- Remove usingnamespace usage

- Introduce a new system for interfaces:
  - They are defined as structs that are composed as the first member of the implementation
  - `initInterface` is used to build VTable default values at comptime automatically
- Enhance the DebugRenderer test to verify that the render functions are called
- Change the signature of DestroyTriangleBatch to pass non-const user pointer

Author: kcbanner

build.zig

@@ -58,21 +58,18 @@ pub fn build(b: *std.Build) void {
     });
     zjolt.addIncludePath(b.path("libs/JoltC"));
 
-    const joltc = if (options.shared) blk: {
-        const lib = b.addSharedLibrary(.{
-            .name = "joltc",
+    const joltc = b.addLibrary(.{
+        .name = "joltc",
+        .linkage = if (options.shared) .dynamic else .static,
+        .root_module = b.createModule(.{
             .target = target,
             .optimize = optimize,
-        });
-        if (target.result.os.tag == .windows) {
-            lib.root_module.addCMacro("JPC_API", "extern __declspec(dllexport)");
-        }
-        break :blk lib;
-    } else b.addStaticLibrary(.{
-        .name = "joltc",
-        .target = target,
-        .optimize = optimize,
+        }),
     });
+
+    if (options.shared and target.result.os.tag == .windows)
+        joltc.root_module.addCMacro("JPC_API", "extern __declspec(dllexport)");
+
     b.installArtifact(joltc);
 
     joltc.addIncludePath(b.path("libs"));
@@ -248,9 +245,11 @@ pub fn build(b: *std.Build) void {
 
     const tests = b.addTest(.{
         .name = "zphysics-tests",
-        .root_source_file = b.path("src/zphysics.zig"),
-        .target = target,
-        .optimize = optimize,
+        .root_module = b.createModule(.{
+            .root_source_file = b.path("src/zphysics.zig"),
+            .target = target,
+            .optimize = optimize,
+        }),
     });
     b.installArtifact(tests);
 

build.zig.zon

@@ -2,6 +2,7 @@
     .name = .zphysics,
     .fingerprint = 0x1def6aac00c4909d,
     .version = "0.2.0-dev",
+    .minimum_zig_version = "0.14.1",
     .paths = .{
         "build.zig",
         "build.zig.zon",

libs/JoltC/JoltPhysicsC.cpp

@@ -741,7 +741,7 @@ class DebugRendererImpl final : public JPH::DebugRenderer
         {
             if (sInstance && sInstance->c_renderer->vtbl->DestroyTriangleBatch)
             {
-                sInstance->c_renderer->vtbl->DestroyTriangleBatch(sInstance->c_renderer, c_primitive);
+                sInstance->c_renderer->vtbl->DestroyTriangleBatch(sInstance->c_renderer, (void*)c_primitive);
             }
         }
 

libs/JoltC/JoltPhysicsC.h

@@ -1060,7 +1060,7 @@ typedef struct JPC_DebugRendererVTable
 
     // Optional
     void
-    (*DestroyTriangleBatch)(void *in_self, const void *in_primitive);
+    (*DestroyTriangleBatch)(void *in_self, void *in_primitive);
 
     // Required, *cannot* be NULL.
     void