//hellolaunch

//First, we'll clear the terminal screen to make it look nice
CLEARSCREEN.

NOTIFY("HERE WE GO.").

//Next, we'll lock our throttle to 100%.
LOCK THROTTLE TO 1.0.   // 1.0 is the max, 0.0 is idle.

//This is our countdown loop, which cycles from 10 to 0
PRINT "Counting down:".
FROM {local countdown is 10.} UNTIL countdown = 0 STEP {SET countdown to countdown - 1.} DO {
    PRINT "..." + countdown.
    WAIT 1. // pauses the script here for 1 second.
}

//This is a trigger that constantly checks to see if our thrust is zero.
//If it is, it will attempt to stage and then return to where the script
//left off. The PRESERVE keyword keeps the trigger active even after it
//has been triggered.
WHEN MAXTHRUST = 0 THEN {
    PRINT "Staging".
    STAGE.
    PRESERVE.
}.

//This will be our main control loop for the ascent. It will
//cycle through continuously until our apoapsis is greater
//than 100km. Each cycle, it will check each of the IF
//statements inside and perform them if their conditions
//are met
SET MYSTEER TO HEADING(90,90).
LOCK STEERING TO MYSTEER. // from now on we'll be able to change steering by just assigning a new value to MYSTEER
UNTIL SHIP:APOAPSIS > 100000 { //Remember, all altitudes will be in meters, not kilometers

    //For the initial ascent, we want our steering to be straight
    //up and rolled due east
    IF SHIP:VELOCITY:SURFACE:MAG < 100 {
        //This sets our steering 90 degrees up and yawed to the compass
        //heading of 90 degrees (east)
        SET MYSTEER TO HEADING(90,90).

    //Once we pass 100m/s, we want to pitch down ten degrees
    } ELSE IF SHIP:VELOCITY:SURFACE:MAG >= 100 AND SHIP:VELOCITY:SURFACE:MAG < 200 {
        SET MYSTEER TO HEADING(90,80).
        PRINT "Pitching to 80 degrees" AT(0,15).
        PRINT ROUND(SHIP:APOAPSIS,0) AT (0,16).

    //Each successive IF statement checks to see if our velocity
    //is within a 100m/s block and adjusts our heading down another
    //ten degrees if so
    } ELSE IF SHIP:VELOCITY:SURFACE:MAG >= 200 AND SHIP:VELOCITY:SURFACE:MAG < 300 {
        SET MYSTEER TO HEADING(90,70).
        PRINT "Pitching to 70 degrees" AT(0,15).
        PRINT ROUND(SHIP:APOAPSIS,0) AT (0,16).

    } ELSE IF SHIP:VELOCITY:SURFACE:MAG >= 300 AND SHIP:VELOCITY:SURFACE:MAG < 400 {
        SET MYSTEER TO HEADING(90,60).
        PRINT "Pitching to 60 degrees" AT(0,15).
        PRINT ROUND(SHIP:APOAPSIS,0) AT (0,16).

    } ELSE IF SHIP:VELOCITY:SURFACE:MAG >= 400 AND SHIP:VELOCITY:SURFACE:MAG < 500 {
        SET MYSTEER TO HEADING(90,50).
        PRINT "Pitching to 50 degrees" AT(0,15).
        PRINT ROUND(SHIP:APOAPSIS,0) AT (0,16).

    } ELSE IF SHIP:VELOCITY:SURFACE:MAG >= 500 AND SHIP:VELOCITY:SURFACE:MAG < 600 {
        SET MYSTEER TO HEADING(90,40).
        PRINT "Pitching to 40 degrees" AT(0,15).
        PRINT ROUND(SHIP:APOAPSIS,0) AT (0,16).

    } ELSE IF SHIP:VELOCITY:SURFACE:MAG >= 600 AND SHIP:VELOCITY:SURFACE:MAG < 700 {
        SET MYSTEER TO HEADING(90,30).
        PRINT "Pitching to 30 degrees" AT(0,15).
        PRINT ROUND(SHIP:APOAPSIS,0) AT (0,16).

    } ELSE IF SHIP:VELOCITY:SURFACE:MAG >= 700 AND SHIP:VELOCITY:SURFACE:MAG < 800 {
        SET MYSTEER TO HEADING(90,11).
        PRINT "Pitching to 20 degrees" AT(0,15).
        PRINT ROUND(SHIP:APOAPSIS,0) AT (0,16).

    //Beyond 800m/s, we can keep facing towards 10 degrees above the horizon and wait
    //for the main loop to recognize that our apoapsis is above 100km
    } ELSE IF SHIP:VELOCITY:SURFACE:MAG >= 800 {
        SET MYSTEER TO HEADING(90,10).
        PRINT "Pitching to 10 degrees" AT(0,15).
        PRINT ROUND(SHIP:APOAPSIS,0) AT (0,16).

    }.

}.

PRINT "100km apoapsis reached, cutting throttle".

//At this point, our apoapsis is above 100km and our main loop has ended. Next
//we'll make sure our throttle is zero and that we're pointed prograde
LOCK THROTTLE TO 0.

//This sets the user's throttle setting to zero to prevent the throttle
//from returning to the position it was at before the script was run.
SET SHIP:CONTROL:PILOTMAINTHROTTLE TO 0.