Computer Science Canada how to move an image |
| Author: | Notthebbq [ Mon Apr 04, 2011 1:14 pm ] |
| Post subject: | how to move an image |
my group member wants to know how to move an image around the screen with out use of arrow keys (ie: an NPC/AI) and if you could explain it simply would be nice |
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| Author: | apython1992 [ Mon Apr 04, 2011 1:23 pm ] | ||
| Post subject: | RE:how to move an image | ||
Well, if you are using the arrow keys to move an image, you would be watching the event queue for a KEYDOWN event, which is a conditional, correct? Pseudocode
and so on. With an AI, moving the image is the same, in that you change its position. It's just the condition that's different (not a button pressed, but perhaps its position relative to the tower and which direction the path follows). |
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| Author: | Notthebbq [ Mon Apr 04, 2011 1:27 pm ] |
| Post subject: | Re: how to move an image |
Thanks for the advice, I was just wondering if you could elaborate on the whole AI moving part, like an example code would be really helpful. I kind of knew of the moving with keyboard solution. Thanks again. |
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| Author: | Insectoid [ Mon Apr 04, 2011 1:32 pm ] | ||||
| Post subject: | RE:how to move an image | ||||
Say we have a loop. Inside that loop we have image_x += 1. If we execute that loop, the image will move in the +x direction. Similarly, we can do something like
alternatively;
Whether or not you want to go left is an entirely different question. |
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| Author: | Tony [ Mon Apr 04, 2011 2:41 pm ] |
| Post subject: | RE:how to move an image |
Most NPCs are scripted -- they don't make decisions, just follow the actions described in some text-file. Basic AIs come down to a very simple model: what is the current world state? What move should I make this turn for this state? Repeat. |
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