Integrating mouse support

src/constants.h

@@ -42,6 +42,7 @@
 #define TILE_EMPTY_CURSOR   0x02
 #define TILE_BLACK          0x03
 #define TILE_WHITE          0x04
+#define TILE_MOUSE_CURSOR   0x0F
 #define TILE_BLACK_CURSOR   0x13
 #define TILE_WHITE_CURSOR   0x14
 

src/game.c

@@ -390,7 +390,6 @@ void computer_turn() {
     uint8_t bestx[100];
     uint8_t bestvalue = 0;
     uint8_t i=0, j=0, k=0;
-    unsigned char keycode = 0;
     clock_t start, next;
 
     // keep track of time
@@ -476,6 +475,10 @@ void human_turn() {
     unsigned char joystat1 = 0xFF;
     unsigned char joystat2 = 0xFF;
     unsigned char joyconn = 0xFF;
+    static uint8_t mouse_buttons = 0x00;
+    uint16_t *mouse_x = (uint16_t *)0x2;
+    uint16_t *mouse_y = (uint16_t *)0x4;
+    int8_t ccurx, ccury;
 
     // first check whether the human can actually perform a valid move
     // if not, we have to swap the turn again (and display an error message)
@@ -552,6 +555,29 @@ void human_turn() {
             return;
         }
     }
+
+    // read mouse
+    asm("ldx #2");
+    asm("jsr $FF6B");
+    asm("sta %v", mouse_buttons);
+
+    // determine tile position based based on cursor position
+    ccurx = (*mouse_x >> 4) - board_offset_x;
+    ccury = (*mouse_y >> 4) - board_offset_y;
+    if(ccurx >= 0 && ccurx < boardsize && ccury >=0 && ccury < boardsize) {
+        set_cursor(ccury, ccurx);
+    }
+
+    if(mouse_buttons & 1) {
+        // wait until mouse button is released
+        while(mouse_buttons != 0x00) {
+            asm("ldx #2");
+            asm("jsr $FF6B");
+            asm("sta %v", mouse_buttons);
+        }
+        // place stone in current mouse location
+        place_stone(cury, curx, PROBE_NO, current_player);
+    }
 }
 
 /**

src/game.h

@@ -31,6 +31,7 @@
 #include "constants.h"
 #include "video.h"
 #include "sound.h"
+#include "mouse.h"
 
 extern uint8_t *board;              // store board configuration
 extern uint8_t *edgefield;          // which board positions are 'active'

src/main.c

@@ -41,6 +41,7 @@ void main() {
 
     // enable mouse
     init_mouse();
+    set_mouse_pointer(TILE_MOUSE_CURSOR);
 
     while(1) {
         while(gamestate == GAME_MENU) {

src/menu.c

@@ -28,7 +28,6 @@ void game_menu() {
     static unsigned char keycode;
     unsigned short *mouse_x = (unsigned short *)0x2;
     unsigned short *mouse_y = (unsigned short *)0x4;
-    static unsigned char mouse_buttons;
 
     write_string("CX16-OTHELLO", 0, 1);
     write_string("music by Crisps", 1, 5);
@@ -115,9 +114,6 @@ void game_menu() {
             return;
         }
 
-        // asm("jsr $FF6B");
-        // asm("sta %v", mouse_buttons);
-
         // update sound buffer
         sound_fill_buffers();
         update_background_diagonal();

src/mouse.s

@@ -24,9 +24,9 @@
 
 .code
 .proc _init_mouse: near
-    sec
-    jsr X16::Kernal::SCREEN_MODE
     lda #1
+    ldx #40
+    ldy #30
     jsr X16::Kernal::MOUSE_CONFIG
     rts
 .endproc

src/video.c

@@ -361,16 +361,40 @@ void set_sprite(uint8_t sprite_id, uint8_t posy, uint8_t posx) {
  * 
  */
 void reset_sprites() {
-    uint8_t i,j;
+    uint8_t i;
     unsigned long sprite_addr = 0x1FC00;
 
     VERA.address = sprite_addr;
     VERA.address_hi = sprite_addr >> 16;
     VERA.address_hi |= 0b10000;
 
-    for(i=1; i<128; i++) {
-        for(j=0; j<8; j++) {
-            VERA.data0 = 0x00;
-        }
+    for(i=0; i<128; i++) {
+        VERA.data0 = 0x00;
+        VERA.data0 = 0x00;
+        VERA.data0 = 16;
+        VERA.data0 = 0x00;
+        VERA.data0 = 16;
+        VERA.data0 = 0x00;
+        VERA.data0 = 0b00001100;
+        VERA.data0 = 0b01010000;
     }
+
+    set_mouse_pointer(TILE_MOUSE_CURSOR);
+}
+
+/**
+ * @brief Set the mouse pointer
+ * 
+ * @param tile_id   which tile to use
+ */
+void set_mouse_pointer(uint8_t tile_id) {
+    unsigned long sprite_addr = 0x1FC00;
+    uint32_t graph_addr = TILEBASE + (tile_id << 8);
+
+    VERA.address = sprite_addr;
+    VERA.address_hi = sprite_addr >> 16;
+    VERA.address_hi |= 0b10000;
+
+    VERA.data0 = graph_addr >> 5;
+    VERA.data0 = (graph_addr >> 13) | (1 << 7);
 }

src/video.h

@@ -144,4 +144,11 @@ void set_sprite(uint8_t sprite_id, uint8_t posy, uint8_t posx);
  */
 void reset_sprites();
 
+/**
+ * @brief Set the mouse pointer
+ * 
+ * @param tile_id   which tile to use
+ */
+void set_mouse_pointer(uint8_t tile_id);
+
 #endif // _VIDEO_H