Start of extraction points.

makefile

@@ -20,7 +20,7 @@ OBJS += ai.o
 OBJS += battle.o bullets.o
 OBJS += challenges.o cJSON.o
 OBJS += draw.o
-OBJS += effects.o entities.o
+OBJS += effects.o entities.o extractionPoint.o
 OBJS += fighters.o fighterDefs.o
 OBJS += galacticMap.o game.o grid.o
 OBJS += hud.o

src/battle/extractionPoint.c

@@ -0,0 +1,68 @@
+/*
+Copyright (C) 2015 Parallel Realities
+
+This program is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License
+as published by the Free Software Foundation; either version 2
+of the License, or (at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+
+See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+
+*/
+
+#include "extractionPoint.h"
+
+static void think(void);
+static void handleFleeingEntities(void);
+
+Entity *spawnExtractionPoint(void)
+{
+	Entity *extractionPoint = spawnEntity();
+	
+	extractionPoint->type = ET_EXTRACTION_POINT;
+	extractionPoint->health = extractionPoint->maxHealth = FPS;
+	extractionPoint->texture = getTexture("gfx/entities/extractionPoint.png");
+	extractionPoint->flags = EF_MISSION_TARGET;
+	extractionPoint->action = think;
+	extractionPoint->flags |= EF_NO_MT_BOX;
+	
+	return extractionPoint;
+}
+
+static void think(void)
+{
+	self->thinkTime = 4;
+	
+	self->angle++;
+	if (self->angle >= 360)
+	{
+		self->angle -= 360;
+	}
+	
+	handleFleeingEntities();
+}
+
+static void handleFleeingEntities(void)
+{
+	Entity *e, **candidates;
+	int i;
+	
+	candidates = getAllEntsWithin(self->x, self->y, self->w, self->h, self);
+	i = 0;
+	
+	for (e = candidates[i] ; (e != NULL && i < MAX_GRID_CANDIDATES) ; i++)
+	{
+		if (e->health > 0 && e->flags & EF_FLEEING && getDistance(e->x, e->y, self->x, self->y) <= 64)
+		{
+			e->alive = ALIVE_DEAD;
+		}
+	}
+}

src/battle/extractionPoint.h

@@ -0,0 +1,31 @@
+/*
+Copyright (C) 2015 Parallel Realities
+
+This program is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License
+as published by the Free Software Foundation; either version 2
+of the License, or (at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+
+See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+
+*/
+
+#include "SDL2/SDL.h"
+
+#include "../defs.h"
+#include "../structs.h"
+
+extern SDL_Texture *getTexture(char *filename);
+extern Entity *spawnEntity(void);
+extern Entity **getAllEntsWithin(int x, int y, int w, int h, Entity *ignore);
+extern int getDistance(int x1, int y1, int x2, int y2);
+
+extern Entity *self;

src/defs.h

@@ -65,11 +65,13 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 #define EF_MISSION_TARGET	(2 << 3)
 #define EF_FLEES			(2 << 4)
 #define EF_FLEEING			(2 << 5)
+#define EF_NO_MT_BOX		(2 << 6)
 
 enum
 {
 	ET_FIGHTER,
-	ET_WAYPOINT
+	ET_WAYPOINT,
+	ET_EXTRACTION_POINT
 };
 
 enum

src/galaxy/mission.c

@@ -312,6 +312,10 @@ static void loadEntities(cJSON *node)
 				case ET_WAYPOINT:
 					e = spawnWaypoint();
 					break;
+					
+				case ET_EXTRACTION_POINT:
+					e = spawnExtractionPoint();
+					break;
 			}
 			
 			if (cJSON_GetObjectItem(node, "name"))

src/galaxy/mission.h

@@ -38,6 +38,7 @@ extern long flagsToLong(char *flags);
 extern Entity *spawnWaypoint(void);
 extern void activateNextWaypoint(void);
 extern void selectWidget(const char *name, const char *group);
+extern Entity *spawnExtractionPoint(void);
 
 extern Battle battle;
 extern Entity *player;

src/system/lookup.c

@@ -31,6 +31,7 @@ void initLookups(void)
 	tail = &head;
 	
 	addLookup("ET_WAYPOINT", ET_WAYPOINT);
+	addLookup("ET_EXTRACTION_POINT", ET_EXTRACTION_POINT);
 	
 	addLookup("EF_NO_KILL", EF_NO_KILL);
 	addLookup("EF_DISABLE", EF_DISABLE);