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Dependencies:   mbed MotionSensor

Entity/Snake/Snake.cpp@31:ab24d028ddfd, 2019-05-05 (annotated)

Committer:
el17sm
Date:
Sun May 05 18:37:23 2019 +0000
Revision:
31:ab24d028ddfd
Parent:
29:6b8411bb040a 
Rearranged main.cpp to be converted into a game_engine class

Who changed what in which revision?

UserRevisionLine numberNew contents of line
el17sm 16:ddb203a74dfc 1 #include "Snake.h"
el17sm 16:ddb203a74dfc 2 #include "math.h"
el17sm 16:ddb203a74dfc 3 #include <complex>
el17sm 16:ddb203a74dfc 4
el17sm 17:99e533f7f2fb 5 // Constructor
el17sm 22:7abf4581bc9b 6 Snake::Snake(float pos_x, float pos_y)
el17sm 22:7abf4581bc9b 7 {
el17sm 28:98848e6a77a2 8 _damage_self_upon_collision = false;
el17sm 28:98848e6a77a2 9 _hp_drop_chance = 10; // out of 100
el17sm 16:ddb203a74dfc 10 moving = true;
el17sm 17:99e533f7f2fb 11 _prev_face = 0;
el17sm 16:ddb203a74dfc 12 face = 0;
el17sm 16:ddb203a74dfc 13 hp = 4;
el17sm 23:5a8f75e93508 14 attack = 1;
el17sm 29:6b8411bb040a 15 hitbox.width = 4;
el17sm 29:6b8411bb040a 16 hitbox.height = 7;
el17sm 16:ddb203a74dfc 17 position.x = pos_x;
el17sm 16:ddb203a74dfc 18 position.y = pos_y;
el17sm 16:ddb203a74dfc 19 sprite_size.width = 6;
el17sm 29:6b8411bb040a 20 sprite_size.height = 12;
el17sm 29:6b8411bb040a 21 sprite_size.offset_x = 1;
el17sm 29:6b8411bb040a 22 sprite_size.offset_y = 6;
el17sm 16:ddb203a74dfc 23 frame.count = 0;
el17sm 16:ddb203a74dfc 24 frame.number = 0;
el17sm 16:ddb203a74dfc 25 frame.max = 6;
el17sm 17:99e533f7f2fb 26 velocity = 0;
el17sm 17:99e533f7f2fb 27 _velocity_index = 0;
el17sm 17:99e533f7f2fb 28 }
el17sm 17:99e533f7f2fb 29 // Member Function
el17sm 22:7abf4581bc9b 30 void Snake::update_prev_face()
el17sm 22:7abf4581bc9b 31 {
el17sm 22:7abf4581bc9b 32 _prev_face = face;
el17sm 22:7abf4581bc9b 33 }
el17sm 17:99e533f7f2fb 34
el17sm 17:99e533f7f2fb 35 // Member Mutator
el17sm 23:5a8f75e93508 36 void Snake::update_hitbox(int hitbox_width, int hitbox_height, int sprite_size_width, int sprite_size_height, int sprite_size_offset_x, int sprite_size_offset_y, int max_frame) // Offset, Hitbox and Frame Count update
el17sm 22:7abf4581bc9b 37 {
el17sm 22:7abf4581bc9b 38 if (_prev_face != face) {
el17sm 18:3c030560e31d 39 frame.number = 0;
el17sm 17:99e533f7f2fb 40 hitbox.width = sprite_size.offset_y;
el17sm 17:99e533f7f2fb 41 hitbox.height = hitbox_height;
el17sm 17:99e533f7f2fb 42 sprite_size.width = sprite_size_width;
el17sm 17:99e533f7f2fb 43 sprite_size.height = sprite_size_height;
el17sm 17:99e533f7f2fb 44 sprite_size.offset_x = sprite_size_offset_x;
el17sm 17:99e533f7f2fb 45 sprite_size.offset_y = sprite_size_offset_y;
el17sm 18:3c030560e31d 46 frame.max = max_frame;
el17sm 17:99e533f7f2fb 47 }
el17sm 16:ddb203a74dfc 48 }
el17sm 16:ddb203a74dfc 49
el17sm 17:99e533f7f2fb 50 // Functions
el17sm 29:6b8411bb040a 51 void Snake::move(float player_x, float player_y, int * map, bool * doorways)
el17sm 22:7abf4581bc9b 52 {
el17sm 16:ddb203a74dfc 53 std::complex<double> pos_diff(player_x - position.x, player_y - position.y); // defining difference in position as a vector
el17sm 17:99e533f7f2fb 54 velocity = velocity_pattern[_velocity_index]; // Creating slithering effect, changing velocity of movement
el17sm 17:99e533f7f2fb 55 update_prev_face();
el17sm 22:7abf4581bc9b 56
el17sm 16:ddb203a74dfc 57 // Setting Face
el17sm 17:99e533f7f2fb 58 if (_velocity_index == 0) {
el17sm 16:ddb203a74dfc 59 if (abs(pos_diff.real()) > abs(pos_diff.imag())) {
el17sm 16:ddb203a74dfc 60 if (pos_diff.real() > 0) {
el17sm 16:ddb203a74dfc 61 face = 1;
el17sm 22:7abf4581bc9b 62 } else {
el17sm 16:ddb203a74dfc 63 face = 3;
el17sm 16:ddb203a74dfc 64 }
el17sm 22:7abf4581bc9b 65 } else {
el17sm 16:ddb203a74dfc 66 if (pos_diff.imag() > 0) {
el17sm 16:ddb203a74dfc 67 face = 0;
el17sm 22:7abf4581bc9b 68 } else {
el17sm 16:ddb203a74dfc 69 face = 2;
el17sm 16:ddb203a74dfc 70 }
el17sm 16:ddb203a74dfc 71 }
el17sm 16:ddb203a74dfc 72 }
el17sm 22:7abf4581bc9b 73
el17sm 17:99e533f7f2fb 74 // Movement
el17sm 22:7abf4581bc9b 75 if (face == 0) {
el17sm 16:ddb203a74dfc 76 position.y += velocity;
el17sm 23:5a8f75e93508 77 update_hitbox(4, 7, 6, 12, 1, 6, 6);
el17sm 22:7abf4581bc9b 78 } else if (face == 1) {
el17sm 16:ddb203a74dfc 79 position.x += velocity;
el17sm 23:5a8f75e93508 80 update_hitbox(7, 4, 12, 7, 6, 4, 4);
el17sm 22:7abf4581bc9b 81 } else if (face == 2) {
el17sm 16:ddb203a74dfc 82 position.y -= velocity;
el17sm 23:5a8f75e93508 83 update_hitbox(4, 7, 6, 12, 1, 5, 6);
el17sm 22:7abf4581bc9b 84 } else if (face == 3) {
el17sm 16:ddb203a74dfc 85 position.x -= velocity;
el17sm 23:5a8f75e93508 86 update_hitbox(7, 4, 12, 7, 0, 4, 4);
el17sm 16:ddb203a74dfc 87 }
el17sm 22:7abf4581bc9b 88
el17sm 29:6b8411bb040a 89 undo_move_x(entity_to_map_collision_test(position.x, prev_pos.y, map, doorways));
el17sm 29:6b8411bb040a 90 undo_move_y(entity_to_map_collision_test(prev_pos.x, position.y, map, doorways));
el17sm 22:7abf4581bc9b 91
el17sm 22:7abf4581bc9b 92 frame.count++;
el17sm 23:5a8f75e93508 93 if (frame.count >= 10) {
el17sm 16:ddb203a74dfc 94 frame.count = 0;
el17sm 22:7abf4581bc9b 95 _velocity_index++;
el17sm 22:7abf4581bc9b 96 frame.number++;
el17sm 22:7abf4581bc9b 97 if (_velocity_index >= 6) {
el17sm 17:99e533f7f2fb 98 _velocity_index = 0;
el17sm 17:99e533f7f2fb 99 }
el17sm 22:7abf4581bc9b 100 if (frame.number >= frame.max) {
el17sm 17:99e533f7f2fb 101 frame.number = 0;
el17sm 17:99e533f7f2fb 102 }
el17sm 16:ddb203a74dfc 103 }
el17sm 16:ddb203a74dfc 104 }
el17sm 16:ddb203a74dfc 105
el17sm 23:5a8f75e93508 106 void Snake::take_damage(int damage)
el17sm 23:5a8f75e93508 107 {
el17sm 23:5a8f75e93508 108 hp -= damage;
el17sm 23:5a8f75e93508 109 }
el17sm 23:5a8f75e93508 110
el17sm 22:7abf4581bc9b 111 int * Snake::get_frame()
el17sm 22:7abf4581bc9b 112 {
el17sm 17:99e533f7f2fb 113 if(face == 0) {
el17sm 17:99e533f7f2fb 114 return (int *) sprite_snake_y[1][frame.number];
el17sm 22:7abf4581bc9b 115 } else if(face == 1) {
el17sm 17:99e533f7f2fb 116 return (int *) sprite_snake_x[0][frame.number];
el17sm 22:7abf4581bc9b 117 } else if(face == 2) {
el17sm 17:99e533f7f2fb 118 return (int *) sprite_snake_y[0][frame.number];
el17sm 22:7abf4581bc9b 119 } else if(face == 3) {
el17sm 17:99e533f7f2fb 120 return (int *) sprite_snake_x[1][frame.number];
el17sm 17:99e533f7f2fb 121 }
el17sm 17:99e533f7f2fb 122 return 0;
el17sm 16:ddb203a74dfc 123 }