Tutorial:Cosine - Revision history

Sandman: Cosine moved to Tutorial:Cosine: tutorial namespace

2007-08-09T00:15:01Z

Cosine moved to Tutorial:Cosine: tutorial namespace

←Older revision

Revision as of 00:15, 9 August 2007

Sandman at 22:44, 6 August 2007

2007-08-06T22:44:01Z

←Older revision		Revision as of 22:44, 6 August 2007
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	Some sine and cosine program. Check it out. More of example code, but useful anyway.		Some sine and cosine program. Check it out. More of example code, but useful anyway.
		+
		+	Note that this is code for Fenix versions [[0.93]] and up. Should the code work for other versions as well, be so kind to note this here.

	== Example code ==		== Example code ==

Sandman at 23:33, 29 May 2007

2007-05-29T23:33:10Z

←Older revision		Revision as of 23:33, 29 May 2007
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		+	[[Category:tutorials]]
		+
	Some sine and cosine program. Check it out. More of example code, but useful anyway.		Some sine and cosine program. Check it out. More of example code, but useful anyway.

Sandman at 23:32, 29 May 2007

2007-05-29T23:32:36Z

←Older revision		Revision as of 23:32, 29 May 2007
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	Or with seconds=0.25; cos_factor=6000;sin_factor=2000 something like this:<br>		Or with seconds=0.25; cos_factor=6000;sin_factor=2000 something like this:<br>
	http://wwwhome.cs.utwente.nl/~bergfi/fenix/wiki/cosine2.PNG		http://wwwhome.cs.utwente.nl/~bergfi/fenix/wiki/cosine2.PNG
		+
		+	Try fiddling around with the parameters yourself and she what you can conjure.

Sandman at 23:28, 29 May 2007

2007-05-29T23:28:20Z

←Older revision		Revision as of 23:28, 29 May 2007
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	This will result in something like:<br>		This will result in something like:<br>
	http://wwwhome.cs.utwente.nl/~bergfi/fenix/wiki/cosine.PNG		http://wwwhome.cs.utwente.nl/~bergfi/fenix/wiki/cosine.PNG
		+
		+	Or with seconds=0.25; cos_factor=6000;sin_factor=2000 something like this:<br>
		+	http://wwwhome.cs.utwente.nl/~bergfi/fenix/wiki/cosine2.PNG

Sandman at 23:22, 29 May 2007

2007-05-29T23:22:12Z

←Older revision		Revision as of 23:22, 29 May 2007
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	</pre>		</pre>
	Used in example: [[set_fps]](), [[new_map]](), [[map_clear]](), [[rand]](), [[key]](), [[let_me_alone]](), [[cos]](), [[sin]](), [[timer]], [[x]], [[y]]		Used in example: [[set_fps]](), [[new_map]](), [[map_clear]](), [[rand]](), [[key]](), [[let_me_alone]](), [[cos]](), [[sin]](), [[timer]], [[x]], [[y]]
		+
		+	This will result in something like:<br>
		+	http://wwwhome.cs.utwente.nl/~bergfi/fenix/wiki/cosine.PNG

Sandman at 23:21, 29 May 2007

2007-05-29T23:21:30Z

←Older revision		Revision as of 23:21, 29 May 2007
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	<pre>		<pre>
	Program cosine;		Program cosine;
		+	Const
		+	seconds = 2.3;
		+	ball_width = 20;
		+	ball_height = 20;
		+	screen_width = 320;
		+	screen_height = 200;
		+	screen_depth = 8;
		+	screen_fps = 60;
		+	cos_factor = 2000;
		+	sin_factor = 4000;
		+	timer_spawn = 0;
		+	timer_ball = 1;
	Begin		Begin

-	set_fps(60,0);	+	// make the movement a bit more smooth
		+	set_fps(screen_fps,0);

-	timer[1]= ~~200~~;	+	// spawn a ball process every <seconds> seconds with random colors.
		+	timer[timer_spawn]= seconds*100;
	Repeat		Repeat
-	if(timer[1]>=~~200~~)	+	if(timer[timer_spawn]>=seconds*100)
-	timer[1] = 0;	+	timer[timer_spawn]-=seconds*100;
-	x = new_map(20,20,8);	+	x = new_map(ball_width,ball_height,screen_depth);
	map_clear(0,x,rgb(rand(0,255),rand(0,255),rand(0,255)));		map_clear(0,x,rgb(rand(0,255),rand(0,255),rand(0,255)));
	ball(x);		ball(x);
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	Until(key(_esc))		Until(key(_esc))

		+	// kill all other remaining processes and exit
	let_me_alone();		let_me_alone();
		+	exit();

	End		End

	Process ball(graph)		Process ball(graph)
		+	Private
		+	int start_time;
	Begin		Begin

-	z = 0;	+	// remember starting time
		+	start_time = timer[timer_ball];
		+
		+	// position the ball according to the passed time (timer[timer_ball])
	Loop		Loop
-	x = ~~160~~+cos(z)*~~150~~;	+	x = screen_width /2 + cos((timer[timer_ball]-start_time)*cos_factor)
-	y = ~~100~~+sin(~~z2~~)~~90;~~	+	* (screen_width /2-ball_width /2);
-	~~z+=2000~~;	+	y = screen_height/2 + sin((timer[timer_ball]-start_time)*sin_factor)
		+	* (screen_height/2-ball_height/2);
	frame;		frame;
	End		End
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	End		End
	</pre>		</pre>
-	Used in example: [[set_fps]](), [[new_map]](), [[map_clear]](), [[key]](), [[let_me_alone]](), [[cos]](), [[sin]](), [[timer]], [[x]], [[y]]	+	Used in example: [[set_fps]](), [[new_map]](), [[map_clear]](), [[rand]](), [[key]](), [[let_me_alone]](), [[cos]](), [[sin]](), [[timer]], [[x]], [[y]]

Sandman at 22:59, 29 May 2007

2007-05-29T22:59:01Z

New page

Some sine and cosine program. Check it out. More of example code, but useful anyway.

== Example code ==
<pre>
Program cosine;
Begin

set_fps(60,0);

timer[1]= 200;
Repeat
if(timer[1]>=200)
timer[1] = 0;
x = new_map(20,20,8);
map_clear(0,x,rgb(rand(0,255),rand(0,255),rand(0,255)));
ball(x);
end
frame;
Until(key(_esc))

let_me_alone();

End

Process ball(graph)
Begin

z = 0;
Loop
x = 160+cos(z)*150;
y = 100+sin(z*2)*90;
z+=2000;
frame;
End

End
</pre>
Used in example: [[set_fps]](), [[new_map]](), [[map_clear]](), [[key]](), [[let_me_alone]](), [[cos]](), [[sin]](), [[timer]], [[x]], [[y]]