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Replacing image tables with arrays of images eliminates the memory leak

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Rezmason
2022-05-30 22:00:45 -07:00
parent 7fbb7a62e1
commit a48263873e
1 changed files with 12 additions and 31 deletions
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43
playdate/source/main.lua
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@@ -8,31 +8,25 @@ local numRows <const> = math.floor(screenHeight / glyphWidth)
local numCells <const> = numColumns * numRows local numCells <const> = numColumns * numRows
local numGlyphs <const> = 133 local numGlyphs <const> = 133
local glyphs = gfx.imagetable.new('images/matrix') local glyphTable = gfx.imagetable.new('images/matrix')
-- local glyphMap = gfx.tilemap.new() local glyphs = {}
-- glyphMap:setImageTable(glyphs) for i = 1, numGlyphs do
-- glyphMap:setSize(numColumns, numRows) glyphs[i] = glyphTable[i]
end
local ditherType = gfx.image.kDitherTypeAtkinson local ditherType = gfx.image.kDitherTypeAtkinson
local image = gfx.image.new(glyphWidth, glyphWidth, gfx.kColorBlack) local image = gfx.image.new(glyphWidth, glyphWidth, gfx.kColorBlack)
local numFades <const> = 15 local numFades <const> = 15
local fades = gfx.imagetable.new(numFades) local fades = {}
for i = 1, numFades do for i = 1, numFades do
fades:setImage(i, image:fadedImage(i / numFades, ditherType)) fades[i] = image:fadedImage(i / numFades, ditherType)
end end
-- local fadeMap = gfx.tilemap.new()
-- fadeMap:setImageTable(fades)
-- fadeMap:setSize(numColumns, numRows)
local minSpeed <const> = 0.15 local minSpeed <const> = 0.15
local maxSpeed <const> = 1 local maxSpeed <const> = 1
local time = 0 local time = 0
local speed = maxSpeed local speed = maxSpeed
function randomFloat()
return math.random(10000) / 10000
end
local sqrt2 <const> = math.sqrt(2) local sqrt2 <const> = math.sqrt(2)
local sqrt5 <const> = math.sqrt(5) local sqrt5 <const> = math.sqrt(5)
function wobble(x) function wobble(x)
@@ -41,20 +35,19 @@ end
local cells = {} local cells = {}
for x = 1, numColumns do for x = 1, numColumns do
local columnTimeOffset = randomFloat() * 1000 local columnTimeOffset = math.random() * 1000
local columnSpeedOffset = randomFloat() * 0.5 + 0.5 local columnSpeedOffset = math.random() * 0.5 + 0.5
for y = 1, numRows do for y = 1, numRows do
local cell = {} local cell = {}
cell.x = x cell.x = x
cell.y = y cell.y = y
cell.glyphCycle = randomFloat() cell.glyphCycle = math.random()
cell.columnTimeOffset = columnTimeOffset cell.columnTimeOffset = columnTimeOffset
cell.columnSpeedOffset = columnSpeedOffset cell.columnSpeedOffset = columnSpeedOffset
cell.glyphIndex = math.random(numGlyphs) + 1 cell.glyphIndex = math.floor(math.random() * numGlyphs) + 1
cell.fadeIndex = -1 cell.fadeIndex = -1
cells[#cells + 1] = cell cells[#cells + 1] = cell
-- glyphMap:setTileAtPosition(x, y, cell.glyphIndex)
end end
end end
@@ -73,8 +66,6 @@ function playdate.update()
playdate.resetElapsedTime() playdate.resetElapsedTime()
time += delta time += delta
-- local count = 0
for i = 1, numCells do for i = 1, numCells do
local mustDraw = false local mustDraw = false
local cell = cells[i] local cell = cells[i]
@@ -90,7 +81,7 @@ function playdate.update()
cell.glyphCycle = cell.glyphCycle + delta * 2 cell.glyphCycle = cell.glyphCycle + delta * 2
if cell.glyphCycle > 1 then if cell.glyphCycle > 1 then
cell.glyphCycle = cell.glyphCycle % 1 cell.glyphCycle = cell.glyphCycle % 1
local glyphIndex = (cell.glyphIndex + math.random(math.floor(numGlyphs / 2))) % numGlyphs + 1 local glyphIndex = (cell.glyphIndex + math.random(20)) % numGlyphs + 1
if cell.glyphIndex ~= glyphIndex then if cell.glyphIndex ~= glyphIndex then
cell.glyphIndex = glyphIndex cell.glyphIndex = glyphIndex
if fadeIndex < numFades then if fadeIndex < numFades then
@@ -100,19 +91,9 @@ function playdate.update()
end end
if mustDraw then if mustDraw then
-- count += 1
-- glyphMap:setTileAtPosition(cell.x, cell.y, cell.glyphIndex)
-- fadeMap:setTileAtPosition(cell.x, cell.y, cell.fadeIndex)
glyphs[cell.glyphIndex]:draw((cell.x - 1) * glyphWidth, (cell.y - 1) * glyphWidth) glyphs[cell.glyphIndex]:draw((cell.x - 1) * glyphWidth, (cell.y - 1) * glyphWidth)
fades[cell.fadeIndex]:draw((cell.x - 1) * glyphWidth, (cell.y - 1) * glyphWidth) fades[cell.fadeIndex]:draw((cell.x - 1) * glyphWidth, (cell.y - 1) * glyphWidth)
end end
end end
-- print(count / numGlyphs)
-- gfx.clear()
-- glyphMap:draw(0, 0)
-- fadeMap:draw(0, 0)
end end