games/RedMew
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added spiral builders

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This commit is contained in:
grilledham 2018-08-24 15:31:16 +01:00
parent 94a44397ba
commit 80df6bb16f
1 changed files with 40 additions and 1 deletions
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41
map_gen/shared/builders.lua
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@ -158,7 +158,8 @@ function Builders.rectangular_spiral(x_size, optional_y_size)
end
end
function Builders.circular_spiral(out_thickness, total_thickness)
function Builders.circular_spiral(in_thickness, total_thickness)
local out_thickness = total_thickness - in_thickness
local half_total_thickness = total_thickness * 0.5
return function(x, y)
local d = math.sqrt(x * x + y * y)
@ -170,6 +171,25 @@ function Builders.circular_spiral(out_thickness, total_thickness)
end
end
function Builders.circular_spiral_grow(in_thickness, total_thickness, grow_factor)
local out_thickness = total_thickness - in_thickness
local half_total_thickness = total_thickness * 0.5
local inv_grow_factor = 1 / grow_factor
return function(x, y)
local d = math.sqrt(x * x + y * y)
local factor = (d * inv_grow_factor) + 1
local total_thickness2 = total_thickness * factor
local out_thickness2 = out_thickness * factor
local half_total_thickness2 = half_total_thickness * factor
local angle = 1 + inv_pi * math.atan2(x, y)
local offset = d + (angle * half_total_thickness2)
return offset % total_thickness2 >= out_thickness2
end
end
function Builders.circular_spiral_n_threads(in_thickness, total_thickness, n_threads)
local out_thickness = total_thickness - in_thickness
local half_total_thickness = total_thickness * 0.5 * n_threads
@ -183,6 +203,25 @@ function Builders.circular_spiral_n_threads(in_thickness, total_thickness, n_thr
end
end
function Builders.circular_spiral_grow_n_threads(in_thickness, total_thickness, grow_factor, n_threads)
local out_thickness = total_thickness - in_thickness
local half_total_thickness = total_thickness * 0.5 * n_threads
local inv_grow_factor = 1 / grow_factor
return function(x, y)
local d = math.sqrt(x * x + y * y)
local factor = (d * inv_grow_factor) + 1
local total_thickness2 = total_thickness * factor
local out_thickness2 = out_thickness * factor
local half_total_thickness2 = half_total_thickness * factor
local angle = 1 + inv_pi * math.atan2(x, y)
local offset = d + (angle * half_total_thickness2)
return offset % total_thickness2 >= out_thickness2
end
end
local tile_map = {
[1] = false,
[2] = true,