• Register

You are the invader attacking the alien horde in this genre-flipping roguelike shooter. Game-play is smooth and resembles old-school isometric games, with some modern touches and HD graphics.

Post news RSS Rogue Invader: building levels and ramps

Good games have vertical changes for the players to navigate. Tons of games have ladders. We wanted ramps. Ramps are hard.

Posted by on

We want the aliens to appear a civilized race. Lots of old games missed out on this opportunity; we didn’t want to miss it. The zeno race is really industrious. They build fortresses, factories, and cities. If we didn’t show those off, we’d miss a huge opportunity to show the player how deep the game really goes.

In preparation for a playable version that will launch tomorrow, we wanted to show what a zeno fortress looks like. And in building it, we had to build it smartly. As players, we often looked at landscapes and assumed they were all one piece, because that’s how they are visually presented.

After building the fortress, I’ve changed my assumptions. There are probably thousands of pieces where I see one. (And that estimate might be off by a full order of magnitude.)

Building ramps into the fortress provides a great explanation for this.

Ramps--so easily overlooked.

A build ramp probably looks something like this:

4 Jun update images

In order to get a soldier to go up ther ramp we had to consider a few things:

  • Should the player have to press UP to go up the ramp or should the soldier’s movement be guided up the ramp?
  • How do we get the soldier to stay on this object, but appear to go behind the front areas? Having the player run in in front of the near edge would look wrong.

So how did we avoid this? (This is really bad).

4 Jun update images

In GameMaker, an object can have only one depth, that is, different sections of it cannot be behind and in front of the soldier at the same time. So we build the ramp in two pieces:

4 Jun update images


4 Jun update images

and gave each object a different depth so we could show the soldier going behind the front segment and on top of the back segment.

We had a few other problems involving depth and movement of the soldier, so we added several more objects to control those things as well as collisions.

4 Jun update images

We’re excited to have a playable segment in your hands tomorrow.

Tell us what you think and whether the ramps work the way you expect.


or email us marketing @ squishygames [dot] com.

--Nathan and Lee J

Post a comment
Sign in or join with:

Only registered members can share their thoughts. So come on! Join the community today (totally free - or sign in with your social account on the right) and join in the conversation.

Follow Profile
Rogue Invader
Windows, Mac
Send Message
Release date
Game watch
Post news
Related Games
Rogue Invader
Rogue Invader Arcade
Related Engines
GameMaker Studio
GameMaker Studio Commercial