AI in maps

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Summary:

Making an AI player in a map that the user has to avoid.

AI in maps

emmit_212 11 May 2011 13:01

I want to make a * symbol move around the map and the player has to avoid it.
So far I have…

randInt(-1,1)
C+Ans(" "=sub(Str2,16(C-1+Ans)+D,1->C

I just used the code from the collision detection section on movement in maps.
My question is, the AI piece works but the player piece moves really slow, how can I get it to move when you use the arrow keys each time?

Re: AI in maps

rhombus p 11 May 2011 15:22

It depends on what the rest of you code looks like. lemme see the rest of you loop and i can see if it can be speed up at all

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Re: AI in maps

emmit_212 12 May 2011 02:37

4->A:8->B
2->C:2->D
"XXXXXXXXXXXXXXXXX             XXX X X XXXXX X XXX X X X     X XXX X   X XXX X XXX X XXX X   XXXX             XXXXXXXXXXXXXXXXXX"->Str2
Output(1,1,Ans
Repeat K=21 or A=C and B=D
getKey->K
If Ans
Output(A,B," 
If K=11
Then
A->E:B->F
Output(E-1,F,"B
End
sum(ΔList(K={25,34
A+Ans(" "=sub(Str2,16(A-1+Ans)+B,1->A
sum(ΔList(K={24,26
B+Ans(" "=sub(Str2,16A-16+B+Ans,1->B
randInt(-1,1)
C+Ans(" "=sub(Str2,16(C-1+Ans)+D,1->C
randInt(-1,1)
D+Ans(" "=sub(Str2,16C-16+D+Ans,1->D
Output(C,D," 
Output(C,D,"*
Output(A,B,"O
If C≥E-2 and C≤E+2 or D≥F-2 and D≤F+2        
Disp "YOU WIN"
End

I was trying to make it so that when you press the Y= button, it drops a bomb, or the letter B, on the screen. Then if the AI piece gets within 2 spaces of the bomb through either the x or y coordinates, then you win. Right now it just ends the game when it's close to the first value entered into the bomb coordinates.

Also, I was wondering how to delete the AI piece (*) after it moves? So there isn't a trail of *'s on the map.

Last edited on 12 May 2011 02:38 by emmit_212 Show more

Re: AI in maps

burr 16 May 2011 21:35

The reason that you are seeing the trail of *s is because you erase and display the AI after its position has already been updated. The order of operations you want is (1) erase old position, (2) update position, and (3) display new position. Does that make sense?

Re: AI in maps

emmit_212 17 May 2011 16:33

Yeah thanks for the help. I was working on it in school the other day and got the trail of *'s problem fixed, but now I'm stuck on how to do the bombs.

jaysoncopes (guest) 11 Dec 2014 19:58

In addition to burr's comment about fixing the trail of *s, I also noticed that the game has no way of making sure there is actually a bomb there and not just a footprint of an old game. So I did a little testing and if you set E->25 and F->25 or really anything outside that range, it'll be fine.

Also, as for the player piece moving slowly, there's not really a great way to fix that. Each command run takes a certain number of "ticks" or milliseconds to run, but it's seemed to be that the getKey and other output functions take longer to run than others. So in reality, when you actually do get an input, there's more time that it needs to take to process it, so there's really no fixing that. Sorry!

Let me know if you have any more questions or would like to see my code :)