sm64pc/enhancements/mem_error_screen.inc.c

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/* clang-format off */
/*
* mem_error_screen.inc.c
*
* This enhancement should be used for ROM hacks that require the expansion pak.
*
* ----- Setup -----
*
* Make sure that USE_EXT_RAM is defined in include/segments.h
#define USE_EXT_RAM
*
* There are 6 files you will need to edit:
* src/game/main.c
* src/engine/level_script.h
* include/text_strings.h.in
* levels/entry.s
* levels/intro/script.s
* levels/intro/geo.s
*
* First, in main.c, you will need to add this line below the includes:
#include "../enhancements/mem_error_screen.inc.c"
*
* In the function AllocPool(), add these lines above main_pool_init():
// Detect memory size
if(does_pool_end_lie_out_of_bounds(end))
{
end = (void *)SEG_POOL_END_4MB;
}
*
* Then in thread3_main(), replace the create_thread for thread 5 with this if/else statement:
if(!gNotEnoughMemory)
{
create_thread(&gGameLoopThread, 5, thread5_game_loop, NULL, gThread5Stack + 0x2000, 10);
}
else
{
create_thread(&gGameLoopThread, 5, thread5_mem_error_message_loop, NULL, gThread5Stack + 0x2000, 10);
}
*
* In src/engine/level_script.h, add this line below 'extern u8 level_script_entry[];'
extern u8 level_script_entry_error_screen[];
*
* In include/text_strings.h.in, add these 3 lines at the top. You can also add more strings if you want.
#define TEXT_CONSOLE_8MB _("If you're using an N64 console, then you will need to buy an\nExpansion Pak to play this ROM hack.")
#define TEXT_PJ64 _("If you are using PJ64 1.6, go to:\nOptions > Settings > Rom Settings Tab > Memory Size\nthen select 8 MB from the drop-down box.")
#define TEXT_PJ64_2 _("If you are using PJ64 2.X, go to:\nOptions > Settings > Config: > Memory Size, select 8 MB")
*
* In levels/entry.s, simply append the following to the file:
glabel level_script_entry_error_screen
init_level
sleep 2
blackout FALSE
set_reg 0
execute 0x14, _introSegmentRomStart, _introSegmentRomEnd, level_intro_entry_error_screen
jump level_script_entry_error_screen
.align 4
*
* In levels/intro/script.s, add the following to the top of the file:
glabel level_intro_entry_error_screen
init_level
fixed_load _goddardSegmentStart, _goddardSegmentRomStart, _goddardSegmentRomEnd
load_mio0 0x07, _intro_segment_7SegmentRomStart, _intro_segment_7SegmentRomEnd
alloc_level_pool
area 1, intro_geo_error_screen
end_area
free_level_pool
load_area 1
sleep 32767
exit_and_execute 0x14, _introSegmentRomStart, _introSegmentRomEnd, level_intro_entry_error_screen
*
* Finally, add the following to the top of levels/intro/geo.s:
glabel intro_geo_error_screen
geo_node_screen_area 0, 160, 120, 160, 120
geo_open_node
geo_zbuffer 0
geo_open_node
geo_node_ortho 100
geo_open_node
geo_background 0x0001
geo_close_node
geo_close_node
geo_zbuffer 0
geo_open_node
geo_asm 0, geo18_display_error_message
geo_close_node
geo_close_node
geo_end
*/
/* clang-format on */
// Ensure that USE_EXT_RAM is defined.
#ifndef USE_EXT_RAM
#error You have to define USE_EXT_RAM in 'include/segments.h'
#endif
#include <types.h>
#include <text_strings.h>
#include "../src/game/display.h"
#include "../src/game/print.h"
#include "../src/game/ingame_menu.h"
#include "../src/game/segment2.h"
#include "../src/engine/level_script.h"
// Require 8 MB of RAM, even if the pool doesn't go into extended memory.
// Change the '8' to whatever MB limit you want.
// Note: only special emulators allow for RAM sizes above 8 MB.
#define REQUIRED_MIN_MEM_SIZE 1048576 * 8
u8 gNotEnoughMemory = FALSE;
u8 gDelayForErrorMessage = 0;
u8 does_pool_end_lie_out_of_bounds(void *end) {
u32 endPhy = ((u32) end) & 0x1FFFFFFF;
u32 memSize = *((u32 *) 0x80000318);
if (endPhy > memSize) {
gNotEnoughMemory = TRUE;
return TRUE;
} else {
if (memSize < REQUIRED_MIN_MEM_SIZE) {
gNotEnoughMemory = TRUE;
}
return FALSE;
}
}
// If you're using an N64 console, then you will need to buy an\nexpansion pak to play this ROM hack.
u8 text_console_8mb[] = { TEXT_CONSOLE_8MB };
// If you are using PJ64 1.6, go to: Options ► Settings ► Rom Settings Tab ► Memory Size then select 8
// MB from the drop-down box.
u8 text_pj64[] = { TEXT_PJ64 };
// If you are using PJ64 2.X, go to: Options ► Settings ► Config: ► Memory Size, select 8 MB
u8 text_pj64_2[] = { TEXT_PJ64_2 };
Gfx *geo18_display_error_message(u32 run, UNUSED struct GraphNode *sp44, UNUSED u32 sp48) {
if (run) {
if (gDelayForErrorMessage > 0) {
// Draw color text title.
print_text(10, 210, "ERROR Need more memory");
// Init generic text rendering
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create_dl_ortho_matrix();
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gSPDisplayList(gDisplayListHead++,
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dl_ia_text_begin); // Init rendering stuff for generic text
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// Set text color to white
gDPSetEnvColor(gDisplayListHead++, 255, 255, 255, 255);
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print_generic_string(8, 170, text_console_8mb);
print_generic_string(8, 120, text_pj64);
print_generic_string(8, 54, text_pj64_2);
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// Cleanup
gSPDisplayList(gDisplayListHead++,
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dl_ia_text_end); // Reset back to default render settings.
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gSPPopMatrix(gDisplayListHead++, G_MTX_MODELVIEW);
} else {
gDelayForErrorMessage += 1;
}
}
return 0;
}
// Basic main loop for the error screen. Note that controllers are not enabled here.
void thread5_mem_error_message_loop(UNUSED void *arg) {
struct LevelCommand *addr;
setup_game_memory();
set_vblank_handler(2, &gGameVblankHandler, &gGameVblankQueue, (OSMesg) 1);
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addr = segmented_to_virtual(level_script_entry_error_screen);
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func_80247ED8();
while (1) {
func_80247FAC();
addr = level_script_execute(addr);
display_and_vsync();
}
}