replace texture jump table with dispatch table

src/init.asm

@@ -0,0 +1,70 @@
+;
+;   Jump table initialisation
+;
+; r1: sprite id
+; r2: pointer address
+; r3: pointer value
+
+; sprite_empty
+add r1, zr, sprites.empty
+lsl r2, r1, arch.instruction_increment_shift
+add r2, r2, ptr.textures_addresses
+add r3, zr, sprite_empty
+store_32 [r2], r3
+; sprite_unimplemented
+add r1, zr, sprites.unimplemented
+lsl r2, r1, arch.instruction_increment_shift
+add r2, r2, ptr.textures_addresses
+add r3, zr, sprite_unimplemented
+store_32 [r2], r3
+; sprite_wall_end
+add r1, zr, sprites.wall_end
+lsl r2, r1, arch.instruction_increment_shift
+add r2, r2, ptr.textures_addresses
+add r3, zr, sprite_wall_end
+store_32 [r2], r3
+; sprite_wall_straight
+add r1, zr, sprites.wall_straight
+lsl r2, r1, arch.instruction_increment_shift
+add r2, r2, ptr.textures_addresses
+add r3, zr, sprite_wall_straight
+store_32 [r2], r3
+; sprite_wall_corner
+add r1, zr, sprites.wall_corner
+lsl r2, r1, arch.instruction_increment_shift
+add r2, r2, ptr.textures_addresses
+add r3, zr, sprite_wall_corner
+store_32 [r2], r3
+; sprite_robot
+add r1, zr, sprites.robot
+lsl r2, r1, arch.instruction_increment_shift
+add r2, r2, ptr.textures_addresses
+add r3, zr, sprite_robot
+store_32 [r2], r3
+; sprite_ghost
+add r1, zr, sprites.ghost
+lsl r2, r1, arch.instruction_increment_shift
+add r2, r2, ptr.textures_addresses
+add r3, zr, sprite_ghost
+store_32 [r2], r3
+; sprite_coin
+add r1, zr, sprites.coin
+lsl r2, r1, arch.instruction_increment_shift
+add r2, r2, ptr.textures_addresses
+add r3, zr, sprite_coin
+store_32 [r2], r3
+
+;
+;   Screen initialization
+;
+
+; r1 = screen parameter value
+mov r1, screen.mode_index
+screen r1, screen.mode_value
+
+mov r1, screen.offset_index
+add r2, zr, ptr.screen
+screen r1, r2
+
+mov r1, screen.resolution_index
+screen r1, screen.resolution_value