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#include <stdlib.h>
#include <stddef.h>
#include "../game/game.h"
#include "../movement/movement.h"
#include "../inventory/inventory.h"
struct fireball_data
{
double timer;
int vx;
int vy;
};
static void fireball_spawn(struct entity *self, void *data)
{
self->meta = malloc(sizeof(struct fireball_data));
*((struct fireball_data *) self->meta) = *((struct fireball_data *) data);
self->color.r = clamp(self->color.r + rand() % 65 - 32, 0, 255);
self->color.g = clamp(self->color.g + rand() % 65 - 32, 0, 255);
self->color.b = clamp(self->color.b + rand() % 65 - 32, 0, 255);
}
static void fireball_step(struct entity *self, struct entity_step_data stepdata)
{
struct fireball_data *data = self->meta;
if (stepdata.visible && (data->timer -= stepdata.dtime) <= 0.0) {
data->timer = 0.1;
move(self, data->vx, data->vy);
}
}
static void fireball_collide(struct entity *self, int x, int y)
{
(void) x, y;
self->remove = true;
}
static void fireball_collide_with_entity(struct entity *self, struct entity *other)
{
add_health(other, -(3 + rand() % 3));
self->remove = true;
}
static struct entity fireball_entity = {
.name = "fireball",
.x = 0,
.y = 0,
.color = {0},
.use_color = true,
.texture = "⬤ ",
.remove = false,
.meta = NULL,
.health = 1,
.max_health = 1,
.collide_with_entities = true,
.on_step = &fireball_step,
.on_collide = &fireball_collide,
.on_collide_with_entity = &fireball_collide_with_entity,
.on_spawn = &fireball_spawn,
.on_remove = NULL,
.on_death = NULL,
.on_damage = NULL,
};
static void shoot_fireball()
{
int vx, vy;
vx = vy = 0;
dir_to_xy(last_player_move, &vx, &vy);
spawn(fireball_entity, player.x + vx, player.y + vy, & (struct fireball_data) {
.timer = 0.1,
.vx = vx,
.vy = vy,
});
}
static bool shoot_fireball_item(struct itemstack *stack)
{
(void) stack;
shoot_fireball();
return true;
}
static struct item fireball_item = {
.name = "Fireball",
.stackable = true,
.on_use = &shoot_fireball_item,
.on_destroy = NULL,
};
static void shoot_if_has_fireball()
{
if (inventory_remove(&player_inventory, &fireball_item))
shoot_fireball();
}
__attribute__((constructor)) static void init()
{
fireball_entity.color = get_color("#FF6611");
register_input_handler(' ', (struct input_handler) {
.run_if_dead = false,
.callback = &shoot_if_has_fireball,
});
inventory_add(&player_inventory, (struct itemstack) {
.item = &fireball_item,
.count = 7,
.meta = NULL,
});
}
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