# Untangle
Amiga port of a popular logic game.

## The Game
Untangle is a logic puzzle, where the player faces a set of dots connected
by lines. Usually the set is untidy, many lines cross another ones. The
game goal is to untangle lines by moving dots, so finally no line cross
another.

## Project Goals
* Game should be system friendly, working in a window on Workbench, using
  only documented APIs.
* Minimum system version is 3.0.
* RTG (graphic cards) should be supported out of the box. Without dedicated
  code paths and explicit opening of RTG libraries, if possible.
* Would be nice if it works on MorphOS, AmigaOS 4, AROS using M68k
  emulation built into these operating systems.
* Should be comfortably playable on stock A1200, stock A500 is not a Holy
  Grail, but why not.

## Building
Project is developed on a real Amiga 1200 with 68020  28 MHz and 64 MB
fast RAM. Compiler used is native GCC 2.95.3 with usual GeekGadgets
environment, and "make" tool. To build the game just enter

    make

in a shell.
At the moment test level file ("level.iff") is built manually from
assembler source "level.s" with

vasm -Fbin level.s -o level.iff

It implies that "vasm" assembler is also installed. This is a temporary
solution, I plan to add feature of creation and saving levels in the game
itself.

## Installation
Executable may be copied anywhere. "level.iff" file should be in the same
directory as executable. It runs from shell as well as from Workbench. For
now there is no icon for it.

## Usage
After starting select "New" from menu (or `RAmiga + n` from keyboard) to
load the test level.

## Requirements
* Amiga with any processor (code is compiled for 68000).
* Kickstart/Workbench 3.0 or higher.
* For now there is no detection of non-square pixel display modes, so dots
  are distorted on, for example, "PAL HighRes".

PERMISSION  UID  GID    PACKED    SIZE  RATIO METHOD CRC     STAMP     NAME
---------- ----------- ------- ------- ------ ---------- ------------ ----------
[generic]                 1225    2559  47.9% -lh5- 0fef Oct 11 21:38 untangle/goal-check.md
[generic]                  760    1616  47.0% -lh5- 7cf6 Oct 11 21:38 untangle/level-format.md
[generic]                   57      60  95.0% -lh5- a3f7 Oct 11 21:38 untangle/level.iff
[generic]                  635    1076  59.0% -lh5- 9b18 Oct 11 21:38 untangle/LICENSE
[generic]                 1014    1836  55.2% -lh5- 8ee6 Oct 11 21:38 untangle/README.md
[generic]                   40      40 100.0% -lh0- 8d26 Oct 28 14:06 untangle/README.md.info
[generic]                 2041    9226  22.1% -lh5- 23ab Oct 11 21:38 untangle/src/game.c
[generic]                  129     340  37.9% -lh5- a2a4 Oct 11 21:38 untangle/src/game.h
[generic]                  335     665  50.4% -lh5- 9eb2 Oct 28 14:01 untangle/src/GNUmakefile
[generic]                  104     202  51.5% -lh5- 8936 Oct 11 21:38 untangle/src/level.s
[generic]                 2355    7560  31.2% -lh5- 50a2 Oct 11 21:38 untangle/src/loader.c
[generic]                  279     702  39.7% -lh5- 4307 Oct 11 21:38 untangle/src/loader.h
[generic]                 1515    5928  25.6% -lh5- 63aa Oct 11 21:38 untangle/src/lscm.c
[generic]                  118     217  54.4% -lh5- eba5 Oct 11 21:38 untangle/src/lscm.h
[generic]                 1759    4944  35.6% -lh5- 4c18 Oct 11 21:38 untangle/src/main.c
[generic]                  827    2048  40.4% -lh5- 0796 Oct 11 21:38 untangle/src/main.h.bak
[generic]                  365     701  52.1% -lh5- c950 Oct 11 21:38 untangle/src/makefile
[generic]                  696    1549  44.9% -lh5- b29f Oct 11 21:38 untangle/src/menu.c
[generic]                  130     185  70.3% -lh5- da21 Oct 11 21:38 untangle/src/menu.h
[generic]                  501     968  51.8% -lh5- 284d Oct 11 21:38 untangle/src/start.c
[generic]                 3916    3916 100.0% -lh0- db91 Oct 28 21:18 Untangle.info
[generic]                  858    2123  40.4% -lh5- 9b5d Oct 29 16:07 untangle/src/main.h
[generic]                 7627   15524  49.1% -lh5- 9a4d Oct 29 16:11 untangle/Untangle
---------- ----------- ------- ------- ------ ---------- ------------ ----------
 Total        23 files   27286   63985  42.6%            Oct 30 00:59