create repository with functional basic implementation

src/consts/colors.asm

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+pub const colors.black =  0b000_000_00
+pub const colors.blue =   0b000_000_11
+pub const colors.green =  0b000_111_00
+pub const colors.gray =   0b010_011_10
+pub const colors.red =    0b111_000_00
+pub const colors.pink =   0b111_000_11
+pub const colors.orange = 0b111_100_00
+pub const colors.yellow = 0b111_110_00
+pub const colors.white =  0b111_111_11

src/consts/game.asm

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+pub const game.direction_up = 0
+pub const game.direction_right = 1
+pub const game.direction_down = 2
+pub const game.direction_left = 3
+pub const game.direction_still = 4
+
+; 1_000_000_000 nano second = 0x0000_0000_3B9A_CA00
+; pub const game.tick_duration_0 = 0xCA00
+; pub const game.tick_duration_1 = 0x3B9A
+; pub const game.tick_duration_2 = 0x0000
+; pub const game.tick_duration_3 = 0x0000
+
+; 0.5 second = 500_000_000 nano second = 0x0000_0000_1DCD_6500
+pub const game.tick_duration_0 = 0x6500
+pub const game.tick_duration_1 = 0x1DCD
+pub const game.tick_duration_2 = 0x0000
+pub const game.tick_duration_3 = 0x0000

src/consts/keyboard.asm

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+pub const keyboard.mask_key = 0x00FF
+pub const keyboard.mask_event = 0x0100
+
+pub const keyboard.event_released = 0x0000
+pub const keyboard.event_pressed = 0x0100
+
+pub const keyboard.key_min = 1
+pub const keyboard.key_up = 1
+pub const keyboard.key_right = 2
+pub const keyboard.key_down = 3
+pub const keyboard.key_left = 4
+pub const keyboard.key_max = 4

src/consts/map.asm

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+; map size 16x12 (or 15x11 with margins)
+pub const map.width = 15
+pub const map.height = 11
+pub const map.size = 165 ; 11*15
+pub const map.max_x = 14
+pub const map.max_y = 10
+
+pub const map.tiles.empty = 0
+pub const map.tiles.wall = 1
+pub const map.tiles.coin = 2

src/consts/offsets.asm

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+;const free_ram_start = 8000
+
+pub const offsets.screen = 8000 ; screen size: 80x60 = 4800
+
+pub const offsets.tick_duration_high = 12800
+pub const offsets.tick_duration_low = 12804
+pub const offsets.next_tick_high = 12808
+pub const offsets.next_tick_low = 128012
+
+
+; State:
+; U8 x coord
+; U8 y coord
+; U8 direction
+pub const offsets.state_robot = 12816
+pub const offsets.state_ghost = 12819

src/consts/scene.asm

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+; given:
+; - 16x12 tiles map
+; - 5x5   pixels tile
+
+pub const scene.margin_top = 2
+pub const scene.margin_bottom = 3
+pub const scene.margin_left = 2
+pub const scene.margin_right = 3

src/consts/screen.asm

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+; Screen pixel mode (settings #0)
+; 0: ASCII  8
+; 1: ASCII 24
+; 2: Pixel  8
+; 3: Pixel 24
+
+; While in mode #2 (Pixel 8)
+  ; Screen memory offset (settings #1)
+  ; Screen resolutions (settings #2)
+    ; 0. 80x60
+    ; 1. 160x120
+    ; 2. 256x192
+    ; 3. 320x240
+    ; 4. 640x480
+    ; 5. 800x600
+    ; 6. 920x720
+    ; 7. 1024x768
+
+pub const screen.mode_index = 0
+pub const screen.mode_value = 2
+pub const screen.offset_index = 1
+pub const screen.resolution_index = 2
+pub const screen.resolution_value = 0
+
+pub const screen.width = 80
+pub const screen.height = 60

src/consts/sprites.asm

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+pub const sprites.width = 5
+pub const sprites.height = 5 ; unused as sprite are all square
+pub const sprites.size = 25 ; height x width
+
+pub const sprites.rotation_0 = 0
+pub const sprites.rotation_90 = 1
+pub const sprites.rotation_180 = 2
+pub const sprites.rotation_270 = 3
+
+pub const sprites.empty = 0
+pub const sprites.unimplemented = 1
+pub const sprites.wall_end = 2
+pub const sprites.wall_straight = 3
+pub const sprites.wall_corner = 4
+pub const sprites.robot = 5
+pub const sprites.ghost = 6
+pub const sprites.coin = 7
+pub const sprites.max = 7 ; for lookup table