detecting if car is offroad

[aquadraht]

Hello all,

 

not long time ago, i experimented a little bit with canvas and tried to make a small car race in it. because i didnt know phaser, i started everything from scratch without any framework.

but now that i know phaser, i love it and want to use it in my small game. but there is one thing i couldnt figure out how to do. maybe someone can give me a hint on how to start.

 

how it was without phaser:

i had a large jpg as background in canvas. the street was in black color, and offroad white ( background: https://github.com/daTobiGit/carRace/blob/master/images/map.jpg )

when i wanted to detect if the car is offroad, i took the pixel color (getImageData) from the background at the current position, and if it was different than black, the car was offroad.

 

now with phaser, i dont find a way how to do that. i can still load the background in a canvas, and use getImageData again, but maybe there is a much better and faster way how to do that.

maybe there is something with a tilemap, but the street cant be tiled properly, as it is painted ugly in m$ paint. maybe i can set a "street layer" somehow, and check collision or overlap with it?

any help is appreciated!

 

thanks in advance

tobi

[rich]

Use a bitmapData, draw your "hidden road" image to it and getPixel on it.

[aquadraht]

this easy? now i feel stupid! ;-)

 

thanks for the fast help

[jdnichollsc]

Hi my friend,

 

How did it go with that?

 

Regards, Nicholls