Start of mines.

common.mk

@@ -19,7 +19,7 @@ OBJS += hud.o
 OBJS += i18n.o init.o input.o io.o items.o
 OBJS += jumpgate.o
 OBJS += load.o locations.o lookup.o
-OBJS += main.o messageBox.o mission.o missionInfo.o modalDialog.o
+OBJS += main.o messageBox.o mine.o mission.o missionInfo.o modalDialog.o
 OBJS += objectives.o options.o
 OBJS += player.o
 OBJS += quadtree.o

src/battle/effects.c

@@ -284,6 +284,36 @@ void addSmallExplosion(void)
 	}
 }
 
+void addMineExplosion(void)
+{
+	int i;
+	Effect *e;
+
+	for (i = 0 ; i < 16 ; i++)
+	{
+		e = malloc(sizeof(Effect));
+		memset(e, 0, sizeof(Effect));
+		battle.effectTail->next = e;
+		battle.effectTail = e;
+
+		e->type = EFFECT_TEXTURE;
+
+		e->x = self->x + rand() % 16 - rand() % 16;
+		e->y = self->y + rand() % 16 - rand() % 16;
+		e->texture = explosionTexture;
+		e->size = 32 + (rand() % 32);
+		e->r = 255;
+
+		setRandomFlameHue(e);
+
+		e->a = 32 + (rand() % 192);
+		e->health = e->a;
+
+		e->x -= e->size / 2;
+		e->y -= e->size / 2;
+	}
+}
+
 void addLargeExplosion(void)
 {
 	int i;

src/battle/mine.c

@@ -0,0 +1,66 @@
+/*
+Copyright (C) 2015-2016 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 "mine.h"
+
+static void think(void);
+static void lookForFighters(void);
+
+Entity *spawnMine(void)
+{
+	Entity *mine = spawnEntity();
+
+	mine->type = ET_MINE;
+	mine->health = mine->maxHealth = 1;
+	mine->texture = getTexture("gfx/entities/mine.png");
+	mine->action = think;
+
+	return mine;
+}
+
+static void think(void)
+{
+	self->angle += 0.1;
+	
+	if (self->angle >= 360)
+	{
+		self->angle -= 360;
+	}
+	
+	lookForFighters();
+}
+
+static void lookForFighters(void)
+{
+	Entity *e, **candidates;
+	int i;
+
+	candidates = getAllEntsWithin(self->x - (self->w / 2), self->y - (self->h / 2), self->w, self->h, self);
+
+	for (i = 0, e = candidates[i] ; e != NULL ; e = candidates[++i])
+	{
+		if (e->health > 0 && e->type == ET_FIGHTER && getDistance(self->x, self->y, e->x, e->y) <= 128)
+		{
+			self->health = 0;
+			
+			addMineExplosion();
+		}
+	}
+}

src/battle/mine.h

@@ -0,0 +1,29 @@
+/*
+Copyright (C) 2015-2016 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 "../common.h"
+
+extern Entity *spawnEntity(void);
+extern SDL_Texture *getTexture(char *filename);
+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 void addMineExplosion(void);
+
+extern Entity *self;

src/defs.h

@@ -151,6 +151,7 @@ enum
 	ET_ITEM,
 	ET_WAYPOINT,
 	ET_JUMPGATE,
+	ET_MINE,
 	ET_CAPITAL_SHIP_GUN,
 	ET_CAPITAL_SHIP_COMPONENT,
 	ET_CAPITAL_SHIP_ENGINE,

src/galaxy/mission.c

@@ -352,6 +352,10 @@ static void loadEntities(cJSON *node)
 						e = spawnJumpgate();
 						break;
 						
+					case ET_MINE:
+						e = spawnMine();
+						break;
+
 					default:
 						printf("Error: Unhandled entity type: %s\n", cJSON_GetObjectItem(node, "type")->valuestring);
 						exit(1);

src/galaxy/mission.h

@@ -57,6 +57,7 @@ extern void loadFighters(cJSON *node);
 extern void loadItems(cJSON *node);
 extern void loadLocations(cJSON *node);
 extern void loadSpawners(cJSON *node);
+extern Entity *spawnMine(void);
 
 extern Battle battle;
 extern Dev dev;

src/system/lookup.c

@@ -45,6 +45,7 @@ void initLookups(void)
 	addLookup("ET_WAYPOINT", ET_WAYPOINT);
 	addLookup("ET_JUMPGATE", ET_JUMPGATE);
 	addLookup("ET_CAPITAL_SHIP", ET_CAPITAL_SHIP);
+	addLookup("ET_MINE", ET_MINE);
 
 	addLookup("EF_NO_KILL", EF_NO_KILL);
 	addLookup("EF_DISABLED", EF_DISABLED);