| 1 | {$INCLUDE Switches.inc}
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| 2 | unit AI;
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| 3 |
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| 4 | interface
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| 5 |
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| 6 | uses
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| 7 | {$IFDEF DEBUG}SysUtils,{$ENDIF} // necessary for debug exceptions
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| 8 | Protocol, CustomAI, ToolAI;
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| 9 |
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| 10 | type
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| 11 | UnitRole = (Roam, Defend);
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| 12 |
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| 13 | TAI = class(TToolAI)
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| 14 | constructor Create(Nation: integer); override;
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| 15 |
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| 16 | protected
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| 17 | procedure DoTurn; override;
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| 18 | procedure DoNegotiation; override;
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| 19 | function ChooseResearchAdvance: integer; override;
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| 20 | function ChooseGovernment: integer; override;
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| 21 | function WantNegotiation(Nation: integer; NegoTime: TNegoTime): boolean; override;
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| 22 |
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| 23 | procedure ProcessSettlers;
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| 24 | procedure ProcessUnit(uix: integer; Role: UnitRole);
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| 25 | procedure SetCityProduction;
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| 26 | end;
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| 27 |
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| 28 |
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| 29 | implementation
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| 30 |
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| 31 | uses
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| 32 | Pile;
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| 33 |
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| 34 | const
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| 35 | // fine adjustment
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| 36 | Aggressive = 40; // 0 = never attacks, 100 = attacks even with heavy losses
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| 37 | DestroyBonus = 30; // percent of building cost
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| 38 |
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| 39 |
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| 40 | constructor TAI.Create(Nation: integer);
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| 41 | begin
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| 42 | inherited;
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| 43 | end;
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| 44 |
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| 45 |
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| 46 | //-------------------------------
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| 47 | // MY TURN
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| 48 | //-------------------------------
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| 49 |
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| 50 | procedure TAI.DoTurn;
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| 51 | var
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| 52 | uix: integer;
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| 53 | begin
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| 54 | // correct tax rate if necessary
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| 55 | if RO.Money > RO.nCity * 16 then
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| 56 | ChangeRates(RO.TaxRate - 10, 0)
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| 57 | else if RO.Money < RO.nCity * 8 then
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| 58 | ChangeRates(RO.TaxRate + 10, 0);
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| 59 |
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| 60 | // better government form available?
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| 61 | if RO.Government <> gAnarchy then
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| 62 | if IsResearched(adTheRepublic) then
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| 63 | begin
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| 64 | if RO.Government <> gRepublic then
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| 65 | Revolution;
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| 66 | end
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| 67 | else if IsResearched(adMonarchy) then
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| 68 | begin
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| 69 | if RO.Government <> gMonarchy then
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| 70 | Revolution;
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| 71 | end;
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| 72 |
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| 73 | // do combat
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| 74 | for uix := 0 to RO.nUn - 1 do
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| 75 | if (MyUnit[uix].Loc >= 0) and not (MyModel[MyUnit[uix].mix].Kind in
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| 76 | [mkSettler, mkSlaves]) then
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| 77 | ProcessUnit(uix, Roam);
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| 78 |
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| 79 | ProcessSettlers;
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| 80 |
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| 81 | // do discover/patrol
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| 82 |
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| 83 | OptimizeCityTiles;
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| 84 | SetCityProduction;
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| 85 | end;
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| 86 |
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| 87 |
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| 88 | // ProcessSettlers: move settlers, do terrain improvement, found cities
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| 89 | procedure TAI.ProcessSettlers;
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| 90 | var
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| 91 | uix, cix, ecix, Loc, RadiusLoc, TestScore, BestNearCityScore, TerrType, Special, V21: integer;
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| 92 | Radius: TVicinity21Loc;
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| 93 | ResourceScore, CityScore: array[0..lxmax * lymax - 1] of integer;
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| 94 |
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| 95 | procedure ReserveCityRadius(Loc: integer);
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| 96 | var
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| 97 | V21, RadiusLoc: integer;
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| 98 | Radius: TVicinity21Loc;
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| 99 | begin
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| 100 | V21_to_Loc(Loc, Radius);
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| 101 | for V21 := 1 to 26 do
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| 102 | begin
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| 103 | RadiusLoc := Radius[V21];
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| 104 | if (RadiusLoc >= 0) and (RadiusLoc < MapSize) then
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| 105 | ResourceScore[RadiusLoc] := 0;
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| 106 | end;
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| 107 | end;
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| 108 |
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| 109 | begin
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| 110 | JobAssignment_Initialize;
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| 111 |
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| 112 | // rate resources of all tiles
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| 113 | fillchar(ResourceScore, MapSize * sizeof(integer), 0);
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| 114 | for Loc := 0 to MapSize - 1 do
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| 115 | if (Map[Loc] and fRare) = 0 then
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| 116 | if (Map[Loc] and fTerrain) = fGrass then
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| 117 | if (Map[Loc] and fSpecial) <> 0 then
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| 118 | ResourceScore[Loc] := 3 // plains, 3 points
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| 119 | else
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| 120 | ResourceScore[Loc] := 2 // grassland, 2 points
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| 121 | else if (Map[Loc] and fSpecial) <> 0 then
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| 122 | ResourceScore[Loc] := 4; // special resource, 4 points
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| 123 | for cix := 0 to RO.nCity - 1 do
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| 124 | if MyCity[cix].Loc >= 0 then
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| 125 | ReserveCityRadius(MyCity[cix].Loc); // these resources already have a city
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| 126 | for uix := 0 to RO.nUn - 1 do
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| 127 | if (MyUnit[uix].Loc >= 0) and (MyUnit[uix].Job = jCity) then
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| 128 | ReserveCityRadius(MyUnit[uix].Loc); // these resources almost already have a city
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| 129 | for ecix := 0 to RO.nEnemyCity - 1 do
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| 130 | if RO.EnemyCity[ecix].Loc >= 0 then
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| 131 | ReserveCityRadius(RO.EnemyCity[ecix].Loc);
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| 132 | // these resources already have an enemy city
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| 133 |
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| 134 | // rate possible new cities
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| 135 | fillchar(CityScore, MapSize * sizeof(integer), 0);
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| 136 | for Loc := 0 to MapSize - 1 do
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| 137 | if ((Map[Loc] and fTerrain) = fGrass) and ((Map[Loc] and fRare) = 0) and
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| 138 | ((RO.Territory[Loc] < 0) or (RO.Territory[Loc] = me)) then
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| 139 | // don't consider founding cities in foreign nation territory
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| 140 | begin
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| 141 | TestScore := 0;
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| 142 | BestNearCityScore := 0;
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| 143 | V21_to_Loc(Loc, Radius);
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| 144 | for V21 := 1 to 26 do
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| 145 | begin // sum resource scores in potential city radius
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| 146 | RadiusLoc := Radius[V21];
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| 147 | if (RadiusLoc >= 0) and (RadiusLoc < MapSize) then
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| 148 | begin
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| 149 | TestScore := TestScore + ResourceScore[RadiusLoc];
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| 150 | if CityScore[RadiusLoc] > BestNearCityScore then
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| 151 | BestNearCityScore := CityScore[RadiusLoc];
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| 152 | end;
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| 153 | end;
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| 154 | if TestScore >= 10 then // city is worth founding
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| 155 | begin
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| 156 | TestScore := TestScore shl 8 + ((loc xor me) * 4567) mod 251;
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| 157 | // some unexactness, random but always the same for this tile
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| 158 | if TestScore > BestNearCityScore then
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| 159 | begin // better than all other sites in radius
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| 160 | if BestNearCityScore > 0 then // found no other cities in radius
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| 161 | begin
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| 162 | for V21 := 1 to 26 do
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| 163 | begin
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| 164 | RadiusLoc := Radius[V21];
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| 165 | if (RadiusLoc >= 0) and (RadiusLoc < MapSize) then
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| 166 | CityScore[RadiusLoc] := 0;
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| 167 | end;
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| 168 | end;
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| 169 | CityScore[Loc] := TestScore;
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| 170 | end;
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| 171 | end;
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| 172 | end;
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| 173 | for Loc := 0 to MapSize - 1 do
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| 174 | if CityScore[Loc] > 0 then
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| 175 | JobAssignment_AddJob(Loc, jCity, 10);
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| 176 |
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| 177 | // improve terrain
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| 178 | for cix := 0 to RO.nCity - 1 do
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| 179 | with MyCity[cix] do
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| 180 | if Loc >= 0 then
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| 181 | begin
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| 182 | V21_to_Loc(Loc, Radius);
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| 183 | for V21 := 1 to 26 do
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| 184 | if (Tiles and (1 shl V21) and not (1 shl CityOwnTile)) <> 0 then
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| 185 | begin // tile is exploited, but not the city own tile -- check if improvable
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| 186 | RadiusLoc := Radius[V21];
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| 187 | Assert((RadiusLoc >= 0) and (RadiusLoc < MapSize));
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| 188 | if (RadiusLoc >= 0) and (RadiusLoc < MapSize) then
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| 189 | begin
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| 190 | TerrType := Map[RadiusLoc] and fTerrain;
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| 191 | Special := Map[RadiusLoc] shr 5 and 3;
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| 192 | if TerrType >= fGrass then // can't improve water tiles
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| 193 | if (Terrain[TerrType].IrrEff > 0) // terrain is irrigatable
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| 194 | and not ((RO.Government = gDespotism) and
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| 195 | (Terrain[TerrType].FoodRes[Special] >= 3))
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| 196 | // improvement makes no sense when limit is depotism
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| 197 | and ((Map[RadiusLoc] and fTerImp) = 0) then // no terrain improvement yet
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| 198 | JobAssignment_AddJob(RadiusLoc, jIrr, 50) // irrigate!
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| 199 | else if (Terrain[TerrType].MoveCost = 1) // plain terrain
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| 200 | and ((Map[RadiusLoc] and (fRoad or fRR or fRiver)) = 0) then
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| 201 | // no road or railroad yet, no river
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| 202 | JobAssignment_AddJob(RadiusLoc, jRoad, 40);
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| 203 | // build road (The Wheel trade benefit)
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| 204 | end;
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| 205 | end;
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| 206 | end;
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| 207 |
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| 208 | // choose all settlers to work
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| 209 | for uix := 0 to RO.nUn - 1 do
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| 210 | if (MyUnit[uix].Loc >= 0) and (MyModel[MyUnit[uix].mix].Kind in
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| 211 | [mkSettler, mkSlaves]) then
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| 212 | JobAssignment_AddUnit(uix);
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| 213 |
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| 214 | JobAssignment_Go;
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| 215 | end; // ProcessSettlers
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| 216 |
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| 217 |
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| 218 | // ProcessUnit: execute attack, capture, discover or patrol task according to unit role
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| 219 | procedure TAI.ProcessUnit(uix: integer; Role: UnitRole);
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| 220 | const
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| 221 | DistanceScore = 4;
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| 222 | var
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| 223 | BestScore, BestCount, BestLoc, TerrType, TestLoc, NextLoc, TestDistance,
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| 224 | Tile, V8, TestScore, euix, MyDamage, EnemyDamage, TerrOwner, StepSize, OldLoc,
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| 225 | AttackForecast, MoveResult, AttackResult: integer;
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| 226 | Exhausted: boolean;
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| 227 | TestTask, BestTask: (utNone, utAttack, utCapture, utDiscover, utPatrol, utGoHome);
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| 228 | Adjacent: TVicinity8Loc;
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| 229 | AdjacentUnknown: array[0..lxmax * lymax - 1] of integer;
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| 230 | begin
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| 231 | Pile.Create(MapSize);
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| 232 | with MyUnit[uix] do
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| 233 | repeat
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| 234 | BestScore := -999999;
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| 235 | BestTask := utNone;
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| 236 | FillChar(AdjacentUnknown, SizeOf(AdjacentUnknown), $FF);
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| 237 | // -1, indicates tiles not checked yet
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| 238 | Pile.Empty;
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| 239 | Pile.Put(Loc, 0); // start search for something to do at current location
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| 240 | while Pile.Get(TestLoc, TestDistance) do
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| 241 | begin
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| 242 | TestScore := 0;
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| 243 | Tile := Map[TestLoc];
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| 244 | AdjacentUnknown[TestLoc] := 0;
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| 245 |
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| 246 | if ((Tile and fUnit) <> 0) and ((Tile and fOwned) = 0) then
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| 247 | begin // enemy unit
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| 248 | Unit_FindEnemyDefender(TestLoc, euix);
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| 249 | if RO.Treaty[RO.EnemyUn[euix].Owner] < trPeace then
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| 250 | begin // unfriendly unit -- check attack
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| 251 | if Unit_AttackForecast(uix, TestLoc, 100, AttackForecast) then
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| 252 | begin // attack possible, but advantageous?
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| 253 | if AttackForecast > 0 then
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| 254 | begin // enemy unit would be destroyed
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| 255 | MyDamage := Health - AttackForecast;
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| 256 | EnemyDamage := RO.EnemyUn[euix].Health + DestroyBonus;
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| 257 | end
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| 258 | else // own unit would be destroyed
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| 259 | begin
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| 260 | MyDamage := Health + DestroyBonus;
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| 261 | EnemyDamage := RO.EnemyUn[euix].Health + AttackForecast;
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| 262 | end;
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| 263 | TestScore := Aggressive * 2 *
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| 264 | (EnemyDamage * RO.EnemyModel[RO.EnemyUn[euix].emix].Cost) div
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| 265 | (MyDamage * MyModel[mix].Cost);
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| 266 | if TestScore <= 100 then
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| 267 | TestScore := 0 // own losses exceed enemy losses, no good
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| 268 | else
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| 269 | begin
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| 270 | TestScore := (TestScore - 100) div 10 + 30;
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| 271 | TestTask := utAttack;
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| 272 | end;
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| 273 | end;
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| 274 | end;
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| 275 | end // enemy unit
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| 276 |
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| 277 | else if ((Tile and fCity) <> 0) and ((Tile and fOwned) = 0) then
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| 278 | begin // enemy city, empty or unobserved
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| 279 | if (MyModel[mix].Domain = dGround)
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| 280 | // ships of this AI have no long-range guns, so don't try to attack cities with them
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| 281 | and ((RO.Territory[TestLoc] <
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| 282 | 0) // happens only for unobserved cities of extinct tribes, new owner unknown
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| 283 | or (RO.Treaty[RO.Territory[TestLoc]] < trPeace)) then
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| 284 | begin // unfriendly city -- check attack/capture
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| 285 | if (Tile and fObserved) <> 0 then
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| 286 | begin // observed and no unit present -- city is undefended, capture!
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| 287 | TestScore := 40;
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| 288 | TestTask := utCapture;
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| 289 | end
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| 290 | else if Role = Roam then
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| 291 | begin // unobserved city, possibly defended -- go for attack
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| 292 | TestScore := 30;
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| 293 | TestTask := utPatrol;
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| 294 | end;
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| 295 | end;
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| 296 | end // enemy city, empty or unobserved
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| 297 |
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| 298 | else
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| 299 | begin // no enemy city or unit here
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| 300 | // add surrounding tiles to queue, but only if there's a chance to beat BestScore
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| 301 | if 50 - DistanceScore * (TestDistance + 1) >= BestScore then
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| 302 | // assume a score of 50 is the best achievable
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| 303 | begin
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| 304 | V8_to_Loc(TestLoc, Adjacent);
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| 305 | for V8 := 0 to 7 do
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| 306 | begin
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| 307 | NextLoc := Adjacent[V8];
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| 308 | if (NextLoc >= 0) and (NextLoc < MapSize) and
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| 309 | (AdjacentUnknown[NextLoc] < 0) then // tile not checked yet
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| 310 | begin
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| 311 | TerrType := Map[NextLoc] and fTerrain;
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| 312 | if TerrType = fUNKNOWN then
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| 313 | Inc(AdjacentUnknown[TestLoc])
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| 314 | else
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| 315 | begin
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| 316 | case MyModel[mix].Domain of
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| 317 | dGround:
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| 318 | begin
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| 319 | TerrOwner := RO.Territory[NextLoc];
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| 320 | if (TerrType >= fGrass) and
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| 321 | (TerrType <> fArctic) // terrain can be walked
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| 322 | and ((TerrOwner < 0) or (TerrOwner = me) or
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| 323 | (RO.Treaty[TerrOwner] < trPeace)) // no peace treaty violated
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| 324 | and (((Map[NextLoc] and (fUnit or fCity)) <>
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| 325 | 0) or (Map[TestLoc] and Map[NextLoc] and fInEnemyZoC = 0)) then
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| 326 | // no ZoC violated
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| 327 | begin // yes, consider walking this tile
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| 328 | if TerrType = fMountains then
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| 329 | StepSize := 2 // mountains cause delay
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| 330 | else
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| 331 | StepSize := 1;
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| 332 | end
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| 333 | else
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| 334 | StepSize := 0; // no, don't walk here
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| 335 | end;
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| 336 | dSea:
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| 337 | if TerrType = fShore then // ships of this AI can only move along shore
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| 338 | StepSize := 1
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| 339 | else
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| 340 | StepSize := 0;
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| 341 | dAir:
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| 342 | StepSize := 1;
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| 343 | end;
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| 344 | if StepSize > 0 then
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| 345 | Pile.Put(NextLoc, TestDistance + StepSize);
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| 346 | end;
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| 347 | end;
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| 348 | end;
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| 349 | end;
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| 350 | if Role = Defend then TestScore := 0 // don't discover/patrol
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| 351 | else if AdjacentUnknown[TestLoc] > 0 then
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| 352 | begin
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| 353 | TestScore := 20 + AdjacentUnknown[TestLoc];
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| 354 | TestTask := utDiscover;
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| 355 | end
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| 356 | else
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| 357 | begin
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| 358 | TestScore := (RO.Turn - RO.MapObservedLast[TestLoc]) div 10;
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| 359 | TestTask := utPatrol;
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| 360 | end;
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| 361 | end; // no enemy city or unit here
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| 362 |
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| 363 | if TestScore > 0 then
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| 364 | begin
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| 365 | TestScore := TestScore - DistanceScore * TestDistance;
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| 366 | if TestScore > BestScore then
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| 367 | BestCount := 0;
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| 368 | if TestScore >= BestScore then
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| 369 | begin
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| 370 | Inc(BestCount);
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| 371 | if random(BestCount) = 0 then
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| 372 | begin
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| 373 | BestScore := TestScore;
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| 374 | BestLoc := TestLoc;
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| 375 | BestTask := TestTask;
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| 376 | end;
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| 377 | end;
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| 378 | end;
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| 379 | end;
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| 380 |
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| 381 | if (BestTask = utNone) and ((Map[Loc] and fCity) = 0) then
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| 382 | begin // nothing to do, move home
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| 383 | if Home >= 0 then
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| 384 | BestLoc := MyCity[Home].Loc
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| 385 | else
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| 386 | BestLoc := maNextCity;
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| 387 | BestTask := utGoHome;
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| 388 | end;
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| 389 | if BestTask <> utNone then
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| 390 | begin // attack/capture/discover/patrol task found, execute it
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| 391 | OldLoc := Loc;
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| 392 | MoveResult := Unit_Move(uix, BestLoc);
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| 393 | Exhausted := (Loc = OldLoc) or
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| 394 | ((MoveResult and (rMoreTurns or rUnitRemoved)) <> 0);
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| 395 | if (BestTask = utAttack) and ((MoveResult and rLocationReached) <> 0) then
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| 396 | if Movement < 100 then
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| 397 | Exhausted := True
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| 398 | else
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| 399 | begin
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| 400 | AttackResult := Unit_Attack(uix, BestLoc);
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| 401 | Exhausted := ((AttackResult and rExecuted) = 0) or
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| 402 | ((AttackResult and rUnitRemoved) <> 0);
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| 403 | end;
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| 404 | if not Exhausted then
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| 405 | Exhausted := (Movement < 100) and
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| 406 | ((Map[Loc] and (fRoad or fRR or fRiver or fCity)) = 0);
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| 407 | // no road, too few movement points for further movement
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| 408 | end
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| 409 | else
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| 410 | Exhausted := True;
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| 411 | until Exhausted;
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| 412 | Pile.Free;
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| 413 | end; // ProcessUnit
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| 414 |
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| 415 |
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| 416 | // SetCityProduction: choose production of each city
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| 417 | procedure TAI.SetCityProduction;
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| 418 | var
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| 419 | cix, mix, mixSettler, mixShip, mixArmy, V8, NewImprovement, Count, wix, AdjacentLoc: integer;
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| 420 | IsPort: boolean;
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| 421 | Adjacent: TVicinity8Loc;
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| 422 | Report: TCityReport;
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| 423 |
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| 424 | procedure TryBuild(Improvement: integer);
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| 425 | begin
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| 426 | if (NewImprovement < 0) // already improvement of higher priority found
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| 427 | and (MyCity[cix].Built[Improvement] = 0) // not built yet
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| 428 | and City_Improvable(cix, Improvement) then
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| 429 | NewImprovement := Improvement;
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| 430 | end;
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| 431 |
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| 432 | begin
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| 433 | // only produce newest models
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| 434 | mixSettler := -1;
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| 435 | mixArmy := -1;
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| 436 | mixShip := -1;
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| 437 | for mix := 0 to RO.nModel - 1 do
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| 438 | with MyModel[mix] do
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| 439 | if Kind = mkSettler then
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| 440 | mixSettler := mix
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| 441 | else if (Domain = dGround) and (Kind < mkSpecial_TownGuard) then
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| 442 | mixArmy := mix
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| 443 | else if Domain = dSea then
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| 444 | mixShip := mix;
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| 445 |
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| 446 | for cix := 0 to RO.nCity - 1 do
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| 447 | with MyCity[cix] do
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| 448 | if (RO.Turn = 0) or ((Flags and chProduction) <> 0) // city production complete
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| 449 | or not City_HasProject(cix) then
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| 450 | begin // check production
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| 451 | IsPort := False;
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| 452 | V8_to_Loc(Loc, Adjacent);
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| 453 | for v8 := 0 to 7 do
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| 454 | begin
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| 455 | AdjacentLoc := Adjacent[V8];
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| 456 | if (AdjacentLoc >= 0) and (AdjacentLoc < MapSize) and
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| 457 | ((Map[AdjacentLoc] and fTerrain) = fShore) then
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| 458 | IsPort := True; // shore tile at adjacent location -- city is port!
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| 459 | end;
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| 460 | City_GetReport(cix, Report);
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| 461 |
|
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| 462 | if (Report.Support = 0) or (SupportFree[RO.Government] < 2) and
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| 463 | (Report.Support < Report.ProdRep div 2) then
|
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| 464 | begin // enough material to support more units
|
|---|
| 465 | if (RO.Turn > 4) and ((Report.Eaten - Size * 2) div
|
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| 466 | SettlerFood[RO.Government] < Size div 4) then
|
|---|
| 467 | // less than 1 settler per 4 citizens -- produce more!
|
|---|
| 468 | City_StartUnitProduction(cix, mixSettler)
|
|---|
| 469 | else if IsPort and (mixShip >= 0) and (random(2) = 0) then
|
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| 470 | City_StartUnitProduction(cix, mixShip)
|
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| 471 | else
|
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| 472 | City_StartUnitProduction(cix, mixArmy);
|
|---|
| 473 | end
|
|---|
| 474 | else
|
|---|
| 475 | begin // check for building a city improvement
|
|---|
| 476 | NewImprovement := -1;
|
|---|
| 477 | if Built[imPalace] + Built[imCourt] + Built[imTownHall] = 0 then
|
|---|
| 478 | begin
|
|---|
| 479 | TryBuild(imCourt);
|
|---|
| 480 | TryBuild(imTownHall);
|
|---|
| 481 | end;
|
|---|
| 482 | if Report.Trade - Report.Corruption >= 11 then
|
|---|
| 483 | TryBuild(imLibrary);
|
|---|
| 484 | if Report.Trade - Report.Corruption >= 11 then
|
|---|
| 485 | TryBuild(imMarket);
|
|---|
| 486 | if Size >= 9 then
|
|---|
| 487 | TryBuild(imHighways);
|
|---|
| 488 | if (RO.Government <> gDespotism) and (Size >= 4) then
|
|---|
| 489 | TryBuild(imTemple);
|
|---|
| 490 | if (RO.Government <> gDespotism) and (Size >= 6) then
|
|---|
| 491 | TryBuild(imTheater);
|
|---|
| 492 | if (RO.Government <> gDespotism) and (Size >= 8) then
|
|---|
| 493 | TryBuild(imAqueduct);
|
|---|
| 494 | if (Report.ProdRep >= 4) or (RO.nCity = 1) then
|
|---|
| 495 | TryBuild(imBarracks);
|
|---|
| 496 | TryBuild(imWalls);
|
|---|
| 497 | if IsPort then
|
|---|
| 498 | TryBuild(imCoastalFort);
|
|---|
| 499 | if NewImprovement < 0 then
|
|---|
| 500 | begin // nothing to produce -- check for building a wonder
|
|---|
| 501 | Count := 0;
|
|---|
| 502 | for wix := 0 to nImp - 1 do
|
|---|
| 503 | if (Imp[wix].Kind = ikWonder) and (RO.Wonder[wix].CityID = -1) // not built yet
|
|---|
| 504 | and ((Report.ProdRep - Report.Support) * 40 >= Imp[wix].Cost)
|
|---|
| 505 | // takes less than 40 turns to produce
|
|---|
| 506 | and City_Improvable(cix, wix) then
|
|---|
| 507 | begin
|
|---|
| 508 | Inc(Count);
|
|---|
| 509 | if random(Count) = 0 then
|
|---|
| 510 | NewImprovement := wix; // yes, build this wonder!
|
|---|
| 511 | end;
|
|---|
| 512 | end;
|
|---|
| 513 | if NewImprovement >= 0 then
|
|---|
| 514 | City_StartImprovement(cix, NewImprovement)
|
|---|
| 515 | else if City_HasProject(cix) then
|
|---|
| 516 | City_StopProduction(cix); // nothing to produce
|
|---|
| 517 | end;
|
|---|
| 518 | end; // check production
|
|---|
| 519 | end; // SetCityProduction
|
|---|
| 520 |
|
|---|
| 521 |
|
|---|
| 522 | function TAI.ChooseResearchAdvance: integer;
|
|---|
| 523 | var
|
|---|
| 524 | mix: integer;
|
|---|
| 525 | begin
|
|---|
| 526 | if not IsResearched(adWheel) then
|
|---|
| 527 | begin
|
|---|
| 528 | Result := adWheel;
|
|---|
| 529 | exit;
|
|---|
| 530 | end // research the wheel first
|
|---|
| 531 | else if not IsResearched(adWarriorCode) then
|
|---|
| 532 | begin
|
|---|
| 533 | Result := adWarriorCode;
|
|---|
| 534 | exit;
|
|---|
| 535 | end // research warrior code first
|
|---|
| 536 | else if not IsResearched(adHorsebackRiding) then
|
|---|
| 537 | begin
|
|---|
| 538 | Result := adHorsebackRiding;
|
|---|
| 539 | exit;
|
|---|
| 540 | end; // research horseback riding first
|
|---|
| 541 |
|
|---|
| 542 | Result := -1; // random advance
|
|---|
| 543 | if random(10) = 0 then
|
|---|
| 544 | begin // check military research
|
|---|
| 545 | Result := adMilitary;
|
|---|
| 546 | if IsResearched(adMapMaking) and (random(2) = 0) then
|
|---|
| 547 | begin // try to develop new ship
|
|---|
| 548 | PrepareNewModel(dSea);
|
|---|
| 549 | SetNewModelFeature(mcDefense, 3);
|
|---|
| 550 | SetNewModelFeature(mcOffense, RO.DevModel.MaxWeight - 3);
|
|---|
| 551 | end
|
|---|
| 552 | else
|
|---|
| 553 | begin // try to develop new ground unit
|
|---|
| 554 | PrepareNewModel(dGround);
|
|---|
| 555 | SetNewModelFeature(mcDefense, 1);
|
|---|
| 556 | SetNewModelFeature(mcOffense, RO.DevModel.MaxWeight - 4);
|
|---|
| 557 | SetNewModelFeature(mcMob, 2);
|
|---|
| 558 | end;
|
|---|
| 559 |
|
|---|
| 560 | // don't develop model twice
|
|---|
| 561 | for mix := 0 to RO.nModel - 1 do
|
|---|
| 562 | if (RO.DevModel.Domain = MyModel[mix].Domain) and
|
|---|
| 563 | (RO.DevModel.Attack = MyModel[mix].Attack) and
|
|---|
| 564 | (RO.DevModel.Defense = MyModel[mix].Defense) then
|
|---|
| 565 | Result := -1; // already have this model
|
|---|
| 566 | end;
|
|---|
| 567 | end; // ChooseResearchAdvance
|
|---|
| 568 |
|
|---|
| 569 |
|
|---|
| 570 | function TAI.ChooseGovernment: integer;
|
|---|
| 571 | begin
|
|---|
| 572 | if IsResearched(adTheRepublic) then
|
|---|
| 573 | Result := gRepublic
|
|---|
| 574 | else if IsResearched(adMonarchy) then
|
|---|
| 575 | Result := gMonarchy
|
|---|
| 576 | else
|
|---|
| 577 | Result := gDespotism;
|
|---|
| 578 | end;
|
|---|
| 579 |
|
|---|
| 580 |
|
|---|
| 581 | //-------------------------------
|
|---|
| 582 | // DIPLOMACY
|
|---|
| 583 | //-------------------------------
|
|---|
| 584 |
|
|---|
| 585 | function TAI.WantNegotiation(Nation: integer; NegoTime: TNegoTime): boolean;
|
|---|
| 586 | begin
|
|---|
| 587 | Result := (NegoTime = EnemyCalled) // always accept contact
|
|---|
| 588 | or (NegoTime = EndOfTurn) and (RO.Turn mod 20 = Nation + me);
|
|---|
| 589 | // ask for contact only once in 20 turns
|
|---|
| 590 | end;
|
|---|
| 591 |
|
|---|
| 592 | procedure TAI.DoNegotiation;
|
|---|
| 593 | begin
|
|---|
| 594 | if (RO.Treaty[Opponent] < trPeace) and Odd(me + Opponent) then
|
|---|
| 595 | // make peace with some random nations
|
|---|
| 596 | if (OppoAction = scDipOffer) and (OppoOffer.nCost = 0) and
|
|---|
| 597 | (OppoOffer.nDeliver = 1) and (OppoOffer.Price[0] = opTreaty + trPeace) then
|
|---|
| 598 | MyAction := scDipAccept // accept peace
|
|---|
| 599 | else if OppoAction = scDipStart then
|
|---|
| 600 | begin
|
|---|
| 601 | MyOffer.nCost := 0;
|
|---|
| 602 | MyOffer.nDeliver := 1;
|
|---|
| 603 | MyOffer.Price[0] := opTreaty + trPeace; // offer peace in exchange of nothing
|
|---|
| 604 | MyAction := scDipOffer;
|
|---|
| 605 | end;
|
|---|
| 606 | end;
|
|---|
| 607 |
|
|---|
| 608 | end.
|
|---|
