go-sdl-pong

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package base
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import "unsafe"
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type Screen struct {
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	buffer []byte
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	Width  int
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	Height int
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}
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func NewScreen(width, height int) *Screen {
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	return &Screen{
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		buffer: make([]byte, width*height*4),
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		Width:  width,
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		Height: height,
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	}
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}
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func (s *Screen) SetPixel(x, y int, color Color) {
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	index := (y*int(s.Width) + x) * 4
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	if index > s.Width*s.Height*4-4 || index < 0 {
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		return
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	}
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	s.buffer[index+3] = color.R
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	s.buffer[index+2] = color.G
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	s.buffer[index+1] = color.B
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}
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func (s *Screen) UnsafePointer() unsafe.Pointer {
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	return unsafe.Pointer(&s.buffer[0])
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}
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func (s *Screen) Clear() {
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	for i := range s.buffer {
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		s.buffer[i] = 0
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	}
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}
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