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JohnJensen β Shooter Engine AS3
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Published: 2009-01-13 22:11:21 +0000 UTC; Views: 8479; Favourites: 25; Downloads: 373
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Description
WAIT FOR IT TO LOAD >:CPlatformer + Shooter c:
Controls
Arrow keys - move
Up - Jump
Mouse - Aim
Click - Shoot
To jump up a wall, stand next to it, and hold down right/left arrow key, while pressing Up (jump button)!
To reload, put the mouse over the player.
The level is generated from a multidimensional array. So the level is tile based, but the game isn't.
Enjoy the engine.
REMEMBER, THIS IS AN ENGINE, NOT A GAME.
Bugs
- You can get stuck in some walls
- You can jump through the roof at the right-top corner
I'll fix those if I make this into a real game.
I also discovered Flash CS4 had a Sound libary, so I added some sounds from there to the game.
Thanks to ~AceDecade for giving me tips, and tutoring me a little about AS3, and encouraging me to learn it.
Related content
Comments: 89
This is Awesome!..
I wish I am as good as you in creating games in AS3..lol..I'm just starting to create my first platformer and now i'm stuck with figuring out how to shoot projectiles.. >_<" haha..
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Is it possible you can release the fla. file? I am interested in the wall-jumping mechanics
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I'm not really comfortable with sharing my .fla file, but I can tell how I programmed the mechanics.
Basically whenever you're touching a wall, I'm checking if the user is holding down the jump button at the same time, and then I make him jump (usually setting the gravity/y velocity variable to a negative numbers in my game programming method) and then I set the x velocity variable to a number that corresponds to the side the player is touching the wall: If the player touches a left wall, set x vel to 5, and if a right wall then x vel to -5, and y vel to -10. You can change those numbers until it feels right, those were just some I randomly came up with.
Hope it sorta gives you an idea of how it works.
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Thank you, that has been really helpful. Just wondering, did you set separate hitboxes for each side of the the walls to check whether the player hits the left or right side of the walls? Or did you check for the current direction the player is heading when it touches the wall (check whether x vel is += or -= etc).
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I always use the same movie clip for ground, so I always have different sides of the player checking for collisions on the ground. If I have a 20x20 ball as a player, I'd say (assuming the anchor point is in the middle) if(level.hitTestPoint(player.x-10, player.y, true)) to check the left wall and then player.x+10 for right wall, player.y+10 for ground and player.y-10 for ceiling.
Also another technique I usually use, is having a while() function for each of the sides, for example if the player is 4 pixels inside the wall, and is only pushed 1 pixel away for each frame it'd look weird like in this Flash, so I have a code like this for each side:
while(level.hitTestPoint(player.x-10, player.y, true))
{
player.x++;
}
so it basically keeps pushing him to the opposite side until he's not touching the wall any longer. I usually put the code after the first collision checks.
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I see you got the level wall to check for collisions. Didn't cross my mind that you could assign the hitTest responsibility to the level walls. Thanks for sharing
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any usefull tutorials for making this kind of things?? dont like wall jumping tho
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Look in my gallery for a platformer tutorial.
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I'm working with a tile engine at the moment to, trying to upgrade it to AS3.0 from AS1. It's more of a platformer/parkour engine but if you'd like to swap codes or something, let me know.
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heh, to be honest with you only the level generated was tilebased, the collision was done with hitTestPoint() onto the wall movieclip. 
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Ah, I use a prefeined array, with each different number spawning a different map piece. Still working the kinks out of it though
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yup, that's what you do ;)
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IDK if someone's said it, but I assume ammo is AMMO IN CLIP/OTHER AMMO. So you have to make if
if(OTHER AMMO <= 0) {
}
Else if (OTHER AMMO <= 0){
reload;
}
Wasn't mean to be an actual code, just a concepty-thing.
Also, yes, as has been said before, WASD controls.
And, finally, you should definitely do a tutorial, or upload the .fla, or something, preferably the tutorial one. So few of those exist for AS3 >.<
But nice work.
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The ammo bug is fixed in the actual .fla
WASD controls has also been added in actual .fla
Haha, the .fla is probably really confusing, cause I animated everything with codes aswell, so I'm not sure how much help it would be.
It's probably just a better idea to learn how to port from AS2 to AS3.
Like if you see
onEnterFrame = function() {
Β Β Β _root.player._x += 5;
};
it would be
function enterFrame(e:Event):void {
Β Β Β player.x += 5;
}
stage.addEventListener(Event.ENTER_FRAME, enterFrame);
in AS3.
Writing AS3 is a tad bit longer than 2, but it's WAY more flexible, and it's 10x faster!
But one thing you can't do in AS3 is write the code on the movie clip, which you might think is bad in the start, but you'll get used to write the entire code on the frame.
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Yes, but you see, my problem lies in a lack of knowledge of AS2. I get things like hittest, variables, basic movement and such but utilizing the mouse, setting angles and gravity I never could figure out.
UGH. It's very frustrating because I'm working on an identical game. We finally figured we'd try something somewhat different, though, but for the longest time a basic game engine had been holding us back.
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Is there a actually game of this? Cause I was hoping for something to kill.
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hey if this is a engine how do i download it into my flash???
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IM trying to make a platformer where one of the characters attacks is to shoot this energy ball. there's no aiming involved it just goes in whatever direction he's facing. what would be the code for that? please help me 
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I started with 8/55 bullets. Next load was 7/56.
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It's fixed in the real version.
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All bugs in this engine are fixed in the real game.
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OMG!!! So... friggen... awesome... Dude you gotta teach me that kind-o AS3, cuz its simply AWESOME
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Well, you could've done it with AS2 but.. yeah. xD
Do you have MSN or something? I could maybe tutor you a bit?
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Sent your note back. take a look at it.
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Can you note me yours too. I didn't really notice it -.-
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are there supposed to be enemies or something cuz all iv got is me and a lot of floating blocks....
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There's gonna be enemies in the real game.
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I completely ran out of bullets...but its soo fun!(^-^)
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Thanks.
Just reload if you want to play again then!
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whoa that's awesome john! I'm trying AS3 also, but it's way harder than AS2. most i got was a little guy that could jump around 
btw.. is it possible to draw the level in AS3 like in your previous tutorials? or does the level have to be created using an array?
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of course you can draw your levels, I just get lazy at games when I have to draw the ground, so I made the level using an array.
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ok good. i was getting worried cuz i'm not very good at arrays yet
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A level array could be like this:
myLevel = [
[0, 0, 0, 0, 0],
[0, 1, 1, 1, 0],
[0, 1, 1, 1, 0],
[0, 0, 0, 0, 0]
];
for(var i = 0; i < myLevel.length; i++) {
for(var j = 0; j < myLevel[i].length; j++) {
if(myLevel[i][j] == 0) { /* Wall */ }
if(myLevel[i][j] == 1) { /* Free space */ }
}
}
Could also use a switch() {} instead of the ifs.
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don't forget var before myLevel. xD
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XD They're quite easy.
var myArray:Array = new Array("Peter", "Bob", "Larry");
trace(myArray[0]); // Peter
var _random:Number = Math.floor(Math.random()*myArray.length);
trace(myArray[_random]); // A random string from the array.
/* AS3 doesn't have AS2's random(), you have to use Math.floor()
Math.random()*number like in JavaScript. Quite sad.
for(var i = 0; i < myArray.length; i++) {
trace(myArray[i]);
}
// Peter Bob Larry
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...AND ADD SOME ENEMIES IF YOU DO. AND GIVE IT A HALF LIFE CONCEPT.
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No GoldenEye 64 concept
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WHY NOT HALF LIFE YOU CAN ADD MISSIONS
ALSO ADD ACHIEVEMENTS
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