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C/C++ Source or Header | 1996-05-16 | 14.4 KB | 421 lines

// Header file GRAPHICS.C // D E F I N E S ///////////////////////////////////////////////////////////// #define SCREEN_WIDTH (unsigned int)320 // mode 13h screen dimensions #define SCREEN_HEIGHT (unsigned int)200 // screen transition commands #define SCREEN_DARKNESS 0 // fade to black #define SCREEN_WHITENESS 1 // fade to white #define SCREEN_WARP 2 // warp the screen image #define SCREEN_SWIPE_X 3 // do a horizontal swipe #define SCREEN_SWIPE_Y 4 // do a vertical swipe #define SCREEN_DISOLVE 5 // a pixel disolve #define VGA_INPUT_STATUS_1 0x3DA // VGA input status register number 1 // D3 is vertical retrace bit // 1 - retrace in progress // 0 - no retrace #define VGA_VRETRACE_MASK 0x08 // masks off unwanted bit of status reg #define SPRITE_WIDTH 16 // default width of a sprite #define SPRITE_HEIGHT 16 // default height of a sprite #define MAX_SPRITE_FRAMES 4 // sprite states #define SPRITE_DEAD 0 #define SPRITE_ALIVE 1 #define SPRITE_DYING 2 // mode Z page stuff #define PAGE_0 0 #define PAGE_1 1 // these are used to change the visual page of the VGA #define CRT_ADDR_LOW 0x0D // the index of the low byte of the start address #define CRT_ADDR_HI 0x0C // the index of the hi byte of the start address #define GRAPHICS_MODE13 0x13 // 320x200x256 #define TEXT_MODE 0x03 // 80x25 text mode #define COLOR_MASK 0x3C6 // the bit mask register #define COLOR_REGISTER_RD 0x3C7 // set read index at this I/O #define COLOR_REGISTER_WR 0x3C8 // set write index at this I/O #define COLOR_DATA 0x3C9 // the R/W data is here // size of the "tech" font used in intro #define TECH_FONT_WIDTH 4 // width of high tech font #define TECH_FONT_HEIGHT 7 // height of high tech font #define NUM_TECH_FONT 64 // number of characters in tech font // ROM character set stuff #define ROM_CHAR_SET_SEG 0xF000 // segment of 8x8 ROM character set #define ROM_CHAR_SET_OFF 0xFA6E // begining offset of 8x8 ROM character set #define ROM_CHAR_WIDTH 8 // width of ROM 8x8 character set in pixels #define ROM_CHAR_HEIGHT 8 // height of ROM 8x8 character set in pixels #define MODE13_WIDTH (unsigned int)320 // mode 13h screen dimensions #define MODE13_HEIGHT (unsigned int)200 // the VGA card controller ports #define SEQUENCER 0x3C4 // the sequencer's index port #define CRT_CONTROLLER 0x3D4 // the crt controller's index port #define GFX_CONTROLLER 0x3CE // the graphics controller's index port #define ATTR_CONTROLLER_FF 0x3DA // the attribute controller's Flip Flop #define ATTR_CONTROLLER_DATA 0x3C0 // the attribute controller's data port // defines for the CRT controller registers of interest #define CRT_MAX_SCANLINE 0x09 // the maximum scanline register // used to select how many scanlines // per row #define CRT_ADDR_MODE 0x14 // the address mode register // used to select byte addressing // for VGA // also known as the underline register #define CRT_MODE_CONTROL 0x17 // the mode control register // used to select single byte addressing // defines for the GFX controller registers of interest #define GFX_WRITE_MODE 0x05 // the memory write mode register // used to deselect even/odd plane // addressing #define GFX_MISC 0x06 // the miscellaneous register // used to deselect the chaining // of memory // defines for the SEQUENCER registers of interest #define SEQ_PLANE_ENABLE 0x02 // plane enable register, used to select // which planes are written to by a // CPU write #define SEQ_MEMORY_MODE 0x04 // the memory mode register // used to deselect memory chain mode // and odd/even memory addressing // M A C R O S /////////////////////////////////////////////////////////////// #define SET_BITS(x,bits) (x | bits) #define RESET_BITS(x,bits) (x & ~bits) #define SET_SPRITE_SIZE(w,h) {sprite_width=w; sprite_height=h;} // S T R U C T U R E S /////////////////////////////////////////////////////// typedef struct grid_typ { int beenShotAt; int coveredByShip; int * coveredByWhat; } gridSquare, *gridSquare_ptr; typedef struct shipSquare_typ { int x; int y; int hit; } shipSquare, *shipSquare_ptr; // this structure holds a RGB triple in three unsigned bytes typedef struct RGB_color_typ { unsigned char red; // red component of color 0-63 unsigned char green; // green component of color 0-63 unsigned char blue; // blue component of color 0-63 } RGB_color, *RGB_color_ptr; // this structure holds an entire color palette typedef struct RGB_palette_typ { int start_reg; // index of the starting register that is save int end_reg; // index of the ending registe that is saved RGB_color colors[256]; // the storage area for the palette } RGB_palette, *RGB_palette_ptr; // the PCX file structure typedef struct pcx_header_typ { char manufacturer; // the manufacturer of the file char version; // the file format version char encoding; // type of compression char bits_per_pixel; // number of bits per pixel int x,y; // starting location of image int width,height; // size of image int horz_res; // resolution in DPI (dots per inch) int vert_res; char ega_palette[48]; // the old EGA palette (usually ignored) char reserved; // don't care char num_color_planes; // number of color planes int bytes_per_line; // number of bytes per line of the image int palette_type; // 1 for color, 2 for grey scale palette char padding[58]; // extra bytes } pcx_header, *pcx_header_ptr; // this holds the PCX header and the actual image typedef struct pcx_picture_typ { pcx_header header; // the header of the PCX file RGB_color palette[256]; // the palette data unsigned char far *buffer; // a pointer to the 64,000 byte buffer // holding the decompressed image } pcx_picture, *pcx_picture_ptr; // this is a sprite structure typedef struct sprite_typ { int x,y, x_old, y_old; // position of sprite int width,height; // dimensions of sprite in pixels int counter_1; // some counters for timing and animation int counter_2; int counter_3; int howManyTimesHit; shipSquare coveredSquare1; shipSquare coveredSquare2; shipSquare coveredSquare3; /* int threshold_1; // thresholds for the counters (if needed) int threshold_2; int threshold_3; */ unsigned char far *frames[MAX_SPRITE_FRAMES]; // array of pointers to // the images int curr_frame; // current frame being displayed int num_frames; // total number of frames int state; // state of sprite, alive, dead... unsigned char far *background; // image under the sprite int x_clip,y_clip; // clipped position of sprite int width_clip,height_clip; // clipped size of sprite int visible; // used by sprite engine to flag // if a sprite was invisible last // time it was drawn hence the background // need not be replaced int verticalOrHorizantal; } sprite, *sprite_ptr; // this is the typedef for a bitmap typedef struct bitmap_typ { int x,y; // position of bitmap int width,height; // size of bitmap unsigned char far *buffer; // buffer holding image } bitmap, *bitmap_ptr; // this is a typdef used for the layers in parallax scrolling // note it is identical to a bitmap, but we'll make a separate typedef // in the event we later need to add fields to it typedef struct layer_typ { int x,y; // used to hold position information // no specific function int width,height; // size of layer,note:width must be divisible by 2 unsigned char far *buffer; // the layer buffer } layer, *layer_ptr; // P R O T O T Y P E S /////////////////////////////////////////////////////// void Print_Char(int xc,int yc,char c,int color,int transparent); void Print_String(int x,int y,int color, char *string,int transparent); void Write_Pixel(int x,int y,int color); int Read_Pixel(int x,int y); void Set_Graphics_Mode(int mode); void Time_Delay(int clicks); void Line_H(int x1,int x2,int y,int color); void Line_V(int y1,int y2,int x,int color); void Write_Color_Reg(int index, RGB_color_ptr color); void Read_Palette(int start_reg,int end_reg, RGB_palette_ptr the_palette); void Write_Palette(int start_reg,int end_reg, RGB_palette_ptr the_palette); RGB_color_ptr Read_Color_Reg(int index, RGB_color_ptr color); void Draw_Rectangle(int x1,int y1,int x2,int y2,int color); void Fill_Screen(int color); void Fill_Screen_Z(int color); void Write_Pixel_Z(int x,int y,int color); void Set_Mode_Z(void); extern void Fill_da_screen(void); int PCX_Init(pcx_picture_ptr image); int PCX_Load(char *filename, pcx_picture_ptr image, int load_palette); void PCX_Delete(pcx_picture_ptr image); void PCX_Show_Buffer(pcx_picture_ptr image, int appear_from_black); void PCX_Copy_To_Buffer(pcx_picture_ptr image,unsigned char far *buffer); void PCX_Get_Sprite(pcx_picture_ptr image, sprite_ptr sprite, int sprite_frame, int cell_x, int cell_y); void Sprite_Init(sprite_ptr sprite,int x,int y, int x_old, int y_old, int width, int height, int c1,int c2,int c3, int xGrid, int yGrid); void Sprite_Delete(sprite_ptr sprite); void Sprite_Under(sprite_ptr sprite, unsigned char far *buffer); void Sprite_Erase(sprite_ptr sprite, unsigned char far *buffer); void Sprite_Draw(sprite_ptr sprite, unsigned char far *buffer,int transparent); void Sprite_Under_Clip(sprite_ptr sprite, unsigned char far *buffer); void Sprite_Erase_Clip(sprite_ptr sprite, unsigned char far *buffer); void Sprite_Draw_Clip(sprite_ptr sprite, unsigned char far *buffer,int transparent); int Sprite_Collide(sprite_ptr sprite_1, sprite_ptr sprite_2); void Display_Double_Buffer(unsigned char far *buffer,int y); int Create_Double_Buffer(int num_lines); void Fill_Double_Buffer(int color); void Delete_Double_Buffer(void); void Screen_Transition(int effect); void Wait_For_Vertical_Retrace(void); void fwordcpy(void far *destination, void far *source,int num_words); void Bitmap_Get(bitmap_ptr image, unsigned char far *source); void Bitmap_Put(bitmap_ptr image, unsigned char far *destination,int transparent); int Bitmap_Allocate(bitmap_ptr image, int width, int height); void Bitmap_Delete(bitmap_ptr the_bitmap); int Layer_Create(layer_ptr dest_layer, int width, int height); void Layer_Build(layer_ptr dest_layer,int dest_x, int dest_y, unsigned char far *source_buffer,int source_x,int source_y, int width,int height); void Layer_Draw(layer_ptr source_layer, int source_x, int source_y, unsigned char far *dest_buffer,int dest_y,int dest_height, int transparent); void Layer_Delete(layer_ptr the_layer); void Print_Char_DB(int xc,int yc,char c,int color,int transparent); void Print_String_DB(int x,int y,int color, char *string,int transparent); void Write_Pixel_DB(int x,int y,int color); int Read_Pixel_DB(int x,int y); void Set_Working_Page_Mode_Z(int page); void Set_Visual_Page_Mode_Z(int page); extern void PCX_show_da_buffer(void); extern void Display_da_double_buffer(void); extern void Fill_da_double_buffer(void); extern void copy_da_fword(void); void Tech_Print(int x,int y,char *string,unsigned char far *destination); void Font_Engine_1(int x,int y, int font,int color, char *string,unsigned char far *destination); // E X T E R N A L S ///////////////////////////////////////////////////////////// extern unsigned char far *video_buffer; // video ram byte ptr extern unsigned char far *rom_char_set; // rom characters 8x8 extern unsigned char far *double_buffer; // the double buffer extern unsigned int double_buffer_height; // height of double buffer extern unsigned int double_buffer_size; // total size of buffer in bytes extern unsigned int sprite_width; // width of a sprite extern unsigned int sprite_height; // of a sprite extern unsigned char far *page_0_buffer; // pointer to mode z page 0 extern unsigned char far *page_1_buffer; // pointer to mode z page 0 extern int mode_z_page; // current mode z page extern int raw_key; // the global raw keyboard data aquired from the ISR extern int key_table[4]; // the key state table for the motion keys extern unsigned int far *clock; // pointer to internal extern sprite shell; extern pcx_picture background, shell_back, ships_back; extern bitmap tech_font[NUM_TECH_FONT];