Re: Less verbose or at least "higher level" 2D game engines for Dlang.
On Saturday, 30 December 2023 at 00:47:04 UTC, Agent P. wrote: Hello everyone, I'm looking for a 2D game engine for Dlang that offers flexibility but has a high-level interface, preferably less verbose. Although I've explored options on GitHub and in general, I haven't found something that exactly fits what I need. Often the recommendations mention SFML, SDL or OpenGL (obvious links), but I would like to consider those options only after exploring engines with less verbose APIs. I don't need much, I'm just looking for suggestions for engines that meet these criteria. Does anyone have any recommendations? Thank you for your time. There is godot-dlang, while it is not a D engine but just bindings, the Godot itself is a full featured engine including both 2D and 3D, it has UI framework and editor too. I haven't even heard of any other D engines with editor btw, but unless you are need something minimal to make a basic one screen game with minimal build size it is a nice feature to have.
Re: Less verbose or at least "higher level" 2D game engines for Dlang.
On Saturday, 30 December 2023 at 00:47:04 UTC, Agent P. wrote: Hello everyone, I'm looking for a 2D game engine for Dlang that offers flexibility but has a high-level interface, preferably less verbose. Although I've explored options on GitHub and in general, I haven't found something that exactly fits what I need. Often the recommendations mention SFML, SDL or OpenGL (obvious links), but I would like to consider those options only after exploring engines with less verbose APIs. I don't need much, I'm just looking for suggestions for engines that meet these criteria. Does anyone have any recommendations? Thank you for your time. raylib, take your pick from 5 or so different bindings
Less verbose or at least "higher level" 2D game engines for Dlang, again.
Hello everyone, I'm looking for a 2D game engine for Dlang that offers flexibility but has a high-level API, preferably less verbose. Although I've explored options on GitHub and in general, I haven't found something that exactly fits what I need. Often the recommendations mention SFML, SDL or OpenGL (obvious links), but I would like to consider those options only after exploring engines with less verbose APIs. I don't need much, I'm just looking for suggestions for engines that meet these criteria. Does anyone have any recommendations? Thank you for your time.
Re: jsoniopipe - exaples?
On Friday, 29 December 2023 at 08:09:58 UTC, Zz wrote:
Hi,
Here are some samples from the std.json documentation.
Any idea on how to do something similar using jsoniopipe?
Directly copied from https://dlang.org/phobos/std_json.html
import std.conv : to;
// parse a file or string of json into a usable structure
string s = `{ "language": "D", "rating": 3.5, "code": "42" }`;
JSONValue j = parseJSON(s);
// j and j["language"] return JSONValue,
// j["language"].str returns a string
writeln(j["language"].str); // "D"
writeln(j["rating"].floating); // 3.5
// check a type
long x;
if (const(JSONValue)* code = "code" in j)
{
if (code.type() == JSONType.integer)
x = code.integer;
else
x = to!int(code.str);
}
// create a json struct
JSONValue jj = [ "language": "D" ];
// rating doesnt exist yet, so use .object to assign
jj.object["rating"] = JSONValue(3.5);
// create an array to assign to list
jj.object["list"] = JSONValue( ["a", "b", "c"] );
// list already exists, so .object optional
jj["list"].array ~= JSONValue("D");
string jjStr =
`{"language":"D","list":["a","b","c","D"],"rating":3.5}`;
writeln(jj.toString); // jjStr
jsoniopipe is not focused on the `JSONValue`
[equivalent](https://github.com/schveiguy/jsoniopipe/blob/7d63a2e19ae46a1ae56ccab4c6c872bcce094286/source/iopipe/json/dom.d#L22)
You can see it's pretty basic and just serves as a "catch any
type" thing.
It could easily be replaced with `std.json.JSONValue`, though I
like the fact that it's templated on the string type.
The main focus of jsoniopipe is parsing and serialization -- I
prefer to use real concrete structs/classes rather than variant
types. In fact, the huge benefit from the library is that there
is no intermediate type.
But yeah, I could ingest all the functionality from std.json
there. Or maybe even just use `JSONValue` from std.json. Could
you make an issue?
-Steve
Re: How to implement filterMap
On Friday, 29 December 2023 at 23:10:47 UTC, Christian Köstlin wrote: Is there a way to implement filterMap (meaning do mapping of a range, but if something happens during the map, leave this element out of the resulting range). It's probably not a good idea to do this in general. Expecting a lot of exceptions handling happening during normal program execution (if you want to filter out roughly half of the input array) will result in a major performance loss. Exceptions are best left to just do error handling on a very rarely used code path for troubleshooting purposes.
Blues require to road for match versus Kings
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Re: Less verbose or at least "higher level" 2D game engines for Dlang.
On Saturday, 30 December 2023 at 00:47:04 UTC, Agent P. wrote: Hello everyone, I'm looking for a 2D game engine for Dlang that offers flexibility but has a high-level interface, preferably less verbose. Although I've explored options on GitHub and in general, I haven't found something that exactly fits what I need. Often the recommendations mention SFML, SDL or OpenGL (obvious links), but I would like to consider those options only after exploring engines with less verbose APIs. I don't need much, I'm just looking for suggestions for engines that meet these criteria. Does anyone have any recommendations? Thank you for your time. Sorry, ignore the "higher level interface" part, I was referring to a less verbose, higher level API.
Less verbose or at least "higher level" 2D game engines for Dlang.
Hello everyone, I'm looking for a 2D game engine for Dlang that offers flexibility but has a high-level interface, preferably less verbose. Although I've explored options on GitHub and in general, I haven't found something that exactly fits what I need. Often the recommendations mention SFML, SDL or OpenGL (obvious links), but I would like to consider those options only after exploring engines with less verbose APIs. I don't need much, I'm just looking for suggestions for engines that meet these criteria. Does anyone have any recommendations? Thank you for your time.
How to implement filterMap
Is there a way to implement filterMap (meaning do mapping of a
range, but if something happens during the map, leave this
element out of the resulting range).
I have two solutions (one is with evaluating the mapping function
several times), and one tries to store the result for the next
front call like this.
Both do not seem very clean for all possible types. Here the
version that tries to cache the mapping results.
```d
template filterMap(mapping...) if (mapping.length == 1)
{
auto filterMap(Range)(Range range)
{
import std.range : ElementType, empty;
import std.functional : unaryFun;
alias RangeElement = ElementType!Range;
alias mappingFunction = unaryFun!mapping;
typeof(mappingFunction(RangeElement.init)) result;
void findNext() {
while (!range.empty)
{
try
{
result = mappingFunction(range.front);
break;
}
catch (Exception e)
{
range.popFront;
}
}
}
findNext();
struct FilterMap
{
bool empty()
{
return range.empty;
}
auto ref front()
{
return result;
}
void popFront()
{
range.popFront;
findNext();
}
}
return FilterMap();
}
}
@("filterMap") unittest {
import std.conv : to;
import std.array : array;
["1", "2", "abc", ""].filterMap!(s => s.to!int *
2).array.should == [2, 4];
}
```
Kind regards,
Christian
Re: Indirect access to variables.
On Friday, 29 December 2023 at 17:11:49 UTC, DLearner wrote:
Compile-time:
[...]
Is there a 'foo1' that yields 1 from the snippet below?
[...]
Similarly, execution-time, is there a foo2 that wields 2 from
the snippet below:
[...]
**compile-tome**
```d
void main() {
import std.stdio;
size_t var1 = 1;
size_t var2 = 8;
writeln(mixin(var1.stringof));
writeln(mixin(var2.stringof));
}
```
**run-tome**
Given the information you provide I'd say you can use an
associative array:
```d
size_t*[string] registry;
void main() {
import std.stdio;
size_t var1 = 1;
size_t var2 = 8;
registry[var1.stringof] = &var1;
registry[var2.stringof] = &var2;
writeln(*registry[var1.stringof]);
writeln(*registry[var2.stringof]);
}
```
but take care to the entries lifetime, that's basically not safe
as this escapes stack addresses.
Indirect access to variables.
Compile-time:
Is there a 'foo1' that yields 1 from the snippet below?
```
void main() {
import std.stdio;
size_t var1 = 1;
char[4] Txt = cast(char[4])("var1");
writeln(foo1(Txt));
}
```
Similarly, execution-time, is there a foo2 that wields 2 from the
snippet below:
```
void main() {
import std.stdio;
size_t var2 = 2;
char[4] Txt;
// Txt = various things at run-time;
// But finally:
Txt = cast(char[4])("var2");
writeln(foo2(Txt));
}
```
jsoniopipe - exaples?
Hi,
Here are some samples from the std.json documentation.
Any idea on how to do something similar using jsoniopipe?
Directly copied from https://dlang.org/phobos/std_json.html
import std.conv : to;
// parse a file or string of json into a usable structure
string s = `{ "language": "D", "rating": 3.5, "code": "42" }`;
JSONValue j = parseJSON(s);
// j and j["language"] return JSONValue,
// j["language"].str returns a string
writeln(j["language"].str); // "D"
writeln(j["rating"].floating); // 3.5
// check a type
long x;
if (const(JSONValue)* code = "code" in j)
{
if (code.type() == JSONType.integer)
x = code.integer;
else
x = to!int(code.str);
}
// create a json struct
JSONValue jj = [ "language": "D" ];
// rating doesnt exist yet, so use .object to assign
jj.object["rating"] = JSONValue(3.5);
// create an array to assign to list
jj.object["list"] = JSONValue( ["a", "b", "c"] );
// list already exists, so .object optional
jj["list"].array ~= JSONValue("D");
string jjStr =
`{"language":"D","list":["a","b","c","D"],"rating":3.5}`;
writeln(jj.toString); // jjStr
Regards,
Zz
