// The initialization method caused when a world object is created
World6::World6(WindowFramework* windowFrameworkPtr)
: m_windowFramework(windowFrameworkPtr),
m_title("title", COnscreenText::TS_plain),
m_sizescale(1),
m_sky(),
m_skyTex(NULL),
m_sun(),
m_sunTex(NULL),
m_orbitscale(1),
m_orbitRootMercury(),
m_orbitRootVenus(),
m_orbitRootMars(),
m_orbitRootEarth(),
m_orbitRootMoon(),
m_mercury(),
m_mercuryTex(NULL),
m_venus(),
m_venusTex(NULL),
m_mars(),
m_marsTex(NULL),
m_earth(),
m_earthTex(NULL),
m_moon(),
m_moonTex(NULL),
m_yearscale(1),
m_dayscale(1),
m_dayPeriodSun(NULL),
m_orbitPeriodMercury(NULL),
m_dayPeriodMercury(NULL),
m_orbitPeriodVenus(NULL),
m_dayPeriodVenus(NULL),
m_orbitPeriodEarth(NULL),
m_dayPeriodEarth(NULL),
m_orbitPeriodMoon(NULL),
m_dayPeriodMoon(NULL),
m_orbitPeriodMars(NULL),
m_dayPeriodMars(NULL),
m_mouse1EventText("label"),
m_skeyEventText("label"),
m_ykeyEventText("label"),
m_vkeyEventText("label"),
m_ekeyEventText("label"),
m_mkeyEventText("label"),
m_yearCounterText("label"),
m_yearCounter(0),
m_simRunning(true)
{
// The standard camera position and background initialization
m_windowFramework->get_graphics_window()->get_active_display_region(0)->
set_clear_color(Colorf(0, 0, 0, 0));
// base.disableMouse() // Note: mouse ain't enable by default in C++
NodePath camera = m_windowFramework->get_camera_group();
camera.set_pos(0, 0, 45);
camera.set_hpr(0, -90, 0);
// The global variables we used to control the speed and size of objects
m_yearscale = 60;
m_dayscale = m_yearscale / 365.0 * 5;
m_orbitscale = 10;
m_sizescale = 0.6;
load_planets(); // Load, texture, and position the planets
rotate_planets(); // Set up the motion to start them moving
// The standard title text that's in every tutorial
// Things to note:
// -fg represents the forground color of the text in (r,g,b,a) format
// -pos represents the position of the text on the screen.
// The coordinate system is a x-y based wih 0,0 as the center of the
// screen
// -align sets the alingment of the text relative to the pos argument.
// Default is center align.
// -scale set the scale of the text
// -mayChange argument lets us change the text later in the program.
// By default mayChange is set to 0. Trying to change text when
// mayChange is set to 0 will cause the program to crash.
m_title.set_text("Panda3D: Tutorial 1 - Solar System");
m_title.set_fg(Colorf(1, 1, 1, 1));
m_title.set_pos(LVecBase2f(0.8, -0.95));
m_title.set_scale(0.07);
m_title.reparent_to(m_windowFramework->get_aspect_2d());
m_mouse1EventText = gen_label_text(
"Mouse Button 1: Toggle entire Solar System [RUNNING]", 0);
m_skeyEventText = gen_label_text("[S]: Toggle Sun [RUNNING]", 1);
m_ykeyEventText = gen_label_text("[Y]: Toggle Mercury [RUNNING]", 2);
m_vkeyEventText = gen_label_text("[V]: Toggle Venus [RUNNING]", 3);
m_ekeyEventText = gen_label_text("[E]: Toggle Earth [RUNNING]", 4);
m_mkeyEventText = gen_label_text("[M]: Toggle Mars [RUNNING]", 5);
m_yearCounterText = gen_label_text("0 Earth years completed", 6);
m_yearCounter = 0; // year counter for earth years
m_simRunning = true; // boolean to keep track of the
// state of the global simulation
// Events
// Each self.accept statement creates an event handler object that will call
// the specified function when that event occurs.
// Certain events like "mouse1", "a", "b", "c" ... "z", "1", "2", "3"..."0"
// are references to keyboard keys and mouse buttons. You can also define
// your own events to be used within your program. In this tutorial, the
// event "newYear" is not tied to a physical input device, but rather
// is sent by the function that rotates the Earth whenever a revolution
// completes to tell the counter to update
// Note: need to listen to input events
m_windowFramework->enable_keyboard();
PandaFramework* pfw = m_windowFramework->get_panda_framework();
// Exit the program when escape is pressed
pfw->define_key("escape", "sysExit", sys_exit, NULL);
pfw->define_key("mouse1", "handleMouseClick", call_handle_mouse_click, this);
pfw->define_key("e", "handleEarth", call_handle_earth, this);
pfw->define_key("s", // message name
"togglePlanetSun", // Note: event description
call_toggle_planet<P_sun>, // function to call
this); // arguments to be passed to togglePlanet
// See togglePlanet's definition below for
// an explanation of what they are
// Repeat the structure above for the other planets
pfw->define_key("y", "togglePlanetMercury",
call_toggle_planet<P_mercury>, this);
pfw->define_key("v", "togglePlanetVenus",
call_toggle_planet<P_venus>, this);
pfw->define_key("m", "togglePlanetMars",
call_toggle_planet<P_mars>, this);
EventHandler::get_global_event_handler()->add_hook("newYear",
call_inc_year,
this);
}
