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#include <stdio.h>
#include <stdlib.h>
#include "../inventory/inventory.h"
static struct color gray;
static struct color darkgray;
static bool use_item(struct itemstack *stack)
{
return true;
}
struct inventory player_inventory = {NULL};
static int selected_index = 0;
void inventory_add(struct inventory *self, struct itemstack stack)
{
struct list **ptr = &self->stacks;
if (stack.item->stackable) {
for (; *ptr != NULL; ptr = &(*ptr)->next) {
struct itemstack *other = (*ptr)->element;
if (other->item == stack.item) {
other->count += stack.count;
return;
}
}
}
struct itemstack *buf = make_buffer(&stack, sizeof(struct itemstack));
*ptr = add_element(*ptr, buf);
if (buf->item->on_create)
buf->item->on_create(buf);
}
/*
bool inventory_remove(struct inventory *self, struct itemstack *stack)
{
stack.count = -stack.count;
for (struct list **ptr = &self->stacks; *ptr != NULL; ) {
struct itemstack *other = (*ptr)->element;
if (other->item == stack.item) {
stack.count += other->count;
if (stack.count > 0) {
other->count = stack.count;
return true;
} else {
struct list *next = ptr->next;
other->count = 0;
if (other->item->on_destroy)
other->item->on_destroy(other);
free(other);
free(*ptr);
*ptr = next;
continue;
}
}
ptr = &(*ptr)->next;
}
return false;
}
*/
static void decrease_item_count(struct list **ptr)
{
struct itemstack *stack = (*ptr)->element;
stack->count--;
if (stack->count == 0) {
struct list *next = (*ptr)->next;
if (stack->item->on_destroy)
stack->item->on_destroy(stack);
if (stack->meta)
free(stack->meta);
free(stack);
free(*ptr);
*ptr = next;
}
}
static struct list **find_item(struct inventory *self, struct item *item)
{
for (struct list **ptr = &self->stacks; *ptr != NULL; ptr = &(*ptr)->next) {
struct itemstack *stack = (*ptr)->element;
if (stack->item == item)
return ptr;
}
return NULL;
}
bool inventory_remove(struct inventory *self, struct item *item)
{
struct list **ptr = find_item(self, item);
if (ptr) {
decrease_item_count(ptr);
return true;
}
return false;
}
struct itemstack *inventory_find(struct inventory *self, struct item *item)
{
struct list **ptr = find_item(self, item);
return ptr ? (*ptr)->element : NULL;
}
static void handle_enter()
{
int i = 0;
for (struct list **ptr = &player_inventory.stacks; *ptr != NULL; ptr = &(*ptr)->next, i++) {
if (i == selected_index) {
struct itemstack *stack = (*ptr)->element;
if (stack->item->on_use && stack->item->on_use(stack))
decrease_item_count(ptr);
return;
}
}
}
static void handle_arrow()
{
char c = fgetc(stdin);
if (c == '[') {
char dir = fgetc(stdin);
int count = 0;
for (struct list *ptr = player_inventory.stacks; ptr != NULL; ptr = ptr->next)
count++;
if (count == 0)
return;
switch (dir) {
case 'A':
selected_index--;
if (selected_index < 0)
selected_index = count - 1;
break;
case 'B':
selected_index++;
if (selected_index >= count)
selected_index = 0;
break;
}
} else {
ungetc(c, stdin);
}
}
static void render_inventory(struct winsize ws)
{
printf("\e[3;0H");
printf(" \e[1mInventory\e[21m\n");
set_color(gray, false);
int i = 0;
for (struct list *ptr = player_inventory.stacks; ptr != NULL; ptr = ptr->next, i++) {
struct itemstack *stack = ptr->element;
if (i == selected_index) {
printf(" \e[39m→ ");
set_color(gray, false);
} else {
printf(" ");
}
printf("%s", stack->item->name);
if (stack->count > 1) {
set_color(darkgray, false);
printf(" (x%u)", stack->count);
set_color(gray, false);
}
printf("\n");
}
}
__attribute__ ((constructor)) static void init()
{
gray = get_color("#9E9E9E");
darkgray = get_color("#555555");
register_render_component(&render_inventory);
register_input_handler('\033', (struct input_handler) {
.run_if_dead = false,
.callback = &handle_arrow,
});
register_input_handler('\n', (struct input_handler) {
.run_if_dead = false,
.callback = &handle_enter,
});
}
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