Movement/Physics (Gravity)

[Boop]

I made a gravity function:

Code:

.data
Grav    REAL8 0.5

Grav_r dd 0040E794h

.Code
Gravity proc
    
                cmp     eax, 6
                jnz     short loc_40E706
                fld     qword ptr ds:[448360h]
                fmul    qword ptr ds:[Grav]
                fld     qword ptr [esi+48h]
                
                jmp     loc_40E791
; ---------------------------------------------------------------------------

loc_40E706:                             ; CODE XREF: sub_40E490+266j
                cmp     eax, 4
                jnz     short loc_40E716
                fld     qword ptr ds:[447A18h]
                fmul    qword ptr ds:[Grav]
                fadd    qword ptr [esi+48h]
                
                jmp     loc_40E791
; ---------------------------------------------------------------------------

loc_40E716:                             ; CODE XREF: sub_40E490+279j
                mov     edx, [esi+70h]
                imul    edx, 178h
                mov     eax, [edx+ecx+7ACh]
                cmp     eax, 3EAh
                jnz     short loc_40E788
                cmp     dword ptr [ecx+6F4h], 7Ch
                jnz     short loc_40E741
                fld     qword ptr ds:[448358h]
                fmul    qword ptr ds:[Grav]
                fadd    qword ptr [esi+48h]
                
                jmp     short loc_40E791
; ---------------------------------------------------------------------------

loc_40E741:                             ; CODE XREF: sub_40E490+2A4j
                cmp     eax, 3EAh
                jnz     short loc_40E788
                cmp     [ecx+6F4h], edi
                jnz     short loc_40E75B
                fld     qword ptr ds:[448350h]
                fmul    qword ptr ds:[Grav]
                fadd    qword ptr [esi+48h]
                jmp     short loc_40E791
; ---------------------------------------------------------------------------

loc_40E75B:                             ; CODE XREF: sub_40E490+2BEj
                cmp     eax, 3EAh
                jnz     short loc_40E788
                cmp     dword ptr [ecx+6F4h], 65h
                jnz     short loc_40E776
                fld     qword ptr ds:[448360h]
                fmul    qword ptr ds:[Grav]
                fadd    qword ptr [esi+48h]
                
                jmp     short loc_40E791
; ---------------------------------------------------------------------------

loc_40E776:                             ; CODE XREF: sub_40E490+2D9j
                cmp     eax, 3EAh
                jnz     short loc_40E788
                fld     qword ptr ds:[448348h]
                fmul    qword ptr ds:[Grav]
                fadd    qword ptr [esi+48h]
                
                jmp     short loc_40E791
; ---------------------------------------------------------------------------

loc_40E788:                             ; CODE XREF: sub_40E490+29Bj
                                        ; sub_40E490+2B6j ...
                fld     qword ptr ds:[448340h]
                fmul    qword ptr ds:[Grav]
                fadd    qword ptr [esi+48h]
                

loc_40E791:                             ; CODE XREF: sub_40E490+271j
                                        ; sub_40E490+284j ...
                fstp    qword ptr [esi+48h]
                
                jmp [Grav_r]


Gravity endp

invoke JmpPatch,0040E6F3h, addr Gravity

Grav is the factor by which all the Gravity stuff is multiplied. The function is still buggy (I think I'm multiplying variables I shouldn't be touching ), so some times items don't fall or something. Not sure really . Anyway have fun .


[youtube]K-cMcO7D4rc[/youtube]
A bad video showing how gravity is affected when you half it(I know it's not a very good demonstration, but yeah ).