Triggers.

common.mk

@@ -10,13 +10,14 @@ DEPS += defs.h structs.h
 
 OBJS += camera.o
 OBJS += draw.o
+OBJS += entities.o
 OBJS += game.o
 OBJS += hud.o
 OBJS += init.o input.o io.o
 OBJS += lookup.o
 OBJS += main.o map.o maths.o
 OBJS += quadtree.o
-OBJS += text.o textures.o title.o
+OBJS += text.o textures.o title.o triggers.o
 OBJS += util.o
 OBJS += widgets.o
 

src/structs.h

@@ -22,6 +22,8 @@ typedef struct Texture Texture;
 typedef struct Lookup Lookup;
 typedef struct Quadtree Quadtree;
 typedef struct Entity Entity;
+typedef struct Objective Objective;
+typedef struct Trigger Trigger;
 
 typedef struct {
 	int debug;
@@ -79,6 +81,29 @@ struct Entity {
 	int h;
 };
 
+struct Objective {
+	char id[MAX_NAME_LENGTH];
+	char description[MAX_DESCRIPTION_LENGTH];
+	char targetName[MAX_NAME_LENGTH];
+	int currentValue;
+	int targetValue;
+	int totalValue;
+	int required;
+	Objective *next;
+};
+
+/* How you going, Dave? */
+struct Trigger {
+	char name[MAX_NAME_LENGTH];
+	char message[MAX_DESCRIPTION_LENGTH];
+	char targetNames[MAX_DESCRIPTION_LENGTH];
+	int x;
+	int y;
+	int w;
+	int h;
+	Trigger *next;
+};
+
 typedef struct {
 	SDL_Rect bounds;
 	float shakeAmount;
@@ -140,6 +165,8 @@ struct Quadtree {
 };
 
 typedef struct {
+	Entity *bob;
 	Map map;
 	Quadtree quadtree;
+	Trigger triggerHead, *triggerTail;
 } World;

src/world/entities.c

@@ -0,0 +1,25 @@
+/*
+Copyright (C) 2018 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 "entities.h"
+
+void activateEntities(char *names, int activate)
+{
+}

src/world/entities.h

@@ -0,0 +1,21 @@
+/*
+Copyright (C) 2018 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"

src/world/triggers.c

@@ -0,0 +1,86 @@
+/*
+Copyright (C) 2018 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 "triggers.h"
+
+void doLocationTriggers(void)
+{
+	Trigger *t, *prev;
+	
+	prev = &world.triggerHead;
+	
+	for (t = world.triggerHead.next ; t != NULL ; t = t->next)
+	{
+		if (t->w > 0 && t->h > 0)
+		{
+			if (collision(t->x, t->y, t->w, t->h, world.bob->x, world.bob->y, world.bob->w, world.bob->h))
+			{
+				activateEntities(t->targetNames, 1);
+
+				if (t->message != NULL)
+				{
+					setGameplayMessage(t->message, MSG_GAMEPLAY);
+				}
+				
+				if (t == world.triggerTail)
+				{
+					world.triggerTail = prev;
+				}
+
+				prev->next = t->next;
+				free(t);
+				t = prev;
+			}
+		}
+		
+		prev = t;
+	}
+}
+
+void fireTriggers(char *name)
+{
+	Trigger *t, *prev;
+	
+	prev = &world.triggerHead;
+	
+	for (t = world.triggerHead.next ; t != NULL ; t = t->next)
+	{
+		if (strcmp(t->name, name) == 0)
+		{
+			activateEntities(t->targetNames, 1);
+
+			if (t->message != NULL)
+			{
+				setGameplayMessage(t->message, MSG_GAMEPLAY);
+			}
+			
+			if (t == world.triggerTail)
+			{
+				world.triggerTail = prev;
+			}
+
+			prev->next = t->next;
+			free(t);
+			t = prev;
+		}
+		
+		prev = t;
+	}
+}

src/world/triggers.h

@@ -0,0 +1,27 @@
+/*
+Copyright (C) 2018 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 int collision(int x1, int y1, int w1, int h1, int x2, int y2, int w2, int h2);
+extern void activateEntities(char *names, int activate);
+extern void setGameplayMessage(char *newMessage, int newMessageType);
+
+extern World world;