raze/source/exhumed/src/ra.cpp

#include "ra.h"
#include "runlist.h"
#include "engine.h"
#include "exhumed.h"
#include "player.h"
#include "move.h"
#include "sequence.h"
#include "input.h"
#include "gun.h"
#include "bullet.h"
#include <string.h>

/* bjd - the content of the ra.* files originally resided in gun.c I think... */

//#define kMaxRA		8

RA Ra[kMaxPlayers]; // one Ra for each player
short RaCount;

static actionSeq ActionSeq[] = {
	{2, 1}, {0, 0}, {1, 0}, {2, 0}
};

void FreeRa(short nPlayer)
{
	int nRun = Ra[nPlayer].field_4;
	int nSprite = Ra[nPlayer].nSprite;

	runlist_SubRunRec(nRun);
	runlist_DoSubRunRec(sprite[nSprite].owner);
	runlist_FreeRun(sprite[nSprite].lotag - 1);

	mydeletesprite(nSprite);
}

int BuildRa(short nPlayer)
{
	short nPlayerSprite = PlayerList[nPlayer].nSprite;

	int nSprite = insertsprite(sprite[nPlayerSprite].sectnum, 203);

	sprite[nSprite].cstat = 0x8000;
	sprite[nSprite].xvel = 0;
	sprite[nSprite].yvel = 0;
	sprite[nSprite].zvel = 0;
	sprite[nSprite].extra = -1;
	sprite[nSprite].lotag = runlist_HeadRun() + 1;
	sprite[nSprite].hitag = 0;
	sprite[nSprite].owner = runlist_AddRunRec(sprite[nSprite].lotag - 1, nPlayer | 0x210000);
	sprite[nSprite].pal = 1;
	sprite[nSprite].xrepeat = 64;
	sprite[nSprite].yrepeat = 64;
	sprite[nSprite].x = sprite[nPlayerSprite].x;
	sprite[nSprite].y = sprite[nPlayerSprite].y;
	sprite[nSprite].z = sprite[nPlayerSprite].z;

//	GrabTimeSlot(3);

	Ra[nPlayer].nSprite = nSprite;

	Ra[nPlayer].field_4 = runlist_AddRunRec(NewRun, nPlayer | 0x210000);
	Ra[nPlayer].nTarget = -1;
	Ra[nPlayer].field_2 = 0;
	Ra[nPlayer].field_0 = 0;
	Ra[nPlayer].field_C = 0;
	Ra[nPlayer].field_E = nPlayer;

	return nPlayer | 0x210000;
}

void InitRa()
{
	RaCount = 0;
	memset(Ra, 0, sizeof(RA) * kMaxPlayers);
}

void MoveRaToEnemy(short nPlayer)
{
	short nTarget = Ra[nPlayer].nTarget;
	short nSprite = Ra[nPlayer].nSprite;
	short field_0 = Ra[nPlayer].field_0;

	if (nTarget != -1)
	{
		if (!(sprite[nTarget].cstat & 0x101) || sprite[nTarget].sectnum == kMaxSectors)
		{
			Ra[nPlayer].nTarget = -1;
			if (!field_0 || field_0 == 3) {
				return;
			}

			Ra[nPlayer].field_0 = 3;
			Ra[nPlayer].field_2 = 0;
			return;
		}
		else
		{
			if (sprite[nSprite].sectnum != sprite[nTarget].sectnum) {
				mychangespritesect(nSprite, sprite[nTarget].sectnum);
			}
		}
	}
	else
	{
		if (field_0 == 1 || field_0 == 2)
		{
			Ra[nPlayer].field_0 = 3;
			Ra[nPlayer].field_2 = 0;
			return;
		}

		if (field_0) {
			return;
		}

		sprite[nSprite].cstat = 0x8000;
		nTarget = PlayerList[nPlayer].nSprite;
	}

	sprite[nSprite].x = sprite[nTarget].x;
	sprite[nSprite].y = sprite[nTarget].y;
	sprite[nSprite].z = sprite[nTarget].z - GetSpriteHeight(nTarget);

	if (sprite[nSprite].sectnum != sprite[nTarget].sectnum) {
		mychangespritesect(nSprite, sprite[nTarget].sectnum);
	}
}

void FuncRa(int a, int nDamage, int nRun)
{
	short nPlayer = RunData[nRun].nVal;
	short nCurrentWeapon = PlayerList[nPlayer].nCurrentWeapon;

	int var_14 = 0;

	short edx = SeqOffsets[kSeqEyeHit] + ActionSeq[Ra[nPlayer].field_0].a;
	short nSprite = Ra[nPlayer].nSprite;

	int nMessage = a & 0x7F0000;

	switch (nMessage)
	{
		default:
		{
			DebugOut("unknown msg %d for Ra\n", a & 0x7F0000);
			return;
		}

		case 0x30000:
		case 0xA0000:
			return;

		case 0x20000:
		{
			Ra[nPlayer].nTarget = sPlayerInput[nPlayer].nTarget;
			sprite[nSprite].picnum = seq_GetSeqPicnum2(edx, Ra[nPlayer].field_2);

			if (Ra[nPlayer].field_0)
			{
				seq_MoveSequence(nSprite, edx, Ra[nPlayer].field_2);
				
				Ra[nPlayer].field_2++;
				if (Ra[nPlayer].field_2 >= SeqSize[edx])
				{
					Ra[nPlayer].field_2 = 0;
					var_14 = 1;
				}
			}

			switch (Ra[nPlayer].field_0)
			{
				case 0:
				{
					MoveRaToEnemy(nPlayer);

					if (!Ra[nPlayer].field_C || Ra[nPlayer].nTarget <= -1)
					{
						sprite[nSprite].cstat = 0x8000;
					}
					else
					{
						sprite[nSprite].cstat &= 0x7FFF;
						Ra[nPlayer].field_0 = 1;
						Ra[nPlayer].field_2 = 0;
					}

					return;
				}

				case 1:
				{
					if (!Ra[nPlayer].field_C)
					{
						Ra[nPlayer].field_0 = 3;
						Ra[nPlayer].field_2 = 0;
					}
					else
					{
						if (var_14) {
							Ra[nPlayer].field_0 = 2;
						}

						MoveRaToEnemy(nPlayer);
					}

					return;
				}

				case 2:
				{
					MoveRaToEnemy(nPlayer);

					if (nCurrentWeapon != kWeaponRing)
					{
						Ra[nPlayer].field_0 = 3;
						Ra[nPlayer].field_2 = 0;
					}
					else
					{
						if (Ra[nPlayer].field_2 || Ra[nPlayer].nTarget <= -1)
						{
							if (!var_14) {
								return;
							}

							Ra[nPlayer].field_0 = 3;
							Ra[nPlayer].field_2 = 0;
						}
						else
						{
							if (PlayerList[nPlayer].nAmmo[kWeaponRing] > 0)
							{
								runlist_DamageEnemy(Ra[nPlayer].nTarget, PlayerList[Ra[nPlayer].field_E].nSprite, BulletInfo[kWeaponRing].nDamage);
								AddAmmo(nPlayer, kWeaponRing, -WeaponInfo[kWeaponRing].d);
								SetQuake(nSprite, 100);
							}
							else
							{
								Ra[nPlayer].field_0 = 3;
								Ra[nPlayer].field_2 = 0;
								SelectNewWeapon(nPlayer);
							}
						}
					}

					return;
				}

				case 3:
				{
					if (var_14)
					{
						sprite[nSprite].cstat |= 0x8000;
						Ra[nPlayer].field_0 = 0;
						Ra[nPlayer].field_2 = 0;
						Ra[nPlayer].field_C = 0;
					}

					return;
				}

				default:
					return;
			}
		}

		case 0x90000:
		{
			short nSprite2 = a & 0xFFFF;
			seq_PlotSequence(nSprite2, edx, Ra[nPlayer].field_2, 1);
			tsprite[nSprite2].owner = -1;
			return;
		}
	}
}