Re: [pygame] A bunch of newbie questions
Hi there, Thanks a bunch - it works (and sorry for my poor explanatory powers :) cheers! Naranjito On Nov 28, 2007, at 8:55 PM, Michael George wrote: I'm not sure exactly what you want, but for x in object: deadStar.grav(x) will call deadStar.grav on each sprite in the sprite group object. --Mike Miguel Sicart wrote: hi all, thanks a bunch for the answers - I have learnt much, and everything seems to work. I have an extra question, though. Albeit much more simple: I have an object with a gravitational method that should affect all objects of one type in the game. How do I pass that method to a sprite group? (like deadStar.grav(object), being object a group of sprites - Python does not like it since the objects lack self.x, self.y before they are instantiated). Cheers, and thanks for the help, Naranjito On 11/27/07, *Dmitrii 'Mamut' Dimandt* [EMAIL PROTECTED] mailto:[EMAIL PROTECTED] wrote: if game_mode == player_alive: handle_input() move_player() if player.is_killed(): if number_of_lives == 0: I'd change it to, possibly, if player.number_of_lives , but that depends on the actual game design
Re: [pygame] A bunch of newbie questions
hi all, thanks a bunch for the answers - I have learnt much, and everything seems to work. I have an extra question, though. Albeit much more simple: I have an object with a gravitational method that should affect all objects of one type in the game. How do I pass that method to a sprite group? (like deadStar.grav(object), being object a group of sprites - Python does not like it since the objects lack self.x, self.y before they are instantiated). Cheers, and thanks for the help, Naranjito On 11/27/07, Dmitrii 'Mamut' Dimandt [EMAIL PROTECTED] wrote: if game_mode == player_alive: handle_input() move_player() if player.is_killed(): if number_of_lives == 0: I'd change it to, possibly, if player.number_of_lives, but that depends on the actual game design
Re: [pygame] A bunch of newbie questions
I'm not sure exactly what you want, but for x in object: deadStar.grav(x) will call deadStar.grav on each sprite in the sprite group object. --Mike Miguel Sicart wrote: hi all, thanks a bunch for the answers - I have learnt much, and everything seems to work. I have an extra question, though. Albeit much more simple: I have an object with a gravitational method that should affect all objects of one type in the game. How do I pass that method to a sprite group? (like deadStar.grav(object), being object a group of sprites - Python does not like it since the objects lack self.x, self.y before they are instantiated). Cheers, and thanks for the help, Naranjito On 11/27/07, *Dmitrii 'Mamut' Dimandt* [EMAIL PROTECTED] mailto:[EMAIL PROTECTED] wrote: if game_mode == player_alive: handle_input() move_player() if player.is_killed(): if number_of_lives == 0: I'd change it to, possibly, if player.number_of_lives , but that depends on the actual game design
Re: [pygame] A bunch of newbie questions
if game_mode == player_alive: handle_input() move_player() if player.is_killed(): if number_of_lives == 0: I'd change it to, possibly, if player.number_of_lives, but that depends on the actual game design
[pygame] A bunch of newbie questions
Hi all, First of all - this email has a collection of basic, newbie questions. I hope this doesn't break etiquette or it's too annoying - if these are too many questions, or too basic (and there is somewhere else I could find answers), please let me know :) On to the questions. I am not a programmer, and only recently I took up Python/Pygame. While Object Orientation does not seem conceptually quite hard, I think the implementation puzzles. So here's the question: I have a class that defines the main object with a keyboard method (among others) that controls player input class Hero(pygame.sprite.Sprite) def keyboard(self) I have another object called companion, which just moves around the Hero What I want is that, when the player presses space, a new object companion is created, up to for. So, how do I do that? Sprites are in groups in the main loop, but how do I append/add an instance to a group from the class. In other words: how do I access the main loop from an object's method? (if that is possible). Another question: I am making a Every Extend clone to learn the magic of pygame. I have some trouble with two things: 1. The chain reaction - I am using rect.inflate, but it seems to be quite unprecise. Is it just better to load a new image, a explosion, with a different rect, instead of inflating the original's rect? 2. Dying: as someone said, dying is easy, comedy is hard. OK, so when the hero dies, I need to kill the sprite, make a timer, and then instantiate it again. And I have no clue how to do any of these things (well, except self.(kill)). I am not fishing for code here, but for how to think about how to solve this problem. I hope I have been at least a bit clear. Thanks to those who reach here and have read the text :) and thanks in advance for the help! cheers, Naranjito the Newbie
Re: [pygame] A bunch of newbie questions
On 11/26/07, Miguel Sicart [EMAIL PROTECTED] wrote: Hi all, Hi First of all - this email has a collection of basic, newbie questions. I hope this doesn't break etiquette or it's too annoying - if these are too many questions, or too basic (and there is somewhere else I could find answers), please let me know :) It looks like everything here is Pygame stuff, so you're OK! On to the questions. I am not a programmer, and only recently I took up Python/Pygame. While Object Orientation does not seem conceptually quite hard, I think the implementation puzzles. So here's the question: I have a class that defines the main object with a keyboard method (among others) that controls player input class Hero(pygame.sprite.Sprite) def keyboard(self) I have another object called companion, which just moves around the Hero What I want is that, when the player presses space, a new object companion is created, up to for. So, how do I do that? Sprites are in groups in the main loop, but how do I append/add an instance to a group from the class. In other words: how do I access the main loop from an object's method? (if that is possible). Another question: I am making a Every Extend clone to learn the magic of pygame. I have some trouble with two things: 1. The chain reaction - I am using rect.inflate, but it seems to be quite unprecise. Is it just better to load a new image, a explosion, with a different rect, instead of inflating the original's rect? If you're sizing something repeatedly, then the image quality will go down. (Try doubling and then halving an image in photoshop). Better to make a different surface. I'm not sure that's your question though. 2. Dying: as someone said, dying is easy, comedy is hard. OK, so when the hero dies, I need to kill the sprite, make a timer, and then instantiate it again. And I have no clue how to do any of these things (well, except self.(kill)). I am not fishing for code here, but for how to think about how to solve this problem. I hope I have been at least a bit clear. Thanks to those who reach here and have read the text :) and thanks in advance for the help! For class instances, add them to lists: whatevers = [] class whatever: def __init__(self): self.something = something whatevers.append(whatever()) Sorry I don't have time for anything more detailed. cheers, Naranjito the Newbie Bye! Ian
Re: [pygame] A bunch of newbie questions
Miguel Sicart wrote: What I want is that, when the player presses space, a new object companion is created, up to for. So, how do I do that? Sprites are in groups in the main loop, but how do I append/add an instance to a group from the class. In other words: how do I access the main loop from an object's method? (if that is possible). Welcome, hopefully you can get all the answers you need here. When I'm making games, the game objects themselves are not responsible for directly handling input, this is usually a good idea. You would some part of the main loop check for the spacebar, and create and track the created helpers. If the design is that the player object should really own the helper objects, then make a list or a set on the player class. The player object can create the helpers and keep track of them for itself. For a game object to talk to the main loop, you need to set up some way to access the loop. Typically a game only has one main loop. Keep a reference to this main loop in a common module your game shared. Then anyone can reference the current main loop through the module. 1. The chain reaction - I am using rect.inflate, but it seems to be quite unprecise. Is it just better to load a new image, a explosion, with a different rect, instead of inflating the original's rect? It kind of depends on the number of effects that will be going on. The easiest will be for each explosion in the chain reaction to create a new game object with its own image and rect. If you are going to have many overlapping objects in a rectangle. You may want to keep track of only the bounding rectangle of all of them. Then you can use this single rectangle for calls to pygame.display.update(). 2. Dying: as someone said, dying is easy, comedy is hard. OK, so when the hero dies, I need to kill the sprite, make a timer, and then instantiate it again. And I have no clue how to do any of these things (well, except self.(kill)). I am not fishing for code here, but for how to think about how to solve this problem. Your game main loop will work with something usually called a state machine. This mainly means some kind of class or global variables that tell the game what mode it is in. The job of the state machine is to track what is going on, and figure out when to switch to some other mode. A simplistic method would use a set of strings with the main loop. if game_mode == player_alive: handle_input() move_player() if player.is_killed(): if number_of_lives == 0: game_mode == game_over else: game_mode == player_dead killed_time = current_time() elif game_mode == player_dead: if current_time() - killed_time 3seconds(): player.restart() game_mode == player_alive
