mirror of
https://github.com/OpenRCT2/OpenRCT2
synced 2026-01-19 21:13:05 +01:00
604 lines
16 KiB
C
604 lines
16 KiB
C
/*****************************************************************************
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* Copyright (c) 2014 Ted John
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* OpenRCT2, an open source clone of Roller Coaster Tycoon 2.
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*
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* This file is part of OpenRCT2.
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*
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* OpenRCT2 is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (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. See the
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* 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, see <http://www.gnu.org/licenses/>.
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*****************************************************************************/
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#include "../addresses.h"
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#include "../audio/audio.h"
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#include "../interface/viewport.h"
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#include "../localisation/date.h"
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#include "../localisation/localisation.h"
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#include "../scenario.h"
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#include "fountain.h"
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#include "sprite.h"
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rct_sprite* g_sprite_list = RCT2_ADDRESS(RCT2_ADDRESS_SPRITE_LIST, rct_sprite);
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static uint16 sprite_get_first_in_quadrant(int x, int y)
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{
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int offset = ((x & 0x1FE0) << 3) | (y >> 5);
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return RCT2_ADDRESS(0x00F1EF60, uint16)[offset];
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}
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static void invalidate_sprite_max_zoom(rct_sprite *sprite, int maxZoom)
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{
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if (sprite->unknown.sprite_left == (sint16)0x8000) return;
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for (rct_viewport** viewport_p = RCT2_ADDRESS(RCT2_ADDRESS_ACTIVE_VIEWPORT_PTR_ARRAY, rct_viewport*); *viewport_p != NULL; viewport_p++) {
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rct_viewport* viewport = *viewport_p;
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if (viewport->zoom <= maxZoom) {
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viewport_invalidate(
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viewport,
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sprite->unknown.sprite_left,
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sprite->unknown.sprite_top,
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sprite->unknown.sprite_right,
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sprite->unknown.sprite_bottom
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);
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}
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}
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}
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/**
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* Invalidate the sprite if at closest zoom.
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* rct2: 0x006EC60B
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*/
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void invalidate_sprite_0(rct_sprite* sprite)
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{
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invalidate_sprite_max_zoom(sprite, 0);
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}
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/**
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* Invalidate sprite if at closest zoom or next zoom up from closest.
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* rct2: 0x006EC53F
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*/
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void invalidate_sprite_1(rct_sprite *sprite)
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{
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invalidate_sprite_max_zoom(sprite, 1);
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}
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/**
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* Invalidate sprite if not at furthest zoom.
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* rct2: 0x006EC473
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*/
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void invalidate_sprite_2(rct_sprite *sprite)
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{
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invalidate_sprite_max_zoom(sprite, 2);
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}
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/*
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*
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* rct2: 0x0069EB13
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*/
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void reset_sprite_list(){
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RCT2_GLOBAL(0x1388698, uint16) = 0;
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memset(g_sprite_list, 0, sizeof(rct_sprite)* 0x2710);
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for (int i = 0; i < 6; ++i){
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RCT2_ADDRESS(RCT2_ADDRESS_SPRITES_NEXT_INDEX, uint16)[i] = -1;
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RCT2_ADDRESS(0x13573C8, uint16)[i] = 0;
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}
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rct_sprite* previous_spr = (rct_sprite*)SPRITE_INDEX_NULL;
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rct_sprite* spr = g_sprite_list;
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for (int i = 0; i < 0x2710; ++i){
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spr->unknown.sprite_identifier = 0xFF;
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spr->unknown.sprite_index = i;
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spr->unknown.next = SPRITE_INDEX_NULL;
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spr->unknown.linked_list_type_offset = 0;
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if (previous_spr != (rct_sprite*)SPRITE_INDEX_NULL){
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spr->unknown.previous = previous_spr->unknown.sprite_index;
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previous_spr->unknown.next = i;
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}
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else{
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spr->unknown.previous = SPRITE_INDEX_NULL;
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RCT2_GLOBAL(RCT2_ADDRESS_SPRITES_NEXT_INDEX, uint16) = i;
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}
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previous_spr = spr;
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spr++;
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}
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RCT2_GLOBAL(0x13573C8, uint16) = 0x2710;
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reset_0x69EBE4();
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}
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/**
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* rct2: 0x0069EBE4
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* This function looks as though it sets some sort of order for sprites.
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* Sprites can share thier position if this is the case.
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*/
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void reset_0x69EBE4(){
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memset((uint16*)0xF1EF60, -1, 0x10001*2);
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rct_sprite* spr = g_sprite_list;
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for (; spr < (rct_sprite*)RCT2_ADDRESS_SPRITES_NEXT_INDEX; spr++){
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if (spr->unknown.sprite_identifier != 0xFF){
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uint32 edi = spr->unknown.x;
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if (spr->unknown.x == SPRITE_LOCATION_NULL){
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edi = 0x10000;
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} else {
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int ecx = spr->unknown.y;
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ecx >>= 5;
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edi &= 0x1FE0;
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edi <<= 3;
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edi |= ecx;
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}
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uint16 ax = RCT2_ADDRESS(0xF1EF60,uint16)[edi];
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RCT2_ADDRESS(0xF1EF60,uint16)[edi] = spr->unknown.sprite_index;
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spr->unknown.next_in_quadrant = ax;
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}
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}
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}
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/**
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* Clears all the unused sprite memory to zero. Probably so that it can be compressed better when saving.
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* rct2: 0x0069EBA4
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*/
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void sprite_clear_all_unused()
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{
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rct_unk_sprite *sprite;
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uint16 spriteIndex, nextSpriteIndex, previousSpriteIndex;
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spriteIndex = RCT2_GLOBAL(RCT2_ADDRESS_SPRITES_NEXT_INDEX, uint16);
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while (spriteIndex != SPRITE_INDEX_NULL) {
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sprite = &g_sprite_list[spriteIndex].unknown;
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nextSpriteIndex = sprite->next;
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previousSpriteIndex = sprite->previous;
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memset(sprite, 0, sizeof(rct_sprite));
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sprite->sprite_identifier = SPRITE_IDENTIFIER_NULL;
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sprite->next = nextSpriteIndex;
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sprite->previous = previousSpriteIndex;
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sprite->linked_list_type_offset = SPRITE_LINKEDLIST_OFFSET_NULL;
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sprite->sprite_index = spriteIndex;
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spriteIndex = nextSpriteIndex;
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}
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}
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/*
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* rct2: 0x0069EC6B
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* bl: if bl & 2 > 0, the sprite ends up in the MISC linked list.
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*/
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rct_sprite *create_sprite(uint8 bl)
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{
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SPRITE_LINKEDLIST_OFFSET linkedListTypeOffset = SPRITE_LINKEDLIST_OFFSET_UNKNOWN; // cl
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if ((bl & 2) != 0)
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{
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// 69EC96;
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uint16 cx = 0x12C - RCT2_GLOBAL(0x13573CE, uint16);
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if (cx >= RCT2_GLOBAL(0x13573C8, uint16))
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{
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return NULL;
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}
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linkedListTypeOffset = SPRITE_LINKEDLIST_OFFSET_MISC;
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}
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else if (RCT2_GLOBAL(0x13573C8, uint16) <= 0)
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{
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return NULL;
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}
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rct_unk_sprite *sprite = &(g_sprite_list[RCT2_GLOBAL(RCT2_ADDRESS_SPRITES_NEXT_INDEX, uint16)]).unknown;
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move_sprite_to_list((rct_sprite *)sprite, (uint8)linkedListTypeOffset);
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sprite->x = SPRITE_LOCATION_NULL;
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sprite->y = SPRITE_LOCATION_NULL;
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sprite->z = 0;
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sprite->name_string_idx = 0;
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sprite->sprite_width = 0x10;
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sprite->sprite_height_negative = 0x14;
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sprite->sprite_height_positive = 0x8;
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sprite->var_0C = 0;
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sprite->sprite_left = SPRITE_LOCATION_NULL;
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sprite->next_in_quadrant = RCT2_ADDRESS(0xF1EF60, uint16)[0x10000];
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RCT2_ADDRESS(0xF1EF60, uint16)[0x10000] = sprite->sprite_index;
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return (rct_sprite*)sprite;
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}
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/*
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* rct2: 0x0069ED0B
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* This function moves a sprite to the specified sprite linked list.
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* There are 5/6 of those, and cl specifies a pointer offset
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* of the desired linked list in a uint16 array. Known valid values are
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* 2, 4, 6, 8 or 10 (SPRITE_LINKEDLIST_OFFSET_...)
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*/
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void move_sprite_to_list(rct_sprite *sprite, uint8 cl)
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{
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rct_unk_sprite *unkSprite = &sprite->unknown;
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// No need to move if the sprite is already in the desired list
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if (unkSprite->linked_list_type_offset == cl)
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return;
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// If the sprite is currently the head of the list, the
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// sprite following this one becomes the new head of the list.
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if (unkSprite->previous == SPRITE_INDEX_NULL)
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{
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RCT2_GLOBAL(RCT2_ADDRESS_SPRITES_NEXT_INDEX + unkSprite->linked_list_type_offset, uint16) = unkSprite->next;
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}
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else
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{
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// Hook up sprite->previous->next to sprite->next, removing the sprite from its old list
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g_sprite_list[unkSprite->previous].unknown.next = unkSprite->next;
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}
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// Similarly, hook up sprite->next->previous to sprite->previous
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if (unkSprite->next != SPRITE_INDEX_NULL)
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{
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g_sprite_list[unkSprite->next].unknown.previous = unkSprite->previous;
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}
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int oldListTypeOffset = unkSprite->linked_list_type_offset;
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unkSprite->previous = SPRITE_INDEX_NULL; // We become the new head of the target list, so there's no previous sprite
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unkSprite->linked_list_type_offset = cl;
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unkSprite->next = RCT2_GLOBAL(RCT2_ADDRESS_SPRITES_NEXT_INDEX + cl, uint16); // This sprite's next sprite is the old head, since we're the new head
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RCT2_GLOBAL(RCT2_ADDRESS_SPRITES_NEXT_INDEX + cl, uint16) = unkSprite->sprite_index; // Store this sprite's index as head of its new list
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if (unkSprite->next != SPRITE_INDEX_NULL)
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{
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// Fix the chain by settings sprite->next->previous to sprite_index
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g_sprite_list[unkSprite->next].unknown.previous = unkSprite->sprite_index;
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}
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// These globals are probably counters for each sprite list?
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// Decrement old list counter, increment new list counter.
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--(RCT2_GLOBAL(0x13573C8 + oldListTypeOffset, uint16));
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++(RCT2_GLOBAL(0x13573C8 + cl, uint16));
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}
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/**
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*
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* rct: 0x00673200
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*/
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static void sprite_misc_0_update(rct_sprite *sprite)
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{
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invalidate_sprite_2(sprite);
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int original_var24 = sprite->unknown.var_24;
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sprite->unknown.var_24 += 0x5555;
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if (sprite->unknown.var_24 < 0x5555) {
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sprite_move(sprite->unknown.x, sprite->unknown.y, sprite->unknown.z + 1, sprite);
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}
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sprite->unknown.var_26 += 64;
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if (sprite->unknown.var_26 >= (56 * 64)) {
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sprite_remove(sprite);
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}
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}
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/**
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*
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* rct2: 0x0067363D
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*/
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void sprite_misc_3_create(int x, int y, int z)
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{
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rct_unk_sprite *sprite = (rct_unk_sprite*)create_sprite(2);
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if (sprite != NULL) {
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sprite->sprite_width = 44;
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sprite->sprite_height_negative = 32;
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sprite->sprite_height_positive = 34;
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sprite->sprite_identifier = SPRITE_IDENTIFIER_MISC;
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sprite_move(x, y, z + 4, (rct_sprite*)sprite);
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sprite->misc_identifier = SPRITE_MISC_3;
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sprite->var_26 = 0;
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}
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}
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/**
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*
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* rct: 0x00673385
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*/
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static void sprite_misc_3_update(rct_sprite *sprite)
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{
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invalidate_sprite_2(sprite);
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sprite->unknown.var_26 += 128;
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if (sprite->unknown.var_26 >= (36 * 128)) {
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sprite_remove(sprite);
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}
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}
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/**
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*
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* rct2: 0x0067366B
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*/
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void sprite_misc_5_create(int x, int y, int z)
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{
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rct_unk_sprite *sprite = (rct_unk_sprite*)create_sprite(2);
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if (sprite != NULL) {
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sprite->sprite_width = 25;
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sprite->sprite_height_negative = 85;
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sprite->sprite_height_positive = 8;
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sprite->sprite_identifier = SPRITE_IDENTIFIER_MISC;
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sprite_move(x, y, z + 4, (rct_sprite*)sprite);
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sprite->misc_identifier = SPRITE_MISC_5;
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sprite->var_26 = 0;
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}
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}
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/**
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*
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* rct: 0x006733B4
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*/
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static void sprite_misc_5_update(rct_sprite *sprite)
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{
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invalidate_sprite_2(sprite);
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sprite->unknown.var_26 += 64;
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if (sprite->unknown.var_26 >= (124 * 64)) {
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sprite_remove(sprite);
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}
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}
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/**
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*
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* rct: 0x006731CD
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*/
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void sprite_misc_update(rct_sprite *sprite)
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{
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switch (sprite->unknown.misc_identifier) {
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case SPRITE_MISC_0:
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sprite_misc_0_update(sprite);
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break;
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case SPRITE_MISC_MONEY_EFFECT:
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money_effect_update(&sprite->money_effect);
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break;
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case SPRITE_MISC_CRASHED_VEHICLE_PARTICLE:
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crashed_vehicle_particle_update((rct_crashed_vehicle_particle*)sprite);
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break;
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case SPRITE_MISC_3:
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sprite_misc_3_update(sprite);
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break;
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case SPRITE_MISC_CRASH_SPLASH:
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crash_splash_update((rct_crash_splash*)sprite);
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break;
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case SPRITE_MISC_5:
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sprite_misc_5_update(sprite);
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break;
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case SPRITE_MISC_JUMPING_FOUNTAIN_WATER:
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case SPRITE_MISC_JUMPING_FOUNTAIN_SNOW:
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jumping_fountain_update(&sprite->jumping_fountain);
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break;
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case SPRITE_MISC_BALLOON:
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balloon_update(&sprite->balloon);
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break;
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case SPRITE_MISC_DUCK:
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duck_update(&sprite->duck);
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break;
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}
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}
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/**
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*
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* rct: 0x00672AA4
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*/
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void sprite_misc_update_all()
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{
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rct_sprite *sprite;
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uint16 spriteIndex;
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spriteIndex = RCT2_GLOBAL(RCT2_ADDRESS_SPRITES_START_MISC, uint16);
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while (spriteIndex != SPRITE_INDEX_NULL) {
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sprite = &g_sprite_list[spriteIndex];
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spriteIndex = sprite->unknown.next;
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sprite_misc_update(sprite);
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}
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}
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/**
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* rct2: 0x0069E9D3
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* Moves a sprite to a new location.
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* ax: x
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* cx: y
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* dx: z
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*/
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void sprite_move(sint16 x, sint16 y, sint16 z, rct_sprite* sprite){
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if (x < 0 || y < 0 || x > 0x1FFF || y > 0x1FFF)
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x = 0x8000;
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int new_position = x;
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if (x == (sint16)0x8000)new_position = 0x10000;
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else{
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new_position &= 0x1FE0;
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new_position = (y >> 5) | (new_position << 3);
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}
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int current_position = sprite->unknown.x;
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if (sprite->unknown.x == (sint16)0x8000)current_position = 0x10000;
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else{
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current_position &= 0x1FE0;
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current_position = (sprite->unknown.y >> 5) | (current_position << 3);
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}
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if (new_position != current_position){
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uint16* sprite_idx = &RCT2_ADDRESS(0xF1EF60, uint16)[current_position];
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rct_sprite* sprite2 = &g_sprite_list[*sprite_idx];
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while (sprite != sprite2){
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sprite_idx = &sprite2->unknown.next_in_quadrant;
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sprite2 = &g_sprite_list[*sprite_idx];
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}
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*sprite_idx = sprite->unknown.next_in_quadrant;
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int temp_sprite_idx = RCT2_ADDRESS(0xF1EF60, uint16)[new_position];
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RCT2_ADDRESS(0xF1EF60, uint16)[new_position] = sprite->unknown.sprite_index;
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sprite->unknown.next_in_quadrant = temp_sprite_idx;
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}
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if (x == (sint16)0x8000){
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sprite->unknown.sprite_left = 0x8000;
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sprite->unknown.x = x;
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sprite->unknown.y = y;
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sprite->unknown.z = z;
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return;
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}
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sint16 new_x = x, new_y = y, start_x = x;
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switch (RCT2_GLOBAL(RCT2_ADDRESS_CURRENT_ROTATION, uint32)){
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case 0:
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new_x = new_y - new_x;
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new_y = (new_y + start_x) / 2 - z;
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break;
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case 1:
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new_x = -new_y - new_x;
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new_y = (new_y - start_x) / 2 - z;
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break;
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case 2:
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new_x = -new_y + new_x;
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new_y = (-new_y - start_x) / 2 - z;
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break;
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case 3:
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new_x = new_y + new_x;
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new_y = (-new_y + start_x) / 2 - z;
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break;
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}
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sprite->unknown.sprite_left = new_x - sprite->unknown.sprite_width;
|
|
sprite->unknown.sprite_right = new_x + sprite->unknown.sprite_width;
|
|
sprite->unknown.sprite_top = new_y - sprite->unknown.sprite_height_negative;
|
|
sprite->unknown.sprite_bottom = new_y + sprite->unknown.sprite_height_positive;
|
|
sprite->unknown.x = x;
|
|
sprite->unknown.y = y;
|
|
sprite->unknown.z = z;
|
|
}
|
|
|
|
/**
|
|
*
|
|
* rct2: 0x0069EDB6
|
|
*/
|
|
void sprite_remove(rct_sprite *sprite)
|
|
{
|
|
move_sprite_to_list(sprite, SPRITE_LINKEDLIST_OFFSET_NULL);
|
|
user_string_free(sprite->unknown.name_string_idx);
|
|
sprite->unknown.sprite_identifier = SPRITE_IDENTIFIER_NULL;
|
|
|
|
uint32 quadrantIndex = sprite->unknown.x;
|
|
if (sprite->unknown.x == SPRITE_LOCATION_NULL) {
|
|
quadrantIndex = 0x10000;
|
|
} else {
|
|
quadrantIndex = (floor2(sprite->unknown.x, 32) << 3) | (sprite->unknown.y >> 5);
|
|
}
|
|
|
|
uint16 *spriteIndex = &RCT2_ADDRESS(0x00F1EF60, uint16)[quadrantIndex];
|
|
rct_sprite *quadrantSprite;
|
|
while ((quadrantSprite = &g_sprite_list[*spriteIndex]) != sprite) {
|
|
spriteIndex = &quadrantSprite->unknown.next_in_quadrant;
|
|
}
|
|
*spriteIndex = sprite->unknown.next_in_quadrant;
|
|
}
|
|
|
|
static bool litter_can_be_at(int x, int y, int z)
|
|
{
|
|
rct_map_element *mapElement;
|
|
|
|
if (!map_is_location_owned(x & 0xFFE0, y & 0xFFE0, z))
|
|
return false;
|
|
|
|
mapElement = map_get_first_element_at(x >> 5, y >> 5);
|
|
do {
|
|
if (map_element_get_type(mapElement) != MAP_ELEMENT_TYPE_PATH)
|
|
continue;
|
|
|
|
int pathZ = mapElement->base_height * 8;
|
|
if (pathZ < z || pathZ >= z + 32)
|
|
continue;
|
|
|
|
if (map_element_is_underground(mapElement))
|
|
return false;
|
|
|
|
return true;
|
|
} while (!map_element_is_last_for_tile(mapElement++));
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
*
|
|
* rct2: 0x0067375D
|
|
*/
|
|
void litter_create(int x, int y, int z, int direction, int type)
|
|
{
|
|
rct_litter *litter, *newestLitter;
|
|
uint16 spriteIndex, nextSpriteIndex;
|
|
uint32 newestLitterCreationTick;
|
|
|
|
x += TileDirectionDelta[direction].x / 8;
|
|
y += TileDirectionDelta[direction].y / 8;
|
|
|
|
if (!litter_can_be_at(x, y, z))
|
|
return;
|
|
|
|
if (RCT2_GLOBAL(RCT2_ADDRESS_SPRITES_COUNT_LITTER, uint16) >= 500) {
|
|
newestLitter = NULL;
|
|
newestLitterCreationTick = 0;
|
|
for (spriteIndex = RCT2_GLOBAL(RCT2_ADDRESS_SPRITES_START_LITTER, uint16); spriteIndex != SPRITE_INDEX_NULL; spriteIndex = nextSpriteIndex) {
|
|
litter = &(g_sprite_list[spriteIndex].litter);
|
|
nextSpriteIndex = litter->next;
|
|
if (newestLitterCreationTick <= litter->creationTick) {
|
|
newestLitterCreationTick = litter->creationTick;
|
|
newestLitter = litter;
|
|
}
|
|
}
|
|
|
|
if (newestLitter != NULL) {
|
|
invalidate_sprite_0((rct_sprite*)newestLitter);
|
|
sprite_remove((rct_sprite*)newestLitter);
|
|
}
|
|
}
|
|
|
|
litter = (rct_litter*)create_sprite(1);
|
|
if (litter == NULL)
|
|
return;
|
|
|
|
move_sprite_to_list((rct_sprite*)litter, SPRITE_LINKEDLIST_OFFSET_LITTER);
|
|
litter->sprite_direction = direction;
|
|
litter->sprite_width = 6;
|
|
litter->sprite_height_negative = 6;
|
|
litter->sprite_height_positive = 3;
|
|
litter->sprite_identifier = SPRITE_IDENTIFIER_LITTER;
|
|
litter->type = type;
|
|
sprite_move(x, y, z, (rct_sprite*)litter);
|
|
invalidate_sprite_0((rct_sprite*)litter);
|
|
litter->creationTick = RCT2_GLOBAL(RCT2_ADDRESS_SCENARIO_TICKS, uint32);
|
|
}
|
|
|
|
/**
|
|
*
|
|
* rct2: 0x006738E1
|
|
*/
|
|
void litter_remove_at(int x, int y, int z)
|
|
{
|
|
uint16 spriteIndex = sprite_get_first_in_quadrant(x, y);
|
|
while (spriteIndex != SPRITE_INDEX_NULL) {
|
|
rct_sprite *sprite = &g_sprite_list[spriteIndex];
|
|
uint16 nextSpriteIndex = sprite->unknown.next_in_quadrant;
|
|
if (sprite->unknown.linked_list_type_offset == SPRITE_LINKEDLIST_OFFSET_LITTER) {
|
|
rct_litter *litter = &sprite->litter;
|
|
|
|
if (abs(litter->z - z) <= 16) {
|
|
if (abs(litter->x - x) <= 8 && abs(litter->y - y) <= 8) {
|
|
invalidate_sprite_0(sprite);
|
|
sprite_remove(sprite);
|
|
}
|
|
}
|
|
}
|
|
spriteIndex = nextSpriteIndex;
|
|
}
|
|
}
|