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Making Magmaul-derived laser sight stop upon targetting MOID
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 Joined: Sun Oct 29, 2006 4:26 am Posts: 298 
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  Making Magmaul-derived laser sight stop upon targetting MOIDThis code is influenced heavily by the Magmaul's (Browncoat Gun) targeting dots - in that case it draws an arc, but here I only want it to draw dots in a straight line between the point of emission and the target. I've got it working just fine, except I didn't notice in the initial code that the dots only stop when they hit terrain. What I'm looking for is a way to make it so the dots also stop when they're aimed at an Actor or MOSRotating or whatnot. Also I know the code isn't super efficient use, but I'm just trying to get it working before I clean it up.
Code: if self.laserTimer:IsPastSimMS(25) then self.laserTimer:Reset(); for i = 1, #self.particleTable do if MovableMan:IsParticle(self.particleTable[i]) then self.particleTable[i].ToDelete = true; end end self.particleTable = {}; self.guideParPos = self.Pos - Vector(-10 , 0):RadRotate(self.RotAngle); self.guideParVel = self.Vel - Vector(1 ,40):RadRotate(self.RotAngle); for i = 1, self.maxTrajectoryPars do if SceneMan:GetTerrMatter(self.guideParPos.X,self.guideParPos.Y) == 0 then self.guideParPos = self.guideParPos + self.guideParVel/3; local laserParticle = CreateMOPixel("Pop Particle"); laserParticle.Pos = self.guideParPos; MovableMan:AddParticle(laserParticle); self.particleTable[#self.particleTable+1] = laserParticle; else break; end end self.guideParPos = self.Pos - Vector(10 , 0):RadRotate(self.RotAngle); self.guideParVel = self.Vel - Vector(-1 ,40):RadRotate(self.RotAngle); for i = 1, self.maxTrajectoryPars do if SceneMan:GetTerrMatter(self.guideParPos.X,self.guideParPos.Y) == 0 then self.guideParPos = self.guideParPos + self.guideParVel/3; local laserParticle = CreateMOPixel("Pop Particle"); laserParticle.Pos = self.guideParPos; MovableMan:AddParticle(laserParticle); self.particleTable[#self.particleTable+1] = laserParticle; else break; end end end tldr; Need a laser sight that takes the distance between two points and places dots along the line in intervals. This method that I'm using 'works', but only ends when it hits terrain instead of anything. Help! |
| Fri Nov 30, 2012 8:13 pm |
 
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REAL AMERICAN HERO  Joined: Sat Jan 27, 2007 10:25 pm Posts: 5655
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Re: Making Magmaul-derived laser sight stop upon targetting MOID You'd have to cast a ray to determine the endpoint, but the rest of that code should be functional. Basically you'd need to replace
Code: if SceneMan:GetTerrMatter(self.guideParPos.X,self.guideParPos.Y) == 0 then in both if blocks with a check against the resultant particle from an MORay cast. You should only need to do the raycast once, though you might want to repeat it depending on projectile speed. Specifically, you need an obstacle ray. Basically, if you're not 100% on how that code is working, it's generating the particles on a per-frame basis based on the particle's RotAngle, and it's avoiding terrain with the GetTerrMatter check (0 is Air). Replace that check with the equivalent ObstacleRay end value and you won't be able to pass through MOs or terrain if that didn't make any sense I could theoretically work up better code |
| Sun Dec 02, 2012 11:16 pm |
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 Joined: Tue Jun 12, 2007 11:52 pm Posts: 13144 Location: Here
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Re: Making Magmaul-derived laser sight stop upon targetting MOID It'd be more efficient to use GetMOIDPixel right after GetTerrMatter(), since you only need to check a single pixel.
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| Mon Dec 03, 2012 1:47 am |
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Joined: Sun Oct 29, 2006 4:26 am Posts: 298
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Re: Making Magmaul-derived laser sight stop upon targetting MOID CaveCricket48 wrote: It'd be more efficient to use GetMOIDPixel right after GetTerrMatter(), since you only need to check a single pixel. Yeah, I tried that, but no matter what I set it to equal it didn't seem to make an effect one way or the other on whether the beam was cast. |
| Mon Dec 03, 2012 2:11 pm |
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Joined: Tue Jun 12, 2007 11:52 pm Posts: 13144 Location: Here
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Re: Making Magmaul-derived laser sight stop upon targetting MOID Did you try checking if it was equal to 255?
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| Mon Dec 03, 2012 9:57 pm |
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Joined: Sun Oct 29, 2006 4:26 am Posts: 298
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Re: Making Magmaul-derived laser sight stop upon targetting MOID CaveCricket48 wrote: Did you try checking if it was equal to 255? Changing it to Code: if SceneMan:GetMOIDPixel(self.guideParPos.X,self.guideParPos.Y) == 255 then Changing it to ~= 255 does something odd, however - the beam only extends two dots out from the emitter, but if a MO crosses its path in that very short range, the beam dots extend over the length of the sprite along the vector the beam is going (if that makes ANY sense at all). |
| Mon Dec 03, 2012 10:19 pm |
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Joined: Tue Jun 12, 2007 11:52 pm Posts: 13144 Location: Here
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Re: Making Magmaul-derived laser sight stop upon targetting MOID Can you post the entire script?
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| Wed Dec 05, 2012 4:19 am |
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