From: sparky4 Date: Fri, 24 Jun 2016 17:27:11 +0000 (-0500) Subject: 0.c is under study wwww X-Git-Url: http://4ch.mooo.com/gitweb/?a=commitdiff_plain;h=f316394371b48430c9e1b375640b87f1d6f267ab;p=16.git 0.c is under study wwww --- diff --git a/src/0.c b/src/0.c index 48801bca..d4f671b3 100755 --- a/src/0.c +++ b/src/0.c @@ -9,6 +9,7 @@ #define FILENAME_2 "data/aconita.pal" static unsigned char palette[768]; +global_game_variables_t gvar; int main(int argc,char **argv) { struct vrl1_vgax_header *vrl_header; @@ -59,30 +60,31 @@ int main(int argc,char **argv) { printf("VGA probe failed\n"); return 1; } - int10_setmode(19); - update_state_from_vga(); - vga_enable_256color_modex(); // VGA mode X - vga_state.vga_width = 320; // VGA lib currently does not update this - vga_state.vga_height = 240; // VGA lib currently does not update this - -//#if 1 // 320x240 test mode: this is how Project 16 is using our code, enable for test case - { - struct vga_mode_params cm; - - vga_read_crtc_mode(&cm); - - // 320x240 mode 60Hz - cm.vertical_total = 525; - cm.vertical_start_retrace = 0x1EA; - cm.vertical_end_retrace = 0x1EC; - cm.vertical_display_end = 480; - cm.vertical_blank_start = 489; - cm.vertical_blank_end = 517; - - vga_write_crtc_mode(&cm,0); - } - vga_state.vga_height = 240; // VGA lib currently does not update this +// int10_setmode(19); +// update_state_from_vga(); +// vga_enable_256color_modex(); // VGA mode X +// gvar.video.page[0].width = 320; // VGA lib currently does not update this +// gvar.video.page[0].height = 240; // VGA lib currently does not update this +// +// //#if 1 // 320x240 test mode: this is how Project 16 is using our code, enable for test case +// { +// struct vga_mode_params cm; +// +// vga_read_crtc_mode(&cm); +// +// // 320x240 mode 60Hz +// cm.vertical_total = 525; +// cm.vertical_start_retrace = 0x1EA; +// cm.vertical_end_retrace = 0x1EC; +// cm.vertical_display_end = 480; +// cm.vertical_blank_start = 489; +// cm.vertical_blank_end = 517; +// +// vga_write_crtc_mode(&cm,0); +// } +// gvar.video.page[0].height = 240; // VGA lib currently does not update this //#endif + VGAmodeX(1, 1, &gvar); /* load color palette */ fd = open(bakapee2,O_RDONLY|O_BINARY); @@ -100,15 +102,21 @@ int main(int argc,char **argv) { vrl_lineoffs = vrl1_vgax_genlineoffsets(vrl_header,buffer+sizeof(*vrl_header),bufsz-sizeof(*vrl_header)); if (vrl_lineoffs == NULL) return 1; + /* setup camera and screen~ */ + modexHiganbanaPageSetup(&gvar.video); + gvar.video.page[1].dx=gvar.video.page[0].dx=16; + gvar.video.page[1].dy=gvar.video.page[0].dy=16; + modexShowPage(&(gvar.video.page[0])); + //4 this dose the screen { unsigned int i,j,o; /* fill screen with a distinctive pattern */ - for (i=0;i < vga_state.vga_width;i++) { + for (i=0;i < gvar.video.page[0].width;i++) { o = i >> 2; vga_write_sequencer(0x02/*map mask*/,1 << (i&3)); - for (j=0;j < vga_state.vga_height;j++,o += vga_state.vga_stride) + for (j=0;j < gvar.video.page[0].height;j++,o += gvar.video.page[0].stridew) vga_state.vga_graphics_ram[o] = (i^j)&15; // VRL samples put all colors in first 15! } } @@ -119,9 +127,10 @@ int main(int argc,char **argv) { * this time, we render the distinctive pattern to another offscreen location and just copy. * note this version is much faster too! */ { - const unsigned int offscreen_ofs = (vga_state.vga_stride * vga_state.vga_height); - const unsigned int pattern_ofs = 0x10000UL - (vga_state.vga_stride * vga_state.vga_height); - unsigned int i,j,o,o2,x,y,rx,ry,w,h; + const unsigned int offscreen_ofs = (gvar.video.page[0].stridew * gvar.video.page[0].height); + const unsigned int pattern_ofs = 0x10000UL - (gvar.video.page[0].stridew * gvar.video.page[0].height); + unsigned int i,j,o,o2; + int x,y,rx,ry,w,h; unsigned int overdraw = 1; // how many pixels to "overdraw" so that moving sprites with edge pixels don't leave streaks. // if the sprite's edge pixels are clear anyway, you can set this to 0. VGA_RAM_PTR omemptr; @@ -129,10 +138,10 @@ int main(int argc,char **argv) { //4 this dose the sprite? wwww /* fill pattern offset with a distinctive pattern */ - for (i=0;i < vga_state.vga_width;i++) { + for (i=0;i < gvar.video.page[0].width;i++) { o = (i >> 2) + pattern_ofs; vga_write_sequencer(0x02/*map mask*/,1 << (i&3)); - for (j=0;j < vga_state.vga_height;j++,o += vga_state.vga_stride) + for (j=0;j < gvar.video.page[0].height;j++,o += gvar.video.page[0].stridew) vga_state.vga_graphics_ram[o] = (i^j)&15; // VRL samples put all colors in first 15! } @@ -150,24 +159,24 @@ int main(int argc,char **argv) { /* render box bounds. y does not need modification, but x and width must be multiple of 4 */ if (x >= overdraw) rx = (x - overdraw) & (~3); - else rx = 0; + else rx = -(gvar.video.page[0].dx); if (y >= overdraw) ry = (y - overdraw); - else ry = 0; + else ry = -(gvar.video.page[0].dy); h = vrl_header->height + overdraw + y - ry; w = (x + vrl_header->width + (overdraw*2) + 3/*round up*/ - rx) & (~3); - if ((rx+w) > vga_state.vga_width) w = vga_state.vga_width-rx; - if ((ry+h) > vga_state.vga_height) h = vga_state.vga_height-ry; + if ((rx+w) > gvar.video.page[0].width) w = gvar.video.page[0].width-rx; + if ((ry+h) > gvar.video.page[0].height) h = gvar.video.page[0].height-ry; /* block copy pattern to where we will draw the sprite */ vga_setup_wm1_block_copy(); o2 = offscreen_ofs; - o = pattern_ofs + (ry * vga_state.vga_stride) + (rx >> 2); // source offscreen - for (i=0;i < h;i++,o += vga_state.vga_stride,o2 += (w >> 2)) vga_wm1_mem_block_copy(o2,o,w >> 2); + o = pattern_ofs + (ry * gvar.video.page[0].stridew) + (rx >> 2); // source offscreen + for (i=0;i < h;i++,o += gvar.video.page[0].stridew,o2 += (w >> 2)) vga_wm1_mem_block_copy(o2,o,w >> 2); /* must restore Write Mode 0/Read Mode 0 for this code to continue drawing normally */ vga_restore_rm0wm0(); /* replace VGA stride with our own and mem ptr. then sprite rendering at this stage is just (0,0) */ - vga_state.vga_draw_stride_limit = (vga_state.vga_width + 3/*round up*/ - x) >> 2; + vga_state.vga_draw_stride_limit = (gvar.video.page[0].width + 3/*round up*/ - x) >> 2; vga_state.vga_draw_stride = w >> 2; vga_state.vga_graphics_ram = omemptr + offscreen_ofs; @@ -180,29 +189,31 @@ int main(int argc,char **argv) { /* block copy to visible RAM from offscreen */ vga_setup_wm1_block_copy(); o = offscreen_ofs; // source offscreen - o2 = (ry * vga_state.vga_stride) + (rx >> 2); // dest visible (original stride) - for (i=0;i < h;i++,o += vga_state.vga_draw_stride,o2 += vga_state.vga_stride) vga_wm1_mem_block_copy(o2,o,w >> 2); + o2 = (ry * gvar.video.page[0].stridew) + (rx >> 2); // dest visible (original stride) + for (i=0;i < h;i++,o += vga_state.vga_draw_stride,o2 += gvar.video.page[0].stridew) vga_wm1_mem_block_copy(o2,o,w >> 2); /* must restore Write Mode 0/Read Mode 0 for this code to continue drawing normally */ vga_restore_rm0wm0(); /* restore stride */ - vga_state.vga_draw_stride_limit = vga_state.vga_draw_stride = vga_state.vga_stride; + vga_state.vga_draw_stride_limit = vga_state.vga_draw_stride = gvar.video.page[0].stridew; /* step */ x += xdir; y += ydir; - if (x >= (vga_state.vga_width - 1) || x == 0) + if (x >= (gvar.video.page[0].width - 1) || x == 0) xdir = -xdir; - if (y >= (vga_state.vga_height - 1) || y == 0) + if (y >= (gvar.video.page[0].height - 1) || y == 0) ydir = -ydir; } } + modexShowPage(&(gvar.video.page[1])); + /* another handy "demo" effect using VGA write mode 1. * we can take what's on screen and vertically squash it like an old analog TV set turning off. */ { - unsigned int blank_line_ofs = (vga_state.vga_stride * vga_state.vga_height * 2); - unsigned int copy_ofs = (vga_state.vga_stride * vga_state.vga_height); + unsigned int blank_line_ofs = (gvar.video.page[0].stridew * gvar.video.page[0].height * 2); + unsigned int copy_ofs = (gvar.video.page[0].stridew * gvar.video.page[0].height); unsigned int display_ofs = 0x0000; unsigned int i,y,soh,doh,dstart; unsigned int dh_blankfill = 8; @@ -210,15 +221,15 @@ int main(int argc,char **argv) { uint32_t sh,dh,yf,ystep; /* copy active display (0) to offscreen buffer (0x4000) */ - vga_state.vga_draw_stride_limit = vga_state.vga_draw_stride = vga_state.vga_stride; + vga_state.vga_draw_stride_limit = vga_state.vga_draw_stride = gvar.video.page[0].stridew; vga_setup_wm1_block_copy(); - vga_wm1_mem_block_copy(copy_ofs,display_ofs,vga_state.vga_stride * vga_state.vga_height); + vga_wm1_mem_block_copy(copy_ofs,display_ofs,gvar.video.page[0].stridew * gvar.video.page[0].height); vga_restore_rm0wm0(); /* need a blank line as well */ - for (i=0;i < vga_state.vga_stride;i++) vga_state.vga_graphics_ram[i+blank_line_ofs] = 0; + for (i=0;i < gvar.video.page[0].stridew;i++) vga_state.vga_graphics_ram[i+blank_line_ofs] = 0; - sh = dh = vga_state.vga_height; + sh = dh = gvar.video.page[0].height; while (dh >= dh_step) { /* stop animating if the user hits ENTER */ if (kbhit()) { @@ -230,7 +241,7 @@ int main(int argc,char **argv) { /* what scalefactor to use for stretching? */ ystep = (0x10000UL * sh) / dh; - dstart = (vga_state.vga_height - dh) / 2; // center the squash effect on screen, otherwise it would squash to top of screen + dstart = (gvar.video.page[0].height - dh) / 2; // center the squash effect on screen, otherwise it would squash to top of screen doh = display_ofs; soh = copy_ofs; yf = 0; @@ -242,27 +253,27 @@ int main(int argc,char **argv) { /* blank lines */ if (dstart >= dh_blankfill) y = dstart - dh_blankfill; else y = 0; - doh = vga_state.vga_stride * y; + doh = gvar.video.page[0].stridew * y; while (y < dstart) { - vga_wm1_mem_block_copy(doh,blank_line_ofs,vga_state.vga_stride); - doh += vga_state.vga_stride; + vga_wm1_mem_block_copy(doh,blank_line_ofs,gvar.video.page[0].stridew); + doh += gvar.video.page[0].stridew; y++; } /* draw */ while (y < (dh+dstart)) { - soh = copy_ofs + ((yf >> 16UL) * vga_state.vga_stride); - vga_wm1_mem_block_copy(doh,soh,vga_state.vga_stride); - doh += vga_state.vga_stride; + soh = copy_ofs + ((yf >> 16UL) * gvar.video.page[0].stridew); + vga_wm1_mem_block_copy(doh,soh,gvar.video.page[0].stridew); + doh += gvar.video.page[0].stridew; yf += ystep; y++; } /* blank lines */ - while (y < vga_state.vga_height && y < (dh+dstart+dh_blankfill)) { - vga_wm1_mem_block_copy(doh,blank_line_ofs,vga_state.vga_stride); - doh += vga_state.vga_stride; + while (y < gvar.video.page[0].height && y < (dh+dstart+dh_blankfill)) { + vga_wm1_mem_block_copy(doh,blank_line_ofs,gvar.video.page[0].stridew); + doh += gvar.video.page[0].stridew; y++; } @@ -278,7 +289,7 @@ int main(int argc,char **argv) { } } - int10_setmode(3); + VGAmodeX(0, 1, &gvar); free(vrl_lineoffs); buffer = NULL; free(buffer);