math problem

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math problem #231607 10/15/08 17:27 10/15/08 17:27
Joined: Mar 2005 Posts: 969 ch Loopix OP User
Loopix OP User Joined: Mar 2005 Posts: 969 ch	Hello How do I calculate the vec_dist from the origin of an entity to the bounding-box of the same entity. It needs to work for the x/y size of the entity...z is not important. Thanks for any advise (preferably code...cause I'm bad in math) Get MystyMood for free...now! You need plants and trees for your game?

Re: math problem [Re: Loopix] #231616 10/15/08 18:09 10/15/08 18:09
Joined: Feb 2008 Posts: 337 V Vadim647 Senior Member
Vadim647 Senior Member V Joined: Feb 2008 Posts: 337	vec_dist(my.x,vector(my.x+my.max_x,my.y+my.max_y,my.z)); OR look at manual - "max_x" I switched to other account since marth 2010. Guess which.

Re: math problem [Re: Vadim647] #231626 10/15/08 18:48 10/15/08 18:48
Joined: Mar 2005 Posts: 969 ch Loopix OP User
Loopix OP User Joined: Mar 2005 Posts: 969 ch	thanks...but I probably diden't explain very well I need something like: Code: if(vec_dist(my.x,player.x)<(vec_dist(my.x,vector(my.x+my.max_x,my.y+my.max_y,my.z)))) { player is within the bounding box } ...unfortunately this doesen't seem to work Get MystyMood for free...now! You need plants and trees for your game?

Re: math problem [Re: Loopix] #231683 10/16/08 08:43 10/16/08 08:43
Joined: Jul 2007 Posts: 959 nl F flits User
flits User F Joined: Jul 2007 Posts: 959 nl	did you updated the bounding box so that it isnt aa box 16,16,16 "empty"

Re: math problem [Re: flits] #231686 10/16/08 09:27 10/16/08 09:27
Joined: Mar 2005 Posts: 969 ch Loopix OP User
Loopix OP User Joined: Mar 2005 Posts: 969 ch	Yes the boundingbox is updated with c_setminmax...I can see that when double pressing F11. My above code is definately crap...so don't look at that! What I want is that the player calls a function when it enters the bounding box of a rectancular model (scale_x is bigger than scale_y). I could easyly achieve the same by making the model non-passable and calling and event trough event_impact...but I don't want that because the model needs to be passable all the time. Get MystyMood for free...now! You need plants and trees for your game?

Re: math problem [Re: Loopix] #231691 10/16/08 10:45 10/16/08 10:45
M mercuryus Unregistered
mercuryus Unregistered M	Quote: How do I calculate the vec_dist from the origin of an entity to the bounding-box of the same entity. [de]Du suchst den Abstand von dem Zentrum eines Models zu deren eigenen boundingbox? Orientiert oder mit freiem Winkel (da ja eine boundingbox ein Quader ist)? Orientiert: min_x, max_x, min_y, max_y (nach c_setminmax oder c_updatehull) Mit freien Winkel wirds etwas aufw�ndiger... Oder suchst Du den Abstand von dem zentrum eines Modelles zu der boundingbox eines ANDEREN Entites?

Re: math problem [Re: ] #231704 10/16/08 13:03 10/16/08 13:03
Joined: Oct 2004 Posts: 1,655 T testDummy Serious User
testDummy Serious User T Joined: Oct 2004 Posts: 1,655	mercuryus ~translated: Quote: You are looking for the distance from the center a model for their own BoundingBox? Oriented or with free angle (because even a bounding box is a cuboid)? Oriented: min_x, max_x, min_y, max_y (after c_setminmax or c_updatehull) With free angle is somewhat complicated ... Or are you looking for the distance from the center of a model to the BoundingBox ANOTHER entities? critical point!? "With free angle is somewhat complicated ..." Quoting Loopix. Quote: I could easyly achieve the same by making the model non-passable and calling and event trough event_impact... If the system works as designed(?; no bugs in engine?), set bbox detector entity's push lower than player entity's push, ENABLE_PUSH, and set event function for the detector, c_move IGNORE_PUSH, then check EVENT_PUSH with optional skill id in that event function!? (Entities with lower push values are pseudo-passable !?)

Re: math problem [Re: testDummy] #231718 10/16/08 15:19 10/16/08 15:19
Joined: Mar 2006 Posts: 2,503 SC, United States xXxGuitar511 Expert
xXxGuitar511 Expert Joined: Mar 2006 Posts: 2,503 SC, United States	Code: var tang[3]; vec_diff(temp, player.x, my.x); vec_set(tang, my.pan); vec_inverse(tang); vec_rotate(temp, tang); // // Now temp holds the offset of the object in local coordinates. // if (temp.x > my.min_x && temp.x < my.max_x) && (temp.y > my.min_y && temp.y < my.max_y) { // I'm inside the XY plane! } ...Admit I'm the best, lol. Last edited by xXxDisciple; 10/16/08 15:23. xXxGuitar511 - Programmer

Re: math problem [Re: xXxGuitar511] #231750 10/16/08 17:54 10/16/08 17:54
Joined: Mar 2005 Posts: 969 ch Loopix OP User
Loopix OP User Joined: Mar 2005 Posts: 969 ch	Guitar...YOU ARE THE BEST I will compensate your awesome piece of code with a brand new tree-pack. Nevertheless I'd also like to thank all the others for their helpfull attitude. For a moment I thought the forum is kind of dead...but now I can feel some of the good old c-script spirit coming back. Loooooong lives c-sript and all the good old forum members Get MystyMood for free...now! You need plants and trees for your game?