resolution per pixel
obneq
parent
5022d30da0
commit
bdb04fa763
97
init.lua
97
init.lua
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@ -7,7 +7,7 @@
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-- 2012 obneq aka jin xi
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-- a picture is drawn using a node(box) to draw the supporting canvas
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-- and an entity which has the painting as it's texture.
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-- and an entity which has the painting as its texture.
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-- this texture is created by minetest-c55's internal image
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-- compositing engine (see tile.cpp).
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@ -22,7 +22,6 @@ textures = {
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darkgrey = "darkgrey.png", black = "black.png"
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}
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res = 16
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thickness = 0.1
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-- picture node
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@ -63,11 +62,27 @@ picnode = {
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}
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-- picture texture entity
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picent = {
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collisionbox = { 0, 0, 0, 0, 0, 0 },
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visual = "upright_sprite",
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textures = { "white.png" },
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on_activate = function(self, staticdata)
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local pos = self.object:getpos()
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local meta = minetest.env:get_meta(pos)
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local data = meta:get_string("painting:picturedata")
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data = minetest.deserialize(data)
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if not data.grid then return end
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self.object:set_properties({textures = { to_imagestring(data.grid, data.res) }})
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end
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}
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paintbox = { [0] = { -0.5,-0.5,0,0.5,0.5,0 },
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[1] = { 0,-0.5,-0.5,0,0.5,0.5 } }
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picent = {
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paintent = {
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collisionbox = { 0, 0, 0, 0, 0, 0 },
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visual = "upright_sprite",
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textures = { "white.png" },
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@ -96,23 +111,29 @@ picent = {
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local x = math.abs(p.x + p.z)
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local y = p.y
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x = round(x / (1/res))
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y = round((1-y) / (1/res))
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x = round(x / (1/self.res))
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y = round((1-y) / (1/self.res))
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x = clamp(x)
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y = clamp(y-1)
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x = clamp(x, self.res)
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y = clamp(y-1, self.res)
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self.grid[x][y]=colors[name]
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self.object:set_properties({textures = { to_imagestring(self.grid) }})
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self.object:set_properties({textures = { to_imagestring(self.grid, self.res) }})
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end,
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on_activate = function(self, staticdata)
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self.grid = minetest.deserialize(staticdata) or initgrid()
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self.object:set_properties({textures = { to_imagestring(self.grid) }})
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local data = minetest.deserialize(staticdata)
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if not data then return end
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self.fd = data.fd
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self.res = data.res
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self.grid = data.grid
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self.object:set_properties({ textures = { to_imagestring(self.grid, self.res) }})
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self.object:set_properties({ collisionbox = paintbox[self.fd%2] })
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end,
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get_staticdata = function(self)
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return minetest.serialize(self.grid)
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local data = { fd = self.fd, res = self.res, grid = self.grid }
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return minetest.serialize(data)
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end
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}
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@ -143,13 +164,12 @@ paintedcanvas = {
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pos = { x = pos.x + dir.x * off,
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y = pos.y,
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z = pos.z + dir.z * off}
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z = pos.z + dir.z * off }
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data = minetest.deserialize(data)
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data = to_imagestring(data)
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local p = minetest.env:add_entity(pos, "painting:picent"):get_luaentity()
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p.object:set_properties({ textures = { data }})
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p.object:set_properties({ textures = { to_imagestring(data.grid, data.res) }})
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p.object:setyaw(math.pi * fd / -2)
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return ItemStack("")
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@ -184,17 +204,18 @@ canvasnode = {
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after_dig_node=function(pos, oldnode, oldmetadata, digger)
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--get data and remove pixels
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local data
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local data = {}
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local objects = minetest.env:get_objects_inside_radius(pos, 0.5)
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for _, e in ipairs(objects) do
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e = e:get_luaentity()
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if e.grid then
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data = e.grid
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data.grid = e.grid
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data.res = e.res
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end
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e.object:remove()
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end
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if data then
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if data.grid then
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local item = { name = "painting:paintedcanvas", count = 1, metadata = minetest.serialize(data) }
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digger:get_inventory():add_item("main", item)
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end
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@ -230,7 +251,12 @@ easel = {
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on_punch = function(pos, node, player)
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local wielded = player:get_wielded_item():get_name()
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if wielded ~= "painting:canvas" then
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wielded = string.split(wielded, "_")
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local name = wielded[1]
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local res = tonumber(wielded[2])
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if name ~= "painting:canvas" then
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return
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end
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local meta = minetest.env:get_meta(pos)
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@ -245,10 +271,11 @@ easel = {
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local dir = dirs[fd]
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pos = { x = pos.x - 0.01 * dir.x, y = pos.y, z = pos.z - 0.01 * dir.z }
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local p = minetest.env:add_entity(pos, "painting:picent"):get_luaentity()
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local p = minetest.env:add_entity(pos, "painting:paintent"):get_luaentity()
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p.object:set_properties({ collisionbox = paintbox[fd%2] })
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p.object:setyaw(math.pi * fd/-2)
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p.grid = initgrid()
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p.object:setyaw(math.pi * fd / -2)
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p.grid = initgrid(res)
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p.res = res
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p.fd = fd
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meta:set_int("has_canvas", 1)
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@ -273,7 +300,7 @@ brush = {
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description = "brush",
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inventory_image = "default_tool_steelaxe.png",
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wield_image = "",
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wield_scale = {x=1,y=1,z=1},
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wield_scale = { x = 1, y = 1, z = 1 },
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stack_max = 99,
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liquids_pointable = false,
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tool_capabilities = {
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@ -286,8 +313,12 @@ brush = {
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minetest.register_entity("painting:picent", picent)
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minetest.register_node("painting:pic", picnode)
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minetest.register_craftitem("painting:canvas", canvas)
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minetest.register_craftitem("painting:canvas_16", canvas)
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minetest.register_craftitem("painting:canvas_32", canvas)
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minetest.register_craftitem("painting:canvas_64", canvas)
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minetest.register_craftitem("painting:paintedcanvas", paintedcanvas)
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minetest.register_entity("painting:paintent", paintent)
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minetest.register_node("painting:canvasnode", canvasnode)
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minetest.register_node("painting:easel", easel)
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@ -306,24 +337,24 @@ for i, color in ipairs(revcolors) do
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end
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minetest.register_alias("easel", "painting:easel")
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minetest.register_alias("canvas", "painting:canvas")
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minetest.register_alias("canvas", "painting:canvas_16")
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function initgrid()
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function initgrid(res)
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local grid, x, y = {}
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for x = 0, res-1 do
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for x = 0, res - 1 do
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grid[x] = {}
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for y = 0, res-1 do
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for y = 0, res - 1 do
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grid[x][y] = colors["white"]
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end
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end
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return grid
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end
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function to_imagestring(data)
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function to_imagestring(data, res)
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if not data then return end
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local imagestring = "[combine:"..res.."x"..res..":"
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for y = 0, res-1 do
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for x = 0, res-1 do
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for y = 0, res - 1 do
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for x = 0, res - 1 do
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imagestring = imagestring..x..","..y.."="..revcolors[ data[x][y] ]..".png:"
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end
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end
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@ -357,11 +388,11 @@ function round(num)
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return math.floor(num+0.5)
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end
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function clamp(num)
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function clamp(num, res)
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if num < 0 then
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return 0
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elseif num > res-1 then
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return res-1
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elseif num > res - 1 then
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return res - 1
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else
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return num
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end
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