113 lines
2.3 KiB
C
113 lines
2.3 KiB
C
/*
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Copyright (C) 2018 Parallel Realities
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include "lift.h"
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static void action(void);
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static void activate(int active);
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void initLift(Entity *e)
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{
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Structure *s;
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initEntity(e);
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s = (Structure*)e;
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s->type = ET_LIFT;
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s->state = LIFT_GOTO_FINISH;
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s->flags |= EF_WEIGHTLESS | EF_NO_ENVIRONMENT | EF_EXPLODES | EF_NO_CLIP | EF_ALWAYS_PROCESS | EF_NO_TELEPORT;
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s->speed = 2;
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s->waitTime = 2;
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s->startX = s->startY = -1;
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s->sprite[0] = s->sprite[1] = s->sprite[2] = getSpriteIndex("Lift");
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s->active = 1;
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s->action = action;
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s->activate = activate;
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}
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static void action(void)
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{
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Structure *s;
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s = (Structure*)self;
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s->dx = s->dy = 0;
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if (s->active)
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{
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if (s->state == LIFT_GOTO_START)
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{
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getSlope(s->startX, s->startY, s->x, s->y, &s->dx, &s->dy);
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s->dx *= s->speed;
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s->dy *= s->speed;
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if (abs(s->x - s->startX) < s->speed && abs(s->y - s->startY) < s->speed)
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{
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s->x = s->startX;
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s->y = s->startY;
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s->state = LIFT_GOTO_FINISH;
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s->thinkTime = s->waitTime * FPS;
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s->dx = s->dy = 0;
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}
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}
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else if (s->state == LIFT_GOTO_FINISH)
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{
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getSlope(s->tx, s->ty, s->x, s->y, &s->dx, &s->dy);
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s->dx *= s->speed;
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s->dy *= s->speed;
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if (abs(s->x - s->tx) < s->speed && abs(s->y - s->ty) < s->speed)
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{
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s->x = s->tx;
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s->y = s->ty;
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s->state = LIFT_GOTO_START;
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s->thinkTime = s->waitTime * FPS;
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s->dx = s->dy = 0;
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}
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}
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}
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}
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static void activate(int active)
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{
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self->active = active;
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if (self->active)
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{
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observeActivation(self);
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if (!isOnScreen(self))
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{
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setGameplayMessage(MSG_GAMEPLAY, "Lift activated ...");
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}
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}
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}
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