Explosions.

common.mk

@@ -10,15 +10,16 @@ DEPS += defs.h structs.h
 
 OBJS += camera.o combat.o
 OBJS += draw.o
-OBJS += effects.o entities.o
+OBJS += effects.o entities.o explosions.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 += objectives.o
+OBJS += player.o
 OBJS += quadtree.o
-OBJS += sprites.o
+OBJS += sound.o sprites.o
 OBJS += text.o textures.o title.o triggers.o
 OBJS += util.o
 OBJS += widgets.o

src/combat/combat.c

@@ -118,3 +118,8 @@ static int isBlockedByEntities(Entity *src, Entity *dest)
 	
 	return 0;
 }
+
+int enemyCanSeePlayer(Entity *e)
+{
+	return hasLineOfSight(e, world.bob);
+}

src/combat/explosions.c

@@ -0,0 +1,79 @@
+/*
+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 "explosions.h"
+
+static SDL_Rect radiusRect;
+
+void addExplosion(float x, float y, int radius, Entity *owner)
+{
+	Entity **candidates, *e;
+	float power;
+	int i;
+	
+	playSound(SND_EXPLOSION, CH_EXPLODE);
+
+	/* assuming x and y were from the top left of the entity */
+	x += radius / 2;
+	y += radius / 2;
+
+	addExplosionEffect(x, y, radius, radius / 4);
+
+	radiusRect.x = (int) (x - radius);
+	radiusRect.y = (int) (y - radius);
+	radiusRect.w = radius * 2;
+	radiusRect.h = radius * 2;
+
+	candidates = getAllEntsWithin(radiusRect.x, radiusRect.y, radiusRect.w, radiusRect.h, NULL);
+
+	for (i = 0, e = candidates[i] ; e != NULL ; e = candidates[++i])
+	{
+		if (e != owner && (e->type == ET_BOB || e->type == ET_ENEMY || e->type == ET_DESTRUCTABLE || e->type == ET_BOSS))
+		{
+			power = radius - getDistance(e->x + (e->w / 2), e->y + (e->h / 2), x, y);
+
+			if (power > 0)
+			{
+				if (!(e->flags & EF_IMMUNE))
+				{
+					if (e->flags & EF_BOMB_SHIELD)
+					{
+						applyEntityDamage(e, 2);
+					}
+					else
+					{
+						applyEntityDamage(e, (int) power);
+					}
+
+					if (e->type == ET_BOB)
+					{
+						stunPlayer();
+					}
+
+					if (e->health <= 0)
+					{
+						e->dx = rrnd(-radius / 8, radius / 8);
+						e->dy = rrnd(-5, 0);
+					}
+				}
+			}
+		}
+	}
+}

src/combat/explosions.h

@@ -0,0 +1,29 @@
+/*
+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 rrnd(int low, int high);
+extern void stunPlayer(void);
+extern void applyEntityDamage(Entity *e, int amount);
+extern void addExplosionEffect(int x, int y, int dx, int dy);
+extern void playSound(int snd, int ch);
+extern Entity **getAllEntsWithin(int x, int y, int w, int h, Entity *ignore);
+extern int getDistance(int x1, int y1, int x2, int y2);

src/defs.h

@@ -79,10 +79,15 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 #define ET_ENEMY					0
 #define ET_KEY						1
 #define ET_MIA						2
+#define ET_BOB						3
+#define ET_DESTRUCTABLE				4
+#define ET_BOSS						5
 
 #define EF_NONE						0
 #define EF_HEART_CELL				(2 << 0)
 #define EF_WEIGHTLESS				(2 << 1)
+#define EF_BOMB_SHIELD				(2 << 2)
+#define EF_IMMUNE					(2 << 3)
 
 enum
 {
@@ -129,8 +134,14 @@ enum
 	MSG_OBJECTIVE
 };
 
+enum
+{
+	SND_EXPLOSION
+};
+
 enum
 {
 	CH_PLAYER,
+	CH_EXPLODE,
 	CH_MAX
 };

src/system/sound.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 "sound.h"
+
+void playSound(int snd, int ch)
+{
+}

src/system/sound.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/effects.c

@@ -34,6 +34,10 @@ void initEffects(void)
 	debris[2] = getSpriteIndex("Debris3");
 }
 
+void addExplosionEffect(int x, int y, float dx, float dy)
+{
+}
+
 void addSmallFleshChunk(double x, double y)
 {
 	Entity *chunk;

src/world/entities.c

@@ -23,3 +23,7 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 void activateEntities(char *names, int activate)
 {
 }
+
+void applyEntityDamage(Entity *e, int amount)
+{
+}

src/world/player.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 "player.h"
+
+void stunPlayer(void)
+{
+}

src/world/player.h

@@ -0,0 +1,22 @@
+/*
+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"
+