/**
* Kill a unit. When it was a saboteur, expect a big explosion.
*
* Stack: *none*.
*
* @param script The script engine to operate on.
* @return The value 0. Always.
*/
uint16 Script_Unit_Die(ScriptEngine *script)
{
const UnitInfo *ui;
Unit *u;
VARIABLE_NOT_USED(script);
u = g_scriptCurrentUnit;
ui = &g_table_unitInfo[u->o.type];
Unit_Remove(u);
if (ui->movementType != MOVEMENT_WINGER) {
uint16 credits;
credits = max(ui->o.buildCredits / 100, 1);
if (u->o.houseID == g_playerHouseID) {
g_scenario.killedAllied++;
g_scenario.score -= credits;
} else {
g_scenario.killedEnemy++;
g_scenario.score += credits;
}
}
Unit_HouseUnitCount_Remove(u);
if (u->o.type != UNIT_SABOTEUR) return 0;
Map_MakeExplosion(EXPLOSION_SABOTEUR_DEATH, u->o.position, 300, 0);
return 0;
}
/**
* Make an explosion at the coordinates of the unit.
* It does damage to the surrounding units based on the unit.
*
* Stack: 1 - Explosion type
*
* @param script The script engine to operate on.
* @return The value 0. Always.
*/
uint16 Script_Unit_ExplosionSingle(ScriptEngine *script)
{
Unit *u;
u = g_scriptCurrentUnit;
Map_MakeExplosion(STACK_PEEK(1), u->o.position, g_table_unitInfo[u->o.type].o.hitpoints, Tools_Index_Encode(u->o.index, IT_UNIT));
return 0;
}
/**
* Make the structure explode.
*
* Stack: *none*
*
* @param script The script engine to operate on.
* @return unknown.
*/
uint16 Script_Structure_Explode(ScriptEngine *script)
{
Structure *s;
uint16 position;
uint16 layout;
uint16 i;
VARIABLE_NOT_USED(script);
s = g_scriptCurrentStructure;
layout = g_table_structureInfo[s->o.type].layout;
position = Tile_PackTile(s->o.position);
for (i = 0; i < g_table_structure_layoutTileCount[layout]; i++) {
tile32 tile;
tile = Tile_UnpackTile(position + g_table_structure_layoutTiles[layout][i]);
Map_MakeExplosion(EXPLOSION_STRUCTURE, tile, 0, 0);
}
return 0;
}
/**
* Makes the current unit fire a bullet (or eat its target).
*
* Stack: *none*.
*
* @param script The script engine to operate on.
* @return The value 1 if the current unit fired/eat, 0 otherwise.
*/
uint16 Script_Unit_Fire(ScriptEngine *script)
{
const UnitInfo *ui;
Unit *u;
uint16 target;
UnitType typeID;
uint16 distance;
bool fireTwice;
uint16 damage;
u = g_scriptCurrentUnit;
target = u->targetAttack;
if (target == 0 || !Tools_Index_IsValid(target)) return 0;
if (u->o.type != UNIT_SANDWORM && target == Tools_Index_Encode(Tile_PackTile(u->o.position), IT_TILE)) u->targetAttack = 0;
if (u->targetAttack != target) {
Unit_SetTarget(u, target);
return 0;
}
ui = &g_table_unitInfo[u->o.type];
if (u->o.type != UNIT_SANDWORM && u->orientation[ui->o.flags.hasTurret ? 1 : 0].speed != 0) return 0;
if (Tools_Index_GetType(target) == IT_TILE && Object_GetByPackedTile(Tools_Index_GetPackedTile(target)) != NULL) Unit_SetTarget(u, target);
if (u->fireDelay != 0) return 0;
distance = Object_GetDistanceToEncoded(&u->o, target);
if ((int16)(ui->fireDistance << 8) < (int16)distance) return 0;
if (u->o.type != UNIT_SANDWORM && (Tools_Index_GetType(target) != IT_UNIT || g_table_unitInfo[Tools_Index_GetUnit(target)->o.type].movementType != MOVEMENT_WINGER)) {
int16 diff = 0;
int8 orientation;
orientation = Tile_GetDirection(u->o.position, Tools_Index_GetTile(target));
diff = abs(u->orientation[ui->o.flags.hasTurret ? 1 : 0].current - orientation);
if (ui->movementType == MOVEMENT_WINGER) diff /= 8;
if (diff >= 8) return 0;
}
damage = ui->damage;
typeID = ui->bulletType;
fireTwice = ui->flags.firesTwice && u->o.hitpoints > ui->o.hitpoints / 2;
if ((u->o.type == UNIT_TROOPERS || u->o.type == UNIT_TROOPER) && (int16)distance > 512) typeID = UNIT_MISSILE_TROOPER;
switch (typeID) {
case UNIT_SANDWORM: {
Unit *u2;
Unit_UpdateMap(0, u);
u2 = Tools_Index_GetUnit(target);
if (u2 != NULL) {
u2->o.script.variables[1] = 0xFFFF;
Unit_RemovePlayer(u2);
Unit_HouseUnitCount_Remove(u2);
Unit_Remove(u2);
}
Map_MakeExplosion(ui->explosionType, u->o.position, 0, 0);
Voice_PlayAtTile(63, u->o.position);
Unit_UpdateMap(1, u);
u->amount--;
script->delay = 12;
if ((int8)u->amount < 1) Unit_SetAction(u, ACTION_DIE);
} break;
case UNIT_MISSILE_TROOPER:
damage -= damage / 4;
/* FALL-THROUGH */
case UNIT_MISSILE_ROCKET:
case UNIT_MISSILE_TURRET:
case UNIT_MISSILE_DEVIATOR:
case UNIT_BULLET:
case UNIT_SONIC_BLAST: {
Unit *bullet;
bullet = Unit_CreateBullet(u->o.position, typeID, Unit_GetHouseID(u), damage, target);
if (bullet == NULL) return 0;
bullet->originEncoded = Tools_Index_Encode(u->o.index, IT_UNIT);
Voice_PlayAtTile(ui->bulletSound, u->o.position);
Unit_Deviation_Decrease(u, 20);
} break;
default: break;
}
u->fireDelay = Tools_AdjustToGameSpeed(ui->fireDelay * 2, 1, 0xFFFF, true);
if (fireTwice) {
u->o.flags.s.fireTwiceFlip = !u->o.flags.s.fireTwiceFlip;
if (u->o.flags.s.fireTwiceFlip) u->fireDelay = Tools_AdjustToGameSpeed(5, 1, 10, true) & 0xFF;
} else {
u->o.flags.s.fireTwiceFlip = false;
}
u->fireDelay += Tools_Random_256() & 1;
Unit_UpdateMap(2, u);
return 1;
}