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~Ray Casting for a Bullet~
1. I was told by NanoBrain that to make bullet sequence, you need to do some raycasting. Now I have my shooting animation that is played well. I also have the gun sound. Can someone please explain how I can add the raycasting to do the bullet sequence? What is the coding for the raycasting?

2. How do I have the ray that is casted so when it hits a X file object from DarkMatter, it jumps to a part in the game that makes the X file play an animation file to make it die? (I know how to do every thing after the comma)

~Keyboard Input~
1. I have the character move when you press the upkey, downkey, right key, and left key. How do I change those keys to the letters W, S, D,
and A? (In the order they where typed)

~Other~
1. Can someone make a gunshot blast effect? How do I position it in front of the gun?

Thanks everyone, Please reply!

GreenFox,

It is not that you need to do raycasting to create a bullet sequence. But, that raycasting needs to be coded within the bullet sequence.

Raycasting is quite simple, so don't overthink it. It is a method used to check at every point between two points. In 2d, on the x axis(left to right), let us say that point a = 0 and point b = 10. Let us also say that point a represents a bullet before it was shot, and point b represents how far it will travel in one program loop(specifically where it will end up after one program loop). How can we check every point between point a and point b for an reason, mainly collision?

First of all, we need to define how large a point will be. This can be any real or integer number. For this lesson, we will define a point to be 1 screen pixel in size. Therefore, there are 10 points all together. So, we need to check 10 points.

Remember, that the bullet is traveling at 10 pixels per game loop, and so we will need to check between 10 points each game loop for any collision. So, let us start at point 0. Make sure that you cast a ray before the bullet's location is updated. Use a for next loop(a for next loop will be completed before any game loop continues), which increments by one pixel each loop, starting at the bullet's last location. In this scenario, the bullet's last location is at point a, or 0, and it's new location will be at point b, or 10. So, we need to count from 0 to 10 in the for next loop.



After the for next loop, the bullet's location will be set to 10. Then, on the next loop, the for next loop will need to check from the new point a, which is the old point b, to the new point b, which is ten more pixels away, and so on.

This may be a bit confusing, due to me being rushed for time at the moment. Remember, this lesson is basing the ray on only 1 dimension, left to right. It is a bit different to do this on more than one dimension. I will explain later.

You could also use Sparky's DLL for collision

~Keyboard Input~

Thanks Everyone!

Nano brain, I get the For Next loop... But I have no clue how to do object collision with a ray and a X file loaded object.

GreenFox,

Each point within the for next loop needs to be used within object collision detection. Check to see if that point is within an object. Unfortunately, collision detection is not my strong point.

That's ok NanoBrain, I'll try my best on it. Thanks alot!