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painting
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use only one entity for drawing

master
obneq 2012-08-05 10:44:59 +02:00
parent 7f243cfcf1
commit ec89ba4c94
1 changed files with 105 additions and 80 deletions
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185
init.lua
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@ -63,21 +63,62 @@ picnode = {
}
-- picture texture entity
paintbox1 = { -0.5,-0.5,0,0.5,0.5,0 }
paintbox2 = { 0,-0.5,-0.5,0,0.5,0.5 }
picent = {
collisionbox = { 0,0,0,0,0,0 },
collisionbox = { 0, 0, 0, 0, 0, 0 },
visual = "upright_sprite",
textures = { "white.png" },
on_activate = function(self, staticdata)
on_punch = function(self, puncher, time_from_last_punch, tool_capabilities, dir)
local ppos = puncher:getpos()
--get player eye level
ppos = { x = ppos.x, y = ppos.y+(1.5 + 1/16), z = ppos.z }
local pos = self.object:getpos()
local l = puncher:get_look_dir()
local d = dirs[self.fd]
local od = dirs[(self.fd + 1) % 4]
local normal = { x = d.x, y = 0, z = d.z }
local p = intersect(ppos, l, pos, normal)
local off = -0.5
pos = { x = pos.x + off * od.x, y=pos.y + off, z=pos.z + off * od.z }
p = sub(p, pos)
local x = math.abs(p.x + p.z)
local y = p.y
x = round(x/(1/res))
y = round((1-y)/(1/res))
x = clamp(x)
y = clamp(y-1)
local name = puncher:get_wielded_item():get_name()
name = string.split(name, "_")[2]
local t = textures[name]
if t then
self.grid[x][y]=colors[name]
self.object:set_properties({textures = { to_imagestring(self.grid) }})
end
end,
on_activate = function(self, staticdata)
local pos = self.object:getpos()
local meta = minetest.env:get_meta(pos)
local data = meta:get_string("painting:picturedata")
if not data then return end
data = minetest.deserialize(data)
data = to_imagestring(data)
self.object:set_properties({textures = { data }})
end
if data == "" then
self.grid = initgrid()
else
data = minetest.deserialize(data)
data = to_imagestring(data)
self.object:set_properties({textures = { data }})
end
end
}
--paintedcanvas picture inventory item
@ -145,52 +186,34 @@ canvasnode = {
groups = { snappy = 2, choppy = 2, oddly_breakable_by_hand = 2 },
drop = "",
can_dig = function ()
return true
end,
on_construct = function(pos)
local node = minetest.env:get_node(pos)
local fd = node.param2
local dir = dirs[(fd + 1) % 4]
local off = -(0.5 - 1/(res*2))
local master
for y = 0, res-1 do
for x = 0, res-1 do
local np = { x = pos.x + off*dir.x + x/res*dir.x,
y = pos.y - off - y/res,
z = pos.z + off*dir.z + x/res*dir.z }
local p = "painting:pixel_white"
p = minetest.env:add_entity(np, p):get_luaentity()
if x==0 and y == 0 then
p.grid = initgrid()
master = p
else
p.grid = nil
end
p.parent = master
p.object:setyaw(math.pi*fd/-2)
p.pos={x=x, y=y}
p.name="easel"
end
local easel = minetest.env:get_node({ x = pos.x, y = pos.y - 1, z = pos.z})
local fd = easel.param2
local dir = dirs[fd]
pos = {x = pos.x - 0.01 * dir.x, y = pos.y, z = pos.z - 0.01 * dir.z}
local p = minetest.env:add_entity(pos, "painting:picent"):get_luaentity()
p.object:setyaw(math.pi*easel.param2/-2)
p.fd = easel.param2
p.grid = initgrid()
if fd == 0 or fd == 2 then
p.object:set_properties({ collisionbox = paintbox1 })
else
p.object:set_properties({ collisionbox = paintbox2 })
end
end,
after_dig_node=function(pos, oldnode, oldmetadata, digger)
--get data and remove pixels
local data
local objects = minetest.env:get_objects_inside_radius(pos, 1)
local objects = minetest.env:get_objects_inside_radius(pos, 0.5)
for _, e in ipairs(objects) do
e = e:get_luaentity()
if e.name == "easel" then
if e.grid then
data = e.grid
end
e.object:remove()
if e.grid then
data = e.grid
end
e.object:remove()
end
if data then
@ -243,7 +266,7 @@ easel = {
meta:set_int("has_canvas", 1)
local itemstack = ItemStack("painting:canvas")
player:get_inventory():remove_item("main", itemstack)
player:get_inventory():remove_item("main", itemstack)
end,
can_dig = function(pos,player)
@ -257,30 +280,7 @@ easel = {
end
}
--pixel and brushes
local c = 1/(res*2)
local p = "white.png"
pixel = {
physical = true,
collisionbox = { -c, -c, -c, c, c, c },
visual = "cube",
textures = { p, p, p, p, p, p },
visual_size = { x = 1/res, y = 1/res },
automatic_rotate = false,
on_punch = function(self, hitter)
local name = hitter:get_wielded_item():get_name()
name = string.split(name, "_")[2]
self.parent.grid[self.pos.x][self.pos.y]=colors[name]
local p = textures[name]
if p then
self.object:set_properties({textures = { p, p, p, p, p, p }})
end
end
}
--brushes
brush = {
description = "brush",
@ -292,12 +292,7 @@ brush = {
tool_capabilities = {
full_punch_interval = 1.0,
max_drop_level=0,
groupcaps={
-- For example:
fleshy={times={[2]=0.80, [3]=0.40}, maxwear=0.05, maxlevel=1},
snappy={times={[2]=0.80, [3]=0.40}, maxwear=0.05, maxlevel=1},
choppy={times={[3]=0.90}, maxwear=0.05, maxlevel=0}
}
groupcaps = {}
}
}
@ -316,7 +311,6 @@ revcolors = {}
for color, _ in pairs(textures) do
table.insert(revcolors, color)
minetest.register_entity("painting:pixel_"..color, pixel)
minetest.register_tool("painting:brush_"..color, brush)
end
@ -350,7 +344,38 @@ function to_imagestring(data)
end
dirs = {
[0] = {x = 0, z = 1},
[1] = {x = 1, z = 0},
[2] = {x = 0, z =-1},
[3] = {x =-1, z = 0} }
[0] = { x = 0, z = 1 },
[1] = { x = 1, z = 0 },
[2] = { x = 0, z =-1 },
[3] = { x =-1, z = 0 } }
function sub(v, w)
return { x = v.x - w.x,
y = v.y - w.y,
z = v.z - w.z }
end
function dot(v, w)
return v.x * w.x + v.y * w.y + v.z * w.z
end
function intersect(pos, dir, origin, normal)
local t = -(dot(sub(pos, origin), normal)) / dot(dir, normal)
return { x = pos.x + dir.x * t,
y = pos.y + dir.y * t,
z = pos.z + dir.z * t }
end
function round(num)
return math.floor(num+0.5)
end
function clamp(num)
if num < 0 then
return 0
elseif num > 15 then
return 15
else
return num
end
end