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direct bench

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This commit is contained in:
Mike 2020-06-19 23:07:40 -07:00
parent 7874ddf6b6
commit cc92e4a225
1 changed files with 23 additions and 2 deletions
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25
zig-ecs/examples/view_vs_group.zig
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@ -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 {