Implement blast mask cooldown. (#39)

code/include/rnd/blastmask.h

@@ -0,0 +1,15 @@
+#ifndef _RND_CHEST_H_
+#define _RND_CHEST_H_
+
+#include "common/advanced_context.h"
+#include "rnd/settings.h"
+#if defined ENABLE_DEBUG || defined DEBUG_PRINT
+#include "common/debug.h"
+extern "C" {
+#include <3ds/svc.h>
+}
+#endif
+namespace rnd {
+  extern "C" u8 checkBlastMaskCooldown();
+}  // namespace rnd
+#endif

code/include/rnd/settings.h

@@ -414,6 +414,9 @@ namespace rnd {
     u32 customMaskButton = 0;
     u32 customNotebookButton = 0;
     u32 customIngameSpoilerButton = 0;
+
+    // Extra MM Settings
+    u8 blastMaskCooldown;
   } SettingsContext;
 
   extern "C" SettingsContext gSettingsContext;

code/mm.ld

@@ -199,6 +199,10 @@ SECTIONS{
     *(.patch_CheckMagicForZoraFastSwim)
   }
 
+  .patch_BlastMaskCooldown 0x2047FC : {
+    *(.patch_BlastMaskCooldown)
+  }
+
   .patch_ZoraBarrierCheckMagicAcquired 0x207230 : {
     *(.patch_ZoraBarrierCheckMagicAcquired)
   }

code/source/asm/hooks.s

@@ -168,6 +168,39 @@ hook_SaveFile_Init:
     mov r3,#0x0
     b 0x5b8b28  
 
+.global hook_BlastMaskCooldown
+hook_BlastMaskCooldown:
+    push {r0-r12, lr}
+    bl checkBlastMaskCooldown
+    cmp r0,#0x0
+    beq defaultBlastCd
+    cmp r0,#0x1
+    beq shortBlastCd
+    cmp r0,#0x2
+    beq veryShortBlastCd
+    cmp r0,#0x3
+    beq instBlastCd
+defaultBlastCd:
+    pop {r0-r12, lr}
+    cmp r0,#0x0
+    subne r0,r0,#0x1
+    bx lr
+shortBlastCd:
+    pop {r0-r12, lr}
+    cmp r0,#0x0
+    subne r0,r0,#0x2
+    bx lr
+veryShortBlastCd:
+    pop {r0-r12, lr}
+    cmp r0,#0x0
+    subne r0,r0,#0x5
+    bx lr
+instBlastCd:
+    pop {r0-r12, lr}
+    cmp r0,#0x0
+    subne r0,r0,r0
+    bx lr
+
 .global hook_OverrideItemIdIndex
 hook_OverrideItemIdIndex:
     push {r0}

code/source/asm/patches.s

@@ -225,6 +225,11 @@ patch_ISGCrouchStabTwo:
     nop
     nop
 
+.section .patch_BlastMaskCooldown
+.global patch_BlastMaskCooldown
+patch_BlastMaskCooldown:
+    bl hook_BlastMaskCooldown
+
 .section .patch_RemoveRazordSwordHealth
 .global patch_RemoveRazordSwordHealth
 patch_RemoveRazordSwordHealth:

code/source/rnd/blastmask.cpp

@@ -0,0 +1,9 @@
+#include "rnd/blastmask.h"
+
+namespace rnd {
+  extern "C" {
+  u8 checkBlastMaskCooldown() {
+    return gSettingsContext.blastMaskCooldown;
+  }
+  }
+}  // namespace rnd