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+/*
+ * Copyright © 2022 Michael Smith <mikesmiffy128@gmail.com>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED “AS IS” AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+ * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+ * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+ * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+ * OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#define _USE_MATH_DEFINES // ... windows.
+#include <math.h>
+#include <stdbool.h>
+
+#include "con_.h"
+#include "engineapi.h"
+#include "ent.h"
+#include "gamedata.h"
+#include "gametype.h"
+#include "intdefs.h"
+#include "mem.h"
+#include "vcall.h"
+
+DECL_VFUNC_DYN(void *, GetBaseEntity)
+DECL_VFUNC_DYN(void, Teleport, const struct vec3f *pos, const struct vec3f *ang,
+ const struct vec3f *vel)
+
+DEF_CCMD_HERE_UNREG(sst_l4d_testwarp, "Simulate a bot warping to you",
+ CON_SERVERSIDE) {
+ struct edict *ed = ent_getedict(con_cmdclient + 1);
+ if (!ed) { con_warn("error: couldn't access player entity\n"); return; }
+ void *e = VCALL(ed->ent_unknown, GetBaseEntity); // is this call required?
+ struct vec3f *org = mem_offset(e, off_entpos);
+ struct vec3f *ang = mem_offset(e, off_eyeang);
+ // L4D idle warps go up to 10 units behind relative to whatever angle the
+ // player is facing, lessening the distance based on pitch angle but never
+ // displacing vertically
+ float pitch = ang->x * M_PI / 180, yaw = ang->y * M_PI / 180;
+ float shift = -10 * cos(pitch);
+ VCALL(e, Teleport, &(struct vec3f){org->x + shift * cos(yaw),
+ org->y + shift * sin(yaw), org->z}, 0, &(struct vec3f){0, 0, 0});
+}
+
+bool l4dwarp_init(void) {
+ if (!GAMETYPE_MATCHES(L4Dx)) return false;
+ if (!has_off_entpos || !has_off_eyeang || !has_vtidx_Teleport) {
+ con_warn("l4dwarp: missing gamedata entries for this engine\n");
+ return false;
+ }
+ con_reg(sst_l4d_testwarp);
+ return true;
+}
+
+// vi: sw=4 ts=4 noet tw=80 cc=80