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add simuv4 collision bug fixes to simuv5 

git-svn-id: https://svn.code.sf.net/p/speed-dreams/code/trunk@9317 30fe4595-0a0c-4342-8851-515496e4dcbd
This commit is contained in:
iobyte 2024-02-12 19:14:04 +00:00
parent 91cfc45053
commit 8579c811a6
1 changed files with 46 additions and 27 deletions
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73
src/modules/simu/simuv5/collide.cpp
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@ -418,10 +418,30 @@ static void SimCarCollideResponse(void * /*dummy*/, DtObjectRef obj1, DtObjectRe
}
}
// Static object and shape list.
// TODO: Dynamic implementation.
static DtShapeRef fixedobjects[100];
// Id to the next free slot in fixedobjects.
static size_t fixedid;
static bool isFixedObject(DtObjectRef obj)
{
for (size_t i = 0; i < fixedid; i++)
{
if (obj == &(fixedobjects[i]))
return true;
}
return false;
}
// Collision response for walls.
// TODO: Separate common code with car-car collision response.
static void SimCarWallCollideResponse(void *clientdata, DtObjectRef obj1, DtObjectRef obj2, const DtCollData *collData)
{
// ignore wall with wall collision
if (isFixedObject(obj1) && isFixedObject(obj2))
return;
tCar* car; // The car colliding with the wall.
float nsign; // Normal direction correction for collision plane.
sgVec2 p; // Cars collision point delivered by solid.
@ -569,17 +589,9 @@ void SimCollideRemoveCar(tCar *car, int nbcars)
}
}
// Static object and shape list.
// TODO: Dynamic implementation.
static DtShapeRef fixedobjects[100];
// Id to the next free slot in fixedobjects.
static unsigned int fixedid;
void SimCarCollideShutdown(int nbcars)
{
int i;
for (i = 0; i < nbcars; i++)
for (int i = 0; i < nbcars; i++)
{
// Check if car has not been removed already (wrecked).
if (SimCarTable[i].shape != NULL)
@ -589,8 +601,7 @@ void SimCarCollideShutdown(int nbcars)
}
}
unsigned int j;
for (j = 0; j < fixedid; j++)
for (size_t j = 0; j < fixedid; j++)
{
dtClearObjectResponse(&fixedobjects[j]);
dtDeleteObject(&fixedobjects[j]);
@ -637,9 +648,19 @@ static tTrackSeg *getFirstWallStart(tTrackSeg *start, int side)
return NULL;
}
// Create the left walls, start must point to a segment with a wall on the left and a leading
// non wall segment.
// FIXME: Does not work for a closed ring "by design".
static tdble distance(const t3Dd &p1, const t3Dd &p2)
{
tdble dx = p1.x - p2.x;
tdble dy = p1.y - p2.y;
tdble dz = p1.z - p2.z;
return sqrt(dx * dx + dy * dy + dz * dz);
}
// Create the walls, start must point to a segment with a wall.
//
// Solid has problems when 2 walls touch so we nolonger break up walls that have changes
// in height or width. This should not be a problem as long as cars stay on the ground.
void buildWalls(tTrackSeg *start, int side) {
if (start == NULL) {
@ -665,12 +686,8 @@ void buildWalls(tTrackSeg *start, int side) {
t3Dd evr = s->vertex[TR_ER];
static float weps = 0.01f;
// Close the start with a ploygon?
if (p == NULL || p->style != TR_WALL ||
(fabs(p->vertex[TR_EL].x - svl.x) > weps) ||
(fabs(p->vertex[TR_ER].x - svr.x) > weps) ||
(fabs(h - p->height) > weps) ||
fixedid == 0)
// Close the wall start with a ploygon?
if (p == NULL || p->style != TR_WALL || fixedid == 0)
{
// Enough space in array?
if (fixedid >= sizeof(fixedobjects)/sizeof(fixedobjects[0]))
@ -698,6 +715,13 @@ void buildWalls(tTrackSeg *start, int side) {
dtEnd();
}
// fill in hole if width changes
if (p != NULL && p->style == TR_WALL && (distance(p->vertex[TR_EL], svl) > weps || distance(p->vertex[TR_ER], svr) > weps))
{
// TODO: we can get away with not adding this polygon if the change of width
// is small but it will be a problem if the hole is bigger than a car.
}
// Build sides, left, top, right. Depending on how we want to use it we
// can remove top perhaps.
// TODO: do we want the top poly?
@ -732,10 +756,7 @@ void buildWalls(tTrackSeg *start, int side) {
}
// Close the end with a ploygon?
if (n == NULL || n->style != TR_WALL ||
(fabs(n->vertex[TR_SL].x - evl.x) > weps) ||
(fabs(n->vertex[TR_SR].x - evr.x) > weps) ||
(fabs(h - n->height) > weps))
if (n == NULL || n->style != TR_WALL)
{
if (close == true)
{
@ -754,7 +775,6 @@ void buildWalls(tTrackSeg *start, int side) {
GfError("Shape not open %s, line %d\n", __FILE__, __LINE__);
}
}
}
current = current->next;
@ -799,8 +819,7 @@ SimCarCollideInit(tTrack *track)
buildWalls(firstleft, TR_SIDE_LFT);
buildWalls(firstright, TR_SIDE_RGT);
unsigned int i;
for (i = 0; i < fixedid; i++) {
for (size_t i = 0; i < fixedid; i++) {
dtCreateObject(&fixedobjects[i], fixedobjects[i]);
dtSetObjectResponse(&fixedobjects[i], SimCarWallCollideResponse, DT_SMART_RESPONSE, &fixedobjects[i]);
}