aaronfranke

Computer Information:
    Manufacturer:  Unknown
    Model:  Unknown
    Form Factor: Laptop
    No Touch Input Detected

Processor Information:
    CPU Vendor:  AuthenticAMD
    CPU Brand:  AMD A6-3400M APU with Radeon(tm) HD Graphics
    CPU Family:  0x12

aaronfranke

# This is a prototype syntax for "Aaron Lang".
# Inspired by C#, C++, GDScript, and Python.
# I doubt this would ever be a thing, but it shows what I would put in "the perfect language"

# The file is ".py" to make GitHub display the comments as a different color, but to be clear, this is nowhere close to Python.

# Comments are defined with "# " at the start.
# This is because "//" is used for math (floor division).
/* Inline and multi-line comments are also supported, but I only use the hash in this file */

aaronfranke

Godot 3.1 Beta 3 Mono:

OpenGL ES 3.0 Renderer: GeForce GTX 770/PCIe/SSE2
Editing project: /home/aaronfranke/workspace/SpaceStation (::home::aaronfranke::workspace::SpaceStation)
OpenGL ES 3.0 Renderer: GeForce GTX 770/PCIe/SSE2
Running: /home/aaronfranke/Documents/Godot/3.1-mono/Godot --path /home/aaronfranke/workspace/SpaceStation --remote-debug 127.0.0.1:6007 --allow_focus_steal_pid 26201 --debug-collisions --position 160,90
OpenGL ES 3.0 Renderer: GeForce GTX 770/PCIe/SSE2
Stacktrace:

  at <unknown> <0xffffffff>

aaronfranke

* System information from steam (`Steam` -> `Help` -> `System Information`) in a [gist](https://gist.github.com/): 

Computer Information:
    Manufacturer:  Unknown
    Model:  Unknown
    Form Factor: Desktop
    No Touch Input Detected

Processor Information:
    CPU Vendor:  GenuineIntel

aaronfranke

#!/usr/bin/env bash

# This script bulk-renames many things in Godot 3 projects to hopefully
# make it easier to convert them to Godot 4. The goal is to do as much
# replacing as possible here so that the diffs Godot produces are smaller.

set -uo pipefail
IFS=$'\n\t'

# Loops through all text files tracked by Git.

aaronfranke

// Here are three of the cases:

        case Variant::VECTOR2: {
            Vector2 val;
            if (type & ENCODE_FLAG_64) {
                ERR_FAIL_COND_V((size_t)len < sizeof(double) * 2, ERR_INVALID_DATA);
                val.x = decode_double(&buf[0]);
                val.y = decode_double(&buf[sizeof(double)]);

                if (r_len) {

aaronfranke

Aaron Franke

I am working on a standard for specifying parameters for rigid body physics. This standard needs to support multiple physics engines. I already have parameters for the body's mass, linear velocity, and angular velocity. I need to add a new parameter for the inertia tensor, which describes the body's resistance to be rotated in different directions. The problem is that some physics engines implement the inertia tensor as a 3x3 matrix, and some physics engines implement inertia as a Vector3. I am thinking that I should specify the parameter as a 3x3 matrix, and include algorithms to convert to and from Vector3 inertia to support those physics engines that use Vector3 inertia. What is the formula to do this? Also, can you evaluate if my approach is portable?

ChatGPT

Your approach of specifying the inertia tensor as a 3x3 matrix and including algorithms to convert to and from Vector3 inertia is a good way to handle the variability in how different physics engines implement inertia. To convert be

aaronfranke

# IEEE-style floating-point format table generator (GDScript)
# Python version: https://gist.github.com/aaronfranke/0d1217e521c4ec784d39e92b5f039115
# GDScript version: https://gist.github.com/aaronfranke/8b2c39bfbe48068c574e4daf2710c875
extends Node

# SEMB values can describe any IEEE-like binary floating-point format.
var sign_bit: bool = true
var exponent_bits: int = 2
var mantissa_bits: int = 1
## Can be set to an integer. If null, the bias will be automatically determined

aaronfranke

# IEEE-style floating-point format table generator (Python)
# Python version: https://gist.github.com/aaronfranke/0d1217e521c4ec784d39e92b5f039115
# GDScript version: https://gist.github.com/aaronfranke/8b2c39bfbe48068c574e4daf2710c875
import copy

# SEMB values can describe any IEEE-like binary floating-point format.
sign_bit: bool = True
exponent_bits: int = 4
mantissa_bits: int = 3
## Can be set to an integer. If null, the bias will be automatically determined

aaronfranke

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