Start of civilian ships: will follow player when close and flee in to extraction points.

data/fighters/civilian.json

@@ -0,0 +1,10 @@
+{
+	"name" : "Civilian",
+	"health" : 10,
+	"shield" : 0,
+	"speed" : 2,
+	"reloadTime" : 0,
+	"shieldRechargeRate" : 0,
+	"textureName" : "gfx/craft/civilian01.png",
+	"flags" : "EF_CIVILIAN+EF_FLEEING"
+}

data/fighters/list.json

@@ -11,5 +11,6 @@
 	"data/fighters/nymph.json",
 	"data/fighters/firefly.json",
 	"data/fighters/hyena.json",
-	"data/fighters/leopard.json"
+	"data/fighters/leopard.json",
+	"data/fighters/civilian.json"
 ]

src/battle/ai.c

@@ -46,6 +46,10 @@ static void moveToPlayer(void);
 static int canAttack(Entity *f);
 static int selectWeapon(int type);
 static void flee(void);
+static int nearExtractionPoint(void);
+static int nearEnemies(void);
+static void lookForPlayer(void);
+static void moveToExtractionPoint(void);
 
 void doAI(void)
 {
@@ -384,3 +388,68 @@ static void moveToPlayer(void)
 		applyFighterThrust();
 	}
 }
+
+/* ====== Civilian AI ======= */
+
+void doCivilianAI(void)
+{
+	if (!nearExtractionPoint() && !nearEnemies())
+	{
+		lookForPlayer();
+	}
+}
+
+static int nearExtractionPoint(void)
+{
+	Entity *e, **candidates;
+	int i;
+	
+	candidates = getAllEntsWithin(self->x - 500, self->y - 500, 1000, 1000, self);
+	i = 0;
+	
+	e = candidates[i];
+	
+	self->target = NULL;
+	
+	while (e)
+	{
+		if (e->type == ET_EXTRACTION_POINT)
+		{
+			self->target = e;
+		}
+		
+		i++;
+		
+		e = (i < MAX_GRID_CANDIDATES) ? candidates[i] : NULL;
+	}
+	
+	if (self->target != NULL)
+	{
+		self->action = moveToExtractionPoint;
+	}
+	
+	return self->target != NULL;
+}
+
+static int nearEnemies(void)
+{
+	return 0;
+}
+
+static void moveToExtractionPoint(void)
+{
+	faceTarget(self->target);
+		
+	applyFighterThrust();
+}
+
+static void lookForPlayer(void)
+{
+	if (getDistance(self->x, self->y, player->x, player->y) < 1000)
+	{
+		moveToPlayer();
+		return;
+	}
+	
+	applyFighterBrakes();
+}

src/battle/ai.h

@@ -34,6 +34,7 @@ extern float getAngle(int x1, int y1, int x2, int y2);
 extern void applyFighterThrust(void);
 extern void applyFighterBrakes(void);
 extern void addHudMessage(SDL_Color c, char *format, ...);
+extern Entity **getAllEntsWithin(int x, int y, int w, int h, Entity *ignore);
 
 extern Battle battle;
 extern Colors colors;

src/battle/extractionPoint.c

@@ -58,11 +58,17 @@ static void handleFleeingEntities(void)
 	candidates = getAllEntsWithin(self->x, self->y, self->w, self->h, self);
 	i = 0;
 	
-	for (e = candidates[i] ; (e != NULL && i < MAX_GRID_CANDIDATES) ; i++)
+	e = candidates[i];
+	
+	while (e)
 	{
 		if (e->health > 0 && e->flags & EF_FLEEING && getDistance(e->x, e->y, self->x, self->y) <= 64)
 		{
 			e->alive = ALIVE_DEAD;
 		}
+		
+		i++;
+		
+		e = (i < MAX_GRID_CANDIDATES) ? candidates[i] : NULL;
 	}
 }

src/battle/fighterDefs.c

@@ -126,6 +126,11 @@ static void loadFighterDef(char *filename)
 		f->missiles.ammo = f->missiles.maxAmmo = cJSON_GetObjectItem(node, "ammo")->valueint;
 	}
 	
+	if (cJSON_GetObjectItem(root, "flags"))
+	{
+		f->flags = flagsToLong(cJSON_GetObjectItem(root, "flags")->valuestring);
+	}
+	
 	f->separationRadius = MAX(f->w, f->h);
 	f->separationRadius *= 2;
 	

src/battle/fighterDefs.h

@@ -27,4 +27,5 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 extern char *readFile(char *filename);
 extern SDL_Texture *getTexture(char *filename);
 extern long lookup(char *name);
+extern long flagsToLong(char *flags);
 

src/battle/fighters.c

@@ -71,7 +71,15 @@ Entity *spawnFighter(char *name, int x, int y, int side)
 		randomizeDart(f);
 	}
 	
-	f->defaultAction = doAI;
+	if (f->flags & EF_CIVILIAN)
+	{
+		f->defaultAction = doCivilianAI;
+	}
+	else
+	{
+		f->defaultAction = doAI;
+	}
+	
 	f->die = die;
 	
 	return f;
@@ -271,17 +279,20 @@ static void separate(void)
 	
 	while (e)
 	{
-		distance = getDistance(e->x, e->y, self->x, self->y);
-		
-		if (distance > 0 && distance < self->separationRadius)
+		if (e->type == ET_FIGHTER)
 		{
-			angle = getAngle(self->x, self->y, e->x, e->y);
+			distance = getDistance(e->x, e->y, self->x, self->y);
 			
-			dx += sin(TO_RAIDANS(angle));
-			dy += -cos(TO_RAIDANS(angle));
-			force += (self->separationRadius - distance) * 0.005;
-			
-			count++;
+			if (distance > 0 && distance < self->separationRadius)
+			{
+				angle = getAngle(self->x, self->y, e->x, e->y);
+				
+				dx += sin(TO_RAIDANS(angle));
+				dy += -cos(TO_RAIDANS(angle));
+				force += (self->separationRadius - distance) * 0.005;
+				
+				count++;
+			}
 		}
 		
 		i++;

src/battle/fighters.h

@@ -25,6 +25,7 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 
 extern SDL_Texture *getTexture(char *filename);
 extern void doAI(void);
+extern void doCivilianAI(void);
 extern void blitRotated(SDL_Texture *t, int x, int y, int angle);
 extern void blit(SDL_Texture *t, int x, int y, int center);
 extern float getAngle(int x1, int y1, int x2, int y2);

src/defs.h

@@ -66,6 +66,7 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 #define EF_FLEES			(2 << 4)
 #define EF_FLEEING			(2 << 5)
 #define EF_NO_MT_BOX		(2 << 6)
+#define EF_CIVILIAN			(2 << 7)
 
 enum
 {

src/system/lookup.c

@@ -38,6 +38,8 @@ void initLookups(void)
 	addLookup("EF_IMMORTAL", EF_IMMORTAL);
 	addLookup("EF_MISSION_TARGET", EF_MISSION_TARGET);
 	addLookup("EF_FLEES", EF_FLEES);
+	addLookup("EF_FLEEING", EF_FLEEING);
+	addLookup("EF_CIVILIAN", EF_CIVILIAN);
 	
 	addLookup("TT_DESTROY", TT_DESTROY);
 	addLookup("TT_DISABLE", TT_DISABLE);