/
render.go
85 lines (65 loc) · 1.82 KB
/
render.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
// author: Jacky Boen
package main
import (
"fmt"
"os"
"github.com/veandco/go-sdl2/sdl"
)
var winTitle string = "Go-SDL2 Render"
var winWidth, winHeight int32 = 800, 600
func run() int {
var window *sdl.Window
var renderer *sdl.Renderer
var points []sdl.Point
var rect sdl.Rect
var rects []sdl.Rect
window, err := sdl.CreateWindow(winTitle, sdl.WINDOWPOS_UNDEFINED, sdl.WINDOWPOS_UNDEFINED,
winWidth, winHeight, sdl.WINDOW_SHOWN)
if err != nil {
fmt.Fprintf(os.Stderr, "Failed to create window: %s\n", err)
return 1
}
defer window.Destroy()
renderer, err = sdl.CreateRenderer(window, -1, sdl.RENDERER_ACCELERATED)
if err != nil {
fmt.Fprintf(os.Stderr, "Failed to create renderer: %s\n", err)
return 2
}
defer renderer.Destroy()
running := true
for running {
for event := sdl.PollEvent(); event != nil; event = sdl.PollEvent() {
switch event.(type) {
case sdl.QuitEvent:
running = false
}
}
renderer.SetDrawColor(0, 0, 0, 255)
renderer.Clear()
renderer.SetDrawColor(255, 255, 255, 255)
renderer.DrawPoint(150, 300)
renderer.SetDrawColor(0, 0, 255, 255)
renderer.DrawLine(0, 0, 200, 200)
points = []sdl.Point{{0, 0}, {100, 300}, {100, 300}, {200, 0}}
renderer.SetDrawColor(255, 255, 0, 255)
renderer.DrawLines(points)
rect = sdl.Rect{300, 0, 200, 200}
renderer.SetDrawColor(255, 0, 0, 255)
renderer.DrawRect(&rect)
rects = []sdl.Rect{{400, 400, 100, 100}, {550, 350, 200, 200}}
renderer.SetDrawColor(0, 255, 255, 255)
renderer.DrawRects(rects)
rect = sdl.Rect{250, 250, 200, 200}
renderer.SetDrawColor(0, 255, 0, 255)
renderer.FillRect(&rect)
rects = []sdl.Rect{{500, 300, 100, 100}, {200, 300, 200, 200}}
renderer.SetDrawColor(255, 0, 255, 255)
renderer.FillRects(rects)
renderer.Present()
sdl.Delay(16)
}
return 0
}
func main() {
os.Exit(run())
}