City generator framework done
The last thing someone needs to do is grep the whole thing and rename "citygen" to general map generation framework.
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docs/citygen_docs.txt
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43
docs/citygen_docs.txt
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##Citygen framework by Dany0, 2015
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So you want to make a new map generator? Well you've come to the right place!
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In pkg/base/citygen you will find gen_city.lua which contains the basic framework.
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But you want to build a new generator, so just jump right into it.
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You'll need to mention your generator code file in modes.json. Add a new item there, it should probably look something like this:
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{
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"default" : [ "dany0/default/gen_terrain.lua", "dany0/default/gen_buildings.lua" ],
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"mynewmapgenerator" : [ "anon/mynewmapgenerator/mynewmapgenerator.lua" ]
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}
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Note that you need at least one file in it to work. The following is a minimal code that will generate a flat terrain.
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--code start
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function gen_terrain(mx, my, mz)
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local r, g, b = 12, 12, 12 -- base ground colour
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for x=0,mx-1 do
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for z=0,mz-1 do
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l = {0, my - 4, my - 4, 0, b, g, r, 1} -- map pillar, check out the vxl file format for "columns"
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common.map_pillar_set(x, z, l)
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end
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end
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end
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-- function load_buildings()
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-- dofile(DIR_CITYGEN_BUILDINGS.."/basic_building.lua")
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-- end
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-- function create_city_grid()
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-- end
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-- function manufacture_buildings()
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-- end
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--code end
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As you can see you need to specify - override a few functions. These functions will be called by gen_city.lua.
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If you have ANY questions, ask us on the chat #iceball on i.r0t.co or file an issue on github. Enjoy!
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@ -29,17 +29,12 @@ local function f_new_building(...)
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local s_build = this.build
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function this.build(x, y, z, width, depth, height)
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-- for x1=x,(x+width) do
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-- for z1=z,(z+height) do
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-- l = {0, 60, 60, 10, 120, 120, 120, 1}
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-- common.map_pillar_set(x1, z1, l)
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-- end
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if depth % 2 == 0 then depth = depth + 1 end
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local start_x, start_z = x, z
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local current_x, current_z = start_x, start_z
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local end_x, end_z = x+width, z+ height
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repeat
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--y = 60
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chunk_header = 0
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starting_block = y
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ending_block = y
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@ -48,18 +43,17 @@ local function f_new_building(...)
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r,g,b = 120, 120, 120
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type_of_block = 1
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pillar_table = {chunk_header, starting_block, ending_block, air_start, b, g, r, type_of_block}
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--common.map_pillar_set(current_x, current_z, pillar_table)
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-- common.map_pillar_set(current_x, current_z, pillar_table)
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for i=y,y+depth do
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rand = math.floor(math.random()*5)%4
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if rand == 0 then
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map_block_set(current_x, i, current_z, 1, 35, 156, 233)
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map_block_set(current_x, i+1, current_z, 1, 35, 156, 233)
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map_block_set(current_x-1, i, current_z, 1, r, g, b)
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map_block_set(current_x+1, i, current_z, 1, r, g, b)
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elseif rand == 3 and i > y+depth - 5 then
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if rand == 3 and i > y+depth - 5 then
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map_block_set(current_x, i, current_z, 1, r-60, g-60, b-60)
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else
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map_block_set(current_x, i, current_z, 1, r, g, b)
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if current_x % 2 == 0 and i < y+depth - 5 and i % 3 ~= 0 and i > y then
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map_block_set(current_x, i, current_z, 1, 35, 156, 233)
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else
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map_block_set(current_x, i, current_z, 1, r, g, b)
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end
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end
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end
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current_x = current_x + 1
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@ -72,7 +66,6 @@ local function f_new_building(...)
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current_x = start_x
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current_z = start_z
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repeat
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--y = 60
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chunk_header = 0
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starting_block = y
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ending_block = y
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@ -81,18 +74,17 @@ local function f_new_building(...)
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r,g,b = 120, 120, 120
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type_of_block = 1
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pillar_table = {chunk_header, starting_block, ending_block, air_start, b, g, r, type_of_block}
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--common.map_pillar_set(current_x, current_z, pillar_table)
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common.map_pillar_set(current_x, current_z, pillar_table)
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for i=y,y+depth do
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rand = math.floor(math.random()*5)%4
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if rand == 0 then
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map_block_set(current_x, i, current_z, 1, 35, 156, 233)
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map_block_set(current_x, i+1, current_z, 1, 35, 156, 233)
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map_block_set(current_x, i, current_z-1, 1, r, g, b)
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map_block_set(current_x, i, current_z+1, 1, r, g, b)
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elseif rand == 3 and i > y+depth - 5 then
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if rand == 3 and i > y+depth - 5 then
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map_block_set(current_x, i, current_z, 1, r-60, g-60, b-60)
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else
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map_block_set(current_x, i, current_z, 1, r, g, b)
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if current_z % 2 == 0 and i < y+depth - 5 and i % 3 ~= 0 and i > y then
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map_block_set(current_x, i, current_z, 1, 35, 156, 233)
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else
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map_block_set(current_x, i, current_z, 1, r, g, b)
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end
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end
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end
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current_z = current_z + 1
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27
pkg/base/citygen/dany0/default/gen_buildings.lua
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27
pkg/base/citygen/dany0/default/gen_buildings.lua
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function load_buildings()
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dofile(DIR_CITYGEN_BUILDINGS.."/basic_building.lua")
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end
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-- function create_city_grid()
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-- local mx, my, mz = common.map_get_dims()
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-- we're just doing a basic "procedural" generation, but if you want
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-- use this to set building x,y,z and build roads
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-- then call manufacture_buildings() to build the buildings
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-- end
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function manufacture_buildings()
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local mx, my, mz = common.map_get_dims()
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local building_number = math.floor((mx-24)/12)
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for i=1+12, mx-1-12, 1*(12+16) do
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print("- building section "..i)
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map_cache_start() -- cache here instead of outside the loop to save on RAM
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for y=1+12, mz-1-12, 1*(12+16) do
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rand_height = math.floor(13 + math.random()*37)
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print("RAND:"..rand_height)
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building = new_building({})
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building.build(i + 12, my-4-rand_height, y+12, 12, rand_height, 12)
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end
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map_cache_end()
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end
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end
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23
pkg/base/citygen/dany0/default/gen_terrain.lua
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23
pkg/base/citygen/dany0/default/gen_terrain.lua
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function gen_terrain(mx, my, mz)
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local asphalt_r, asphalt_g, asphalt_b = 12, 12, 12 -- base ground colour
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for x=0,mx-1 do
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for z=0,mz-1 do
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subtly_changing_the_colour = (1+(math.random()/10))
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l = {0, my - 4, my - 4, 0, asphalt_b*subtly_changing_the_colour, asphalt_g*subtly_changing_the_colour, asphalt_r*subtly_changing_the_colour, 1}
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if x % 8 == 0 and x % 16 ~= 0 then
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l = {0, my - 4, my - 4, 0, 120*subtly_changing_the_colour, 120*subtly_changing_the_colour, 120*subtly_changing_the_colour, 1}
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end
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common.map_pillar_set(x, z, l)
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end
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end
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for x=0,mx-1,16 do
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for z=0,mz-1 do
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if z % 4 ~= 0 then
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l = {0, my - 4, my - 4, 0, 233, 233, 233, 1}
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common.map_pillar_set(x, z, l)
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end
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end
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end
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end
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@ -14,9 +14,23 @@
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You should have received a copy of the GNU Lesser General Public License
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along with Ice Lua Components. If not, see <http://www.gnu.org/licenses/>.
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]]
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DIR_CITYGEN_BUILDINGS = "pkg/base/citygen/buildings"
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DIR_CITYGEN = "pkg/base/citygen/"
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DIR_CITYGEN_BUILDINGS = DIR_CITYGEN.."buildings/"
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--OVERRIDE ME! I am called 1st.
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function gen_terrain(mx, my, mz) end --mx = mapx = map "width"
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--OVERRIDE ME! I am called 2nd.
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function load_buildings() end
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--OVERRIDE ME! I am called 3rd.
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function create_city_grid() end
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--OVERRIDE ME! I am called 4th and last.
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function manufacture_buildings() end
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do
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local ret
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local loose, user_toggles, user_settings
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loose, user_toggles, user_settings = ...
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local mx,my,mz,mode
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@ -25,53 +39,35 @@ do
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mz = user_settings["mz"] or 512
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mode = user_settings["mode"] or "default"
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--TODO: move terrain gen to tpl_genterrain.lua
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local ret = common.map_new(mx, my, mz)
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common.map_set(ret)
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print("Generating asphalt")
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local asphalt_r, asphalt_g, asphalt_b = 12, 12, 12 -- base ground colour
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for x=0,mx-1 do
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for z=0,mz-1 do
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ayylmao = (1+(math.random()/10)) --this is horrible don't do this
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l = {0, my - 4, my - 4, 0, asphalt_b*ayylmao, asphalt_g*ayylmao, asphalt_r*ayylmao, 1}
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common.map_pillar_set(x, z, l)
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end
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modes_config = common.json_load(DIR_CITYGEN.."modes.json")
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local i = 1
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repeat
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dofile(DIR_CITYGEN..modes_config[mode][i]) --so you caught a "nil" error here? setting at least one file is mandatory!
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i = i + 1
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until modes_config[mode][i] == nil
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--this isn't supposed to be overridden --also the reason why it's hidden away here
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function execute_map_gen(mx, my, mz, mode)
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ret = common.map_new(mx, my, mz)
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common.map_set(ret)
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print("Generating terrain")
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gen_terrain(mx, my, mz)
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print("Loading buildings")
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load_buildings()
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--print("Loading prefabs")
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--load_kv6()
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print("Generating the city outline")
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create_city_grid()
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print("Making buildings")
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--map_cache_start() -- please handle map caching yourselves!
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manufacture_buildings()
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--collectgarbage() --waiting for this to be implemented
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print("gen finished")
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return ret, "citygen_"..mode.."("..mx..","..mz..","..my..")"
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end
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print("Generating lines")
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for x=0,mx-1,16 do
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for z=0,mz-1 do
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if z % 4 ~= 0 then
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l = {0, my - 4, my - 4, 0, 233, 233, 233, 1}
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common.map_pillar_set(x, z, l)
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end
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end
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end
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--TODO: read the mode from JSON city settings
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--TODO: mode should point to tpl_gencity.lua to generate the city grid
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--TODO: grid should probably be 2d, array of lines, then buildings should adapt to terrain
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print("Loading buildings")
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dofile(DIR_CITYGEN_BUILDINGS.."/basic_building.lua")
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-- building1 = new_building({})
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-- building1.build(mx/2, my-4-12, mz/2, 12, 12, 12)
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print("Making buildings")
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local building_number = math.floor((mx-24)/12)
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for i=1, mx-1, 12+16 do
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print("- building section "..i)
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map_cache_start() -- cache here instead of outside the loop to save on RAM
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for y=1, mz-1, 12+16 do
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building = new_building({})
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building.build(i + 12, my-4-12, y+12, 12, 12, 12)
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end
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map_cache_end()
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end
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--collectgarbage() --waiting for this to be implemented
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print("gen finished")
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return ret, "citygen("..mx..","..mz..","..my..")"
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end
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return execute_map_gen(mx, my, mz, mode)
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end
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3
pkg/base/citygen/modes.json
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3
pkg/base/citygen/modes.json
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{
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"default" : [ "dany0/default/gen_terrain.lua", "dany0/default/gen_buildings.lua" ]
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}
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