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292
scripting/rtd/homingprojectiles.sp
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292
scripting/rtd/homingprojectiles.sp
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/*
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This script is a part of RTD2 plugin and is not meant to work by itself.
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If you were to edit anything here, you'd have to recompile rtd2.sp instead of this one.
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*** HOW TO ADD A PERK ***
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A quick note: This tutorial may not be kept up to date; for an updated one, go to the plugin's thread.
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1. Set up:
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a) Have <perkname>.sp in scripting/rtd.
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b) Add it to the includes in scripting/rtd/#perks.sp.
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c) Add a new section with a correct ID (highest one +1) to the config/rtd2_perks.cfg and set its settings.
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2. Edit scripting/rtd/#manager.sp
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a) In a function named ManagePerk() add a new case to the switch() with your perk's ID.
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b) In the added case specify a function which is going to execute from <perkname>.sp with parameters:
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1) @client - the client the perk should be applied to/removed from
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2) @fSpecialPref - the optional "special" value in config/rtd2_perks.cfg
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2) @enable - to specify whether the perk should be applied/removed
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c) OPTIONAL: You can specify a function in your perk which should run at OnMapStart() in the Forward_OnMapStart() function.
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You will need it if you'd want to, for example, precache a sound or loop through existing clients.
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d) OPTIONAL: You can specify a function in your perk which should run at OnPlayerRunCmd() in the Forward_OnPlayerRunCmd() function.
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You can use it if you'd need something to run each frame or on a certain button press.
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NOTE: The forwarded client is guaranteed to be valid BUT NOT GUARANTEED IF THEY ARE ALIVE.
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3. Script your perk:
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a) Create a public function in <perkname>.sp with parameters @client, @iPref, @bool:apply as an example below
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- This is the only function used to transfer info between the core and the include
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- You don't need to include any includes that are in the rtd2.sp
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b) NOTE: If you need to transfer the iPref to a different function, set it globally but remember to use an unique name
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c) Name it AS SAME AS you named the function in the added case in the switch() in #manager.sp
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d) From there, script the functionality like there's no tomorrow
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e) You are free to use IsValidClient(). It returns false when:
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- An incorrect client index is specified
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- Client is not in game
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- Client is fake (bot)
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- Client is Coaching
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4. Compile rtd2.sp and you're good to go!
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*/
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#define HOMING_SPEED 0.5
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#define HOMING_REFLE 1.1
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#define MINICRIT TFCond_Buffed
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#define FULLCRIT TFCond_CritOnFirstBlood
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bool g_bHasHomingProjectiles[MAXPLAYERS+1] = {false, ...};
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Handle g_hArrayHoming;
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int g_iHomingCrits = 0;
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void HomingProjectiles_Start(){
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g_hArrayHoming = CreateArray(2);
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ClearArray(g_hArrayHoming);
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HookEvent("teamplay_round_start", Event_HomingProjectiles_RoundStart);
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}
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void HomingProjectiles_Perk(int client, const char[] sPref, bool apply){
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if(apply)
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HomingProjectiles_ApplyPerk(client, StringToInt(sPref));
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else
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HomingProjectiles_RemovePerk(client);
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}
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void HomingProjectiles_ApplyPerk(int client, int iPref){
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g_bHasHomingProjectiles[client] = true;
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g_iHomingCrits = iPref;
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if(g_iHomingCrits > 0)
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TF2_AddCondition(client, g_iHomingCrits < 2 ? MINICRIT : FULLCRIT);
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}
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void HomingProjectiles_RemovePerk(int client){
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g_bHasHomingProjectiles[client] = false;
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if(g_iHomingCrits > 0)
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TF2_RemoveCondition(client, g_iHomingCrits < 2 ? MINICRIT : FULLCRIT);
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}
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public Event_HomingProjectiles_RoundStart(Handle hEvent, const char[] strEventName, bool bDontBroadcast){
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ClearArray(g_hArrayHoming);
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}
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//Just copy every bit of code from the original RTD!
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void HomingProjectiles_OnEntityCreated(int iEnt, const char[] sClassname){
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if(!IsAcceptableForHoming(sClassname))
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return;
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if(!IsHomingPerkPresent())
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return;
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CreateTimer(0.2, Timer_HomingProjectiles_CheckOwnership, EntIndexToEntRef(iEnt));
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}
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public Action Timer_HomingProjectiles_CheckOwnership(Handle hTimer, any iRef){
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int iProjectile = EntRefToEntIndex(iRef);
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if(iProjectile <= MaxClients || !IsValidEntity(iProjectile))
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return Plugin_Handled;
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int iLauncher = GetEntPropEnt(iProjectile, Prop_Send, "m_hOwnerEntity");
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if(iLauncher < 1 || !IsValidClient(iLauncher) || !IsPlayerAlive(iLauncher))
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return Plugin_Handled;
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if(!g_bHasHomingProjectiles[iLauncher])
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return Plugin_Handled;
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if(GetEntProp(iProjectile, Prop_Send, "m_nForceBone") != 0)
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return Plugin_Handled;
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SetEntProp(iProjectile, Prop_Send, "m_nForceBone", 1);
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int iData[2];
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iData[0] = EntIndexToEntRef(iProjectile);
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PushArrayArray(g_hArrayHoming, iData);
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return Plugin_Handled;
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}
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void HomingProjectiles_OnGameFrame(){
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for(int i = GetArraySize(g_hArrayHoming)-1; i >= 0; i--){
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int iData[2];
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GetArrayArray(g_hArrayHoming, i, iData);
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if(iData[0] == 0){
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RemoveFromArray(g_hArrayHoming, i);
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continue;
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}
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int iProjectile = EntRefToEntIndex(iData[0]);
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if(iProjectile > MaxClients)
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HomingProjectile_Think(iProjectile, iData[0], i, iData[1]);
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else
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RemoveFromArray(g_hArrayHoming, i);
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}
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}
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public void HomingProjectile_Think(int iProjectile, int iRefProjectile, int iArrayIndex, int iCurrentTarget){
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int iTeam = GetEntProp(iProjectile, Prop_Send, "m_iTeamNum");
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if(!HomingProjectile_IsValidTarget(iCurrentTarget, iProjectile, iTeam))
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HomingProjectile_FindTarget(iProjectile, iRefProjectile, iArrayIndex);
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else
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HomingProjectile_TurnToTarget(iCurrentTarget, iProjectile);
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}
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bool HomingProjectile_IsValidTarget(int client, int iProjectile, int iTeam){
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if(client < 1 || client > MaxClients)return false;
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if(!IsClientInGame(client)) return false;
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if(!IsPlayerAlive(client)) return false;
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if(GetClientTeam(client) == iTeam) return false;
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if(TF2_IsPlayerInCondition(client, TFCond_Cloaked))
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return false;
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if(TF2_IsPlayerInCondition(client, TFCond_Disguised) && GetEntProp(client, Prop_Send, "m_nDisguiseTeam") == iTeam)
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return false;
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if(IsPlayerFriendly(client))
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return false;
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return CanEntitySeeTarget(iProjectile, client);
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}
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void HomingProjectile_FindTarget(int iProjectile, int iRefProjectile, int iArrayIndex){
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int iTeam = GetEntProp(iProjectile, Prop_Send, "m_iTeamNum");
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float fPos1[3];
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GetEntPropVector(iProjectile, Prop_Send, "m_vecOrigin", fPos1);
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int iBestTarget;
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float fBestLength = 99999.9;
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for(int i = 1; i <= MaxClients; i++){
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if(HomingProjectile_IsValidTarget(i, iProjectile, iTeam)){
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float fPos2[3];
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GetClientEyePosition(i, fPos2);
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float fDistance = GetVectorDistance(fPos1, fPos2);
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if(fDistance < fBestLength)
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{
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iBestTarget = i;
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fBestLength = fDistance;
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}
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}
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}
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if(iBestTarget >= 1 && iBestTarget <= MaxClients){
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int iData[2];
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iData[0] = iRefProjectile;
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iData[1] = iBestTarget;
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SetArrayArray(g_hArrayHoming, iArrayIndex, iData);
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HomingProjectile_TurnToTarget(iBestTarget, iProjectile);
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}else{
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int iData[2];
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iData[0] = iRefProjectile;
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iData[1] = 0;
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SetArrayArray(g_hArrayHoming, iArrayIndex, iData);
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}
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}
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void HomingProjectile_TurnToTarget(int client, int iProjectile){
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float fTargetPos[3], fRocketPos[3], fInitialVelocity[3];
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GetClientAbsOrigin(client, fTargetPos);
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GetEntPropVector(iProjectile, Prop_Send, "m_vecOrigin", fRocketPos);
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GetEntPropVector(iProjectile, Prop_Send, "m_vInitialVelocity", fInitialVelocity);
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float fSpeedInit = GetVectorLength(fInitialVelocity);
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float fSpeedBase = fSpeedInit *HOMING_SPEED;
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fTargetPos[2] += 30 +Pow(GetVectorDistance(fTargetPos, fRocketPos), 2.0) /10000;
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float fNewVec[3], fAng[3];
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SubtractVectors(fTargetPos, fRocketPos, fNewVec);
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NormalizeVector(fNewVec, fNewVec);
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GetVectorAngles(fNewVec, fAng);
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float fSpeedNew = fSpeedBase +GetEntProp(iProjectile, Prop_Send, "m_iDeflected") *fSpeedBase *HOMING_REFLE;
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ScaleVector(fNewVec, fSpeedNew);
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TeleportEntity(iProjectile, NULL_VECTOR, fAng, fNewVec);
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}
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stock bool IsAcceptableForHoming(const char[] sClassname){
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if(strcmp(sClassname, "tf_projectile_rocket") == 0
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|| strcmp(sClassname, "tf_projectile_arrow") == 0
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|| strcmp(sClassname, "tf_projectile_flare") == 0
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|| strcmp(sClassname, "tf_projectile_energy_ball") == 0
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|| strcmp(sClassname, "tf_projectile_healing_bolt") == 0)
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return true;
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return false;
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}
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stock bool IsHomingPerkPresent(){
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for(int i = 1; i <= MaxClients; i++){
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if(!IsValidClient(i))
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continue;
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if(!IsPlayerAlive(i))
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continue;
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if(g_bHasHomingProjectiles[i])
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return true;
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}
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return false;
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}
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