Well, the problem is that each one of them have way to many interpretations. As it, the answers you can get can also be totally useless to you.
Practically speaking, it you can't describe better what you want, it's logical that you have difficulty to find a way to do it. The first and most important thing when you want to code something is to firstly know exactly what you want to achieve. Then you also have a good idea of what features/commands you'll need and so where you have to search.
Anyway, here's a try. But without full example, I'll not pass a full day explaining every single possibilities without even knowing if one of them correspond to what you where looking for.
a) How can I start an animation in Renpy with mouse click? An example code please?
"I have a VN style story and at one time, the scene is a dynamic one, but I want that it's the player that will start it.". The answer is either in a
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with a simple "start" the animation choice, in the basic dialog feature, with a "click when ready". Or in a
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with ; its action being a simple
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screen action.
"I have a VN style story where the scenes are static by default, but sometimes, the player can click on the background to make them dynamic while the dialog continue to play." Here again the answer in on a screen. Instead of
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ing a displayable or a
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, you show a screen that while either have a transparent
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that take all the screen, or a regular
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, that can be a simple
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. Add an
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in them and use the button to switch between each branch of the structure ; one being the static image, the other the dynamic one.
"I have some items in the background that can be animated if the player turn them on, among them there's a TV". Here, the answer is
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or
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.
@f95zoneuser463 talking about Point'n'Click add this possibility, "I have parts of the screen that will act as button, and I want them to be animated when the mouse is over them". The answer is
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or the hovered property of
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.
In addition to that, you'll need the
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(ATL) or the
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of Ren'py to make the dynamic part.
b) How can I move a character with mouse around the screen ?
Do you want to move it as in "I'll drag it from this position, then drop it in that one" ? Then look at the (almost undocumented)
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screen statement, or directly at the
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.
Or do you want it to move according to the move of the mouse ? Then, it's not totally impossible, but just forget about it.
Or do you want it to move over a map, going here or there when you click here or there ? Then you need a transparent
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that take all the clickable part of the screen, and that will have a custom action retrieving the mouse position and using it to accordingly change the position of the character. Easier to do than to say.
c) Can I set easily a "color path" like that in Adventure Game Studio ?
What do you mean by "color path" ?