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-- fsrender.lua
-- Rendering of a grid of characters into a formspec
local tm = advtrains.trackmap
function tm.render_grid_formspec(formsize_x, formsize_y, gridtbl, origin_pos, width, height)
local grid = gridtbl.grid
local gcolor = gridtbl.gcolor
local s = {
"formspec_version[3]",
"size["..formsize_x..","..formsize_y.."]",
"no_prepend[]",
"bgcolor[white;false;white]",
"style_type[label;font=mono]",
"label[0,0;",
minetest.get_color_escape_sequence("black")
}
local last_color = nil
for z=height-1, 0, -1 do
-- render a row
for x=0,width-1 do
local apos_x = origin_pos.x + x
local apos_z = origin_pos.z + z
local chr = " "
if grid[apos_x] and grid[apos_x][apos_z] then
local color = gcolor[apos_x][apos_z]
if color ~= last_color then
-- change the color of the text
table.insert(s, minetest.get_color_escape_sequence(color or "black"))
last_color = color
end
chr = grid[apos_x][apos_z]
end
table.insert(s, chr)
end
table.insert(s,"\n")
end
table.insert(s, "]")
table.insert(s, "style_type[label;font=]") -- reset font style
return table.concat(s)
end
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