From cc92e4a22520f1d697ecabe87e29b31c0c67a321 Mon Sep 17 00:00:00 2001 From: Mike Date: Fri, 19 Jun 2020 23:07:40 -0700 Subject: [PATCH] direct bench --- zig-ecs/examples/view_vs_group.zig | 25 +++++++++++++++++++++++-- 1 file changed, 23 insertions(+), 2 deletions(-) diff --git a/zig-ecs/examples/view_vs_group.zig b/zig-ecs/examples/view_vs_group.zig index ec52e5c..b7f84a2 100644 --- a/zig-ecs/examples/view_vs_group.zig +++ b/zig-ecs/examples/view_vs_group.zig @@ -53,7 +53,7 @@ fn iterateView(reg: *ecs.Registry) void { fn nonOwningGroup(reg: *ecs.Registry) void { std.debug.warn("--- non-owning ---\n", .{}); var timer = std.time.Timer.start() catch unreachable; - var group = reg.group(.{}, .{Velocity, Position}, .{}); + var group = reg.group(.{}, .{ Velocity, Position }, .{}); var end = timer.lap(); std.debug.warn("group (create): {d}\n", .{@intToFloat(f64, end) / 1000000000}); @@ -90,8 +90,29 @@ fn owningGroup(reg: *ecs.Registry) void { timer.reset(); group.each(each); - end = timer.read(); + end = timer.lap(); std.debug.warn("group (each): \t{d}\n", .{@intToFloat(f64, end) / 1000000000}); + + timer.reset(); + + var storage = reg.assure(Velocity); + var vel = storage.instances.items; + var pos = reg.assure(Position).instances.items; + + var index: usize = group.group_data.current; + while (true) { + if (index == 0) break; + index -= 1; + + const ent = storage.set.dense.items[index]; + const entity_index = storage.set.index(ent); + + pos[entity_index].x += pos[entity_index].x; + pos[entity_index].y += pos[entity_index].y; + } + + end = timer.lap(); + std.debug.warn("group (direct): {d}\n", .{@intToFloat(f64, end) / 1000000000}); } fn each(e: struct { vel: *Velocity, pos: *Position }) void {