[Flash8] Platformer Gravity Problems.

[RiezaHughes]

Hi Kirupa, first time poster here... and i hope i can help out other folk on the forums as well as just asking for a little help here and there ^^

I have been asked to create a Flash game for my student project this year. i chose to create a 2D platformer. Now, the first thing i did was look at your tutorial on gravity, however when i looked at it i realised it was slightly different from what i wanted so i tweaked it a little using information from http://www.bit-101.com/tutorials/gravity.html.

I got it to jump exactly the way i wanted it to, however then i wanted it to land on platforms... and theres where i hit the snag.

First i created a single platform at the bottom of the stage so that the ball would land on it after jumping instead of falling right past the boundaries of the stage. This worked, however the ball always landed at different depths into the ground... which i thought was stange. Nevertheless i ignored it for the moment and thought about making more than one platform to get the ball landing on more than one thing. however, no matter what i tried, i could only get it to land on one. I have no idea what i'm doing wrong. all the hit states are correct.. all the instance names and code are exactly the same on the stage however, so even though its the same as the first time it landed, i think it's conflicting and causing screwups..

In the file attatched, you'll find that the ball only lands on the right hand panel. I've tried everything i could think of and can't get the ball to land on the other panels. The code is exactly the same...

if anyone can help me i would really appreciate it. Thanks.

Left and right to move. Space to jump

[Ph03nix]

I looked at your code and general game structure, and I hate to sound rude but it's quite amateurishly made. Although flash supports "hitTests", they are inaccurate unless your object's and the platform's edge positions are always rounded to the nearest decimal. The ideal way to program a platformer game is not to use hitTests, but rather to create an two-dimensional array of integers, with values representing things like square blocks. If you're interested in my approach I wouldn't mind making a simple example of the basic platforming game, but I should warn you it would use object-oriented design, which you might not be familiar with.

[RiezaHughes]

Originally Posted by Ph03nix

I looked at your code and general game structure, and I hate to sound rude but it's quite amateurishly made. Although flash supports "hitTests", they are inaccurate unless your object's and the platform's edge positions are always rounded to the nearest decimal. The ideal way to program a platformer game is not to use hitTests, but rather to create an two-dimensional array of integers, with values representing things like square blocks. If you're interested in my approach I wouldn't mind making a simple example of the basic platforming game, but I should warn you it would use object-oriented design, which you might not be familiar with.

it's not rude, don't worry. i'm still learning. ^^

and i would be... Anything to help me get along It might turn out to be a better way to make the game. i'm all about learning.

[Ph03nix]

Originally Posted by RiezaHughes

it's not rude, don't worry. i'm still learning. ^^

and i would be... Anything to help me get along It might turn out to be a better way to make the game. i'm all about learning.

That's a very good approach! I'll whip up a simple platformer ASAP, and I'll keep the number of classes low (one for characters, and maps (levels) should be all I need)

I'll also try to document my code to make it easy to understand.

[RiezaHughes]

Originally Posted by Ph03nix

That's a very good approach! I'll whip up a simple platformer ASAP, and I'll keep the number of classes low (one for characters, and maps (levels) should be all I need)

I'll also try to document my code to make it easy to understand.

okay. i appreciate this. Thank you very much.

if it's easier, feel free to add me via my email to msn.

[Ph03nix]

Ok, here's the platformer sample

The concept is that it contains a two dimensional array called map. The game draws the map by creating 16x16 tiles that represent values of the array. Character check their positions based on the array to see if they are touching the walls or not.

I tried to document it as much as possible.

Enjoy!

[RiezaHughes]

thank you very much. i'm seen this being done before, and i couldn't make sense of it. but this definately breaks it down a lot more. I appreciate you taking the time to do this. ^^