From ac17a79631507d6d9560d623104a933fc8c9c25d Mon Sep 17 00:00:00 2001
From: Mike <mike@prime31.com>
Date: Thu, 11 Jun 2020 22:34:25 -0700
Subject: [PATCH] more sorting...

---
 zig-ecs/src/ecs/utils.zig | 2 +-
 zig-ecs/src/ecs/views.zig | 8 +++++++-
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/zig-ecs/src/ecs/utils.zig b/zig-ecs/src/ecs/utils.zig
index 770ade1..2bdc03d 100644
--- a/zig-ecs/src/ecs/utils.zig
+++ b/zig-ecs/src/ecs/utils.zig
@@ -49,7 +49,7 @@ pub fn ReverseSliceIterator(comptime T: type) type {
 }
 
 /// sorts items using lessThan and keeps sub_items with the same sort
-pub fn sortSub(comptime T1: type, comptime T2: type, items: []T1, sub_items: []T2, lessThan: fn (void, lhs: T1, rhs: T1) bool) void {
+pub fn sortSub(comptime T1: type, comptime T2: type, items: []T1, sub_items: []T2, comptime lessThan: fn (void, lhs: T1, rhs: T1) bool) void {
     var i: usize = 1;
     while (i < items.len) : (i += 1) {
         const x = items[i];
diff --git a/zig-ecs/src/ecs/views.zig b/zig-ecs/src/ecs/views.zig
index 505973d..65506f4 100644
--- a/zig-ecs/src/ecs/views.zig
+++ b/zig-ecs/src/ecs/views.zig
@@ -134,7 +134,13 @@ pub fn MultiView(comptime n_includes: usize, comptime n_excludes: usize) type {
                 sub_items[i] = store.len();
             }
 
-            utils.sortSub(usize, u32, sub_items[0..], self.type_ids[0..], std.sort.asc(usize));
+            const asc_usize = struct {
+                fn sort(ctx: void, a: usize, b: usize) bool {
+                    return a < b;
+                }
+            };
+
+            utils.sortSub(usize, u32, sub_items[0..], self.type_ids[0..], asc_usize.sort);
         }
 
         pub fn iterator(self: *Self) Iterator {