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wofl: compute angle

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This commit is contained in:
Fabien Freling 2024-10-08 14:02:03 +02:00
parent d509a2cc2f
commit 834b40e932
1 changed files with 19 additions and 5 deletions
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24
picotron/wolfenstein_src/main.lua
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@ -1,6 +1,9 @@
player = { player = {
x = nil, origin = {
y = nil x= nil,
y = nil
},
dir = nil
} }
col_bg = 1 col_bg = 1
@ -10,18 +13,29 @@ function _init()
for i=0,31 do for i=0,31 do
for j=0,31 do for j=0,31 do
if mget(i,j) == 5 then -- player id if mget(i,j) == 5 then -- player id
player.x = i player.origin.x = i + 0.5
player.y = j player.origin.y = j + 0.5
player.dir = math.pi / 2
break break
end end
end end
if (player.x) break if (player.x) break
end end
print("player: ("..player.x..", "..player.y..")") print("player: ("..player.origin.x..", "..player.origin.y..")")
end
function cast_ray(origin, angle)
end end
function _draw() function _draw()
cls(col_bg) cls(col_bg)
rectfill(0, 135, 480, 270, col_ground) rectfill(0, 135, 480, 270, col_ground)
local fov = 120 -- horizontal
local angle_step=(fov / 480) / 360 * math.pi
for x=0,480-1 do
local angle = (player.dir-(fov/2) + x * angle_step) % (2 * math.pi)
local bloc, dist = cast_ray(player.origin, angle)
end
-- map() -- map()
end end