The Depth Charge Weapon

philip profile | email

posted 11-20-98 11:43 AM CT (US) Title: The Depth Charge Weapon Difficulty: Moderate By: Philip (aka Maj.Bitch) Email: peblair@gv.net Date: 11-14-98 Note: Please give credit where credit is due. ====================================================== You've heard of depth charges before, right? Those are those barrel-type things that Navy Destroyers toss over the sides and they blow up at a certain depth. Well, have you ever had to deal with a camper hiding out under the water (coming up for air as needed) and railing every poor bastard who ventures into the water before they've had a chance to do anything? Well, throw in a Depth Charge!! For the cost of 5 Grenades, you toss out what looks like a barrel (standard issue Q2 model) and the barrel bounces around before coming to a stop somewhere. Now, two things are going to happen. If the barrel is NOT IN WATER, then it just explodes in 5 seconds with a small fireball and giving off the usual radius damage. If the barrel detects that it is in water then, after the 5 sec timer, the barrel explodes into 4 BFG fireballs radiating outward in the direction of the (N,S,E,W) points of the compass and another fireball blasts straight upward (GREAT for Tokay's Towers!!). The fire_bfg() is used and is standard Q2 so all the Q2 animations and damaging etc associated with the bfg are still intact. Along with the bfg fireballs, anybody else within 1000 unit radius who is in the water also, gets blown upward and a bit in their forward direction (clear out of the water)!!! So, if the bfg didn't get'em the shockwave will surely relocate them out of their watery cubby-hole! Watch other players get blown clear out of the water after your depth charge has detonated.. Okay, let's get started.. ============================================================ We need to add another MOD_* obituary flag. So, inside of your g_local.h add the MOD_DEPTHCHARGE flag as the next integer in the numerical sequence as shown by example: #define MOD_CLUSTER_BOMBS 24 // Cluster Airstrike #define MOD_ZYLON_GAS 25 // Gas Grenade #define MOD_RAILSTRIKE 26 // BFG Nuke Airstrike #define MOD_BFG_NUKE 27 // Railgun Airstrike #define MOD_DECOY 28 // Decoy Blast #define MOD_LASERDRONE 29 // LaserDrone Weapon #define MOD_DEPTHCHARGE 30 // NEW FLAG HERE ============================================================ Okay, let's make some obituaries for your gameplay. Find your ClientObituary() function in your p_client.c file and add the following: ---------- FIND THESE LINES HERE ------------- case MOD_TARGET_BLASTER: message="got blasted"; break; ------------ ADD THESE LINES HERE ------------ case MOD_DEPTHCHARGE: message="got obliterated"; break; Further down in this same function: -------------- FIND THESE LINES ----------- case MOD_G_SPLASH: if (IsFemale(victim)) message="tripped on her own grenade"; else message="tripped on his own grenade"; break; ----------- ADD THESE LINES HERE ------------- case MOD_DEPTHCHARGE: message="got depth charged"; break; Still further down in this same function: ---------- FIND THESE LINES HERE ------------- case MOD_TELEFRAG: message="tried to invade"; message2="'s personal space"; break; --------- ADD THESE LINES HERE --------------- case MOD_DEPTHCHARGE: message="was killed by"; message2="'s depth charge"; break; Remember: You should feel free to change these client obituaries to whatever you think is more appropriate for your particular mod.. ============================================================ ============================================================ ============================================================ Open up your g_cmds.c file and go near the bottom of your ClientCommand() function and add the following as shown by example.. ---------- IF-ELSE STATEMENTS -------- else if (Q_stricmp(cmd, "decoy") == 0 ) SP_Decoy(ent); else if (Q_stricmp(cmd, "drone") == 0 ) Cmd_LaserDrone_f(ent); else if (Q_stricmp(cmd, "teleport") == 0) Cmd_Teleport_f(ent); ----------- ADD THESE LINES ------ else if (Q_stricmp(cmd, "dcharge") == 0) Cmd_DepthCharge_f(ent); else if ..... This will shoot out a Depth Charged with a single stroke of the player's aliased key. ============================================================ Also, near the top of you g_cmds.c file add this forward declaration: void Cmd_DepthCharge_f(edict_t *ent); ============================================================ Lets open you g_weapons.c file and add these helper routines and the source code somewhere near the top of the file. NOTE: I've used these helper routines in many of my previous tutorials so you may already have them someplace in your source. If you already do have them, then you don't need them anymore. Your compiler should warn you that you've already got these functions previously defined.. Okay, add the following text to the top of your g_weapons.c file. ------------------ START HERE ------------------------ //====================================================== // True if start and end are within radius distance. //====================================================== qboolean G_Within_Radius(vec3_t start, vec3_t end, float rad) { vec3_t eorg={0,0,0}; int j; for (j=0; j<3; j++)> eorg[j]=abs(start[j]-end[j]); return (VectorLength(eorg) < rad); } //====================================================== // True if Ent is valid, has client, and edict_t inuse. //====================================================== qboolean G_EntExists(edict_t *ent) { return ((ent) && (ent->client) && (ent->inuse)); } //====================================================== // True if ent is not DEAD or DEAD or DEAD (and BURIED!) //====================================================== qboolean G_ClientNotDead(edict_t *ent) { qboolean b1=ent->client->ps.pmove.pm_type!=PM_DEAD; qboolean b2=ent->deadflag != DEAD_DEAD; qboolean b3=ent->health > 0; return (b3 || b2 || b1); } //====================================================== // True if ent is not DEAD and not just did a Respawn. //====================================================== qboolean G_ClientInGame(edict_t *ent) { if (!G_EntExists(ent)) return false; if (!G_ClientNotDead(ent)) return false; return (ent->client->respawn_time + 5.0 < level.time); } //====================================================== //====================================================== //====================================================== /* Spawns a (type) explosion at (start} and Broadcasts to all Potentially Visible Sets from {origin} TE_BFG_BIGEXPLOSION - Spawns a BFG particle explosion TE_BFG_EXPLOSION - Spawns a BFG explosion sprite TE_BOSSTPORT - Spawns a mushroom-cloud particle effect TE_EXPLOSION1 - Spawns a mid-air-style explosion TE_EXPLOSION2 - Spawns a nuclear-style explosion TE_GRENADE_EXPLOSION - Spawns a grenade explosion TE_GRENADE_EXPLOSION_WATER - Spawns an underwater grenade explosion TE_ROCKET_EXPLOSION - Spawns a rocket explosion TE_ROCKET_EXPLOSION_WATER - Spawns an underwater rocket explosion Note: The last four EXPLOSION entries overlap to some degree. TE_GRENADE_EXPLOSION is the same as TE_EXPLOSION2, TE_ROCKET_EXPLOSION is the same as TE_EXPLOSION1, and both of the EXPLOSION_WATER entries are the same, visually. */ //====================================================== void G_Spawn_Explosion(int type, vec3_t start, vec3_t origin ) { gi.WriteByte(svc_temp_entity); gi.WriteByte(type); gi.WritePosition(start); gi.multicast(origin, MULTICAST_PVS); } //====================================================== //============== DEPTHCHARGE ROUTINES ================== //====================================================== #define ITEM_IN_ENTS_INVENTORY ent->client->pers.inventory[index] //====================================================== void DepthCharge_Shockwave(edict_t *dcharge) { edict_t *ent=NULL; vec3_t forward,right,up; int i; // Blow backward ALL ents IN WATER within 1000 units... for(i=0;i < game.maxclients;i++) { ent=g_edicts+i+1; if (!G_ClientInGame(ent)) continue; if (ent==dcharge) continue; if (!G_Within_Radius(dcharge->s.origin, ent->s.origin, 1000)) continue; if (!(gi.pointcontents(ent->s.origin) & CONTENTS_WATER)) continue; AngleVectors(ent->s.angles, forward, right, up); VectorMA(ent->velocity, 200, forward, ent->velocity); VectorMA(ent->velocity, 2000, up, ent->velocity); } // end for } //====================================================== void D_Dummy_Touch(edict_t *a, edict_t *b, cplane_t *c, csurface_t *d) {} //====================================================== void Secondary_Explosion(edict_t *dcharge) { vec3_t forward,backward,right,left,up; VectorSet(up,0,0,1); VectorSet(forward,0,1,0); VectorSet(right,1,0,0); VectorSet(backward,0,-1,0); VectorSet(left,-1,0,0); // Fire BFG fireball with dmg=200; speed=400; radius=1000!! fire_bfg(dcharge->activator, dcharge->s.origin, up, 200, 400, 1000); fire_bfg(dcharge->activator, dcharge->s.origin, forward, 200, 400, 1000); fire_bfg(dcharge->activator, dcharge->s.origin, right, 200, 400, 1000); fire_bfg(dcharge->activator, dcharge->s.origin, backward, 200, 400, 1000); fire_bfg(dcharge->activator, dcharge->s.origin, left, 200, 400, 1000); // Create a big shockwave DepthCharge_Shockwave(dcharge); G_FreeEdict(dcharge); } //====================================================== void Primary_Explosion(edict_t *dcharge) { // Not touchable until stopped moving. if ((VectorLength(dcharge->velocity) > 1) || (level.time < dcharge->delay)) { dcharge->nextthink = level.time + 5.0; return; } // If in water then big secondary explosion!! if (gi.pointcontents(dcharge->s.origin) & CONTENTS_WATER) { dcharge->think=Secondary_Explosion; dcharge->nextthink = level.time + 1.0; } else { // Else, small explosion G_Spawn_Explosion(TE_EXPLOSION2, dcharge->s.origin, dcharge->s.origin); T_RadiusDamage(dcharge, dcharge->activator, 40, NULL, 300, MOD_DEPTHCHARGE); G_FreeEdict(dcharge); } } //====================================================== void Spawn_DepthCharge(edict_t *ent) { edict_t *dcharge=NULL; vec3_t torigin; vec3_t forward=(0,0,0); vec3_t right=(0,0,0); vec3_t up=(0,0,0); gitem_t *item=NULL; VectorCopy(ent->s.origin,torigin); AngleVectors(ent->client->v_angle, forward, right, up); VectorMA(torigin, 50, forward, torigin); if (gi.pointcontents(torigin) & MASK_SHOT) { gi.cprintf(ent,PRINT_HIGH,"Cannot project into Solid!\n"); return; } dcharge = G_Spawn(); dcharge->owner=NULL; dcharge->activator=ent; dcharge->movetype=MOVETYPE_BOUNCE; dcharge->solid = SOLID_BBOX; dcharge->s.renderfx = NONE; VectorCopy(up, dcharge->s.angles); dcharge->s.effects = EF_NONE; VectorSet(dcharge->mins, -10, -10, 0); VectorSet(dcharge->maxs, 10, 20, 30); VectorClear(dcharge->velocity); VectorScale(forward, 600, dcharge->velocity); VectorMA(dcharge->velocity, 200+crandom()*10.0, up, dcharge->velocity); VectorMA(dcharge->velocity, crandom()*10.0, right, dcharge->velocity); VectorClear(dcharge->avelocity); VectorCopy(torigin,dcharge->s.origin); dcharge->model = "models/objects/barrels/tris.md2"; gi.setmodel(dcharge, dcharge->model); dcharge->delay=5.0; dcharge->touch=D_Dummy_Touch; dcharge->think=Primary_Explosion; dcharge->nextthink = level.time + 1.0; gi.linkentity(dcharge); } //====================================================== // Pay the Piper for the Depth Charge //====================================================== void Cmd_DepthCharge_f(edict_t *ent) { int index; // Don't allow dead/respawning players to launch Depth Charges! if (!G_ClientInGame(ent)) return; index = ITEM_INDEX(FindItem("grenades")); if (ITEM_IN_ENTS_INVENTORY < 5){ gi.centerprintf(ent, "Depth Charge costs 5 grenades!\n"); return; } else { ITEM_IN_ENTS_INVENTORY -= 5; Spawn_DepthCharge(ent); } } =============================================================== Lastly.. Be sure to add the following to your Autoexec.cfg file as shown by example.. bind d "dcharge" That's it!! Now go KILL ALL THOSE BASTARDS! Have Fun!! philip