ebiten/internal/hooks/hooks.go

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// Copyright 2018 The Ebiten Authors
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//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package hooks
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var onBeforeUpdateHooks = []func() error{}
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// AppendHookOnBeforeUpdate appends a hook function that is run before the main update function
// every frame.
func AppendHookOnBeforeUpdate(f func() error) {
onBeforeUpdateHooks = append(onBeforeUpdateHooks, f)
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}
func RunBeforeUpdateHooks() error {
for _, f := range onBeforeUpdateHooks {
if err := f(); err != nil {
return err
}
}
return nil
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}