Make sure you are in advanced mode (in the file menu) if you are not already.
Go through some basic Game Maker Lite tutorials, for sure, and then try to find a basic scripting tutorial. What you want is to make an object (for instance oRedBlob with sprite sRedBlobSprite) and place that in your level. Then open the object properties, add a Step event, and either dig through the blocks on the right-hand side or try some scripting. Scripting isn't that bad. ALTERNATIVELY, you can try looking for a tutorial that uses timelines, and maybe not as much scripting. I just looked at an old test game and apparently I made a bat fly up and down using a timeline, even though I didn't seem to remember doing that. XD
Super silly script example if you want to try it: Open your blob object properties, add a Create event, go to the control tab on the right, drag the "Execute Code" block into the "Actions" column of your Step event, open the code block, and type the following:
Then add another event called Step, do the same thing to get a code block, and type the following in that code block:
Code:
if(x > 400)
{
hspeed = -4;
}
if(x < 0)
{
hspeed = 4;
}
If you save it and run things, your blob should now run left and right. hspeed is a variable for an object that controls what its current horizontal speed is, and you can see a list of built-in/default variables here:
http://gamemaker.wikia.com/wiki/List_of_variables
If the logic is not clear, here's how it works:
- When the object is created, set the horizontal speed to 4.
- Each step (frame) of animation, check whether the X (horizontal) position of the object is greater than 400. If it is, the object is too far right, so we change the speed to -4 to start moving left.
- If the X position is less than 0, the object is too far left, so we change the speed to start moving right again.
It's a silly example and not how you would do your circle, but hopefully it gives you an idea of what scripting would be. To do a circle, one way to do it would be to add code in the step function of the blob that says, if button (whatever) is down, move counterclockwise around a path.
You would actually have to use math to determine what the X and Y positions would be for that path, though.
If you need math functions besides basic stuff, you can look here for a list:
http://wiki.yoyogames.com/index.php?title=Category:Game_Maker_Functions Trigonometric funcitons should be in there like sin and cos, and if those work in Game Maker Lite, you could be set. You will probably want to create a new variable in your blob's Create event though, called maybe curPathAngle, and set that to 0.0 (code would read "curPathAngle = 0.0;"). Then you could increase the angle while moving counterclockwise, and use sin and cos to get the X and Y coordinates.
If this is all super confusing, then your next step would be to read up on some basic X, Y, sin and cos trig information. Let us know if you have questions!
