#The platform games code#

These flags will disable collision detection when the player is moving in a specific direction. In our definition of Platform which defines the properties of each individual platform in the game, we add some new behavioral flags:

#The platform games code#

So, let’s not waste any time and crack on with that inevitable boilerplate code so we can look at the real meat of the problem: the collision detection.

Games such as the all-time classic Rainbow Islands and more modern affairs such as the amusing time-waster Monsters (Probably) Stole my Princess! use pass-through platforms exclusively.įor those of you who followed the ladders tutorial, implementing pass-through platforms is going to be a familiar story: define a new surface type and its physics properties, add some flags to the platform definition class to specify which platforms should have the new behaviour enabled, create a platform of the new surface type, and change the collision detection code to deal with the new possible behaviour.

The platform behaves like a normal platform in all respects, except that when the player jumps up from underneath and hits it, he/she continues travelling upwards instead of encountering a solid obstacle. Pass-through platforms are a type of platform commonly found in video games whereby the player can jump up through the platform from underneath, landing on its solid top surface. Rainbow Islands uses only pass-through platforms for the entire game