diff options
Diffstat (limited to 'src/scanline_effect.c')
| -rw-r--r-- | src/scanline_effect.c | 235 |
1 files changed, 235 insertions, 0 deletions
diff --git a/src/scanline_effect.c b/src/scanline_effect.c new file mode 100644 index 000000000..670f2d9b3 --- /dev/null +++ b/src/scanline_effect.c @@ -0,0 +1,235 @@ +#include "global.h" +#include "data2.h" +#include "task.h" +#include "trig.h" +#include "scanline_effect.h" + +static void sub_80896F4(void); +static void sub_8089714(void); + +extern u16 gUnknown_030041B0; +extern u16 gBattle_BG1_Y; +extern u16 gUnknown_030041B8; +extern u16 gBattle_BG2_Y; +extern u16 gBattle_BG2_X; +extern u16 gBattle_BG0_Y; +extern u16 gBattle_BG0_X; +extern u16 gBattle_BG1_X; + +extern u8 gUnknown_0202FFA4; + +extern struct UnknownTaskStruct2 gUnknown_03004DC0; + +// Is this a struct? +extern u16 gUnknown_03004DE0[][0x3C0]; + +void remove_some_task(void) +{ + gUnknown_03004DC0.unk15 = 0; + DmaStop(0); + if (gUnknown_03004DC0.taskId != 0xFF) + { + DestroyTask(gUnknown_03004DC0.taskId); + gUnknown_03004DC0.taskId = 0xFF; + } +} + +void dp12_8087EA4(void) +{ + CpuFill16(0, gUnknown_03004DE0, 0x780 * 2); + gUnknown_03004DC0.src[0] = 0; + gUnknown_03004DC0.src[1] = 0; + gUnknown_03004DC0.dest = 0; + gUnknown_03004DC0.unkC = 0; + gUnknown_03004DC0.srcBank = 0; + gUnknown_03004DC0.unk15 = 0; + gUnknown_03004DC0.unk16 = 0; + gUnknown_03004DC0.unk17 = 0; + gUnknown_03004DC0.taskId = 0xFF; +} + +void sub_80895F8(struct UnknownTaskStruct unk) +{ + if (unk.control == (((DMA_ENABLE | DMA_START_HBLANK | DMA_REPEAT | DMA_DEST_RELOAD) << 16) | 1)) + { + gUnknown_03004DC0.src[0] = &gUnknown_03004DE0[0][1]; + gUnknown_03004DC0.src[1] = &gUnknown_03004DE0[1][1]; + gUnknown_03004DC0.unk10 = sub_80896F4; + } + else + { + gUnknown_03004DC0.src[0] = &gUnknown_03004DE0[0][2]; + gUnknown_03004DC0.src[1] = &gUnknown_03004DE0[1][2]; + gUnknown_03004DC0.unk10 = sub_8089714; + } + + gUnknown_03004DC0.unkC = unk.control; + gUnknown_03004DC0.dest = unk.dest; + gUnknown_03004DC0.unk15 = unk.unk8; + gUnknown_03004DC0.unk16 = unk.unk9; + gUnknown_03004DC0.unk17 = unk.unk9; +} + +void sub_8089668(void) +{ + if (gUnknown_03004DC0.unk15) + { + if (gUnknown_03004DC0.unk15 == 3) + { + gUnknown_03004DC0.unk15 = 0; + DmaStop(0); + gUnknown_0202FFA4 = 1; + } + else + { + DmaStop(0); + DmaSet(0, gUnknown_03004DC0.src[gUnknown_03004DC0.srcBank], gUnknown_03004DC0.dest, gUnknown_03004DC0.unkC); + gUnknown_03004DC0.unk10(); + gUnknown_03004DC0.srcBank ^= 1; + } + } +} + +static void sub_80896F4(void) +{ + u16 *dest = (u16 *)gUnknown_03004DC0.dest; + u16 *src = (u16 *)&gUnknown_03004DE0[gUnknown_03004DC0.srcBank]; + *dest = *src; +} + +static void sub_8089714(void) +{ + u32 *dest = (u32 *)gUnknown_03004DC0.dest; + u32 *src = (u32 *)&gUnknown_03004DE0[gUnknown_03004DC0.srcBank]; + *dest = *src; +} + +static void task00_for_dp12(u8 taskId) +{ + int value = 0; + + if (gUnknown_0202FFA4) + { + DestroyTask(taskId); + gUnknown_03004DC0.taskId = 0xFF; + } + else + { + if (gTasks[taskId].data[7]) + { + switch (gTasks[taskId].data[6]) + { + case 0x0: + value = gBattle_BG0_X; + break; + case 0x2: + value = gBattle_BG0_Y; + break; + case 0x4: + value = gBattle_BG1_X; + break; + case 0x6: + value = gBattle_BG1_Y; + break; + case 0x8: + value = gBattle_BG2_X; + break; + case 0xA: + value = gBattle_BG2_Y; + break; + case 0xC: + value = gUnknown_030041B0; + break; + case 0xE: + value = gUnknown_030041B8; + break; + } + } + if (gTasks[taskId].data[4]) + { + int i; + int offset; + gTasks[taskId].data[4]--; + offset = gTasks[taskId].data[3] + 320; + for (i = gTasks[taskId].data[0]; i < gTasks[taskId].data[1]; i++) + { + gUnknown_03004DE0[gUnknown_03004DC0.srcBank][i] = gUnknown_03004DE0[0][offset] + value; + offset++; + } + } + else + { + int i; + int offset; + gTasks[taskId].data[4] = gTasks[taskId].data[5]; + offset = gTasks[taskId].data[3] + 320; + for (i = gTasks[taskId].data[0]; i < gTasks[taskId].data[1]; i++) + { + gUnknown_03004DE0[gUnknown_03004DC0.srcBank][i] = gUnknown_03004DE0[0][offset] + value; + offset++; + } + gTasks[taskId].data[3]++; + if (gTasks[taskId].data[3] == gTasks[taskId].data[2]) + { + gTasks[taskId].data[3] = 0; + } + } + } +} + +static void sub_80898FC(u16 *a1, u8 a2, u8 a3, u8 a4) +{ + u16 i = 0; + u8 offset = 0; + + while (i < 0x100) + { + a1[i] = (gSineTable[offset] * a3) / 256; + offset += a2; + i++; + } +} + +u8 sub_8089944(u8 a1, u8 a2, u8 a3, u8 a4, u8 a5, u8 a6, u8 a7) +{ + int i; + int offset; + struct UnknownTaskStruct unk; + u8 taskId; + + dp12_8087EA4(); + + unk.dest = (void *)(REG_ADDR_BG0HOFS + a6); + unk.control = ((DMA_ENABLE | DMA_START_HBLANK | DMA_REPEAT | DMA_DEST_RELOAD) << 16) | 1; + unk.unk8 = 1; + unk.unk9 = 0; + + sub_80895F8(unk); + + taskId = CreateTask(task00_for_dp12, 0); + + gTasks[taskId].data[0] = a1; + gTasks[taskId].data[1] = a2; + gTasks[taskId].data[2] = 256 / a3; + gTasks[taskId].data[3] = 0; + gTasks[taskId].data[4] = a5; + gTasks[taskId].data[5] = a5; + gTasks[taskId].data[6] = a6; + gTasks[taskId].data[7] = a7; + + gUnknown_03004DC0.taskId = taskId; + gUnknown_0202FFA4 = 0; + + sub_80898FC(&gUnknown_03004DE0[0][320], a3, a4, a2 - a1); + + offset = 320; + + for (i = a1; i < a2; i++) + { + gUnknown_03004DE0[0][i] = gUnknown_03004DE0[0][offset]; + gUnknown_03004DE0[1][i] = gUnknown_03004DE0[0][offset]; + offset++; + } + + return taskId; +} |