/
main.go
209 lines (183 loc) · 4.32 KB
/
main.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
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
// Copyright (c) 2012 by Lecture Hall Games Authors.
// All source files are distributed under the Simplified BSD License.
package main
import (
"encoding/binary"
"fmt"
"github.com/0xe2-0x9a-0x9b/Go-SDL/mixer"
"github.com/0xe2-0x9a-0x9b/Go-SDL/sdl"
"github.com/0xe2-0x9a-0x9b/Go-SDL/ttf"
"github.com/banthar/gl"
"go/build"
"io"
"log"
"math"
"math/rand"
"net"
"os"
"runtime"
"sync"
"time"
)
const basePkg = "github.com/fruhwirth-marco/lecture-hall-games"
const numberLevels = 2
const numberCars = 1
type Player struct {
Conn net.Conn
Nick string
ButtonA bool
ButtonB bool
JoystickX float32
JoystickY float32
}
const (
screenWidth = 1024
screenHeight = 768
)
type Game interface {
Update(t time.Duration)
Render(screen *sdl.Surface)
Join(player *Player, x, y float32)
Leave(player *Player)
KeyPressed(input sdl.Keysym)
}
func (p *Player) Vibrate() {
binary.Write(p.Conn, binary.BigEndian, uint32(42))
}
func handleConnection(conn net.Conn) {
player := &Player{Conn: conn}
defer func() {
log.Printf("Player %q left (%s)\n", player.Nick, conn.RemoteAddr())
mu.Lock()
game.Leave(player)
mu.Unlock()
}()
var nickLength uint32
binary.Read(conn, binary.BigEndian, &nickLength)
nickBytes := make([]byte, nickLength)
if _, err := io.ReadFull(conn, nickBytes); err != nil {
log.Println(err)
return
}
player.Nick = string(nickBytes)
mu.Lock()
game.Join(player, 200, 200)
mu.Unlock()
log.Printf("Player %q joined (%s)\n", player.Nick, conn.RemoteAddr())
buf := make([]byte, 12)
for {
if _, err := io.ReadFull(conn, buf); err != nil {
if err != io.EOF {
log.Println(err)
}
return
}
mu.Lock()
player.JoystickX = math.Float32frombits(binary.BigEndian.Uint32(buf))
player.JoystickY = math.Float32frombits(binary.BigEndian.Uint32(buf[4:]))
buttons := binary.BigEndian.Uint32(buf[8:])
player.ButtonA = buttons&1 != 0
player.ButtonB = buttons&2 != 0
if player.JoystickX < -1 {
player.JoystickX = -1
} else if player.JoystickX > 1 {
player.JoystickX = 1
}
if player.JoystickY < -1 {
player.JoystickY = 1
} else if player.JoystickY > 1 {
player.JoystickY = 1
}
mu.Unlock()
}
}
var (
game Game
mu sync.Mutex
)
func main() {
runtime.LockOSThread()
if sdl.Init(sdl.INIT_EVERYTHING) != 0 {
log.Fatal(sdl.GetError())
}
var screen = sdl.SetVideoMode(screenWidth, screenHeight, 32, sdl.OPENGL|sdl.HWSURFACE|sdl.GL_DOUBLEBUFFER|sdl.FULLSCREEN)
if screen == nil {
log.Fatal(sdl.GetError())
}
sdl.WM_SetCaption("Lecture Hall Games", "")
sdl.EnableUNICODE(1)
if gl.Init() != 0 {
log.Fatal("could not initialize OpenGL")
}
gl.Viewport(0, 0, int(screen.W), int(screen.H))
gl.ClearColor(1, 1, 1, 0)
gl.Clear(gl.COLOR_BUFFER_BIT)
gl.MatrixMode(gl.PROJECTION)
gl.LoadIdentity()
gl.Ortho(0, float64(screen.W), float64(screen.H), 0, -1.0, 1.0)
gl.Disable(gl.LIGHTING)
gl.Disable(gl.DEPTH_TEST)
gl.TexEnvi(gl.TEXTURE_ENV, gl.TEXTURE_ENV_MODE, gl.MODULATE)
if mixer.OpenAudio(mixer.DEFAULT_FREQUENCY, mixer.DEFAULT_FORMAT,
mixer.DEFAULT_CHANNELS, 4096) != 0 {
log.Fatal(sdl.GetError())
}
if ttf.Init() != 0 {
log.Fatal(sdl.GetError())
}
if p, err := build.Default.Import(basePkg, "", build.FindOnly); err == nil {
os.Chdir(p.Dir)
}
var err error
rand.Seed(time.Now().UnixNano())
levelDir := fmt.Sprintf("data/levels/demolevel%d", 3+rand.Intn(numberLevels))
//carsDir := fmt.Sprintf(" data/cars/car%d/", 1+rand.Intn(numberCars))
if game, err = NewRacer(levelDir); err != nil {
log.Fatal(err)
}
go func() {
listen, err := net.Listen("tcp", ":8001")
if err != nil {
log.Fatal(err)
}
for {
conn, err := listen.Accept()
if err != nil {
log.Println(err)
continue
}
go handleConnection(conn)
}
}()
running := true
last := time.Now()
for running {
select {
case event := <-sdl.Events:
switch e := event.(type) {
case sdl.QuitEvent:
running = false
case sdl.ResizeEvent:
screen = sdl.SetVideoMode(int(e.W), int(e.H), 32, sdl.RESIZABLE)
case sdl.KeyboardEvent:
if e.Type == sdl.KEYDOWN {
if(e.Keysym.Sym == sdl.K_ESCAPE) {
running = false;
} else {
game.KeyPressed(e.Keysym)
}
}
}
default:
}
current := time.Now()
t := current.Sub(last)
last = current
mu.Lock()
game.Update(t)
game.Render(screen)
mu.Unlock()
sdl.GL_SwapBuffers()
}
sdl.Quit()
}