GLforth

About

GLforth is an OpenGL engine written in Gforth.

Gameplay

You were playing a nice game of chess when suddenly the holodeck failed, security mode was disabled and you were attacked by Tron-Observers from the evil kernel32. Luckily you have found a rocket launcher from the Umbrella cooperation to defend yourself. Try to survive as long as possible, maybe someone (not the masterchief!) will come through the halo in the center of the world and rescue you ;)

Authors

• Gerald Wodni ( Programmer - Maintainer )
• Daniel Abouakil ( Artist, Debugging - inactive )
• Norbert Sattler ( Artist, Debugging - inactive )

Screenshots

r18

r29

Benchmarks

Normal Game

CPU	GPU	Graphics-RAM	Resolution	Multisamples	Average FPS
i386 1800MHz 512 KB Cache	GForce 8800	512	1024x768	4	626
2	1	2048	1280x1024	64	42
Dual Athlon 2,3 GHz	Radeon HD 3450	512	1024x768	1	120.040.1
pentium dual core 2.7ghz	radeon something	512	1280x1024	1	974
x86_64 8x3400 MHz 8512 KB Cache	GeForce GTX 645	1024	1280x1024	1	60

Cube Benchmarks

CPU	GPU	Graphics-RAM	Resolution	Multisamples	Cubes	Average FPS
i386 1800MHz 512 KB Cache	GForce 8800	512	1024x768	4	15625	13.39
		64	640x480	1
		256	640x480	4
i386 1800MHz 64 KB Cache	GForce 4	128	1024x768	1
i386 1800MHz 64 KB Cache	GForce 4	128	800x600	1	1024
fdbv	242334	64	640x480	1	2345245	3453453
1333	1000	128	1280x1024	8	4	50
fg		64	640x480	1
		64	640x480	1
		2048	1280x1024	4
4444	4555	512	640x480	64	555	3555

Please submit your own benchmark

CPU:	[1]
GPU:	[1]
Graphics-RAM:	64 MB 128 MB 256 MB 512 MB 1024 MB 2048 MB [2]
Resolution:	640x480 800x600 1024x768 1280x1024 [2]
Multisamples:	1248163264 [2]
Mode:	Cube Benchmark Normal Game [3]
Number of Cubes:
Average FPS:

^[1]take a look at already submitted Benchmarks and try to choose a similar string
^[2]if your value is not in the list please let me know ↓
^[3]total number of cubes (displayed on stdout)

Problems / Feedback

Feel free to submit your ideas and experiences or problems

Forth-Feedback

Your Email:	[4]
Message:

^[4]Your email will not be saved, it's just to be able to reply to you.

Documentation

Control

• Keys

  Key	Action
  ESC	Exit Game (clean exit)
  TAB	Toggle Console-Active
  W,S	Move Forward/Backward
  E,R	Move Up/Down
  F	Toggle Flashlight
  P	Toggle Presentation Mode
  J	Next Slide
  K	Previous Slide

• Console
  Basically you can call every word from the console, once it is found, it gets executed, and if nothing crashed a green smiley is displayed. If the word is not found, a red smiley is displayed. However, if you use words with stack effects or other side-effects, the program will most likely crash, so here is a list of useful commands:

  Command	Result
  enemies-show	Displays enemies (play the game)
  enemies-hide	Hide enemies (stop the game)
  houses-show	Show 2 houses
  houses-hide	Hide houses
  test	You get a green smiley

Settings

• gams.fs
  • window-width, window-height: window (contents) resolution
  • window-fullscreen: instead of creating a window, glforth will render on the whole screen
  • window-fovy: player's field of view angle
  • window-clipping-near, window-clipping-far: elements outside this range will not be rendered
  • player-movement-basic-speed: based upon this value the players frame based speed will be calculated
  • fps-update: specifies the milliseconds between the environment updates (in the future the world will be updates after every frame)
  • gl-multisamples: anti-aliasing factor (0 disables it), leave this to 0 until your gforth renders without problems
  • cube-number: enables cube-benchmark (0 disables it), the number itself specifies the cubes per dimension
  • debug-mode: will output some additional information to stdout during the game
• enemies.fs
  • enemies-number: Number of allocated enemies
  • enemy-dying-decrease: Alpha loss per world update
• rockets.fs
  • rockets-light-offset: OpenGL features 8 lights supported by the GPU, this number specifies the first light used by rockets, together with ↓ this value must be ≤ 8
  • rockets-number: number of allocated rockets
  • rocket-segments: as a rocket consists of a cone, a pipe and a circle its not possible to display it without jaggies, increase this number to make the rocket "rounder"
  • rocket-length-scale, rocket-diameter-scale: rocket's size in OpenGL-Units
  • rocket-max-distance: maximum distance from world-center (when a rocket passes this distance it will self destruct)
  • rocket-destruction-distance: rockets proximity ability, once a rocket gets this close of an enemies center it will blow up and kill the enemy
• world.fs
  • star-number: Number of displayed stars
  • star-seed: seed of the star-placing random generator
  • star-size: size of a star (in OpenGl units)
  • world-sections: quads per dimension (in OpenGL units)

A small howto and module description will be available soon, please consult your memories of the presentation for now ;)

Requirements

• Gforth 0.6.9
• libtool (also required by Gforth 0.6.9 itself)
• libSDL
• libGL
• libGLU