a dit :

for t = 0, math.huge

Evilsantah a dit :

There's math formulae to calculate "future" colission points y'know ):

Jaackster a dit :

I put everything in a table now instead of requesting it each time and its much more responsive. You can basically spam it and it wont crash unless you click REALLY fast. Ill keep the timer though.

Before you couldnt even click twice without it crashing so I believe thats much more responsive than before.

Hakureimouse a dit :

Yup I tried it already, that was a huge improvement

I did a little bit of research about what Santah said and I think something like this could be implemented. If you don't mind I'll do some test with that.

Evilsantah a dit :

-- Function to determine where two lines (each based on 2 points) collide.
-- Ported from C to LUA
function linesIntersect(x1, y1, x2, y2, x3, y3, x4, y4)
local a1 = y2 - y1
local b1 = x1 - x2
local c1 = x2 * y1 - x1 * y2

-- Compute r3 and r4
local r3 = a1 * x3 + b1 * y3 + c1
local r4 = a1 * x4 + b1 * y4 + c1

-- Check signs of r3 and r4. If both point 3 and point 4 lie on
-- same side of line 1, the line segments do not intersect.

if r3 ~= 0 and r4 ~= 0 and math.sign(r3) == math.sign(r4) then
return nil -- DONT_INTERSECT
end

-- Compute a2, b2, c2

local a2 = y4 - y3
local b2 = x3 - x4
local c2 = x4 * y3 - x3 * y4

-- Compute r1 and r2

local r1 = a2 * x1 + b2 * y1 + c2
local r2 = a2 * x2 + b2 * y2 + c2

-- Check signs of r1 and r2. If both point 1 and point 2 lie
-- on same side of second line segment, the line segments do
-- not intersect.
if r1 ~= 0 and r2 ~= 0 and math.sign(r1) == math.sign(r2) then
return nil -- DONT_INTERSECT
end

-- Line segments intersect: compute intersection point.

local denom = a1 * b2 - a2 * b1
if denom == 0 then
return nil -- COLLINEAR
end
local offset = 0
if denom < 0 then offset = -denom / 2 else offset = denom / 2 end

-- The denom/2 is to get rounding instead of truncating. It
-- is added or subtracted to the numerator, depending upon the
-- sign of the numerator.

local num = b1 * c2 - b2 * c1
local x = 0
if num < 0 then x = num - offset else x = num + offset end
x = x / denom

num = a2 * c1 - a1 * c2
local y = 0
if num < 0 then y = num - offset else y = num + offset end
y = y / denom

return x, y
end

-- Function to determine where the line between (x1,y1) and (x2,y2) collide a rectangle
function lineIntersectsRect(x1, y1, x2, y2, leftTopX, leftTopY, rightBottomX, rightBottomY)
local angle1 = math.atan2(y2 - y1, x2 - x1)
local angleTLC = math.atan2(y2 - leftTopY, x2 - leftTopX)
local angleTRC = math.atan2(y2 - leftTopY, x2 - rightBottomX)
local x = nil
local y = nil
if angle1 < angleTLC then -- left edge
x, y = linesIntersect(x1, y1, x2, y2, leftTopX, rightBottomY, leftTopX, leftTopY)
if x ~= nil then
x = x + 30 -- this is just a custom offset to place the point a bit inside the rectangle
end
elseif angle1 > angleTLC and angle1 < angleTRC then -- top edge
x, y = linesIntersect(x1, y1, x2, y2, leftTopX, leftTopY, rightBottomX, leftTopY)
if x ~= nil then
y = y + 35
end
else -- right edge
x, y = linesIntersect(x1, y1, x2, y2, rightBottomX, leftTopY, rightBottomX, rightBottomY)
if x ~= nil then
x = x - 30
end
end
return x, y
end

Evilsantah a dit :

Used this in #cannonjump, both can come in handy for this :)

E: you might want to add another case where the angle is between left bottom and right bottom (bottom edge) in lineIntersectsRect as I didn't need this.

Sisterofpuga a dit :

wait where do i play?

Grimrice a dit :

## Init Error : Ediz.lua:274: [string "Grimrice.lua"]:44: 'then' expected
## [Grimrice] Lua script loaded in 0 ms (4000 max)

Grimrice a dit :

## Init Error : Ediz.lua:274: [string "Grimrice.lua"]:44: 'then' expected
## [Grimrice] Lua script loaded in 0 ms (4000 max)

Jaackster a dit :

Portal Gun! Click anywhere to shoot.

EDIT: Updated. Portals now instantly spawn on the nearest wall. With the help of Izstas making the line look nice.

http://pastebin.com/raw.php?i=CvdZMDyw
NEW: http://pastebin.com/raw.php?i=CvdZMDyw

OLD: http://pastebin.com/raw.php?i=qibZXAV3