Flashing / cls / View.Update

[TokenHerbz]

Hey, i got mass flashing happening with just words...

THis isn't the code, but heres the example

code:

loop     cls     put "Health: ", player.Health     if Somthing then          player.health += 5     end if     View.Update end loop

So somthing along the lines of that, Though i tryed many combinations of just CLS, just View.Update, Using both, In different spts aswell, And even trying to stop it with delays...

I can slow it with a delay, though then i cant do input, as the program stops, So, you can see im in a bit of a pickle, am i useing these wrong?

Please help, Thnaks

[beard0]

Have you used View.Set("offscreenonly")? It is necessary to do this before View.Update becomes effective.

[Flikerator]

Beard0 is right. View.Update is useless without View.Set("offscreenonly")

You will just be updating it another time. Each time a line of code is run in turing it updates the screen. If you have offscreenonly on it will only update the screen when you tell it to using View.Update() or View.UpdateArea().

[TokenHerbz]

Where do i add offscreenonly, and do i need the () After View.Update...

ALSO, Using getch, do i need Input.KeyDown??? To use the ARROW keys, etc?

[Cervantes]

tokenherbz wrote:

Where do i add offscreenonly, and do i need the () After View.Update...

ALSO, Using getch, do i need Input.KeyDown??? To use the ARROW keys, etc?

At the beginning, no, no, respectively.

To clarify the last question, it's best not to use getch and Input.KeyDown together. I was just discussing this in the usernames and password thread, although I really didn't do a good job. But nonetheless, you don't need Input.KeyDown to get arrow input:

code:

var c : string (1) loop     getch (c)     put c = KEY_RIGHT_ARROW end loop

[TokenHerbz]

so how do i use it ?

code:

var c : string (1) loop     getch (c)     if c = KEY_RIGHT_ARROW then          x += 1     end if end loop

Like so? does this work with Esc / A, the letters / numbers / Enter? Eveything on the keyboard?

[jamonathin]

tokenherbz wrote:

Like so? does this work with Esc / A, the letters / numbers / Enter? Eveything on the keyboard?

That's like asking, "can i use variables to represent the x and y values of a circle?" Drrrrr...... Well why dont you try. The best way to learn is through trial and error.

Ever been told not to touch a hot stove, then touched it? Learn through experience.

[Cervantes]

jamonathin wrote:

Ever been told not to touch a hot stove, then touched it? Learn through experience.

For something like this, yes. For many other things, learn from other's experiences.

[TokenHerbz]

Stupid getch, my program keeps saying, Waiting for input...

How do i use this correctly, i been trying to a while...

Im going to read more up on this, and hasch

mean while please help me a bit, these are very confusing...




Edit:::::

code:

setscreen("Graphics:300;300") View.Set("offscreenonly") var x, y: int := 150 var c: string(1) var s: int := 1 var co: int := 7 loop     cls     getch (c)         if c = KEY_RIGHT_ARROW then         x += 1     end if     if c = KEY_LEFT_ARROW then         x -= 1     end if     if c = KEY_UP_ARROW then         y += 1     end if     if c = KEY_DOWN_ARROW then         y -= 1     end if     if c = KEY_ENTER then         s += 1     end if     if c = KEY_SHIFT then         randint(co,1,100)     end if     if c = KEY_ESC then         exit     end if     drawfilloval(x,y,s,s,co)     View.Update end loop cls put "you quit"

try that, i have a problem...

A) Top left, theres a black box which i do not want there, it seems to was input all the time
B) it seems slow...
C) It cant *Multi command* (though i wont need that with my RPG*)

[Cervantes]

For this sort of thing, use Input.KeyDown.

[TokenHerbz]

alright, Then

Why is getch useful if i can just USE KeyDown?

What are the strengths of getch over keydown?

[Cervantes]

Getch is better for typing, or other things where only one key is pressed at a time and keys are generally not held for long.
Input.KeyDown is good for more complex input where multiple buttons may be held at the same time, and where a constant stream of boolean values on any specific key is required. (For example, we don't want to check if the right arrow is hit, we want to check if it is down.)

[TokenHerbz]

Alright, and it is bad to mix them?

Why is this?

[Cervantes]

This would be the third time this week I've been asked to explain that.

http://www.compsci.ca/v2/viewtopic.php?p=93573#93573.

I feel bad about that explaination. It's so terrible you might as well just take my word for it. The point I did try to get across in that little expose is to experiment for yourself to see why.