mirror of
https://github.com/hajimehoshi/ebiten.git
synced 2024-11-10 13:07:26 +01:00
142 lines
3.5 KiB
Go
142 lines
3.5 KiB
Go
// Copyright 2020 The Ebiten Authors
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//
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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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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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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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// +build js
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package monogame
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import (
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"reflect"
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"runtime"
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"syscall/js"
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"unsafe"
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"github.com/hajimehoshi/ebiten/internal/affine"
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"github.com/hajimehoshi/ebiten/internal/driver"
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)
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// TODO: This implementation depends on some C# files that are not uploaded yet.
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// Create 'ebitenmonogame' command to generate C# project for the MonoGame.
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// TODO: Update this
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const temporaryNamespace = "Go2DotNet.Example.Rotate"
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type UpdateDrawer interface {
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Update() error
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Draw() error
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}
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type Game struct {
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binding js.Value
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update js.Func
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draw js.Func
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}
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func NewGame(ud UpdateDrawer) *Game {
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update := js.FuncOf(func(this js.Value, args []js.Value) interface{} {
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return ud.Update()
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})
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draw := js.FuncOf(func(this js.Value, args []js.Value) interface{} {
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return ud.Draw()
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})
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v := js.Global().Get(".net").Get(temporaryNamespace+".GameGoBinding").New(update, draw)
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g := &Game{
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binding: v,
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update: update,
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draw: draw,
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}
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runtime.SetFinalizer(g, (*Game).Dispose)
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return g
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}
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func (g *Game) Dispose() {
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runtime.SetFinalizer(g, nil)
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g.update.Release()
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g.draw.Release()
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}
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func (g *Game) Run() {
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g.binding.Call("Run")
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}
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func (g *Game) NewRenderTarget2D(width, height int) *RenderTarget2D {
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v := g.binding.Call("NewRenderTarget2D", width, height)
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r := &RenderTarget2D{
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v: v,
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binding: g.binding,
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}
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runtime.SetFinalizer(r, (*RenderTarget2D).Dispose)
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return r
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}
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func (g *Game) SetVertices(vertices []float32, indices []uint16) {
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var vs, is js.Value
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{
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h := (*reflect.SliceHeader)(unsafe.Pointer(&vertices))
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h.Len *= 4
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h.Cap *= 4
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bs := *(*[]byte)(unsafe.Pointer(h))
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runtime.KeepAlive(vertices)
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vs = js.Global().Get("Uint8Array").New(len(bs))
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js.CopyBytesToJS(vs, bs)
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}
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{
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h := (*reflect.SliceHeader)(unsafe.Pointer(&indices))
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h.Len *= 2
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h.Cap *= 2
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bs := *(*[]byte)(unsafe.Pointer(h))
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runtime.KeepAlive(indices)
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is = js.Global().Get("Uint8Array").New(len(bs))
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js.CopyBytesToJS(is, bs)
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}
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g.binding.Call("SetVertices", vs, is)
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}
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func (g *Game) Draw(indexLen int, indexOffset int, mode driver.CompositeMode, colorM *affine.ColorM, filter driver.Filter, address driver.Address) {
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// TODO: Implement this
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g.binding.Call("Draw", indexLen, indexOffset)
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}
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func (g *Game) ResetDestination(viewportWidth, viewportHeight int) {
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g.binding.Call("SetDestination", nil, viewportWidth, viewportHeight)
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}
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type RenderTarget2D struct {
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v js.Value
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binding js.Value
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}
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func (r *RenderTarget2D) Dispose() {
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runtime.SetFinalizer(r, nil)
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r.v.Call("Dispose")
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}
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func (r *RenderTarget2D) ReplacePixels(args []*driver.ReplacePixelsArgs) {
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for _, a := range args {
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arr := js.Global().Get("Uint8Array").New(len(a.Pixels))
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js.CopyBytesToJS(arr, a.Pixels)
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r.binding.Call("ReplacePixels", r.v, arr, a.X, a.Y, a.Width, a.Height)
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}
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}
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func (r *RenderTarget2D) SetAsDestination(viewportWidth, viewportHeight int) {
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r.binding.Call("SetDestination", r.v, viewportWidth, viewportHeight)
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}
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func (r *RenderTarget2D) SetAsSource() {
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r.binding.Call("SetSource", r.v)
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}
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