77 lines
1.4 KiB
Go
77 lines
1.4 KiB
Go
package platform
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import (
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"github.com/FooSoft/lazarus/math"
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"github.com/veandco/go-sdl2/sdl"
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)
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type Window interface {
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Destroy() error
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}
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type window struct {
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sdlWindow *sdl.Window
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sdlGlContext sdl.GLContext
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sdlRenderer *sdl.Renderer
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scene Scene
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}
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func newWindow(title string, width, height int, scene Scene) (*window, error) {
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sdlWindow, err := sdl.CreateWindow(
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title,
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sdl.WINDOWPOS_CENTERED,
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sdl.WINDOWPOS_CENTERED,
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int32(width),
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int32(height),
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sdl.WINDOW_OPENGL,
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)
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if err != nil {
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return nil, err
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}
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sdlGlContext, err := sdlWindow.GLCreateContext()
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if err != nil {
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sdlWindow.Destroy()
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return nil, err
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}
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sdlRenderer, err := sdl.CreateRenderer(sdlWindow, -1, sdl.RENDERER_ACCELERATED)
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if err != nil {
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sdlWindow.Destroy()
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return nil, err
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}
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return &window{sdlWindow, sdlGlContext, sdlRenderer, scene}, nil
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}
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func (w *window) Destroy() error {
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if w.sdlWindow != nil {
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if err := w.sdlWindow.Destroy(); err != nil {
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return err
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}
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}
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w.sdlGlContext = nil
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w.sdlWindow = nil
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return nil
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}
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func (w *window) advance() {
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w.scene.Advance()
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}
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func (w *window) render() {
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w.sdlWindow.GLMakeCurrent(w.sdlGlContext)
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}
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func (w *window) displaySize() math.Vec2i {
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width, height := w.sdlWindow.GetSize()
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return math.Vec2i{X: int(width), Y: int(height)}
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}
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func (w *window) bufferSize() math.Vec2i {
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width, height := w.sdlWindow.GLGetDrawableSize()
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return math.Vec2i{X: int(width), Y: int(height)}
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}
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