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Decompile of rain-drawing functions 

Light rain function at position 0x00684114
Heavy rain function at position 0x0068416D
Function array at position 0x009AC058
Avoid passing uint32 function address. Instead use the array index.
This commit is contained in:
Marco Costa 2014-08-05 22:42:32 -04:00
parent da88fc1510
commit cc1e2248de
1 changed files with 81 additions and 3 deletions
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84
src/game.c
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@ -51,6 +51,84 @@ void game_handle_keyboard_input();
void process_mouse_over(int x, int y);
typedef void(*draw_rain_func)(int left, int top, int width, int height);
/**
*
* rct2: 0x00684114
*/
void draw_light_rain(int left, int top, int width, int height){
int edi = -RCT2_GLOBAL(0x00F663AC, int) + 8;
int esi = (RCT2_GLOBAL(0x00F663AC, int) * 3) + 7;
esi = -esi;
edi += left;
esi += top;
RCT2_CALLPROC_X(0x00684027, left, top, width, height, esi, edi, 0);
edi = -RCT2_GLOBAL(0x00F663AC, int) + 0x18;
esi = (RCT2_GLOBAL(0x00F663AC, int) * 4) + 0x0D;
esi = -esi;
edi += left;
esi += top;
RCT2_CALLPROC_X(0x00684027, left, top, width, height, esi, edi, 0);
}
/**
*
* rct2: 0x0068416D
*/
void draw_heavy_rain(int left, int top, int width, int height){
int edi = -RCT2_GLOBAL(0x00F663AC, int);
int esi = RCT2_GLOBAL(0x00F663AC, int) * 5;
esi = -esi;
edi += left;
esi += top;
RCT2_CALLPROC_X(0x00684027, left, top, width, height, esi, edi, 0);
edi = -RCT2_GLOBAL(0x00F663AC, int) + 0x10;
esi = (RCT2_GLOBAL(0x00F663AC, int) * 6) + 5;
esi = -esi;
edi += left;
esi += top;
RCT2_CALLPROC_X(0x00684027, left, top, width, height, esi, edi, 0);
edi = -RCT2_GLOBAL(0x00F663AC, int) + 8;
esi = (RCT2_GLOBAL(0x00F663AC, int) * 3) + 7;
esi = -esi;
edi += left;
esi += top;
RCT2_CALLPROC_X(0x00684027, left, top, width, height, esi, edi, 0);
edi = -RCT2_GLOBAL(0x00F663AC, int) + 0x18;
esi = (RCT2_GLOBAL(0x00F663AC, int) * 4) + 0x0D;
esi = -esi;
edi += left;
esi += top;
RCT2_CALLPROC_X(0x00684027, left, top, width, height, esi, edi, 0);
}
/**
*
* rct2: 0x009AC058
*/
const draw_rain_func draw_rain_function[] = {
NULL,
&draw_light_rain, // Light rain
&draw_heavy_rain // Heavy rain
};
/**
*
* rct2: 0x006ED801
@ -248,7 +326,7 @@ void call_draw_rain_func(rct_window* w, short left, short right, short top, shor
int width = right - left;
int height = bottom - top;
RCT2_CALLPROC_X(draw_rain_func, left, top, width, height, 0, 0, 0);
draw_rain_function[draw_rain_func](left, top, width, height);
}
/**
@ -353,8 +431,8 @@ void update_rain_animation()
}
// Get rain draw function and draw rain
uint32 draw_rain_func = RCT2_ADDRESS(0x009AC058, uint32)[RCT2_GLOBAL(RCT2_ADDRESS_CURRENT_RAIN_LEVEL, uint8)];
if (draw_rain_func != 0xFFFFFFFF && !(RCT2_GLOBAL(0x009DEA6F, uint8) & 1))
uint32 draw_rain_func = RCT2_GLOBAL(RCT2_ADDRESS_CURRENT_RAIN_LEVEL, uint8);
if (draw_rain_func > 0 && !(RCT2_GLOBAL(0x009DEA6F, uint8) & 1))
draw_rain_animation(draw_rain_func);
}