Pressure plate.

common.mk

@@ -37,7 +37,7 @@ OBJS += key.o keycard.o
 OBJS += lift.o lookup.o
 OBJS += main.o map.o maths.o mia.o
 OBJS += objectives.o
-OBJS += particles.o player.o powerPoint.o powerPool.o
+OBJS += particles.o player.o powerPoint.o powerPool.o pressurePlate.o
 OBJS += quadtree.o
 OBJS += sound.o sprites.o
 OBJS += tankCommander.o tankTrack.o teeka.o text.o textures.o title.o triggers.o

src/structs.h

@@ -160,6 +160,8 @@ struct Entity {
 	int state;
 	int speed;
 	int waitTime;
+	int isWeighted;
+	float weightApplied;
 	Entity *carriedItem;
 	Entity *owner;
 	void (*action)(void);

src/world/entities/structures/pressurePlate.c

@@ -0,0 +1,73 @@
+/*
+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 "pressurePlate.h"
+
+static void tick(void);
+static void touch(Entity *other);
+
+void initPressurePlate(Entity *e)
+{
+	initEntity(e);
+	
+	e->sprite[FACING_LEFT] = e->sprite[FACING_RIGHT] = e->sprite[FACING_DIE] = getSpriteIndex("PressurePlate");
+
+	e->flags |= EF_WEIGHTLESS | EF_NO_CLIP | EF_NO_ENVIRONMENT | EF_IGNORE_BULLETS;
+
+	e->plane = PLANE_FOREGROUND;
+
+	e->isStatic = 1;
+	
+	e->tick = tick;
+	e->touch = touch;
+}
+
+static void tick(void)
+{
+	if (self->isWeighted)
+	{
+		self->weightApplied = MAX(self->weightApplied - 1, 0);
+
+		if (self->active && self->weightApplied == 0)
+		{
+			self->active = 0;
+			self->spriteFrame = 0;
+
+			activateEntities(self->targetNames, 0);
+		}
+	}
+}
+
+static void touch(Entity *other)
+{
+	if (other->type == ET_BOB || other->type == ET_PUSHBLOCK)
+	{
+		if (!self->active)
+		{
+			activateEntities(self->targetNames, 1);
+
+			playSound(SND_PRESSURE_PLATE, CH_MECHANICAL);
+		}
+
+		self->active = 1;
+		self->spriteFrame = 1;
+		self->weightApplied = 5;
+	}
+}

src/world/entities/structures/pressurePlate.h

@@ -0,0 +1,28 @@
+/*
+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 void initEntity(Entity *e);
+extern int getSpriteIndex(char *name);
+extern void activateEntities(char *names, int activate);
+extern void playSound(int snd, int ch);
+
+extern Entity *self;