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Merge pull request #143 from Sparker95/improve-safe-spawning
Civilian vehicle spawning
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,66 @@ | ||
| // Class: Location | ||
| /* | ||
| Method: (static)isPosEvenSafer | ||
| Returns true if the place is guaranteed safe for spawning specific vehicle. | ||
| It is very conservative and as such will disallow spawning in buildings or too close | ||
| to existing objects. | ||
| Parameters: _pos, _dir, _className | ||
| _pos - position ATL | ||
| _dir - direction | ||
| _className - vehicle class name | ||
| Returns: Bool | ||
| Author: Sparker 29.07.2018 | ||
| */ | ||
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| //#define DEBUG | ||
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| pr0_fn_getGlobalRectAndSize = { | ||
| params [["_pos", [], [[]]], ["_dir", 0, [0]], ["_bbox", [], [[]]] ]; | ||
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| private _bx = _bbox select 1 select 0; //width | ||
| private _by = _bbox select 1 select 1; //length | ||
| private _bz = _bbox select 1 select 2; //height | ||
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| private _c = cos _dir; | ||
| private _s = sin _dir; | ||
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| private _posASL = ATLTOASL _pos; | ||
| private _pos_0 = _posASL vectorAdd [_bx*_c + _by*_s, -_bx*_s + _by*_c, 0]; | ||
| private _pos_1 = _posASL vectorAdd [_bx*_c - _by*_s, -_bx*_s - _by*_c, 0]; | ||
| private _pos_2 = _posASL vectorAdd [-_bx*_c - _by*_s, _bx*_s - _by*_c, 0]; | ||
| private _pos_3 = _posASL vectorAdd [-_bx*_c + _by*_s, _bx*_s + _by*_c, 0]; | ||
| private _rect = [_pos_0, _pos_1, _pos_2, _pos_3]; | ||
| [_rect, [_bx, _by, _bz]] | ||
| }; | ||
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| params [ ["_thisClass", "", [""]], ["_pos", [], [[]]], ["_dir", 0, [0]], ["_className", "", [""]] ]; | ||
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| // Bail if Z is below surface, as it happens with positions of bridges | ||
| if (_pos#2 < -0.3) exitWith { | ||
| false | ||
| }; | ||
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| ([ | ||
| _pos, _dir, | ||
| [_className] call misc_fnc_boundingBoxReal | ||
| ] call pr0_fn_getGlobalRectAndSize) params ["_rect3D", "_size"]; | ||
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| // TODO: expand the class set here? | ||
| private _o = nearestObjects [_pos, [], 15, true] - (_pos nearRoads 15); | ||
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| _o findIf { | ||
| #ifndef _SQF_VM | ||
| private _bbox = 0 boundingBoxReal _x; | ||
| #else | ||
| private _bbox = [[0,0,0],[1,1,1],1]; | ||
| #endif | ||
| ([getPos _x, getDir _x, _bbox] call pr0_fn_getGlobalRectAndSize) params ["_oRect3D", "_oSize"]; | ||
| if(_oSize#2 > 0.3) then { | ||
| [_rect3D, _oRect3D] call misc_fnc_polygonCollision | ||
| } else { | ||
| false | ||
| } | ||
| } == -1 |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,45 @@ | ||
| // See https://gist.github.com/nyorain/dc5af42c6e83f7ac6d831a2cfd5fbece | ||
| private _fn_separatedPolys = { | ||
| params ["_a", "_b"]; | ||
| private _result = false; | ||
| for "_i" from 0 to (count _a - 1) do | ||
| { | ||
| // calculate the normal vector of the current edge | ||
| // this is the axis will we check in this loop | ||
| private _current = _a select _i; | ||
| private _next = _a select ((_i + 1) % count _a); | ||
| private _edge = [_next#0 - _current#0, _next#1 - _current#1]; | ||
| private _axis = [-(_edge#1), _edge#0]; | ||
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| // loop over all vertices of both polygons and project them | ||
| // onto the axis. We are only interested in max/min projections | ||
| private _aMaxProj = -1000000; | ||
| private _aMinProj = 1000000; | ||
| private _bMaxProj = -1000000; | ||
| private _bMinProj = 1000000; | ||
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| { | ||
| private _proj = _axis#0 * _x#0 + _axis#1 * _x#1; | ||
| _aMinProj = _aMinProj min _proj; | ||
| _aMaxProj = _aMaxProj max _proj; | ||
| } forEach _a; | ||
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| { | ||
| private _proj = _axis#0 * _x#0 + _axis#1 * _x#1; | ||
| _bMinProj = _bMinProj min _proj; | ||
| _bMaxProj = _bMaxProj max _proj; | ||
| } forEach _b; | ||
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| // now check if the intervals the both polygons projected on the | ||
| // axis overlap. If they don't, we have found an axis of separation and | ||
| // the given polygons cannot overlap | ||
| if(_aMaxProj < _bMinProj or _aMinProj > _bMaxProj) exitWith { | ||
| _result = true; | ||
| }; | ||
| }; | ||
| _result | ||
| }; | ||
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| params ["_a", "_b"]; | ||
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| !(([_a, _b] call _fn_separatedPolys) or {([_b, _a] call _fn_separatedPolys)}) |
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