Looking for Feedback (3D engine)

[drug007]

On 17.05.2025 01:26, Danny Arends wrote:
> 
> Never seen it being a problem, but changing line 94 of lsystem.d from
> 
> ```
>    test.rules[Symbols.Origin] ~= Rule("W.O", 5);
> ```
> 
> To
> 
> ```
>    test.rules[Symbols.Origin] = Rule("W.O", 5);
> ```
> 
> Would fix it, I guess appending might not be allowed when the key 
> doesn't exist yet.
> 
> 
This patch fixed the issue:
```bash
root at 1be5cfa937c3:/DImGui#  git diff
diff --git a/src/math/lsystem.d b/src/math/lsystem.d
index 394e902..02c085d 100644
--- a/src/math/lsystem.d
+++ b/src/math/lsystem.d
@@ -91,7 +91,7 @@ struct LSystem {

  LSystem createLSystem() {
    auto test = LSystem([Symbols.Origin]);
-  test.rules[Symbols.Origin] ~= Rule("W.O", 5);
+  test.rules[Symbols.Origin] = Rules([Rule("W.O", 5)]);
    test.rules[Symbols.Origin] ~= Rule("S.O", 5);
    test.rules[Symbols.Origin] ~= Rule("A.O", 5);
    test.rules[Symbols.Origin] ~= Rule("D.O", 5);
```
The demo compiles and works!