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
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
|
package main
import (
"fmt"
"github.com/kch42/gomcmap/mcmap"
"github.com/mattn/go-gtk/gdk"
"github.com/mattn/go-gtk/glib"
"github.com/mattn/go-gtk/gtk"
"math"
"unsafe"
)
const (
zoom = 2
tileSize = zoom * mcmap.ChunkSizeXZ
halfChunkSize = mcmap.ChunkSizeXZ / 2
)
type tileCmd int
const (
cmdUpdateTiles tileCmd = iota
cmdFlushTiles
cmdSave
)
func renderTile(chunk *mcmap.Chunk) (maptile, biotile *gdk.Pixmap, biocache []mcmap.Biome) {
maptile = emptyPixmap(tileSize, tileSize, 24)
mtDrawable := maptile.GetDrawable()
mtGC := gdk.NewGC(mtDrawable)
biotile = emptyPixmap(tileSize, tileSize, 24)
btDrawable := biotile.GetDrawable()
btGC := gdk.NewGC(btDrawable)
biocache = make([]mcmap.Biome, mcmap.ChunkRectXZ)
i := 0
for z := 0; z < mcmap.ChunkSizeXZ; z++ {
scanX:
for x := 0; x < mcmap.ChunkSizeXZ; x++ {
bio := chunk.Biome(x, z)
btGC.SetRgbFgColor(bioColors[bio])
btDrawable.DrawRectangle(btGC, true, x*zoom, z*zoom, zoom, zoom)
biocache[i] = bio
i++
for y := chunk.Height(x, z); y >= 0; y-- {
if col, ok := blockColors[chunk.Block(x, y, z).ID]; ok {
mtGC.SetRgbFgColor(col)
mtDrawable.DrawRectangle(mtGC, true, x*zoom, z*zoom, zoom, zoom)
continue scanX
}
}
mtGC.SetRgbFgColor(gdk.NewColor("#ffffff"))
mtDrawable.DrawRectangle(mtGC, true, x*zoom, z*zoom, zoom, zoom)
}
}
return
}
type MapWidget struct {
dArea *gtk.DrawingArea
w, h int
reportFail func(msg string)
updateInfo func(x, z int, bio mcmap.Biome)
isInit bool
showBiomes bool
offX, offZ int
mx1, mx2, my1, my2 int
pixmap *gdk.Pixmap
pixmapGC *gdk.GC
gdkwin *gdk.Window
bg *gdk.Pixmap
region *mcmap.Region
maptiles map[XZPos]*gdk.Pixmap
biotiles map[XZPos]*gdk.Pixmap
bioCache map[XZPos][]mcmap.Biome
redraw chan bool
tileCmds chan tileCmd
tool Tool
}
var (
checker1 = gdk.NewColor("#222222")
checker2 = gdk.NewColor("#444444")
)
func emptyPixmap(w, h, depth int) *gdk.Pixmap {
return gdk.NewPixmap(new(gdk.Drawable), w, h, depth)
}
func (mw *MapWidget) SetShowBiomes(b bool) {
mw.showBiomes = b
mw.redraw <- true
}
func (mw *MapWidget) SetTool(t Tool) {
mw.tool = t
}
func (mw *MapWidget) DArea() *gtk.DrawingArea { return mw.dArea }
func (mw *MapWidget) doTileCmds() {
for cmd := range mw.tileCmds {
switch cmd {
case cmdSave:
mw.region.Save()
case cmdFlushTiles:
gdk.ThreadsEnter()
for _, mt := range mw.maptiles {
mt.Unref()
}
for _, bt := range mw.biotiles {
bt.Unref()
}
gdk.ThreadsLeave()
mw.maptiles = make(map[XZPos]*gdk.Pixmap)
mw.biotiles = make(map[XZPos]*gdk.Pixmap)
mw.bioCache = make(map[XZPos][]mcmap.Biome)
case cmdUpdateTiles:
todelete := make(map[XZPos]bool)
startX := int(math.Floor(float64(mw.offX) / tileSize))
startZ := int(math.Floor(float64(mw.offZ) / tileSize))
endX := int(math.Ceil(float64(mw.offX+mw.w) / tileSize))
endZ := int(math.Ceil(float64(mw.offZ+mw.h) / tileSize))
for pos := range mw.maptiles {
if (pos.X < startX) || (pos.Z < startZ) || (pos.X >= endX) || (pos.Z >= endZ) {
todelete[pos] = true
}
}
gdk.ThreadsEnter()
for pos := range todelete {
if tile, ok := mw.maptiles[pos]; ok {
tile.Unref()
delete(mw.maptiles, pos)
}
if tile, ok := mw.biotiles[pos]; ok {
tile.Unref()
delete(mw.biotiles, pos)
}
if _, ok := mw.bioCache[pos]; ok {
delete(mw.bioCache, pos)
}
}
if mw.region != nil {
for z := startZ; z < endZ; z++ {
scanX:
for x := startX; x < endX; x++ {
pos := XZPos{x, z}
if _, ok := mw.biotiles[pos]; ok {
continue scanX
}
chunk, err := mw.region.Chunk(x, z)
switch err {
case nil:
case mcmap.NotAvailable:
continue scanX
default:
mw.reportFail(fmt.Sprintf("Could not get chunk %d, %d: %s", x, z, err))
return
}
mw.maptiles[pos], mw.biotiles[pos], mw.bioCache[pos] = renderTile(chunk)
chunk.MarkUnused()
gdk.ThreadsLeave()
mw.redraw <- true
gdk.ThreadsEnter()
}
}
}
gdk.ThreadsLeave()
}
}
}
func (mw *MapWidget) configure() {
if mw.pixmap != nil {
mw.pixmap.Unref()
}
alloc := mw.dArea.GetAllocation()
mw.w = alloc.Width
mw.h = alloc.Height
if !mw.isInit {
mw.offX = -(mw.w / 2)
mw.offZ = -(mw.h / 2)
mw.isInit = true
}
mw.pixmap = gdk.NewPixmap(mw.dArea.GetWindow().GetDrawable(), mw.w, mw.h, 24)
mw.pixmapGC = gdk.NewGC(mw.pixmap.GetDrawable())
mw.drawBg()
gdk.ThreadsLeave()
mw.redraw <- true
gdk.ThreadsEnter()
}
func (mw *MapWidget) drawBg() {
if mw.bg != nil {
mw.bg.Unref()
}
mw.bg = emptyPixmap(mw.w, mw.h, 24)
drawable := mw.bg.GetDrawable()
gc := gdk.NewGC(drawable)
w := int(math.Ceil(float64(mw.w) / 32))
h := int(math.Ceil(float64(mw.h) / 32))
for y := 0; y < h; y++ {
for x := 0; x < w; x++ {
if (x % 2) == (y % 2) {
gc.SetRgbFgColor(checker1)
} else {
gc.SetRgbFgColor(checker2)
}
drawable.DrawRectangle(gc, true, x*32, y*32, 32, 32)
}
}
}
func (mw *MapWidget) compose() {
drawable := mw.pixmap.GetDrawable()
gc := mw.pixmapGC
drawable.DrawDrawable(gc, mw.bg.GetDrawable(), 0, 0, 0, 0, -1, -1)
var tiles map[XZPos]*gdk.Pixmap
if mw.showBiomes {
tiles = mw.biotiles
} else {
tiles = mw.maptiles
}
for pos, tile := range tiles {
x := (pos.X * tileSize) - mw.offX
y := (pos.Z * tileSize) - mw.offZ
drawable.DrawDrawable(gc, tile.GetDrawable(), 0, 0, x, y, tileSize, tileSize)
}
}
func (mw *MapWidget) movement(ctx *glib.CallbackContext) {
if mw.gdkwin == nil {
mw.gdkwin = mw.dArea.GetWindow()
}
arg := ctx.Args(0)
mev := *(**gdk.EventMotion)(unsafe.Pointer(&arg))
var mt gdk.ModifierType
if mev.IsHint != 0 {
mw.gdkwin.GetPointer(&(mw.mx2), &(mw.my2), &mt)
} else {
mw.mx2, mw.my2 = int(mev.X), int(mev.Y)
}
x := (mw.offX + mw.mx2) / zoom
z := (mw.offZ + mw.my2) / zoom
cx, cz, cbx, cbz := mcmap.BlockToChunk(x, z)
bio := mcmap.Biome(mcmap.BioUncalculated)
if bc, ok := mw.bioCache[XZPos{cx, cz}]; ok {
bio = bc[cbz*mcmap.ChunkSizeXZ+cbx]
}
mw.updateInfo(x, z, bio)
switch {
case mt&gdk.BUTTON1_MASK != 0:
case mt&gdk.BUTTON2_MASK != 0:
if (mw.mx1 != -1) && (mw.my1 != -1) {
mw.offX += mw.mx1 - mw.mx2
mw.offZ += mw.my1 - mw.my2
gdk.ThreadsLeave()
mw.tileCmds <- cmdUpdateTiles
gdk.ThreadsEnter()
}
}
mw.mx1, mw.my1 = mw.mx2, mw.my2
}
func (mw *MapWidget) expose() {
mw.dArea.GetWindow().GetDrawable().DrawDrawable(mw.pixmapGC, mw.pixmap.GetDrawable(), 0, 0, 0, 0, -1, -1)
}
func (mw *MapWidget) guiUpdater() {
for _ = range mw.redraw {
gdk.ThreadsEnter()
mw.compose()
mw.expose()
mw.dArea.GetWindow().Invalidate(nil, false)
gdk.ThreadsLeave()
}
}
func (mw *MapWidget) init() {
mw.redraw = make(chan bool)
mw.tileCmds = make(chan tileCmd)
mw.maptiles = make(map[XZPos]*gdk.Pixmap)
mw.biotiles = make(map[XZPos]*gdk.Pixmap)
mw.bioCache = make(map[XZPos][]mcmap.Biome)
mw.showBiomes = true
mw.mx1, mw.my1 = -1, -1
go mw.doTileCmds()
go mw.guiUpdater()
mw.dArea = gtk.NewDrawingArea()
mw.dArea.Connect("configure-event", mw.configure)
mw.dArea.Connect("expose-event", mw.expose)
mw.dArea.Connect("motion-notify-event", mw.movement)
mw.dArea.SetEvents(int(gdk.POINTER_MOTION_MASK | gdk.POINTER_MOTION_HINT_MASK | gdk.BUTTON_PRESS_MASK))
}
func (mw *MapWidget) setRegion(region *mcmap.Region) {
mw.tileCmds <- cmdFlushTiles
mw.region = region
mw.tileCmds <- cmdUpdateTiles
}
func (mw *MapWidget) GetBiome(x, z int) (mcmap.Biome, bool) {
cx, cz, bx, bz := mcmap.BlockToChunk(x, z)
pos := XZPos{cx, cz}
if bc, ok := mw.bioCache[pos]; ok {
return bc[bz*mcmap.ChunkSizeXZ+bx], true
}
chunk, err := mw.region.Chunk(x, z)
switch err {
case nil:
case mcmap.NotAvailable:
return mcmap.BioUncalculated, false
default:
mw.reportFail(fmt.Sprintf("Error while getting chunk %d, %d: %s", cx, cz, err))
return mcmap.BioUncalculated, false
}
defer chunk.MarkUnused()
bc := make([]mcmap.Biome, mcmap.ChunkRectXZ)
i := 0
for z := 0; z < mcmap.ChunkSizeXZ; z++ {
for x := 0; x < mcmap.ChunkSizeXZ; x++ {
bc[i] = chunk.Biome(x, z)
i++
}
}
mw.bioCache[pos] = bc
return chunk.Biome(bx, bz), true
}
func (mw *MapWidget) SetBiome(x, z int, bio mcmap.Biome) {
cx, cz, bx, bz := mcmap.BlockToChunk(x, z)
pos := XZPos{cx, cz}
// Update cache
if bc, ok := mw.bioCache[pos]; ok {
bc[bz*mcmap.ChunkSizeXZ+bx] = bio
}
chunk, err := mw.region.Chunk(x, z)
switch err {
case nil:
case mcmap.NotAvailable:
return
default:
mw.reportFail(fmt.Sprintf("Error while getting chunk %d, %d: %s", cx, cz, err))
return
}
defer chunk.MarkUnused()
chunk.SetBiome(bx, bz, bio)
}
func NewMapWidget(reportFail func(msg string), updateInfo func(x, z int, bio mcmap.Biome)) *MapWidget {
mw := &MapWidget{reportFail: reportFail, updateInfo: updateInfo}
mw.init()
return mw
}
|