117 lines
2.9 KiB
C
117 lines
2.9 KiB
C
/*
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Copyright (C) 2015-2019 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 "rope.h"
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void attachRope(void)
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{
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int i, distance;
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Entity *e, **candidates;
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if ((self->flags & EF_HAS_ROPE) && self->towing == NULL)
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{
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candidates = getAllEntsInRadius(self->x, self->y, self->separationRadius, self);
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for (i = 0, e = candidates[i] ; e != NULL ; e = candidates[++i])
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{
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if (!e->owner && e->type == ET_FIGHTER && (e->flags & EF_DISABLED) && (e->flags & EF_ROPED_ATTACHED) == 0 && e->alive == ALIVE_ALIVE)
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{
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distance = getDistance(e->x, e->y, self->x, self->y);
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if (distance > 0 && distance <= self->separationRadius)
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{
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self->towing = e;
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self->aiFlags |= AIF_GOAL_JUMPGATE;
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e->owner = self;
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e->speed = 1;
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e->flags |= EF_RETREATING;
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e->flags |= EF_ROPED_ATTACHED;
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runScriptFunction("TOWING %s", e->name);
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if (self == player)
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{
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battle.stats[STAT_NUM_TOWED]++;
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addHudMessage(colors.white, _("Tow rope attached"));
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}
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playBattleSound(SND_TOW_ROPE, e->x, e->y);
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}
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}
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}
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}
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}
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void doRope(Entity *owner)
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{
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float dx, dy, angle, force;
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int distance;
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if (owner->towing)
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{
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distance = getDistance(owner->towing->x, owner->towing->y, owner->x, owner->y);
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if (distance > ROPE_DISTANCE)
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{
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angle = getAngle(owner->x, owner->y, owner->towing->x, owner->towing->y);
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dx = sin(TO_RAIDANS(angle));
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dy = -cos(TO_RAIDANS(angle));
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force = (distance - ROPE_DISTANCE) * 0.02;
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owner->towing->dx -= (dx * force);
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owner->towing->dy -= (dy * force);
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}
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owner->towing->dx *= 0.985;
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owner->towing->dy *= 0.985;
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}
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}
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void drawRope(Entity *e)
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{
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if (e->towing)
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{
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SDL_SetRenderDrawColor(app.renderer, 200, 200, 200, 255);
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SDL_RenderDrawLine(app.renderer, e->x - battle.camera.x, e->y - battle.camera.y, e->towing->x - battle.camera.x, e->towing->y - battle.camera.y);
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}
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}
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void cutRope(Entity *e)
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{
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/* thing being towed is dead */
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if (e->owner && e->owner->towing == e)
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{
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e->owner->towing = NULL;
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e->owner->aiFlags &= ~AIF_GOAL_JUMPGATE;
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}
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/* tug is dead - reset thing being tugged */
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if (e->towing)
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{
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e->towing->flags &= ~EF_RETREATING;
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e->towing->flags &= ~EF_ROPED_ATTACHED;
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e->towing->owner = NULL;
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e->towing = NULL;
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}
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}
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