/** Objects need to be moved back on a failed push, otherwise riders would continue to slide. */
public static boolean SV_Push(edict_t pusher, float[] move, float[] amove) {
int i, e;
edict_t check, block[];
float[] mins = {0, 0, 0};
float[] maxs = {0, 0, 0};
pushed_t p;
float[] org = {0, 0, 0};
float[] org2 = {0, 0, 0};
float[] move2 = {0, 0, 0};
float[] forward = {0, 0, 0};
float[] right = {0, 0, 0};
float[] up = {0, 0, 0};
// clamp the move to 1/8 units, so the position will
// be accurate for client side prediction
for (i = 0; i < 3; i++) {
float temp;
temp = move[i] * 8.0f;
if (temp > 0.0) temp += 0.5;
else temp -= 0.5;
move[i] = 0.125f * (int) temp;
}
// find the bounding box
for (i = 0; i < 3; i++) {
mins[i] = pusher.absmin[i] + move[i];
maxs[i] = pusher.absmax[i] + move[i];
}
// we need this for pushing things later
Math3D.VectorSubtract(Globals.vec3_origin, amove, org);
Math3D.AngleVectors(org, forward, right, up);
// save the pusher's original position
GameBase.pushed[GameBase.pushed_p].ent = pusher;
Math3D.VectorCopy(pusher.s.origin, GameBase.pushed[GameBase.pushed_p].origin);
Math3D.VectorCopy(pusher.s.angles, GameBase.pushed[GameBase.pushed_p].angles);
if (pusher.client != null)
GameBase.pushed[GameBase.pushed_p].deltayaw =
pusher.client.ps.pmove.delta_angles[Defines.YAW];
GameBase.pushed_p++;
// move the pusher to it's final position
Math3D.VectorAdd(pusher.s.origin, move, pusher.s.origin);
Math3D.VectorAdd(pusher.s.angles, amove, pusher.s.angles);
GameBase.gi.linkentity(pusher);
// see if any solid entities are inside the final position
// check= g_edicts + 1;
for (e = 1; e < GameBase.num_edicts; e++) {
check = GameBase.g_edicts[e];
if (!check.inuse) continue;
if (check.movetype == Defines.MOVETYPE_PUSH
|| check.movetype == Defines.MOVETYPE_STOP
|| check.movetype == Defines.MOVETYPE_NONE
|| check.movetype == Defines.MOVETYPE_NOCLIP) continue;
if (check.area.prev == null) continue; // not linked in anywhere
// if the entity is standing on the pusher, it will definitely be
// moved
if (check.groundentity != pusher) {
// see if the ent needs to be tested
if (check.absmin[0] >= maxs[0]
|| check.absmin[1] >= maxs[1]
|| check.absmin[2] >= maxs[2]
|| check.absmax[0] <= mins[0]
|| check.absmax[1] <= mins[1]
|| check.absmax[2] <= mins[2]) continue;
// see if the ent's bbox is inside the pusher's final position
if (SV_TestEntityPosition(check) == null) continue;
}
if ((pusher.movetype == Defines.MOVETYPE_PUSH) || (check.groundentity == pusher)) {
// move this entity
GameBase.pushed[GameBase.pushed_p].ent = check;
Math3D.VectorCopy(check.s.origin, GameBase.pushed[GameBase.pushed_p].origin);
Math3D.VectorCopy(check.s.angles, GameBase.pushed[GameBase.pushed_p].angles);
GameBase.pushed_p++;
// try moving the contacted entity
Math3D.VectorAdd(check.s.origin, move, check.s.origin);
if (check.client != null) { // FIXME: doesn't rotate monsters?
check.client.ps.pmove.delta_angles[Defines.YAW] += amove[Defines.YAW];
}
// figure movement due to the pusher's amove
Math3D.VectorSubtract(check.s.origin, pusher.s.origin, org);
org2[0] = Math3D.DotProduct(org, forward);
org2[1] = -Math3D.DotProduct(org, right);
org2[2] = Math3D.DotProduct(org, up);
Math3D.VectorSubtract(org2, org, move2);
Math3D.VectorAdd(check.s.origin, move2, check.s.origin);
// may have pushed them off an edge
if (check.groundentity != pusher) check.groundentity = null;
block = SV_TestEntityPosition(check);
if (block == null) { // pushed ok
GameBase.gi.linkentity(check);
// impact?
continue;
}
// if it is ok to leave in the old position, do it
// this is only relevent for riding entities, not pushed
// FIXME: this doesn't acount for rotation
Math3D.VectorSubtract(check.s.origin, move, check.s.origin);
block = SV_TestEntityPosition(check);
if (block == null) {
GameBase.pushed_p--;
continue;
}
}
// save off the obstacle so we can call the block function
GameBase.obstacle = check;
// move back any entities we already moved
// go backwards, so if the same entity was pushed
// twice, it goes back to the original position
for (int ip = GameBase.pushed_p - 1; ip >= 0; ip--) {
p = GameBase.pushed[ip];
Math3D.VectorCopy(p.origin, p.ent.s.origin);
Math3D.VectorCopy(p.angles, p.ent.s.angles);
if (p.ent.client != null) {
p.ent.client.ps.pmove.delta_angles[Defines.YAW] = (short) p.deltayaw;
}
GameBase.gi.linkentity(p.ent);
}
return false;
}
// FIXME: is there a better way to handle this?
// see if anything we moved has touched a trigger
for (int ip = GameBase.pushed_p - 1; ip >= 0; ip--)
GameBase.G_TouchTriggers(GameBase.pushed[ip].ent);
return true;
}
