mirror of
https://github.com/badvision/lawless-legends.git
synced 2024-07-04 09:29:28 +00:00
Removed extra lazy fetch stuff because it would complicate things down the line a lot (it can be added back to reduce/defer loads later if desired.) Started on the drawing routine, just trying to sort out all the geometry to feed in to the main loop.
This commit is contained in:
Brendan Robert
parent
50b64ab2a5
commit
7901dba5f3
@ -1,8 +1,7 @@
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;@com.wudsn.ide.asm.hardware=APPLE2
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; Tile routines
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; ------------------
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;
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;
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* = $6000
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; Global definitions
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!source "../include/global.i"
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@ -109,7 +108,7 @@ LOAD_SECTION
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; | `--- Requires special (rope, raft, etc)
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; `----- Script assigned, triggers script lookup
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;----------------------------------------------------------------------
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; >> SET X,Y COORDINATES
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; >> SET X,Y COORDINATES FOR VIEWPORT CENTER
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SET_XY
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STX REL_X
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STY REL_Y
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@ -140,24 +139,11 @@ CROSS_NORTH
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!move_word NW_MAP_LOC, SW_MAP_LOC
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!move_byte NE_MAP_ID, SE_MAP_ID
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!move_word NE_MAP_LOC, SE_MAP_LOC
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LDA REL_X
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CMP SECTION_WIDTH+VIEWPORT_HORIZ_PAD
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BGE .1
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; Get new NW section
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LDA (SW_MAP_LOC)
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STA NW_MAP_ID
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!loadSection NW_MAP_LOC
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LDA REL_X
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CMP SECTION_WIDTH-VIEWPORT_HORIZ_PAD
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BGE .2
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; Skip the NE quadrant if not visible
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LDA #$FF
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STA NE_MAP_ID
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RTS
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; Skip the NW quadrant if not visible
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.1 LDA #$FF
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STA NW_MAP_ID
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.2 ; Get the new NE section
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; Get the new NE section
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LDA (SE_MAP_LOC)
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STA NE_MAP_ID
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!loadSection NE_MAP_LOC
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@ -176,25 +162,12 @@ CROSS_EAST
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!move_word NE_MAP_LOC, NW_MAP_LOC
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!move_byte SE_MAP_ID, SW_MAP_ID
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!move_word SE_MAP_LOC, SW_MAP_LOC
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LDA REL_Y
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CMP SECTION_HEIGHT+VIEWPORT_VERT_PAD
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BGE .1
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; Get new NE section
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LDY #EAST
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LDA (NW_MAP_LOC),Y
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STA NE_MAP_ID
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!loadSection NE_MAP_LOC
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LDA REL_Y
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CMP SECTION_HEIGHT-VIEWPORT_VERT_PAD
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BGE .2
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; Skip the SE quadrant if not visible
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LDA #$FF
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STA SE_MAP_ID
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RTS
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; Skip the NE quadrant if not visible
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.1 LDA #$FF
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STA NE_MAP_ID
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.2 ; Get the new SE section
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; Get the new SE section
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LDY #EAST
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LDA (SW_MAP_LOC),Y
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STA SE_MAP_ID
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@ -214,25 +187,12 @@ CROSS_SOUTH
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!move_word SW_MAP_LOC, NW_MAP_LOC
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!move_byte SE_MAP_ID, NE_MAP_ID
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!move_word SE_MAP_LOC, NE_MAP_LOC
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LDA REL_X
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CMP SECTION_WIDTH+VIEWPORT_HORIZ_PAD
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BGE .1
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; Get new SW section
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LDY #SOUTH
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LDA (NW_MAP_LOC),Y
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STA SW_MAP_ID
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!loadSection SW_MAP_LOC
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LDA REL_X
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CMP SECTION_WIDTH-VIEWPORT_HORIZ_PAD
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BGE .2
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; Skip the NE quadrant if not visible
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LDA #$FF
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STA SE_MAP_ID
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RTS
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; Skip the NW quadrant if not visible
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.1 LDA #$FF
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STA SW_MAP_ID
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.2 ; Get the new SE section
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; Get the new SE section
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LDY #SOUTH
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LDA (SE_MAP_LOC),Y
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STA SE_MAP_ID
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@ -252,25 +212,12 @@ CROSS_WEST
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!move_word NW_MAP_LOC, NE_MAP_LOC
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!move_byte SW_MAP_ID, SE_MAP_ID
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!move_word SW_MAP_LOC, SE_MAP_LOC
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LDA REL_Y
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CMP SECTION_HEIGHT+VIEWPORT_VERT_PAD
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BGE .1
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; Get new NW section
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LDY #WEST
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LDA (NE_MAP_LOC),Y
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STA NW_MAP_ID
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!loadSection NW_MAP_LOC
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LDA REL_Y
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CMP SECTION_HEIGHT-VIEWPORT_VERT_PAD
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BGE .2
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; Skip the SW quadrant if not visible
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LDA #$FF
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STA SW_MAP_ID
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RTS
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; Skip the NE quadrant if not visible
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.1 LDA #$FF
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STA NW_MAP_ID
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.2 ; Get the new SE section
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; Get the new SE section
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LDY #WEST
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LDA (SE_MAP_LOC),Y
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STA SW_MAP_ID
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@ -283,17 +230,57 @@ CROSS_WEST
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;----------------------------------------------------------------------
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; >> DRAW
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!zone draw
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!macro drawMapSection ptr, deltaX, deltaY {
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; Determine X1 and X2 bounds for what is being drawn
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LDA REL_X
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SEC
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SBC #(deltaX+VIEWPORT_HORIZ_PAD)
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TAX
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BPL .10
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;This section isn't at the edge, note that
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EOR #$FF
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ADC #$00 ; Carry is still set, so this is really +1
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BPL .11 ; Should be always true
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.10 LDA #0
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.11 STA X1
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TXA
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CLC
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ADC VIEWPORT_WIDTH
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CMP SECTION_WIDTH
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BLT .12
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LDA #SECTION_WIDTH-1
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.12 STA X2
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}
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; Determine Y1 and Y2 bounds for what is being drawn
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}
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DRAW
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; For each quadrant, display relevant parts of screen
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.checkNorthQuads
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LDA REL_Y
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CMP SECTION_HEIGHT+VIEWPORT_VERT_PAD
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BGE .checkSouthQuads
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LDA REL_Y
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CMP SECTION_HEIGHT+VIEWPORT_VERT_PAD
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BGE .checkSouthQuads
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; Check for NW quadrant area
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LDA REL_X
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CMP SECTION_WIDTH+VIEWPORT_HORIZ_PAD
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BGE .checkNEQuad
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!drawMapSection NW_MAP_LOC, 0, 0
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LDA NW_MAP_LOC+1
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BNE .drawNW
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.drawNW
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; Check for NE quadrant area
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.checkNEQuad
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.checkSouthQuads
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; Check for SW quadrant area
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LDA REL_X
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CMP SECTION_WIDTH+VIEWPORT_HORIZ_PAD
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BGE .checkSEQuad
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; Check for SE quadrand area
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.checkSEQuad
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RTS
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.mainDraw
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; Identify start of map data (upper left)
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