Adventure Game Studio

I hope this is okay in the tech forum, I've never posted in here... but it feels like it may be a bit more than a beginners question...

So how would one [if it's possible] go about doing a clock that always shows what the actual time is. As per the topic subject - just like the one on the clock tower in CMI.

I'm not really very proficient at scripting, so it may be a little [a lot] over my head, but if someone can point me in the right direction (or just do the whole thing for me  :P) that'd be helpful, thanks.

do a search its been answered many times

http://www.adventuregamestudio.co.uk/yabb/index.php?topic=8559.0

should explain it.

Basically, all you need is:

int hour = GetTime(1);
int minute = GetTime(2);
int second = GetTime(3);

And once you have the minute and hour, you can either:

- create 24 hour hand sprites and 24 minute hand sprites, and raw draw the appropriate one onto the clock face every time the time changes

- use the raw drawing functions and the floating point maths plugin to raw draw triangles representing the hands when the time changes

eg in the room script

int currHour = 0;
int currMinute = 0;

function drawClockHand(int x, int y, int length, int width, int angle)
{
  int fx = int_to_float(x);
  int fy = int_to_float(y);
  int fl = int_to_float(length);
  int fw = int_to_float(width);

  int fa = angle_from_degrees(int_to_float(angle));
  int sina = sin(fa);
  int cosa = cos(fa);

  // the point
  int p1x = fadd(fx, fmul(fl, sina));
  int p1y = fsub(fy, fmul(fl, cosa));

  // the base
  int dx = fadd(fx, fmul(fw, sina));
  int dy = fsub(fy, fmul(fw, cosa));

  int p2x = fadd(fsub(fx, dx), fmul(fw, cosa));
  int p2y = fadd(fsub(fy, dy), fmul(fw, sina));

  int p3x = fsub(fsub(fx, dx), fmul(fw, cosa));
  int p3y = fsub(fsub(fy, dy), fmul(fw, sina));

  RawDrawTriangle(p1x, p1y, p2x, p2y, p3x, p3y);
}

in the room's repeatedly_execute_always:

int nextHour = GetTime(1);
int nextMinute = GetTime(2);

if (nextMinute != currMinute || nextHour != currHour)
{
  currMinute = nextMinute;
  currHour = nextHour;
  RawDrawImage(140, 10, SPRITE_CLOCKWITHNOHANDS);
  int minuteAngle = 6*nextMinute; // 360/60 = 6
  int hourAngle = 15*nextHour; // 360/24 = 15
  // draw an offset shadow
  RawSetColour(0); // black
  drawClockHand(161, 31, 20, 1, minuteAngle);
  drawClockHand(161, 31, 14, 2, hourAngle);
  // draw the hands
  RawSetColour(25620); // gunmetal
  drawClockHand(160, 30, 20, 1, minuteAngle);
  drawClockHand(160, 30, 14, 2, hourAngle);
}

Totally untested but you get the idea.

Cheers,
Steve

 

Quote from: SteveMcCrea on Sun 22/08/2004 19:05:27
- create 24 hour hand sprites and 24 minute hand sprites, and raw draw the appropriate one onto the clock face every time the time changes

well unless he'd want a very original clock, i think he'd only need 12 sprites for each hand ;)

unless you were referring to in-betweens ...  :-\ hmm