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Basic two player pong working
This commit is contained in:
Jason Turner
parent
68d93b0a1e
commit
70aa76dce9
68
pong2.cpp
68
pong2.cpp
@ -209,7 +209,7 @@ int main()
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0,0,2,2,1,1,1,1,2,2,0,0,
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0,0,2,2,2,1,1,2,2,2,0,0,
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0,0,0,2,2,2,2,2,2,0,0,0,
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0,0,0,2,2,2,2,2,2,0,0,0,
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0,0,0,0,2,2,2,2,0,0,0,0,
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0,0,0,0,0,0,0,0,0,0,0,0,
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0,0,0,0,0,0,0,0,0,0,0,0,
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0,0,0,0,0,0,0,0,0,0,0,0,
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@ -220,9 +220,9 @@ int main()
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make_sprite(1,
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0,0,0,0,1,1,1,1,0,0,0,0,
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0,0,0,0,1,0,0,1,0,0,0,0,
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0,0,0,0,1,0,0,1,0,0,0,0,
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0,0,0,0,1,0,0,1,0,0,0,0,
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0,0,0,0,1,1,1,1,0,0,0,0,
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0,0,0,0,1,1,1,1,0,0,0,0,
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0,0,0,0,1,1,1,1,0,0,0,0,
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0,0,0,0,2,2,2,2,0,0,0,0,
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0,0,0,0,2,2,2,2,0,0,0,0,
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0,0,0,0,2,1,1,2,0,0,0,0,
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@ -236,24 +236,15 @@ int main()
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0,0,0,0,2,1,1,2,0,0,0,0,
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0,0,0,0,2,2,2,2,0,0,0,0,
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0,0,0,0,2,2,2,2,0,0,0,0,
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0,0,0,0,1,0,0,1,0,0,0,0,
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0,0,0,0,1,0,0,1,0,0,0,0,
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0,0,0,0,1,0,0,1,0,0,0,0,
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0,0,0,0,1,1,1,1,0,0,0,0,
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0,0,0,0,1,1,1,1,0,0,0,0,
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0,0,0,0,1,1,1,1,0,0,0,0,
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0,0,0,0,1,1,1,1,0,0,0,0
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);
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enable_sprite(1, 1, true, false, true);
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enable_sprite(2, 1, true, false, true);
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// sprite doubling with set_bit seems to be not working?
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// this is a hack TODO fix
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// memory(SPRITE_EXPAND_VERTICAL) = 0xFF;
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// start timer
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memory(56590) = 1;
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const auto joy = [](const uint8_t d){
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struct State{
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State(const uint8_t portdata)
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@ -313,8 +304,8 @@ int main()
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std::pair<int8_t, int8_t> ball_vec{1,1};
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uint8_t player1 = 0;
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uint8_t player2 = 0;
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uint8_t player1 = '0';
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uint8_t player2 = '0';
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const auto reset_ball = [&]{
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sprite_x(0) = 255/2;
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@ -329,39 +320,46 @@ int main()
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sprite_x(2) = 255;
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sprite_y(2) = 150;
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uint8_t num_volleys = 0;
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while (true) {
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if (memory(56325) == 0) {
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// Move ball
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const auto ball_x = sprite_x(0) += std::get<0>(ball_vec);
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const auto ball_y = sprite_y(0) += std::get<1>(ball_vec);
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if (memory(53266) == 245
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&& !test_bit(memory(53265),7)) {
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if (const auto collisions = sprite_collisions();
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collisions.sprite0 && (collisions.sprite1 || collisions.sprite2)) {
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// ball hit a paddle
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std::get<0>(ball_vec) *= -1;
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collisions.sprite0 && (collisions.sprite1 || collisions.sprite2))
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{
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std::get<0>(ball_vec) *= -1; //invert ball x velocity
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// "bounce" vall out of collision area
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sprite_x(0) += std::get<0>(ball_vec);
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++num_volleys;
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}
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// if (num_volleys == 10) {
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// std::get<0>(ball_vec) += 1;
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// }
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const auto ball_x = sprite_x(0) += std::get<0>(ball_vec);
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const auto ball_y = sprite_y(0) += std::get<1>(ball_vec);
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// Update paddle positions
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if (const auto joy = joy_port1(); joy.up)
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{
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++sprite_y(1);
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sprite_y(1) += 3;
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} else if (joy.down) {
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--sprite_y(1);
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sprite_y(1) -= 3;
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}
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if (const auto joy = joy_port2(); joy.up)
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{
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++sprite_y(2);
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sprite_y(2) += 3;
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} else if (joy.down) {
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--sprite_y(2);
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sprite_y(2) -= 3;
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}
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// ball hit the top or bottom wall
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if (ball_y == 30 || ball_y == 240) {
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if (ball_y == 45 || ball_y == 235) {
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std::get<1>(ball_vec) *= -1;
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}
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@ -369,14 +367,14 @@ int main()
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// ball hit left wall, player 2 scored
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++player2;
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reset_ball();
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} else if (ball_x == 254) {
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} else if (ball_x == 255) {
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// ball hit right wall, player 1 scored
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++player1;
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reset_ball();
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}
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display_int(10, 3, player1);
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display_int(30, 3, player2);
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display_int(10, 12, player1);
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display_int(30, 12, player2);
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}
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}
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}
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23
src/main.cpp
23
src/main.cpp
@ -82,11 +82,14 @@ Operand get_register(const int reg_num, const int offset = 0) {
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case 0x07: return Operand(Operand::Type::literal, "$fe"); // unused
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case 0x08: return Operand(Operand::Type::literal, "$22"); // unused
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case 0x09: return Operand(Operand::Type::literal, "$23"); // unused
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case 0x0A: return Operand(Operand::Type::literal, "$39"); // Current BASIC line number
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case 0x0B: return Operand(Operand::Type::literal, "$3a"); // Current BASIC line number
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case 0x10: return get_register(0x00 + offset);
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case 0x11: return get_register(0x02 + offset);
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case 0x12: return get_register(0x04 + offset);
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case 0x13: return get_register(0x06 + offset);
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case 0x14: return get_register(0x08 + offset);
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case 0x15: return get_register(0x0A + offset);
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};
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throw std::runtime_error("Unhandled register number: " + std::to_string(reg_num));
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}
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@ -415,6 +418,8 @@ struct i386 : ASMLine
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return Operand(Operand::Type::reg, 0x07);
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} else if (o == "%sil") {
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return Operand(Operand::Type::reg, 0x08);
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} else if (o == "%dil") {
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return Operand(Operand::Type::reg, 0x0A);
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} else if (o == "%ax" || o == "%eax") {
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return Operand(Operand::Type::reg, 0x10);
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} else if (o == "%bx" || o == "%ebx") {
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@ -425,6 +430,8 @@ struct i386 : ASMLine
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return Operand(Operand::Type::reg, 0x13);
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} else if (o == "%si" || o == "%esi") {
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return Operand(Operand::Type::reg, 0x14);
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} else if (o == "%di" || o == "%edi") {
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return Operand(Operand::Type::reg, 0x15);
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} else {
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throw std::runtime_error("Unknown register operand: '" + o + "'");
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}
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@ -579,6 +586,11 @@ void translate_instruction(std::vector<mos6502> &instructions, const i386::OpCod
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instructions.emplace_back(mos6502::OpCode::clc);
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instructions.emplace_back(mos6502::OpCode::adc, Operand(o1.type, fixup_8bit_literal(o1.value)));
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instructions.emplace_back(mos6502::OpCode::sta, get_register(o2.reg_num));
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} else if (o1.type == Operand::Type::literal && o2.type == Operand::Type::literal) {
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instructions.emplace_back(mos6502::OpCode::lda, Operand(o1.type, fixup_8bit_literal(o1.value)));
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instructions.emplace_back(mos6502::OpCode::clc);
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instructions.emplace_back(mos6502::OpCode::adc, o2);
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instructions.emplace_back(mos6502::OpCode::sta, o2);
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} else if (o1.type == Operand::Type::reg && o2.type == Operand::Type::literal) {
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instructions.emplace_back(mos6502::OpCode::lda, get_register(o1.reg_num));
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instructions.emplace_back(mos6502::OpCode::clc);
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@ -648,6 +660,17 @@ void translate_instruction(std::vector<mos6502> &instructions, const i386::OpCod
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throw std::runtime_error("Cannot translate subb instruction");
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}
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break;
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case i386::OpCode::pushl:
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if (o1.type == Operand::Type::reg) {
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instructions.emplace_back(mos6502::OpCode::lda, get_register(o1.reg_num));
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instructions.emplace_back(mos6502::OpCode::pha);
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instructions.emplace_back(mos6502::OpCode::lda, get_register(o1.reg_num, 1));
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instructions.emplace_back(mos6502::OpCode::pha);
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} else {
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throw std::runtime_error("Cannot translate sbb instruction");
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}
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break;
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case i386::OpCode::sbbb:
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// DEST <- (DEST – (SRC + CF))
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// o2 <- (o2 - (o1 + cf))
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