Not sure you can get collision polygon coordinates in C2, at least not without external plugins or complex formulas with hundreds of overlapping checks.
You can make a "clone" of the collision polygon with image points and move from one point to another. I did something similar in this post:
This post may also be relevant:
Looks like the bullet behavior is still enabled.
Try to disable it in the same event where you respawning the player.
So you have published games on the Arcade and yet you have absolutely no idea how they work? Lol
Set acceleration and deceleration to 10000 for sharper controls.
Also you should probably remove Platform behavior, since you are using 8-Direction.
Ok, then compare Y of your character sprite with Y of your block sprite.
If character.Y is greater than block.Y, then it's below block center and you can give coins.
You can do it in "Character->On collision with Block" event.
I don't know what "question block" is, I assume it's a sprite.
If its origin point is in the middle, you can do this:
On touched object Block
Block compare Y < Touch.Y : (give coins)
Add all objects to a container. When you create one object, other objects from this container will be created automatically.
Do you mean this animation?
It's easy to do with Bullet behavior.
Set angle of motion=-90
speed=1000
gravity=2000
And, probably disable collisions.
You can temporary set parallax to 100,100 for static scenery layers before using ScrollTo-Shake.
But it may be tricky to set their position correctly.
Ok, try this:
https://www.dropbox.com/s/ak58r1s91gkd9 ... .capx?dl=0
Is this what you are trying to make? You can add more yellow sprites during the game, extending the area. Just position then exactly next to the existing yellow sprite, without gaps.
What you are probably looking for is TileMap. There was a similar post recently:
You can do the same with sprites if you position them precisely next to each other.
There are a few examples of procedural world generation in the FAQ and a couple of tutorials:
how-do-i-frequently-asked-questions_t63692
https://www.scirra.com/tutorials/all
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Did you move English letters to the second frame of Letters sprite?
If letters are changing to English on start of the layout, you probably forgot to set animation speed to 0. You need to do this for each animation.
Seriously, why do you need physics? Your particles are simply flying, falling and bouncing off the floor/walls. Bullet can do all this. And, I'm guessing, Bullet must be much better for performance.
System -> Compare two values -> angle>6
"angle" can be sprite.angle or angle(x1, x2, y1, y2) or some other expression.