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OpenRCT2/src/viewport.c

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/*****************************************************************************
* Copyright (c) 2014 Ted John
* OpenRCT2, an open source clone of Roller Coaster Tycoon 2.
*
* This file is part of OpenRCT2.
*
* OpenRCT2 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 <assert.h>
#include "addresses.h"
#include "config.h"
#include "gfx.h"
#include "map.h"
#include "string_ids.h"
#include "sprite.h"
#include "sprites.h"
#include "viewport.h"
#include "window.h"
#define RCT2_FIRST_VIEWPORT (RCT2_ADDRESS(RCT2_ADDRESS_VIEWPORT_LIST, rct_viewport))
#define RCT2_LAST_VIEWPORT (RCT2_GLOBAL(RCT2_ADDRESS_NEW_VIEWPORT_PTR, rct_viewport*) - 1)
#define RCT2_NEW_VIEWPORT (RCT2_GLOBAL(RCT2_ADDRESS_NEW_VIEWPORT_PTR, rct_viewport*))
rct_viewport* g_viewport_list = RCT2_ADDRESS(RCT2_ADDRESS_VIEWPORT_LIST, rct_viewport);
typedef struct paint_struct paint_struct;
struct paint_struct{
uint32 image_id; // 0x00
uint32 var_04;
uint16 attached_x; // 0x08
uint16 attached_y; // 0x0A
uint8 var_0C;
uint8 pad_0D;
paint_struct* next_attached_ps; //0x0E
uint8 pad_12[2];
uint16 x; // 0x14
uint16 y; // 0x16
uint8 pad_18[2];
uint8 var_1A;
uint8 pad_1B;
paint_struct* attached_ps; //0x1C
paint_struct* var_20;
paint_struct* var_24;
uint8 sprite_type; //0x28
};
/**
* This is not a viewport function. It is used to setup many variables for
* multiple things.
* rct2: 0x006E6EAC
*/
void viewport_init_all()
{
int i, d;
rct_g1_element *g1_element;
// Palette from sprites?
d = 0;
for (i = 4915; i < 4947; i++) {
g1_element = &(RCT2_ADDRESS(RCT2_ADDRESS_G1_ELEMENTS, rct_g1_element)[i]);
*((int*)(0x0141FC44 + d)) = *((int*)(&g1_element->offset[0xF5]));
*((int*)(0x0141FC48 + d)) = *((int*)(&g1_element->offset[0xF9]));
*((int*)(0x0141FD44 + d)) = *((int*)(&g1_element->offset[0xFD]));
d += 8;
}
// Setting up windows
RCT2_GLOBAL(RCT2_ADDRESS_NEW_WINDOW_PTR, rct_window*) = g_window_list;
RCT2_GLOBAL(0x01423604, sint32) = 0;
// Setting up viewports
for (i = 0; i < 9; i++)
g_viewport_list[i].width = 0;
RCT2_NEW_VIEWPORT = NULL;
// ?
RCT2_GLOBAL(0x009DE518, sint32) = 0;
RCT2_GLOBAL(RCT2_ADDRESS_INPUT_STATE, sint8) = INPUT_STATE_RESET;
RCT2_GLOBAL(RCT2_ADDRESS_CURSOR_DOWN_WINDOWCLASS, rct_windowclass) = -1;
RCT2_GLOBAL(RCT2_ADDRESS_PICKEDUP_PEEP_SPRITE, sint32) = -1;
RCT2_GLOBAL(RCT2_ADDRESS_TOOLTIP_NOT_SHOWN_TICKS, sint16) = -1;
RCT2_GLOBAL(RCT2_ADDRESS_MAP_SELECTION_FLAGS, sint16) = 0;
RCT2_GLOBAL(0x009DEA50, sint16) = -1;
RCT2_CALLPROC_EBPSAFE(0x006EE3C3);
format_string((char*)0x0141FA44, STR_CANCEL, NULL);
format_string((char*)0x0141F944, STR_OK, NULL);
}
/**
* rct:0x006EB0C1
* x : ax
* y : bx
* z : cx
* out_x : ax
* out_y : bx
* Converts between 3d point of a sprite to 2d coordinates for centering on that sprite
*/
void center_2d_coordinates(int x, int y, int z, int* out_x, int* out_y, rct_viewport* viewport){
int start_x = x;
switch (RCT2_GLOBAL(RCT2_ADDRESS_CURRENT_ROTATION, uint32)){
case 0:
x = y - x;
y = (y + start_x) / 2 - z;
break;
case 1:
x = -y - x;
y = (y - start_x) / 2 - z;
break;
case 2:
x = -y + x;
y = (-y - start_x) / 2 - z;
break;
case 3:
x = y + x;
y = (-y + start_x) / 2 - z;
break;
}
*out_x = x - viewport->view_width/2;
*out_y = y - viewport->view_height/2;
}
/**
*
* rct2: 0x006EB009
* x: ax
* y: eax (top 16)
* width: bx
* height: ebx (top 16)
* zoom: cl (8 bits)
* center_x: edx lower 16 bits
* center_y: edx upper 16 bits
* center_z: ecx upper 16 bits
* sprite: edx lower 16 bits
* flags: edx top most 2 bits 0b_X1 for zoom clear see below for 2nd bit.
* w: esi
*
* Viewport will look at sprite or at coordinates as specified in flags 0b_1X for sprite 0b_0X for coordinates
*/
void viewport_create(rct_window *w, int x, int y, int width, int height, int zoom, int center_x, int center_y, int center_z, char flags, sint16 sprite)
{
rct_viewport* viewport;
for (viewport = g_viewport_list; viewport->width != 0; viewport++){
if (viewport >= RCT2_ADDRESS(RCT2_ADDRESS_NEW_VIEWPORT_PTR, rct_viewport)){
error_string_quit(0xFF000001, -1);
}
}
viewport->x = x;
viewport->y = y;
viewport->width = width;
viewport->height = height;
if (!(flags & VIEWPORT_FOCUS_TYPE_COORDINATE)){
zoom = 0;
}
viewport->view_width = width << zoom;
viewport->view_height = height << zoom;
viewport->zoom = zoom;
viewport->flags = 0;
if (RCT2_GLOBAL(RCT2_ADDRESS_CONFIG_KEYBOARD_SHORTCUTS, uint8) & 1){
viewport->flags |= VIEWPORT_FLAG_GRIDLINES;
}
w->viewport = viewport;
if (flags & VIEWPORT_FOCUS_TYPE_SPRITE){
w->viewport_target_sprite = sprite;
rct_sprite* center_sprite = &g_sprite_list[sprite];
center_x = center_sprite->unknown.x;
center_y = center_sprite->unknown.y;
center_z = center_sprite->unknown.z;
}
else{
w->viewport_target_sprite = SPR_NONE;
}
int view_x, view_y;
center_2d_coordinates(center_x, center_y, center_z, &view_x, &view_y, viewport);
w->saved_view_x = view_x;
w->saved_view_y = view_y;
viewport->view_x = view_x;
viewport->view_y = view_y;
viewport_update_pointers();
//x &= 0xFFFF;
//y &= 0xFFFF;
//RCT2_CALLPROC_X(0x006EB009, (y << 16) | x, (height << 16) | width, zoom, edx, (int)w, 0, 0);
}
/**
*
* rct2: 0x006EE510
*/
void viewport_update_pointers()
{
rct_viewport *viewport;
rct_viewport **vp = RCT2_ADDRESS(RCT2_ADDRESS_NEW_VIEWPORT_PTR, rct_viewport*);
if (*vp == NULL) *vp = g_viewport_list;
for (viewport = g_viewport_list; viewport <= RCT2_NEW_VIEWPORT; viewport++)
if (viewport->width != 0)
*vp++ = viewport;
*vp = NULL;
}
void sub_689174(sint16* x, sint16* y, sint16 *z, uint8 curr_rotation){
//RCT2_CALLFUNC_X(0x00689174, (int*)&x, (int*)&y, (int*)&z, &curr_rotation, (int*)&window, (int*)&viewport, &ebp);
sint16 start_x = *x;
sint16 start_y = *y;
sint16 height = 0;
switch (curr_rotation){
case 0:
for (int i = 0; i < 6; ++i){
*x = start_y - start_x / 2 + height;
*y = start_y + start_x / 2 + height;
height = map_element_height((0xFFFF) & *x, (0xFFFF) & *y);
}
break;
case 1:
for (int i = 0; i < 6; ++i){
*x = -start_y - start_x / 2 - height;
*y = start_y - start_x / 2 + height;
height = map_element_height((0xFFFF) & *x, (0xFFFF) & *y);
}
break;
case 2:
for (int i = 0; i < 6; ++i){
*x = -start_y + start_x / 2 - height;
*y = -start_y - start_x / 2 - height;
height = map_element_height((0xFFFF) & *x, (0xFFFF) & *y);
}
break;
case 3:
for (int i = 0; i < 6; ++i){
*x = start_x / 2 + start_y + height;
*y = start_x / 2 - start_y - height;
height = map_element_height((0xFFFF) & *x, (0xFFFF) & *y);
}
break;
}
*z = height;
}
/**
*
* rct2: 0x006E7A3A
*/
void viewport_update_position(rct_window *window)
{
//RCT2_CALLPROC_X(0x006E7A3A, 0, 0, 0, 0, (int)window, 0, 0);
RCT2_CALLPROC_X(window->event_handlers[WE_RESIZE], 0, 0, 0, 0, (int)window, 0, 0);
rct_viewport* viewport = window->viewport;
if (!viewport)return;
if (window->viewport_target_sprite != -1){
rct_sprite* sprite = &g_sprite_list[window->viewport_target_sprite];
int height = map_element_height(0xFFFF & sprite->unknown.x, 0xFFFF & sprite->unknown.y) - 16;
int underground = sprite->unknown.z < height;
RCT2_CALLPROC_X(0x6E7A15, sprite->unknown.x, sprite->unknown.y, sprite->unknown.z, underground, (int)window, (int)viewport, 0);
int center_x, center_y;
center_2d_coordinates(sprite->unknown.x, sprite->unknown.y, sprite->unknown.z, &center_x, &center_y, window->viewport);
RCT2_CALLPROC_X(0x6E7DE1, center_x, center_y, 0, 0, (int)window, (int)viewport, 0);
window_invalidate(window);//Added to force a redraw.
return;
}
sint16 x = viewport->view_width / 2 + window->saved_view_x;
sint16 y = viewport->view_height / 2 + window->saved_view_y;
sint16 z;
int curr_rotation = RCT2_GLOBAL(RCT2_ADDRESS_CURRENT_ROTATION, uint32);
sub_689174(&x, &y, &z, curr_rotation);
RCT2_CALLPROC_X(0x006E7A15, x, y, z, 0, (int)window, (int)viewport, 0);
//Clamp to the map minimum value
int at_map_edge = 0;
if (x < MAP_MINIMUM_X_Y){
x = MAP_MINIMUM_X_Y;
at_map_edge = 1;
}
if (y < MAP_MINIMUM_X_Y){
y = MAP_MINIMUM_X_Y;
at_map_edge = 1;
}
//Clamp to the map maximum value (scenario specific)
if (x > RCT2_GLOBAL(RCT2_ADDRESS_MAP_MAXIMUM_X_Y, sint16)){
x = RCT2_GLOBAL(RCT2_ADDRESS_MAP_MAXIMUM_X_Y, sint16);
at_map_edge = 1;
}
if (y > RCT2_GLOBAL(RCT2_ADDRESS_MAP_MAXIMUM_X_Y, sint16)){
y = RCT2_GLOBAL(RCT2_ADDRESS_MAP_MAXIMUM_X_Y, sint16);
at_map_edge = 1;
}
if (at_map_edge) {
// The &0xFFFF is to prevent the sign extension messing the
// function up.
int z = map_element_height(x & 0xFFFF, y & 0xFFFF);
int _2d_x, _2d_y;
center_2d_coordinates(x, y, z, &_2d_x, &_2d_y, viewport);
if (window->saved_view_x > 0){
_2d_x = min(_2d_x, window->saved_view_x);
}
else{
_2d_x = max(_2d_x, window->saved_view_x);
}
if (window->saved_view_y > 0){
_2d_y = min(_2d_y, window->saved_view_y);
}
else{
_2d_y = max(_2d_y, window->saved_view_y);
}
window->saved_view_x = _2d_x;
window->saved_view_y = _2d_y;
}
x = window->saved_view_x;
y = window->saved_view_y;
if (window->flags & WF_SCROLLING_TO_LOCATION){
// Moves the viewport if focusing in on an item
uint8 flags = 0;
x -= viewport->view_x;
if (x < 0){
x = -x;
flags |= 1;
}
y -= viewport->view_y;
if (y < 0){
y = -y;
flags |= 2;
}
x = (x + 7)/8;
y = (y + 7)/8;
//If we are at the final zoom position
if (!x && !y){
window->flags &= ~WF_SCROLLING_TO_LOCATION;
}
if (flags & 1){
x = -x;
}
if (flags & 2){
y = -y;
}
x += viewport->view_x;
y += viewport->view_y;
}
RCT2_CALLPROC_X(0x6E7DE1, x, y, 0, 0, (int)window, (int)viewport, 0);
}
void viewport_paint(rct_viewport* viewport, rct_drawpixelinfo* dpi, int left, int top, int right, int bottom);
/**
*
* rct2: 0x00685C02
* ax: left
* bx: top
* dx: right
* esi: viewport
* edi: dpi
* ebp: bottom
*/
void viewport_render(rct_drawpixelinfo *dpi, rct_viewport *viewport, int left, int top, int right, int bottom)
{
if (right <= viewport->x) return;
if (bottom <= viewport->y) return;
if (left >= viewport->x + viewport->width )return;
if (top >= viewport->y + viewport->height )return;
left = max(left - viewport->x, 0);
right = min(right - viewport->x, viewport->width);
top = max(top - viewport->y, 0);
bottom = min(bottom - viewport->y, viewport->height);
left <<= viewport->zoom;
right <<= viewport->zoom;
top <<= viewport->zoom;
bottom <<= viewport->zoom;
left += viewport->view_x;
right += viewport->view_x;
top += viewport->view_y;
bottom += viewport->view_y;
int height = bottom - top;
if (height > 384){
//Paint
viewport_paint(viewport, dpi, left, top, right, top + 384);
top += 384;
}
//Paint
viewport_paint(viewport, dpi, left, top, right, bottom);
}
/**
*
* rct2: 0x0068615B
* ebp: ebp
*/
void sub_0x68615B(int ebp){
RCT2_GLOBAL(0xEE7888, uint32) = ebp;
RCT2_GLOBAL(0xF1AD28, uint32) = 0;
RCT2_GLOBAL(0xF1AD2C, uint32) = 0;
uint8* edi = RCT2_ADDRESS(0xF1A50C, uint8);
memset(edi, 0, 2048);
RCT2_GLOBAL(0xF1AD0C, sint32) = -1;
RCT2_GLOBAL(0xF1AD10, uint32) = 0;
RCT2_GLOBAL(0xF1AD20, uint32) = 0;
RCT2_GLOBAL(0xF1AD24, uint32) = 0;
}
/***
*
* rct2: 0x00688596
* Part of 0x688485
*/
void paint_attached_ps(paint_struct* ps, paint_struct* attached_ps, rct_drawpixelinfo* dpi){
for (; attached_ps; attached_ps = attached_ps->next_attached_ps){
sint16 x = attached_ps->attached_x + ps->x;
sint16 y = attached_ps->attached_y + ps->y;
int image_id = attached_ps->image_id;
if (RCT2_GLOBAL(RCT2_ADDRESS_CURRENT_VIEWPORT_FLAGS, uint16) & VIEWPORT_FLAG_SEETHROUGH_RIDES){
if (ps->sprite_type == 3){
if (image_id & 0x40000000){
image_id &= 0x7FFFF;
image_id |= 0x41880000;
}
}
}
if (RCT2_GLOBAL(RCT2_ADDRESS_CURRENT_VIEWPORT_FLAGS, uint16) & VIEWPORT_FLAG_SEETHROUGH_SCENERY){
if (ps->sprite_type == 5){
if (image_id & 0x40000000){
image_id &= 0x7FFFF;
image_id |= 0x41880000;
}
}
}
if (!(attached_ps->var_0C & 1)){
gfx_draw_sprite(dpi, image_id, x, y, ps->var_04);
}
else{
RCT2_CALLPROC_X(0x00681DE2, 0, image_id, x, y, 0, (int)dpi, attached_ps->var_04);
}
}
}
void sub_688485(){
//RCT2_CALLPROC_EBPSAFE(0x688485);
//return;
rct_drawpixelinfo* dpi = RCT2_GLOBAL(0x140E9A8, rct_drawpixelinfo*);
paint_struct* ps = RCT2_GLOBAL(0xEE7884, paint_struct*);
paint_struct* previous_ps = ps->var_24;
for (ps = ps->var_24; ps;){
sint16 x = ps->x;
sint16 y = ps->y;
if (ps->sprite_type == 2){
if (dpi->zoom_level >= 1){
x &= 0xFFFE;
y &= 0xFFFE;
if (dpi->zoom_level >= 2){
x &= 0xFFFC;
y &= 0xFFFC;
}
}
}
int image_id = ps->image_id;
if (RCT2_GLOBAL(RCT2_ADDRESS_CURRENT_VIEWPORT_FLAGS, uint16) & VIEWPORT_FLAG_SEETHROUGH_RIDES){
if (ps->sprite_type == 3){
if (!(image_id & 0x40000000)){
image_id &= 0x7FFFF;
image_id |= 0x41880000;
}
}
}
if (RCT2_GLOBAL(RCT2_ADDRESS_CURRENT_VIEWPORT_FLAGS, uint16) & VIEWPORT_FLAG_UNDERGROUND_INSIDE){
if (ps->sprite_type == 9){
if (!(image_id & 0x40000000)){
image_id &= 0x7FFFF;
image_id |= 0x41880000;
}
}
}
if (RCT2_GLOBAL(RCT2_ADDRESS_CURRENT_VIEWPORT_FLAGS, uint16) & VIEWPORT_FLAG_SEETHROUGH_SCENERY){
if (ps->sprite_type == 10 || ps->sprite_type == 12 || ps->sprite_type == 9 || ps->sprite_type == 5){
if (!(image_id & 0x40000000)){
image_id &= 0x7FFFF;
image_id |= 0x41880000;
}
}
}
if (!(ps->var_1A & 1))
gfx_draw_sprite(dpi, image_id, x, y, ps->var_04);
else
RCT2_CALLPROC_X(0x00681DE2, 0, image_id, x, y, 0, (int)dpi, ps->var_04);
if (ps->var_20 != 0){
ps = ps->var_20;
continue;
}
paint_attached_ps(ps, ps->attached_ps, dpi);
ps = previous_ps->var_24;
previous_ps = ps;
}
}
int sub_0x686806(rct_sprite* sprite, int eax, int ecx, int edx){
int ebp = (eax >> 8) & 0xFF;
edx <<= 16;
ebp += RCT2_GLOBAL(0x9DEA56, uint16);
RCT2_GLOBAL(0xF1AD28, uint32) = 0;
RCT2_GLOBAL(0xF1AD2C, uint32) = 0;
edx = (edx >> 16) | (ebp << 16);
ebp = RCT2_GLOBAL(0xEE7888, uint32);
if ((uint32)ebp >= RCT2_GLOBAL(0xEE7880, uint32)) return 1;
//686840 not finished
return 0;
}
/**
* Litter Paint Setup??
* rct2: 0x006736FC
*/
void sub_0x6736FC(rct_litter* litter, int ebx, int edx){
rct_drawpixelinfo* dpi;
dpi = RCT2_GLOBAL(0x140E9A8, rct_drawpixelinfo*);
if (dpi->zoom_level != 0)return; //If zoomed at all no litter drawn
int ebp = litter->var_01;
//push litter
ebx >>= 3;
ebx &= RCT2_ADDRESS(0x97EF6C, uint32)[ebp * 2 + 1];
ebx += RCT2_ADDRESS(0x97EF6C, uint32)[ebp * 2];
int ecx = 0;
int edi = 4;
int esi = 4;
int eax = 0xFF00;
RCT2_GLOBAL(0x9DEA52, uint16) = 0xFFFC;
RCT2_GLOBAL(0x9DEA54, uint16) = 0xFFFC;
RCT2_GLOBAL(0x9DEA56, uint16) = edx + 2;
switch (RCT2_GLOBAL(RCT2_ADDRESS_CURRENT_ROTATION,uint32)){
case 0:
//0x686806
break;
case 1:
//0x6869b2
break;
case 2:
//0x686b6f
break;
case 3:
//0x686d31
break;
}
}
/**
* Paint Quadrant
* rct2: 0x0069E8B0
*/
void sub_0x69E8B0(uint32 eax, uint32 ecx){
uint32 _eax = eax, _ecx = ecx;
rct_drawpixelinfo* dpi;
if (RCT2_GLOBAL(0x9DEA6F,uint8) & 1) return;
dpi = RCT2_GLOBAL(0x140E9A8,rct_drawpixelinfo*);
if (RCT2_GLOBAL(RCT2_ADDRESS_CURRENT_VIEWPORT_FLAGS, uint16) & 0x4000)return;
if (dpi->zoom_level > 2) return;
if (eax > 0x2000)return;
if (ecx > 0x2000)return;
//push eax, ecx
eax = (eax&0x1FE0)<<3 | (ecx>>5);
int sprite_idx = RCT2_ADDRESS(0xF1EF60, uint16)[eax];
if (sprite_idx == SPRITE_INDEX_NULL) return;
for (rct_sprite* spr = &g_sprite_list[sprite_idx]; sprite_idx != SPRITE_INDEX_NULL; sprite_idx = spr->unknown.var_02){
spr = &g_sprite_list[sprite_idx];
dpi = RCT2_GLOBAL(0x140E9A8, rct_drawpixelinfo*);
if (dpi->y + dpi->height <= spr->unknown.var_18) continue;
if (spr->unknown.var_1C <= dpi->y)continue;
if (dpi->x + dpi->width <= spr->unknown.var_16)continue;
if (spr->unknown.var_1A <= dpi->x)continue;
int ebx = RCT2_GLOBAL(RCT2_ADDRESS_CURRENT_ROTATION, uint32);
RCT2_GLOBAL(0x9DE578, uint32) = (uint32)spr;
int ebp = spr->unknown.sprite_identifier;
ebx <<= 3;
eax = spr->unknown.x;
ebx += spr->unknown.sprite_direction;
ecx = spr->unknown.y;
ebx &= 0x1F;
RCT2_GLOBAL(0x9DE568, uint16) = spr->unknown.x;
RCT2_GLOBAL(0x9DE570, uint8) = 2;
RCT2_GLOBAL(0x9DE56C, uint16) = spr->unknown.y;
int edx = spr->unknown.z;
switch (spr->unknown.sprite_identifier){
case SPRITE_IDENTIFIER_VEHICLE:
RCT2_CALLPROC_X(0x6D4244, eax, ebx, ecx, edx, (int)spr, (int)dpi, ebp);
break;
case SPRITE_IDENTIFIER_PEEP:
RCT2_CALLPROC_X(0x68F0FB, eax, ebx, ecx, edx, (int)spr, (int)dpi, ebp);
break;
case SPRITE_IDENTIFIER_FLOATING_TEXT:
RCT2_CALLPROC_X(0x672AC9, eax, ebx, ecx, edx, (int)spr, (int)dpi, ebp);
break;
case SPRITE_IDENTIFIER_LITTER:
RCT2_CALLPROC_X(0x6736FC, eax, ebx, ecx, edx, (int)spr, (int)dpi, ebp);
break;
//I am pretty sure there are no other sprite identifier types
}
//RCT2_CALLPROC_X(RCT2_ADDRESS(0x98BC40,uint32)[spr->unknown.sprite_identifier], eax, ebx, ecx, edx, (int)spr, (int)dpi, ebp);
}
//RCT2_CALLPROC_X(0x69E8B0, _eax, 0, _ecx, 0, 0, 0, 0);
//return;
}
/**
*
* rct2: 0x0068B6C2
*/
void sub_0x68B6C2(){
rct_drawpixelinfo* dpi = RCT2_GLOBAL(0x140E9A8, rct_drawpixelinfo*);
sint16 ax, bx, cx, dx;
switch (RCT2_GLOBAL(RCT2_ADDRESS_CURRENT_ROTATION, uint32)){
case 0:
ax = dpi->y;
bx = dpi->x;
ax -= 16;
bx &= 0xFFE0;
ax &= 0xFFE0;
bx >>= 1;
cx = ax;
ax -= bx;
cx += bx;
ax &= 0xFFE0;
cx &= 0xFFE0;
dx = dpi->height;
dx += 2128;
dx >>= 5;
for (int i = dx; i > 0; --i){
RCT2_CALLPROC_X(0x68B35F, ax, 0, cx, 0, 0, 0, 0);
sub_0x69E8B0(ax, cx);
cx += 0x20;
ax -= 0x20;
sub_0x69E8B0(ax, cx);
ax += 0x20;
RCT2_CALLPROC_X(0x68B35F, ax, 0, cx, 0, 0, 0, 0);
sub_0x69E8B0(ax, cx);
ax += 0x20;
cx -= 0x20;
sub_0x69E8B0(ax, cx);
cx += 0x20;
}
break;
case 1:
ax = dpi->y;
bx = dpi->x;
ax -= 0x10;
bx &= 0xFFE0;
ax &= 0xFFE0;
bx >>= 1;
cx = ax;
ax = -ax;
ax -= bx;
cx -= bx;
cx -= 0x10;
ax &= 0xFFE0;
cx &= 0xFFE0;
dx = dpi->height;
dx += 0x860;
dx >>= 5;
for (int i = dx; i > 0; i--){
RCT2_CALLPROC_X(0x68B35F, ax, 0, cx, 0, 0, 0, 0);
sub_0x69E8B0(ax, cx);
ax -= 0x20;
cx -= 0x20;
sub_0x69E8B0(ax, cx);
cx += 0x20;
RCT2_CALLPROC_X(0x68B35F, ax, 0, cx, 0, 0, 0, 0);
sub_0x69E8B0(ax, cx);
ax += 0x20;
cx += 0x20;
sub_0x69E8B0(ax, cx);
ax -= 0x20;
}
break;
case 2:
ax = dpi->y;
bx = dpi->x;
ax -= 0x10;
bx &= 0xFFE0;
ax &= 0xFFE0;
bx >>= 1;
ax = -ax;
cx = ax;
ax += bx;
cx -= bx;
ax &= 0xFFE0;
cx &= 0xFFE0;
dx = dpi->height;
dx += 0x860;
dx >>= 5;
for (int i = dx; i > 0; i--){
RCT2_CALLPROC_X(0x68B35F, ax, 0, cx, 0, 0, 0, 0);
sub_0x69E8B0(ax, cx);
ax += 0x20;
cx -= 0x20;
sub_0x69E8B0(ax, cx);
ax -= 0x20;
RCT2_CALLPROC_X(0x68B35F, ax, 0, cx, 0, 0, 0, 0);
sub_0x69E8B0(ax, cx);
ax -= 0x20;
cx += 0x20;
sub_0x69E8B0(ax, cx);
cx -= 0x20;
}
break;
case 3:
ax = dpi->y;
bx = dpi->x;
ax -= 0x10;
bx &= 0xFFE0;
ax &= 0xFFE0;
bx >>= 1;
cx = ax;
ax += bx;
cx = -cx;
cx += bx;
cx -= 0x10;
ax &= 0xFFE0;
cx &= 0xFFE0;
dx = dpi->height;
dx += 0x860;
dx >>= 5;
for (int i = dx; i > 0; i--){
RCT2_CALLPROC_X(0x68B35F, ax, 0, cx, 0, 0, 0, 0);
sub_0x69E8B0(ax, cx);
ax += 0x20;
cx += 0x20;
sub_0x69E8B0(ax, cx);
cx -= 0x20;
RCT2_CALLPROC_X(0x68B35F, ax, 0, cx, 0, 0, 0, 0);
sub_0x69E8B0(ax, cx);
ax -= 0x20;
cx -= 0x20;
sub_0x69E8B0(ax, cx);
ax += 0x20;
}
break;
}
}
/**
*
* rct2:0x00685CBF
* eax: left
* ebx: top
* edx: right
* esi: viewport
* edi: dpi
* ebp: bottom
*/
void viewport_paint(rct_viewport* viewport, rct_drawpixelinfo* dpi, int left, int top, int right, int bottom){
//RCT2_CALLPROC_X(0x00685CBF, left, top, 0, right, (int)viewport, (int)dpi, bottom);
//return;
RCT2_GLOBAL(RCT2_ADDRESS_CURRENT_VIEWPORT_FLAGS, uint16) = viewport->flags;
RCT2_GLOBAL(RCT2_ADDRESS_VIEWPORT_ZOOM, uint16) = viewport->zoom;
uint16 width = right - left;
uint16 height = bottom - top;
uint16 bitmask = 0xFFFF & (0xFFFF << viewport->zoom);
width &= bitmask;
height &= bitmask;
left &= bitmask;
top &= bitmask;
RCT2_GLOBAL(RCT2_ADDRESS_VIEWPORT_PAINT_X, uint16) = left;
RCT2_GLOBAL(RCT2_ADDRESS_VIEWPORT_PAINT_Y, uint16) = top;
RCT2_GLOBAL(RCT2_ADDRESS_VIEWPORT_PAINT_WIDTH, uint16) = width;
RCT2_GLOBAL(RCT2_ADDRESS_VIEWPORT_PAINT_HEIGHT, uint16) = height;
width >>= viewport->zoom;
RCT2_GLOBAL(RCT2_ADDRESS_VIEWPORT_PAINT_PITCH, uint16) = (dpi->width + dpi->pitch) - width;
int x = (sint16)(left - (sint16)(viewport->view_x & bitmask));
x >>= viewport->zoom;
x += viewport->x;
int y = (sint16)(top - (sint16)(viewport->view_y & bitmask));
y >>= viewport->zoom;
y += viewport->y;
uint8* bits_pointer = x - dpi->x + (y - dpi->y)*(dpi->width + dpi->pitch) + dpi->bits;
RCT2_GLOBAL(RCT2_ADDRESS_VIEWPORT_PAINT_BITS_PTR, uint8*) = bits_pointer;
rct_drawpixelinfo* dpi2 = RCT2_ADDRESS(RCT2_ADDRESS_VIEWPORT_DPI, rct_drawpixelinfo);
dpi2->y = RCT2_GLOBAL(RCT2_ADDRESS_VIEWPORT_PAINT_Y, uint16);
dpi2->height = RCT2_GLOBAL(RCT2_ADDRESS_VIEWPORT_PAINT_HEIGHT, uint16);
dpi2->zoom_level = (uint8)RCT2_GLOBAL(RCT2_ADDRESS_VIEWPORT_ZOOM, uint16);
//Splits the screen into 32 pixel columns and renders them.
for (x = RCT2_GLOBAL(RCT2_ADDRESS_VIEWPORT_PAINT_X, uint16) & 0xFFFFFFE0;
x < RCT2_GLOBAL(RCT2_ADDRESS_VIEWPORT_PAINT_X, uint16) + RCT2_GLOBAL(RCT2_ADDRESS_VIEWPORT_PAINT_WIDTH, uint16);
x += 32){
int start_x = RCT2_GLOBAL(RCT2_ADDRESS_VIEWPORT_PAINT_X, uint16);
int width_col = RCT2_GLOBAL(RCT2_ADDRESS_VIEWPORT_PAINT_WIDTH, uint16);
bits_pointer = RCT2_GLOBAL(RCT2_ADDRESS_VIEWPORT_PAINT_BITS_PTR, uint8*);
int pitch = RCT2_GLOBAL(RCT2_ADDRESS_VIEWPORT_PAINT_PITCH, uint16);
int zoom = RCT2_GLOBAL(RCT2_ADDRESS_VIEWPORT_ZOOM, uint16);
if (x >= start_x){
int left_pitch = x - start_x;
width_col -= left_pitch;
bits_pointer += left_pitch >> zoom;
pitch += left_pitch >> zoom;
start_x = x;
}
int paint_right = start_x + width_col;
if (paint_right >= x + 32){
int right_pitch = paint_right - x - 32;
paint_right -= right_pitch;
pitch += right_pitch >> zoom;
}
width_col = paint_right - start_x;
dpi2->x = start_x;
dpi2->width = width_col;
dpi2->bits = bits_pointer;
dpi2->pitch = pitch;
if (RCT2_GLOBAL(RCT2_ADDRESS_CURRENT_VIEWPORT_FLAGS, uint16) & 0x3001){
uint8 colour = 0x0A;
if (RCT2_GLOBAL(RCT2_ADDRESS_CURRENT_VIEWPORT_FLAGS, uint16) & 0x4000){
colour = 0;
}
gfx_clear(dpi2, colour);
}
RCT2_GLOBAL(0xEE7880, uint32) = 0xF1A4CC;
RCT2_GLOBAL(0x140E9A8, uint32) = (int)dpi2;
int ebp = 0, ebx = 0, esi = 0, ecx = 0;
sub_0x68615B(0xEE788C); //Memory copy
sub_0x68B6C2();
//RCT2_CALLPROC_X(0x68B6C2, 0, 0, 0, 0, 0, 0, 0); //Big function call 4 rotation versions
RCT2_CALLPROC_X(0x688217, start_x, ebx, ecx, (int)bits_pointer, esi, (int)dpi2, ebp); //Move memory
sub_688485();
//RCT2_CALLPROC_EBPSAFE(0x688485); //Big function call
int weather_colour = RCT2_ADDRESS(0x98195C, uint32)[RCT2_GLOBAL(RCT2_ADDRESS_CURRENT_WEATHER_GLOOM, uint8)];
if ((weather_colour != -1) && (RCT2_GLOBAL(RCT2_ADDRESS_CURRENT_VIEWPORT_FLAGS, uint16) & 0x4000) && (RCT2_GLOBAL(0x9DEA6F, uint8) & 1)){
dpi2 = RCT2_GLOBAL(0x140E9A8, rct_drawpixelinfo*);
gfx_fill_rect(dpi2, dpi2->x, dpi2->y, dpi2->width + dpi2->x - 1, dpi2->height + dpi2->y - 1, weather_colour);
}
RCT2_CALLPROC_EBPSAFE(0x6860C3); //string related
}
//RCT2_CALLPROC_X(0x00685CBF, left, top, 0, right, (int)viewport, (int)dpi, bottom);
}
/**
*
* rct2: 0x0068958D
*/
void screen_pos_to_map_pos(short *x, short *y)
{
int eax, ebx, ecx, edx, esi, edi, ebp;
eax = *x;
ebx = *y;
RCT2_CALLFUNC_X(0x0068958D, &eax, &ebx, &ecx, &edx, &esi, &edi, &ebp);
*x = eax & 0xFFFF;
*y = ebx & 0xFFFF;
}
/**
*
* rct2: 0x00664689
*/
void show_gridlines()
{
rct_window *mainWindow;
if (RCT2_GLOBAL(0x009E32B0, uint8) == 0) {
if ((mainWindow = window_get_main()) != NULL) {
if (!(mainWindow->viewport->flags & VIEWPORT_FLAG_GRIDLINES)) {
mainWindow->viewport->flags |= VIEWPORT_FLAG_GRIDLINES;
window_invalidate(mainWindow);
}
}
}
RCT2_GLOBAL(0x009E32B0, uint8)++;
}
/**
*
* rct2: 0x006646B4
*/
void hide_gridlines()
{
rct_window *mainWindow;
RCT2_GLOBAL(0x009E32B0, uint8)--;
if (RCT2_GLOBAL(0x009E32B0, uint8) == 0) {
if ((mainWindow = window_get_main()) != NULL) {
if (!(RCT2_GLOBAL(RCT2_ADDRESS_CONFIG_FLAGS, uint8) & CONFIG_FLAG_ALWAYS_SHOW_GRIDLINES)) {
mainWindow->viewport->flags &= ~VIEWPORT_FLAG_GRIDLINES;
window_invalidate(mainWindow);
}
}
}
}
/**
*
* rct2: 0x00664E8E
*/
void show_land_rights()
{
rct_window *mainWindow;
if (RCT2_GLOBAL(0x009E32B2, uint8) != 0) {
if ((mainWindow = window_get_main()) != NULL) {
if (!(mainWindow->viewport->flags & VIEWPORT_FLAG_LAND_OWNERSHIP)) {
mainWindow->viewport->flags |= VIEWPORT_FLAG_LAND_OWNERSHIP;
window_invalidate(mainWindow);
}
}
}
RCT2_GLOBAL(0x009E32B2, uint8)++;
}
/**
*
* rct2: 0x00664E8E
*/
void hide_land_rights()
{
rct_window *mainWindow;
RCT2_GLOBAL(0x009E32B2, uint8)--;
if (RCT2_GLOBAL(0x009E32B2, uint8) == 0) {
if ((mainWindow = window_get_main()) != NULL) {
if (mainWindow->viewport->flags & VIEWPORT_FLAG_LAND_OWNERSHIP) {
mainWindow->viewport->flags &= ~VIEWPORT_FLAG_LAND_OWNERSHIP;
window_invalidate(mainWindow);
}
}
}
}
/**
*
* rct2: 0x00664EDD
*/
void show_construction_rights()
{
rct_window *mainWindow;
if (RCT2_GLOBAL(0x009E32B3, uint8) != 0) {
if ((mainWindow = window_get_main()) != NULL) {
if (!(mainWindow->viewport->flags & VIEWPORT_FLAG_CONSTRUCTION_RIGHTS)) {
mainWindow->viewport->flags |= VIEWPORT_FLAG_CONSTRUCTION_RIGHTS;
window_invalidate(mainWindow);
}
}
}
RCT2_GLOBAL(0x009E32B3, uint8)++;
}
/**
*
* rct2: 0x00664F08
*/
void hide_construction_rights()
{
rct_window *mainWindow;
RCT2_GLOBAL(0x009E32B3, uint8)--;
if (RCT2_GLOBAL(0x009E32B3, uint8) == 0) {
if ((mainWindow = window_get_main()) != NULL) {
if (mainWindow->viewport->flags & VIEWPORT_FLAG_CONSTRUCTION_RIGHTS) {
mainWindow->viewport->flags &= ~VIEWPORT_FLAG_CONSTRUCTION_RIGHTS;
window_invalidate(mainWindow);
}
}
}
}
/**
*
* rct2: 0x006CB70A
*/
void viewport_set_visibility(uint8 mode)
{
rct_window* window = window_get_main();
if(window != NULL) {
rct_viewport* edi = window->viewport;
uint32 invalidate = 0;
switch(mode) {
case 0: { //Set all these flags to 0, and invalidate if any were active
uint16 mask = VIEWPORT_FLAG_UNDERGROUND_INSIDE | VIEWPORT_FLAG_SEETHROUGH_RIDES |
VIEWPORT_FLAG_SEETHROUGH_SCENERY | VIEWPORT_FLAG_INVISIBLE_SUPPORTS |
VIEWPORT_FLAG_LAND_HEIGHTS | VIEWPORT_FLAG_TRACK_HEIGHTS |
VIEWPORT_FLAG_PATH_HEIGHTS | VIEWPORT_FLAG_INVISIBLE_PEEPS |
VIEWPORT_FLAG_HIDE_BASE | VIEWPORT_FLAG_HIDE_VERTICAL;
invalidate += edi->flags & mask;
edi->flags &= ~mask;
break;
}
case 1: //6CB79D
case 4: //6CB7C4
//Set underground on, invalidate if it was off
invalidate += !(edi->flags & VIEWPORT_FLAG_UNDERGROUND_INSIDE);
edi->flags |= VIEWPORT_FLAG_UNDERGROUND_INSIDE;
break;
case 2: //6CB7EB
//Set track heights on, invalidate if off
invalidate += !(edi->flags & VIEWPORT_FLAG_TRACK_HEIGHTS);
edi->flags |= VIEWPORT_FLAG_TRACK_HEIGHTS;
break;
case 3: //6CB7B1
case 5: //6CB7D8
//Set underground off, invalidate if it was on
invalidate += edi->flags & VIEWPORT_FLAG_UNDERGROUND_INSIDE;
edi->flags &= ~((uint16)VIEWPORT_FLAG_UNDERGROUND_INSIDE);
break;
}
if (invalidate != 0)
window_invalidate(window);
}
}
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