breakhack/src/projectile.c

160 lines
4.2 KiB
C

/*
* BreakHack - A dungeone crawler RPG
* Copyright (C) 2018 Linus Probert <linus.probert@gmail.com>
*
* 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 3 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, see <http://www.gnu.org/licenses/>.
*/
#include <stdlib.h>
#include <string.h>
#include "projectile.h"
#include "util.h"
#include "texturecache.h"
#include "player.h"
#include "monster.h"
#include "mixer.h"
#include "gui.h"
#include "item_builder.h"
#include "random.h"
#include "update_data.h"
static void
onDaggerRender(Sprite *s)
{
if (s->angle >= 0)
s->angle += 30;
else
s->angle -= 30;
}
Projectile *
projectile_dagger_create(void)
{
Projectile *p = projectile_create();
sprite_set_texture(p->sprite, texturecache_add("Items/ShortWep.png"), 0);
p->sprite->onRender = onDaggerRender;
p->sprite->animate = false;
p->sprite->clip = CLIP16(0, 0);
p->sprite->dim = (Dimension) { 32, 32 };
p->sprite->rotationPoint = (SDL_Point) { 16, 16 };
p->collisionCount = 0;
memset(&p->processedSpaces,
false,
sizeof(p->processedSpaces[0][0]) * MAP_ROOM_WIDTH * MAP_ROOM_HEIGHT);
return p;
}
Projectile *
projectile_create(void)
{
Projectile *p = ec_malloc(sizeof(Projectile));
p->sprite = sprite_create();
p->velocity = VECTOR2D_NODIR;
p->alive = true;
p->lifetime = timer_create();
p->onRender = NULL;
timer_start(p->lifetime);
return p;
}
static Position
get_collision_pos_for(Projectile *p)
{
Position collisionPos = p->sprite->pos;
if (p->velocity.x > 0) collisionPos.x += TILE_DIMENSION;
if(p->velocity.y > 0) collisionPos.y += TILE_DIMENSION;
return collisionPos;
}
static Position
get_projectile_pos_for(Projectile *p)
{
Position projectilePos = p->sprite->pos;
if (p->velocity.x < 0) projectilePos.x += TILE_DIMENSION;
if (p->velocity.y < 0) projectilePos.y += TILE_DIMENSION;
return projectilePos;
}
void
projectile_update(Projectile *p, UpdateData *data)
{
bool alive = false;
p->sprite->pos.x += (int) (p->velocity.x * data->deltatime);
p->sprite->pos.y += (int) (p->velocity.y * data->deltatime);
if (timer_get_ticks(p->lifetime) > 2000)
p->alive = false;
Position collisionPos = get_collision_pos_for(p);
if (!position_in_room(&collisionPos, &data->map->currentRoom)) {
p->alive = false;
return;
}
Position roomPos = position_to_matrix_coords(&collisionPos);
if (p->processedSpaces[roomPos.x][roomPos.y])
return;
p->processedSpaces[roomPos.x][roomPos.y] = true;
RoomSpace *space = &data->matrix->spaces[roomPos.x][roomPos.y];
if (!space->occupied)
return;
if (space->player)
return;
Position projectilePos = get_projectile_pos_for(p);
if (space->monster) {
Stats tmpStats = data->player->stats;
tmpStats.dmg *= 2;
Uint32 dmg = stats_fight(&tmpStats, &space->monster->stats);
if (dmg > 0) {
gui_log("Your dagger pierced %s for %u damage", space->monster->lclabel, dmg);
data->player->stat_data.hits += 1;
} else {
gui_log("%s dodged your dagger", space->monster->label);
}
monster_hit(space->monster, dmg);
player_monster_kill_check(data->player, space->monster);
alive = player_has_artifact(data->player, PIERCING_DAGGERS) > p->collisionCount;
projectilePos = space->monster->sprite->pos;
}
mixer_play_effect(SWORD_HIT);
if (!alive && get_random(5) <= player_has_artifact(data->player, DAGGER_RECOVERY)) {
Item *item = item_builder_build_item(DAGGER, 1);
item->sprite->pos = position_to_tile_pos(&projectilePos);
linkedlist_append(&data->map->items, item);
}
p->alive = alive;
p->collisionCount++;
}
void
projectile_render(Projectile *p, Camera *cam)
{
if (p->onRender)
p->onRender(p);
sprite_render(p->sprite, cam);
}
void
projectile_destroy(Projectile *p)
{
sprite_destroy(p->sprite);
timer_destroy(p->lifetime);
free(p);
}