0.c is under study wwww

diff --git a/src/0.c b/src/0.c
index 48801bcacd3b53557f771aab3c2ae06618eb2f03..d4f671b317636d4d5180a366bd98b90209d13c50 100755 (executable)
--- 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);