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I think you're making a mistake thinking of a framework as a crutch. Surely when you want to build your own computer, you don't make all your own circuit boards? Mine and smelt the copper yourself? …

The bullet's position changes based on it's trajectory. The trajectory you have is likely in a 2D vector? The simple update is: UpdateBullet(Bullet bullet, float deltaTime) { bullet.x = bullet.x …

Unity seems to be a popular choice lately. It will allow you to run on iOS, Android, Web, PC, Mac. Although, you're question needs to have more specifics like what kind of games you want to make, wha …

This means that when the background is drawn, not all of it is redrawn every frame. When something on the map moves, the area it used to occupy gets marked as dirty. Then when drawing, you know you on …

So, implementing gravity has some prerequisites. A big one is a time keeping system. One good read for time systems is Fix Your Timestep! by gafferongames.com. The time system ties in tightly to the u …

Don't just send an integer score to the server. Send a collection of game stats that can be used to verify the score was realistic. Or you can implement some pre-shared key for calculating the score. …

You really need to learn to use a debugger. Being able to set a break point and pause execution of the code when it triggers is invaluable. You can see the state of the variables when execution is sto …

Model the playing field as a hexagon grid. Each bubble is actually a hexagon shape for its connections: Each flat side is where a bubble can connect. When a bubble touches another bubble, snap the …

As you mention in your question "...using the new HTML5 technology." … HTML5 fulfills those desires. I would use HTML5 or simply "web games" "browser games". …

The user will have to download the sprite at some point in order to see it on their device. Whether it's at the initial download or later is a design consideration. I recommend you use a combination …

I would check if the player moved, and call an event to handle all the checks for new tiles. Something like: ... if(playerX != oldPlayerX || playerY != oldPlayerY) { onTileChange(player); } ... …

It's unclear what your rationale is for doing this. You might want to ask a new question about the problems you're running into that would inspire you to look for such a utility. There is a library c …

No, platformers do not have to be tile based. You can do "free placement" of sprites as well. See these related questions to learn more: Recommended method towards making custom maps for a 2d game? …

Smaller numbers of either is better right? So how do we make sure that larger numbers make the score smaller? We divide 1 by that number. The larger the number, the smaller the parts 1 is broken into. …