hexyz is tower defense game, and a lua library for dealing with hexagonal grids
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function terr(a)
local R = math.random(35, 75) / 100
local G = math.random(35, 75) / 100
local B = math.random(35, 75) / 100
local A = a or math.random()
return vec4(R, G, B, A)
end
function rmono()
return vec4(1, 1, 1, math.random())
end
function show_axes()
local xaxis = am.line(vec2(win.left, 0), vec2(win.right, 0))
local yaxis = am.line(vec2(0, win.top), vec2(0, win.bottom))
win.scene:append(am.translate(0, 0) ^ am.group{xaxis, yaxis}:tag"axes")
end