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WIP trying to make a more realistic generator

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this is like from 2 days ago but i forgot to commit it
This commit is contained in:
Tangent
2026-07-21 18:58:35 -06:00
parent 90fa03265a
commit 831ab54250
2 changed files with 177 additions and 163 deletions
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src/main.lua
+3 -163
View File
@@ -1,139 +1,11 @@
local heightmap = require "lib.heightmap"
local map_generator = require "map_generator"
local lovebird = require "lib.lovebird"
local lume = require "lib.lume"
local map = {}
local biomes = {
-- [5] = {
-- name = "ocean",
-- altitude = {min = 0, max = 0.2}, -- bottom of world is the only part that matters
-- temperature = {min = 0, max = 1},
-- humidity = {min = 0, max = 1},
-- color = {0, 0, 0.67, 1},
-- },
-- [6] = {
-- name = "beach",
-- altitude = {min = 0.2, max = 0.205}, -- just above ocean
-- temperature = {min = 0, max = 1},
-- humidity = {min = 0, max = 0.8}, -- excluding upper humidity for swamp
-- color = {1, 1, 0.33, 1}, -- brighter yellow to distinguish from sand
-- },
-- [8] = {
-- name = "swamp", -- fun idea, but generates between ocean and water too often?
-- altitude = {min = 0, max = 1},
-- temperature = {min = 0.5, max = 1},
-- humidity = {min = 0.95, max = 1},
-- color = {0, 0.5, 0.33, 1},
-- },
-- [10] = {
-- name = "water",
-- altitude = {min = 0, max = 0.9}, -- top excluded because it should've gone downhill
-- temperature = {min = 0.1, max = 0.9}, -- bottom should be ice, top should evaporate
-- humidity = {min = 0.8, max = 1}, -- only the wettest places
-- color = {0, 0, 1, 1},
-- },
-- [20] = {
-- name = "sand",
-- altitude = {min = 0.2, max = 0.9}, -- top falls down, bottom is underwater
-- temperature = {min = 0, max = 1},
-- humidity = {min = 0, max = 0.2}, -- only where dry makes more sense for a desert
-- color = {1, 1, 0, 1},
-- },
-- [30] = {
-- name = "grass",
-- altitude = {min = 0.3, max = 0.9}, -- top of the world not enough air, bottom too wet / leaving space for others
-- temperature = {min = 0.2, max = 0.8}, -- not very sensitive to temperature
-- humidity = {min = 0.2, max = 0.6}, -- not very sensitive to humidity; but excluded from the worst
-- color = {0, 1, 0, 1},
-- },
-- [40] = {
-- name = "trees",
-- altitude = {min = 0.4, max = 0.7}, -- more sensitive than grass
-- temperature = {min = 0, max = 0.7},
-- humidity = {min = 0.3, max = 0.8}, -- these are not desert trees, they need more water
-- color = {0, 0.67, 0, 1},
-- },
-- [60] = {
-- name = "stone",
-- altitude = {min = 0, max = 1},
-- temperature = {min = 0, max = 1},
-- humidity = {min = 0, max = 1},
-- color = {0.67, 0.67, 0.67, 1},
-- },
-- [50] = {
-- name = "ice",
-- altitude = {min = 0, max = 1},
-- temperature = {min = 0, max = 0.01},
-- humidity = {min = 0.2, max = 1},
-- color = {1, 1, 1, 1},
-- },
[900] = {
name = "deep ocean",
altitude = {min = -math.huge, max = -400},
temperature = {min = -math.huge, max = math.huge},
humidity = {min = -math.huge, max = math.huge},
color = {0, 0, 0.25, 1},
},
[1000] = {
name = "ocean (definition, 0 meters)",
altitude = {min = -math.huge, max = 0},
temperature = {min = -math.huge, max = math.huge},
humidity = {min = -math.huge, max = math.huge},
color = {0, 0, 0.5, 1},
},
[2000] = {
name = "snowline (middle estimate)",
altitude = {min = 4000, max = math.huge},
temperature = {min = -math.huge, max = math.huge},
humidity = {min = -math.huge, max = math.huge},
color = {1, 1, 1, 1},
},
[2100] = {
name = "alpine zone",
altitude = {min = 3500, max = math.huge},
temperature = {min = -math.huge, max = math.huge},
humidity = {min = -math.huge, max = math.huge},
color = {0.8, 0.8, 0.8, 1},
},
[2200] = {
name = "subalpine zone",
altitude = {min = 3000, max = math.huge},
temperature = {min = -math.huge, max = math.huge},
humidity = {min = -math.huge, max = math.huge},
color = {0.67, 0.67, 0.67, 1},
},
[2300] = {
name = "montane zone",
altitude = {min = 2500, max = math.huge},
temperature = {min = -math.huge, max = math.huge},
humidity = {min = -math.huge, max = math.huge},
color = {0.67, 0.67, 0.5, 1},
},
}
local map
love.load = function()
map.size = 500
map.tile_size = 1
map.altitude = heightmap.create(map.size, map.size, -440, 8849) -- meters
map.temperature = heightmap.create(map.size, map.size, -89.2, 56.7) -- celsius
map.humidity = heightmap.create(map.size, map.size, 18, 3240) -- millimeters rainfall
local function altitude_ocean_bias(altitude)
local bias = 3.5 -- higher -> more ocean
local normalized_altitude = (altitude - -400) / (8849 - -440)
return -440 + normalized_altitude^bias * (8849 - -440)
end
local min, max = math.huge, -math.huge
for x = 0, map.size do
for y = 0, map.size do
local value = altitude_ocean_bias(map.altitude[x][y])
if value > max then max = value end
if value < min then min = value end
map.altitude[x][y] = value
end
end
print("Altitude", "Min: ", min, "Max:", max)
map = map_generator.generate()
-- if true then return end
@@ -165,38 +37,6 @@ love.load = function()
-- end
-- end
-- heightmap.normalize(map.humidity, 18, 3240)
-- planetizer!
local biome_order = {}
for order in pairs(biomes) do
biome_order[#biome_order + 1] = order
end
table.sort(biome_order)
map.terrain = {w = map.size, h = map.size}
local radius = (map.size / 2)^2
for x = 0, map.size do
map.terrain[x] = {}
for y = 0, map.size do
if lume.distance(x, y, map.size / 2, map.size / 2, true) < radius then
-- for _, biome in ipairs(biomes) do
for _, order in ipairs(biome_order) do
local biome = biomes[order]
local altitude = map.altitude[x][y]
if altitude >= biome.altitude.min and altitude <= biome.altitude.max then
local temperature = map.temperature[x][y]
if temperature >= biome.temperature.min and temperature <= biome.temperature.max then
local humidity = map.humidity[x][y]
if humidity >= biome.humidity.min and humidity <= biome.humidity.max then
map.terrain[x][y] = biome.color
break
end
end
end
end
end
end
end
end
local camera = {
src/map_generator.lua
+174
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@@ -0,0 +1,174 @@
local heightmap = require "lib.heightmap"
local lume = require "lib.lume"
local biomes = {
-- [5] = {
-- name = "ocean",
-- altitude = {min = 0, max = 0.2}, -- bottom of world is the only part that matters
-- temperature = {min = 0, max = 1},
-- humidity = {min = 0, max = 1},
-- color = {0, 0, 0.67, 1},
-- },
-- [6] = {
-- name = "beach",
-- altitude = {min = 0.2, max = 0.205}, -- just above ocean
-- temperature = {min = 0, max = 1},
-- humidity = {min = 0, max = 0.8}, -- excluding upper humidity for swamp
-- color = {1, 1, 0.33, 1}, -- brighter yellow to distinguish from sand
-- },
-- [8] = {
-- name = "swamp", -- fun idea, but generates between ocean and water too often?
-- altitude = {min = 0, max = 1},
-- temperature = {min = 0.5, max = 1},
-- humidity = {min = 0.95, max = 1},
-- color = {0, 0.5, 0.33, 1},
-- },
-- [10] = {
-- name = "water",
-- altitude = {min = 0, max = 0.9}, -- top excluded because it should've gone downhill
-- temperature = {min = 0.1, max = 0.9}, -- bottom should be ice, top should evaporate
-- humidity = {min = 0.8, max = 1}, -- only the wettest places
-- color = {0, 0, 1, 1},
-- },
-- [20] = {
-- name = "sand",
-- altitude = {min = 0.2, max = 0.9}, -- top falls down, bottom is underwater
-- temperature = {min = 0, max = 1},
-- humidity = {min = 0, max = 0.2}, -- only where dry makes more sense for a desert
-- color = {1, 1, 0, 1},
-- },
-- [30] = {
-- name = "grass",
-- altitude = {min = 0.3, max = 0.9}, -- top of the world not enough air, bottom too wet / leaving space for others
-- temperature = {min = 0.2, max = 0.8}, -- not very sensitive to temperature
-- humidity = {min = 0.2, max = 0.6}, -- not very sensitive to humidity; but excluded from the worst
-- color = {0, 1, 0, 1},
-- },
-- [40] = {
-- name = "trees",
-- altitude = {min = 0.4, max = 0.7}, -- more sensitive than grass
-- temperature = {min = 0, max = 0.7},
-- humidity = {min = 0.3, max = 0.8}, -- these are not desert trees, they need more water
-- color = {0, 0.67, 0, 1},
-- },
-- [60] = {
-- name = "stone",
-- altitude = {min = 0, max = 1},
-- temperature = {min = 0, max = 1},
-- humidity = {min = 0, max = 1},
-- color = {0.67, 0.67, 0.67, 1},
-- },
-- [50] = {
-- name = "ice",
-- altitude = {min = 0, max = 1},
-- temperature = {min = 0, max = 0.01},
-- humidity = {min = 0.2, max = 1},
-- color = {1, 1, 1, 1},
-- },
[900] = {
name = "deep ocean",
altitude = {min = -math.huge, max = -400},
temperature = {min = -math.huge, max = math.huge},
humidity = {min = -math.huge, max = math.huge},
color = {0, 0, 0.25, 1},
},
[1000] = {
name = "ocean (definition, 0 meters)",
altitude = {min = -math.huge, max = 0},
temperature = {min = -math.huge, max = math.huge},
humidity = {min = -math.huge, max = math.huge},
color = {0, 0, 0.5, 1},
},
[2000] = {
name = "snowline (middle estimate)",
altitude = {min = 4000, max = math.huge},
temperature = {min = -math.huge, max = math.huge},
humidity = {min = -math.huge, max = math.huge},
color = {1, 1, 1, 1},
},
[2100] = {
name = "alpine zone",
altitude = {min = 3500, max = math.huge},
temperature = {min = -math.huge, max = math.huge},
humidity = {min = -math.huge, max = math.huge},
color = {0.8, 0.8, 0.8, 1},
},
[2200] = {
name = "subalpine zone",
altitude = {min = 3000, max = math.huge},
temperature = {min = -math.huge, max = math.huge},
humidity = {min = -math.huge, max = math.huge},
color = {0.67, 0.67, 0.67, 1},
},
[2300] = {
name = "montane zone",
altitude = {min = 2500, max = math.huge},
temperature = {min = -math.huge, max = math.huge},
humidity = {min = -math.huge, max = math.huge},
color = {0.67, 0.67, 0.5, 1},
},
}
local function generate()
local map = {}
map.size = 500
map.tile_size = 1
map.altitude = heightmap.create(map.size, map.size, -440, 8849) -- meters
map.temperature = heightmap.create(map.size, map.size, -89.2, 56.7) -- celsius
map.humidity = heightmap.create(map.size, map.size, 18, 3240) -- millimeters rainfall
local function altitude_ocean_bias(altitude)
local bias = 3.5 -- higher -> more ocean
local normalized_altitude = (altitude - -400) / (8849 - -440)
return -440 + normalized_altitude^bias * (8849 - -440)
end
local min, max = math.huge, -math.huge
for x = 0, map.size do
for y = 0, map.size do
local value = altitude_ocean_bias(map.altitude[x][y])
if value > max then max = value end
if value < min then min = value end
map.altitude[x][y] = value
end
end
print("Altitude", "Min: ", min, "Max:", max)
-- planetizer!
local biome_order = {}
for order in pairs(biomes) do
biome_order[#biome_order + 1] = order
end
table.sort(biome_order)
map.terrain = {w = map.size, h = map.size}
local radius = (map.size / 2)^2
for x = 0, map.size do
map.terrain[x] = {}
for y = 0, map.size do
if lume.distance(x, y, map.size / 2, map.size / 2, true) < radius then
-- for _, biome in ipairs(biomes) do
for _, order in ipairs(biome_order) do
local biome = biomes[order]
local altitude = map.altitude[x][y]
if altitude >= biome.altitude.min and altitude <= biome.altitude.max then
local temperature = map.temperature[x][y]
if temperature >= biome.temperature.min and temperature <= biome.temperature.max then
local humidity = map.humidity[x][y]
if humidity >= biome.humidity.min and humidity <= biome.humidity.max then
map.terrain[x][y] = biome.color
break
end
end
end
end
end
end
end
return map
end
return {
generate = generate,
}