Start of items.

data/battle/items.json

@@ -0,0 +1,6 @@
+[
+	{
+		"name" : "Smile",
+		"textureName" : "gfx/items/smile.png"
+	}
+]

makefile

@@ -25,7 +25,7 @@ OBJS += effects.o entities.o extractionPoint.o
 OBJS += fighters.o fighterDefs.o
 OBJS += galacticMap.o game.o grid.o
 OBJS += hud.o
-OBJS += init.o io.o
+OBJS += init.o io.o items.o
 OBJS += load.o lookup.o
 OBJS += main.o mission.o missionInfo.o
 OBJS += objectives.o options.o

src/battle/items.c

@@ -0,0 +1,117 @@
+/*
+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 "items.h"
+
+static void action(void);
+static Entity *getItemDef(char *name);
+
+static Entity defHead, *defTail;
+
+void loadItemDefs(void)
+{
+	cJSON *root, *node;
+	char *text;
+	Entity *e;
+	
+	text = readFile("data/battle/items.json");
+	
+	root = cJSON_Parse(text);
+	
+	memset(&defHead, 0, sizeof(Entity));
+	defTail = &defHead;
+	
+	for (node = root->child ; node != NULL ; node = node->next)
+	{
+		e = malloc(sizeof(Entity));
+		memset(e, 0, sizeof(Entity));
+		
+		STRNCPY(e->name, cJSON_GetObjectItem(node, "name")->valuestring, MAX_NAME_LENGTH);
+		STRNCPY(e->defName, cJSON_GetObjectItem(node, "name")->valuestring, MAX_NAME_LENGTH);
+		e->texture = getTexture(cJSON_GetObjectItem(node, "textureName")->valuestring);
+		
+		SDL_QueryTexture(e->texture, NULL, NULL, &e->w, &e->h);
+		
+		defTail->next = e;
+	}
+	
+	cJSON_Delete(root);
+	free(text);
+}
+
+Entity *spawnItem(char *name)
+{
+	Entity *item, *def;
+	
+	item = spawnEntity();
+	
+	def = getItemDef(name);
+	
+	memcpy(item, def, sizeof(Entity));
+	
+	item->action = action;
+	
+	return item;
+}
+
+static Entity *getItemDef(char *name)
+{
+	Entity *e;
+	
+	for (e = defHead.next ; e != NULL ; e = e->next)
+	{
+		if (strcmp(e->name, name) == 0)
+		{
+			return e;
+		}
+	}
+	
+	printf("Error: no such item '%s'\n", name);
+	exit(1);
+}
+
+static void action(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->flags & EF_COLLECTS_ITEMS) && collision(self->x - (self->w / 2), self->y - (self->h / 2), self->w, self->h, e->x - (e->w / 2), e->y - (e->h / 2), e->w, e->h))
+		{
+			e->alive = ALIVE_DEAD;
+			printf("Picked up an Item\n");
+		}
+	}
+}
+
+void destroyItemDefs(void)
+{
+	Entity *f;
+	
+	while (defHead.next)
+	{
+		f = defHead.next;
+		defHead.next = f->next;
+		free(f);
+	}
+}

src/battle/items.h

@@ -0,0 +1,35 @@
+/*
+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"
+#include "../json/cJSON.h"
+
+extern char *readFile(char *filename);
+extern SDL_Texture *getTexture(char *filename);
+extern long lookup(char *name);
+extern long flagsToLong(char *flags);
+extern Entity *spawnEntity(void);
+extern Entity **getAllEntsWithin(int x, int y, int w, int h, Entity *ignore);
+extern int collision(int x1, int y1, int w1, int h1, int x2, int y2, int w2, int h2);
+
+extern Entity *self;

src/system/init.c

@@ -148,6 +148,8 @@ void initGameSystem(void)
 	
 	loadFighterDefs();
 	
+	loadItemDefs();
+	
 	initBulletDefs();
 	
 	initStarSystems();
@@ -247,6 +249,8 @@ void cleanup(void)
 	
 	destroyBulletDefs();
 	
+	destroyItemDefs();
+	
 	destroyStarSystems();
 	
 	destroyBattle();

src/system/init.h

@@ -40,6 +40,7 @@ extern int writeFile(char *filename, char *data);
 extern char *getSaveFilePath(char *filename);
 extern void initSounds(void);
 extern void loadFighterDefs(void);
+extern void loadItemDefs(void);
 extern void initFonts(void);
 extern void initBulletDefs(void);
 extern void initLookups(void);
@@ -53,6 +54,7 @@ extern void destroySounds(void);
 extern void destroyGame(void);
 extern void destroyFighterDefs(void);
 extern void destroyBulletDefs(void);
+extern void destroyItemDefs(void);
 extern void destroyStarSystems(void);
 extern void destroyBattle(void);
 extern void destroyTextures(void);