Apple-2gs-SW/iigs-sprite-compiler
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Add a 16-bit word operation and unit test

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This commit is contained in:
Lucas Scharenbroich
2016-11-30 00:43:54 -06:00
parent ff48fefcd4
commit de3754e91e
3 changed files with 88 additions and 11 deletions
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SpriteCompiler/Problem/SpriteGeneratorSearchProblem.cs
+35 -2
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@@ -242,6 +242,34 @@ namespace SpriteCompiler.Problem
actions.Add(new SHORT_M());
// Add any possible 16-bit data manipulations
if (state.S.IsScreenOffset)
{
var addr = state.S.Value;
// Look for consecutive bytes
var local = state.Bytes.Where(WithinRangeOf(addr, 257)).ToList(); // 16-bit value can extend to the 256th byte
var words = local
.Skip(1)
.Select((x, i) => new { High = x, Low = local[i] })
.Where(p => p.Low.Offset == (p.High.Offset - 1))
.ToList();
foreach (var word in words)
{
var offset = (byte)(word.Low.Offset - addr);
var data = (ushort)(word.Low.Data + (word.High.Data << 8));
actions.Add(new STACK_REL_16_BIT_IMMEDIATE_STORE(data, offset));
}
// We can LDA #$XXXX / STA X,s for any values within 256 bytes of the current address
foreach (var datum in state.Bytes.Where(WithinRangeOf(addr, 256)))
{
var offset = (byte)(datum.Offset - addr);
actions.Add(new STACK_REL_8_BIT_IMMEDIATE_STORE(datum.Data, offset));
}
}
}
else
{
@@ -252,8 +280,8 @@ namespace SpriteCompiler.Problem
{
var addr = state.S.Value;
// We can LDA #$XX / STA X,s for any values within 256 bytes of the curren address
foreach (var datum in state.Bytes.Where(x => (x.Offset - addr) < 255))
// We can LDA #$XX / STA X,s for any values within 256 bytes of the current address
foreach (var datum in state.Bytes.Where(WithinRangeOf(addr, 256)))
{
var offset = datum.Offset - addr;
actions.Add(new STACK_REL_8_BIT_IMMEDIATE_STORE(datum.Data, (byte)offset));
@@ -264,6 +292,11 @@ namespace SpriteCompiler.Problem
// Run through the actions to create a dictionary
return actions.ToDictionary(x => x, x => x.Apply(state));
}
private Func<SpriteByte, bool> WithinRangeOf(int addr, int range)
{
return x => (x.Offset >= addr) && ((x.Offset - addr) < range);
}
}
public class SpriteGeneratorHeuristicFunction : IHeuristicFunction<SpriteGeneratorState, IntegerPathCost>