Super mario 64 last impact cover1/12/2023 ![]() So what is it’s argument? Why, it’s the register T3, which is a place a temporary value can be stored by the computer for math and logic operations. T3 can be seen on the list of registers on the right of the debugger: its value in the image is 00000000 801A6BC0, a hexidecimal number. Finally, the last hexidecimal immediate argument for a BEQZ command represents the location in code to jump to should the comdition be met. So, if T3 = 00000000 801A6BC0, BEQZ T3 will fail to jump to its immediate location, and execute the next instruction as normal. ![]() A more complete list of ASM commands can be found here.Īnother related command is the BNEZ command. This command does the opposite of BEQZ: BNEZ stands for “Branch on Not Equal to Zero”. One interesting place to apply this is the code line 80256498 As you might expect, we can use this to negate a BEQZ command. ![]() Which branches on perpendicular wall collision it’s the part of the code that gives the player the opportunity to walljump on perpendicular walls. So, if we swap it out for a BEQZ we should be able to walljump on parallel walls! Tests if the player is holding down the L button.f_testInput BUTTON_L, BUTTON_PRESSED, proc802CB1C0_end orga 0x861C0 Set ROM address, we are overwritting a useless loop function as our hook.area 0xA4 Set data import limit to 0xA4 bytes addiu sp, sp, -0x18 sw ra, 0x14 (sp) When the player holds the L button, Mario will float up into the air We’ll be looking at an example that overrides a debug function (it does nothing, but the code calls it anyway) to allow the player to jump override any state to jumping by pressing L: Now, let’s see what injecting a custom function looks like. Li t0, MARIO_STRUCT li t1, ACTION_JUMP sw t1, 0x0C(t0) Set mario’s action to jumping. Proc802CB1C0_end: lw ra, 0x14 (sp) jr ra addiu sp, sp, 0x18. Let’s start with the bread and butter of functions:įunctions in ASM all pretty much start the same way, with a addiu sp, sp command and a sw ra, (sp). Since this is ASM and everything has to be difficult, we must allocate our own memory on the stack for any variables we want to preserve between function calls by incrementing the stack pointer, especially the return address which allows the program to return to whichever function called the function we’re currently executing. When we use a command like sw ra, 0x14 (sp) that has a register in parentheses, we are using the immediate as an offset to that register, so this saves the return address 0x14 half-bytes (20 in base ten) after the stack pointer’s memory address. This way we’ll be able to retrieve it later. ![]() The “.area” compiler directive is not strictly necessary, but it does help prevent us from unknowingly overriding key code and causing crashes, so it’s good practice when using MIPS but won’t translate to actual code. #Super mario 64 last impact save states code The end of the function looks somewhat similar: In this case the example tells us that it’s safe to override the first 0xA4 half-bytes (or the first 164, in our familiar base 10) so we’ll prevent anything further from being overwritten. #Super mario 64 last impact save states series.#Super mario 64 last impact save states code.Wikipedia may be copied with the proper acknowledgment, but some need tweaking to work properly on Wikia, so use a Wikia one if possible.Templates are generally shown with the format required to use the template (e.g. This saves editors the hassle of duplicating the same text again and again, and also helps ensure consistency. Wiki templates provide a means to insert the same content over and over in different (or the same) pages. The Template namespace (found from Special:Allpages) always has all templates in the wiki, sorted alphanumerically.Category:Templates should cover all templates in the wiki, categorized into the various subcategories.If you feel that a template belongs on this page, do not hesitate to add it. There are many templates in use in Super Mario 64 Hacks Wiki these are only a subset, representing some of the most important and commonly used ones.
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