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test.c
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test.c
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// Controller bits
#define BUTTON_A 0x80
#define BUTTON_B 0x40
#define BUTTON_SELECT 0x20
#define BUTTON_START 0x10
#define BUTTON_UP 0x08
#define BUTTON_DOWN 0x04
#define BUTTON_LEFT 0x02
#define BUTTON_RIGHT 0x01
// Registers
#define PPU_ADDRESS *((unsigned char*)0x2006)
#define PPU_DATA *((unsigned char*)0x2007)
#pragma bss-name (push, "OAM")
unsigned char sprites[256];
#pragma bss-name (pop)
#pragma bss-name (push, "BSS")
static unsigned char gController1;
static unsigned char gPrevController1;
static unsigned char gPrevController1Change;
static unsigned char gX;
static unsigned char gY;
static unsigned long gXScroll;
static unsigned char gYScroll;
static unsigned char gYNametable;
static unsigned char devnull;
static unsigned int i;
static unsigned int gJumping; // 0 if not currently in the air from a jump, 1 if yes
static unsigned int gBounceCounter;
static unsigned int gVelocity;
static unsigned int gVelocityDirection;
static unsigned int gSpeed;
static unsigned int gSpeedDirection;
extern void pMusicInit(unsigned char);
extern void pMusicPlay(void);
void __fastcall__ UnRLE(const unsigned char *data);
#include "Background/Level1Top.h"
#include "Background/Level1Bottom.h"
#pragma bss-name (pop)
#pragma data-name (push, "RODATA")
// 16 x (15 + 15)
// TODO should use a bit per block instead of byte, but this is a lot easier at the moment
unsigned char collision[480] = {
0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, };
unsigned char frog[4] = {0x00,0x01,0x02,0x03,};
unsigned char bird[2] = {0x04,0x05,};
#pragma data-name (pop)
#pragma data-name ("CHARS")
unsigned char pattern[176] = {0x00,0x00,0x00,0x01,0x01,0x07,0x09,0x17,0x00,0x00,0x00,0x00,0x00,0x00,0x06,0x08, // frog
0x60,0xD0,0xA8,0xA8,0x86,0x3E,0xF3,0x7C,0x00,0x20,0x70,0x70,0x78,0xC0,0x0C,0x80, // frog
0x2F,0x59,0x7E,0xF6,0xEC,0x9C,0x38,0x3F,0x10,0x20,0x00,0x00,0x00,0x01,0x00,0x00, // frog
0x60,0xC0,0xC0,0xC0,0xE6,0x7C,0x1E,0x80,0x80,0x00,0x18,0x10,0x00,0x00,0x00,0x00, // frog
0x18,0x2C,0xF9,0x03,0x03,0x01,0x01,0x00,0x00,0x00,0xE6,0x04,0x00,0x00,0x00,0x00, // bird
0x00,0x00,0xF0,0xFE,0xFF,0xDF,0xC0,0xE0,0x00,0x00,0x00,0x00,0x00,0x00,0x1C,0x0E, // bird
0xFF,0x00,0x78,0x40,0x5F,0x1F,0x3F,0x00,0x00,0xFF,0xFF,0xFF,0xE0,0xE0,0xC0,0xFF,0xFF,0x03,0xFF,0x0F,0xEF,0xE3,0x8F,0x3F,0x00,0xFC,0x00,0xF0,0x10,0x1C,0x70,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x18,0x38,0x78,0x58,0x18,0x18,0x7E,0x00,0x18,0x38,0x78,0x58,0x18,0x18,0x7E,0x00,0x3C,0x66,0x06,0x1E,0x38,0x70,0x7E,0x00,0x3C,0x66,0x06,0x1E,0x38,0x70,0x7E,0x00,};
void vblank(void)
{
while((*((unsigned char*)0x2002) & 0x80) != 0x00);
while((*((unsigned char*)0x2002) & 0x80) != 0x80);
}
void ppuinit(void)
{
// from NESDev:
// +---------+----------------------------------------------------------+
// | $2000 | PPU Control Register #1 (W) |
// | | |
// | | D7: Execute NMI on VBlank |
// | | 0 = Disabled |
// | | 1 = Enabled |
// | | D6: PPU Master/Slave Selection --+ |
// | | 0 = Master +-- UNUSED |
// | | 1 = Slave --+ |
// | | D5: Sprite Size |
// | | 0 = 8x8 |
// | | 1 = 8x16 |
// | | D4: Background Pattern Table Address |
// | | 0 = $0000 (VRAM) |
// | | 1 = $1000 (VRAM) |
// | | D3: Sprite Pattern Table Address |
// | | 0 = $0000 (VRAM) |
// | | 1 = $1000 (VRAM) |
// | | D2: PPU Address Increment |
// | | 0 = Increment by 1 |
// | | 1 = Increment by 32 |
// | | D1-D0: Name Table Address |
// | | 00 = $2000 (VRAM) |
// | | 01 = $2400 (VRAM) |
// | | 10 = $2800 (VRAM) |
// | | 11 = $2C00 (VRAM) |
// +---------+----------------------------------------------------------+
// +---------+----------------------------------------------------------+
// | $2001 | PPU Control Register #2 (W) |
// | | |
// | | D7-D5: Full Background Colour (when D0 == 1) |
// | | 000 = None +------------+ |
// | | 001 = Green | NOTE: Do not use more |
// | | 010 = Blue | than one type |
// | | 100 = Red +------------+ |
// | | D7-D5: Colour Intensity (when D0 == 0) |
// | | 000 = None +--+ |
// | | 001 = Intensify green | NOTE: Do not use more |
// | | 010 = Intensify blue | than one type |
// | | 100 = Intensify red +--+ |
// | | D4: Sprite Visibility |
// | | 0 = sprites not displayed |
// | | 1 = sprites visible |
// | | D3: Background Visibility |
// | | 0 = Background not displayed |
// | | 1 = Background visible |
// | | D2: Sprite Clipping |
// | | 0 = sprites invisible in left 8-pixel column |
// | | 1 = No clipping |
// | | D1: Background Clipping |
// | | 0 = BG invisible in left 8-pixel column |
// | | 1 = No clipping |
// | | D0: Display Type |
// | | 0 = Colour display |
// | | 1 = Monochrome display |
// +---------+----------------------------------------------------------+
// Set PPU registers
*((unsigned char*)0x2000) = 0x84;
*((unsigned char*)0x2001) = 0x1E;
}
void ppudisable(void)
{
// Disable graphics
*((unsigned char*)0x2000) = 0x00;
*((unsigned char*)0x2001) = 0x00;
}
void apuinit(void)
{
// Initialize the APU to a known basic state
*((unsigned char*)0x4015) = 0x0F;
*((unsigned char*)0x4000) = 0x30;
*((unsigned char*)0x4001) = 0x08;
*((unsigned char*)0x4002) = 0x00;
*((unsigned char*)0x4003) = 0x00;
*((unsigned char*)0x4004) = 0x30;
*((unsigned char*)0x4005) = 0x08;
*((unsigned char*)0x4006) = 0x00;
*((unsigned char*)0x4007) = 0x00;
*((unsigned char*)0x4008) = 0x80;
*((unsigned char*)0x4009) = 0x00;
*((unsigned char*)0x400A) = 0x00;
*((unsigned char*)0x400B) = 0x00;
*((unsigned char*)0x400C) = 0x30;
*((unsigned char*)0x400D) = 0x00;
*((unsigned char*)0x400E) = 0x00;
*((unsigned char*)0x400F) = 0x00;
*((unsigned char*)0x4010) = 0x00;
*((unsigned char*)0x4011) = 0x00;
*((unsigned char*)0x4012) = 0x00;
*((unsigned char*)0x4013) = 0x00;
*((unsigned char*)0x4014) = 0x00;
*((unsigned char*)0x4015) = 0x0F;
*((unsigned char*)0x4016) = 0x00;
*((unsigned char*)0x4017) = 0x40;
}
void palattes(void)
{
// Background 0
PPU_ADDRESS = 0x3F;
PPU_ADDRESS = 0x00;
PPU_DATA = 0x0E;
PPU_ADDRESS = 0x3F;
PPU_ADDRESS = 0x01;
PPU_DATA = 0x0A;
PPU_ADDRESS = 0x3F;
PPU_ADDRESS = 0x02;
PPU_DATA = 0x1A;
PPU_ADDRESS = 0x3F;
PPU_ADDRESS = 0x03;
PPU_DATA = 0x08;
// Background 1
PPU_ADDRESS = 0x3F;
PPU_ADDRESS = 0x04;
PPU_DATA = 0x0E;
PPU_ADDRESS = 0x3F;
PPU_ADDRESS = 0x05;
PPU_DATA = 0x00;
PPU_ADDRESS = 0x3F;
PPU_ADDRESS = 0x06;
PPU_DATA = 0x10;
PPU_ADDRESS = 0x3F;
PPU_ADDRESS = 0x07;
PPU_DATA = 0x20;
// Sprite 0
PPU_ADDRESS = 0x3F;
PPU_ADDRESS = 0x11;
PPU_DATA = 0x0A;
PPU_ADDRESS = 0x3F;
PPU_ADDRESS = 0x12;
PPU_DATA = 0x1A;
PPU_ADDRESS = 0x3F;
PPU_ADDRESS = 0x13;
PPU_DATA = 0x08;
// Sprite 1
PPU_ADDRESS = 0x3F;
PPU_ADDRESS = 0x15;
PPU_DATA = 0x11;
PPU_ADDRESS = 0x3F;
PPU_ADDRESS = 0x16;
PPU_DATA = 0x02;
PPU_ADDRESS = 0x3F;
PPU_ADDRESS = 0x17;
PPU_DATA = 0x27;
}
//void ppu_copy( unsigned char* addr, unsigned int len )
//{
// for( i = 0; i < len; i++ )
// {
// PPU_ADDRESS = 0x20;
// PPU_ADDRESS = i;
// PPU_DATA = ((unsigned char*) addr)[i];
// }
//}
void patterntables(void)
{
//for( i = 0; i < 768; i++ )
//{
// PPU_ADDRESS = 0x00;
// PPU_ADDRESS = 0;
// //PPU_DATA = j;//((unsigned char*) addr)[i];
// PPU_DATA = ((unsigned char*) pattern)[i];
// PPU_ADDRESS = 0x10;
// PPU_ADDRESS = 0;
// //PPU_DATA = j;//((unsigned char*) addr)[i];
// PPU_DATA = ((unsigned char*) pattern)[i];
//}
//PPU_ADDRESS = 0x00;
//PPU_ADDRESS = 0;
//for( i = 0; i < 1024; i++ )
//{
// //PPU_DATA = pattern[i];
// PPU_DATA = i;//pattern[i];
//}
}
void setup_sprites(void)
{
unsigned int i;
// clear sprite ram
for( i = 0; i < 256; i++ )
{
sprites[i] = 0x00;
}
// From NESDev:
//+------+----------+--------------------------------------+
//+ Byte | Bits | Description |
//+------+----------+--------------------------------------+
//| 0 | YYYYYYYY | Y Coordinate - 1. Consider the coor- |
//| | | dinate the upper-left corner of the |
//| | | sprite itself. |
//| 1 | IIIIIIII | Tile Index # |
//| 2 | vhp000cc | Attributes |
//| | | v = Vertical Flip (1=Flip) |
//| | | h = Horizontal Flip (1=Flip) |
//| | | p = Background Priority |
//| | | 0 = In front |
//| | | 1 = Behind |
//| | | c = Upper two (2) bits of colour |
//| 3 | XXXXXXXX | X Coordinate (upper-left corner) |
//+------+----------+--------------------------------------+}
sprites[0] = 0x50;
sprites[1] = 0x00;
sprites[2] = 0x00;
sprites[3] = 0x50;
sprites[4] = 0x50;
sprites[5] = 0x01;
sprites[6] = 0x00;
sprites[7] = 0x58;
sprites[8] = 0x58;
sprites[9] = 0x02;
sprites[10] = 0x00;
sprites[11] = 0x50;
sprites[12] = 0x58;
sprites[13] = 0x03;
sprites[14] = 0x00;
sprites[15] = 0x58;
gX = 0x40;
gY = 0x50;
gVelocity = 0;
gVelocityDirection = 0;
gSpeed = 0;
gSpeedDirection = 1;
gXScroll = 0;
gYScroll = 0;
gYNametable = 2;
gJumping = 1;
gBounceCounter = 0;
sprites[16] = 0x30;
sprites[17] = 0x04;
sprites[18] = 0x01;
sprites[19] = 0x50;
sprites[20] = 0x30;
sprites[21] = 0x05;
sprites[22] = 0x01;
sprites[23] = 0x58;
}
void dma_sprites(void)
{
*((unsigned char*)0x4013) = 0x00;
*((unsigned char*)0x4014) = 0x02;
}
void input_poll(void)
{
// Strobe 0x4016 bit 0 to gather input
*((unsigned char*)0x4016) |= 0x01;
*((unsigned char*)0x4016) &= 0xFE;
gPrevController1 = gController1;
gController1 = 0x00;
if(*((unsigned char*)0x4016) & 0x01)
{
gController1 |= BUTTON_A;
}
if(*((unsigned char*)0x4016) & 0x01)
{
gController1 |= BUTTON_B;
}
if(*((unsigned char*)0x4016) & 0x01)
{
gController1 |= BUTTON_SELECT;
}
if(*((unsigned char*)0x4016) & 0x01)
{
gController1 |= BUTTON_START;
}
if(*((unsigned char*)0x4016) & 0x01)
{
gController1 |= BUTTON_UP;
}
if(*((unsigned char*)0x4016) & 0x01)
{
gController1 |= BUTTON_DOWN;
}
if(*((unsigned char*)0x4016) & 0x01)
{
gController1 |= BUTTON_LEFT;
}
if(*((unsigned char*)0x4016) & 0x01)
{
gController1 |= BUTTON_RIGHT;
}
if( ((gController1 & BUTTON_A) == BUTTON_A && (gPrevController1 & BUTTON_A) == 0) ||
((gController1 & BUTTON_A) == 0 && (gPrevController1 & BUTTON_A) == BUTTON_A))
{
gPrevController1Change = gPrevController1;
}
}
void small_jump(void)
{
if(gJumping == 0) {
gJumping = 1;
gVelocity = 6;
gVelocityDirection = 1;
}
}
void big_jump(void)
{
if(gJumping == 0) {
gJumping = 1;
gVelocity = 16;
gVelocityDirection = 1;
gPrevController1Change |= BUTTON_A;
}
}
void update_sprites(void)
{
if(gController1 & BUTTON_UP)
{
}
if(gController1 & BUTTON_DOWN)
{
}
if(gController1 & BUTTON_LEFT)
{
if( gSpeedDirection == 0 )
{
if( gSpeed < 12 )
{
++gSpeed;
}
}
else
{
if( gSpeed == 0 )
{
gSpeed = 1;
gSpeedDirection = 0;
sprites[1] = 0x01;
sprites[2] = 0x40;
sprites[5] = 0x00;
sprites[6] = 0x40;
sprites[9] = 0x03;
sprites[10] = 0x40;
sprites[13] = 0x02;
sprites[14] = 0x40;
}
else
{
--gSpeed;
}
}
}
if(gController1 & BUTTON_RIGHT)
{
if( gSpeedDirection == 1 )
{
if( gSpeed < 12 )
{
++gSpeed;
}
}
else
{
if( gSpeed == 0 )
{
gSpeed = 1;
gSpeedDirection = 1;
sprites[1] = 0x00;
sprites[2] = 0x00;
sprites[5] = 0x01;
sprites[6] = 0x00;
sprites[9] = 0x02;
sprites[10] = 0x00;
sprites[13] = 0x03;
sprites[14] = 0x00;
}
else
{
--gSpeed;
}
}
}
if( ((gController1 & (BUTTON_RIGHT | BUTTON_LEFT)) == 0) && (gSpeed > 0) )
{
--gSpeed;
}
if(gController1 & BUTTON_B)
{
// Currently does nothing
}
// Only if new press (else you could just hold jump to jump over and over)
if(((gController1 & BUTTON_A) > 0) && ((gPrevController1Change & BUTTON_A) == 0))
{
big_jump();
}
if(!((gController1 & BUTTON_A) || (gController1 & BUTTON_B)))
{
// Stop making the sound
//*((unsigned char*)0x4000) = 0x30;
}
sprites[0] = gY;
sprites[3] = gX;
sprites[4] = gY;
sprites[7] = gX+8;
sprites[8] = gY+8;
sprites[11] = gX;
sprites[12] = gY+8;
sprites[15] = gX+8;
}
void do_physics(void)
{
// 0-15 Frog 4 sprites
// 16-23 Bird
if( sprites[16] != gY )
{
if( sprites[16] < gY )
{
sprites[16] += 1;
sprites[20] += 1;
}
else
{
sprites[16] -= 1;
sprites[20] -= 1;
}
}
if( sprites[19] != gX )
{
if( sprites[19] < gX )
{
// X
sprites[19] += 1;
sprites[23] += 1;
// Tiles
sprites[21] = 0x04;
sprites[22] = 0x41;
sprites[17] = 0x05;
sprites[18] = 0x41;
}
else
{
// X
sprites[19] -= 1;
sprites[23] -= 1;
// Tiles
sprites[21] = 0x05;
sprites[22] = 0x01;
sprites[17] = 0x04;
sprites[18] = 0x01;
}
}
//
// Horizontal Movement
//
if( gSpeedDirection == 0 )
{
////TODO better checks to verify direction changed
//if((gPrevController1 & BUTTON_LEFT) == 0) {
// sprites[1] = 0x01;
// sprites[2] = 0x40;
// sprites[5] = 0x00;
// sprites[6] = 0x40;
// sprites[9] = 0x03;
// sprites[10] = 0x40;
// sprites[13] = 0x02;
// sprites[14] = 0x40;
//}
for( i = 0; (i<<2) < gSpeed; i++ )
{
if(gX > 0x08)
{
if( gYNametable == 2 )
{
//x = gX >> 4;
//y = gY >> 4
//index[y*16 + x]
if( collision[240 + (((gY+1)&0xF0)) + ((gX-1) >> 4)] == 0 &&
collision[240 + (((gY+0x10)&0xF0)) + ((gX-1) >> 4)] == 0 )
{
gX -= 1;
small_jump();
}
else
{
gSpeed = 0;
}
}
else
{
if((gYScroll + gY + 1) >= 0xF0)
{
if( collision[240 + (((gYScroll + gY + 1 - 0xF0) & 0xF0) ) + ((gX-1) >> 4)] == 0 &&
collision[240 + (((gYScroll + gY + 0x10 - 0xF0) & 0xF0) ) + ((gX-1) >> 4)] == 0 )
{
gX -= 1;
small_jump();
}
else
{
gSpeed = 0;
}
}
else
{
if( collision[(((gYScroll + gY + 1) & 0xF0) ) + ((gX-1) >> 4)] == 0 &&
collision[(((gYScroll + gY + 0x10) & 0xF0) ) + ((gX-1) >> 4)] == 0 )
{
gX -= 1;
small_jump();
}
else
{
gSpeed = 0;
}
}
}
}
}
}
else
{
////TODO better checks to verify direction changed
//if((gPrevController1 & BUTTON_RIGHT) == 0) {
// sprites[1] = 0x00;
// sprites[2] = 0x00;
// sprites[5] = 0x01;
// sprites[6] = 0x00;
// sprites[9] = 0x02;
// sprites[10] = 0x00;
// sprites[13] = 0x03;
// sprites[14] = 0x00;
//}
for( i = 0; (i<<2) < gSpeed; i++ )
{
if(gX < 0xE8)
{
if( gYNametable == 2 )
{
if( collision[240 + (((gY+1)&0xF0) ) + ((gX+0x10) >> 4)] == 0 &&
collision[240 + (((gY+0x10)&0xF0) ) + ((gX+0x10) >> 4)] == 0 )
{
gX += 1;
small_jump();
}
else
{
gSpeed = 0;
}
}
else
{
if((gYScroll + gY + 1) >= 0xF0)
{
if( collision[240 + (((gYScroll + gY + 1 - 0xF0) & 0xF0) ) + ((gX+0x10) >> 4)] == 0 &&
collision[240 + (((gYScroll + gY + 0x10 - 0xF0) & 0xF0) ) + ((gX+0x10) >> 4)] == 0 )
{
gX += 1;
small_jump();
}
else
{
gSpeed = 0;
}
}
else
{
if( collision[(((gYScroll + gY + 1) & 0xF0) ) + ((gX+0x10) >> 4)] == 0 &&
collision[(((gYScroll + gY + 0x10) & 0xF0) ) + ((gX+0x10) >> 4)] == 0 )
{
gX += 1;
small_jump();
}
else
{
gSpeed = 0;
}
}
}
}
}
}
//
// Vertical Movement
//
if( gVelocityDirection == 1 ) // moving up
{
for( i = 0; (i<<2) < gVelocity; i++ )
{
if( gYNametable == 2 )
{
if( collision[240 + (((gY)&0xF0) ) + ((gX) >> 4)] == 0 &&
collision[240 + (((gY)&0xF0) ) + ((gX+0xF) >> 4)] == 0 )
{
if(gY > 0x0F)
{
gY -= 1;
}
else
{
gYScroll = 0xEF;
gYNametable = 0;
}
}
else
{
gVelocity = 0;
gVelocityDirection = 0;
break;
}
}
else if((gYScroll + gY) >= 0xF0 )
{
if( collision[240 + (((gYScroll + gY - 0xF0)&0xF0) ) + ((gX) >> 4)] == 0 &&
collision[240 + (((gYScroll + gY - 0xF0)&0xF0) ) + ((gX+0xF) >> 4)] == 0 )
{
if(gY > 0x0F)
{
gY -= 1;
}
else
{
gYScroll -= 1;
}
}
else
{
gVelocityDirection = 0;
gJumping = 0;
break;
}
}
else
{
if( collision[(((gYScroll + gY - 0x100) & 0xF0) ) + ((gX) >> 4)] == 0 &&
collision[(((gYScroll + gY - 0x100) & 0xF0) ) + ((gX+0xF) >> 4)] == 0 )
{
if(gY > 0x0F)
{
gY -= 1;
}
else
{
if( gYScroll > 0 )
{
gYScroll -= 1;
}
}
}
else
{
gVelocity = 0;
gVelocityDirection = 0;
break;
}
}
}
if( i == ((gVelocity+3)>>2) )
{
if( gVelocity == 0 )
{
gVelocityDirection = 0;
}
else
{
gVelocity -= 1;
}
}
}
else // moving down
{
for( i = 0; (i<<2) < gVelocity; i++ )
{
if(gYNametable == 2 )
{
if( collision[240 + (((gY+0x11)&0xF0) ) + ((gX) >> 4)] == 0 &&
collision[240 + (((gY+0x11)&0xF0) ) + ((gX+0xF) >> 4)] == 0 )
{
if(gY < 0xCF)
{
gY += 1;
gJumping = 1;
}
else
{
gVelocity = 0;
gJumping = 0;
break;
}
}
else
{
gVelocity = 0;
gJumping = 0;
break;
}
}
else if((gYScroll + gY + 0x11) >= 0xF0)
{
if( collision[240 + (((gYScroll + gY+0x11 - 0xF0)&0xF0) ) + ((gX) >> 4)] == 0 &&
collision[240 + (((gYScroll + gY+0x11 - 0xF0)&0xF0) ) + ((gX+0xF) >> 4)] == 0 )
{
if(gY < 0xCF)
{
gY += 1;
gJumping = 1;
}
else
{
if( gYScroll == 0xEF )
{
gYNametable = 2;
gYScroll = 0;
gVelocity = 0;
gJumping = 0;
break;
}
else
{
gYScroll+=1;
gJumping = 1;
}
}
}
else
{
gVelocity = 0;
gJumping = 0;
break;
}
}
else
{
if( collision[(((gYScroll + gY+0x11)&0xF0) ) + ((gX) >> 4)] == 0 &&
collision[(((gYScroll + gY+0x11)&0xF0) ) + ((gX+0xF) >> 4)] == 0 )
{
if(gY < 0xCF)
{
gY += 1;
}
else
{
gYScroll+=1;
}
gJumping = 1;
}
else
{
gVelocity = 0;
gJumping = 0;
break;
}
}
}
if( i == ((gVelocity+3)>>2) )
{
gVelocity+=1;
}
}
}
void scroll_right(void)
{
// set bits [1:0] to 0 for nametable
*((unsigned char*)0x2000) = 0x84 + gYNametable;
// read 0x2002 to reset the address toggle
devnull = *((unsigned char*)0x2002);
// scroll a number of pixels in the X direction
*((unsigned char*)0x2005) = gXScroll;
// scroll a number of pixels in the Y direction
*((unsigned char*)0x2005) = gYScroll;
}
void main(void)
{
vblank();
vblank();
vblank();
vblank();
vblank();
ppudisable();
palattes();
vblank();
patterntables();
//TODO should move th
PPU_ADDRESS = 0x20; // address of nametable #0 \
PPU_ADDRESS = 0x00;
UnRLE(Level1Top); // uncompresses our data
PPU_ADDRESS = 0x28; // address of nametable #2
PPU_ADDRESS = 0x00;
UnRLE(Level1Bottom); // uncompresses our data
vblank();
setup_sprites();
apuinit();
pMusicInit(0x1);
vblank();
vblank();
vblank();
vblank();
vblank();
ppuinit();
while(1)
{
vblank();
input_poll();
update_sprites();
dma_sprites();
scroll_right();
do_physics();
}
}