diff options
| author | Martmists <mail@martmists.com> | 2020-04-26 17:49:13 +0200 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2020-04-26 17:49:13 +0200 |
| commit | daf2b831efe688dd9ee55f549d00a33c16e840ba (patch) | |
| tree | bdb1765edc0c10ec83f02ded9e9c478d01e241a4 /arm9/src/script.c | |
| parent | f11bca0db09b9e7f7514f5033fe6c31b6efd05e2 (diff) | |
| parent | eb0b544c0678a0e601686fc32b6019b4e893d5f9 (diff) | |
Merge pull request #27 from PikalaxALT/pikalax_work
Separate build structures for ARM9 and ARM7
Diffstat (limited to 'arm9/src/script.c')
| -rw-r--r-- | arm9/src/script.c | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/arm9/src/script.c b/arm9/src/script.c new file mode 100644 index 00000000..7a7ae894 --- /dev/null +++ b/arm9/src/script.c @@ -0,0 +1,163 @@ +#include "global.h"
+#include "script.h"
+
+u16 ScriptReadHalfword(struct ScriptContext *ctx);
+
+void InitScriptContext(struct ScriptContext *ctx, void *cmdTable, void *cmdTableEnd)
+{
+ u32 i;
+
+ ctx->mode = 0;
+ ctx->scriptPtr = 0;
+ ctx->stackDepth = 0;
+ ctx->nativePtr = 0;
+ ctx->cmdTable = cmdTable;
+ ctx->cmdTableEnd = cmdTableEnd;
+
+ for (i = 0; i < 4; i++)
+ ctx->data[i] = 0;
+
+ for (i = 0; i < 20; i++)
+ ctx->stack[i] = 0;
+
+ ctx->unk74 = 0;
+}
+
+u8 SetupBytecodeScript(struct ScriptContext *ctx, const u8 *ptr)
+{
+ ctx->scriptPtr = ptr;
+ ctx->mode = 1;
+ return 1;
+}
+
+void SetupNativeScript(struct ScriptContext *ctx, u8 (*ptr)(struct ScriptContext *))
+{
+ ctx->mode = 2;
+ ctx->nativePtr = ptr;
+}
+
+void StopScript(struct ScriptContext *ctx)
+{
+ ctx->mode = 0;
+ ctx->scriptPtr = 0;
+}
+
+void FUN_02038B6C(struct ScriptContext *ctx, int r1)
+{
+ ctx->unk74 = r1;
+}
+
+extern void ErrorHandling(void);
+
+u8 RunScriptCommand(struct ScriptContext *ctx)
+{
+ if (ctx->mode == 0)
+ return FALSE;
+
+ switch (ctx->mode)
+ {
+ case 0:
+ return FALSE;
+ case 2:
+ if (ctx->nativePtr)
+ {
+ if (ctx->nativePtr(ctx) == TRUE)
+ ctx->mode = 1;
+ return TRUE;
+ }
+ ctx->mode = 1;
+ case 1:
+ while (1)
+ {
+ u16 cmdCode;
+ ScrCmdFunc *func;
+
+ if (!ctx->scriptPtr)
+ {
+ ctx->mode = 0;
+ return FALSE;
+ }
+
+ cmdCode = ScriptReadHalfword(ctx);
+ u32 cmdTableEnd = (u32)ctx->cmdTableEnd;
+ if (cmdCode >= cmdTableEnd)
+ {
+ ErrorHandling();
+ ctx->mode = 0;
+ return FALSE;
+ }
+
+ func = &ctx->cmdTable[cmdCode];
+
+ if ((*func)(ctx) == 1)
+ break;
+ }
+ }
+
+ return TRUE;
+}
+
+u8 ScriptPush(struct ScriptContext *ctx, const u8 *ptr)
+{
+ if (ctx->stackDepth + 1 >= 20)
+ {
+ return 1;
+ }
+ else
+ {
+ ctx->stack[ctx->stackDepth] = ptr;
+ ctx->stackDepth++;
+ return 0;
+ }
+}
+
+const u8 *ScriptPop(struct ScriptContext *ctx)
+{
+ if (ctx->stackDepth == 0)
+ return NULL;
+
+ ctx->stackDepth--;
+ return ctx->stack[ctx->stackDepth];
+}
+
+void ScriptJump(struct ScriptContext *ctx, const u8 *ptr)
+{
+ ctx->scriptPtr = ptr;
+}
+
+u8 ScriptCall(struct ScriptContext *ctx, const u8 *ptr)
+{
+ u8 ret = ScriptPush(ctx, ctx->scriptPtr);
+ ctx->scriptPtr = ptr;
+ return ret;
+}
+
+void ScriptReturn(struct ScriptContext *ctx)
+{
+ ctx->scriptPtr = ScriptPop(ctx);
+}
+
+u16 ScriptReadHalfword(struct ScriptContext *ctx)
+{
+ u16 value = *(ctx->scriptPtr++);
+ value += *(ctx->scriptPtr++) << 8;
+ return value;
+}
+
+u32 ScriptReadWord(struct ScriptContext *ctx)
+{
+ u32 value0 = *(ctx->scriptPtr++);
+ u32 value1 = *(ctx->scriptPtr++);
+ u32 value2 = *(ctx->scriptPtr++);
+ u32 value3 = *(ctx->scriptPtr++);
+ u32 retVal = 0;
+
+ retVal += value3;
+ retVal <<= 8;
+ retVal += value2;
+ retVal <<= 8;
+ retVal += value1;
+ retVal <<= 8;
+ retVal += value0;
+ return retVal;
+}
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