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Started decompile of actual draw function

This commit is contained in:
Duncan Frost 2014-08-03 16:53:57 +01:00
parent 41c610ad4b
commit a9f3a30744
1 changed files with 70 additions and 3 deletions
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73
src/viewport.c
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@ -267,6 +267,73 @@ void sub_0x68615B(int ebp){
RCT2_GLOBAL(0xF1AD24, uint32) = 0;
}
void sub_688485(){
rct_drawpixelinfo* dpi = RCT2_GLOBAL(0x140E9A8, rct_drawpixelinfo*);
uint8* ebp = RCT2_GLOBAL(0xEE7884, uint8*);
while (1){
ebp = *((uint8**)(ebp + 0x24));
if (ebp = 0) return;
//push ebp
int ecx = *((uint16*)(ebp + 0x14));
int edx = *((uint16*)(ebp + 0x16));
if (*(ebp + 0x28) == 2){
if (dpi->zoom_level >= 1){
ecx &= 0xFFFE;
edx &= 0xFFFE;
if (dpi->zoom_level >= 2){
ecx &= 0xFFFC;
edx &= 0xFFFC;
}
}
}
int ebx = *((uint32*)ebp);
if (RCT2_GLOBAL(RCT2_ADDRESS_CURRENT_VIEWPORT_FLAGS, uint16) & 0x2){
if (*(ebp + 0x28) == 3){
if (!(ebx & 0x40000000)){
ebx &= 0x7FFFF;
ebx |= 0x41880000;
}
}
}
if (RCT2_GLOBAL(RCT2_ADDRESS_CURRENT_VIEWPORT_FLAGS, uint16) & 0x1){
if (*(ebp + 0x28) == 9){
if (!(ebx & 0x40000000)){
ebx &= 0x7FFFF;
ebx |= 0x41880000;
}
}
}
if (RCT2_GLOBAL(RCT2_ADDRESS_CURRENT_VIEWPORT_FLAGS, uint16) & 0x4){
if (*(ebp + 0x28) == 10 || *(ebp + 0x28) == 12 || *(ebp + 0x28) == 9 || *(ebp + 0x28) == 5){
if (!(ebx & 0x40000000)){
ebx &= 0x7FFFF;
ebx |= 0x41880000;
}
}
}
if (!(*(ebp + 0x1A) & 1)){
//push ebp??
uint8* _ebp = *((uint8**)(ebp + 4));
gfx_draw_sprite(dpi, ebx, ecx, edx);
//pop ebp??
if (*((uint32*)(ebp + 0x20)) != 0){
//jmp 0x68858E
}
int esi = *((uint32*)(ebp + 0x1C));
if (esi != 0){
//jmp 0x688596
}
//pop ebp
continue;
}
//0x688570
}
}
int sub_0x686806(rct_sprite* sprite, int eax, int ecx, int edx){
int ebp = (eax >> 8) & 0xFF;
edx <<= 16;
@ -274,9 +341,9 @@ int sub_0x686806(rct_sprite* sprite, int eax, int ecx, int edx){
RCT2_GLOBAL(0xF1AD28, uint32) = 0;
RCT2_GLOBAL(0xF1AD2C, uint32) = 0;
edx = (edx >> 16) | (ebp << 16);
int ebp = RCT2_GLOBAL(0xEE7888, uint32);
if (ebp >= RCT2_GLOBAL(0xEE7880, uint32)) return 1;
//686840
ebp = RCT2_GLOBAL(0xEE7888, uint32);
if ((uint32)ebp >= RCT2_GLOBAL(0xEE7880, uint32)) return 1;
//686840 not finished
return 0;
}