mirror of
https://github.com/hajimehoshi/ebiten.git
synced 2024-09-21 22:02:23 +02:00
137 lines
2.7 KiB
Go
137 lines
2.7 KiB
Go
/*
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Copyright 2014 Hajime Hoshi
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package blocks
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import (
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"github.com/hajimehoshi/ebiten"
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"image"
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_ "image/png"
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"os"
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"sync"
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)
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type namePath struct {
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name string
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path string
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}
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type nameSize struct {
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name string
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size Size
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}
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type Textures struct {
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texturePaths chan namePath
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renderTargetSizes chan nameSize
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textures map[string]ebiten.TextureID
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renderTargets map[string]ebiten.RenderTargetID
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sync.RWMutex
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}
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func NewTextures() *Textures {
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textures := &Textures{
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texturePaths: make(chan namePath),
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renderTargetSizes: make(chan nameSize),
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textures: map[string]ebiten.TextureID{},
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renderTargets: map[string]ebiten.RenderTargetID{},
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}
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go func() {
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for {
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textures.loopMain()
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}
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}()
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return textures
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}
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func loadImage(path string) (image.Image, error) {
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file, err := os.Open(path)
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if err != nil {
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return nil, err
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}
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defer file.Close()
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img, _, err := image.Decode(file)
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if err != nil {
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return nil, err
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}
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return img, nil
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}
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func (t *Textures) loopMain() {
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select {
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case p := <-t.texturePaths:
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name := p.name
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path := p.path
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go func() {
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img, err := loadImage(path)
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if err != nil {
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panic(err)
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}
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id, err := ebiten.NewTextureID(img, ebiten.FilterNearest)
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if err != nil {
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panic(err)
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}
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t.Lock()
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defer t.Unlock()
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t.textures[name] = id
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}()
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case s := <-t.renderTargetSizes:
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name := s.name
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size := s.size
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go func() {
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id, err := ebiten.NewRenderTargetID(size.Width, size.Height, ebiten.FilterNearest)
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if err != nil {
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panic(err)
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}
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t.Lock()
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defer t.Unlock()
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t.renderTargets[name] = id
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}()
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}
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}
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func (t *Textures) RequestTexture(name string, path string) {
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t.texturePaths <- namePath{name, path}
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}
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func (t *Textures) RequestRenderTarget(name string, size Size) {
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t.renderTargetSizes <- nameSize{name, size}
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}
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func (t *Textures) Has(name string) bool {
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t.RLock()
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defer t.RUnlock()
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_, ok := t.textures[name]
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if ok {
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return true
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}
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_, ok = t.renderTargets[name]
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return ok
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}
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func (t *Textures) GetTexture(name string) ebiten.TextureID {
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t.RLock()
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defer t.RUnlock()
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return t.textures[name]
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}
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func (t *Textures) GetRenderTarget(name string) ebiten.RenderTargetID {
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t.RLock()
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defer t.RUnlock()
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return t.renderTargets[name]
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}
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