Computer Science Canada Help Me!!! |
| Author: | hayawi [ Sat Aug 13, 2011 2:48 am ] |
| Post subject: | Help Me!!! |
OK, so im trying to make a game just for fun, and i need help with some of the code. var gy1 : int := 200 var gx2 : int := 220 var gy2 : int := 220 var rx1 : int := 400 var ry1 : int := 400 var rx2 : int := 420 var ry2 : int := 440 var endscreen : int := 630 - gx2 %for making the attacks in the middle var mult : int := 225 %for sensing the keys that are pressed var chars : array char of boolean Input.KeyDown (chars) var shieldx1 : int := gx2 + 5 var shieldy1 : int := gy1 var shieldx2 : int := shieldx1 + 3 var shieldy2 : int := gy2 var gatkx : int := gx2 var gatky : int := gy2 + gy2 - mult %my procedures %go right procedure right gx1 := gx1 + 1 gx2 := gx2 + 1 delay (10) end right %go left procedure left gx1 := gx1 - 1 gx2 := gx2 - 1 delay (10) end left %go up procedure up gy1 := gy1 + 1 gy2 := gy2 + 1 delay (10) end up %go down procedure down gy1 := gy1 - 1 gy2 := gy2 - 1 delay (10) end down %unused code %procedure rockshield % Draw.FillBox (shieldx1, shieldy1, shieldx2, shieldy2, brown) % delay (10) %end rockshield %the atk procedure rockblast for i : 1 .. endscreen cls Draw.FillBox (gx1, gy1, gx2, gy2, green) Draw.FillOval (gatkx + i, gatky, 2, 2, brown) delay (10) Input.KeyDown (chars) locate (1, 1) if chars (KEY_RIGHT_ARROW) then right elsif chars (KEY_LEFT_ARROW) then left elsif chars (KEY_UP_ARROW) then up elsif chars (KEY_DOWN_ARROW) then down end if end for end rockblast %the movement loop shieldx1 := gx2 + 5 shieldy1 := gy1 shieldx2 := shieldx1 + 3 shieldy2 := gy2 gatkx := gx2 gatky := gy2 + gy2 - mult cls Draw.FillBox (gx1, gy1, gx2, gy2, green) Input.KeyDown (chars) if chars (KEY_RIGHT_ARROW) then right elsif chars (KEY_LEFT_ARROW) then left elsif chars (' ') then rockblast elsif chars (KEY_UP_ARROW) then up elsif chars (KEY_DOWN_ARROW) then down end if delay (10) end loop So im trying to make the character move diagonally, because at the moment he only moves up, down, left, or right. Also, im trying to make the character shoot multiple times, instead of just once, and having to wait until the shot is expired. Post any relevant code (You may choose to attach the file instead of posting the code if it is too long) also, im using turing 4.1.1, please help asap |
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| Author: | Zren [ Sat Aug 13, 2011 12:04 pm ] |
| Post subject: | RE:Help Me!!! |
For #1: Try drawing a diagonal line on a sketch of a graph. Observe how the point's x and y values differ. For #2: Arrays. Particles. Search for those keywords. |
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| Author: | hayawi [ Sat Aug 13, 2011 8:30 pm ] |
| Post subject: | Re: Help Me!!! |
Damn it, ive never been good with arrays, and i dont get what you mean by the diagonal line, im just saying that i want it to go up and right when you press up and right, also, how do i stop clipping of the images? |
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| Author: | Zren [ Sat Aug 13, 2011 9:20 pm ] |
| Post subject: | RE:Help Me!!! |
You can be pressing all 4+ buttons at once. You require to be pressing at least 2 (up/down and right/left) to move diagonally. Your code only lets you press one at a time. Remember that in if/elsif/else blocks, only one (the first one that is satisfied) part of the code executes. |
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| Author: | hayawi [ Sun Aug 14, 2011 1:49 am ] |
| Post subject: | Re: Help Me!!! |
so if im not supposed to use ifs, what do i use? or are you saying the ifs have to be written differently |
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| Author: | DemonWasp [ Sun Aug 14, 2011 11:38 am ] |
| Post subject: | RE:Help Me!!! |
You're supposed to use ifs. You just need to write them such that you can, for example, be pressing both up and right at the same time. It's up to you whether you want to allow people to press up and down at the same time, or left and right at the same time. However, you must allow (one of up or down) and (one of left or right) at the same time. |
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| Author: | Raknarg [ Sun Aug 14, 2011 7:52 pm ] | ||||
| Post subject: | RE:Help Me!!! | ||||
Think about it this way: when you use an if, the if will end as soon as an if it goes over is true. ex:
Both statements may hold, but only "stuff" will happen because it skips the rest of the if since the first if was true.
Now because they have their own ifs, "stuff" and "other stuff" both happen. |
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| Author: | hayawi [ Sun Aug 14, 2011 8:36 pm ] |
| Post subject: | Re: Help Me!!! |
wow thanks, that really helps, i was on the verge of figuring it out when i made another player and used a different if, but this really explains the concept, thanks |
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