Function CheckRenderCamera

engine/render/src/render/render_script_camera.cpp:65–96

    static RenderScriptCameraModule g_RenderScriptCameraModule = { 0 };

    RenderCamera* CheckRenderCamera(lua_State* L, int index, HRenderContext render_context)
    {
        RenderCamera* camera = 0x0;

        if(lua_isnumber(L, index))
        {
            HRenderCamera h_camera = (HRenderCamera) lua_tonumber(L, index);
            camera = render_context->m_RenderCameras.Get(h_camera);

            if (!camera)
            {
                return (RenderCamera*) (uintptr_t) luaL_error(L, "Invalid handle.");
            }
        }
        else
        {
            dmMessage::URL url;
            if (dmScript::ResolveURL(L, index, &url, 0) != dmMessage::RESULT_OK)
            {
                return (RenderCamera*) (uintptr_t) luaL_error(L, "Could not resolve URL.");
            }

            camera = GetRenderCameraByUrl(g_RenderScriptCameraModule.m_RenderContext, url);
            if (camera == 0x0)
            {
                char buffer[256];
                dmScript::UrlToString(&url, buffer, sizeof(buffer));
                return (RenderCamera*) (uintptr_t) luaL_error(L, "Camera '%s' not found.", buffer);
            }
        }
        return camera;
    }

    // Resolve a camera from an optional argument. If no argument is given (or nil),
    // prefer the last enabled camera (matching default render script behavior).