Begin writing code to update the tiles

src/game_vdp_graphics.h

@@ -13,7 +13,7 @@
 void vdp_clear_gamegrid(void);
 void vdp_clear_dialog(void);
 uint8_t vdp_draw_numtile(uint8_t type, uint8_t x, uint8_t y);
-void vdp_redraw_tiles(void);
+void vdp_redraw_tiles(uint8_t *grid);
 void vdp_draw_joystick(uint8_t position);
 
 #endif /* _GAME_VDP_GRAPHICS_HEADER_ */

src/game_vdp_graphics.s

@@ -4,14 +4,52 @@
 			.extern _Zp
 			.extern VDP_MEM, VDP_REG
 			
-			.extern vdp_point_to_vram_xy
+			.extern vdp_point_to_vram_xy, vdp_hide_sprite, vdp_show_sprite, vdp_set_sprite_tile
 
 NUM_TILE_OFFSET:	.equ	0x14
 
 			.section code,text
 
 vdp_redraw_tiles:
-			;;; TODO	
+P_GRID_H$:	.equ	_Zp+9
+P_GRID_L$:	.equ	_Zp+8
+
+			lda		zp:_Zp+0
+			sta		zp:P_GRID_L$
+			lda		zp:_Zp+1
+			sta		zp:P_GRID_H$
+			
+			ldy 	#24
+SetSprtLoop$:			
+			lda		(zp:P_GRID_L$),y
+			bne		SkipHide$
+			pha
+			tya
+			pha
+			jsr		vdp_hide_sprite
+			pla
+			tay
+			pla
+			jmp		SkipSprite$
+SkipHide$:
+			pla
+			tay
+			pla
+			sta		zp:_Zp+0
+			dec		zp:_Zp+0
+			tya
+			pha
+			jsr		vdp_set_sprite_tile
+			pla
+			tay
+			pha
+			jsr		vdp_show_sprite
+			pla
+			tay
+SkipSprite$:
+			dey
+			bpl 	SetSprtLoop$
+			
 			rts
 
 vdp_draw_joystick:

src/vddlg_main.c

@@ -36,6 +36,7 @@ void main(void) {
 	num_to_decbuf(state_page->hi_score, 6, score_buf);
 	decbuf_to_ascii(6, score_buf);
 	
+	vdp_hide_sprites();
 	vdp_clear_dialog();
 	vdp_switch_nt(1); // Make sure VDP shows the correct dialog nametable
 	
@@ -48,17 +49,14 @@ void main(void) {
 	switch(dld->mode) {
 		case DLOG_MODE_WIN:
 			snd_festive();
-			//ddraw_endgame_box(1, dld->score, state_page->hi_score);
 			vdp_print_string(1, 11, 8, "YOU WIN!!!");
 			break;
 		case DLOG_MODE_LOSE:
 			snd_sad_scale();
-			//ddraw_endgame_box(-1, dld->score, state_page->hi_score);
 			vdp_print_string(1, 11, 8, "GAME OVER!");
 			break;
 		default:
 		case DLOG_MODE_START:
-			//ddraw_endgame_box(0, dld->score, state_page->hi_score);
 			vdp_print_string(1, 7, 8, "WELCOME TO TK2048!");
 			snd_start();
 			break;
@@ -71,7 +69,7 @@ void main(void) {
 		shared_page->master_command = MASTER_COMMAND_NONE;
 	}
 	
-	shared_page->next_module_idx = MODULE_GAME; // Go to the GAME module
+	shared_page->next_module_idx = MODULE_GAME_VDP; // Go to the GAME module
 	gad->mode = GAME_MODE_NORMAL; // Set the proper start mode for the game
 	
 	while(!read_any_key() && (wait_counter != WAIT_COUNTER_END)) {
@@ -80,7 +78,7 @@ void main(void) {
 	}
 
 	if (wait_counter == WAIT_COUNTER_END) {
-		shared_page->next_module_idx = MODULE_DEMO; // Actually go to the DEMO module
+		shared_page->next_module_idx = MODULE_DEMO_VDP; // Actually go to the DEMO module
 		return;
 	}
 

src/vdgam_main.c

@@ -54,6 +54,7 @@ void main(void) {
 	dlog_data *gad = (dlog_data *)(shared_page->module_data);
 
 	// Make sure the buffers are pointing to the correct memory and are clear
+	vdp_hide_sprites();
 	vdp_clear_gamegrid();
 	vdp_switch_nt(0); // Make sure VDP shows the gamegrid
 
@@ -90,7 +91,7 @@ void main(void) {
 	
 	vdp_draw_joystick(JS_POS_CENTER); // Center the joystick
 	
-	vdp_redraw_tiles();
+	vdp_redraw_tiles(get_front_grid());
 
 	__enable_interrupts();
 
@@ -167,7 +168,6 @@ void main(void) {
 			decbuf_to_ascii(6, text_buf);
 			__disable_interrupts();
 			vdp_print_string(0, SCORE_TEXT_X, SCORE_TEXT_Y, (char*)text_buf);
-			__enable_interrupts();
 			
 			break;
 		}
@@ -186,17 +186,18 @@ void main(void) {
 		decbuf_to_ascii(6, text_buf);
 		__disable_interrupts();
 		vdp_print_string(0, SCORE_TEXT_X, SCORE_TEXT_Y, (char*)text_buf);
-		vdp_redraw_tiles();
+		vdp_redraw_tiles(get_front_grid());
 		__enable_interrupts();
 	}
 	
 	dld->mode = (done > 0) ? DLOG_MODE_WIN : DLOG_MODE_LOSE;
 	dld->score = score;
 
+	vdp_redraw_tiles(get_front_grid());
+
+	WAIT(0xFF);
+
 	__disable_interrupts();
-	
-	// One last update to the tiles
-	vdp_redraw_tiles();
 
 	return; 
 }

src/vdp_utils.s

@@ -282,6 +282,7 @@ VdpFound$:
 ;;;
 ;;; Clobbers:
 ;;; - A, Y, X
+;;; - Zp 1, 2, 3, 4, 5, 6, 7 
 ;;;					
 vdp_hide_sprites:
 			ldy		#0
@@ -294,6 +295,9 @@ HideLoop$:
 			cpy		#25
 			bne		HideLoop$
 			
+			; Make sure the table gets updated in memory
+			jsr _vdp_write_interleaved_sat
+			
 			rts
 			
 ;;; vdp_hide_sprite: