davexunit/guile-2d

2D game programming library for GNU Guile - *OBSOLETE - try my new library named Chickadee*

guile-2d's Issues

file 2d/gl.scm missing

when trying to install make is giving this error
make: *** No rule to make target '2d/gl.go', needed by 'all-am'. Stop.

there is no 2d/gl.scm
there is however a 2d/wrappers/gl.scm

load-sprite segfaults when it can't find the image

if load-sprite is passed an image that's not there it causes a segmentation fault

The example in Readme doesn't work

when trying to run the simple example provided in the readme I get the following error

;;; /home/zan-xhipe/build/guile-2d/examples/square-man.scm:22:21: warning: datum (quote escape) cannot be meaningfully compared using eqv?' in clause ((any-equal? key (quote escape) (quote q)) (close-window) (quit)) of case expression (case key ((any-equal? key (quote escape) (quote q)) (close-window) (quit))) ;;; /home/zan-xhipe/build/guile-2d/examples/square-man.scm:22:29: warning: datum (quote q) cannot be meaningfully compared usingeqv?' in clause ((any-equal? key (quote escape) (quote q)) (close-window) (quit)) of case expression (case key ((any-equal? key (quote escape) (quote q)) (close-window) (quit)))
Backtrace:
In ice-9/boot-9.scm:
157: 9 [catch #t #<catch-closure 9ee1370> ...]
In unknown file:
?: 8 [apply-smob/1 #<catch-closure 9ee1370>]
In ice-9/boot-9.scm:
63: 7 [call-with-prompt prompt0 ...]
In ice-9/eval.scm:
432: 6 [eval # #]
In ice-9/boot-9.scm:
2320: 5 [save-module-excursion #<procedure 9efadc0 at ice-9/boot-9.scm:3961:3 ()>]
3968: 4 [#<procedure 9efadc0 at ice-9/boot-9.scm:3961:3 ()>]
1645: 3 [%start-stack load-stack ...]
1650: 2 [#<procedure 9efedc8 ()>]
In unknown file:
?: 1 [primitive-load "/home/zan-xhipe/build/guile-2d/examples/square-man.scm"]
?: 0 [add-hook! # #<procedure a5ea0c0 at ice-9/eval.scm:416:20 (a)> #]

ERROR: In procedure add-hook!:
ERROR: In procedure add-hook!: Wrong type argument in position 2: #<procedure a5ea0c0 at ice-9/eval.scm:416:20 (a)>

Error because use of "gl-generate-texture" or "gl-generate-drawable" in 2d/sprite.scm

Just running the examples gives an error saying that gl-generate-texture or gl-generate-drawable is an unbound variable.
It basically makes guile-2d unusable unless it's changed.
But on the other hand, it's probably pretty easy to fix.
This probably came about at this commit a7f7a16

Need collision detection and response system

Most games require some form of collision detection. I would like to propose a system similar to what I have in https://github.com/blob626/square-man.

At the moment it uses a grid for spatial partitioning. This could easily be changed. It supports handling the start of a collision, a continuing collision, and the end of a collision. At the moment it just uses the sprite's size to check for collision. (I didn't notice rect.scm until today. I'm going to change square-mans collisions to bounding boxes now)

I would be happy to work on this if you think its needed, but I'm just not sure how the user should interact with the collision system. Ideally they should just define the collision response handler, and give that to the scene. At the moment though they also need to define dimensions for the grid, how to get objects that can collide, and how to get objects sprites. Some of this will probably fall away once there is a scene graph and/or if a different spatial partitioning is used. (but grid is easy and for the type of game square-man is going to be, good enough)

Sprite batch draws parts of other sprites

when trying to draw sprites using with-sprite-batch I get strange issues were it seems to draw parts of other sprite.

(define (render)
  (with-sprite-batch
   *batch*
   (for-each
    (lambda (sprite) (draw-entity sprite))
    (append (list *player*)
        *bullets*
        *enemies*))))

'bullets' is a list that the bullets are added to when they are fired
'enemies' is a list that enemies get added to when they are spawned

full code can be found at https://github.com/blob626/square-man/tree/sprite-batch

I have three different textures, bullet.png (form the examples), player.png (64x64 yellow square), and enemy.png (64x64 red square).

when shooting bullets the bullet sprite appears but it sees to be above a portion of player sprite, so its aa yellow square the size of the bullet sprite with the bullet sprite on top of it. these little yellow squares move with the bullet but sometuimes seem to stay in one place. after a while. only some shots will have this effect, others will appear as expected.

The enemy move across the screen from right to left, it sees to be shadowed by some player sprite, if an enemy has been spawned all the squares made by the bullets will become red and any further bullets fired will be red with the same yellow shadow as the enemy.

This is probably because the number of sprites changes as you shoot and spawn enemies, so either I shouldn't be allowed to do that, in which case something should be said about it. If so then is there a suggestion for a better way to do (adding sprites dynamically, such as shooting and spawning enemies)

Segfaut in ftglSetFontFaceSize

FTGL warning: NULL pointer in ftglSetFontFaceSize Segmentation fault

Possible cause:

(define (fps-text) (make-textbox (load-font "fonts/Boxy-Bold.tff" 48) "noice stuff" (vector2 15 15) white 'left 200))

Dependencies installation docs are missing

I've tried to run examples but my complete lack of experience with guile prevented me from installing the dependencies (guile-sdl and guile-figl).

Can I have an example or a link to the manual?