75 lines
1.6 KiB
Go
75 lines
1.6 KiB
Go
// author: Jacky Boen
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package main
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import (
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"fmt"
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"os"
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"github.com/veandco/go-sdl2/sdl"
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)
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var winTitle string = "Go-SDL2 Render"
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var winWidth, winHeight int32 = 800, 600
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func run() int {
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var window *sdl.Window
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var renderer *sdl.Renderer
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var points []sdl.Point
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var rect sdl.Rect
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var rects []sdl.Rect
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window, err := sdl.CreateWindow(winTitle, sdl.WINDOWPOS_UNDEFINED, sdl.WINDOWPOS_UNDEFINED,
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winWidth, winHeight, sdl.WINDOW_SHOWN)
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if err != nil {
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fmt.Fprintf(os.Stderr, "Failed to create window: %s\n", err)
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return 1
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}
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defer window.Destroy()
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renderer, err = sdl.CreateRenderer(window, -1, sdl.RENDERER_ACCELERATED)
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if err != nil {
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fmt.Fprintf(os.Stderr, "Failed to create renderer: %s\n", err)
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return 2
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}
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defer renderer.Destroy()
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renderer.Clear()
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renderer.SetDrawColor(255, 255, 255, 255)
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renderer.DrawPoint(150, 300)
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renderer.SetDrawColor(0, 0, 255, 255)
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renderer.DrawLine(0, 0, 200, 200)
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points = []sdl.Point{{0, 0}, {100, 300}, {100, 300}, {200, 0}}
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renderer.SetDrawColor(255, 255, 0, 255)
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renderer.DrawLines(points)
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rect = sdl.Rect{300, 0, 200, 200}
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renderer.SetDrawColor(255, 0, 0, 255)
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renderer.DrawRect(&rect)
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rects = []sdl.Rect{{400, 400, 100, 100}, {550, 350, 200, 200}}
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renderer.SetDrawColor(0, 255, 255, 255)
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renderer.DrawRects(rects)
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rect = sdl.Rect{250, 250, 200, 200}
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renderer.SetDrawColor(0, 255, 0, 255)
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renderer.FillRect(&rect)
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rects = []sdl.Rect{{500, 300, 100, 100}, {200, 300, 200, 200}}
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renderer.SetDrawColor(255, 0, 255, 255)
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renderer.FillRects(rects)
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renderer.Present()
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sdl.PollEvent()
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sdl.Delay(2000)
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return 0
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}
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func main() {
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os.Exit(run())
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}
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