library-mirrors/light_world.lua
1
0
Fork 0
mirror of https://github.com/tanema/light_world.lua.git synced 2024-12-11 01:14:26 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

fixed inaccuracy of the inRange method in Light. also added it to the draw methods in light so that they wont draw if not needed

Browse Source
This commit is contained in:
Tim Anema 2014-11-05 23:05:21 -05:00
parent 3d4819cda4
commit 233d40ea39
1 changed files with 10 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
lib/light.lua
View File

@ -107,15 +107,17 @@ function light:setGlowStrength(strength)
self.glowStrength = strength
end
function light:inRange(l,t,w,h)
return self.x + self.range > l and
self.x - self.range < (l+w) and
self.y + self.range > t and
self.y - self.range < (t+h)
function light:inRange(l,t,w,h,s)
local lx, ly, rs = (self.x + l/s) * s, (self.y + t/s) * s, self.range * s
return (lx + rs) > 0 and
(lx - rs) < w/s and
(ly + rs) > 0 and
(ly - rs) < h/s
end
function light:drawShadow(l,t,w,h,s,bodies, canvas)
if self.visible and self:inRange(l,t,w,h) then
if self.visible and self:inRange(l,t,w,h,s) then
-- calculate shadows
local shadow_geometry = {}
for i = 1, #bodies do
@ -167,7 +169,7 @@ function light:drawShadow(l,t,w,h,s,bodies, canvas)
end
function light:drawShine(l,t,w,h,s,bodies,canvas)
if self.visible then
if self.visible and self:inRange(l,t,w,h,s) then
--update shine
self.shine:clear(255, 255, 255)
util.drawto(self.shine, l, t, s, function()
@ -183,7 +185,7 @@ function light:drawShine(l,t,w,h,s,bodies,canvas)
end
function light:drawPixelShadow(l,t,w,h,s, normalMap, canvas)
if self.visible then
if self.visible and self:inRange(l,t,w,h,s) then
if self.normalInvert then
self.normalInvertShader:send('lightColor', {self.red / 255.0, self.green / 255.0, self.blue / 255.0})
self.normalInvertShader:send("lightPosition", {(self.x + l/s) * s, (h/s - (self.y + t/s)) * s, self.z / 255.0})