To get this branch, use:
bzr branch
http://9ix.org/bzr/ld27
« back to all changes in this revision
Viewing changes to zoetrope/core/group.lua
- browse files at revision 36
- compare with another revision
- download diff
- download tarball
- view history from revision 36
- Committer: Josh C
- Date: 2014-07-03 14:42:45 UTC
- Revision ID: josh@9ix.org-20140703144245-zsf2q3in0zb1drvo
changes for love 0.9
- files added:
- data/Explosion2.wav
- zoetrope/debug
- files removed:
- zoetrope/LICENSE
- files modified:
- Info.plist
added
removed
zoetrope/core/group.lua
8
8
-- Event: onUpdate
9
9
-- Called once each frame, with the elapsed time since the last frame in seconds.
10
10
--
11
-- Event: onStartFrame
11
12
-- Called once each frame like onUpdate, but guaranteed to fire before any others' onUpdate handlers.
12
13
--
13
14
-- Event: onEndFrame
31
31
solid = true,
32
32
33
33
-- Property: sprites
34
-- A table of member sprites, in drawing order.
34
-- A table of member sprites, in drawing order. You can iterate over this
35
-- table with <members()>.
35
36
sprites = {},
36
37
37
38
-- Property: timeScale
42
43
-- This table's x and y properties shift member sprites' positions when drawn.
43
44
-- To draw sprites at their normal position, set both x and y to 0.
44
45
translate = { x = 0, y = 0 },
45
46
46
47
-- Property: translateScale
47
48
-- This table's x and y properties multiply member sprites'
48
49
-- positions, which you can use to simulate parallax scrolling. To draw
49
50
-- sprites at their normal position, set both x and y to 1.
50
51
translateScale = { x = 1, y = 1 },
51
52
53
-- Property: scale
54
-- Zooms in or out all drawing operations in the group, centering them with
55
-- respect to the <origin> property.
56
scale = 1,
57
58
-- Property: distort
59
-- Distorts the group's scale, similar to <Sprite.distort>.
60
distort = { x = 1, y = 1 },
61
62
-- Property: origin
63
-- Sets the center point for all scaling operations.
64
origin = { x = 0, y = 0 },
65
52
66
-- Method: add
53
67
-- Adds a sprite to the group.
54
68
--
56
70
-- sprite - <Sprite> to add
57
71
--
58
72
-- Returns:
59
-- nothing
73
-- the sprite added, so you can write things like
74
-- self.player = self:add(Player:new())
60
75
61
76
add = function (self, sprite)
62
77
assert(sprite, 'asked to add nil to a group')
63
78
assert(sprite ~= self, "can't add a group to itself")
64
79
65
80
if STRICT and self:contains(sprite) then
66
81
local info = debug.getinfo(2, 'Sl')
67
82
print('Warning: adding a sprite to a group it already belongs to (' ..
69
84
end
70
85
71
86
table.insert(self.sprites, sprite)
87
return sprite
72
88
end,
73
89
74
90
-- Method: remove
75
91
-- Removes a sprite from the group. If the sprite is
76
92
-- not in the group, this does nothing.
77
--
93
--
78
94
-- Arguments:
79
95
-- sprite - <Sprite> to remove
80
--
96
--
81
97
-- Returns:
82
98
-- nothing
83
99
84
100
remove = function (self, sprite)
85
for i, spr in ipairs(self.sprites) do
101
for i, spr in self:members() do
86
102
if spr == sprite then
87
103
table.remove(self.sprites, i)
88
104
return
89
105
end
90
106
end
91
107
92
108
if STRICT then
93
109
local info = debug.getinfo(2, 'Sl')
94
110
print('Warning: asked to remove a sprite from a group it was not a member of (' ..
107
123
-- nothing
108
124
109
125
moveToFront = function (self, sprite)
110
for i, spr in ipairs(self.sprites) do
126
for i, spr in self:members() do
111
127
if spr == sprite then
112
128
table.remove(self.sprites, i)
113
129
table.insert(self.sprites, sprite)
129
145
--
130
146
-- Returns:
131
147
-- nothing
132
148
133
149
moveToBack = function (self, sprite)
134
for i, spr in ipairs(self.sprites) do
150
for i, spr in self:members() do
135
151
if spr == sprite then
136
152
table.remove(self.sprites, i)
137
153
table.insert(self.sprites, 1, sprite)
158
174
table.sort(self.sprites, func)
159
175
end,
160
176
177
-- Method: members
178
-- A convenience method that iterates over all member sprites.
179
--
180
-- Arguments:
181
-- none
182
--
183
-- Returns:
184
-- order, sprite
185
186
members = function (self)
187
return ipairs(self.sprites)
188
end,
189
161
190
-- Method: collide
162
191
-- Collides all solid sprites in the group with another sprite or group.
163
192
-- This calls the <Sprite.onCollide> event handlers on all sprites that
169
198
-- Arguments:
170
199
-- ... - any number of <Sprite>s or <Group>s to collide with. If none
171
200
-- are specified, the group collides with itself.
172
--
201
--
173
202
-- Returns:
174
203
-- nothing
175
204
--
215
244
setEffect = function (self, filename, effectType)
216
245
effectType = effectType or 'screen'
217
246
218
if love.graphics.isSupported('pixeleffect') and
247
if love.graphics.isSupported('shader') and
219
248
(effectType == 'sprite' or love.graphics.isSupported('canvas'))then
220
249
if filename then
221
self.effect = love.graphics.newPixelEffect(Cached:text(filename))
250
self.effect = love.graphics.newShader(Cached:text(filename))
222
251
self.effectType = effectType
223
252
else
224
253
self.effect = nil
232
261
233
262
-- Method: count
234
263
-- Counts how many sprites are in this group.
235
--
264
--
236
265
-- Arguments:
237
266
-- subgroups - include subgroups?
238
--
267
--
239
268
-- Returns:
240
269
-- integer count
241
270
243
272
if subgroups then
244
273
local count = 0
245
274
246
for _, spr in pairs(self.sprites) do
275
for _, spr in self:members() do
247
276
if spr:instanceOf(Group) then
248
277
count = count + spr:count(true)
249
278
else
302
331
contains = function (self, sprite, recurse)
303
332
if recurse ~= false then recurse = true end
304
333
305
for _, spr in pairs(self.sprites) do
334
for _, spr in self:members() do
306
335
if spr == sprite then return true end
307
336
308
337
if recurse and spr:instanceOf(Group) and spr:contains(sprite) then
331
360
-- Returns:
332
361
-- nothing
333
362
334
loadLayers = function (self, file, tileClass)
335
local ok, data = pcall(loadstring(Cached:text(file)))
336
local _, _, directory = string.find(file, '^(.*[/\\])')
337
directory = directory or ''
338
339
if ok then
340
-- store tile properties by gid
341
342
local tileProtos = {}
343
344
for _, tileset in pairs(data.tilesets) do
345
for _, tile in pairs(tileset.tiles) do
346
local id = tileset.firstgid + tile.id
347
348
for key, value in pairs(tile.properties) do
349
tile.properties[key] = tovalue(value)
350
end
351
352
tileProtos[id] = tile
353
tileProtos[id].width = tileset.tilewidth
354
tileProtos[id].height = tileset.tileheight
355
end
356
end
357
358
for _, layer in pairs(data.layers) do
359
if self.prototype[layer.name] then
360
error('The class you are loading layers into reserves the ' .. layer.name .. ' property for its own use; you cannot load a layer with that name')
361
end
362
363
if STRICT and self[layer.name] then
364
local info = debug.getinfo(2, 'Sl')
365
print('Warning: a property named ' .. layer.name .. ' already exists in this group (' ..
366
info.short_src .. ', line ' .. info.currentline .. ')')
367
end
368
369
if layer.type == 'tilelayer' then
370
local map = Map:new{ spriteWidth = data.tilewidth, spriteHeight = data.tileheight }
371
map:empty(layer.width, layer.height)
372
373
-- load tiles
374
375
for _, tiles in pairs(data.tilesets) do
376
map:loadTiles(directory .. tiles.image, tileClass or Tile, tiles.firstgid)
377
378
-- and mix in properties where applicable
379
380
for id, tile in pairs(tileProtos) do
381
if map.sprites[id] then
382
map.sprites[id]:mixin(tile.properties)
383
end
384
end
385
end
386
387
-- load tile data
388
389
local x = 1
390
local y = 1
391
392
for _, val in ipairs(layer.data) do
393
map.map[x][y] = val
394
x = x + 1
395
396
if x > layer.width then
397
x = 1
398
y = y + 1
399
end
400
end
401
402
self[layer.name] = map
403
self:add(map)
404
elseif layer.type == 'objectgroup' then
405
local group = Group:new()
406
407
for _, obj in pairs(layer.objects) do
408
-- roll in tile properties if based on a tile
409
410
if obj.gid and tileProtos[obj.gid] then
411
local tile = tileProtos[obj.gid]
412
413
obj.name = tile.properties.name
414
obj.width = tile.width
415
obj.height = tile.height
416
417
for key, value in pairs(tile.properties) do
418
obj.properties[key] = tovalue(value)
419
end
420
421
-- Tiled tile-based objects measure their y
422
-- position at their lower-left corner, instead
423
-- of their upper-left corner as usual
424
425
obj.y = obj.y - obj.height
426
end
427
428
-- create a new object if the class does exist
429
430
local spr
431
432
if _G[obj.name] then
433
obj.properties.x = obj.x
434
obj.properties.y = obj.y
435
obj.properties.width = obj.width
436
obj.properties.height = obj.height
437
438
spr = _G[obj.name]:new(obj.properties)
439
else
440
spr = Fill:new{ x = obj.x, y = obj.y, width = obj.width, height = obj.height, fill = { 128, 128, 128 } }
441
end
442
443
if obj.properties._the then
444
the[obj.properties._the] = spr
445
end
446
447
group:add(spr)
448
end
449
450
self[layer.name] = group
451
self:add(group)
452
else
453
error("don't know how to create a " .. layer.type .. " layer from file data")
454
end
455
end
456
else
457
error('could not load layers from file: ' .. data)
458
end
459
end,
363
loadLayers = function (self, file, tileClass)
364
local ok, data = pcall(loadstring(Cached:text(file)))
365
local _, _, directory = string.find(file, '^(.*[/\\])')
366
directory = directory or ''
367
368
if ok then
369
-- store tile properties by gid
370
371
local tileProtos = {}
372
373
for _, tileset in pairs(data.tilesets) do
374
for _, tile in pairs(tileset.tiles) do
375
local id = tileset.firstgid + tile.id
376
377
for key, value in pairs(tile.properties) do
378
tile.properties[key] = tovalue(value)
379
end
380
381
tileProtos[id] = tile
382
tileProtos[id].width = tileset.tilewidth
383
tileProtos[id].height = tileset.tileheight
384
end
385
end
386
387
for _, layer in pairs(data.layers) do
388
if self.prototype[layer.name] then
389
error('The class you are loading layers into reserves the ' .. layer.name .. ' property for its own use; you cannot load a layer with that name')
390
end
391
392
if STRICT and self[layer.name] then
393
local info = debug.getinfo(2, 'Sl')
394
print('Warning: a property named ' .. layer.name .. ' already exists in this group (' ..
395
info.short_src .. ', line ' .. info.currentline .. ')')
396
end
397
398
if layer.type == 'tilelayer' then
399
local map = Map:new{ spriteWidth = data.tilewidth, spriteHeight = data.tileheight }
400
map:empty(layer.width, layer.height)
401
402
-- load tiles
403
404
for _, tiles in pairs(data.tilesets) do
405
map:loadTiles(directory .. tiles.image, tileClass or Tile, tiles.firstgid)
406
407
-- and mix in properties where applicable
408
409
for id, tile in pairs(tileProtos) do
410
if map.sprites[id] then
411
map.sprites[id]:mixin(tile.properties)
412
end
413
end
414
end
415
416
-- load tile data
417
418
local x = 1
419
local y = 1
420
421
for _, val in ipairs(layer.data) do
422
map.map[x][y] = val
423
x = x + 1
424
425
if x > layer.width then
426
x = 1
427
y = y + 1
428
end
429
end
430
431
self[layer.name] = map
432
self:add(map)
433
elseif layer.type == 'objectgroup' then
434
local group = Group:new()
435
436
for _, obj in pairs(layer.objects) do
437
-- roll in tile properties if based on a tile
438
439
if obj.gid and tileProtos[obj.gid] then
440
local tile = tileProtos[obj.gid]
441
442
obj.name = tile.properties.name
443
obj.width = tile.width
444
obj.height = tile.height
445
446
for key, value in pairs(tile.properties) do
447
obj.properties[key] = tovalue(value)
448
end
449
450
-- Tiled tile-based objects measure their y
451
-- position at their lower-left corner, instead
452
-- of their upper-left corner as usual
453
454
obj.y = obj.y - obj.height
455
end
456
457
-- create a new object if the class does exist
458
459
local spr
460
461
if _G[obj.name] then
462
obj.properties.x = obj.x
463
obj.properties.y = obj.y
464
obj.properties.width = obj.width
465
obj.properties.height = obj.height
466
467
spr = _G[obj.name]:new(obj.properties)
468
else
469
spr = Fill:new{ x = obj.x, y = obj.y, width = obj.width, height = obj.height, fill = { 128, 128, 128 } }
470
end
471
472
if obj.properties._the then
473
the[obj.properties._the] = spr
474
end
475
476
group:add(spr)
477
end
478
479
self[layer.name] = group
480
self:add(group)
481
else
482
error("don't know how to create a " .. layer.type .. " layer from file data")
483
end
484
end
485
else
486
error('could not load layers from file: ' .. data)
487
end
488
end,
489
460
490
461
491
-- passes startFrame events to member sprites
462
492
463
493
startFrame = function (self, elapsed)
464
494
if not self.active then return end
465
495
elapsed = elapsed * self.timeScale
466
467
for _, spr in pairs(self.sprites) do
496
497
for _, spr in self:members() do
468
498
if spr.active then spr:startFrame(elapsed) end
469
499
end
470
500
477
507
if not self.active then return end
478
508
elapsed = elapsed * self.timeScale
479
509
480
for _, spr in pairs(self.sprites) do
510
for _, spr in self:members() do
481
511
if spr.active then spr:update(elapsed) end
482
512
end
483
513
490
520
if not self.active then return end
491
521
elapsed = elapsed * self.timeScale
492
522
493
for _, spr in pairs(self.sprites) do
523
for _, spr in self:members() do
494
524
if spr.active then spr:endFrame(elapsed) end
495
525
end
496
526
508
538
if not self.visible then return end
509
539
x = x or self.translate.x
510
540
y = y or self.translate.y
511
541
512
542
local scrollX = x * self.translateScale.x
513
543
local scrollY = y * self.translateScale.y
514
544
local appWidth = the.app.width
515
545
local appHeight = the.app.height
546
local scaled = self.scale ~= 1 or self.distort.x ~= 1 or self.distort.y ~= 1
516
547
517
548
if self.effect then
518
549
if self.effectType == 'screen' then
520
551
self._canvas:clear()
521
552
love.graphics.setCanvas(self._canvas)
522
553
elseif self.effectType == 'sprite' then
523
love.graphics.setPixelEffect(self.effect)
554
love.graphics.setShader(self.effect)
524
555
end
525
556
end
526
527
for _, spr in pairs(self.sprites) do
557
558
if scaled then
559
local scaleX = self.scale * self.distort.x
560
local scaleY = self.scale * self.distort.y
561
562
love.graphics.push()
563
love.graphics.translate(self.origin.x, self.origin.y)
564
love.graphics.scale(scaleX, scaleY)
565
love.graphics.translate(- self.origin.x, - self.origin.y)
566
end
567
568
for _, spr in self:members() do
528
569
if spr.visible then
529
570
if spr.translate then
530
571
spr:draw(spr.translate.x + scrollX, spr.translate.y + scrollY)
541
582
end
542
583
end
543
584
end
544
585
586
if scaled then
587
love.graphics.pop()
588
end
589
545
590
if self.effect then
546
591
if self.effectType == 'screen' then
547
love.graphics.setPixelEffect(self.effect)
592
love.graphics.setShader(self.effect)
548
593
love.graphics.setCanvas()
549
594
love.graphics.draw(self._canvas)
550
595
end
551
596
552
love.graphics.setPixelEffect()
597
love.graphics.setShader()
553
598
end
554
599
end,
555
600
Loggerhead is a web-based interface for Breezy
Version: 2.0.1