, "Singe/DragonModel.glb")
    overlayPrint(2, 4, "animation clips in the file: " .. #clips)
    return OVERLAY_UPDATED
end