mirror of https://github.com/OpenRCT2/OpenRCT2.git
229 lines
6.0 KiB
C
229 lines
6.0 KiB
C
/*****************************************************************************
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* Copyright (c) 2014
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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 "../interface/window.h"
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#include "drawing.h"
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typedef void(*draw_rain_func)(int left, int top, int width, int height);
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static void draw_light_rain(int left, int top, int width, int height);
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static void draw_heavy_rain(int left, int top, int width, int height);
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/**
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*
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* rct2: 0x009AC058
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*/
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const draw_rain_func draw_rain_function[] = {
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NULL,
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&draw_light_rain,
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&draw_heavy_rain
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};
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/**
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*
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* rct2: 0x00684383
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*/
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static void call_draw_rain_func(rct_window* w, short left, short right, short top, short bottom, uint32 draw_rain_func)
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{
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rct_viewport* vp = w->viewport;
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if (vp == NULL) {
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return;
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}
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left = max(left, vp->x);
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right = min(right, vp->width);
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top = max(top, vp->y);
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bottom = min(bottom, vp->height);
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if (left >= right || top >= bottom) {
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return;
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}
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int width = right - left;
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int height = bottom - top;
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draw_rain_function[draw_rain_func](left, top, width, height);
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}
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/**
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*
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* rct2: 0x006842AF
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* From 0x00684383 on: split into call_draw_rain_func
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*/
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static void draw_rain_window(rct_window* original_w, short left, short right, short top, short bottom, uint32 draw_rain_func)
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{
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rct_window* newWindow = RCT2_GLOBAL(RCT2_ADDRESS_NEW_WINDOW_PTR, rct_window*);
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rct_window* w = original_w + 1; // Start from second window
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for (; ; w++) {
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if (w >= newWindow) {
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// Loop ended, draw rain for original_w
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call_draw_rain_func(original_w, left, right, top, bottom, draw_rain_func);
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return;
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}
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if (right <= w->x || bottom <= w->y) {
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continue;
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}
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if (RCT_WINDOW_RIGHT(w) <= left || RCT_WINDOW_BOTTOM(w) <= top) {
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continue;
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}
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if (left >= w->x) {
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break;
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}
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draw_rain_window(original_w, left, w->x, top, bottom, draw_rain_func);
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left = w->x;
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draw_rain_window(original_w, left, right, top, bottom, draw_rain_func);
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return;
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}
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sint16 w_right = RCT_WINDOW_RIGHT(w);
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if (right > w_right) {
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draw_rain_window(original_w, left, w_right, top, bottom, draw_rain_func);
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left = w_right;
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draw_rain_window(original_w, left, right, top, bottom, draw_rain_func);
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return;
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}
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if (top < w->y) {
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draw_rain_window(original_w, left, right, top, w->y, draw_rain_func);
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top = w->y;
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draw_rain_window(original_w, left, right, top, bottom, draw_rain_func);
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return;
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}
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sint16 w_bottom = RCT_WINDOW_BOTTOM(w);
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if (bottom > w_bottom) {
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draw_rain_window(original_w, left, right, top, w_bottom, draw_rain_func);
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top = w_bottom;
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draw_rain_window(original_w, left, right, top, bottom, draw_rain_func);
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return;
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}
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}
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/**
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*
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* rct2: 0x00684266
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*/
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static void draw_rain_animation(uint32 draw_rain_func)
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{
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rct_drawpixelinfo *screenDPI = RCT2_ADDRESS(RCT2_ADDRESS_SCREEN_DPI, rct_drawpixelinfo);
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short left = screenDPI->x;
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short right = left + screenDPI->width;
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short top = screenDPI->y;
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short bottom = top + screenDPI->height;
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rct_window* newWindow = (RCT2_GLOBAL(RCT2_ADDRESS_NEW_WINDOW_PTR, rct_window*));
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for (rct_window* w = g_window_list; w < newWindow; w++) {
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draw_rain_window(w, left, right, top, bottom, draw_rain_func);
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}
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}
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/**
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*
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* rct2: 0x00684218
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*/
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void update_rain_animation()
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{
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if (RCT2_GLOBAL(0x009ABDF2, uint8) == 0)
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return;
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// Get rain draw function and draw rain
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uint32 draw_rain_func = RCT2_GLOBAL(RCT2_ADDRESS_CURRENT_RAIN_LEVEL, uint8);
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if (draw_rain_func > 0 && !(RCT2_GLOBAL(0x009DEA6F, uint8) & 1))
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draw_rain_animation(draw_rain_func);
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}
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/**
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*
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* rct2: 0x00684114
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*/
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static void draw_light_rain(int left, int top, int width, int height)
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{
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int x_start = -(int)RCT2_GLOBAL(RCT2_ADDRESS_SCENARIO_TICKS, uint32) + 8;
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int y_start = (RCT2_GLOBAL(RCT2_ADDRESS_SCENARIO_TICKS, uint32) * 3) + 7;
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y_start = -y_start;
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x_start += left;
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y_start += top;
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gfx_draw_rain(left, top, width, height, x_start, y_start);
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x_start = -(int)RCT2_GLOBAL(RCT2_ADDRESS_SCENARIO_TICKS, uint32) + 0x18;
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y_start = (RCT2_GLOBAL(RCT2_ADDRESS_SCENARIO_TICKS, uint32) * 4) + 0x0D;
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y_start = -y_start;
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x_start += left;
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y_start += top;
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gfx_draw_rain(left, top, width, height, x_start, y_start);
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}
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/**
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*
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* rct2: 0x0068416D
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*/
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static void draw_heavy_rain(int left, int top, int width, int height)
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{
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int x_start = -(int)RCT2_GLOBAL(RCT2_ADDRESS_SCENARIO_TICKS, uint32);
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int y_start = RCT2_GLOBAL(RCT2_ADDRESS_SCENARIO_TICKS, uint32) * 5;
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y_start = -y_start;
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x_start += left;
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y_start += top;
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gfx_draw_rain(left, top, width, height, x_start, y_start);
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x_start = -(int)RCT2_GLOBAL(RCT2_ADDRESS_SCENARIO_TICKS, uint32) + 0x10;
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y_start = (RCT2_GLOBAL(RCT2_ADDRESS_SCENARIO_TICKS, uint32) * 6) + 5;
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y_start = -y_start;
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x_start += left;
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y_start += top;
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gfx_draw_rain(left, top, width, height, x_start, y_start);
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x_start = -(int)RCT2_GLOBAL(RCT2_ADDRESS_SCENARIO_TICKS, uint32) + 8;
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y_start = (RCT2_GLOBAL(RCT2_ADDRESS_SCENARIO_TICKS, uint32) * 3) + 7;
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y_start = -y_start;
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x_start += left;
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y_start += top;
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gfx_draw_rain(left, top, width, height, x_start, y_start);
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x_start = -(int)RCT2_GLOBAL(RCT2_ADDRESS_SCENARIO_TICKS, uint32) + 0x18;
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y_start = (RCT2_GLOBAL(RCT2_ADDRESS_SCENARIO_TICKS, uint32) * 4) + 0x0D;
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y_start = -y_start;
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x_start += left;
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y_start += top;
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gfx_draw_rain(left, top, width, height, x_start, y_start);
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} |