--- /dev/null
+/* X-DEMO.C - a Mode "X" Demo */\r
+/* By Matt Pritchard, 14 Apr, 1993 */\r
+\r
+#include <stdlib.h>\r
+#include <stdio.h>\r
+\r
+#include "modex.h"\r
+#include "c_utils.h"\r
+\r
+#define MAX_SHAPES 32\r
+#define MAX_SPRITES 64\r
+\r
+ /* routines in this file */\r
+\r
+void demo_res (int, int, int);\r
+int get_key (void);\r
+void error_out (char*);\r
+void load_shapes (void);\r
+int int_sqrt (int, int);\r
+void page_demo (void);\r
+\r
+ /* Structures for Sprites */\r
+\r
+struct Shape\r
+{\r
+ unsigned char Image[512];\r
+ int X_Width;\r
+ int Y_Width;\r
+} Img [MAX_SHAPES];\r
+\r
+struct Sprite\r
+{\r
+ int X_pos;\r
+ int Y_pos;\r
+ int X_Dir;\r
+ int Y_Dir;\r
+ int Shape;\r
+ int Last_X [2];\r
+ int Last_Y [2];\r
+} Obj [MAX_SPRITES];\r
+\r
+\r
+ /* MAIN */\r
+\r
+\r
+int main(int argc, char *argv[])\r
+{\r
+\r
+ /* if (argc > 0)\r
+ {\r
+ while (argc > 0)\r
+ {\r
+ dos_print ("Unknown Argument: ");\r
+ dos_print (makefp argv[argc]);\r
+ argc--;\r
+ }\r
+ return (0);\r
+\r
+ }\r
+ */\r
+\r
+ init_random ();\r
+\r
+ load_shapes ();\r
+\r
+ demo_res ( Mode_320x200, 320, 200 );\r
+ demo_res ( Mode_320x400, 320, 400 );\r
+\r
+ demo_res ( Mode_360x200, 360, 200 );\r
+ demo_res ( Mode_360x400, 360, 400 );\r
+\r
+ demo_res ( Mode_320x240, 320, 240 );\r
+ demo_res ( Mode_320x480, 320, 480 );\r
+\r
+ demo_res ( Mode_360x240, 360, 240 );\r
+ demo_res ( Mode_360x480, 360, 480 );\r
+\r
+ page_demo ();\r
+\r
+ set_video_mode (3);\r
+ dos_print ("This Mode X Demo is Finished");\r
+ return (0);\r
+\r
+}\r
+\r
+\r
+ /* Demonstrate a given resolution */\r
+\r
+\r
+void demo_res (int Screen_Mode, int X_max, int Y_max)\r
+{\r
+\r
+char *Error1 = "Failure while calling SET_MODEX";\r
+char *Error2 = "Failure during READ_PIXEL test";\r
+\r
+char *Abort_Msg = "Demo aborted by User";\r
+\r
+char *Demo_Msg = " This is a MODE X demo ";\r
+char *Scrn_Msg = "Screen Resolution is by ";\r
+char *Cont_Msg = "Press <ANY KEY> to Continue";\r
+\r
+char *Line_Msg = "LINE TEST";\r
+char *Fill_Msg = "FILL TEST";\r
+char *Pixel_Msg = "PIXEL TEST";\r
+\r
+char Text[10];\r
+\r
+int x1, y1, x2, y2 = 0;\r
+int x, y, z = 0;\r
+int X_Center, gap = 0;\r
+\r
+\r
+ if (set_modex (Screen_Mode) == 0)\r
+ {\r
+ error_out (Error1);\r
+ }\r
+\r
+ X_Center = X_max / 2;\r
+\r
+ x1 = 10;\r
+ y1 = 10;\r
+ x2 = X_max - 1;\r
+ y2 = Y_max - 1;\r
+\r
+ for (z = 0; z <= 3; z++)\r
+ {\r
+ y = 31 - z -z;\r
+ draw_line (x1+z, y1+z, x2-z, y1+z, y);\r
+ draw_line (x1+z, y1+z, x1+z, y2-z, y);\r
+ draw_line (x1+z, y2-z, x2-z, y2-z, y);\r
+ draw_line (x2-z, y1+z, x2-z, y2-z, y);\r
+ }\r
+\r
+ for (x = 0; x < (X_max / 10); x++)\r
+ {\r
+ tgprintc (48 + ((x+1) % 10), x*10+1, 1, 9 + ((x/8) % 7) );\r
+ draw_line (x*10+9, 0, x*10+9, 3, c_bWHITE);\r
+ }\r
+\r
+ for (y = 0; y < (Y_max / 10); y++)\r
+ {\r
+ tgprintc (48 + ((y+1) % 10), 1, y*10+1, 9 + ((y/10) % 7) );\r
+ draw_line (0, y*10+9, 3, y*10+9, c_bWHITE);\r
+ }\r
+\r
+ for (x = 0; x <= 63; x++)\r
+ {\r
+ z = 15 + (x * 3 / 4);\r
+ set_dac_register (64+x, z, z, z);\r
+ set_dac_register (128+x, 0, z, z);\r
+\r
+ draw_line (103-x, 60, 40+x, 123, 64+x);\r
+ draw_line (40, 60+x, 103, 123-x, 128+x);\r
+\r
+ }\r
+\r
+ tprint_str (Line_Msg, 9, 37, 130, c_BLUE);\r
+\r
+ y = 60;\r
+ gap = 0;\r
+ for (x = 0; x <= 9; x++)\r
+ {\r
+ fill_block (120, y, 120+x, y+gap, 64+x);\r
+ fill_block (140 - (15-x), y, 150+x, y+gap, 230+x);\r
+ fill_block (170 - (15-x), y, 170, y+gap, 128+x);\r
+ y = y + gap + 2;\r
+ gap++;\r
+ }\r
+\r
+ tprint_str (Fill_Msg, 9, 110, 46, c_GREEN);\r
+\r
+ for (x = 190; x <= 250; x+=2)\r
+ {\r
+ for (y = 60; y <= 122; y+=2)\r
+ {\r
+ z = (x+x+y+y) & 0xff;\r
+ set_point (x, y, z);\r
+ }\r
+ }\r
+\r
+ tprint_str (Pixel_Msg, 10, 182, 130, c_RED);\r
+\r
+ for (x = 190; x <= 250; x+=2)\r
+ {\r
+ for (y = 60; y <= 122; y+=2)\r
+ {\r
+ z = (x+x+y+y) & 0xff;\r
+ if (read_point(x, y) != z)\r
+ {\r
+ error_out (Error2);\r
+ }\r
+ }\r
+ }\r
+\r
+ print_str (Demo_Msg, 23, X_Center - 92, 20, c_bRED, c_BLUE);\r
+\r
+ x = X_Center - 124;\r
+ print_str (Scrn_Msg, 28, x, 30, c_bGREEN, c_BLACK);\r
+\r
+ sprintf (Text, "%3d", X_max);\r
+ print_str (Text, 3, x+168, 30, c_bPURPLE, c_BLACK);\r
+\r
+ sprintf (Text, "%3d", Y_max);\r
+ print_str (Text, 3, x + 224, 30, c_bWHITE, c_BLACK);\r
+\r
+ for (x = 0; x <= 15; x++)\r
+ {\r
+ set_dac_register (230+x, 63-x*4, 0, 15+x*3);\r
+ draw_line (30+x, Y_max-6-x, X_max-20-x, Y_max-6-x, 230+x);\r
+ }\r
+\r
+ tprint_str (Cont_Msg, 27, X_Center - 103, Y_max-18, c_YELLOW);\r
+\r
+ if (get_key () == Ky_ESC)\r
+ {\r
+ error_out (Abort_Msg);\r
+ }\r
+\r
+ return ;\r
+\r
+}\r
+\r
+\r
+ /* Wait for a Keystroke */\r
+\r
+\r
+int get_key(void)\r
+{\r
+\r
+int c = 0;\r
+\r
+ while (c == 0)\r
+ {\r
+ c = scan_keyboard ();\r
+ }\r
+\r
+ return (c);\r
+\r
+}\r
+\r
+\r
+ /* Error Handling Routine */\r
+\r
+\r
+void error_out (char * text)\r
+{\r
+\r
+ set_video_mode (3);\r
+ dos_print (text);\r
+ exit (EXIT_SUCCESS);\r
+\r
+}\r
+\r
+\r
+ /* Routine to generate random sprites */\r
+\r
+\r
+void load_shapes ()\r
+{\r
+\r
+unsigned char Grid[33][33];\r
+\r
+char *Error1 = "Bad Shape Selected Error";\r
+\r
+int Shape;\r
+int x, y, z;\r
+int Style, Color;\r
+int X_Width, Y_Width, Center, S_Width;\r
+int Hollow_X, Hollow_Y;\r
+\r
+ for (Shape = 0; Shape < MAX_SHAPES; Shape++)\r
+ {\r
+ for (y = 0; y <= 32; y++)\r
+ {\r
+ for (x = 0; x <= 32; x++)\r
+ {\r
+ Grid[x][y] = c_BLACK;\r
+ }\r
+ }\r
+\r
+ Style = random_int (6);\r
+ Color = 1 + random_int (15);\r
+\r
+ switch (Style)\r
+\r
+ {\r
+ /* SOLID BOXES */\r
+\r
+ case 0:\r
+\r
+ {\r
+ do\r
+ {\r
+ X_Width = 3 + random_int(30);\r
+ Y_Width = 3 + random_int(30);\r
+\r
+ } while ( (X_Width * Y_Width) >= 512);\r
+\r
+ for (x = 1; x <= X_Width; x++)\r
+ {\r
+ for (y = 1; y <= Y_Width; y++)\r
+ {\r
+ Grid[x][y] = Color;\r
+ }\r
+ }\r
+\r
+ break;\r
+\r
+ }\r
+ /* HOLLOW BOXES */\r
+\r
+ case 1:\r
+\r
+ {\r
+ do {\r
+ X_Width = 6 + random_int(27);\r
+ Y_Width = 6 + random_int(27);\r
+ } while ( (X_Width * Y_Width) >= 512);\r
+\r
+ for (y = 1; y <= Y_Width; y++)\r
+ {\r
+ for (x = 1; x <= X_Width; x++)\r
+ {\r
+ Grid[x][y] = Color;\r
+ }\r
+ }\r
+\r
+ Hollow_X = 1 + random_int ((X_Width / 2) -1);\r
+ Hollow_Y = 1 + random_int ((Y_Width / 2) -1);\r
+\r
+ for (y = Hollow_Y+1; y <= Y_Width-Hollow_Y; y++)\r
+ {\r
+ for (x = Hollow_X+1; x <= X_Width-Hollow_X; x++)\r
+ {\r
+ Grid[x][y] = c_BLACK;\r
+ }\r
+ }\r
+\r
+ break;\r
+\r
+ }\r
+\r
+ /* SOLID DIAMOND */\r
+\r
+ case 2:\r
+\r
+ {\r
+\r
+ X_Width = 3 + 2 * random_int(10);\r
+ Y_Width = X_Width;\r
+ Center = X_Width / 2;\r
+\r
+ for (y = 0; y <= Center; y++)\r
+ {\r
+ for (x = 0; x <= y; x++)\r
+ {\r
+ Grid [Center-x+1][y+1] = Color;\r
+ Grid [Center+x+1][y+1] = Color;\r
+ Grid [Center-x+1][Y_Width-y] = Color;\r
+ Grid [Center+x+1][Y_Width-y] = Color;\r
+ }\r
+ }\r
+\r
+ break;\r
+\r
+ }\r
+\r
+ /* HOLLOW DIAMOND */\r
+\r
+ case 3:\r
+\r
+ {\r
+\r
+ X_Width = 3 + 2 * random_int(10);\r
+ Y_Width = X_Width;\r
+ Center = X_Width / 2;\r
+ S_Width = random_int (Center);\r
+\r
+ for (y = 0; y <= Center; y++)\r
+ {\r
+ for (x = 0; x <= y; x++)\r
+ {\r
+ if ( x+(Center-y) >= S_Width )\r
+ {\r
+ Grid [Center-x+1][y+1] = Color;\r
+ Grid [Center+x+1][y+1] = Color;\r
+ Grid [Center-x+1][Y_Width-y] = Color;\r
+ Grid [Center+x+1][Y_Width-y] = Color;\r
+ }\r
+ }\r
+ }\r
+\r
+ break;\r
+\r
+ }\r
+\r
+ /* BALL */\r
+\r
+ case 4:\r
+\r
+ {\r
+\r
+ X_Width = 7 + 2 * random_int (8);\r
+ Y_Width = X_Width;\r
+ Center = 1 + X_Width / 2;\r
+\r
+ for (y = 1; y <= Y_Width; y++)\r
+ {\r
+ for (x = 1; x <= X_Width; x++)\r
+ {\r
+ z = int_sqrt(Center-x, Center-y);\r
+ if (z < Center)\r
+ {\r
+ Grid[x][y] = 150 + Color * 2 + z * 3;\r
+ }\r
+ }\r
+ }\r
+\r
+ break;\r
+ }\r
+\r
+ /* HOLLOW BALLS */\r
+\r
+ case 5:\r
+\r
+ {\r
+ X_Width = 7 + 2 * random_int (8);\r
+ Y_Width = X_Width;\r
+ Center = 1 + X_Width / 2;\r
+ S_Width = random_int (X_Width);\r
+\r
+ for (y = 1; y <= Y_Width; y++)\r
+ {\r
+ for (x = 1; x <= X_Width; x++)\r
+ {\r
+ z = int_sqrt(Center-x, Center-y);\r
+ if ( (z < Center) && (z >= S_Width) )\r
+ {\r
+ Grid[x][y] = 150 + Color * 2 + z * 3;\r
+ }\r
+ }\r
+ }\r
+\r
+\r
+ break;\r
+ }\r
+\r
+ default:\r
+\r
+ {\r
+ error_out (Error1);\r
+ break;\r
+\r
+ }\r
+\r
+ }\r
+\r
+ z = 0;\r
+ for (y = 1; y <= Y_Width; y++)\r
+ {\r
+ for (x = 1; x <= X_Width; x++)\r
+ {\r
+ Img[Shape].Image[z] = Grid[x][y];\r
+ z++;\r
+ }\r
+ }\r
+\r
+ Img[Shape].X_Width = X_Width;\r
+ Img[Shape].Y_Width = Y_Width;\r
+\r
+ }\r
+\r
+ return;\r
+}\r
+\r
+\r
+ /* Quickie Psuedo Integer Square Root Routine */\r
+\r
+\r
+int int_sqrt ( int x, int y )\r
+{\r
+\r
+int Sqr_Table[12] = {1, 4, 9, 6, 25, 36, 49, 64, 81, 100, 121, 144};\r
+\r
+int r, d;\r
+\r
+ d = (x * x) + (y * y);\r
+ r = 0;\r
+\r
+ while ( d >= Sqr_Table[r] )\r
+ {\r
+ r++;\r
+ }\r
+\r
+ return (r);\r
+\r
+}\r
+\r
+\r
+ /* The Bit Sprite Demo */\r
+\r
+\r
+void page_demo ()\r
+{\r
+\r
+char *Error1 = "Failure during SET_VGA_MODEX (0, 320, 200, 2) call";\r
+\r
+int Last_Objects[2], Visible_Objects;\r
+\r
+int Screen_X = 384;\r
+int Screen_Y = 224;\r
+\r
+int x, y, z;\r
+int c, dc;\r
+int x1, y1, x2, y2;\r
+\r
+int Sprite_X, Sprite_Y;\r
+int Current_Page;\r
+int New_X, New_Y;\r
+\r
+int View_X, View_Y, View_Max, View_Cnt, View_XD, View_YD;\r
+int Set_Color, Prev_Color, S_Dir, P_Dir;\r
+\r
+int Demo_Running = True;\r
+int redo, code;\r
+\r
+int pee;\r
+pee = set_vga_modex(Mode_320x200, Screen_X, Screen_Y, 3);\r
+ if ( pee > 0)\r
+ {\r
+ set_video_mode (3);\r
+ dos_print (Error1);\r
+ fprintf(stdout, "return value is %d\n", pee);\r
+ //error_out (Error1);\r
+ exit (EXIT_SUCCESS);\r
+ }\r
+\r
+ set_active_page (0);\r
+ clear_vga_screen (c_BLACK);\r
+\r
+ print_str ("This is a Test of the Following Functions:", 99, 10, 9, c_bWHITE, c_BLACK);\r
+\r
+ draw_line (10, 18, 350, 18, c_YELLOW);\r
+ print_str ("SET_ACTIVE_PAGE", 99, 10, 20, c_bBLUE, c_BLACK);\r
+ print_str ("SET_DISPLAY_PAGE", 99, 10, 30, c_GREEN, c_BLACK);\r
+ print_str ("SET_DAC_REGISTER", 99, 10, 40, c_RED, c_BLACK);\r
+ print_str ("CLEAR_VGA_SCREEN", 99, 10, 50, c_CYAN, c_BLACK);\r
+\r
+ print_str ("TDRAW_BITMAP", 99, 10, 60, c_PURPLE, c_BLACK);\r
+ print_str ("COPY_PAGE", 99, 10, 70, c_GREEN, c_BLACK);\r
+ print_str ("COPY_BITMAP", 99, 10, 80, c_CYAN, c_BLACK);\r
+\r
+ print_str ("GPRINTC", 99, 10, 90, c_BLUE, c_BLACK);\r
+ print_str ("TGPRINTC", 99, 10, 100, c_GREEN, c_BLACK);\r
+ print_str ("SET_WINDOW", 99, 10, 110, c_RED, c_BLACK);\r
+\r
+ print_str ("VIRTUAL SCREEN SIZES", 20, 190, 20, c_bBLUE, c_BLACK);\r
+ print_str (" SMOOTH SCROLLING", 20, 190, 30, c_GREEN, c_BLACK);\r
+ print_str (" SPRITE ANIMATION", 20, 190, 40, c_CYAN, c_BLACK);\r
+ print_str (" PAGE FLIPPING", 20, 190, 50, c_RED, c_BLACK);\r
+ print_str (" COLOR CYCLING", 20, 190, 60, c_PURPLE, c_BLACK);\r
+\r
+ for (x = 0; x <=60; x++)\r
+ {\r
+ set_dac_register (50 + x, 3 + x, 0, 60 - x);\r
+ set_dac_register (150 + x, 3 + x, 0, 60 - x);\r
+ }\r
+\r
+ c = 0;\r
+ dc = 1;\r
+ for (x = 0; x <= (Screen_X / 2); x++)\r
+ {\r
+ draw_line (Screen_X / 2 - 1, Screen_Y / 4, x, Screen_Y - 1, c + 50);\r
+ draw_line (Screen_X / 2, Screen_Y / 4, Screen_X - x - 1, Screen_Y - 1, c + 50);\r
+ c+= dc;\r
+ if ((c == 0) || (c == 60) ) { dc = -dc;}\r
+ }\r
+\r
+ tprint_str ("Press <ANY KEY> to Continue", 99, 72, 190, c_bWHITE);\r
+ tprint_str ("< > = Faster < > = Slower", 99, 72, 204, c_bGREEN);\r
+ tprint_str ("< > = Fewer Shapes < > = More Shapes", 99, 32, 218, c_bCYAN);\r
+\r
+ tgprintc (43, 80, 204, c_YELLOW);\r
+ tgprintc (45, 200, 204, c_YELLOW);\r
+\r
+ tgprintc (25, 40, 218, c_YELLOW);\r
+ tgprintc (24, 200, 218, c_YELLOW);\r
+\r
+ copy_page (0, 1);\r
+ copy_page (0, 2);\r
+\r
+ for (x = 0; x < MAX_SPRITES; x++)\r
+ {\r
+ do {\r
+ Obj[x].X_Dir = random_int(7) - 3;\r
+ Obj[x].Y_Dir = random_int(7) - 3;\r
+ } while ( (Obj[x].X_Dir == 0) && (Obj[x].Y_Dir == 0) );\r
+\r
+ Obj[x].Shape = x % MAX_SHAPES;\r
+\r
+ Sprite_X = Img[Obj[x].Shape].X_Width;\r
+ Sprite_Y = Img[Obj[x].Shape].Y_Width;\r
+\r
+ Obj[x].X_pos = 1 + random_int(Screen_X - Sprite_X - 2);\r
+ Obj[x].Y_pos = 1 + random_int(Screen_Y - Sprite_Y - 2);\r
+\r
+ Obj[x].Last_X[0] = Obj[x].X_pos;\r
+ Obj[x].Last_X[1] = Obj[x].X_pos;\r
+ Obj[x].Last_Y[0] = Obj[x].Y_pos;\r
+ Obj[x].Last_Y[1] = Obj[x].Y_pos;\r
+\r
+ }\r
+\r
+ Current_Page = 0;\r
+\r
+ View_X = 0;\r
+ View_Y = 0;\r
+ View_Max = 3;\r
+ View_Cnt = 0;\r
+ View_XD = 1;\r
+ View_YD = 1;\r
+\r
+ Set_Color = 3;\r
+ S_Dir = 1;\r
+ Prev_Color = 0;\r
+ P_Dir = 1;\r
+\r
+ Visible_Objects = MAX_SPRITES / 2;\r
+ Last_Objects[0] = 0;\r
+ Last_Objects[1] = 0;\r
+\r
+ while (Demo_Running)\r
+ {\r
+\r
+ set_active_page (Current_Page);\r
+\r
+ /* Erase Old Images */\r
+\r
+ for (x = 0; x <= Last_Objects[Current_Page]; x++)\r
+ {\r
+ z = 2;\r
+ y = Obj[x].Shape;\r
+ x1 = Obj[x].Last_X[Current_Page];\r
+ y1 = Obj[x].Last_Y[Current_Page];\r
+ x2 = x1 + Img[y].X_Width -1;\r
+ y2 = y1 + Img[y].Y_Width -1;\r
+\r
+ x1 = x1 & 0xfffc;\r
+ x2 = x2 | 0x0003;\r
+\r
+ copy_bitmap (z, x1, y1, x2, y2, Current_Page, x1, y1);\r
+ }\r
+\r
+ /* Draw new images */\r
+\r
+ for (x = 0; x <= Visible_Objects; x++)\r
+ {\r
+ Sprite_X = Img[Obj[x].Shape].X_Width;\r
+ Sprite_Y = Img[Obj[x].Shape].Y_Width;\r
+\r
+ /* Move Sprite */\r
+\r
+ do\r
+ {\r
+ redo = False;\r
+ New_X = Obj[x].X_pos + Obj[x].X_Dir;\r
+\r
+ if (( New_X < 0 ) || (New_X + Sprite_X > Screen_X) )\r
+ {\r
+ Obj[x].X_Dir = -Obj[x].X_Dir;\r
+ if (random_int(20) == 1)\r
+ {\r
+ do\r
+ {\r
+ Obj[x].X_Dir = random_int(7) - 3;\r
+ Obj[x].Y_Dir = random_int(7) - 3;\r
+ } while ( (Obj[x].X_Dir == 0) && (Obj[x].Y_Dir == 0) );\r
+ redo = True;\r
+ }\r
+ }\r
+ } while (redo);\r
+ Obj[x].X_pos = Obj[x].X_pos + Obj[x].X_Dir;\r
+\r
+\r
+ do\r
+ {\r
+ redo = False;\r
+ New_Y = Obj[x].Y_pos + Obj[x].Y_Dir;\r
+\r
+ if ( (New_Y < 0) || (New_Y + Sprite_Y > Screen_Y) )\r
+ {\r
+ Obj[x].Y_Dir = -Obj[x].Y_Dir;\r
+ if (random_int(20) == 1)\r
+ {\r
+ do\r
+ {\r
+ Obj[x].X_Dir = random_int(7) - 3;\r
+ Obj[x].Y_Dir = random_int(7) - 3;\r
+ } while ( (Obj[x].X_Dir == 0) && (Obj[x].Y_Dir == 0) );\r
+ redo = True;\r
+ }\r
+ }\r
+ } while (redo);\r
+\r
+ Obj[x].Y_pos = Obj[x].Y_pos + Obj[x].Y_Dir;\r
+\r
+ /* Draw Sprite */\r
+\r
+ tdraw_bitmap ((char far*) &Img[Obj[x].Shape], Obj[x].X_pos, Obj[x].Y_pos, Sprite_X, Sprite_Y);\r
+\r
+ Obj[x].Last_X[Current_Page] = Obj[x].X_pos;\r
+ Obj[x].Last_Y[Current_Page] = Obj[x].Y_pos;\r
+\r
+ }\r
+\r
+ Last_Objects[Current_Page] = Visible_Objects;\r
+\r
+\r
+ /* Pan Screen Back & Forth */\r
+\r
+ View_Cnt++;\r
+ if (View_Cnt >= View_Max)\r
+ {\r
+ View_X+= View_XD;\r
+ if ( (View_X == 0) || (View_X == 39) ) {View_XD = -View_XD;}\r
+ if (View_XD < 0)\r
+ {\r
+ View_Y+= View_YD;\r
+ if ( (View_Y == 0) || (View_Y == 39) ) {View_YD = -View_YD;}\r
+ }\r
+\r
+ set_window (Current_Page, View_X, View_Y);\r
+\r
+ View_Cnt = 0;\r
+ }\r
+ else\r
+ {\r
+ set_display_page (Current_Page);\r
+ }\r
+\r
+ /* Cycle Colors */\r
+\r
+ set_dac_register (50 + Prev_Color, 3 + Prev_Color, 0, 60 - Prev_Color);\r
+ set_dac_register (50 + Set_Color, Set_Color, 10, 63 - Set_Color);\r
+\r
+ set_dac_register (150 + Prev_Color, 3 + Prev_Color, 0, 60 - Prev_Color);\r
+ set_dac_register (150 + Set_Color, 63, 63, Set_Color);\r
+\r
+ Set_Color+= S_Dir;\r
+ if ( (Set_Color == 60) || (Set_Color == 0) ) {S_Dir = -S_Dir;}\r
+\r
+ Prev_Color+= P_Dir;\r
+ if ( (Prev_Color == 60) || (Prev_Color == 0) ) {P_Dir = -P_Dir;}\r
+\r
+ /* Check for Keystroke */\r
+\r
+ Current_Page = Current_Page ^ 0x01;\r
+\r
+ code = scan_keyboard ();\r
+\r
+ if (code == Ky_ESC) {Demo_Running = False;}\r
+\r
+ if (code == Ky_Plus)\r
+ {\r
+ if (View_Max < 12) {View_Max++;}\r
+ }\r
+\r
+ if (code == Ky_Minus)\r
+ {\r
+ if (View_Max > 1) {View_Max--;}\r
+ if (View_Cnt >= View_Max) {View_Cnt = 0;}\r
+ }\r
+\r
+ if (code == Ky_Up)\r
+ {\r
+ if (Visible_Objects < MAX_SPRITES-1) {Visible_Objects++;}\r
+ }\r
+\r
+ if (code == Ky_Down)\r
+ {\r
+ if (Visible_Objects > 0) {Visible_Objects--;}\r
+ }\r
+\r
+ }\r
+\r
+}\r
projects / 16.git / blobdiff