Computer Science Canada

AI----WELL NOT REALLY AI
Author:  Paper*Mate [ Wed May 25, 2005 11:07 am ]
Post subject:  AI----WELL NOT REALLY AI
Well i'm alsmost done my paintball game..just gotta get my guy shooting. I'm getting really frustrated because i can't get by blue guy moving and shooting randomly at me (red guy).I'm trying to make him as a computer player...i don want just a 2 player game!!!!!!

setscreen ("offscreenonly")
var x, y : int
x := 100
y := 100

var chars : array char of boolean

loop

drawfillbox (50, 110, 40, 280, black)
drawfillbox (590, 110, 600, 280, black)
drawfillbox (490, 0, 500, 25, black)
drawfillbox (490, 375, 500, maxy, black)
drawfillbox (125, 375, 135, maxy, black)
drawfillbox (125, 0, 135, 25, black)
drawfilloval (320, 190, 50, 50, black)
drawfilloval(520,98,6,6,blue) %%%MY BLUE GUY--WANT HIM TO SHOOT AND MOVE RANDOMLY AT THE RED GUY

Input.KeyDown (chars)

if chars (KEY_UP_ARROW) then
if whatdotcolor (x, y + 9) = 0
then
y := y + 5
end if
end if
if chars (KEY_RIGHT_ARROW) then
if whatdotcolor (x + 9 , y) = 0 then
x := x + 5
end if
end if
if chars (KEY_LEFT_ARROW) then
if whatdotcolor (x - 9, y) = 0 then
x := x - 5
end if
end if
if chars (KEY_DOWN_ARROW) then
if whatdotcolor (x, y - 9) = 0 then
y := y - 5
end if
end if

drawfilloval (x, y, 6, 6, 12) %%MY RED GUY

View.Update
delay (7)
cls

end loop
Author:  Delos [ Wed May 25, 2005 11:20 am ]
Post subject: 
Please use [ code] or [ syntax] tags when posting code.

Turing:

 drawfilloval(520,98,6,6,blue)


Instead of '520' and '98', use variables as you have with your red piece. Now, you can dynamically change the position of the piece.
You'll have to deal with how it's going to move - it would not be useful to have it moving randomly with every execution of the loop. My suggestion would be thus:
- you know that the piece will only move in the x-direction (left/right). So, you assign a random value to a variable, between the numbers 0 and {maximum x-value possible}.
- for each execution of the loop, add or subtract a constant from the piece's x-value, and subtract the same from your 'counter' variable.
- stop when either the counter variable reaches 0 or your piece does
What would this look like?

code:

variable x_p                variable counter
50 (starting value)          random number -> 10
---choose to *add* 1 each loop
51                              9
52                              8
...                              ...
60                              0 (has reached 0, time to choose another number)
60                              random number -> 14
---choose to *subtract* 1 each loop
...


Get the idea? You can vary the value being added or subtracted to make it seem like the piece is moving quickly or slowly. Repost your code when you're done.

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