pc thing

1 files changed, 285 insertions, 0 deletions

diff --git a/code/glumbo-buff.a b/code/glumbo-buff.a
new file mode 100644
index 0000000..8964ef3
--- /dev/null
+++ b/code/glumbo-buff.a
@@ -0,0 +1,285 @@
+; GLUMBO - the 2d game thing
+
+.macro store(reg, val, addr) \
+    put @reg @val\
+    str @reg @addr
+.macro storer(reg, val, addr) \
+    put @reg @val\
+    srr @reg @addr
+.macro inc(addr) \
+    ld a @addr\
+    put b 1\
+    add\
+    str c @addr
+
+jmp start
+get_coord:
+    ld a tmp2              ; Y(0-4) -> a
+    mov b width            ; width (5) -> b
+    mul                    ; Y(0-4) * width (5)
+
+    mov a grid_start       ; grid start address -> a
+    swp c b                ; (offset from y) -> b
+    add                    ; offsetY + gridStart
+    swp c a                ; -> a
+    ld b tmp1              ; X(0-4) -> b
+    add                    ; loc + X
+
+    str c tmp3             ; location -> tmp3
+    ret
+
+start:
+    .label width 20
+    .label height 10
+
+    .label grid_start 512
+    ; temp vars
+    .label tmp1 0
+    .label tmp2 1
+    .label tmp3 2
+    .label tmp4 3
+    .label tmp5 4
+
+    .label px 16
+    .label py 17
+    .label inp 128
+    .label rowBuff 256
+    store a 2 px
+    store a 2 py
+
+    store a 0 tmp1 ; x
+    store a 0 tmp2 ; y
+    mov a 2
+    mov b 1
+    sys
+    grid_loop:
+        ;get coord
+            jmr get_coord
+        ;store tile
+            ; storer a 46 c
+        ;main loop stuff
+        ; place tile
+            ; get X % (width - 1) to check if on x edge
+                store a 46 tmp4
+                mov a width         ; width -> A
+                mov b 1             ; 1 -> b
+                sub                 ; c = width - 1
+                swp c b             ; -> b
+                ld a tmp1           ; x -> a
+                mod                 ; c = x % (w - 1)
+                mov a 0             ;
+                crr c c a           ; c = c == 0?
+                str c tmp5          ; c -> tmp5
+
+            ; Y % (height - 1 )
+                mov a height        ; height -> A
+                mov b 1             ; 1 -> b
+                sub                 ; c = height - 1
+                swp c b             ; -> b
+                ld a tmp2           ; x -> a
+                mod                 ; c = x % (w - 1)
+                mov a 0
+                crr a c a           ; a = c == 0?
+
+            ld b tmp5
+            or
+            cmp c 1
+
+            jz do_the_store     ; edge ? continue : jmp do_the_store
+            store a 35 tmp4     ; store 35 at tmp4
+            do_the_store:
+                ld b tmp3       ; location -> b
+                ld a tmp4       ; tmp4 (character) -> a
+                srr a b         ; store the tile
+        ;;;;;;;;;;;;;;;;;;;;;;;;;
+        mov a width             ; width -> a
+        mov b 1                 ; 1 -> b
+        sub                     ; c = width - 1
+        ld a tmp1               ; X(0-4) -> a
+        cmr a c                 ; X(0-4) == width
+        jnz ifz                 ; go to ifz if X(0-4) == width (5)
+        ifnz:                   ; X is not 0
+            ld a tmp1           ; X -> a
+            mov b 1             ; 1 -> b
+            add                 ; X + 1
+            str c tmp1          ; X = X + 1
+            jmp continue_loop   ; continue
+        ifz:                    ; X is 0
+            store a 0 tmp1      ; set X to 1
+            ld a tmp2           ; Y(0-4) -> a
+            mov b 1             ; 1 -> b
+            add                 ; c = Y + 1
+            str c tmp2          ; Y = c
+            jmp continue_loop   ; continue
+        continue_loop:
+            mov a height
+            mov b 0
+            sub
+            ld a tmp2           ; get Y (0-4)
+            cmr a c             ; Y == height+1 ?
+            jz grid_loop        ; if not, continue
+    ; escaped
+    main_loop:
+        jmr print
+        ; get input
+            mov a 0
+            mov b 0
+            mov c inp
+            sys
+            jmr parse_input
+        jmp main_loop
+
+parse_input:
+    .macro case(addr, val, ln) \
+        ld a @addr\
+        cmp a @val\
+        jnz @ln
+    .macro break() jmp default
+
+    case inp 119 case_w
+    case inp 115 case_s
+    case inp 97 case_a
+    case inp 100 case_d
+
+    case inp 99 case_c
+    case inp 3 case_c
+    break
+
+    case_w:
+        ld a py
+        cmp a 0
+        jnz default
+        mov b 1
+        sub
+        str c py
+        break
+    
+    case_s:
+        ; width-1
+            mov a height
+            mov b 1
+            sub
+
+        ld a py
+        cmr a c
+        jnz default
+        mov b 1
+        add
+        str c py
+        break
+    
+    case_a:
+        ld a px
+        cmp a 0
+        jnz default
+        mov b 1
+        sub
+        str c px
+        break
+    
+    case_d:
+        ; width-1
+            mov a width
+            mov b 1
+            sub
+
+        ld a px
+        cmr a c
+        jnz default
+        mov b 1
+        add
+        str c px
+        break
+    
+    case_c:
+        end
+        break
+
+    default:
+        ret
+
+print:
+    .label tmp6 5
+    mov a 1
+    mov b 1
+    mov c [clear]
+    sys
+    store a 0 tmp1 ; x
+    store a 0 tmp2 ; y
+    store a 0 tmp6 ; rowBuff index
+    print_loop:
+        ;get coord
+            jmr get_coord
+        ; get tile
+            ld a tmp1 ; x
+            ld b px   ; player x
+            crr c a b
+            str c tmp4
+            ld a tmp2 ; y
+            ld b py   ; player y
+            crr b a b
+            ld a tmp4
+            and
+            cmp c 1
+            
+            ld a tmp6 ; buff pointer
+            mov b rowBuff ; + buff loc
+            add ;
+            ld a tmp3 ; tile pointer?
+            ldr b a ; load tile into b
+
+            jz set_normal
+                mov b 64
+            set_normal:
+            srr b c ; store b to c
+            ; store a 0 129
+        ;loop
+            mov a width
+            mov b 1
+            sub
+            ld a tmp1              ; X(0-4) -> a
+            cmr a c                ; X(0-4) == width
+            jnz p_ifz              ; go to ifz if X(0-4) == width
+            p_ifnz:                ; X is not 0
+                ld a tmp1          ; X -> a
+                mov b 1            ; 1 -> b
+                add                ; X + 1
+                str c tmp1         ; X = X + 1
+                inc tmp6
+                jmp continue_ploop ; continue
+            p_ifz:                 ; X is 0
+                store a 0 tmp6
+                store a 10 128
+                store a 0 129
+                mov a 1
+                mov b 1
+                mov c 128
+                sys
+                store a 0 tmp1     ; set X to 1
+                ld a tmp2          ; Y(0-4) -> a
+                mov b 1            ; 1 -> b
+                add                ; c = Y + 1
+                str c tmp2         ; Y = c
+                ; print
+                    ; print
+                    mov a 1
+                    mov b 1
+                    mov c rowBuff
+                    sys
+                    ; ld c 128
+                    ; dbg a
+                jmp continue_ploop ; continue
+            continue_ploop:
+                mov a height
+                mov b 0
+                sub
+                ld a tmp2          ; get Y (0-4)
+                cmr a c            ; Y == width+1 ?
+                jz print_loop      ; if not, continue
+    ret
+clear:
+.hex 1b
+.str "[2J"
+.hex 1b
+.str "[0;0H"
+.hex 0
\ No newline at end of file